mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 17:16:12 +00:00
e3f57c4d94
Backed out changeset 1730bcae2c45 (bug 602787) Backed out changeset 70606b9b1e42 (bug 602787) Backed out changeset 57ca2861ea30 (bug 602787) Backed out changeset 3b9f1062d915 (bug 602787) Backed out changeset 3ee56eacc84b (bug 602787) Backed out changeset 1c35693be3d3 (bug 602787) Backed out changeset ef095c3aef98 (bug 602787) Backed out changeset 4827bdae97fd (bug 602787) Backed out changeset fa0f355e7871 (bug 602787)
9733 lines
312 KiB
C++
9733 lines
312 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=2 sw=2 et tw=78:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This Original Code has been modified by IBM Corporation.
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* Modifications made by IBM described herein are
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* Copyright (c) International Business Machines
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* Corporation, 2000
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*
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* Modifications to Mozilla code or documentation
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* identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 05/03/2000 IBM Corp. Observer events for reflow states
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*/
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/* a presentation of a document, part 2 */
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/Likely.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TouchEvents.h"
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#include "mozilla/Util.h"
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#include <algorithm>
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#ifdef XP_WIN
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#include "winuser.h"
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#endif
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#include "nsPresShell.h"
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#include "nsPresContext.h"
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#include "nsIContent.h"
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#include "mozilla/dom/Element.h"
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#include "nsIDocument.h"
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#include "nsCSSStyleSheet.h"
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#include "nsAnimationManager.h"
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#include "nsINameSpaceManager.h" // for Pref-related rule management (bugs 22963,20760,31816)
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#include "nsFrame.h"
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#include "FrameLayerBuilder.h"
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#include "nsViewManager.h"
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#include "nsView.h"
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#include "nsCRTGlue.h"
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#include "prlog.h"
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#include "prprf.h"
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#include "prinrval.h"
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#include "nsTArray.h"
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#include "nsCOMArray.h"
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#include "nsContainerFrame.h"
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#include "nsDOMEvent.h"
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#include "nsISelection.h"
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#include "mozilla/Selection.h"
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#include "nsGkAtoms.h"
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#include "nsIDOMRange.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMElement.h"
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#include "nsRange.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "nsReadableUtils.h"
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#include "nsIPageSequenceFrame.h"
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#include "nsCaret.h"
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#include "nsIDOMHTMLDocument.h"
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#include "nsFrameManager.h"
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#include "nsEventStateManager.h"
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#include "nsIMEStateManager.h"
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#include "nsXPCOM.h"
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#include "nsILayoutHistoryState.h"
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#include "nsILineIterator.h" // for ScrollContentIntoView
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#include "pldhash.h"
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#include "mozilla/dom/Touch.h"
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#include "nsIObserverService.h"
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#include "nsIDocShell.h" // for reflow observation
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#include "nsIBaseWindow.h"
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#include "nsError.h"
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#include "nsLayoutUtils.h"
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#include "nsViewportInfo.h"
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#include "nsCSSRendering.h"
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// for |#ifdef DEBUG| code
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#include "prenv.h"
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#include "nsDisplayList.h"
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#include "nsRegion.h"
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#include "nsRenderingContext.h"
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#include "nsAutoLayoutPhase.h"
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#ifdef MOZ_REFLOW_PERF
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#include "nsFontMetrics.h"
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#endif
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#include "PositionedEventTargeting.h"
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#include "nsIReflowCallback.h"
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#include "nsPIDOMWindow.h"
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#include "nsFocusManager.h"
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#include "nsIObjectFrame.h"
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#include "nsIObjectLoadingContent.h"
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#include "nsNetUtil.h"
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#include "nsEventDispatcher.h"
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#include "nsThreadUtils.h"
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#include "nsStyleSheetService.h"
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#include "gfxImageSurface.h"
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#include "gfxContext.h"
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#include "nsSMILAnimationController.h"
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#include "SVGContentUtils.h"
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#include "nsSVGEffects.h"
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#include "SVGFragmentIdentifier.h"
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#include "nsPerformance.h"
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#include "nsRefreshDriver.h"
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#include "nsDOMNavigationTiming.h"
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// Drag & Drop, Clipboard
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#include "nsIDocShellTreeItem.h"
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#include "nsIURI.h"
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#include "nsIScrollableFrame.h"
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#include "nsITimer.h"
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#include "mozilla/a11y/DocAccessible.h"
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#ifdef DEBUG
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#include "mozilla/a11y/Logging.h"
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#endif
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#endif
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// For style data reconstruction
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#include "nsStyleChangeList.h"
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#include "nsCSSFrameConstructor.h"
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#ifdef MOZ_XUL
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#include "nsMenuFrame.h"
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#include "nsTreeBodyFrame.h"
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#include "nsIBoxObject.h"
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#include "nsITreeBoxObject.h"
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#include "nsMenuPopupFrame.h"
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#include "nsITreeColumns.h"
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#include "nsIDOMXULMultSelectCntrlEl.h"
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#include "nsIDOMXULSelectCntrlItemEl.h"
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#include "nsIDOMXULMenuListElement.h"
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#endif
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#include "GeckoProfiler.h"
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#include "gfxPlatform.h"
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#include "Layers.h"
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#include "LayerTreeInvalidation.h"
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#include "mozilla/css/ImageLoader.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Telemetry.h"
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#include "nsCanvasFrame.h"
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#include "nsIImageLoadingContent.h"
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#include "nsIScreen.h"
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#include "nsIScreenManager.h"
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#include "nsPlaceholderFrame.h"
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#include "nsTransitionManager.h"
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#include "RestyleManager.h"
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#include "nsIDOMHTMLElement.h"
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#include "nsIDragSession.h"
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#include "nsIFrameInlines.h"
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#ifdef ANDROID
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#include "nsIDocShellTreeOwner.h"
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#endif
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#define ANCHOR_SCROLL_FLAGS \
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(nsIPresShell::SCROLL_OVERFLOW_HIDDEN | nsIPresShell::SCROLL_NO_PARENT_FRAMES)
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using namespace mozilla;
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using namespace mozilla::css;
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using namespace mozilla::dom;
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using namespace mozilla::layers;
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CapturingContentInfo nsIPresShell::gCaptureInfo =
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{ false /* mAllowed */, false /* mPointerLock */, false /* mRetargetToElement */,
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false /* mPreventDrag */, nullptr /* mContent */ };
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nsIContent* nsIPresShell::gKeyDownTarget;
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nsRefPtrHashtable<nsUint32HashKey, dom::Touch>* nsIPresShell::gCaptureTouchList;
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bool nsIPresShell::gPreventMouseEvents = false;
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// convert a color value to a string, in the CSS format #RRGGBB
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// * - initially created for bugs 31816, 20760, 22963
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static void ColorToString(nscolor aColor, nsAutoString &aString);
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// RangePaintInfo is used to paint ranges to offscreen buffers
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struct RangePaintInfo {
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nsRefPtr<nsRange> mRange;
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nsDisplayListBuilder mBuilder;
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nsDisplayList mList;
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// offset of builder's reference frame to the root frame
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nsPoint mRootOffset;
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RangePaintInfo(nsRange* aRange, nsIFrame* aFrame)
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: mRange(aRange), mBuilder(aFrame, nsDisplayListBuilder::PAINTING, false)
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{
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MOZ_COUNT_CTOR(RangePaintInfo);
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}
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~RangePaintInfo()
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{
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mList.DeleteAll();
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MOZ_COUNT_DTOR(RangePaintInfo);
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}
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};
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#undef NOISY
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// ----------------------------------------------------------------------
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#ifdef DEBUG
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// Set the environment variable GECKO_VERIFY_REFLOW_FLAGS to one or
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// more of the following flags (comma separated) for handy debug
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// output.
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static uint32_t gVerifyReflowFlags;
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struct VerifyReflowFlags {
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const char* name;
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uint32_t bit;
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};
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static const VerifyReflowFlags gFlags[] = {
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{ "verify", VERIFY_REFLOW_ON },
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{ "reflow", VERIFY_REFLOW_NOISY },
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{ "all", VERIFY_REFLOW_ALL },
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{ "list-commands", VERIFY_REFLOW_DUMP_COMMANDS },
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{ "noisy-commands", VERIFY_REFLOW_NOISY_RC },
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{ "really-noisy-commands", VERIFY_REFLOW_REALLY_NOISY_RC },
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{ "resize", VERIFY_REFLOW_DURING_RESIZE_REFLOW },
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};
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#define NUM_VERIFY_REFLOW_FLAGS (sizeof(gFlags) / sizeof(gFlags[0]))
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static void
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ShowVerifyReflowFlags()
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{
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printf("Here are the available GECKO_VERIFY_REFLOW_FLAGS:\n");
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const VerifyReflowFlags* flag = gFlags;
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const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
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while (flag < limit) {
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printf(" %s\n", flag->name);
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++flag;
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}
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printf("Note: GECKO_VERIFY_REFLOW_FLAGS is a comma separated list of flag\n");
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printf("names (no whitespace)\n");
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}
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#endif
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//========================================================================
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//========================================================================
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//========================================================================
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#ifdef MOZ_REFLOW_PERF
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class ReflowCountMgr;
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static const char kGrandTotalsStr[] = "Grand Totals";
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// Counting Class
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class ReflowCounter {
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public:
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ReflowCounter(ReflowCountMgr * aMgr = nullptr);
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~ReflowCounter();
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void ClearTotals();
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void DisplayTotals(const char * aStr);
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void DisplayDiffTotals(const char * aStr);
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void DisplayHTMLTotals(const char * aStr);
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void Add() { mTotal++; }
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void Add(uint32_t aTotal) { mTotal += aTotal; }
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void CalcDiffInTotals();
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void SetTotalsCache();
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void SetMgr(ReflowCountMgr * aMgr) { mMgr = aMgr; }
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uint32_t GetTotal() { return mTotal; }
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protected:
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void DisplayTotals(uint32_t aTotal, const char * aTitle);
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void DisplayHTMLTotals(uint32_t aTotal, const char * aTitle);
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uint32_t mTotal;
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uint32_t mCacheTotal;
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ReflowCountMgr * mMgr; // weak reference (don't delete)
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};
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// Counting Class
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class IndiReflowCounter {
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public:
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IndiReflowCounter(ReflowCountMgr * aMgr = nullptr)
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: mFrame(nullptr),
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mCount(0),
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mMgr(aMgr),
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mCounter(aMgr),
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mHasBeenOutput(false)
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{}
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virtual ~IndiReflowCounter() {}
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nsAutoString mName;
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nsIFrame * mFrame; // weak reference (don't delete)
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int32_t mCount;
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ReflowCountMgr * mMgr; // weak reference (don't delete)
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ReflowCounter mCounter;
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bool mHasBeenOutput;
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};
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//--------------------
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// Manager Class
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//--------------------
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class ReflowCountMgr {
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public:
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ReflowCountMgr();
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virtual ~ReflowCountMgr();
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void ClearTotals();
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void ClearGrandTotals();
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void DisplayTotals(const char * aStr);
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void DisplayHTMLTotals(const char * aStr);
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void DisplayDiffsInTotals(const char * aStr);
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void Add(const char * aName, nsIFrame * aFrame);
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ReflowCounter * LookUp(const char * aName);
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void PaintCount(const char *aName, nsRenderingContext* aRenderingContext,
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nsPresContext *aPresContext, nsIFrame *aFrame,
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const nsPoint &aOffset, uint32_t aColor);
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FILE * GetOutFile() { return mFD; }
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PLHashTable * GetIndiFrameHT() { return mIndiFrameCounts; }
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void SetPresContext(nsPresContext * aPresContext) { mPresContext = aPresContext; } // weak reference
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void SetPresShell(nsIPresShell* aPresShell) { mPresShell= aPresShell; } // weak reference
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void SetDumpFrameCounts(bool aVal) { mDumpFrameCounts = aVal; }
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void SetDumpFrameByFrameCounts(bool aVal) { mDumpFrameByFrameCounts = aVal; }
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void SetPaintFrameCounts(bool aVal) { mPaintFrameByFrameCounts = aVal; }
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bool IsPaintingFrameCounts() { return mPaintFrameByFrameCounts; }
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protected:
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void DisplayTotals(uint32_t aTotal, uint32_t * aDupArray, char * aTitle);
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void DisplayHTMLTotals(uint32_t aTotal, uint32_t * aDupArray, char * aTitle);
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static int RemoveItems(PLHashEntry *he, int i, void *arg);
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static int RemoveIndiItems(PLHashEntry *he, int i, void *arg);
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void CleanUp();
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// stdout Output Methods
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static int DoSingleTotal(PLHashEntry *he, int i, void *arg);
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static int DoSingleIndi(PLHashEntry *he, int i, void *arg);
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void DoGrandTotals();
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void DoIndiTotalsTree();
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// HTML Output Methods
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static int DoSingleHTMLTotal(PLHashEntry *he, int i, void *arg);
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void DoGrandHTMLTotals();
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// Zero Out the Totals
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static int DoClearTotals(PLHashEntry *he, int i, void *arg);
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// Displays the Diff Totals
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static int DoDisplayDiffTotals(PLHashEntry *he, int i, void *arg);
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PLHashTable * mCounts;
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PLHashTable * mIndiFrameCounts;
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FILE * mFD;
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bool mDumpFrameCounts;
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bool mDumpFrameByFrameCounts;
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bool mPaintFrameByFrameCounts;
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bool mCycledOnce;
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// Root Frame for Individual Tracking
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nsPresContext * mPresContext;
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nsIPresShell* mPresShell;
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// ReflowCountMgr gReflowCountMgr;
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};
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#endif
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//========================================================================
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// comment out to hide caret
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#define SHOW_CARET
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// The upper bound on the amount of time to spend reflowing, in
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// microseconds. When this bound is exceeded and reflow commands are
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// still queued up, a reflow event is posted. The idea is for reflow
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// to not hog the processor beyond the time specifed in
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// gMaxRCProcessingTime. This data member is initialized from the
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// layout.reflow.timeslice pref.
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#define NS_MAX_REFLOW_TIME 1000000
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static int32_t gMaxRCProcessingTime = -1;
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struct nsCallbackEventRequest
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{
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nsIReflowCallback* callback;
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nsCallbackEventRequest* next;
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};
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// ----------------------------------------------------------------------------
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#define ASSERT_REFLOW_SCHEDULED_STATE() \
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NS_ASSERTION(mReflowScheduled == \
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GetPresContext()->RefreshDriver()-> \
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IsLayoutFlushObserver(this), "Unexpected state")
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class nsAutoCauseReflowNotifier
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{
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public:
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nsAutoCauseReflowNotifier(PresShell* aShell)
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: mShell(aShell)
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{
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mShell->WillCauseReflow();
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}
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~nsAutoCauseReflowNotifier()
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{
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// This check should not be needed. Currently the only place that seem
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// to need it is the code that deals with bug 337586.
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if (!mShell->mHaveShutDown) {
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mShell->DidCauseReflow();
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}
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else {
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nsContentUtils::RemoveScriptBlocker();
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}
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}
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PresShell* mShell;
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};
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|
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class MOZ_STACK_CLASS nsPresShellEventCB : public nsDispatchingCallback
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{
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public:
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nsPresShellEventCB(PresShell* aPresShell) : mPresShell(aPresShell) {}
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virtual void HandleEvent(nsEventChainPostVisitor& aVisitor)
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{
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if (aVisitor.mPresContext && aVisitor.mEvent->eventStructType != NS_EVENT) {
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if (aVisitor.mEvent->message == NS_MOUSE_BUTTON_DOWN ||
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aVisitor.mEvent->message == NS_MOUSE_BUTTON_UP) {
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// Mouse-up and mouse-down events call nsFrame::HandlePress/Release
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// which call GetContentOffsetsFromPoint which requires up-to-date layout.
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// Bring layout up-to-date now so that GetCurrentEventFrame() below
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// will return a real frame and we don't have to worry about
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// destroying it by flushing later.
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mPresShell->FlushPendingNotifications(Flush_Layout);
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} else if (aVisitor.mEvent->message == NS_WHEEL_WHEEL &&
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aVisitor.mEventStatus != nsEventStatus_eConsumeNoDefault) {
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nsIFrame* frame = mPresShell->GetCurrentEventFrame();
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if (frame) {
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// chrome (including addons) should be able to know if content
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// handles both D3E "wheel" event and legacy mouse scroll events.
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// We should dispatch legacy mouse events before dispatching the
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// "wheel" event into system group.
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nsRefPtr<nsEventStateManager> esm =
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aVisitor.mPresContext->EventStateManager();
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esm->DispatchLegacyMouseScrollEvents(frame,
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aVisitor.mEvent->AsWheelEvent(),
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&aVisitor.mEventStatus);
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}
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}
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nsIFrame* frame = mPresShell->GetCurrentEventFrame();
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if (!frame &&
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(aVisitor.mEvent->message == NS_MOUSE_BUTTON_UP ||
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aVisitor.mEvent->message == NS_TOUCH_END)) {
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// Redirect BUTTON_UP and TOUCH_END events to the root frame to ensure
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// that capturing is released.
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frame = mPresShell->GetRootFrame();
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}
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if (frame) {
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frame->HandleEvent(aVisitor.mPresContext,
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aVisitor.mEvent->AsGUIEvent(),
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&aVisitor.mEventStatus);
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}
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}
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}
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nsRefPtr<PresShell> mPresShell;
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};
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|
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class nsBeforeFirstPaintDispatcher : public nsRunnable
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|
{
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|
public:
|
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nsBeforeFirstPaintDispatcher(nsIDocument* aDocument)
|
|
: mDocument(aDocument) {}
|
|
|
|
// Fires the "before-first-paint" event so that interested parties (right now, the
|
|
// mobile browser) are aware of it.
|
|
NS_IMETHOD Run()
|
|
{
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->NotifyObservers(mDocument, "before-first-paint",
|
|
nullptr);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
};
|
|
|
|
bool PresShell::sDisableNonTestMouseEvents = false;
|
|
|
|
#ifdef PR_LOGGING
|
|
PRLogModuleInfo* PresShell::gLog;
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
static void
|
|
VerifyStyleTree(nsPresContext* aPresContext, nsFrameManager* aFrameManager)
|
|
{
|
|
if (nsFrame::GetVerifyStyleTreeEnable()) {
|
|
nsIFrame* rootFrame = aFrameManager->GetRootFrame();
|
|
aPresContext->RestyleManager()->DebugVerifyStyleTree(rootFrame);
|
|
}
|
|
}
|
|
#define VERIFY_STYLE_TREE ::VerifyStyleTree(mPresContext, mFrameConstructor)
|
|
#else
|
|
#define VERIFY_STYLE_TREE
|
|
#endif
|
|
|
|
static bool gVerifyReflowEnabled;
|
|
|
|
bool
|
|
nsIPresShell::GetVerifyReflowEnable()
|
|
{
|
|
#ifdef DEBUG
|
|
static bool firstTime = true;
|
|
if (firstTime) {
|
|
firstTime = false;
|
|
char* flags = PR_GetEnv("GECKO_VERIFY_REFLOW_FLAGS");
|
|
if (flags) {
|
|
bool error = false;
|
|
|
|
for (;;) {
|
|
char* comma = PL_strchr(flags, ',');
|
|
if (comma)
|
|
*comma = '\0';
|
|
|
|
bool found = false;
|
|
const VerifyReflowFlags* flag = gFlags;
|
|
const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
|
|
while (flag < limit) {
|
|
if (PL_strcasecmp(flag->name, flags) == 0) {
|
|
gVerifyReflowFlags |= flag->bit;
|
|
found = true;
|
|
break;
|
|
}
|
|
++flag;
|
|
}
|
|
|
|
if (! found)
|
|
error = true;
|
|
|
|
if (! comma)
|
|
break;
|
|
|
|
*comma = ',';
|
|
flags = comma + 1;
|
|
}
|
|
|
|
if (error)
|
|
ShowVerifyReflowFlags();
|
|
}
|
|
|
|
if (VERIFY_REFLOW_ON & gVerifyReflowFlags) {
|
|
gVerifyReflowEnabled = true;
|
|
|
|
printf("Note: verifyreflow is enabled");
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf(" (noisy)");
|
|
}
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf(" (all)");
|
|
}
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf(" (show reflow commands)");
|
|
}
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
printf(" (noisy reflow commands)");
|
|
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
|
|
printf(" (REALLY noisy reflow commands)");
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
return gVerifyReflowEnabled;
|
|
}
|
|
|
|
void
|
|
PresShell::AddInvalidateHiddenPresShellObserver(nsRefreshDriver *aDriver)
|
|
{
|
|
if (!mHiddenInvalidationObserverRefreshDriver && !mIsDestroying && !mHaveShutDown) {
|
|
aDriver->AddPresShellToInvalidateIfHidden(this);
|
|
mHiddenInvalidationObserverRefreshDriver = aDriver;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::InvalidatePresShellIfHidden()
|
|
{
|
|
if (!IsVisible() && mPresContext) {
|
|
mPresContext->NotifyInvalidation(0);
|
|
}
|
|
mHiddenInvalidationObserverRefreshDriver = nullptr;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetVerifyReflowEnable(bool aEnabled)
|
|
{
|
|
gVerifyReflowEnabled = aEnabled;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsIPresShell::AddWeakFrameExternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
AddWeakFrameInternal(aWeakFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::AddWeakFrameInternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
if (aWeakFrame->GetFrame()) {
|
|
aWeakFrame->GetFrame()->AddStateBits(NS_FRAME_EXTERNAL_REFERENCE);
|
|
}
|
|
aWeakFrame->SetPreviousWeakFrame(mWeakFrames);
|
|
mWeakFrames = aWeakFrame;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsIPresShell::RemoveWeakFrameExternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
RemoveWeakFrameInternal(aWeakFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RemoveWeakFrameInternal(nsWeakFrame* aWeakFrame)
|
|
{
|
|
if (mWeakFrames == aWeakFrame) {
|
|
mWeakFrames = aWeakFrame->GetPreviousWeakFrame();
|
|
return;
|
|
}
|
|
nsWeakFrame* nextWeak = mWeakFrames;
|
|
while (nextWeak && nextWeak->GetPreviousWeakFrame() != aWeakFrame) {
|
|
nextWeak = nextWeak->GetPreviousWeakFrame();
|
|
}
|
|
if (nextWeak) {
|
|
nextWeak->SetPreviousWeakFrame(aWeakFrame->GetPreviousWeakFrame());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsFrameSelection>
|
|
nsIPresShell::FrameSelection()
|
|
{
|
|
nsRefPtr<nsFrameSelection> ret = mSelection;
|
|
return ret.forget();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
static bool sSynthMouseMove = true;
|
|
static uint32_t sNextPresShellId;
|
|
|
|
PresShell::PresShell()
|
|
: mMouseLocation(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE)
|
|
{
|
|
mSelection = nullptr;
|
|
#ifdef MOZ_REFLOW_PERF
|
|
mReflowCountMgr = new ReflowCountMgr();
|
|
mReflowCountMgr->SetPresContext(mPresContext);
|
|
mReflowCountMgr->SetPresShell(this);
|
|
#endif
|
|
#ifdef PR_LOGGING
|
|
if (! gLog)
|
|
gLog = PR_NewLogModule("PresShell");
|
|
#endif
|
|
mSelectionFlags = nsISelectionDisplay::DISPLAY_TEXT | nsISelectionDisplay::DISPLAY_IMAGES;
|
|
mIsThemeSupportDisabled = false;
|
|
mIsActive = true;
|
|
// FIXME/bug 735029: find a better solution to this problem
|
|
#ifdef MOZ_ANDROID_OMTC
|
|
// The java pan/zoom code uses this to mean approximately "request a
|
|
// reset of pan/zoom state" which doesn't necessarily correspond
|
|
// with the first paint of content.
|
|
mIsFirstPaint = false;
|
|
#else
|
|
mIsFirstPaint = true;
|
|
#endif
|
|
mPresShellId = sNextPresShellId++;
|
|
mFrozen = false;
|
|
#ifdef DEBUG
|
|
mPresArenaAllocCount = 0;
|
|
#endif
|
|
mRenderFlags = 0;
|
|
mXResolution = 1.0;
|
|
mYResolution = 1.0;
|
|
mViewportOverridden = false;
|
|
|
|
mScrollPositionClampingScrollPortSizeSet = false;
|
|
|
|
mMaxLineBoxWidth = 0;
|
|
|
|
static bool addedSynthMouseMove = false;
|
|
if (!addedSynthMouseMove) {
|
|
Preferences::AddBoolVarCache(&sSynthMouseMove,
|
|
"layout.reflow.synthMouseMove", true);
|
|
addedSynthMouseMove = true;
|
|
}
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS7(PresShell, nsIPresShell, nsIDocumentObserver,
|
|
nsISelectionController,
|
|
nsISelectionDisplay, nsIObserver, nsISupportsWeakReference,
|
|
nsIMutationObserver)
|
|
|
|
PresShell::~PresShell()
|
|
{
|
|
if (!mHaveShutDown) {
|
|
NS_NOTREACHED("Someone did not call nsIPresShell::destroy");
|
|
Destroy();
|
|
}
|
|
|
|
NS_ASSERTION(mCurrentEventContentStack.Count() == 0,
|
|
"Huh, event content left on the stack in pres shell dtor!");
|
|
NS_ASSERTION(mFirstCallbackEventRequest == nullptr &&
|
|
mLastCallbackEventRequest == nullptr,
|
|
"post-reflow queues not empty. This means we're leaking");
|
|
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(mPresArenaAllocCount == 0,
|
|
"Some pres arena objects were not freed");
|
|
#endif
|
|
|
|
delete mStyleSet;
|
|
delete mFrameConstructor;
|
|
|
|
mCurrentEventContent = nullptr;
|
|
|
|
NS_IF_RELEASE(mPresContext);
|
|
NS_IF_RELEASE(mDocument);
|
|
NS_IF_RELEASE(mSelection);
|
|
}
|
|
|
|
/**
|
|
* Initialize the presentation shell. Create view manager and style
|
|
* manager.
|
|
* Note this can't be merged into our constructor because caret initialization
|
|
* calls AddRef() on us.
|
|
*/
|
|
void
|
|
PresShell::Init(nsIDocument* aDocument,
|
|
nsPresContext* aPresContext,
|
|
nsViewManager* aViewManager,
|
|
nsStyleSet* aStyleSet,
|
|
nsCompatibility aCompatMode)
|
|
{
|
|
NS_PRECONDITION(aDocument, "null ptr");
|
|
NS_PRECONDITION(aPresContext, "null ptr");
|
|
NS_PRECONDITION(aViewManager, "null ptr");
|
|
NS_PRECONDITION(!mDocument, "already initialized");
|
|
|
|
if (!aDocument || !aPresContext || !aViewManager || mDocument) {
|
|
return;
|
|
}
|
|
|
|
mDocument = aDocument;
|
|
NS_ADDREF(mDocument);
|
|
mViewManager = aViewManager;
|
|
|
|
// Create our frame constructor.
|
|
mFrameConstructor = new nsCSSFrameConstructor(mDocument, this, aStyleSet);
|
|
|
|
mFrameManager = mFrameConstructor;
|
|
|
|
// The document viewer owns both view manager and pres shell.
|
|
mViewManager->SetPresShell(this);
|
|
|
|
// Bind the context to the presentation shell.
|
|
mPresContext = aPresContext;
|
|
NS_ADDREF(mPresContext);
|
|
aPresContext->SetShell(this);
|
|
|
|
// Now we can initialize the style set.
|
|
aStyleSet->Init(aPresContext);
|
|
mStyleSet = aStyleSet;
|
|
|
|
// Notify our prescontext that it now has a compatibility mode. Note that
|
|
// this MUST happen after we set up our style set but before we create any
|
|
// frames.
|
|
mPresContext->CompatibilityModeChanged();
|
|
|
|
// setup the preference style rules (no forced reflow), and do it
|
|
// before creating any frames.
|
|
SetPreferenceStyleRules(false);
|
|
|
|
NS_ADDREF(mSelection = new nsFrameSelection());
|
|
|
|
mSelection->Init(this, nullptr);
|
|
|
|
// Important: this has to happen after the selection has been set up
|
|
#ifdef SHOW_CARET
|
|
// make the caret
|
|
mCaret = new nsCaret();
|
|
mCaret->Init(this);
|
|
mOriginalCaret = mCaret;
|
|
|
|
//SetCaretEnabled(true); // make it show in browser windows
|
|
#endif
|
|
//set up selection to be displayed in document
|
|
// Don't enable selection for print media
|
|
nsPresContext::nsPresContextType type = aPresContext->Type();
|
|
if (type != nsPresContext::eContext_PrintPreview &&
|
|
type != nsPresContext::eContext_Print)
|
|
SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
|
|
|
|
if (gMaxRCProcessingTime == -1) {
|
|
gMaxRCProcessingTime =
|
|
Preferences::GetInt("layout.reflow.timeslice", NS_MAX_REFLOW_TIME);
|
|
}
|
|
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
os->AddObserver(this, "agent-sheet-added", false);
|
|
os->AddObserver(this, "user-sheet-added", false);
|
|
os->AddObserver(this, "author-sheet-added", false);
|
|
os->AddObserver(this, "agent-sheet-removed", false);
|
|
os->AddObserver(this, "user-sheet-removed", false);
|
|
os->AddObserver(this, "author-sheet-removed", false);
|
|
#ifdef MOZ_XUL
|
|
os->AddObserver(this, "chrome-flush-skin-caches", false);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
if (mReflowCountMgr) {
|
|
bool paintFrameCounts =
|
|
Preferences::GetBool("layout.reflow.showframecounts");
|
|
|
|
bool dumpFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframecounts");
|
|
|
|
bool dumpFrameByFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframebyframecounts");
|
|
|
|
mReflowCountMgr->SetDumpFrameCounts(dumpFrameCounts);
|
|
mReflowCountMgr->SetDumpFrameByFrameCounts(dumpFrameByFrameCounts);
|
|
mReflowCountMgr->SetPaintFrameCounts(paintFrameCounts);
|
|
}
|
|
#endif
|
|
|
|
if (mDocument->HasAnimationController()) {
|
|
nsSMILAnimationController* animCtrl = mDocument->GetAnimationController();
|
|
animCtrl->NotifyRefreshDriverCreated(GetPresContext()->RefreshDriver());
|
|
}
|
|
|
|
// Get our activeness from the docShell.
|
|
QueryIsActive();
|
|
|
|
// Setup our font inflation preferences.
|
|
SetupFontInflation();
|
|
}
|
|
|
|
void
|
|
PresShell::Destroy()
|
|
{
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"destroy called on presshell while scripts not blocked");
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
DumpReflows();
|
|
if (mReflowCountMgr) {
|
|
delete mReflowCountMgr;
|
|
mReflowCountMgr = nullptr;
|
|
}
|
|
#endif
|
|
|
|
if (mHaveShutDown)
|
|
return;
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (mDocAccessible) {
|
|
#ifdef DEBUG
|
|
if (a11y::logging::IsEnabled(a11y::logging::eDocDestroy))
|
|
a11y::logging::DocDestroy("presshell destroyed", mDocument);
|
|
#endif
|
|
|
|
mDocAccessible->Shutdown();
|
|
mDocAccessible = nullptr;
|
|
}
|
|
#endif // ACCESSIBILITY
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
if (gKeyDownTarget && gKeyDownTarget->OwnerDoc() == mDocument) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
|
|
if (mPresContext) {
|
|
// We need to notify the destroying the nsPresContext to ESM for
|
|
// suppressing to use from ESM.
|
|
mPresContext->EventStateManager()->NotifyDestroyPresContext(mPresContext);
|
|
}
|
|
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
os->RemoveObserver(this, "agent-sheet-added");
|
|
os->RemoveObserver(this, "user-sheet-added");
|
|
os->RemoveObserver(this, "author-sheet-added");
|
|
os->RemoveObserver(this, "agent-sheet-removed");
|
|
os->RemoveObserver(this, "user-sheet-removed");
|
|
os->RemoveObserver(this, "author-sheet-removed");
|
|
#ifdef MOZ_XUL
|
|
os->RemoveObserver(this, "chrome-flush-skin-caches");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// If our paint suppression timer is still active, kill it.
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nullptr;
|
|
}
|
|
|
|
// Same for our reflow continuation timer
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nullptr;
|
|
}
|
|
|
|
mSynthMouseMoveEvent.Revoke();
|
|
|
|
mUpdateImageVisibilityEvent.Revoke();
|
|
|
|
ClearVisibleImagesList();
|
|
|
|
if (mCaret) {
|
|
mCaret->Terminate();
|
|
mCaret = nullptr;
|
|
}
|
|
|
|
if (mSelection) {
|
|
mSelection->DisconnectFromPresShell();
|
|
}
|
|
|
|
// release our pref style sheet, if we have one still
|
|
ClearPreferenceStyleRules();
|
|
|
|
mIsDestroying = true;
|
|
|
|
// We can't release all the event content in
|
|
// mCurrentEventContentStack here since there might be code on the
|
|
// stack that will release the event content too. Double release
|
|
// bad!
|
|
|
|
// The frames will be torn down, so remove them from the current
|
|
// event frame stack (since they'd be dangling references if we'd
|
|
// leave them in) and null out the mCurrentEventFrame pointer as
|
|
// well.
|
|
|
|
mCurrentEventFrame = nullptr;
|
|
|
|
int32_t i, count = mCurrentEventFrameStack.Length();
|
|
for (i = 0; i < count; i++) {
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
|
|
mFramesToDirty.Clear();
|
|
|
|
if (mViewManager) {
|
|
// Clear the view manager's weak pointer back to |this| in case it
|
|
// was leaked.
|
|
mViewManager->SetPresShell(nullptr);
|
|
mViewManager = nullptr;
|
|
}
|
|
|
|
mStyleSet->BeginShutdown(mPresContext);
|
|
nsRefreshDriver* rd = GetPresContext()->RefreshDriver();
|
|
|
|
// This shell must be removed from the document before the frame
|
|
// hierarchy is torn down to avoid finding deleted frames through
|
|
// this presshell while the frames are being torn down
|
|
if (mDocument) {
|
|
NS_ASSERTION(mDocument->GetShell() == this, "Wrong shell?");
|
|
mDocument->DeleteShell();
|
|
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->NotifyRefreshDriverDestroying(rd);
|
|
}
|
|
}
|
|
|
|
// Revoke any pending events. We need to do this and cancel pending reflows
|
|
// before we destroy the frame manager, since apparently frame destruction
|
|
// sometimes spins the event queue when plug-ins are involved(!).
|
|
rd->RemoveLayoutFlushObserver(this);
|
|
if (mHiddenInvalidationObserverRefreshDriver) {
|
|
mHiddenInvalidationObserverRefreshDriver->RemovePresShellToInvalidateIfHidden(this);
|
|
}
|
|
|
|
if (rd->PresContext() == GetPresContext()) {
|
|
rd->RevokeViewManagerFlush();
|
|
}
|
|
|
|
mResizeEvent.Revoke();
|
|
if (mAsyncResizeTimerIsActive) {
|
|
mAsyncResizeEventTimer->Cancel();
|
|
mAsyncResizeTimerIsActive = false;
|
|
}
|
|
|
|
CancelAllPendingReflows();
|
|
CancelPostedReflowCallbacks();
|
|
|
|
// Destroy the frame manager. This will destroy the frame hierarchy
|
|
mFrameConstructor->WillDestroyFrameTree();
|
|
|
|
// Destroy all frame properties (whose destruction was suppressed
|
|
// while destroying the frame tree, but which might contain more
|
|
// frames within the properties.
|
|
if (mPresContext) {
|
|
// Clear out the prescontext's property table -- since our frame tree is
|
|
// now dead, we shouldn't be looking up any more properties in that table.
|
|
// We want to do this before we call SetShell() on the prescontext, so
|
|
// property destructors can usefully call GetPresShell() on the
|
|
// prescontext.
|
|
mPresContext->PropertyTable()->DeleteAll();
|
|
}
|
|
|
|
|
|
NS_WARN_IF_FALSE(!mWeakFrames, "Weak frames alive after destroying FrameManager");
|
|
while (mWeakFrames) {
|
|
mWeakFrames->Clear(this);
|
|
}
|
|
|
|
// Let the style set do its cleanup.
|
|
mStyleSet->Shutdown(mPresContext);
|
|
|
|
if (mPresContext) {
|
|
// We hold a reference to the pres context, and it holds a weak link back
|
|
// to us. To avoid the pres context having a dangling reference, set its
|
|
// pres shell to nullptr
|
|
mPresContext->SetShell(nullptr);
|
|
|
|
// Clear the link handler (weak reference) as well
|
|
mPresContext->SetLinkHandler(nullptr);
|
|
}
|
|
|
|
mHaveShutDown = true;
|
|
}
|
|
|
|
void
|
|
PresShell::MakeZombie()
|
|
{
|
|
mIsZombie = true;
|
|
CancelAllPendingReflows();
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetAuthorStyleDisabled(bool aStyleDisabled)
|
|
{
|
|
if (aStyleDisabled != mStyleSet->GetAuthorStyleDisabled()) {
|
|
mStyleSet->SetAuthorStyleDisabled(aStyleDisabled);
|
|
ReconstructStyleData();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::GetAuthorStyleDisabled() const
|
|
{
|
|
return mStyleSet->GetAuthorStyleDisabled();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetPreferenceStyleRules(bool aForceReflow)
|
|
{
|
|
if (!mDocument) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
|
|
// If the document doesn't have a window there's no need to notify
|
|
// its presshell about changes to preferences since the document is
|
|
// in a state where it doesn't matter any more (see
|
|
// nsDocumentViewer::Close()).
|
|
|
|
if (!window) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
NS_PRECONDITION(mPresContext, "presContext cannot be null");
|
|
if (mPresContext) {
|
|
// first, make sure this is not a chrome shell
|
|
if (nsContentUtils::IsInChromeDocshell(mDocument)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG_attinasi
|
|
printf("Setting Preference Style Rules:\n");
|
|
#endif
|
|
// if here, we need to create rules for the prefs
|
|
// - this includes the background-color, the text-color,
|
|
// the link color, the visited link color and the link-underlining
|
|
|
|
// first clear any exising rules
|
|
nsresult result = ClearPreferenceStyleRules();
|
|
|
|
// now the link rules (must come after the color rules, or links will not be correct color!)
|
|
// XXX - when there is both an override and agent pref stylesheet this won't matter,
|
|
// as the color rules will be overrides and the links rules will be agent
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefLinkRules();
|
|
}
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefFocusRules();
|
|
}
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefNoScriptRule();
|
|
}
|
|
if (NS_SUCCEEDED(result)) {
|
|
result = SetPrefNoFramesRule();
|
|
}
|
|
#ifdef DEBUG_attinasi
|
|
printf( "Preference Style Rules set: error=%ld\n", (long)result);
|
|
#endif
|
|
|
|
// Note that this method never needs to force any calculation; the caller
|
|
// will recalculate style if needed
|
|
|
|
return result;
|
|
}
|
|
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsresult PresShell::ClearPreferenceStyleRules(void)
|
|
{
|
|
nsresult result = NS_OK;
|
|
if (mPrefStyleSheet) {
|
|
NS_ASSERTION(mStyleSet, "null styleset entirely unexpected!");
|
|
if (mStyleSet) {
|
|
// remove the sheet from the styleset:
|
|
// - note that we have to check for success by comparing the count before and after...
|
|
#ifdef DEBUG
|
|
int32_t numBefore = mStyleSet->SheetCount(nsStyleSet::eUserSheet);
|
|
NS_ASSERTION(numBefore > 0, "no user stylesheets in styleset, but we have one!");
|
|
#endif
|
|
mStyleSet->RemoveStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
|
|
|
|
#ifdef DEBUG_attinasi
|
|
NS_ASSERTION((numBefore - 1) == mStyleSet->GetNumberOfUserStyleSheets(),
|
|
"Pref stylesheet was not removed");
|
|
printf("PrefStyleSheet removed\n");
|
|
#endif
|
|
// clear the sheet pointer: it is strictly historical now
|
|
mPrefStyleSheet = nullptr;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CreatePreferenceStyleSheet()
|
|
{
|
|
NS_ASSERTION(!mPrefStyleSheet, "prefStyleSheet already exists");
|
|
mPrefStyleSheet = new nsCSSStyleSheet(CORS_NONE);
|
|
nsCOMPtr<nsIURI> uri;
|
|
nsresult rv = NS_NewURI(getter_AddRefs(uri), "about:PreferenceStyleSheet", nullptr);
|
|
if (NS_FAILED(rv)) {
|
|
mPrefStyleSheet = nullptr;
|
|
return rv;
|
|
}
|
|
NS_ASSERTION(uri, "null but no error");
|
|
mPrefStyleSheet->SetURIs(uri, uri, uri);
|
|
mPrefStyleSheet->SetComplete();
|
|
uint32_t index;
|
|
rv =
|
|
mPrefStyleSheet->InsertRuleInternal(NS_LITERAL_STRING("@namespace svg url(http://www.w3.org/2000/svg);"),
|
|
0, &index);
|
|
if (NS_FAILED(rv)) {
|
|
mPrefStyleSheet = nullptr;
|
|
return rv;
|
|
}
|
|
rv =
|
|
mPrefStyleSheet->InsertRuleInternal(NS_LITERAL_STRING("@namespace url(http://www.w3.org/1999/xhtml);"),
|
|
0, &index);
|
|
if (NS_FAILED(rv)) {
|
|
mPrefStyleSheet = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eUserSheet, mPrefStyleSheet);
|
|
return NS_OK;
|
|
}
|
|
|
|
// XXX We want these after the @namespace rules. Does order matter
|
|
// for these rules, or can we call StyleRule::StyleRuleCount()
|
|
// and just "append"?
|
|
static uint32_t sInsertPrefSheetRulesAt = 2;
|
|
|
|
nsresult
|
|
PresShell::SetPrefNoScriptRule()
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
// also handle the case where print is done from print preview
|
|
// see bug #342439 for more details
|
|
nsIDocument* doc = mDocument;
|
|
if (doc->IsStaticDocument()) {
|
|
doc = doc->GetOriginalDocument();
|
|
}
|
|
|
|
bool scriptEnabled = doc->IsScriptEnabled();
|
|
if (scriptEnabled) {
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
uint32_t index = 0;
|
|
mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("noscript{display:none!important}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefNoFramesRule(void)
|
|
{
|
|
NS_ASSERTION(mPresContext,"null prescontext not allowed");
|
|
if (!mPresContext) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
|
|
|
|
bool allowSubframes = true;
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
|
|
if (docShell) {
|
|
docShell->GetAllowSubframes(&allowSubframes);
|
|
}
|
|
if (!allowSubframes) {
|
|
uint32_t index = 0;
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("noframes{display:block}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("frame, frameset, iframe {display:none!important}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefLinkRules(void)
|
|
{
|
|
NS_ASSERTION(mPresContext,"null prescontext not allowed");
|
|
if (!mPresContext) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!mPrefStyleSheet) {
|
|
rv = CreatePreferenceStyleSheet();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
|
|
|
|
// support default link colors:
|
|
// this means the link colors need to be overridable,
|
|
// which they are if we put them in the agent stylesheet,
|
|
// though if using an override sheet this will cause authors grief still
|
|
// In the agent stylesheet, they are !important when we are ignoring document colors
|
|
|
|
nscolor linkColor(mPresContext->DefaultLinkColor());
|
|
nscolor activeColor(mPresContext->DefaultActiveLinkColor());
|
|
nscolor visitedColor(mPresContext->DefaultVisitedLinkColor());
|
|
|
|
NS_NAMED_LITERAL_STRING(ruleClose, "}");
|
|
uint32_t index = 0;
|
|
nsAutoString strColor;
|
|
|
|
// insert a rule to color links: '*|*:link {color: #RRGGBB [!important];}'
|
|
ColorToString(linkColor, strColor);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:link{color:") +
|
|
strColor + ruleClose,
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// - visited links: '*|*:visited {color: #RRGGBB [!important];}'
|
|
ColorToString(visitedColor, strColor);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:visited{color:") +
|
|
strColor + ruleClose,
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// - active links: '*|*:-moz-any-link:active {color: #RRGGBB [!important];}'
|
|
ColorToString(activeColor, strColor);
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:-moz-any-link:active{color:") +
|
|
strColor + ruleClose,
|
|
sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool underlineLinks =
|
|
mPresContext->GetCachedBoolPref(kPresContext_UnderlineLinks);
|
|
|
|
if (underlineLinks) {
|
|
// create a rule to make underlining happen
|
|
// '*|*:-moz-any-link {text-decoration:[underline|none];}'
|
|
// no need for important, we want these to be overridable
|
|
// NOTE: these must go in the agent stylesheet or they cannot be
|
|
// overridden by authors
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:-moz-any-link:not(svg|a){text-decoration:underline}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
} else {
|
|
rv = mPrefStyleSheet->
|
|
InsertRuleInternal(NS_LITERAL_STRING("*|*:-moz-any-link{text-decoration:none}"),
|
|
sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::SetPrefFocusRules(void)
|
|
{
|
|
NS_ASSERTION(mPresContext,"null prescontext not allowed");
|
|
nsresult result = NS_OK;
|
|
|
|
if (!mPresContext)
|
|
result = NS_ERROR_FAILURE;
|
|
|
|
if (NS_SUCCEEDED(result) && !mPrefStyleSheet)
|
|
result = CreatePreferenceStyleSheet();
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
NS_ASSERTION(mPrefStyleSheet, "prefstylesheet should not be null");
|
|
|
|
if (mPresContext->GetUseFocusColors()) {
|
|
nscolor focusBackground(mPresContext->FocusBackgroundColor());
|
|
nscolor focusText(mPresContext->FocusTextColor());
|
|
|
|
// insert a rule to make focus the preferred color
|
|
uint32_t index = 0;
|
|
nsAutoString strRule, strColor;
|
|
|
|
///////////////////////////////////////////////////////////////
|
|
// - focus: '*:focus
|
|
ColorToString(focusText,strColor);
|
|
strRule.AppendLiteral("*:focus,*:focus>font {color: ");
|
|
strRule.Append(strColor);
|
|
strRule.AppendLiteral(" !important; background-color: ");
|
|
ColorToString(focusBackground,strColor);
|
|
strRule.Append(strColor);
|
|
strRule.AppendLiteral(" !important; } ");
|
|
// insert the rules
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
uint8_t focusRingWidth = mPresContext->FocusRingWidth();
|
|
bool focusRingOnAnything = mPresContext->GetFocusRingOnAnything();
|
|
uint8_t focusRingStyle = mPresContext->GetFocusRingStyle();
|
|
|
|
if ((NS_SUCCEEDED(result) && focusRingWidth != 1 && focusRingWidth <= 4 ) || focusRingOnAnything) {
|
|
uint32_t index = 0;
|
|
nsAutoString strRule;
|
|
if (!focusRingOnAnything)
|
|
strRule.AppendLiteral("*|*:link:focus, *|*:visited"); // If we only want focus rings on the normal things like links
|
|
strRule.AppendLiteral(":focus {outline: "); // For example 3px dotted WindowText (maximum 4)
|
|
strRule.AppendInt(focusRingWidth);
|
|
if (focusRingStyle == 0) // solid
|
|
strRule.AppendLiteral("px solid -moz-mac-focusring !important; -moz-outline-radius: 3px; outline-offset: 1px; } ");
|
|
else // dotted
|
|
strRule.AppendLiteral("px dotted WindowText !important; } ");
|
|
// insert the rules
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
if (focusRingWidth != 1) {
|
|
// If the focus ring width is different from the default, fix buttons with rings
|
|
strRule.AssignLiteral("button::-moz-focus-inner, input[type=\"reset\"]::-moz-focus-inner,");
|
|
strRule.AppendLiteral("input[type=\"button\"]::-moz-focus-inner, ");
|
|
strRule.AppendLiteral("input[type=\"submit\"]::-moz-focus-inner { padding: 1px 2px 1px 2px; border: ");
|
|
strRule.AppendInt(focusRingWidth);
|
|
if (focusRingStyle == 0) // solid
|
|
strRule.AppendLiteral("px solid transparent !important; } ");
|
|
else
|
|
strRule.AppendLiteral("px dotted transparent !important; } ");
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
strRule.AssignLiteral("button:focus::-moz-focus-inner, input[type=\"reset\"]:focus::-moz-focus-inner,");
|
|
strRule.AppendLiteral("input[type=\"button\"]:focus::-moz-focus-inner, input[type=\"submit\"]:focus::-moz-focus-inner {");
|
|
strRule.AppendLiteral("border-color: ButtonText !important; }");
|
|
result = mPrefStyleSheet->
|
|
InsertRuleInternal(strRule, sInsertPrefSheetRulesAt, &index);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void
|
|
PresShell::AddUserSheet(nsISupports* aSheet)
|
|
{
|
|
// Make sure this does what nsDocumentViewer::CreateStyleSet does wrt
|
|
// ordering. We want this new sheet to come after all the existing stylesheet
|
|
// service sheets, but before other user sheets; see nsIStyleSheetService.idl
|
|
// for the ordering. Just remove and readd all the nsStyleSheetService
|
|
// sheets.
|
|
nsCOMPtr<nsIStyleSheetService> dummy =
|
|
do_GetService(NS_STYLESHEETSERVICE_CONTRACTID);
|
|
|
|
mStyleSet->BeginUpdate();
|
|
|
|
nsStyleSheetService *sheetService = nsStyleSheetService::gInstance;
|
|
nsCOMArray<nsIStyleSheet> & userSheets = *sheetService->UserStyleSheets();
|
|
int32_t i;
|
|
// Iterate forwards when removing so the searches for RemoveStyleSheet are as
|
|
// short as possible.
|
|
for (i = 0; i < userSheets.Count(); ++i) {
|
|
mStyleSet->RemoveStyleSheet(nsStyleSet::eUserSheet, userSheets[i]);
|
|
}
|
|
|
|
// Now iterate backwards, so that the order of userSheets will be the same as
|
|
// the order of sheets from it in the style set.
|
|
for (i = userSheets.Count() - 1; i >= 0; --i) {
|
|
mStyleSet->PrependStyleSheet(nsStyleSet::eUserSheet, userSheets[i]);
|
|
}
|
|
|
|
mStyleSet->EndUpdate();
|
|
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
void
|
|
PresShell::AddAgentSheet(nsISupports* aSheet)
|
|
{
|
|
// Make sure this does what nsDocumentViewer::CreateStyleSet does
|
|
// wrt ordering.
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eAgentSheet, sheet);
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
void
|
|
PresShell::AddAuthorSheet(nsISupports* aSheet)
|
|
{
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
// Document specific "additional" Author sheets should be stronger than the ones
|
|
// added with the StyleSheetService.
|
|
nsIStyleSheet* firstAuthorSheet = mDocument->FirstAdditionalAuthorSheet();
|
|
if (firstAuthorSheet) {
|
|
mStyleSet->InsertStyleSheetBefore(nsStyleSet::eDocSheet, sheet, firstAuthorSheet);
|
|
} else {
|
|
mStyleSet->AppendStyleSheet(nsStyleSet::eDocSheet, sheet);
|
|
}
|
|
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
void
|
|
PresShell::RemoveSheet(nsStyleSet::sheetType aType, nsISupports* aSheet)
|
|
{
|
|
nsCOMPtr<nsIStyleSheet> sheet = do_QueryInterface(aSheet);
|
|
if (!sheet) {
|
|
return;
|
|
}
|
|
|
|
mStyleSet->RemoveStyleSheet(aType, sheet);
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::SetDisplaySelection(int16_t aToggle)
|
|
{
|
|
mSelection->SetDisplaySelection(aToggle);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetDisplaySelection(int16_t *aToggle)
|
|
{
|
|
*aToggle = mSelection->GetDisplaySelection();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetSelection(SelectionType aType, nsISelection **aSelection)
|
|
{
|
|
if (!aSelection || !mSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
*aSelection = mSelection->GetSelection(aType);
|
|
|
|
if (!(*aSelection))
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
NS_ADDREF(*aSelection);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
Selection*
|
|
PresShell::GetCurrentSelection(SelectionType aType)
|
|
{
|
|
if (!mSelection)
|
|
return nullptr;
|
|
|
|
return mSelection->GetSelection(aType);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollSelectionIntoView(SelectionType aType, SelectionRegion aRegion,
|
|
int16_t aFlags)
|
|
{
|
|
if (!mSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mSelection->ScrollSelectionIntoView(aType, aRegion, aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::RepaintSelection(SelectionType aType)
|
|
{
|
|
if (!mSelection)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mSelection->RepaintSelection(aType);
|
|
}
|
|
|
|
// Make shell be a document observer
|
|
void
|
|
PresShell::BeginObservingDocument()
|
|
{
|
|
if (mDocument && !mIsDestroying) {
|
|
mDocument->AddObserver(this);
|
|
if (mIsDocumentGone) {
|
|
NS_WARNING("Adding a presshell that was disconnected from the document "
|
|
"as a document observer? Sounds wrong...");
|
|
mIsDocumentGone = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make shell stop being a document observer
|
|
void
|
|
PresShell::EndObservingDocument()
|
|
{
|
|
// XXXbz do we need to tell the frame constructor that the document
|
|
// is gone, perhaps? Except for printing it's NOT gone, sometimes.
|
|
mIsDocumentGone = true;
|
|
if (mDocument) {
|
|
mDocument->RemoveObserver(this);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_kipp
|
|
char* nsPresShell_ReflowStackPointerTop;
|
|
#endif
|
|
|
|
nsresult
|
|
PresShell::Initialize(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (mIsDestroying) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mDocument) {
|
|
// Nothing to do
|
|
return NS_OK;
|
|
}
|
|
|
|
mozilla::TimeStamp timerStart = mozilla::TimeStamp::Now();
|
|
|
|
NS_ASSERTION(!mDidInitialize, "Why are we being called?");
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
mDidInitialize = true;
|
|
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
if (mDocument) {
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
nsAutoCString url;
|
|
uri->GetSpec(url);
|
|
printf("*** PresShell::Initialize (this=%p, url='%s')\n", (void*)this, url.get());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (mCaret)
|
|
mCaret->EraseCaret();
|
|
|
|
// XXX Do a full invalidate at the beginning so that invalidates along
|
|
// the way don't have region accumulation issues?
|
|
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, aWidth, aHeight));
|
|
|
|
// Get the root frame from the frame manager
|
|
// XXXbz it would be nice to move this somewhere else... like frame manager
|
|
// Init(), say. But we need to make sure our views are all set up by the
|
|
// time we do this!
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
NS_ASSERTION(!rootFrame, "How did that happen, exactly?");
|
|
if (!rootFrame) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->BeginUpdate();
|
|
rootFrame = mFrameConstructor->ConstructRootFrame();
|
|
mFrameConstructor->SetRootFrame(rootFrame);
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
if (!rootFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
for (nsIFrame* f = rootFrame; f; f = nsLayoutUtils::GetCrossDocParentFrame(f)) {
|
|
if (f->GetStateBits() & NS_FRAME_NO_COMPONENT_ALPHA) {
|
|
f->InvalidateFrameSubtree();
|
|
f->RemoveStateBits(NS_FRAME_NO_COMPONENT_ALPHA);
|
|
}
|
|
}
|
|
|
|
Element *root = mDocument->GetRootElement();
|
|
|
|
if (root) {
|
|
{
|
|
nsAutoCauseReflowNotifier reflowNotifier(this);
|
|
mFrameConstructor->BeginUpdate();
|
|
|
|
// Have the style sheet processor construct frame for the root
|
|
// content object down
|
|
mFrameConstructor->ContentInserted(nullptr, root, nullptr, false);
|
|
VERIFY_STYLE_TREE;
|
|
|
|
// Something in mFrameConstructor->ContentInserted may have caused
|
|
// Destroy() to get called, bug 337586.
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
// nsAutoScriptBlocker going out of scope may have killed us too
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
// Run the XBL binding constructors for any new frames we've constructed
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
|
|
// Constructors may have killed us too
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
// Now flush out pending restyles before we actually reflow, in
|
|
// case XBL constructors changed styles somewhere.
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
// And that might have run _more_ XBL constructors
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
}
|
|
|
|
NS_ASSERTION(rootFrame, "How did that happen?");
|
|
|
|
// Note: when the frame was created above it had the NS_FRAME_IS_DIRTY bit
|
|
// set, but XBL processing could have caused a reflow which clears it.
|
|
if (MOZ_LIKELY(rootFrame->GetStateBits() & NS_FRAME_IS_DIRTY)) {
|
|
// Unset the DIRTY bits so that FrameNeedsReflow() will work right.
|
|
rootFrame->RemoveStateBits(NS_FRAME_IS_DIRTY |
|
|
NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
NS_ASSERTION(!mDirtyRoots.Contains(rootFrame),
|
|
"Why is the root in mDirtyRoots already?");
|
|
FrameNeedsReflow(rootFrame, eResize, NS_FRAME_IS_DIRTY);
|
|
NS_ASSERTION(mDirtyRoots.Contains(rootFrame),
|
|
"Should be in mDirtyRoots now");
|
|
NS_ASSERTION(mReflowScheduled, "Why no reflow scheduled?");
|
|
}
|
|
|
|
// Restore our root scroll position now if we're getting here after EndLoad
|
|
// got called, since this is our one chance to do it. Note that we need not
|
|
// have reflowed for this to work; when the scrollframe is finally reflowed
|
|
// it'll pick up the position we store in it here.
|
|
if (!mDocumentLoading) {
|
|
RestoreRootScrollPosition();
|
|
}
|
|
|
|
// For printing, we just immediately unsuppress.
|
|
if (!mPresContext->IsPaginated()) {
|
|
// Kick off a one-shot timer based off our pref value. When this timer
|
|
// fires, if painting is still locked down, then we will go ahead and
|
|
// trigger a full invalidate and allow painting to proceed normally.
|
|
mPaintingSuppressed = true;
|
|
// Don't suppress painting if the document isn't loading.
|
|
nsIDocument::ReadyState readyState = mDocument->GetReadyStateEnum();
|
|
if (readyState != nsIDocument::READYSTATE_COMPLETE) {
|
|
mPaintSuppressionTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
}
|
|
if (!mPaintSuppressionTimer) {
|
|
mPaintingSuppressed = false;
|
|
} else {
|
|
// Initialize the timer.
|
|
|
|
// Default to PAINTLOCK_EVENT_DELAY if we can't get the pref value.
|
|
int32_t delay =
|
|
Preferences::GetInt("nglayout.initialpaint.delay",
|
|
PAINTLOCK_EVENT_DELAY);
|
|
|
|
mPaintSuppressionTimer->InitWithFuncCallback(sPaintSuppressionCallback,
|
|
this, delay,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
}
|
|
|
|
if (root && root->IsXUL()) {
|
|
mozilla::Telemetry::AccumulateTimeDelta(Telemetry::XUL_INITIAL_FRAME_CONSTRUCTION,
|
|
timerStart);
|
|
}
|
|
|
|
return NS_OK; //XXX this needs to be real. MMP
|
|
}
|
|
|
|
void
|
|
PresShell::sPaintSuppressionCallback(nsITimer *aTimer, void* aPresShell)
|
|
{
|
|
nsRefPtr<PresShell> self = static_cast<PresShell*>(aPresShell);
|
|
if (self)
|
|
self->UnsuppressPainting();
|
|
}
|
|
|
|
void
|
|
PresShell::AsyncResizeEventCallback(nsITimer* aTimer, void* aPresShell)
|
|
{
|
|
static_cast<PresShell*>(aPresShell)->FireResizeEvent();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ResizeReflowOverride(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
mViewportOverridden = true;
|
|
return ResizeReflowIgnoreOverride(aWidth, aHeight);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (mViewportOverridden) {
|
|
// The viewport has been overridden, and this reflow request
|
|
// didn't ask to ignore the override. Pretend it didn't happen.
|
|
return NS_OK;
|
|
}
|
|
return ResizeReflowIgnoreOverride(aWidth, aHeight);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ResizeReflowIgnoreOverride(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
NS_PRECONDITION(!mIsReflowing, "Shouldn't be in reflow here!");
|
|
NS_PRECONDITION(aWidth != NS_UNCONSTRAINEDSIZE,
|
|
"shouldn't use unconstrained widths anymore");
|
|
|
|
// If we don't have a root frame yet, that means we haven't had our initial
|
|
// reflow... If that's the case, and aWidth or aHeight is unconstrained,
|
|
// ignore them altogether.
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
|
|
if (!rootFrame && aHeight == NS_UNCONSTRAINEDSIZE) {
|
|
// We can't do the work needed for SizeToContent without a root
|
|
// frame, and we want to return before setting the visible area.
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
nsRefPtr<nsViewManager> viewManagerDeathGrip = mViewManager;
|
|
// Take this ref after viewManager so it'll make sure to go away first
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
if (!mIsDestroying && !mResizeEvent.IsPending() &&
|
|
!mAsyncResizeTimerIsActive) {
|
|
FireBeforeResizeEvent();
|
|
}
|
|
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, aWidth, aHeight));
|
|
|
|
// There isn't anything useful we can do if the initial reflow hasn't happened
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame)
|
|
return NS_OK;
|
|
|
|
if (!GetPresContext()->SupressingResizeReflow())
|
|
{
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
// Make sure style is up to date
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!mIsDestroying && rootFrame) {
|
|
// XXX Do a full invalidate at the beginning so that invalidates along
|
|
// the way don't have region accumulation issues?
|
|
|
|
{
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
WillDoReflow();
|
|
|
|
// Kick off a top-down reflow
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
|
|
nsViewManager::AutoDisableRefresh refreshBlocker(mViewManager);
|
|
|
|
mDirtyRoots.RemoveElement(rootFrame);
|
|
DoReflow(rootFrame, true);
|
|
}
|
|
|
|
DidDoReflow(true, false);
|
|
}
|
|
}
|
|
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (aHeight == NS_UNCONSTRAINEDSIZE && rootFrame) {
|
|
mPresContext->SetVisibleArea(
|
|
nsRect(0, 0, aWidth, rootFrame->GetRect().height));
|
|
}
|
|
|
|
if (!mIsDestroying && !mResizeEvent.IsPending() &&
|
|
!mAsyncResizeTimerIsActive) {
|
|
if (mInResize) {
|
|
if (!mAsyncResizeEventTimer) {
|
|
mAsyncResizeEventTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
}
|
|
if (mAsyncResizeEventTimer) {
|
|
mAsyncResizeTimerIsActive = true;
|
|
mAsyncResizeEventTimer->InitWithFuncCallback(AsyncResizeEventCallback,
|
|
this, 15,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
} else {
|
|
nsRefPtr<nsRunnableMethod<PresShell> > resizeEvent =
|
|
NS_NewRunnableMethod(this, &PresShell::FireResizeEvent);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(resizeEvent))) {
|
|
mResizeEvent = resizeEvent;
|
|
mDocument->SetNeedStyleFlush();
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK; //XXX this needs to be real. MMP
|
|
}
|
|
|
|
void
|
|
PresShell::FireBeforeResizeEvent()
|
|
{
|
|
if (mIsDocumentGone)
|
|
return;
|
|
|
|
// Send beforeresize event from here.
|
|
WidgetEvent event(true, NS_BEFORERESIZE_EVENT);
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
nsEventDispatcher::Dispatch(window, mPresContext, &event);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::FireResizeEvent()
|
|
{
|
|
if (mAsyncResizeTimerIsActive) {
|
|
mAsyncResizeTimerIsActive = false;
|
|
mAsyncResizeEventTimer->Cancel();
|
|
}
|
|
mResizeEvent.Revoke();
|
|
|
|
if (mIsDocumentGone)
|
|
return;
|
|
|
|
//Send resize event from here.
|
|
WidgetEvent event(true, NS_RESIZE_EVENT);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
nsPIDOMWindow *window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
mInResize = true;
|
|
nsEventDispatcher::Dispatch(window, mPresContext, &event, nullptr, &status);
|
|
mInResize = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::SetIgnoreFrameDestruction(bool aIgnore)
|
|
{
|
|
if (mDocument) {
|
|
// We need to tell the ImageLoader to drop all its references to frames
|
|
// because they're about to go away and it won't get notifications of that.
|
|
mDocument->StyleImageLoader()->ClearFrames();
|
|
}
|
|
mIgnoreFrameDestruction = aIgnore;
|
|
}
|
|
|
|
void
|
|
PresShell::NotifyDestroyingFrame(nsIFrame* aFrame)
|
|
{
|
|
if (!mIgnoreFrameDestruction) {
|
|
mDocument->StyleImageLoader()->DropRequestsForFrame(aFrame);
|
|
|
|
mFrameConstructor->NotifyDestroyingFrame(aFrame);
|
|
|
|
for (int32_t idx = mDirtyRoots.Length(); idx; ) {
|
|
--idx;
|
|
if (mDirtyRoots[idx] == aFrame) {
|
|
mDirtyRoots.RemoveElementAt(idx);
|
|
}
|
|
}
|
|
|
|
// Remove frame properties
|
|
mPresContext->NotifyDestroyingFrame(aFrame);
|
|
|
|
if (aFrame == mCurrentEventFrame) {
|
|
mCurrentEventContent = aFrame->GetContent();
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (aFrame == mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame = nullptr;
|
|
}
|
|
#endif
|
|
|
|
for (unsigned int i=0; i < mCurrentEventFrameStack.Length(); i++) {
|
|
if (aFrame == mCurrentEventFrameStack.ElementAt(i)) {
|
|
//One of our stack frames was deleted. Get its content so that when we
|
|
//pop it we can still get its new frame from its content
|
|
nsIContent *currentEventContent = aFrame->GetContent();
|
|
mCurrentEventContentStack.ReplaceObjectAt(currentEventContent, i);
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
}
|
|
|
|
mFramesToDirty.RemoveEntry(aFrame);
|
|
} else {
|
|
// We must delete this property in situ so that its destructor removes the
|
|
// frame from FrameLayerBuilder::DisplayItemData::mFrameList -- otherwise
|
|
// the DisplayItemData destructor will use the destroyed frame when it
|
|
// tries to remove it from the (array) value of this property.
|
|
mPresContext->PropertyTable()->
|
|
Delete(aFrame, FrameLayerBuilder::LayerManagerDataProperty());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsCaret> PresShell::GetCaret() const
|
|
{
|
|
nsRefPtr<nsCaret> caret = mCaret;
|
|
return caret.forget();
|
|
}
|
|
|
|
void PresShell::MaybeInvalidateCaretPosition()
|
|
{
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
}
|
|
|
|
void PresShell::SetCaret(nsCaret *aNewCaret)
|
|
{
|
|
mCaret = aNewCaret;
|
|
}
|
|
|
|
void PresShell::RestoreCaret()
|
|
{
|
|
mCaret = mOriginalCaret;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretEnabled(bool aInEnable)
|
|
{
|
|
bool oldEnabled = mCaretEnabled;
|
|
|
|
mCaretEnabled = aInEnable;
|
|
|
|
if (mCaret && (mCaretEnabled != oldEnabled))
|
|
{
|
|
/* Don't change the caret's selection here! This was an evil side-effect of SetCaretEnabled()
|
|
nsCOMPtr<nsIDOMSelection> domSel;
|
|
if (NS_SUCCEEDED(GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(domSel))) && domSel)
|
|
mCaret->SetCaretDOMSelection(domSel);
|
|
*/
|
|
mCaret->SetCaretVisible(mCaretEnabled);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretReadOnly(bool aReadOnly)
|
|
{
|
|
if (mCaret)
|
|
mCaret->SetCaretReadOnly(aReadOnly);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretEnabled(bool *aOutEnabled)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aOutEnabled);
|
|
*aOutEnabled = mCaretEnabled;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretVisibilityDuringSelection(bool aVisibility)
|
|
{
|
|
if (mCaret)
|
|
mCaret->SetVisibilityDuringSelection(aVisibility);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretVisible(bool *aOutIsVisible)
|
|
{
|
|
*aOutIsVisible = false;
|
|
if (mCaret) {
|
|
nsresult rv = mCaret->GetCaretVisible(aOutIsVisible);
|
|
NS_ENSURE_SUCCESS(rv,rv);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetSelectionFlags(int16_t aInEnable)
|
|
{
|
|
mSelectionFlags = aInEnable;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetSelectionFlags(int16_t *aOutEnable)
|
|
{
|
|
if (!aOutEnable)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*aOutEnable = mSelectionFlags;
|
|
return NS_OK;
|
|
}
|
|
|
|
//implementation of nsISelectionController
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterMove(bool aForward, bool aExtend)
|
|
{
|
|
return mSelection->CharacterMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForDelete()
|
|
{
|
|
return mSelection->CharacterExtendForDelete();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForBackspace()
|
|
{
|
|
return mSelection->CharacterExtendForBackspace();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordMove(bool aForward, bool aExtend)
|
|
{
|
|
nsresult result = mSelection->WordMove(aForward, aExtend);
|
|
// if we can't go down/up any more we must then move caret completely to
|
|
// end/beginning respectively.
|
|
if (NS_FAILED(result))
|
|
result = CompleteMove(aForward, aExtend);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordExtendForDelete(bool aForward)
|
|
{
|
|
return mSelection->WordExtendForDelete(aForward);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::LineMove(bool aForward, bool aExtend)
|
|
{
|
|
nsresult result = mSelection->LineMove(aForward, aExtend);
|
|
// if we can't go down/up any more we must then move caret completely to
|
|
// end/beginning respectively.
|
|
if (NS_FAILED(result))
|
|
result = CompleteMove(aForward,aExtend);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::IntraLineMove(bool aForward, bool aExtend)
|
|
{
|
|
return mSelection->IntraLineMove(aForward, aExtend);
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::PageMove(bool aForward, bool aExtend)
|
|
{
|
|
nsIScrollableFrame *scrollableFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (!scrollableFrame)
|
|
return NS_OK;
|
|
|
|
mSelection->CommonPageMove(aForward, aExtend, scrollableFrame);
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollPage(bool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::PAGES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollLine(bool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
int32_t lineCount = Preferences::GetInt("toolkit.scrollbox.verticalScrollDistance",
|
|
NS_DEFAULT_VERTICAL_SCROLL_DISTANCE);
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? lineCount : -lineCount),
|
|
nsIScrollableFrame::LINES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollCharacter(bool aRight)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eHorizontal);
|
|
if (scrollFrame) {
|
|
int32_t h = Preferences::GetInt("toolkit.scrollbox.horizontalScrollDistance",
|
|
NS_DEFAULT_HORIZONTAL_SCROLL_DISTANCE);
|
|
scrollFrame->ScrollBy(nsIntPoint(aRight ? h : -h, 0),
|
|
nsIScrollableFrame::LINES,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteScroll(bool aForward)
|
|
{
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetFrameToScrollAsScrollable(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::WHOLE,
|
|
nsIScrollableFrame::SMOOTH);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteMove(bool aForward, bool aExtend)
|
|
{
|
|
// Beware! This may flush notifications via synchronous
|
|
// ScrollSelectionIntoView.
|
|
nsIContent* limiter = mSelection->GetAncestorLimiter();
|
|
nsIFrame* frame = limiter ? limiter->GetPrimaryFrame()
|
|
: FrameConstructor()->GetRootElementFrame();
|
|
if (!frame)
|
|
return NS_ERROR_FAILURE;
|
|
nsIFrame::CaretPosition pos =
|
|
frame->GetExtremeCaretPosition(!aForward);
|
|
mSelection->HandleClick(pos.mResultContent, pos.mContentOffset,
|
|
pos.mContentOffset, aExtend, false, aForward);
|
|
if (limiter) {
|
|
// HandleClick resets ancestorLimiter, so set it again.
|
|
mSelection->SetAncestorLimiter(limiter);
|
|
}
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::SelectAll()
|
|
{
|
|
return mSelection->SelectAll();
|
|
}
|
|
|
|
static void
|
|
DoCheckVisibility(nsPresContext* aPresContext,
|
|
nsIContent* aNode,
|
|
int16_t aStartOffset,
|
|
int16_t aEndOffset,
|
|
bool* aRetval)
|
|
{
|
|
nsIFrame* frame = aNode->GetPrimaryFrame();
|
|
if (!frame) {
|
|
// No frame to look at so it must not be visible.
|
|
return;
|
|
}
|
|
|
|
// Start process now to go through all frames to find startOffset. Then check
|
|
// chars after that to see if anything until EndOffset is visible.
|
|
bool finished = false;
|
|
frame->CheckVisibility(aPresContext, aStartOffset, aEndOffset, true,
|
|
&finished, aRetval);
|
|
// Don't worry about other return value.
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CheckVisibility(nsIDOMNode *node, int16_t startOffset, int16_t EndOffset, bool *_retval)
|
|
{
|
|
if (!node || startOffset>EndOffset || !_retval || startOffset<0 || EndOffset<0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*_retval = false; //initialize return parameter
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (!content)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
DoCheckVisibility(mPresContext, content, startOffset, EndOffset, _retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CheckVisibilityContent(nsIContent* aNode, int16_t aStartOffset,
|
|
int16_t aEndOffset, bool* aRetval)
|
|
{
|
|
if (!aNode || aStartOffset > aEndOffset || !aRetval ||
|
|
aStartOffset < 0 || aEndOffset < 0) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
*aRetval = false;
|
|
DoCheckVisibility(mPresContext, aNode, aStartOffset, aEndOffset, aRetval);
|
|
return NS_OK;
|
|
}
|
|
|
|
//end implementations nsISelectionController
|
|
|
|
nsIFrame*
|
|
nsIPresShell::GetRootFrameExternal() const
|
|
{
|
|
return mFrameConstructor->GetRootFrame();
|
|
}
|
|
|
|
nsIFrame*
|
|
nsIPresShell::GetRootScrollFrame() const
|
|
{
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
// Ensure root frame is a viewport frame
|
|
if (!rootFrame || nsGkAtoms::viewportFrame != rootFrame->GetType())
|
|
return nullptr;
|
|
nsIFrame* theFrame = rootFrame->GetFirstPrincipalChild();
|
|
if (!theFrame || nsGkAtoms::scrollFrame != theFrame->GetType())
|
|
return nullptr;
|
|
return theFrame;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetRootScrollFrameAsScrollable() const
|
|
{
|
|
nsIFrame* frame = GetRootScrollFrame();
|
|
if (!frame)
|
|
return nullptr;
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(frame);
|
|
NS_ASSERTION(scrollableFrame,
|
|
"All scroll frames must implement nsIScrollableFrame");
|
|
return scrollableFrame;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetRootScrollFrameAsScrollableExternal() const
|
|
{
|
|
return GetRootScrollFrameAsScrollable();
|
|
}
|
|
|
|
nsIPageSequenceFrame*
|
|
PresShell::GetPageSequenceFrame() const
|
|
{
|
|
nsIFrame* frame = mFrameConstructor->GetPageSequenceFrame();
|
|
return do_QueryFrame(frame);
|
|
}
|
|
|
|
void
|
|
PresShell::BeginUpdate(nsIDocument *aDocument, nsUpdateType aUpdateType)
|
|
{
|
|
#ifdef DEBUG
|
|
mUpdateCount++;
|
|
#endif
|
|
mFrameConstructor->BeginUpdate();
|
|
|
|
if (aUpdateType & UPDATE_STYLE)
|
|
mStyleSet->BeginUpdate();
|
|
}
|
|
|
|
void
|
|
PresShell::EndUpdate(nsIDocument *aDocument, nsUpdateType aUpdateType)
|
|
{
|
|
#ifdef DEBUG
|
|
NS_PRECONDITION(0 != mUpdateCount, "too many EndUpdate's");
|
|
--mUpdateCount;
|
|
#endif
|
|
|
|
if (aUpdateType & UPDATE_STYLE) {
|
|
mStyleSet->EndUpdate();
|
|
if (mStylesHaveChanged || !mChangedScopeStyleRoots.IsEmpty())
|
|
ReconstructStyleData();
|
|
}
|
|
|
|
mFrameConstructor->EndUpdate();
|
|
}
|
|
|
|
void
|
|
PresShell::RestoreRootScrollPosition()
|
|
{
|
|
nsIScrollableFrame* scrollableFrame = GetRootScrollFrameAsScrollable();
|
|
if (scrollableFrame) {
|
|
scrollableFrame->ScrollToRestoredPosition();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::BeginLoad(nsIDocument *aDocument)
|
|
{
|
|
mDocumentLoading = true;
|
|
}
|
|
|
|
void
|
|
PresShell::EndLoad(nsIDocument *aDocument)
|
|
{
|
|
NS_PRECONDITION(aDocument == mDocument, "Wrong document");
|
|
|
|
RestoreRootScrollPosition();
|
|
|
|
mDocumentLoading = false;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::VerifyHasDirtyRootAncestor(nsIFrame* aFrame)
|
|
{
|
|
// XXXbz due to bug 372769, can't actually assert anything here...
|
|
return;
|
|
|
|
// XXXbz shouldn't need this part; remove it once FrameNeedsReflow
|
|
// handles the root frame correctly.
|
|
if (!aFrame->GetParent()) {
|
|
return;
|
|
}
|
|
|
|
// Make sure that there is a reflow root ancestor of |aFrame| that's
|
|
// in mDirtyRoots already.
|
|
while (aFrame && (aFrame->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN)) {
|
|
if (((aFrame->GetStateBits() & NS_FRAME_REFLOW_ROOT) ||
|
|
!aFrame->GetParent()) &&
|
|
mDirtyRoots.Contains(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
aFrame = aFrame->GetParent();
|
|
}
|
|
NS_NOTREACHED("Frame has dirty bits set but isn't scheduled to be "
|
|
"reflowed?");
|
|
}
|
|
#endif
|
|
|
|
void
|
|
PresShell::FrameNeedsReflow(nsIFrame *aFrame, IntrinsicDirty aIntrinsicDirty,
|
|
nsFrameState aBitToAdd)
|
|
{
|
|
NS_PRECONDITION(aBitToAdd == NS_FRAME_IS_DIRTY ||
|
|
aBitToAdd == NS_FRAME_HAS_DIRTY_CHILDREN,
|
|
"Unexpected bits being added");
|
|
NS_PRECONDITION(aIntrinsicDirty != eStyleChange ||
|
|
aBitToAdd == NS_FRAME_IS_DIRTY,
|
|
"bits don't correspond to style change reason");
|
|
|
|
NS_ASSERTION(!mIsReflowing, "can't mark frame dirty during reflow");
|
|
|
|
// If we've not yet done the initial reflow, then don't bother
|
|
// enqueuing a reflow command yet.
|
|
if (! mDidInitialize)
|
|
return;
|
|
|
|
// If we're already destroying, don't bother with this either.
|
|
if (mIsDestroying)
|
|
return;
|
|
|
|
#ifdef DEBUG
|
|
//printf("gShellCounter: %d\n", gShellCounter++);
|
|
if (mInVerifyReflow)
|
|
return;
|
|
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
printf("\nPresShell@%p: frame %p needs reflow\n", (void*)this, (void*)aFrame);
|
|
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
|
|
printf("Current content model:\n");
|
|
Element *rootElement = mDocument->GetRootElement();
|
|
if (rootElement) {
|
|
rootElement->List(stdout, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsAutoTArray<nsIFrame*, 4> subtrees;
|
|
subtrees.AppendElement(aFrame);
|
|
|
|
do {
|
|
nsIFrame *subtreeRoot = subtrees.ElementAt(subtrees.Length() - 1);
|
|
subtrees.RemoveElementAt(subtrees.Length() - 1);
|
|
|
|
// Grab |wasDirty| now so we can go ahead and update the bits on
|
|
// subtreeRoot.
|
|
bool wasDirty = NS_SUBTREE_DIRTY(subtreeRoot);
|
|
subtreeRoot->AddStateBits(aBitToAdd);
|
|
|
|
// Now if subtreeRoot is a reflow root we can cut off this reflow at it if
|
|
// the bit being added is NS_FRAME_HAS_DIRTY_CHILDREN.
|
|
bool targetFrameDirty = (aBitToAdd == NS_FRAME_IS_DIRTY);
|
|
|
|
#define FRAME_IS_REFLOW_ROOT(_f) \
|
|
((_f->GetStateBits() & NS_FRAME_REFLOW_ROOT) && \
|
|
(_f != subtreeRoot || !targetFrameDirty))
|
|
|
|
|
|
// Mark the intrinsic widths as dirty on the frame, all of its ancestors,
|
|
// and all of its descendants, if needed:
|
|
|
|
if (aIntrinsicDirty != eResize) {
|
|
// Mark argument and all ancestors dirty. (Unless we hit a reflow
|
|
// root that should contain the reflow. That root could be
|
|
// subtreeRoot itself if it's not dirty, or it could be some
|
|
// ancestor of subtreeRoot.)
|
|
for (nsIFrame *a = subtreeRoot;
|
|
a && !FRAME_IS_REFLOW_ROOT(a);
|
|
a = a->GetParent())
|
|
a->MarkIntrinsicWidthsDirty();
|
|
}
|
|
|
|
if (aIntrinsicDirty == eStyleChange) {
|
|
// Mark all descendants dirty (using an nsTArray stack rather than
|
|
// recursion).
|
|
// Note that nsHTMLReflowState::InitResizeFlags has some similar
|
|
// code; see comments there for how and why it differs.
|
|
nsAutoTArray<nsIFrame*, 32> stack;
|
|
stack.AppendElement(subtreeRoot);
|
|
|
|
do {
|
|
nsIFrame *f = stack.ElementAt(stack.Length() - 1);
|
|
stack.RemoveElementAt(stack.Length() - 1);
|
|
|
|
if (f->GetType() == nsGkAtoms::placeholderFrame) {
|
|
nsIFrame *oof = nsPlaceholderFrame::GetRealFrameForPlaceholder(f);
|
|
if (!nsLayoutUtils::IsProperAncestorFrame(subtreeRoot, oof)) {
|
|
// We have another distinct subtree we need to mark.
|
|
subtrees.AppendElement(oof);
|
|
}
|
|
}
|
|
|
|
nsIFrame::ChildListIterator lists(f);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* kid = childFrames.get();
|
|
kid->MarkIntrinsicWidthsDirty();
|
|
stack.AppendElement(kid);
|
|
}
|
|
}
|
|
} while (stack.Length() != 0);
|
|
}
|
|
|
|
// Set NS_FRAME_HAS_DIRTY_CHILDREN bits (via nsIFrame::ChildIsDirty)
|
|
// up the tree until we reach either a frame that's already dirty or
|
|
// a reflow root.
|
|
nsIFrame *f = subtreeRoot;
|
|
for (;;) {
|
|
if (FRAME_IS_REFLOW_ROOT(f) || !f->GetParent()) {
|
|
// we've hit a reflow root or the root frame
|
|
if (!wasDirty) {
|
|
mDirtyRoots.AppendElement(f);
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
VerifyHasDirtyRootAncestor(f);
|
|
}
|
|
#endif
|
|
|
|
break;
|
|
}
|
|
|
|
nsIFrame *child = f;
|
|
f = f->GetParent();
|
|
wasDirty = NS_SUBTREE_DIRTY(f);
|
|
f->ChildIsDirty(child);
|
|
NS_ASSERTION(f->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN,
|
|
"ChildIsDirty didn't do its job");
|
|
if (wasDirty) {
|
|
// This frame was already marked dirty.
|
|
#ifdef DEBUG
|
|
VerifyHasDirtyRootAncestor(f);
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
} while (subtrees.Length() != 0);
|
|
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
void
|
|
PresShell::FrameNeedsToContinueReflow(nsIFrame *aFrame)
|
|
{
|
|
NS_ASSERTION(mIsReflowing, "Must be in reflow when marking path dirty.");
|
|
NS_PRECONDITION(mCurrentReflowRoot, "Must have a current reflow root here");
|
|
NS_ASSERTION(aFrame == mCurrentReflowRoot ||
|
|
nsLayoutUtils::IsProperAncestorFrame(mCurrentReflowRoot, aFrame),
|
|
"Frame passed in is not the descendant of mCurrentReflowRoot");
|
|
NS_ASSERTION(aFrame->GetStateBits() & NS_FRAME_IN_REFLOW,
|
|
"Frame passed in not in reflow?");
|
|
|
|
mFramesToDirty.PutEntry(aFrame);
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
nsIPresShell::GetFrameToScrollAsScrollable(
|
|
nsIPresShell::ScrollDirection aDirection)
|
|
{
|
|
nsIScrollableFrame* scrollFrame = nullptr;
|
|
|
|
nsCOMPtr<nsIContent> focusedContent;
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && mDocument) {
|
|
nsCOMPtr<nsIDOMWindow> window = do_QueryInterface(mDocument->GetWindow());
|
|
|
|
nsCOMPtr<nsIDOMElement> focusedElement;
|
|
fm->GetFocusedElementForWindow(window, false, nullptr, getter_AddRefs(focusedElement));
|
|
focusedContent = do_QueryInterface(focusedElement);
|
|
}
|
|
if (!focusedContent && mSelection) {
|
|
nsISelection* domSelection = mSelection->
|
|
GetSelection(nsISelectionController::SELECTION_NORMAL);
|
|
if (domSelection) {
|
|
nsCOMPtr<nsIDOMNode> focusedNode;
|
|
domSelection->GetFocusNode(getter_AddRefs(focusedNode));
|
|
focusedContent = do_QueryInterface(focusedNode);
|
|
}
|
|
}
|
|
if (focusedContent) {
|
|
nsIFrame* startFrame = focusedContent->GetPrimaryFrame();
|
|
if (startFrame) {
|
|
scrollFrame = startFrame->GetScrollTargetFrame();
|
|
if (scrollFrame) {
|
|
startFrame = scrollFrame->GetScrolledFrame();
|
|
}
|
|
if (aDirection == nsIPresShell::eEither) {
|
|
scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrame(startFrame);
|
|
} else {
|
|
scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrameForDirection(startFrame,
|
|
aDirection == eVertical ? nsLayoutUtils::eVertical :
|
|
nsLayoutUtils::eHorizontal);
|
|
}
|
|
}
|
|
}
|
|
if (!scrollFrame) {
|
|
scrollFrame = GetRootScrollFrameAsScrollable();
|
|
}
|
|
return scrollFrame;
|
|
}
|
|
|
|
void
|
|
PresShell::CancelAllPendingReflows()
|
|
{
|
|
mDirtyRoots.Clear();
|
|
|
|
if (mReflowScheduled) {
|
|
GetPresContext()->RefreshDriver()->RemoveLayoutFlushObserver(this);
|
|
mReflowScheduled = false;
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RecreateFramesFor(nsIContent* aContent)
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, NS_ERROR_FAILURE);
|
|
if (!mDidInitialize) {
|
|
// Nothing to do here. In fact, if we proceed and aContent is the
|
|
// root we will crash.
|
|
return NS_OK;
|
|
}
|
|
|
|
// Don't call RecreateFramesForContent since that is not exported and we want
|
|
// to keep the number of entrypoints down.
|
|
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
nsStyleChangeList changeList;
|
|
changeList.AppendChange(nullptr, aContent, nsChangeHint_ReconstructFrame);
|
|
|
|
// Mark ourselves as not safe to flush while we're doing frame construction.
|
|
++mChangeNestCount;
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
nsresult rv = restyleManager->ProcessRestyledFrames(changeList);
|
|
restyleManager->FlushOverflowChangedTracker();
|
|
--mChangeNestCount;
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::PostRecreateFramesFor(Element* aElement)
|
|
{
|
|
mPresContext->RestyleManager()->PostRestyleEvent(aElement, nsRestyleHint(0),
|
|
nsChangeHint_ReconstructFrame);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RestyleForAnimation(Element* aElement, nsRestyleHint aHint)
|
|
{
|
|
mPresContext->RestyleManager()->PostAnimationRestyleEvent(aElement, aHint,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
|
|
void
|
|
PresShell::ClearFrameRefs(nsIFrame* aFrame)
|
|
{
|
|
mPresContext->EventStateManager()->ClearFrameRefs(aFrame);
|
|
|
|
nsWeakFrame* weakFrame = mWeakFrames;
|
|
while (weakFrame) {
|
|
nsWeakFrame* prev = weakFrame->GetPreviousWeakFrame();
|
|
if (weakFrame->GetFrame() == aFrame) {
|
|
// This removes weakFrame from mWeakFrames.
|
|
weakFrame->Clear(this);
|
|
}
|
|
weakFrame = prev;
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsRenderingContext>
|
|
PresShell::GetReferenceRenderingContext()
|
|
{
|
|
nsDeviceContext* devCtx = mPresContext->DeviceContext();
|
|
nsRefPtr<nsRenderingContext> rc;
|
|
if (mPresContext->IsScreen()) {
|
|
rc = new nsRenderingContext();
|
|
rc->Init(devCtx, gfxPlatform::GetPlatform()->ScreenReferenceSurface());
|
|
} else {
|
|
devCtx->CreateRenderingContext(*getter_AddRefs(rc));
|
|
}
|
|
return rc.forget();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::GoToAnchor(const nsAString& aAnchorName, bool aScroll)
|
|
{
|
|
if (!mDocument) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
const Element *root = mDocument->GetRootElement();
|
|
if (root && root->IsSVG(nsGkAtoms::svg)) {
|
|
// We need to execute this even if there is an empty anchor name
|
|
// so that any existing SVG fragment identifier effect is removed
|
|
if (SVGFragmentIdentifier::ProcessFragmentIdentifier(mDocument, aAnchorName)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Hold a reference to the ESM in case event dispatch tears us down.
|
|
nsRefPtr<nsEventStateManager> esm = mPresContext->EventStateManager();
|
|
|
|
if (aAnchorName.IsEmpty()) {
|
|
NS_ASSERTION(!aScroll, "can't scroll to empty anchor name");
|
|
esm->SetContentState(nullptr, NS_EVENT_STATE_URLTARGET);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
|
|
nsresult rv = NS_OK;
|
|
nsCOMPtr<nsIContent> content;
|
|
|
|
// Search for an element with a matching "id" attribute
|
|
if (mDocument) {
|
|
content = mDocument->GetElementById(aAnchorName);
|
|
}
|
|
|
|
// Search for an anchor element with a matching "name" attribute
|
|
if (!content && htmlDoc) {
|
|
nsCOMPtr<nsIDOMNodeList> list;
|
|
// Find a matching list of named nodes
|
|
rv = htmlDoc->GetElementsByName(aAnchorName, getter_AddRefs(list));
|
|
if (NS_SUCCEEDED(rv) && list) {
|
|
uint32_t i;
|
|
// Loop through the named nodes looking for the first anchor
|
|
for (i = 0; true; i++) {
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = list->Item(i, getter_AddRefs(node));
|
|
if (!node) { // End of list
|
|
break;
|
|
}
|
|
// Ensure it's an anchor element
|
|
content = do_QueryInterface(node);
|
|
if (content) {
|
|
if (content->Tag() == nsGkAtoms::a && content->IsHTML()) {
|
|
break;
|
|
}
|
|
content = nullptr;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Search for anchor in the HTML namespace with a matching name
|
|
if (!content && !htmlDoc)
|
|
{
|
|
nsCOMPtr<nsIDOMDocument> doc = do_QueryInterface(mDocument);
|
|
nsCOMPtr<nsIDOMNodeList> list;
|
|
NS_NAMED_LITERAL_STRING(nameSpace, "http://www.w3.org/1999/xhtml");
|
|
// Get the list of anchor elements
|
|
rv = doc->GetElementsByTagNameNS(nameSpace, NS_LITERAL_STRING("a"), getter_AddRefs(list));
|
|
if (NS_SUCCEEDED(rv) && list) {
|
|
uint32_t i;
|
|
// Loop through the named nodes looking for the first anchor
|
|
for (i = 0; true; i++) {
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = list->Item(i, getter_AddRefs(node));
|
|
if (!node) { // End of list
|
|
break;
|
|
}
|
|
// Compare the name attribute
|
|
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(node);
|
|
nsAutoString value;
|
|
if (element && NS_SUCCEEDED(element->GetAttribute(NS_LITERAL_STRING("name"), value))) {
|
|
if (value.Equals(aAnchorName)) {
|
|
content = do_QueryInterface(element);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
esm->SetContentState(content, NS_EVENT_STATE_URLTARGET);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsIContent *anchorTarget = content;
|
|
#endif
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (rootScroll && rootScroll->DidHistoryRestore()) {
|
|
// Scroll position restored from history trumps scrolling to anchor.
|
|
aScroll = false;
|
|
rootScroll->ClearDidHistoryRestore();
|
|
}
|
|
|
|
if (content) {
|
|
if (aScroll) {
|
|
rv = ScrollContentIntoView(content,
|
|
ScrollAxis(SCROLL_TOP, SCROLL_ALWAYS),
|
|
ScrollAxis(),
|
|
ANCHOR_SCROLL_FLAGS);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (rootScroll) {
|
|
mLastAnchorScrolledTo = content;
|
|
mLastAnchorScrollPositionY = rootScroll->GetScrollPosition().y;
|
|
}
|
|
}
|
|
|
|
// Should we select the target? This action is controlled by a
|
|
// preference: the default is to not select.
|
|
bool selectAnchor = Preferences::GetBool("layout.selectanchor");
|
|
|
|
// Even if select anchor pref is false, we must still move the
|
|
// caret there. That way tabbing will start from the new
|
|
// location
|
|
nsRefPtr<nsIDOMRange> jumpToRange = new nsRange(mDocument);
|
|
while (content && content->GetFirstChild()) {
|
|
content = content->GetFirstChild();
|
|
}
|
|
nsCOMPtr<nsIDOMNode> node(do_QueryInterface(content));
|
|
NS_ASSERTION(node, "No nsIDOMNode for descendant of anchor");
|
|
jumpToRange->SelectNodeContents(node);
|
|
// Select the anchor
|
|
nsISelection* sel = mSelection->
|
|
GetSelection(nsISelectionController::SELECTION_NORMAL);
|
|
if (sel) {
|
|
sel->RemoveAllRanges();
|
|
sel->AddRange(jumpToRange);
|
|
if (!selectAnchor) {
|
|
// Use a caret (collapsed selection) at the start of the anchor
|
|
sel->CollapseToStart();
|
|
}
|
|
}
|
|
// Selection is at anchor.
|
|
// Now focus the document itself if focus is on an element within it.
|
|
nsPIDOMWindow *win = mDocument->GetWindow();
|
|
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && win) {
|
|
nsCOMPtr<nsIDOMWindow> focusedWindow;
|
|
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
|
|
if (SameCOMIdentity(win, focusedWindow)) {
|
|
fm->ClearFocus(focusedWindow);
|
|
}
|
|
}
|
|
|
|
// If the target is an animation element, activate the animation
|
|
if (content->IsNodeOfType(nsINode::eANIMATION)) {
|
|
SVGContentUtils::ActivateByHyperlink(content.get());
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_FAILURE;
|
|
NS_NAMED_LITERAL_STRING(top, "top");
|
|
if (nsContentUtils::EqualsIgnoreASCIICase(aAnchorName, top)) {
|
|
// Scroll to the top/left if aAnchorName is "top" and there is no element
|
|
// with such a name or id.
|
|
rv = NS_OK;
|
|
nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable();
|
|
// Check |aScroll| after setting |rv| so we set |rv| to the same
|
|
// thing whether or not |aScroll| is true.
|
|
if (aScroll && sf) {
|
|
// Scroll to the top of the page
|
|
sf->ScrollTo(nsPoint(0, 0), nsIScrollableFrame::INSTANT);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (anchorTarget) {
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService)
|
|
accService->NotifyOfAnchorJumpTo(anchorTarget);
|
|
}
|
|
#endif
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ScrollToAnchor()
|
|
{
|
|
if (!mLastAnchorScrolledTo) {
|
|
return NS_OK;
|
|
}
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (!rootScroll ||
|
|
mLastAnchorScrollPositionY != rootScroll->GetScrollPosition().y) {
|
|
return NS_OK;
|
|
}
|
|
nsresult rv = ScrollContentIntoView(mLastAnchorScrolledTo,
|
|
ScrollAxis(SCROLL_TOP, SCROLL_ALWAYS),
|
|
ScrollAxis(),
|
|
ANCHOR_SCROLL_FLAGS);
|
|
mLastAnchorScrolledTo = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Helper (per-continuation) for ScrollContentIntoView.
|
|
*
|
|
* @param aContainerFrame [in] the frame which aRect is relative to
|
|
* @param aFrame [in] Frame whose bounds should be unioned
|
|
* @param aUseWholeLineHeightForInlines [in] if true, then for inline frames
|
|
* we should include the top of the line in the added rectangle
|
|
* @param aRect [inout] rect into which its bounds should be unioned
|
|
* @param aHaveRect [inout] whether aRect contains data yet
|
|
* @param aPrevBlock [inout] the block aLines is a line iterator for
|
|
* @param aLines [inout] the line iterator we're using
|
|
* @param aCurLine [inout] the line to start looking from in this iterator
|
|
*/
|
|
static void
|
|
AccumulateFrameBounds(nsIFrame* aContainerFrame,
|
|
nsIFrame* aFrame,
|
|
bool aUseWholeLineHeightForInlines,
|
|
nsRect& aRect,
|
|
bool& aHaveRect,
|
|
nsIFrame*& aPrevBlock,
|
|
nsAutoLineIterator& aLines,
|
|
int32_t& aCurLine)
|
|
{
|
|
nsIFrame* frame = aFrame;
|
|
nsRect frameBounds = nsRect(nsPoint(0, 0), aFrame->GetSize());
|
|
|
|
// If this is an inline frame and either the bounds height is 0 (quirks
|
|
// layout model) or aUseWholeLineHeightForInlines is set, we need to
|
|
// change the top of the bounds to include the whole line.
|
|
if (frameBounds.height == 0 || aUseWholeLineHeightForInlines) {
|
|
nsIFrame *prevFrame = aFrame;
|
|
nsIFrame *f = aFrame;
|
|
|
|
while (f && f->IsFrameOfType(nsIFrame::eLineParticipant) &&
|
|
!f->IsTransformed() && !f->IsPositioned()) {
|
|
prevFrame = f;
|
|
f = prevFrame->GetParent();
|
|
}
|
|
|
|
if (f != aFrame &&
|
|
f &&
|
|
f->GetType() == nsGkAtoms::blockFrame) {
|
|
// find the line containing aFrame and increase the top of |offset|.
|
|
if (f != aPrevBlock) {
|
|
aLines = f->GetLineIterator();
|
|
aPrevBlock = f;
|
|
aCurLine = 0;
|
|
}
|
|
if (aLines) {
|
|
int32_t index = aLines->FindLineContaining(prevFrame, aCurLine);
|
|
if (index >= 0) {
|
|
aCurLine = index;
|
|
nsIFrame *trash1;
|
|
int32_t trash2;
|
|
nsRect lineBounds;
|
|
uint32_t trash3;
|
|
|
|
if (NS_SUCCEEDED(aLines->GetLine(index, &trash1, &trash2,
|
|
lineBounds, &trash3))) {
|
|
frameBounds += frame->GetOffsetTo(f);
|
|
frame = f;
|
|
if (lineBounds.y < frameBounds.y) {
|
|
frameBounds.height = frameBounds.YMost() - lineBounds.y;
|
|
frameBounds.y = lineBounds.y;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRect transformedBounds = nsLayoutUtils::TransformFrameRectToAncestor(frame,
|
|
frameBounds, aContainerFrame);
|
|
|
|
if (aHaveRect) {
|
|
// We can't use nsRect::UnionRect since it drops empty rects on
|
|
// the floor, and we need to include them. (Thus we need
|
|
// aHaveRect to know when to drop the initial value on the floor.)
|
|
aRect.UnionRectEdges(aRect, transformedBounds);
|
|
} else {
|
|
aHaveRect = true;
|
|
aRect = transformedBounds;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
ComputeNeedToScroll(nsIPresShell::WhenToScroll aWhenToScroll,
|
|
nscoord aLineSize,
|
|
nscoord aRectMin,
|
|
nscoord aRectMax,
|
|
nscoord aViewMin,
|
|
nscoord aViewMax) {
|
|
// See how the rect should be positioned vertically
|
|
if (nsIPresShell::SCROLL_ALWAYS == aWhenToScroll) {
|
|
// The caller wants the frame as visible as possible
|
|
return true;
|
|
} else if (nsIPresShell::SCROLL_IF_NOT_VISIBLE == aWhenToScroll) {
|
|
// Scroll only if no part of the frame is visible in this view
|
|
return aRectMax - aLineSize <= aViewMin ||
|
|
aRectMin + aLineSize >= aViewMax;
|
|
} else if (nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE == aWhenToScroll) {
|
|
// Scroll only if part of the frame is hidden and more can fit in view
|
|
return !(aRectMin >= aViewMin && aRectMax <= aViewMax) &&
|
|
std::min(aViewMax, aRectMax) - std::max(aRectMin, aViewMin) < aViewMax - aViewMin;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static nscoord
|
|
ComputeWhereToScroll(int16_t aWhereToScroll,
|
|
nscoord aOriginalCoord,
|
|
nscoord aRectMin,
|
|
nscoord aRectMax,
|
|
nscoord aViewMin,
|
|
nscoord aViewMax,
|
|
nscoord* aRangeMin,
|
|
nscoord* aRangeMax) {
|
|
nscoord resultCoord = aOriginalCoord;
|
|
// Allow the scroll operation to land anywhere that
|
|
// makes the whole rectangle visible.
|
|
if (nsIPresShell::SCROLL_MINIMUM == aWhereToScroll) {
|
|
if (aRectMin < aViewMin) {
|
|
// Scroll up so the frame's top edge is visible
|
|
resultCoord = aRectMin;
|
|
} else if (aRectMax > aViewMax) {
|
|
// Scroll down so the frame's bottom edge is visible. Make sure the
|
|
// frame's top edge is still visible
|
|
resultCoord = aOriginalCoord + aRectMax - aViewMax;
|
|
if (resultCoord > aRectMin) {
|
|
resultCoord = aRectMin;
|
|
}
|
|
}
|
|
} else {
|
|
nscoord frameAlignCoord =
|
|
NSToCoordRound(aRectMin + (aRectMax - aRectMin) * (aWhereToScroll / 100.0f));
|
|
resultCoord = NSToCoordRound(frameAlignCoord - (aViewMax - aViewMin) * (
|
|
aWhereToScroll / 100.0f));
|
|
}
|
|
nscoord scrollPortLength = aViewMax - aViewMin;
|
|
// Force the scroll range to extend to include resultCoord.
|
|
*aRangeMin = std::min(resultCoord, aRectMax - scrollPortLength);
|
|
*aRangeMax = std::max(resultCoord, aRectMin);
|
|
return resultCoord;
|
|
}
|
|
|
|
/**
|
|
* This function takes a scrollable frame, a rect in the coordinate system
|
|
* of the scrolled frame, and a desired percentage-based scroll
|
|
* position and attempts to scroll the rect to that position in the
|
|
* scrollport.
|
|
*
|
|
* This needs to work even if aRect has a width or height of zero.
|
|
*/
|
|
static void ScrollToShowRect(nsIFrame* aFrame,
|
|
nsIScrollableFrame* aFrameAsScrollable,
|
|
const nsRect& aRect,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags)
|
|
{
|
|
nsPoint scrollPt = aFrameAsScrollable->GetScrollPosition();
|
|
nsRect visibleRect(scrollPt,
|
|
aFrameAsScrollable->GetScrollPositionClampingScrollPortSize());
|
|
|
|
// If this is the root scroll frame, make sure to take into account the
|
|
// content document fixed position margins. When set, these indicate that
|
|
// chrome is obscuring the viewport.
|
|
nsRect targetRect(aRect);
|
|
nsIPresShell *presShell = aFrame->PresContext()->PresShell();
|
|
if (aFrameAsScrollable == presShell->GetRootScrollFrameAsScrollable()) {
|
|
targetRect.Inflate(presShell->GetContentDocumentFixedPositionMargins());
|
|
}
|
|
|
|
nsSize lineSize;
|
|
// Don't call GetLineScrollAmount unless we actually need it. Not only
|
|
// does this save time, but it's not safe to call GetLineScrollAmount
|
|
// during reflow (because it depends on font size inflation and doesn't
|
|
// use the in-reflow-safe font-size inflation path). If we did call it,
|
|
// it would assert and possible give the wrong result.
|
|
if (aVertical.mWhenToScroll == nsIPresShell::SCROLL_IF_NOT_VISIBLE ||
|
|
aHorizontal.mWhenToScroll == nsIPresShell::SCROLL_IF_NOT_VISIBLE) {
|
|
lineSize = aFrameAsScrollable->GetLineScrollAmount();
|
|
}
|
|
ScrollbarStyles ss = aFrameAsScrollable->GetScrollbarStyles();
|
|
nsRect allowedRange(scrollPt, nsSize(0, 0));
|
|
bool needToScroll = false;
|
|
uint32_t directions = aFrameAsScrollable->GetPerceivedScrollingDirections();
|
|
|
|
if (((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mVertical != NS_STYLE_OVERFLOW_HIDDEN) &&
|
|
(!aVertical.mOnlyIfPerceivedScrollableDirection ||
|
|
(directions & nsIScrollableFrame::VERTICAL))) {
|
|
|
|
if (ComputeNeedToScroll(aVertical.mWhenToScroll,
|
|
lineSize.height,
|
|
targetRect.y,
|
|
targetRect.YMost(),
|
|
visibleRect.y,
|
|
visibleRect.YMost())) {
|
|
nscoord maxHeight;
|
|
scrollPt.y = ComputeWhereToScroll(aVertical.mWhereToScroll,
|
|
scrollPt.y,
|
|
targetRect.y,
|
|
targetRect.YMost(),
|
|
visibleRect.y,
|
|
visibleRect.YMost(),
|
|
&allowedRange.y, &maxHeight);
|
|
allowedRange.height = maxHeight - allowedRange.y;
|
|
needToScroll = true;
|
|
}
|
|
}
|
|
|
|
if (((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mHorizontal != NS_STYLE_OVERFLOW_HIDDEN) &&
|
|
(!aHorizontal.mOnlyIfPerceivedScrollableDirection ||
|
|
(directions & nsIScrollableFrame::HORIZONTAL))) {
|
|
|
|
if (ComputeNeedToScroll(aHorizontal.mWhenToScroll,
|
|
lineSize.width,
|
|
targetRect.x,
|
|
targetRect.XMost(),
|
|
visibleRect.x,
|
|
visibleRect.XMost())) {
|
|
nscoord maxWidth;
|
|
scrollPt.x = ComputeWhereToScroll(aHorizontal.mWhereToScroll,
|
|
scrollPt.x,
|
|
targetRect.x,
|
|
targetRect.XMost(),
|
|
visibleRect.x,
|
|
visibleRect.XMost(),
|
|
&allowedRange.x, &maxWidth);
|
|
allowedRange.width = maxWidth - allowedRange.x;
|
|
needToScroll = true;
|
|
}
|
|
}
|
|
|
|
// If we don't need to scroll, then don't try since it might cancel
|
|
// a current smooth scroll operation.
|
|
if (needToScroll) {
|
|
aFrameAsScrollable->ScrollTo(scrollPt, nsIScrollableFrame::INSTANT, &allowedRange);
|
|
}
|
|
}
|
|
|
|
static void
|
|
DeleteScrollIntoViewData(void* aObject, nsIAtom* aPropertyName,
|
|
void* aPropertyValue, void* aData)
|
|
{
|
|
PresShell::ScrollIntoViewData* data =
|
|
static_cast<PresShell::ScrollIntoViewData*>(aPropertyValue);
|
|
delete data;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ScrollContentIntoView(nsIContent* aContent,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags)
|
|
{
|
|
NS_ENSURE_TRUE(aContent, NS_ERROR_NULL_POINTER);
|
|
nsCOMPtr<nsIDocument> currentDoc = aContent->GetCurrentDoc();
|
|
NS_ENSURE_STATE(currentDoc);
|
|
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
}
|
|
mContentToScrollTo = aContent;
|
|
ScrollIntoViewData* data = new ScrollIntoViewData();
|
|
data->mContentScrollVAxis = aVertical;
|
|
data->mContentScrollHAxis = aHorizontal;
|
|
data->mContentToScrollToFlags = aFlags;
|
|
if (NS_FAILED(mContentToScrollTo->SetProperty(nsGkAtoms::scrolling, data,
|
|
::DeleteScrollIntoViewData))) {
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
|
|
// Flush layout and attempt to scroll in the process.
|
|
currentDoc->SetNeedLayoutFlush();
|
|
currentDoc->FlushPendingNotifications(Flush_InterruptibleLayout);
|
|
|
|
// If mContentToScrollTo is non-null, that means we interrupted the reflow
|
|
// (or suppressed it altogether because we're suppressing interruptible
|
|
// flushes right now) and won't necessarily get the position correct, but do
|
|
// a best-effort scroll here. The other option would be to do this inside
|
|
// FlushPendingNotifications, but I'm not sure the repeated scrolling that
|
|
// could trigger if reflows keep getting interrupted would be more desirable
|
|
// than a single best-effort scroll followed by one final scroll on the first
|
|
// completed reflow.
|
|
if (mContentToScrollTo) {
|
|
DoScrollContentIntoView();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::DoScrollContentIntoView()
|
|
{
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
nsIFrame* frame = mContentToScrollTo->GetPrimaryFrame();
|
|
if (!frame) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
return;
|
|
}
|
|
|
|
if (frame->GetStateBits() & NS_FRAME_FIRST_REFLOW) {
|
|
// The reflow flush before this scroll got interrupted, and this frame's
|
|
// coords and size are all zero, and it has no content showing anyway.
|
|
// Don't bother scrolling to it. We'll try again when we finish up layout.
|
|
return;
|
|
}
|
|
|
|
// Make sure we skip 'frame' ... if it's scrollable, we should use its
|
|
// scrollable ancestor as the container.
|
|
nsIFrame* container =
|
|
nsLayoutUtils::GetClosestFrameOfType(frame->GetParent(), nsGkAtoms::scrollFrame);
|
|
if (!container) {
|
|
// nothing can be scrolled
|
|
return;
|
|
}
|
|
|
|
ScrollIntoViewData* data = static_cast<ScrollIntoViewData*>(
|
|
mContentToScrollTo->GetProperty(nsGkAtoms::scrolling));
|
|
if (MOZ_UNLIKELY(!data)) {
|
|
mContentToScrollTo = nullptr;
|
|
return;
|
|
}
|
|
|
|
// This is a two-step process.
|
|
// Step 1: Find the bounds of the rect we want to scroll into view. For
|
|
// example, for an inline frame we may want to scroll in the whole
|
|
// line, or we may want to scroll multiple lines into view.
|
|
// Step 2: Walk container frame and its ancestors and scroll them
|
|
// appropriately.
|
|
// frameBounds is relative to container. We're assuming
|
|
// that scrollframes don't split so every continuation of frame will
|
|
// be a descendant of container. (Things would still mostly work
|
|
// even if that assumption was false.)
|
|
nsRect frameBounds;
|
|
bool haveRect = false;
|
|
bool useWholeLineHeightForInlines =
|
|
data->mContentScrollVAxis.mWhenToScroll != nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE;
|
|
// Reuse the same line iterator across calls to AccumulateFrameBounds. We set
|
|
// it every time we detect a new block (stored in prevBlock).
|
|
nsIFrame* prevBlock = nullptr;
|
|
nsAutoLineIterator lines;
|
|
// The last line we found a continuation on in |lines|. We assume that later
|
|
// continuations cannot come on earlier lines.
|
|
int32_t curLine = 0;
|
|
do {
|
|
AccumulateFrameBounds(container, frame, useWholeLineHeightForInlines,
|
|
frameBounds, haveRect, prevBlock, lines, curLine);
|
|
} while ((frame = frame->GetNextContinuation()));
|
|
|
|
ScrollFrameRectIntoView(container, frameBounds, data->mContentScrollVAxis,
|
|
data->mContentScrollHAxis,
|
|
data->mContentToScrollToFlags);
|
|
}
|
|
|
|
bool
|
|
PresShell::ScrollFrameRectIntoView(nsIFrame* aFrame,
|
|
const nsRect& aRect,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags)
|
|
{
|
|
bool didScroll = false;
|
|
// This function needs to work even if rect has a width or height of 0.
|
|
nsRect rect = aRect;
|
|
nsIFrame* container = aFrame;
|
|
// Walk up the frame hierarchy scrolling the rect into view and
|
|
// keeping rect relative to container
|
|
do {
|
|
nsIScrollableFrame* sf = do_QueryFrame(container);
|
|
if (sf) {
|
|
nsPoint oldPosition = sf->GetScrollPosition();
|
|
ScrollToShowRect(container, sf, rect - sf->GetScrolledFrame()->GetPosition(),
|
|
aVertical, aHorizontal, aFlags);
|
|
nsPoint newPosition = sf->GetScrollPosition();
|
|
// If the scroll position increased, that means our content moved up,
|
|
// so our rect's offset should decrease
|
|
rect += oldPosition - newPosition;
|
|
|
|
if (oldPosition != newPosition) {
|
|
didScroll = true;
|
|
}
|
|
|
|
// only scroll one container when this flag is set
|
|
if (aFlags & nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY) {
|
|
break;
|
|
}
|
|
}
|
|
nsIFrame* parent;
|
|
if (container->IsTransformed()) {
|
|
container->GetTransformMatrix(nullptr, &parent);
|
|
rect = nsLayoutUtils::TransformFrameRectToAncestor(container, rect, parent);
|
|
} else {
|
|
rect += container->GetPosition();
|
|
parent = container->GetParent();
|
|
}
|
|
if (!parent && !(aFlags & nsIPresShell::SCROLL_NO_PARENT_FRAMES)) {
|
|
nsPoint extraOffset(0,0);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(container, &extraOffset);
|
|
if (parent) {
|
|
int32_t APD = container->PresContext()->AppUnitsPerDevPixel();
|
|
int32_t parentAPD = parent->PresContext()->AppUnitsPerDevPixel();
|
|
rect = rect.ConvertAppUnitsRoundOut(APD, parentAPD);
|
|
rect += extraOffset;
|
|
}
|
|
}
|
|
container = parent;
|
|
} while (container);
|
|
|
|
return didScroll;
|
|
}
|
|
|
|
nsRectVisibility
|
|
PresShell::GetRectVisibility(nsIFrame* aFrame,
|
|
const nsRect &aRect,
|
|
nscoord aMinTwips) const
|
|
{
|
|
NS_ASSERTION(aFrame->PresContext() == GetPresContext(),
|
|
"prescontext mismatch?");
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
NS_ASSERTION(rootFrame,
|
|
"How can someone have a frame for this presshell when there's no root?");
|
|
nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable();
|
|
nsRect scrollPortRect;
|
|
if (sf) {
|
|
scrollPortRect = sf->GetScrollPortRect();
|
|
nsIFrame* f = do_QueryFrame(sf);
|
|
scrollPortRect += f->GetOffsetTo(rootFrame);
|
|
} else {
|
|
scrollPortRect = nsRect(nsPoint(0,0), rootFrame->GetSize());
|
|
}
|
|
|
|
nsRect r = aRect + aFrame->GetOffsetTo(rootFrame);
|
|
// If aRect is entirely visible then we don't need to ensure that
|
|
// at least aMinTwips of it is visible
|
|
if (scrollPortRect.Contains(r))
|
|
return nsRectVisibility_kVisible;
|
|
|
|
nsRect insetRect = scrollPortRect;
|
|
insetRect.Deflate(aMinTwips, aMinTwips);
|
|
if (r.YMost() <= insetRect.y)
|
|
return nsRectVisibility_kAboveViewport;
|
|
if (r.y >= insetRect.YMost())
|
|
return nsRectVisibility_kBelowViewport;
|
|
if (r.XMost() <= insetRect.x)
|
|
return nsRectVisibility_kLeftOfViewport;
|
|
if (r.x >= insetRect.XMost())
|
|
return nsRectVisibility_kRightOfViewport;
|
|
|
|
return nsRectVisibility_kVisible;
|
|
}
|
|
|
|
void
|
|
PresShell::ScheduleViewManagerFlush()
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext) {
|
|
presContext->RefreshDriver()->ScheduleViewManagerFlush();
|
|
}
|
|
if (mDocument) {
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::DispatchSynthMouseMove(WidgetGUIEvent* aEvent,
|
|
bool aFlushOnHoverChange)
|
|
{
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
uint32_t hoverGenerationBefore = restyleManager->GetHoverGeneration();
|
|
nsEventStatus status;
|
|
nsView* targetView = nsView::GetViewFor(aEvent->widget);
|
|
if (!targetView)
|
|
return;
|
|
targetView->GetViewManager()->DispatchEvent(aEvent, targetView, &status);
|
|
if (aFlushOnHoverChange &&
|
|
hoverGenerationBefore != restyleManager->GetHoverGeneration()) {
|
|
// Flush so that the resulting reflow happens now so that our caller
|
|
// can suppress any synthesized mouse moves caused by that reflow.
|
|
FlushPendingNotifications(Flush_Layout);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::ClearMouseCaptureOnView(nsView* aView)
|
|
{
|
|
if (gCaptureInfo.mContent) {
|
|
if (aView) {
|
|
// if a view was specified, ensure that the captured content is within
|
|
// this view.
|
|
nsIFrame* frame = gCaptureInfo.mContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
nsView* view = frame->GetClosestView();
|
|
// if there is no view, capturing won't be handled any more, so
|
|
// just release the capture.
|
|
if (view) {
|
|
do {
|
|
if (view == aView) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
// the view containing the captured content likely disappeared so
|
|
// disable capture for now.
|
|
gCaptureInfo.mAllowed = false;
|
|
break;
|
|
}
|
|
|
|
view = view->GetParent();
|
|
} while (view);
|
|
// return if the view wasn't found
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
}
|
|
|
|
// disable mouse capture until the next mousedown as a dialog has opened
|
|
// or a drag has started. Otherwise, someone could start capture during
|
|
// the modal dialog or drag.
|
|
gCaptureInfo.mAllowed = false;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ClearMouseCapture(nsIFrame* aFrame)
|
|
{
|
|
if (!gCaptureInfo.mContent) {
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
// null frame argument means clear the capture
|
|
if (!aFrame) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
nsIFrame* capturingFrame = gCaptureInfo.mContent->GetPrimaryFrame();
|
|
if (!capturingFrame) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
if (nsLayoutUtils::IsAncestorFrameCrossDoc(aFrame, capturingFrame)) {
|
|
NS_RELEASE(gCaptureInfo.mContent);
|
|
gCaptureInfo.mAllowed = false;
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
PresShell::CaptureHistoryState(nsILayoutHistoryState** aState)
|
|
{
|
|
NS_PRECONDITION(nullptr != aState, "null state pointer");
|
|
|
|
// We actually have to mess with the docshell here, since we want to
|
|
// store the state back in it.
|
|
// XXXbz this isn't really right, since this is being called in the
|
|
// content viewer's Hide() method... by that point the docshell's
|
|
// state could be wrong. We should sort out a better ownership
|
|
// model for the layout history state.
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (!container)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(container));
|
|
if (!docShell)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsILayoutHistoryState> historyState;
|
|
docShell->GetLayoutHistoryState(getter_AddRefs(historyState));
|
|
if (!historyState) {
|
|
// Create the document state object
|
|
historyState = NS_NewLayoutHistoryState();
|
|
docShell->SetLayoutHistoryState(historyState);
|
|
}
|
|
|
|
*aState = historyState;
|
|
NS_IF_ADDREF(*aState);
|
|
|
|
// Capture frame state for the entire frame hierarchy
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) return NS_OK;
|
|
|
|
mFrameConstructor->CaptureFrameState(rootFrame, historyState);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::UnsuppressAndInvalidate()
|
|
{
|
|
// Note: We ignore the EnsureVisible check for resource documents, because
|
|
// they won't have a docshell, so they'll always fail EnsureVisible.
|
|
if ((!mDocument->IsResourceDoc() && !mPresContext->EnsureVisible()) ||
|
|
mHaveShutDown) {
|
|
// No point; we're about to be torn down anyway.
|
|
return;
|
|
}
|
|
|
|
if (!mDocument->IsResourceDoc()) {
|
|
// Notify observers that a new page is about to be drawn. Execute this
|
|
// as soon as it is safe to run JS, which is guaranteed to be before we
|
|
// go back to the event loop and actually draw the page.
|
|
nsContentUtils::AddScriptRunner(new nsBeforeFirstPaintDispatcher(mDocument));
|
|
}
|
|
|
|
mPaintingSuppressed = false;
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
// let's assume that outline on a root frame is not supported
|
|
rootFrame->InvalidateFrame();
|
|
|
|
if (mCaretEnabled && mCaret) {
|
|
mCaret->CheckCaretDrawingState();
|
|
}
|
|
}
|
|
|
|
// now that painting is unsuppressed, focus may be set on the document
|
|
nsPIDOMWindow *win = mDocument->GetWindow();
|
|
if (win)
|
|
win->SetReadyForFocus();
|
|
|
|
if (!mHaveShutDown) {
|
|
SynthesizeMouseMove(false);
|
|
ScheduleImageVisibilityUpdate();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::UnsuppressPainting()
|
|
{
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nullptr;
|
|
}
|
|
|
|
if (mIsDocumentGone || !mPaintingSuppressed)
|
|
return;
|
|
|
|
// If we have reflows pending, just wait until we process
|
|
// the reflows and get all the frames where we want them
|
|
// before actually unlocking the painting. Otherwise
|
|
// go ahead and unlock now.
|
|
if (!mDirtyRoots.IsEmpty())
|
|
mShouldUnsuppressPainting = true;
|
|
else
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
// Post a request to handle an arbitrary callback after reflow has finished.
|
|
nsresult
|
|
PresShell::PostReflowCallback(nsIReflowCallback* aCallback)
|
|
{
|
|
void* result = AllocateMisc(sizeof(nsCallbackEventRequest));
|
|
nsCallbackEventRequest* request = (nsCallbackEventRequest*)result;
|
|
|
|
request->callback = aCallback;
|
|
request->next = nullptr;
|
|
|
|
if (mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = mLastCallbackEventRequest->next = request;
|
|
} else {
|
|
mFirstCallbackEventRequest = request;
|
|
mLastCallbackEventRequest = request;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::CancelReflowCallback(nsIReflowCallback* aCallback)
|
|
{
|
|
nsCallbackEventRequest* before = nullptr;
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
while(node)
|
|
{
|
|
nsIReflowCallback* callback = node->callback;
|
|
|
|
if (callback == aCallback)
|
|
{
|
|
nsCallbackEventRequest* toFree = node;
|
|
if (node == mFirstCallbackEventRequest) {
|
|
node = node->next;
|
|
mFirstCallbackEventRequest = node;
|
|
NS_ASSERTION(before == nullptr, "impossible");
|
|
} else {
|
|
node = node->next;
|
|
before->next = node;
|
|
}
|
|
|
|
if (toFree == mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = before;
|
|
}
|
|
|
|
FreeMisc(sizeof(nsCallbackEventRequest), toFree);
|
|
} else {
|
|
before = node;
|
|
node = node->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CancelPostedReflowCallbacks()
|
|
{
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nullptr;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeMisc(sizeof(nsCallbackEventRequest), node);
|
|
if (callback) {
|
|
callback->ReflowCallbackCanceled();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::HandlePostedReflowCallbacks(bool aInterruptible)
|
|
{
|
|
bool shouldFlush = false;
|
|
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nullptr;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeMisc(sizeof(nsCallbackEventRequest), node);
|
|
if (callback) {
|
|
if (callback->ReflowFinished()) {
|
|
shouldFlush = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
mozFlushType flushType =
|
|
aInterruptible ? Flush_InterruptibleLayout : Flush_Layout;
|
|
if (shouldFlush && !mIsDestroying) {
|
|
FlushPendingNotifications(flushType);
|
|
}
|
|
}
|
|
|
|
bool
|
|
PresShell::IsSafeToFlush() const
|
|
{
|
|
// Not safe if we are reflowing or in the middle of frame construction
|
|
bool isSafeToFlush = !mIsReflowing &&
|
|
!mChangeNestCount;
|
|
|
|
if (isSafeToFlush) {
|
|
// Not safe if we are painting
|
|
nsViewManager* viewManager = GetViewManager();
|
|
if (viewManager) {
|
|
bool isPainting = false;
|
|
viewManager->IsPainting(isPainting);
|
|
if (isPainting) {
|
|
isSafeToFlush = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return isSafeToFlush;
|
|
}
|
|
|
|
|
|
void
|
|
PresShell::FlushPendingNotifications(mozFlushType aType)
|
|
{
|
|
// by default, flush animations if aType >= Flush_Style
|
|
mozilla::ChangesToFlush flush(aType, aType >= Flush_Style);
|
|
FlushPendingNotifications(flush);
|
|
}
|
|
|
|
void
|
|
PresShell::FlushPendingNotifications(mozilla::ChangesToFlush aFlush)
|
|
{
|
|
if (mIsZombie) {
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* VERY IMPORTANT: If you add some sort of new flushing to this
|
|
* method, make sure to add the relevant SetNeedLayoutFlush or
|
|
* SetNeedStyleFlush calls on the document.
|
|
*/
|
|
mozFlushType flushType = aFlush.mFlushType;
|
|
|
|
#ifdef MOZ_ENABLE_PROFILER_SPS
|
|
static const char flushTypeNames[][20] = {
|
|
"Content",
|
|
"ContentAndNotify",
|
|
"Style",
|
|
"InterruptibleLayout",
|
|
"Layout",
|
|
"Display"
|
|
};
|
|
|
|
// Make sure that we don't miss things added to mozFlushType!
|
|
MOZ_ASSERT(static_cast<uint32_t>(flushType) <= ArrayLength(flushTypeNames));
|
|
|
|
PROFILER_LABEL_PRINTF("layout", "Flush", "(Flush_%s)",
|
|
flushTypeNames[flushType - 1]);
|
|
#endif
|
|
|
|
#ifdef ACCESSIBILITY
|
|
#ifdef DEBUG
|
|
nsAccessibilityService* accService = GetAccService();
|
|
if (accService) {
|
|
NS_ASSERTION(!accService->IsProcessingRefreshDriverNotification(),
|
|
"Flush during accessible tree update!");
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
NS_ASSERTION(flushType >= Flush_Frames, "Why did we get called?");
|
|
|
|
bool isSafeToFlush = IsSafeToFlush();
|
|
|
|
// If layout could possibly trigger scripts, then it's only safe to flush if
|
|
// it's safe to run script.
|
|
bool hasHadScriptObject;
|
|
if (mDocument->GetScriptHandlingObject(hasHadScriptObject) ||
|
|
hasHadScriptObject) {
|
|
isSafeToFlush = isSafeToFlush && nsContentUtils::IsSafeToRunScript();
|
|
}
|
|
|
|
NS_ASSERTION(!isSafeToFlush || mViewManager, "Must have view manager");
|
|
// Make sure the view manager stays alive.
|
|
nsRefPtr<nsViewManager> viewManagerDeathGrip = mViewManager;
|
|
if (isSafeToFlush && mViewManager) {
|
|
// Processing pending notifications can kill us, and some callers only
|
|
// hold weak refs when calling FlushPendingNotifications(). :(
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
if (mResizeEvent.IsPending()) {
|
|
FireResizeEvent();
|
|
if (mIsDestroying) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// We need to make sure external resource documents are flushed too (for
|
|
// example, svg filters that reference a filter in an external document
|
|
// need the frames in the external document to be constructed for the
|
|
// filter to work). We only need external resources to be flushed when the
|
|
// main document is flushing >= Flush_Frames, so we flush external
|
|
// resources here instead of nsDocument::FlushPendingNotifications.
|
|
mDocument->FlushExternalResources(flushType);
|
|
|
|
// Force flushing of any pending content notifications that might have
|
|
// queued up while our event was pending. That will ensure that we don't
|
|
// construct frames for content right now that's still waiting to be
|
|
// notified on,
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
// Process pending restyles, since any flush of the presshell wants
|
|
// up-to-date style data.
|
|
if (!mIsDestroying) {
|
|
mViewManager->FlushDelayedResize(false);
|
|
mPresContext->FlushPendingMediaFeatureValuesChanged();
|
|
|
|
// Flush any pending update of the user font set, since that could
|
|
// cause style changes (for updating ex/ch units, and to cause a
|
|
// reflow).
|
|
mPresContext->FlushUserFontSet();
|
|
|
|
// Flush any requested SMIL samples.
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->FlushResampleRequests();
|
|
}
|
|
|
|
if (aFlush.mFlushAnimations &&
|
|
nsLayoutUtils::AreAsyncAnimationsEnabled() &&
|
|
!mPresContext->StyleUpdateForAllAnimationsIsUpToDate()) {
|
|
mPresContext->AnimationManager()->
|
|
FlushAnimations(CommonAnimationManager::Cannot_Throttle);
|
|
mPresContext->TransitionManager()->
|
|
FlushTransitions(CommonAnimationManager::Cannot_Throttle);
|
|
mPresContext->TickLastStyleUpdateForAllAnimations();
|
|
}
|
|
|
|
// The FlushResampleRequests() above flushed style changes.
|
|
if (!mIsDestroying) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
}
|
|
|
|
// Dispatch any 'animationstart' events those (or earlier) restyles
|
|
// queued up.
|
|
if (!mIsDestroying) {
|
|
mPresContext->AnimationManager()->DispatchEvents();
|
|
}
|
|
|
|
// Process whatever XBL constructors those restyles queued up. This
|
|
// ensures that onload doesn't fire too early and that we won't do extra
|
|
// reflows after those constructors run.
|
|
if (!mIsDestroying) {
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
}
|
|
|
|
// Now those constructors or events might have posted restyle
|
|
// events. At the same time, we still need up-to-date style data.
|
|
// In particular, reflow depends on style being completely up to
|
|
// date. If it's not, then style context reparenting, which can
|
|
// happen during reflow, might suddenly pick up the new rules and
|
|
// we'll end up with frames whose style doesn't match the frame
|
|
// type.
|
|
if (!mIsDestroying) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
mFrameConstructor->CreateNeededFrames();
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
|
|
// There might be more pending constructors now, but we're not going to
|
|
// worry about them. They can't be triggered during reflow, so we should
|
|
// be good.
|
|
|
|
if (flushType >= (mSuppressInterruptibleReflows ? Flush_Layout : Flush_InterruptibleLayout) &&
|
|
!mIsDestroying) {
|
|
mFrameConstructor->RecalcQuotesAndCounters();
|
|
mViewManager->FlushDelayedResize(true);
|
|
if (ProcessReflowCommands(flushType < Flush_Layout) && mContentToScrollTo) {
|
|
// We didn't get interrupted. Go ahead and scroll to our content
|
|
DoScrollContentIntoView();
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
}
|
|
} else if (!mIsDestroying && mSuppressInterruptibleReflows &&
|
|
flushType == Flush_InterruptibleLayout) {
|
|
// We suppressed this flush, but the document thinks it doesn't
|
|
// need to flush anymore. Let it know what's really going on.
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
|
|
if (flushType >= Flush_Layout) {
|
|
if (!mIsDestroying) {
|
|
mViewManager->UpdateWidgetGeometry();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CharacterDataWillChange(nsIDocument *aDocument,
|
|
nsIContent* aContent,
|
|
CharacterDataChangeInfo* aInfo)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected CharacterDataChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mCaret) {
|
|
// Invalidate the caret's current location before we call into the frame
|
|
// constructor. It is important to do this now, and not wait until the
|
|
// resulting reflow, because this call causes continuation frames of the
|
|
// text frame the caret is in to forget what part of the content they
|
|
// refer to, making it hard for them to return the correct continuation
|
|
// frame to the caret.
|
|
//
|
|
// It's also important to do this before the content actually changes, since
|
|
// in bidi text the caret needs to look at the content to determine its
|
|
// position and shape.
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::CharacterDataChanged(nsIDocument *aDocument,
|
|
nsIContent* aContent,
|
|
CharacterDataChangeInfo* aInfo)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected CharacterDataChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
nsIContent *container = aContent->GetParent();
|
|
uint32_t selectorFlags =
|
|
container ? (container->GetFlags() & NODE_ALL_SELECTOR_FLAGS) : 0;
|
|
if (selectorFlags != 0 && !aContent->IsRootOfAnonymousSubtree()) {
|
|
Element* element = container->AsElement();
|
|
if (aInfo->mAppend && !aContent->GetNextSibling())
|
|
mPresContext->RestyleManager()->RestyleForAppend(element, aContent);
|
|
else
|
|
mPresContext->RestyleManager()->RestyleForInsertOrChange(element, aContent);
|
|
}
|
|
|
|
mFrameConstructor->CharacterDataChanged(aContent, aInfo);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentStateChanged(nsIDocument* aDocument,
|
|
nsIContent* aContent,
|
|
nsEventStates aStateMask)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentStateChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->ContentStateChanged(aContent, aStateMask);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::DocumentStatesChanged(nsIDocument* aDocument,
|
|
nsEventStates aStateMask)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected DocumentStatesChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mDidInitialize &&
|
|
mStyleSet->HasDocumentStateDependentStyle(mPresContext,
|
|
mDocument->GetRootElement(),
|
|
aStateMask)) {
|
|
mPresContext->RestyleManager()->PostRestyleEvent(mDocument->GetRootElement(),
|
|
eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
if (aStateMask.HasState(NS_DOCUMENT_STATE_WINDOW_INACTIVE)) {
|
|
nsIFrame* root = mFrameConstructor->GetRootFrame();
|
|
if (root) {
|
|
root->SchedulePaint();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::AttributeWillChange(nsIDocument* aDocument,
|
|
Element* aElement,
|
|
int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected AttributeWillChange");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
// XXXwaterson it might be more elegant to wait until after the
|
|
// initial reflow to begin observing the document. That would
|
|
// squelch any other inappropriate notifications as well.
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->AttributeWillChange(aElement, aNameSpaceID,
|
|
aAttribute, aModType);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::AttributeChanged(nsIDocument* aDocument,
|
|
Element* aElement,
|
|
int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected AttributeChanged");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
// XXXwaterson it might be more elegant to wait until after the
|
|
// initial reflow to begin observing the document. That would
|
|
// squelch any other inappropriate notifications as well.
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->AttributeChanged(aElement, aNameSpaceID,
|
|
aAttribute, aModType);
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::ContentAppended(nsIDocument *aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aFirstNewContent,
|
|
int32_t aNewIndexInContainer)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentAppended");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
NS_PRECONDITION(aContainer, "must have container");
|
|
|
|
if (!mDidInitialize) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
mPresContext->RestyleManager()->
|
|
RestyleForAppend(aContainer->AsElement(), aFirstNewContent);
|
|
|
|
mFrameConstructor->ContentAppended(aContainer, aFirstNewContent, true);
|
|
|
|
if (static_cast<nsINode*>(aContainer) == static_cast<nsINode*>(aDocument) &&
|
|
aFirstNewContent->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentInserted(nsIDocument* aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
int32_t aIndexInContainer)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentInserted");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (!mDidInitialize) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
if (aContainer) {
|
|
mPresContext->RestyleManager()->
|
|
RestyleForInsertOrChange(aContainer->AsElement(), aChild);
|
|
}
|
|
|
|
mFrameConstructor->ContentInserted(aContainer, aChild, nullptr, true);
|
|
|
|
if (((!aContainer && aDocument) ||
|
|
(static_cast<nsINode*>(aContainer) == static_cast<nsINode*>(aDocument))) &&
|
|
aChild->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
void
|
|
PresShell::ContentRemoved(nsIDocument *aDocument,
|
|
nsIContent* aContainer,
|
|
nsIContent* aChild,
|
|
int32_t aIndexInContainer,
|
|
nsIContent* aPreviousSibling)
|
|
{
|
|
NS_PRECONDITION(!mIsDocumentGone, "Unexpected ContentRemoved");
|
|
NS_PRECONDITION(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
// Make sure that the caret doesn't leave a turd where the child used to be.
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
|
|
// Notify the ESM that the content has been removed, so that
|
|
// it can clean up any state related to the content.
|
|
|
|
// XXX_jwir3: There is no null check for aDocument necessary, since, even
|
|
// though by nsIMutationObserver, aDocument could be null, the
|
|
// precondition check that mDocument == aDocument ensures that
|
|
// aDocument will not be null (since mDocument can't be null unless
|
|
// we're still intializing).
|
|
mPresContext->EventStateManager()->ContentRemoved(aDocument, aChild);
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
nsIContent* oldNextSibling;
|
|
if (aContainer) {
|
|
oldNextSibling = aContainer->GetChildAt(aIndexInContainer);
|
|
} else {
|
|
oldNextSibling = nullptr;
|
|
}
|
|
|
|
if (aContainer && aContainer->IsElement()) {
|
|
mPresContext->RestyleManager()->
|
|
RestyleForRemove(aContainer->AsElement(), aChild, oldNextSibling);
|
|
}
|
|
|
|
bool didReconstruct;
|
|
mFrameConstructor->ContentRemoved(aContainer, aChild, oldNextSibling,
|
|
nsCSSFrameConstructor::REMOVE_CONTENT,
|
|
&didReconstruct);
|
|
|
|
|
|
if (((aContainer &&
|
|
static_cast<nsINode*>(aContainer) == static_cast<nsINode*>(aDocument)) ||
|
|
aDocument) && aChild->NodeType() == nsIDOMNode::DOCUMENT_TYPE_NODE) {
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::ReconstructFrames(void)
|
|
{
|
|
NS_PRECONDITION(!mFrameConstructor->GetRootFrame() || mDidInitialize,
|
|
"Must not have root frame before initial reflow");
|
|
if (!mDidInitialize) {
|
|
// Nothing to do here
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mFrameConstructor->BeginUpdate();
|
|
nsresult rv = mFrameConstructor->ReconstructDocElementHierarchy();
|
|
VERIFY_STYLE_TREE;
|
|
mFrameConstructor->EndUpdate();
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ReconstructStyleDataInternal()
|
|
{
|
|
nsAutoTArray<nsRefPtr<mozilla::dom::Element>,1> scopeRoots;
|
|
mChangedScopeStyleRoots.SwapElements(scopeRoots);
|
|
|
|
if (mStylesHaveChanged) {
|
|
// If we need to restyle everything, no need to restyle individual
|
|
// scoped style roots.
|
|
scopeRoots.Clear();
|
|
}
|
|
|
|
mStylesHaveChanged = false;
|
|
|
|
if (mIsDestroying) {
|
|
// We don't want to mess with restyles at this point
|
|
return;
|
|
}
|
|
|
|
if (mPresContext) {
|
|
mPresContext->RebuildUserFontSet();
|
|
}
|
|
|
|
Element* root = mDocument->GetRootElement();
|
|
if (!mDidInitialize) {
|
|
// Nothing to do here, since we have no frames yet
|
|
return;
|
|
}
|
|
|
|
if (!root) {
|
|
// No content to restyle
|
|
return;
|
|
}
|
|
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
if (scopeRoots.IsEmpty()) {
|
|
// If scopeRoots is empty, we know that mStylesHaveChanged was true at
|
|
// the beginning of this function, and that we need to restyle the whole
|
|
// document.
|
|
restyleManager->PostRestyleEvent(root, eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
} else {
|
|
for (uint32_t i = 0; i < scopeRoots.Length(); i++) {
|
|
Element* scopeRoot = scopeRoots[i];
|
|
restyleManager->PostRestyleEvent(scopeRoot, eRestyle_Subtree,
|
|
NS_STYLE_HINT_NONE);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::ReconstructStyleDataExternal()
|
|
{
|
|
ReconstructStyleDataInternal();
|
|
}
|
|
|
|
void
|
|
PresShell::RecordStyleSheetChange(nsIStyleSheet* aStyleSheet)
|
|
{
|
|
if (mStylesHaveChanged)
|
|
return;
|
|
|
|
nsRefPtr<nsCSSStyleSheet> cssStyleSheet = do_QueryObject(aStyleSheet);
|
|
if (cssStyleSheet) {
|
|
Element* scopeElement = cssStyleSheet->GetScopeElement();
|
|
if (scopeElement) {
|
|
mChangedScopeStyleRoots.AppendElement(scopeElement);
|
|
return;
|
|
}
|
|
}
|
|
|
|
mStylesHaveChanged = true;
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetAdded(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
bool aDocumentSheet)
|
|
{
|
|
// We only care when enabled sheets are added
|
|
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
|
|
|
|
if (aStyleSheet->IsApplicable() && aStyleSheet->HasRules()) {
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetRemoved(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
bool aDocumentSheet)
|
|
{
|
|
// We only care when enabled sheets are removed
|
|
NS_PRECONDITION(aStyleSheet, "Must have a style sheet!");
|
|
|
|
if (aStyleSheet->IsApplicable() && aStyleSheet->HasRules()) {
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleSheetApplicableStateChanged(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
bool aApplicable)
|
|
{
|
|
if (aStyleSheet->HasRules()) {
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleChanged(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aOldStyleRule,
|
|
nsIStyleRule* aNewStyleRule)
|
|
{
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleAdded(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aStyleRule)
|
|
{
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
|
|
void
|
|
PresShell::StyleRuleRemoved(nsIDocument *aDocument,
|
|
nsIStyleSheet* aStyleSheet,
|
|
nsIStyleRule* aStyleRule)
|
|
{
|
|
RecordStyleSheetChange(aStyleSheet);
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetRealPrimaryFrameFor(nsIContent* aContent) const
|
|
{
|
|
if (aContent->GetDocument() != GetDocument()) {
|
|
return nullptr;
|
|
}
|
|
nsIFrame *primaryFrame = aContent->GetPrimaryFrame();
|
|
if (!primaryFrame)
|
|
return nullptr;
|
|
return nsPlaceholderFrame::GetRealFrameFor(primaryFrame);
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetPlaceholderFrameFor(nsIFrame* aFrame) const
|
|
{
|
|
return mFrameConstructor->GetPlaceholderFrameFor(aFrame);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RenderDocument(const nsRect& aRect, uint32_t aFlags,
|
|
nscolor aBackgroundColor,
|
|
gfxContext* aThebesContext)
|
|
{
|
|
NS_ENSURE_TRUE(!(aFlags & RENDER_IS_UNTRUSTED), NS_ERROR_NOT_IMPLEMENTED);
|
|
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
rootPresContext->FlushWillPaintObservers();
|
|
if (mIsDestroying)
|
|
return NS_OK;
|
|
}
|
|
|
|
nsAutoScriptBlocker blockScripts;
|
|
|
|
// Set up the rectangle as the path in aThebesContext
|
|
gfxRect r(0, 0,
|
|
nsPresContext::AppUnitsToFloatCSSPixels(aRect.width),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(aRect.height));
|
|
aThebesContext->NewPath();
|
|
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
|
|
aThebesContext->Rectangle(r, true);
|
|
#else
|
|
aThebesContext->Rectangle(r);
|
|
#endif
|
|
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
// Nothing to paint, just fill the rect
|
|
aThebesContext->SetColor(gfxRGBA(aBackgroundColor));
|
|
aThebesContext->Fill();
|
|
return NS_OK;
|
|
}
|
|
|
|
gfxContextAutoSaveRestore save(aThebesContext);
|
|
|
|
gfxContext::GraphicsOperator oldOperator = aThebesContext->CurrentOperator();
|
|
if (oldOperator == gfxContext::OPERATOR_OVER) {
|
|
// Clip to the destination rectangle before we push the group,
|
|
// to limit the size of the temporary surface
|
|
aThebesContext->Clip();
|
|
}
|
|
|
|
// we want the window to be composited as a single image using
|
|
// whatever operator was set; set OPERATOR_OVER here, which is
|
|
// either already the case, or overrides the operator in a group.
|
|
// the original operator will be present when we PopGroup.
|
|
// we can avoid using a temporary surface if we're using OPERATOR_OVER
|
|
bool needsGroup = oldOperator != gfxContext::OPERATOR_OVER;
|
|
|
|
if (needsGroup) {
|
|
aThebesContext->PushGroup(NS_GET_A(aBackgroundColor) == 0xff ?
|
|
GFX_CONTENT_COLOR :
|
|
GFX_CONTENT_COLOR_ALPHA);
|
|
aThebesContext->Save();
|
|
|
|
if (oldOperator != gfxContext::OPERATOR_OVER) {
|
|
// Clip now while we paint to the temporary surface. For
|
|
// non-source-bounded operators (e.g., SOURCE), we need to do clip
|
|
// here after we've pushed the group, so that eventually popping
|
|
// the group and painting it will be able to clear the entire
|
|
// destination surface.
|
|
aThebesContext->Clip();
|
|
aThebesContext->SetOperator(gfxContext::OPERATOR_OVER);
|
|
}
|
|
}
|
|
|
|
aThebesContext->Translate(gfxPoint(-nsPresContext::AppUnitsToFloatCSSPixels(aRect.x),
|
|
-nsPresContext::AppUnitsToFloatCSSPixels(aRect.y)));
|
|
|
|
nsDeviceContext* devCtx = mPresContext->DeviceContext();
|
|
gfxFloat scale = gfxFloat(devCtx->AppUnitsPerDevPixel())/nsPresContext::AppUnitsPerCSSPixel();
|
|
aThebesContext->Scale(scale, scale);
|
|
|
|
// Since canvas APIs use floats to set up their matrices, we may have
|
|
// some slight inaccuracy here. Adjust matrix components that are
|
|
// integers up to the accuracy of floats to be those integers.
|
|
aThebesContext->NudgeCurrentMatrixToIntegers();
|
|
|
|
AutoSaveRestoreRenderingState _(this);
|
|
|
|
nsRefPtr<nsRenderingContext> rc = new nsRenderingContext();
|
|
rc->Init(devCtx, aThebesContext);
|
|
|
|
bool wouldFlushRetainedLayers = false;
|
|
uint32_t flags = nsLayoutUtils::PAINT_IGNORE_SUPPRESSION;
|
|
if (aThebesContext->CurrentMatrix().HasNonIntegerTranslation()) {
|
|
flags |= nsLayoutUtils::PAINT_IN_TRANSFORM;
|
|
}
|
|
if (!(aFlags & RENDER_ASYNC_DECODE_IMAGES)) {
|
|
flags |= nsLayoutUtils::PAINT_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (aFlags & RENDER_USE_WIDGET_LAYERS) {
|
|
// We only support using widget layers on display root's with widgets.
|
|
nsView* view = rootFrame->GetView();
|
|
if (view && view->GetWidget() &&
|
|
nsLayoutUtils::GetDisplayRootFrame(rootFrame) == rootFrame) {
|
|
flags |= nsLayoutUtils::PAINT_WIDGET_LAYERS;
|
|
}
|
|
}
|
|
if (!(aFlags & RENDER_CARET)) {
|
|
wouldFlushRetainedLayers = true;
|
|
flags |= nsLayoutUtils::PAINT_HIDE_CARET;
|
|
}
|
|
if (aFlags & RENDER_IGNORE_VIEWPORT_SCROLLING) {
|
|
wouldFlushRetainedLayers = !IgnoringViewportScrolling();
|
|
mRenderFlags = ChangeFlag(mRenderFlags, true, STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
}
|
|
if (aFlags & RENDER_DRAWWINDOW_NOT_FLUSHING) {
|
|
mRenderFlags = ChangeFlag(mRenderFlags, true, STATE_DRAWWINDOW_NOT_FLUSHING);
|
|
}
|
|
if (aFlags & RENDER_DOCUMENT_RELATIVE) {
|
|
// XXX be smarter about this ... drawWindow might want a rect
|
|
// that's "pretty close" to what our retained layer tree covers.
|
|
// In that case, it wouldn't disturb normal rendering too much,
|
|
// and we should allow it.
|
|
wouldFlushRetainedLayers = true;
|
|
flags |= nsLayoutUtils::PAINT_DOCUMENT_RELATIVE;
|
|
}
|
|
|
|
// Don't let drawWindow blow away our retained layer tree
|
|
if ((flags & nsLayoutUtils::PAINT_WIDGET_LAYERS) && wouldFlushRetainedLayers) {
|
|
flags &= ~nsLayoutUtils::PAINT_WIDGET_LAYERS;
|
|
}
|
|
|
|
nsLayoutUtils::PaintFrame(rc, rootFrame, nsRegion(aRect),
|
|
aBackgroundColor, flags);
|
|
|
|
// if we had to use a group, paint it to the destination now
|
|
if (needsGroup) {
|
|
aThebesContext->Restore();
|
|
aThebesContext->PopGroupToSource();
|
|
aThebesContext->Paint();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/*
|
|
* Clip the display list aList to a range. Returns the clipped
|
|
* rectangle surrounding the range.
|
|
*/
|
|
nsRect
|
|
PresShell::ClipListToRange(nsDisplayListBuilder *aBuilder,
|
|
nsDisplayList* aList,
|
|
nsRange* aRange)
|
|
{
|
|
// iterate though the display items and add up the bounding boxes of each.
|
|
// This will allow the total area of the frames within the range to be
|
|
// determined. To do this, remove an item from the bottom of the list, check
|
|
// whether it should be part of the range, and if so, append it to the top
|
|
// of the temporary list tmpList. If the item is a text frame at the end of
|
|
// the selection range, clip it to the portion of the text frame that is
|
|
// part of the selection. Then, append the wrapper to the top of the list.
|
|
// Otherwise, just delete the item and don't append it.
|
|
nsRect surfaceRect;
|
|
nsDisplayList tmpList;
|
|
|
|
nsDisplayItem* i;
|
|
while ((i = aList->RemoveBottom())) {
|
|
// itemToInsert indiciates the item that should be inserted into the
|
|
// temporary list. If null, no item should be inserted.
|
|
nsDisplayItem* itemToInsert = nullptr;
|
|
nsIFrame* frame = i->Frame();
|
|
nsIContent* content = frame->GetContent();
|
|
if (content) {
|
|
bool atStart = (content == aRange->GetStartParent());
|
|
bool atEnd = (content == aRange->GetEndParent());
|
|
if ((atStart || atEnd) && frame->GetType() == nsGkAtoms::textFrame) {
|
|
int32_t frameStartOffset, frameEndOffset;
|
|
frame->GetOffsets(frameStartOffset, frameEndOffset);
|
|
|
|
int32_t hilightStart =
|
|
atStart ? std::max(aRange->StartOffset(), frameStartOffset) : frameStartOffset;
|
|
int32_t hilightEnd =
|
|
atEnd ? std::min(aRange->EndOffset(), frameEndOffset) : frameEndOffset;
|
|
if (hilightStart < hilightEnd) {
|
|
// determine the location of the start and end edges of the range.
|
|
nsPoint startPoint, endPoint;
|
|
frame->GetPointFromOffset(hilightStart, &startPoint);
|
|
frame->GetPointFromOffset(hilightEnd, &endPoint);
|
|
|
|
// the clip rectangle is determined by taking the the start and
|
|
// end points of the range, offset from the reference frame.
|
|
// Because of rtl, the end point may be to the left of the
|
|
// start point, so x is set to the lowest value
|
|
nsRect textRect(aBuilder->ToReferenceFrame(frame), frame->GetSize());
|
|
nscoord x = std::min(startPoint.x, endPoint.x);
|
|
textRect.x += x;
|
|
textRect.width = std::max(startPoint.x, endPoint.x) - x;
|
|
surfaceRect.UnionRect(surfaceRect, textRect);
|
|
|
|
DisplayItemClip newClip;
|
|
newClip.SetTo(textRect);
|
|
newClip.IntersectWith(i->GetClip());
|
|
i->SetClip(aBuilder, newClip);
|
|
itemToInsert = i;
|
|
}
|
|
}
|
|
// Don't try to descend into subdocuments.
|
|
// If this ever changes we'd need to add handling for subdocuments with
|
|
// different zoom levels.
|
|
else if (content->GetCurrentDoc() ==
|
|
aRange->GetStartParent()->GetCurrentDoc()) {
|
|
// if the node is within the range, append it to the temporary list
|
|
bool before, after;
|
|
nsresult rv =
|
|
nsRange::CompareNodeToRange(content, aRange, &before, &after);
|
|
if (NS_SUCCEEDED(rv) && !before && !after) {
|
|
itemToInsert = i;
|
|
bool snap;
|
|
surfaceRect.UnionRect(surfaceRect, i->GetBounds(aBuilder, &snap));
|
|
}
|
|
}
|
|
}
|
|
|
|
// insert the item into the list if necessary. If the item has a child
|
|
// list, insert that as well
|
|
nsDisplayList* sublist = i->GetSameCoordinateSystemChildren();
|
|
if (itemToInsert || sublist) {
|
|
tmpList.AppendToTop(itemToInsert ? itemToInsert : i);
|
|
// if the item is a list, iterate over it as well
|
|
if (sublist)
|
|
surfaceRect.UnionRect(surfaceRect,
|
|
ClipListToRange(aBuilder, sublist, aRange));
|
|
}
|
|
else {
|
|
// otherwise, just delete the item and don't readd it to the list
|
|
i->~nsDisplayItem();
|
|
}
|
|
}
|
|
|
|
// now add all the items back onto the original list again
|
|
aList->AppendToTop(&tmpList);
|
|
|
|
return surfaceRect;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
#include <stdio.h>
|
|
|
|
static bool gDumpRangePaintList = false;
|
|
#endif
|
|
|
|
RangePaintInfo*
|
|
PresShell::CreateRangePaintInfo(nsIDOMRange* aRange,
|
|
nsRect& aSurfaceRect,
|
|
bool aForPrimarySelection)
|
|
{
|
|
RangePaintInfo* info = nullptr;
|
|
|
|
nsRange* range = static_cast<nsRange*>(aRange);
|
|
|
|
nsIFrame* ancestorFrame;
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
|
|
// If the start or end of the range is the document, just use the root
|
|
// frame, otherwise get the common ancestor of the two endpoints of the
|
|
// range.
|
|
nsINode* startParent = range->GetStartParent();
|
|
nsINode* endParent = range->GetEndParent();
|
|
nsIDocument* doc = startParent->GetCurrentDoc();
|
|
if (startParent == doc || endParent == doc) {
|
|
ancestorFrame = rootFrame;
|
|
}
|
|
else {
|
|
nsINode* ancestor = nsContentUtils::GetCommonAncestor(startParent, endParent);
|
|
NS_ASSERTION(!ancestor || ancestor->IsNodeOfType(nsINode::eCONTENT),
|
|
"common ancestor is not content");
|
|
if (!ancestor || !ancestor->IsNodeOfType(nsINode::eCONTENT))
|
|
return nullptr;
|
|
|
|
nsIContent* ancestorContent = static_cast<nsIContent*>(ancestor);
|
|
ancestorFrame = ancestorContent->GetPrimaryFrame();
|
|
|
|
// use the nearest ancestor frame that includes all continuations as the
|
|
// root for building the display list
|
|
while (ancestorFrame &&
|
|
nsLayoutUtils::GetNextContinuationOrSpecialSibling(ancestorFrame))
|
|
ancestorFrame = ancestorFrame->GetParent();
|
|
}
|
|
|
|
if (!ancestorFrame)
|
|
return nullptr;
|
|
|
|
info = new RangePaintInfo(range, ancestorFrame);
|
|
|
|
nsRect ancestorRect = ancestorFrame->GetVisualOverflowRect();
|
|
|
|
// get a display list containing the range
|
|
info->mBuilder.SetIncludeAllOutOfFlows();
|
|
if (aForPrimarySelection) {
|
|
info->mBuilder.SetSelectedFramesOnly();
|
|
}
|
|
info->mBuilder.EnterPresShell(ancestorFrame, ancestorRect);
|
|
ancestorFrame->BuildDisplayListForStackingContext(&info->mBuilder,
|
|
ancestorRect, &info->mList);
|
|
|
|
#ifdef DEBUG
|
|
if (gDumpRangePaintList) {
|
|
fprintf(stderr, "CreateRangePaintInfo --- before ClipListToRange:\n");
|
|
nsFrame::PrintDisplayList(&(info->mBuilder), info->mList);
|
|
}
|
|
#endif
|
|
|
|
nsRect rangeRect = ClipListToRange(&info->mBuilder, &info->mList, range);
|
|
|
|
info->mBuilder.LeavePresShell(ancestorFrame, ancestorRect);
|
|
|
|
#ifdef DEBUG
|
|
if (gDumpRangePaintList) {
|
|
fprintf(stderr, "CreateRangePaintInfo --- after ClipListToRange:\n");
|
|
nsFrame::PrintDisplayList(&(info->mBuilder), info->mList);
|
|
}
|
|
#endif
|
|
|
|
// determine the offset of the reference frame for the display list
|
|
// to the root frame. This will allow the coordinates used when painting
|
|
// to all be offset from the same point
|
|
info->mRootOffset = ancestorFrame->GetOffsetTo(rootFrame);
|
|
rangeRect.MoveBy(info->mRootOffset);
|
|
aSurfaceRect.UnionRect(aSurfaceRect, rangeRect);
|
|
|
|
return info;
|
|
}
|
|
|
|
already_AddRefed<gfxASurface>
|
|
PresShell::PaintRangePaintInfo(nsTArray<nsAutoPtr<RangePaintInfo> >* aItems,
|
|
nsISelection* aSelection,
|
|
nsIntRegion* aRegion,
|
|
nsRect aArea,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect)
|
|
{
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc || aArea.width == 0 || aArea.height == 0)
|
|
return nullptr;
|
|
|
|
nsDeviceContext* deviceContext = pc->DeviceContext();
|
|
|
|
// use the rectangle to create the surface
|
|
nsIntRect pixelArea = aArea.ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
|
|
// if the area of the image is larger than the maximum area, scale it down
|
|
float scale = 0.0;
|
|
nsIntRect rootScreenRect =
|
|
GetRootFrame()->GetScreenRectInAppUnits().ToNearestPixels(
|
|
pc->AppUnitsPerDevPixel());
|
|
|
|
// if the image is larger in one or both directions than half the size of
|
|
// the available screen area, scale the image down to that size.
|
|
nsRect maxSize;
|
|
deviceContext->GetClientRect(maxSize);
|
|
nscoord maxWidth = pc->AppUnitsToDevPixels(maxSize.width >> 1);
|
|
nscoord maxHeight = pc->AppUnitsToDevPixels(maxSize.height >> 1);
|
|
bool resize = (pixelArea.width > maxWidth || pixelArea.height > maxHeight);
|
|
if (resize) {
|
|
scale = 1.0;
|
|
// divide the maximum size by the image size in both directions. Whichever
|
|
// direction produces the smallest result determines how much should be
|
|
// scaled.
|
|
if (pixelArea.width > maxWidth)
|
|
scale = std::min(scale, float(maxWidth) / pixelArea.width);
|
|
if (pixelArea.height > maxHeight)
|
|
scale = std::min(scale, float(maxHeight) / pixelArea.height);
|
|
|
|
pixelArea.width = NSToIntFloor(float(pixelArea.width) * scale);
|
|
pixelArea.height = NSToIntFloor(float(pixelArea.height) * scale);
|
|
|
|
// adjust the screen position based on the rescaled size
|
|
nscoord left = rootScreenRect.x + pixelArea.x;
|
|
nscoord top = rootScreenRect.y + pixelArea.y;
|
|
aScreenRect->x = NSToIntFloor(aPoint.x - float(aPoint.x - left) * scale);
|
|
aScreenRect->y = NSToIntFloor(aPoint.y - float(aPoint.y - top) * scale);
|
|
}
|
|
else {
|
|
// move aScreenRect to the position of the surface in screen coordinates
|
|
aScreenRect->MoveTo(rootScreenRect.x + pixelArea.x, rootScreenRect.y + pixelArea.y);
|
|
}
|
|
aScreenRect->width = pixelArea.width;
|
|
aScreenRect->height = pixelArea.height;
|
|
|
|
nsRefPtr<gfxImageSurface> surface =
|
|
new gfxImageSurface(gfxIntSize(pixelArea.width, pixelArea.height),
|
|
gfxImageFormatARGB32);
|
|
if (surface->CairoStatus()) {
|
|
return nullptr;
|
|
}
|
|
|
|
// clear the image
|
|
gfxContext context(surface);
|
|
context.SetOperator(gfxContext::OPERATOR_CLEAR);
|
|
context.Rectangle(gfxRect(0, 0, pixelArea.width, pixelArea.height));
|
|
context.Fill();
|
|
|
|
nsRefPtr<nsRenderingContext> rc = new nsRenderingContext();
|
|
rc->Init(deviceContext, surface);
|
|
|
|
if (aRegion) {
|
|
// Convert aRegion from CSS pixels to dev pixels
|
|
nsIntRegion region =
|
|
aRegion->ToAppUnits(nsPresContext::AppUnitsPerCSSPixel())
|
|
.ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
rc->SetClip(region);
|
|
}
|
|
|
|
if (resize)
|
|
rc->Scale(scale, scale);
|
|
|
|
// translate so that points are relative to the surface area
|
|
rc->Translate(-aArea.TopLeft());
|
|
|
|
// temporarily hide the selection so that text is drawn normally. If a
|
|
// selection is being rendered, use that, otherwise use the presshell's
|
|
// selection.
|
|
nsRefPtr<nsFrameSelection> frameSelection;
|
|
if (aSelection) {
|
|
frameSelection = static_cast<Selection*>(aSelection)->GetFrameSelection();
|
|
}
|
|
else {
|
|
frameSelection = FrameSelection();
|
|
}
|
|
int16_t oldDisplaySelection = frameSelection->GetDisplaySelection();
|
|
frameSelection->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
|
|
|
|
// next, paint each range in the selection
|
|
int32_t count = aItems->Length();
|
|
for (int32_t i = 0; i < count; i++) {
|
|
RangePaintInfo* rangeInfo = (*aItems)[i];
|
|
// the display lists paint relative to the offset from the reference
|
|
// frame, so translate the rendering context
|
|
nsRenderingContext::AutoPushTranslation
|
|
translate(rc, rangeInfo->mRootOffset);
|
|
|
|
aArea.MoveBy(-rangeInfo->mRootOffset.x, -rangeInfo->mRootOffset.y);
|
|
nsRegion visible(aArea);
|
|
rangeInfo->mList.ComputeVisibilityForRoot(&rangeInfo->mBuilder, &visible);
|
|
rangeInfo->mList.PaintRoot(&rangeInfo->mBuilder, rc, nsDisplayList::PAINT_DEFAULT);
|
|
aArea.MoveBy(rangeInfo->mRootOffset.x, rangeInfo->mRootOffset.y);
|
|
}
|
|
|
|
// restore the old selection display state
|
|
frameSelection->SetDisplaySelection(oldDisplaySelection);
|
|
|
|
return surface.forget();
|
|
}
|
|
|
|
already_AddRefed<gfxASurface>
|
|
PresShell::RenderNode(nsIDOMNode* aNode,
|
|
nsIntRegion* aRegion,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect)
|
|
{
|
|
// area will hold the size of the surface needed to draw the node, measured
|
|
// from the root frame.
|
|
nsRect area;
|
|
nsTArray<nsAutoPtr<RangePaintInfo> > rangeItems;
|
|
|
|
// nothing to draw if the node isn't in a document
|
|
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
|
|
if (!node->IsInDoc())
|
|
return nullptr;
|
|
|
|
nsRefPtr<nsRange> range = new nsRange(node);
|
|
if (NS_FAILED(range->SelectNode(aNode)))
|
|
return nullptr;
|
|
|
|
RangePaintInfo* info = CreateRangePaintInfo(range, area, false);
|
|
if (info && !rangeItems.AppendElement(info)) {
|
|
delete info;
|
|
return nullptr;
|
|
}
|
|
|
|
if (aRegion) {
|
|
// combine the area with the supplied region
|
|
nsIntRect rrectPixels = aRegion->GetBounds();
|
|
|
|
nsRect rrect = rrectPixels.ToAppUnits(nsPresContext::AppUnitsPerCSSPixel());
|
|
area.IntersectRect(area, rrect);
|
|
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc)
|
|
return nullptr;
|
|
|
|
// move the region so that it is offset from the topleft corner of the surface
|
|
aRegion->MoveBy(-pc->AppUnitsToDevPixels(area.x),
|
|
-pc->AppUnitsToDevPixels(area.y));
|
|
}
|
|
|
|
return PaintRangePaintInfo(&rangeItems, nullptr, aRegion, area, aPoint,
|
|
aScreenRect);
|
|
}
|
|
|
|
already_AddRefed<gfxASurface>
|
|
PresShell::RenderSelection(nsISelection* aSelection,
|
|
nsIntPoint& aPoint,
|
|
nsIntRect* aScreenRect)
|
|
{
|
|
// area will hold the size of the surface needed to draw the selection,
|
|
// measured from the root frame.
|
|
nsRect area;
|
|
nsTArray<nsAutoPtr<RangePaintInfo> > rangeItems;
|
|
|
|
// iterate over each range and collect them into the rangeItems array.
|
|
// This is done so that the size of selection can be determined so as
|
|
// to allocate a surface area
|
|
int32_t numRanges;
|
|
aSelection->GetRangeCount(&numRanges);
|
|
NS_ASSERTION(numRanges > 0, "RenderSelection called with no selection");
|
|
|
|
for (int32_t r = 0; r < numRanges; r++)
|
|
{
|
|
nsCOMPtr<nsIDOMRange> range;
|
|
aSelection->GetRangeAt(r, getter_AddRefs(range));
|
|
|
|
RangePaintInfo* info = CreateRangePaintInfo(range, area, true);
|
|
if (info && !rangeItems.AppendElement(info)) {
|
|
delete info;
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return PaintRangePaintInfo(&rangeItems, aSelection, nullptr, area, aPoint,
|
|
aScreenRect);
|
|
}
|
|
|
|
void
|
|
PresShell::AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds)
|
|
{
|
|
aList.AppendNewToBottom(new (&aBuilder)
|
|
nsDisplaySolidColor(&aBuilder, aFrame, aBounds, NS_RGB(115, 115, 115)));
|
|
}
|
|
|
|
static bool
|
|
AddCanvasBackgroundColor(const nsDisplayList& aList, nsIFrame* aCanvasFrame,
|
|
nscolor aColor)
|
|
{
|
|
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
|
|
if (i->Frame() == aCanvasFrame &&
|
|
i->GetType() == nsDisplayItem::TYPE_CANVAS_BACKGROUND_COLOR) {
|
|
nsDisplayCanvasBackgroundColor* bg = static_cast<nsDisplayCanvasBackgroundColor*>(i);
|
|
bg->SetExtraBackgroundColor(aColor);
|
|
return true;
|
|
}
|
|
nsDisplayList* sublist = i->GetSameCoordinateSystemChildren();
|
|
if (sublist && AddCanvasBackgroundColor(*sublist, aCanvasFrame, aColor))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
PresShell::AddCanvasBackgroundColorItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds,
|
|
nscolor aBackstopColor,
|
|
uint32_t aFlags)
|
|
{
|
|
if (aBounds.IsEmpty()) {
|
|
return;
|
|
}
|
|
// We don't want to add an item for the canvas background color if the frame
|
|
// (sub)tree we are painting doesn't include any canvas frames. There isn't
|
|
// an easy way to check this directly, but if we check if the root of the
|
|
// (sub)tree we are painting is a canvas frame that should cover us in all
|
|
// cases (it will usually be a viewport frame when we have a canvas frame in
|
|
// the (sub)tree).
|
|
if (!(aFlags & nsIPresShell::FORCE_DRAW) &&
|
|
!nsCSSRendering::IsCanvasFrame(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
nscolor bgcolor = NS_ComposeColors(aBackstopColor, mCanvasBackgroundColor);
|
|
if (NS_GET_A(bgcolor) == 0)
|
|
return;
|
|
|
|
// To make layers work better, we want to avoid having a big non-scrolled
|
|
// color background behind a scrolled transparent background. Instead,
|
|
// we'll try to move the color background into the scrolled content
|
|
// by making nsDisplayCanvasBackground paint it.
|
|
if (!aFrame->GetParent()) {
|
|
nsIScrollableFrame* sf =
|
|
aFrame->PresContext()->PresShell()->GetRootScrollFrameAsScrollable();
|
|
if (sf) {
|
|
nsCanvasFrame* canvasFrame = do_QueryFrame(sf->GetScrolledFrame());
|
|
if (canvasFrame && canvasFrame->IsVisibleForPainting(&aBuilder)) {
|
|
if (AddCanvasBackgroundColor(aList, canvasFrame, bgcolor))
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
aList.AppendNewToBottom(
|
|
new (&aBuilder) nsDisplaySolidColor(&aBuilder, aFrame, aBounds, bgcolor));
|
|
}
|
|
|
|
static bool IsTransparentContainerElement(nsPresContext* aPresContext)
|
|
{
|
|
nsCOMPtr<nsISupports> container = aPresContext->GetContainerInternal();
|
|
nsCOMPtr<nsIDocShellTreeItem> docShellItem = do_QueryInterface(container);
|
|
nsCOMPtr<nsPIDOMWindow> pwin(do_GetInterface(docShellItem));
|
|
if (!pwin)
|
|
return false;
|
|
nsCOMPtr<nsIContent> containerElement =
|
|
do_QueryInterface(pwin->GetFrameElementInternal());
|
|
return containerElement &&
|
|
containerElement->HasAttr(kNameSpaceID_None, nsGkAtoms::transparent);
|
|
}
|
|
|
|
nscolor PresShell::GetDefaultBackgroundColorToDraw()
|
|
{
|
|
if (!mPresContext || !mPresContext->GetBackgroundColorDraw()) {
|
|
return NS_RGB(255,255,255);
|
|
}
|
|
return mPresContext->DefaultBackgroundColor();
|
|
}
|
|
|
|
void PresShell::UpdateCanvasBackground()
|
|
{
|
|
// If we have a frame tree and it has style information that
|
|
// specifies the background color of the canvas, update our local
|
|
// cache of that color.
|
|
nsIFrame* rootStyleFrame = FrameConstructor()->GetRootElementStyleFrame();
|
|
if (rootStyleFrame) {
|
|
nsStyleContext* bgStyle =
|
|
nsCSSRendering::FindRootFrameBackground(rootStyleFrame);
|
|
// XXX We should really be passing the canvasframe, not the root element
|
|
// style frame but we don't have access to the canvasframe here. It isn't
|
|
// a problem because only a few frames can return something other than true
|
|
// and none of them would be a canvas frame or root element style frame.
|
|
bool drawBackgroundImage;
|
|
bool drawBackgroundColor;
|
|
|
|
mCanvasBackgroundColor =
|
|
nsCSSRendering::DetermineBackgroundColor(mPresContext, bgStyle,
|
|
rootStyleFrame,
|
|
drawBackgroundImage,
|
|
drawBackgroundColor);
|
|
if (GetPresContext()->IsCrossProcessRootContentDocument() &&
|
|
!IsTransparentContainerElement(mPresContext)) {
|
|
mCanvasBackgroundColor =
|
|
NS_ComposeColors(GetDefaultBackgroundColorToDraw(), mCanvasBackgroundColor);
|
|
}
|
|
}
|
|
|
|
// If the root element of the document (ie html) has style 'display: none'
|
|
// then the document's background color does not get drawn; cache the
|
|
// color we actually draw.
|
|
if (!FrameConstructor()->GetRootElementFrame()) {
|
|
mCanvasBackgroundColor = GetDefaultBackgroundColorToDraw();
|
|
}
|
|
if (XRE_GetProcessType() == GeckoProcessType_Content) {
|
|
if (TabChild* tabChild = TabChild::GetFrom(this)) {
|
|
tabChild->SetBackgroundColor(mCanvasBackgroundColor);
|
|
}
|
|
}
|
|
}
|
|
|
|
nscolor PresShell::ComputeBackstopColor(nsView* aDisplayRoot)
|
|
{
|
|
nsIWidget* widget = aDisplayRoot->GetWidget();
|
|
if (widget && (widget->GetTransparencyMode() != eTransparencyOpaque ||
|
|
widget->WidgetPaintsBackground())) {
|
|
// Within a transparent widget, so the backstop color must be
|
|
// totally transparent.
|
|
return NS_RGBA(0,0,0,0);
|
|
}
|
|
// Within an opaque widget (or no widget at all), so the backstop
|
|
// color must be totally opaque. The user's default background
|
|
// as reported by the prescontext is guaranteed to be opaque.
|
|
return GetDefaultBackgroundColorToDraw();
|
|
}
|
|
|
|
struct PaintParams {
|
|
nscolor mBackgroundColor;
|
|
};
|
|
|
|
LayerManager* PresShell::GetLayerManager()
|
|
{
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
if (rootView) {
|
|
if (nsIWidget* widget = rootView->GetWidget()) {
|
|
return widget->GetLayerManager();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void PresShell::SetIgnoreViewportScrolling(bool aIgnore)
|
|
{
|
|
if (IgnoringViewportScrolling() == aIgnore) {
|
|
return;
|
|
}
|
|
RenderingState state(this);
|
|
state.mRenderFlags = ChangeFlag(state.mRenderFlags, aIgnore,
|
|
STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
SetRenderingState(state);
|
|
}
|
|
|
|
void PresShell::SetDisplayPort(const nsRect& aDisplayPort)
|
|
{
|
|
NS_ABORT_IF_FALSE(false, "SetDisplayPort is deprecated");
|
|
}
|
|
|
|
nsresult PresShell::SetResolution(float aXResolution, float aYResolution)
|
|
{
|
|
if (!(aXResolution > 0.0 && aYResolution > 0.0)) {
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
if (aXResolution == mXResolution && aYResolution == mYResolution) {
|
|
return NS_OK;
|
|
}
|
|
RenderingState state(this);
|
|
state.mXResolution = aXResolution;
|
|
state.mYResolution = aYResolution;
|
|
SetRenderingState(state);
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::SetRenderingState(const RenderingState& aState)
|
|
{
|
|
if (mRenderFlags != aState.mRenderFlags) {
|
|
// Rendering state changed in a way that forces us to flush any
|
|
// retained layers we might already have.
|
|
LayerManager* manager = GetLayerManager();
|
|
if (manager) {
|
|
FrameLayerBuilder::InvalidateAllLayers(manager);
|
|
}
|
|
}
|
|
|
|
mRenderFlags = aState.mRenderFlags;
|
|
mXResolution = aState.mXResolution;
|
|
mYResolution = aState.mYResolution;
|
|
}
|
|
|
|
void PresShell::SynthesizeMouseMove(bool aFromScroll)
|
|
{
|
|
if (!sSynthMouseMove)
|
|
return;
|
|
|
|
if (mPaintingSuppressed || !mIsActive || !mPresContext) {
|
|
return;
|
|
}
|
|
|
|
if (!mPresContext->IsRoot()) {
|
|
nsIPresShell* rootPresShell = GetRootPresShell();
|
|
if (rootPresShell) {
|
|
rootPresShell->SynthesizeMouseMove(aFromScroll);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (mMouseLocation == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE))
|
|
return;
|
|
|
|
if (!mSynthMouseMoveEvent.IsPending()) {
|
|
nsRefPtr<nsSynthMouseMoveEvent> ev =
|
|
new nsSynthMouseMoveEvent(this, aFromScroll);
|
|
|
|
if (!GetPresContext()->RefreshDriver()->AddRefreshObserver(ev,
|
|
Flush_Display)) {
|
|
NS_WARNING("failed to dispatch nsSynthMouseMoveEvent");
|
|
return;
|
|
}
|
|
|
|
mSynthMouseMoveEvent = ev;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find the first floating view with a widget in a postorder traversal of the
|
|
* view tree that contains the point. Thus more deeply nested floating views
|
|
* are preferred over their ancestors, and floating views earlier in the
|
|
* view hierarchy (i.e., added later) are preferred over their siblings.
|
|
* This is adequate for finding the "topmost" floating view under a point,
|
|
* given that floating views don't supporting having a specific z-index.
|
|
*
|
|
* We cannot exit early when aPt is outside the view bounds, because floating
|
|
* views aren't necessarily included in their parent's bounds, so this could
|
|
* traverse the entire view hierarchy --- use carefully.
|
|
*/
|
|
static nsView* FindFloatingViewContaining(nsView* aView, nsPoint aPt)
|
|
{
|
|
if (aView->GetVisibility() == nsViewVisibility_kHide)
|
|
// No need to look into descendants.
|
|
return nullptr;
|
|
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame) {
|
|
if (!frame->IsVisibleConsideringAncestors(nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) ||
|
|
!frame->PresContext()->PresShell()->IsActive()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsView* r = FindFloatingViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
if (aView->GetFloating() && aView->HasWidget() &&
|
|
aView->GetDimensions().Contains(aPt))
|
|
return aView;
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/*
|
|
* This finds the first view containing the given point in a postorder
|
|
* traversal of the view tree that contains the point, assuming that the
|
|
* point is not in a floating view. It assumes that only floating views
|
|
* extend outside the bounds of their parents.
|
|
*
|
|
* This methods should only be called if FindFloatingViewContaining
|
|
* returns null.
|
|
*/
|
|
static nsView* FindViewContaining(nsView* aView, nsPoint aPt)
|
|
{
|
|
if (!aView->GetDimensions().Contains(aPt) ||
|
|
aView->GetVisibility() == nsViewVisibility_kHide) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame) {
|
|
if (!frame->IsVisibleConsideringAncestors(nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) ||
|
|
!frame->PresContext()->PresShell()->IsActive()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsView* r = FindViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r)
|
|
return r;
|
|
}
|
|
|
|
return aView;
|
|
}
|
|
|
|
void
|
|
PresShell::ProcessSynthMouseMoveEvent(bool aFromScroll)
|
|
{
|
|
// If drag session has started, we shouldn't synthesize mousemove event.
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
if (dragSession) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
return;
|
|
}
|
|
|
|
// allow new event to be posted while handling this one only if the
|
|
// source of the event is a scroll (to prevent infinite reflow loops)
|
|
if (aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
|
|
nsView* rootView = mViewManager ? mViewManager->GetRootView() : nullptr;
|
|
if (mMouseLocation == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE) ||
|
|
!rootView || !rootView->HasWidget() || !mPresContext) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(mPresContext->IsRoot(), "Only a root pres shell should be here");
|
|
|
|
// Hold a ref to ourselves so DispatchEvent won't destroy us (since
|
|
// we need to access members after we call DispatchEvent).
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
printf("[ps=%p]synthesizing mouse move to (%d,%d)\n",
|
|
this, mMouseLocation.x, mMouseLocation.y);
|
|
#endif
|
|
|
|
int32_t APD = mPresContext->AppUnitsPerDevPixel();
|
|
|
|
// We need a widget to put in the event we are going to dispatch so we look
|
|
// for a view that has a widget and the mouse location is over. We first look
|
|
// for floating views, if there isn't one we use the root view. |view| holds
|
|
// that view.
|
|
nsView* view = nullptr;
|
|
|
|
// The appunits per devpixel ratio of |view|.
|
|
int32_t viewAPD;
|
|
|
|
// refPoint will be mMouseLocation relative to the widget of |view|, the
|
|
// widget we will put in the event we dispatch, in viewAPD appunits
|
|
nsPoint refpoint(0, 0);
|
|
|
|
// We always dispatch the event to the pres shell that contains the view that
|
|
// the mouse is over. pointVM is the VM of that pres shell.
|
|
nsViewManager *pointVM = nullptr;
|
|
|
|
// This could be a bit slow (traverses entire view hierarchy)
|
|
// but it's OK to do it once per synthetic mouse event
|
|
view = FindFloatingViewContaining(rootView, mMouseLocation);
|
|
if (!view) {
|
|
view = rootView;
|
|
nsView *pointView = FindViewContaining(rootView, mMouseLocation);
|
|
// pointView can be null in situations related to mouse capture
|
|
pointVM = (pointView ? pointView : view)->GetViewManager();
|
|
refpoint = mMouseLocation + rootView->ViewToWidgetOffset();
|
|
viewAPD = APD;
|
|
} else {
|
|
pointVM = view->GetViewManager();
|
|
nsIFrame* frame = view->GetFrame();
|
|
NS_ASSERTION(frame, "floating views can't be anonymous");
|
|
viewAPD = frame->PresContext()->AppUnitsPerDevPixel();
|
|
refpoint = mMouseLocation.ConvertAppUnits(APD, viewAPD);
|
|
refpoint -= view->GetOffsetTo(rootView);
|
|
refpoint += view->ViewToWidgetOffset();
|
|
}
|
|
NS_ASSERTION(view->GetWidget(), "view should have a widget here");
|
|
WidgetMouseEvent event(true, NS_MOUSE_MOVE, view->GetWidget(),
|
|
WidgetMouseEvent::eSynthesized);
|
|
event.refPoint = LayoutDeviceIntPoint::FromAppUnitsToNearest(refpoint, viewAPD);
|
|
event.time = PR_IntervalNow();
|
|
// XXX set event.modifiers ?
|
|
// XXX mnakano I think that we should get the latest information from widget.
|
|
|
|
nsCOMPtr<nsIPresShell> shell = pointVM->GetPresShell();
|
|
if (shell) {
|
|
shell->DispatchSynthMouseMove(&event, !aFromScroll);
|
|
}
|
|
|
|
if (!aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
}
|
|
|
|
/* static */ void
|
|
PresShell::MarkImagesInListVisible(const nsDisplayList& aList)
|
|
{
|
|
for (nsDisplayItem* item = aList.GetBottom(); item; item = item->GetAbove()) {
|
|
nsDisplayList* sublist = item->GetChildren();
|
|
if (sublist) {
|
|
MarkImagesInListVisible(*sublist);
|
|
continue;
|
|
}
|
|
nsIFrame* f = item->Frame();
|
|
// We could check the type of the display item, only a handful can hold an
|
|
// image loading content.
|
|
// dont bother nscomptr here, it is wasteful
|
|
nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(f->GetContent()));
|
|
if (content) {
|
|
// use the presshell containing the image
|
|
PresShell* presShell = static_cast<PresShell*>(f->PresContext()->PresShell());
|
|
uint32_t count = presShell->mVisibleImages.Count();
|
|
presShell->mVisibleImages.PutEntry(content);
|
|
if (presShell->mVisibleImages.Count() > count) {
|
|
// content was added to mVisibleImages, so we need to increment its visible count
|
|
content->IncrementVisibleCount();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static PLDHashOperator
|
|
RemoveAndStore(nsRefPtrHashKey<nsIImageLoadingContent>* aEntry, void* userArg)
|
|
{
|
|
nsTArray< nsRefPtr<nsIImageLoadingContent> >* array =
|
|
static_cast< nsTArray< nsRefPtr<nsIImageLoadingContent> >* >(userArg);
|
|
array->AppendElement(aEntry->GetKey());
|
|
return PL_DHASH_REMOVE;
|
|
}
|
|
|
|
void
|
|
PresShell::RebuildImageVisibility(const nsDisplayList& aList)
|
|
{
|
|
MOZ_ASSERT(!mImageVisibilityVisited, "already visited?");
|
|
mImageVisibilityVisited = true;
|
|
// Remove the entries of the mVisibleImages hashtable and put them in the
|
|
// beforeImageList array.
|
|
nsTArray< nsRefPtr<nsIImageLoadingContent> > beforeImageList;
|
|
beforeImageList.SetCapacity(mVisibleImages.Count());
|
|
mVisibleImages.EnumerateEntries(RemoveAndStore, &beforeImageList);
|
|
MarkImagesInListVisible(aList);
|
|
for (uint32_t i = 0; i < beforeImageList.Length(); ++i) {
|
|
beforeImageList[i]->DecrementVisibleCount();
|
|
}
|
|
}
|
|
|
|
/* static */ void
|
|
PresShell::ClearImageVisibilityVisited(nsView* aView, bool aClear)
|
|
{
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
if (aClear) {
|
|
PresShell* presShell = static_cast<PresShell*>(vm->GetPresShell());
|
|
if (!presShell->mImageVisibilityVisited) {
|
|
presShell->ClearVisibleImagesList();
|
|
}
|
|
presShell->mImageVisibilityVisited = false;
|
|
}
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
ClearImageVisibilityVisited(v, v->GetViewManager() != vm);
|
|
}
|
|
}
|
|
|
|
static PLDHashOperator
|
|
DecrementVisibleCount(nsRefPtrHashKey<nsIImageLoadingContent>* aEntry, void* userArg)
|
|
{
|
|
aEntry->GetKey()->DecrementVisibleCount();
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
void
|
|
PresShell::ClearVisibleImagesList()
|
|
{
|
|
mVisibleImages.EnumerateEntries(DecrementVisibleCount, nullptr);
|
|
mVisibleImages.Clear();
|
|
}
|
|
|
|
void
|
|
PresShell::UpdateImageVisibility()
|
|
{
|
|
MOZ_ASSERT(!mPresContext || mPresContext->IsRootContentDocument(),
|
|
"updating image visibility on a non-root content document?");
|
|
|
|
mUpdateImageVisibilityEvent.Revoke();
|
|
|
|
if (mHaveShutDown || mIsDestroying) {
|
|
return;
|
|
}
|
|
|
|
// call update on that frame
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
ClearVisibleImagesList();
|
|
return;
|
|
}
|
|
|
|
// We could walk the frame tree directly and skip creating a display list for
|
|
// better perf.
|
|
nsRect updateRect(nsPoint(0, 0), rootFrame->GetSize());
|
|
nsDisplayListBuilder builder(rootFrame, nsDisplayListBuilder::IMAGE_VISIBILITY, true);
|
|
builder.IgnorePaintSuppression();
|
|
builder.EnterPresShell(rootFrame, updateRect);
|
|
nsDisplayList list;
|
|
rootFrame->BuildDisplayListForStackingContext(&builder, updateRect, &list);
|
|
builder.LeavePresShell(rootFrame, updateRect);
|
|
|
|
RebuildImageVisibility(list);
|
|
|
|
ClearImageVisibilityVisited(rootFrame->GetView(), true);
|
|
|
|
list.DeleteAll();
|
|
}
|
|
|
|
bool
|
|
PresShell::AssumeAllImagesVisible()
|
|
{
|
|
static bool sImageVisibilityEnabled = true;
|
|
static bool sImageVisibilityPrefCached = false;
|
|
|
|
if (!sImageVisibilityPrefCached) {
|
|
Preferences::AddBoolVarCache(&sImageVisibilityEnabled,
|
|
"layout.imagevisibility.enabled", true);
|
|
sImageVisibilityPrefCached = true;
|
|
}
|
|
|
|
if (!sImageVisibilityEnabled || !mPresContext || !mDocument)
|
|
return true;
|
|
|
|
// We assume all images are visible in print, print preview, chrome, xul, and
|
|
// resource docs and don't keep track of them.
|
|
if (mPresContext->Type() == nsPresContext::eContext_PrintPreview ||
|
|
mPresContext->Type() == nsPresContext::eContext_Print ||
|
|
mPresContext->IsChrome() ||
|
|
mDocument->IsResourceDoc() ||
|
|
mDocument->IsXUL()) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
PresShell::ScheduleImageVisibilityUpdate()
|
|
{
|
|
if (AssumeAllImagesVisible())
|
|
return;
|
|
|
|
if (!mPresContext->IsRootContentDocument()) {
|
|
nsPresContext* presContext = mPresContext->GetToplevelContentDocumentPresContext();
|
|
if (!presContext)
|
|
return;
|
|
MOZ_ASSERT(presContext->IsRootContentDocument(),
|
|
"Didn't get a root prescontext from GetToplevelContentDocumentPresContext?");
|
|
presContext->PresShell()->ScheduleImageVisibilityUpdate();
|
|
return;
|
|
}
|
|
|
|
if (mHaveShutDown || mIsDestroying)
|
|
return;
|
|
|
|
if (mUpdateImageVisibilityEvent.IsPending())
|
|
return;
|
|
|
|
nsRefPtr<nsRunnableMethod<PresShell> > ev =
|
|
NS_NewRunnableMethod(this, &PresShell::UpdateImageVisibility);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mUpdateImageVisibilityEvent = ev;
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::EnsureImageInVisibleList(nsIImageLoadingContent* aImage)
|
|
{
|
|
if (AssumeAllImagesVisible()) {
|
|
aImage->IncrementVisibleCount();
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// if it has a frame make sure its in this presshell
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aImage);
|
|
if (content) {
|
|
PresShell* shell = static_cast<PresShell*>(content->OwnerDoc()->GetShell());
|
|
MOZ_ASSERT(!shell || shell == this, "wrong shell");
|
|
}
|
|
#endif
|
|
|
|
if (!mVisibleImages.Contains(aImage)) {
|
|
mVisibleImages.PutEntry(aImage);
|
|
aImage->IncrementVisibleCount();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::RemoveImageFromVisibleList(nsIImageLoadingContent* aImage)
|
|
{
|
|
#ifdef DEBUG
|
|
// if it has a frame make sure its in this presshell
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(aImage);
|
|
if (content) {
|
|
PresShell* shell = static_cast<PresShell*>(content->OwnerDoc()->GetShell());
|
|
MOZ_ASSERT(!shell || shell == this, "wrong shell");
|
|
}
|
|
#endif
|
|
|
|
if (AssumeAllImagesVisible()) {
|
|
MOZ_ASSERT(mVisibleImages.Count() == 0, "shouldn't have any images in the table");
|
|
return;
|
|
}
|
|
|
|
uint32_t count = mVisibleImages.Count();
|
|
mVisibleImages.RemoveEntry(aImage);
|
|
if (mVisibleImages.Count() < count) {
|
|
// aImage was in the hashtable, so we need to decrement its visible count
|
|
aImage->DecrementVisibleCount();
|
|
}
|
|
}
|
|
|
|
class nsAutoNotifyDidPaint
|
|
{
|
|
public:
|
|
nsAutoNotifyDidPaint(PresShell* aShell, uint32_t aFlags)
|
|
: mShell(aShell), mFlags(aFlags)
|
|
{
|
|
}
|
|
~nsAutoNotifyDidPaint()
|
|
{
|
|
mShell->GetPresContext()->NotifyDidPaintForSubtree(mFlags);
|
|
}
|
|
|
|
private:
|
|
PresShell* mShell;
|
|
uint32_t mFlags;
|
|
};
|
|
|
|
class AutoUpdateHitRegion
|
|
{
|
|
public:
|
|
AutoUpdateHitRegion(PresShell* aShell, nsIFrame* aFrame)
|
|
: mShell(aShell), mFrame(aFrame)
|
|
{
|
|
}
|
|
~AutoUpdateHitRegion()
|
|
{
|
|
if (XRE_GetProcessType() != GeckoProcessType_Content ||
|
|
!mFrame || !mShell) {
|
|
return;
|
|
}
|
|
TabChild* tabChild = TabChild::GetFrom(mShell);
|
|
if (!tabChild || !tabChild->GetUpdateHitRegion()) {
|
|
return;
|
|
}
|
|
nsRegion region;
|
|
nsDisplayListBuilder builder(mFrame,
|
|
nsDisplayListBuilder::EVENT_DELIVERY,
|
|
/* aBuildCert= */ false);
|
|
nsDisplayList list;
|
|
nsAutoTArray<nsIFrame*, 100> outFrames;
|
|
nsDisplayItem::HitTestState hitTestState;
|
|
nsRect bounds = mShell->GetPresContext()->GetVisibleArea();
|
|
builder.EnterPresShell(mFrame, bounds);
|
|
mFrame->BuildDisplayListForStackingContext(&builder, bounds, &list);
|
|
builder.LeavePresShell(mFrame, bounds);
|
|
list.HitTest(&builder, bounds, &hitTestState, &outFrames);
|
|
list.DeleteAll();
|
|
for (int32_t i = outFrames.Length() - 1; i >= 0; --i) {
|
|
region.Or(region, nsLayoutUtils::TransformFrameRectToAncestor(
|
|
outFrames[i], nsRect(nsPoint(0, 0), outFrames[i]->GetSize()), mFrame));
|
|
}
|
|
tabChild->UpdateHitRegion(region);
|
|
}
|
|
private:
|
|
PresShell* mShell;
|
|
nsIFrame* mFrame;
|
|
};
|
|
|
|
void
|
|
PresShell::Paint(nsView* aViewToPaint,
|
|
const nsRegion& aDirtyRegion,
|
|
uint32_t aFlags)
|
|
{
|
|
PROFILER_LABEL("Paint", "PresShell::Paint");
|
|
NS_ASSERTION(!mIsDestroying, "painting a destroyed PresShell");
|
|
NS_ASSERTION(aViewToPaint, "null view");
|
|
|
|
MOZ_ASSERT(!mImageVisibilityVisited, "should have been cleared");
|
|
|
|
if (!mIsActive || mIsZombie) {
|
|
return;
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(presContext, Paint);
|
|
|
|
nsIFrame* frame = aViewToPaint->GetFrame();
|
|
|
|
bool isRetainingManager;
|
|
LayerManager* layerManager =
|
|
aViewToPaint->GetWidget()->GetLayerManager(&isRetainingManager);
|
|
NS_ASSERTION(layerManager, "Must be in paint event");
|
|
bool shouldInvalidate = layerManager->NeedsWidgetInvalidation();
|
|
|
|
uint32_t didPaintFlags = aFlags;
|
|
if (!shouldInvalidate) {
|
|
didPaintFlags |= PAINT_COMPOSITE;
|
|
}
|
|
nsAutoNotifyDidPaint notifyDidPaint(this, didPaintFlags);
|
|
AutoUpdateHitRegion updateHitRegion(this, frame);
|
|
|
|
// Whether or not we should set first paint when painting is
|
|
// suppressed is debatable. For now we'll do it because
|
|
// B2G relies on first paint to configure the viewport and
|
|
// we only want to do that when we have real content to paint.
|
|
// See Bug 798245
|
|
if (mIsFirstPaint && !mPaintingSuppressed) {
|
|
layerManager->SetIsFirstPaint();
|
|
mIsFirstPaint = false;
|
|
}
|
|
|
|
if (frame && isRetainingManager) {
|
|
// Try to do an empty transaction, if the frame tree does not
|
|
// need to be updated. Do not try to do an empty transaction on
|
|
// a non-retained layer manager (like the BasicLayerManager that
|
|
// draws the window title bar on Mac), because a) it won't work
|
|
// and b) below we don't want to clear NS_FRAME_UPDATE_LAYER_TREE,
|
|
// that will cause us to forget to update the real layer manager!
|
|
if (!(aFlags & PAINT_LAYERS)) {
|
|
layerManager->BeginTransaction();
|
|
if (layerManager->EndEmptyTransaction()) {
|
|
return;
|
|
}
|
|
NS_WARNING("Must complete empty transaction when compositing!");
|
|
} else {
|
|
layerManager->BeginTransaction();
|
|
}
|
|
|
|
if (!(frame->GetStateBits() & NS_FRAME_UPDATE_LAYER_TREE)) {
|
|
NotifySubDocInvalidationFunc computeInvalidFunc =
|
|
presContext->MayHavePaintEventListenerInSubDocument() ? nsPresContext::NotifySubDocInvalidation : 0;
|
|
bool computeInvalidRect = computeInvalidFunc ||
|
|
(layerManager->GetBackendType() == LAYERS_BASIC);
|
|
|
|
nsAutoPtr<LayerProperties> props(computeInvalidRect ?
|
|
LayerProperties::CloneFrom(layerManager->GetRoot()) :
|
|
nullptr);
|
|
|
|
if (layerManager->EndEmptyTransaction((aFlags & PAINT_COMPOSITE) ?
|
|
LayerManager::END_DEFAULT : LayerManager::END_NO_COMPOSITE)) {
|
|
nsIntRegion invalid;
|
|
if (props) {
|
|
invalid = props->ComputeDifferences(layerManager->GetRoot(), computeInvalidFunc);
|
|
} else {
|
|
LayerProperties::ClearInvalidations(layerManager->GetRoot());
|
|
}
|
|
if (props) {
|
|
if (!invalid.IsEmpty()) {
|
|
nsIntRect bounds = invalid.GetBounds();
|
|
nsRect rect(presContext->DevPixelsToAppUnits(bounds.x),
|
|
presContext->DevPixelsToAppUnits(bounds.y),
|
|
presContext->DevPixelsToAppUnits(bounds.width),
|
|
presContext->DevPixelsToAppUnits(bounds.height));
|
|
if (shouldInvalidate) {
|
|
aViewToPaint->GetViewManager()->InvalidateViewNoSuppression(aViewToPaint, rect);
|
|
}
|
|
presContext->NotifyInvalidation(bounds, 0);
|
|
}
|
|
} else if (shouldInvalidate) {
|
|
aViewToPaint->GetViewManager()->InvalidateView(aViewToPaint);
|
|
}
|
|
|
|
frame->UpdatePaintCountForPaintedPresShells();
|
|
return;
|
|
}
|
|
}
|
|
frame->RemoveStateBits(NS_FRAME_UPDATE_LAYER_TREE);
|
|
} else {
|
|
layerManager->BeginTransaction();
|
|
}
|
|
if (frame) {
|
|
frame->ClearPresShellsFromLastPaint();
|
|
}
|
|
|
|
nscolor bgcolor = ComputeBackstopColor(aViewToPaint);
|
|
uint32_t flags = nsLayoutUtils::PAINT_WIDGET_LAYERS | nsLayoutUtils::PAINT_EXISTING_TRANSACTION;
|
|
if (!(aFlags & PAINT_COMPOSITE)) {
|
|
flags |= nsLayoutUtils::PAINT_NO_COMPOSITE;
|
|
}
|
|
|
|
if (frame) {
|
|
// We can paint directly into the widget using its layer manager.
|
|
nsLayoutUtils::PaintFrame(nullptr, frame, aDirtyRegion, bgcolor, flags);
|
|
return;
|
|
}
|
|
|
|
nsRefPtr<ColorLayer> root = layerManager->CreateColorLayer();
|
|
if (root) {
|
|
nsPresContext* pc = GetPresContext();
|
|
nsIntRect bounds =
|
|
pc->GetVisibleArea().ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
bgcolor = NS_ComposeColors(bgcolor, mCanvasBackgroundColor);
|
|
root->SetColor(bgcolor);
|
|
root->SetVisibleRegion(bounds);
|
|
layerManager->SetRoot(root);
|
|
}
|
|
layerManager->EndTransaction(nullptr, nullptr, (aFlags & PAINT_COMPOSITE) ?
|
|
LayerManager::END_DEFAULT : LayerManager::END_NO_COMPOSITE);
|
|
}
|
|
|
|
// static
|
|
void
|
|
nsIPresShell::SetCapturingContent(nsIContent* aContent, uint8_t aFlags)
|
|
{
|
|
// If capture was set for pointer lock, don't unlock unless we are coming
|
|
// out of pointer lock explicitly.
|
|
if (!aContent && gCaptureInfo.mPointerLock &&
|
|
!(aFlags & CAPTURE_POINTERLOCK)) {
|
|
return;
|
|
}
|
|
|
|
NS_IF_RELEASE(gCaptureInfo.mContent);
|
|
|
|
// only set capturing content if allowed or the CAPTURE_IGNOREALLOWED or
|
|
// CAPTURE_POINTERLOCK flags are used.
|
|
if ((aFlags & CAPTURE_IGNOREALLOWED) || gCaptureInfo.mAllowed ||
|
|
(aFlags & CAPTURE_POINTERLOCK)) {
|
|
if (aContent) {
|
|
NS_ADDREF(gCaptureInfo.mContent = aContent);
|
|
}
|
|
// CAPTURE_POINTERLOCK is the same as CAPTURE_RETARGETTOELEMENT & CAPTURE_IGNOREALLOWED
|
|
gCaptureInfo.mRetargetToElement = ((aFlags & CAPTURE_RETARGETTOELEMENT) != 0) ||
|
|
((aFlags & CAPTURE_POINTERLOCK) != 0);
|
|
gCaptureInfo.mPreventDrag = (aFlags & CAPTURE_PREVENTDRAG) != 0;
|
|
gCaptureInfo.mPointerLock = (aFlags & CAPTURE_POINTERLOCK) != 0;
|
|
}
|
|
}
|
|
|
|
nsIContent*
|
|
PresShell::GetCurrentEventContent()
|
|
{
|
|
if (mCurrentEventContent &&
|
|
mCurrentEventContent->GetCurrentDoc() != mDocument) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
return mCurrentEventContent;
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetCurrentEventFrame()
|
|
{
|
|
if (MOZ_UNLIKELY(mIsDestroying)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// GetCurrentEventContent() makes sure the content is still in the
|
|
// same document that this pres shell belongs to. If not, then the
|
|
// frame shouldn't get an event, nor should we even assume its safe
|
|
// to try and find the frame.
|
|
nsIContent* content = GetCurrentEventContent();
|
|
if (!mCurrentEventFrame && content) {
|
|
mCurrentEventFrame = content->GetPrimaryFrame();
|
|
MOZ_ASSERT(!mCurrentEventFrame ||
|
|
mCurrentEventFrame->PresContext()->GetPresShell() == this);
|
|
}
|
|
return mCurrentEventFrame;
|
|
}
|
|
|
|
nsIFrame*
|
|
PresShell::GetEventTargetFrame()
|
|
{
|
|
return GetCurrentEventFrame();
|
|
}
|
|
|
|
already_AddRefed<nsIContent>
|
|
PresShell::GetEventTargetContent(WidgetEvent* aEvent)
|
|
{
|
|
nsCOMPtr<nsIContent> content = GetCurrentEventContent();
|
|
if (!content) {
|
|
nsIFrame* currentEventFrame = GetCurrentEventFrame();
|
|
if (currentEventFrame) {
|
|
currentEventFrame->GetContentForEvent(aEvent, getter_AddRefs(content));
|
|
NS_ASSERTION(!content || content->GetCurrentDoc() == mDocument,
|
|
"handing out content from a different doc");
|
|
}
|
|
}
|
|
return content.forget();
|
|
}
|
|
|
|
void
|
|
PresShell::PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent)
|
|
{
|
|
if (mCurrentEventFrame || mCurrentEventContent) {
|
|
mCurrentEventFrameStack.InsertElementAt(0, mCurrentEventFrame);
|
|
mCurrentEventContentStack.InsertObjectAt(mCurrentEventContent, 0);
|
|
}
|
|
mCurrentEventFrame = aFrame;
|
|
mCurrentEventContent = aContent;
|
|
}
|
|
|
|
void
|
|
PresShell::PopCurrentEventInfo()
|
|
{
|
|
mCurrentEventFrame = nullptr;
|
|
mCurrentEventContent = nullptr;
|
|
|
|
if (0 != mCurrentEventFrameStack.Length()) {
|
|
mCurrentEventFrame = mCurrentEventFrameStack.ElementAt(0);
|
|
mCurrentEventFrameStack.RemoveElementAt(0);
|
|
mCurrentEventContent = mCurrentEventContentStack.ObjectAt(0);
|
|
mCurrentEventContentStack.RemoveObjectAt(0);
|
|
|
|
// Don't use it if it has moved to a different document.
|
|
if (mCurrentEventContent &&
|
|
mCurrentEventContent->GetCurrentDoc() != mDocument) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool PresShell::InZombieDocument(nsIContent *aContent)
|
|
{
|
|
// If a content node points to a null document, or the document is not
|
|
// attached to a window, then it is possibly in a zombie document,
|
|
// about to be replaced by a newly loading document.
|
|
// Such documents cannot handle DOM events.
|
|
// It might actually be in a node not attached to any document,
|
|
// in which case there is not parent presshell to retarget it to.
|
|
nsIDocument *doc = aContent->GetDocument();
|
|
return !doc || !doc->GetWindow();
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindow>
|
|
PresShell::GetRootWindow()
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> window =
|
|
do_QueryInterface(mDocument->GetWindow());
|
|
if (window) {
|
|
nsCOMPtr<nsPIDOMWindow> rootWindow = window->GetPrivateRoot();
|
|
NS_ASSERTION(rootWindow, "nsPIDOMWindow::GetPrivateRoot() returns NULL");
|
|
return rootWindow.forget();
|
|
}
|
|
|
|
// If we don't have DOM window, we're zombie, we should find the root window
|
|
// with our parent shell.
|
|
nsCOMPtr<nsIPresShell> parent = GetParentPresShell();
|
|
NS_ENSURE_TRUE(parent, nullptr);
|
|
return parent->GetRootWindow();
|
|
}
|
|
|
|
already_AddRefed<nsIPresShell>
|
|
PresShell::GetParentPresShell()
|
|
{
|
|
NS_ENSURE_TRUE(mPresContext, nullptr);
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (!container) {
|
|
container = do_QueryReferent(mForwardingContainer);
|
|
}
|
|
|
|
// Now, find the parent pres shell and send the event there
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem = do_QueryInterface(container);
|
|
// Might have gone away, or never been around to start with
|
|
NS_ENSURE_TRUE(treeItem, nullptr);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentTreeItem;
|
|
treeItem->GetParent(getter_AddRefs(parentTreeItem));
|
|
nsCOMPtr<nsIDocShell> parentDocShell = do_QueryInterface(parentTreeItem);
|
|
NS_ENSURE_TRUE(parentDocShell && treeItem != parentTreeItem, nullptr);
|
|
|
|
nsCOMPtr<nsIPresShell> parentPresShell = parentDocShell->GetPresShell();
|
|
return parentPresShell.forget();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RetargetEventToParent(WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
// Send this events straight up to the parent pres shell.
|
|
// We do this for keystroke events in zombie documents or if either a frame
|
|
// or a root content is not present.
|
|
// That way at least the UI key bindings can work.
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
nsCOMPtr<nsIPresShell> parentPresShell = GetParentPresShell();
|
|
NS_ENSURE_TRUE(parentPresShell, NS_ERROR_FAILURE);
|
|
|
|
// Fake the event as though it's from the parent pres shell's root frame.
|
|
return parentPresShell->HandleEvent(parentPresShell->GetRootFrame(), aEvent, true, aEventStatus);
|
|
}
|
|
|
|
void
|
|
PresShell::DisableNonTestMouseEvents(bool aDisable)
|
|
{
|
|
sDisableNonTestMouseEvents = aDisable;
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindow>
|
|
PresShell::GetFocusedDOMWindowInOurWindow()
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> rootWindow = GetRootWindow();
|
|
NS_ENSURE_TRUE(rootWindow, nullptr);
|
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
|
nsFocusManager::GetFocusedDescendant(rootWindow, true,
|
|
getter_AddRefs(focusedWindow));
|
|
return focusedWindow.forget();
|
|
}
|
|
|
|
void
|
|
PresShell::RecordMouseLocation(WidgetGUIEvent* aEvent)
|
|
{
|
|
if (!mPresContext)
|
|
return;
|
|
|
|
if (!mPresContext->IsRoot()) {
|
|
PresShell* rootPresShell = GetRootPresShell();
|
|
if (rootPresShell) {
|
|
rootPresShell->RecordMouseLocation(aEvent);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ((aEvent->message == NS_MOUSE_MOVE &&
|
|
aEvent->AsMouseEvent()->reason == WidgetMouseEvent::eReal) ||
|
|
aEvent->message == NS_MOUSE_ENTER ||
|
|
aEvent->message == NS_MOUSE_BUTTON_DOWN ||
|
|
aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
mMouseLocation = nsLayoutUtils::TranslateWidgetToView(mPresContext,
|
|
aEvent->widget, LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint),
|
|
rootView);
|
|
} else {
|
|
mMouseLocation =
|
|
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
|
|
}
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
if (aEvent->message == NS_MOUSE_ENTER)
|
|
printf("[ps=%p]got mouse enter for %p\n",
|
|
this, aEvent->widget);
|
|
printf("[ps=%p]setting mouse location to (%d,%d)\n",
|
|
this, mMouseLocation.x, mMouseLocation.y);
|
|
#endif
|
|
if (aEvent->message == NS_MOUSE_ENTER)
|
|
SynthesizeMouseMove(false);
|
|
} else if (aEvent->message == NS_MOUSE_EXIT) {
|
|
// Although we only care about the mouse moving into an area for which this
|
|
// pres shell doesn't receive mouse move events, we don't check which widget
|
|
// the mouse exit was for since this seems to vary by platform. Hopefully
|
|
// this won't matter at all since we'll get the mouse move or enter after
|
|
// the mouse exit when the mouse moves from one of our widgets into another.
|
|
mMouseLocation = nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
printf("[ps=%p]got mouse exit for %p\n",
|
|
this, aEvent->widget);
|
|
printf("[ps=%p]clearing mouse location\n",
|
|
this);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void
|
|
EvictTouchPoint(nsRefPtr<dom::Touch>& aTouch)
|
|
{
|
|
nsIWidget *widget = nullptr;
|
|
// is there an easier/better way to dig out the widget?
|
|
nsCOMPtr<nsINode> node(do_QueryInterface(aTouch->mTarget));
|
|
if (!node) {
|
|
return;
|
|
}
|
|
nsIDocument* doc = node->GetCurrentDoc();
|
|
if (!doc) {
|
|
return;
|
|
}
|
|
nsIPresShell *presShell = doc->GetShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
nsIFrame* frame = presShell->GetRootFrame();
|
|
if (!frame) {
|
|
return;
|
|
}
|
|
nsPoint pt(aTouch->mRefPoint.x, aTouch->mRefPoint.y);
|
|
widget = frame->GetView()->GetNearestWidget(&pt);
|
|
|
|
if (!widget) {
|
|
return;
|
|
}
|
|
|
|
WidgetTouchEvent event(true, NS_TOUCH_END, widget);
|
|
event.widget = widget;
|
|
event.time = PR_IntervalNow();
|
|
event.touches.AppendElement(aTouch);
|
|
|
|
nsEventStatus status;
|
|
widget->DispatchEvent(&event, status);
|
|
}
|
|
|
|
static PLDHashOperator
|
|
AppendToTouchList(const uint32_t& aKey, nsRefPtr<dom::Touch>& aData, void *aTouchList)
|
|
{
|
|
nsTArray< nsRefPtr<dom::Touch> >* touches =
|
|
static_cast<nsTArray< nsRefPtr<dom::Touch> >*>(aTouchList);
|
|
aData->mChanged = false;
|
|
touches->AppendElement(aData);
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
static PLDHashOperator
|
|
FindAnyTarget(const uint32_t& aKey, nsRefPtr<dom::Touch>& aData,
|
|
void* aAnyTarget)
|
|
{
|
|
if (aData) {
|
|
dom::EventTarget* target = aData->Target();
|
|
if (target) {
|
|
nsCOMPtr<nsIContent>* content =
|
|
static_cast<nsCOMPtr<nsIContent>*>(aAnyTarget);
|
|
*content = do_QueryInterface(target);
|
|
return PL_DHASH_STOP;
|
|
}
|
|
}
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
nsIFrame* GetNearestFrameContainingPresShell(nsIPresShell* aPresShell)
|
|
{
|
|
nsView* view = aPresShell->GetViewManager()->GetRootView();
|
|
while (view && !view->GetFrame()) {
|
|
view = view->GetParent();
|
|
}
|
|
|
|
nsIFrame* frame = nullptr;
|
|
if (view) {
|
|
frame = view->GetFrame();
|
|
}
|
|
|
|
return frame;
|
|
}
|
|
|
|
static bool
|
|
FlushThrottledStyles(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell && shell->IsVisible()) {
|
|
nsPresContext* presContext = shell->GetPresContext();
|
|
if (presContext) {
|
|
presContext->TransitionManager()->UpdateAllThrottledStyles();
|
|
presContext->AnimationManager()->UpdateAllThrottledStyles();
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEvent(nsIFrame* aFrame,
|
|
WidgetGUIEvent* aEvent,
|
|
bool aDontRetargetEvents,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
NS_ASSERTION(aFrame, "null frame");
|
|
|
|
if (mIsDestroying ||
|
|
(sDisableNonTestMouseEvents && !aEvent->mFlags.mIsSynthesizedForTests &&
|
|
aEvent->HasMouseEventMessage())) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RecordMouseLocation(aEvent);
|
|
|
|
if (!nsContentUtils::IsSafeToRunScript())
|
|
return NS_OK;
|
|
|
|
nsIContent* capturingContent =
|
|
(aEvent->HasMouseEventMessage() ||
|
|
aEvent->eventStructType == NS_WHEEL_EVENT ? GetCapturingContent() :
|
|
nullptr);
|
|
|
|
nsCOMPtr<nsIDocument> retargetEventDoc;
|
|
if (!aDontRetargetEvents) {
|
|
// key and IME related events should not cross top level window boundary.
|
|
// Basically, such input events should be fired only on focused widget.
|
|
// However, some IMEs might need to clean up composition after focused
|
|
// window is deactivated. And also some tests on MozMill want to test key
|
|
// handling on deactivated window because MozMill window can be activated
|
|
// during tests. So, there is no merit the events should be redirected to
|
|
// active window. So, the events should be handled on the last focused
|
|
// content in the last focused DOM window in same top level window.
|
|
// Note, if no DOM window has been focused yet, we can discard the events.
|
|
if (aEvent->IsTargetedAtFocusedWindow()) {
|
|
nsCOMPtr<nsPIDOMWindow> window = GetFocusedDOMWindowInOurWindow();
|
|
// No DOM window in same top level window has not been focused yet,
|
|
// discard the events.
|
|
if (!window) {
|
|
return NS_OK;
|
|
}
|
|
|
|
retargetEventDoc = window->GetExtantDoc();
|
|
if (!retargetEventDoc)
|
|
return NS_OK;
|
|
} else if (capturingContent) {
|
|
// if the mouse is being captured then retarget the mouse event at the
|
|
// document that is being captured.
|
|
retargetEventDoc = capturingContent->GetCurrentDoc();
|
|
#ifdef ANDROID
|
|
} else if (aEvent->eventStructType == NS_TOUCH_EVENT) {
|
|
retargetEventDoc = GetTouchEventTargetDocument();
|
|
#endif
|
|
}
|
|
|
|
if (retargetEventDoc) {
|
|
nsCOMPtr<nsIPresShell> presShell = retargetEventDoc->GetShell();
|
|
if (!presShell)
|
|
return NS_OK;
|
|
|
|
if (presShell != this) {
|
|
nsIFrame* frame = presShell->GetRootFrame();
|
|
if (!frame) {
|
|
if (aEvent->message == NS_QUERY_TEXT_CONTENT ||
|
|
aEvent->IsContentCommandEvent()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
frame = GetNearestFrameContainingPresShell(presShell);
|
|
}
|
|
|
|
if (!frame)
|
|
return NS_OK;
|
|
|
|
nsCOMPtr<nsIPresShell> shell = frame->PresContext()->GetPresShell();
|
|
return shell->HandleEvent(frame, aEvent, true, aEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aEvent->eventStructType == NS_KEY_EVENT &&
|
|
mDocument && mDocument->EventHandlingSuppressed()) {
|
|
if (aEvent->message == NS_KEY_DOWN) {
|
|
mNoDelayedKeyEvents = true;
|
|
} else if (!mNoDelayedKeyEvents) {
|
|
nsDelayedEvent* event =
|
|
new nsDelayedKeyEvent(aEvent->AsKeyboardEvent());
|
|
if (!mDelayedEvents.AppendElement(event)) {
|
|
delete event;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame* frame = aFrame;
|
|
|
|
bool dispatchUsingCoordinates = aEvent->IsUsingCoordinates();
|
|
if (dispatchUsingCoordinates) {
|
|
if (nsLayoutUtils::AreAsyncAnimationsEnabled() && mDocument) {
|
|
if (aEvent->eventStructType == NS_TOUCH_EVENT) {
|
|
nsIDocument::UnlockPointer();
|
|
}
|
|
|
|
{ // scope for scriptBlocker.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
GetRootPresShell()->GetDocument()->
|
|
EnumerateSubDocuments(FlushThrottledStyles, nullptr);
|
|
}
|
|
frame = GetNearestFrameContainingPresShell(this);
|
|
}
|
|
|
|
NS_WARN_IF_FALSE(frame, "Nothing to handle this event!");
|
|
if (!frame)
|
|
return NS_OK;
|
|
|
|
nsPresContext* framePresContext = frame->PresContext();
|
|
nsPresContext* rootPresContext = framePresContext->GetRootPresContext();
|
|
NS_ASSERTION(rootPresContext == mPresContext->GetRootPresContext(),
|
|
"How did we end up outside the connected prescontext/viewmanager hierarchy?");
|
|
// If we aren't starting our event dispatch from the root frame of the root prescontext,
|
|
// then someone must be capturing the mouse. In that case we don't want to search the popup
|
|
// list.
|
|
if (framePresContext == rootPresContext &&
|
|
frame == mFrameConstructor->GetRootFrame()) {
|
|
nsIFrame* popupFrame =
|
|
nsLayoutUtils::GetPopupFrameForEventCoordinates(rootPresContext, aEvent);
|
|
// If the popupFrame is an ancestor of the 'frame', the frame should
|
|
// handle the event, otherwise, the popup should handle it.
|
|
if (popupFrame &&
|
|
!nsContentUtils::ContentIsCrossDocDescendantOf(
|
|
framePresContext->GetPresShell()->GetDocument(),
|
|
popupFrame->GetContent())) {
|
|
frame = popupFrame;
|
|
}
|
|
}
|
|
|
|
bool captureRetarget = false;
|
|
if (capturingContent) {
|
|
// If a capture is active, determine if the docshell is visible. If not,
|
|
// clear the capture and target the mouse event normally instead. This
|
|
// would occur if the mouse button is held down while a tab change occurs.
|
|
// If the docshell is visible, look for a scrolling container.
|
|
bool vis;
|
|
nsCOMPtr<nsISupports> supports = mPresContext->GetContainer();
|
|
nsCOMPtr<nsIBaseWindow> baseWin(do_QueryInterface(supports));
|
|
if (baseWin && NS_SUCCEEDED(baseWin->GetVisibility(&vis)) && vis) {
|
|
captureRetarget = gCaptureInfo.mRetargetToElement;
|
|
if (!captureRetarget) {
|
|
// A check was already done above to ensure that capturingContent is
|
|
// in this presshell.
|
|
NS_ASSERTION(capturingContent->GetCurrentDoc() == GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame* captureFrame = capturingContent->GetPrimaryFrame();
|
|
if (captureFrame) {
|
|
if (capturingContent->Tag() == nsGkAtoms::select &&
|
|
capturingContent->IsHTML()) {
|
|
// a dropdown <select> has a child in its selectPopupList and we should
|
|
// capture on that instead.
|
|
nsIFrame* childFrame = captureFrame->GetChildList(nsIFrame::kSelectPopupList).FirstChild();
|
|
if (childFrame) {
|
|
captureFrame = childFrame;
|
|
}
|
|
}
|
|
|
|
// scrollable frames should use the scrolling container as
|
|
// the root instead of the document
|
|
nsIScrollableFrame* scrollFrame = do_QueryFrame(captureFrame);
|
|
if (scrollFrame) {
|
|
frame = scrollFrame->GetScrolledFrame();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
ClearMouseCapture(nullptr);
|
|
capturingContent = nullptr;
|
|
}
|
|
}
|
|
|
|
// all touch events except for touchstart use a captured target
|
|
if (aEvent->eventStructType == NS_TOUCH_EVENT &&
|
|
aEvent->message != NS_TOUCH_START) {
|
|
captureRetarget = true;
|
|
}
|
|
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
bool isWindowLevelMouseExit = (aEvent->message == NS_MOUSE_EXIT) &&
|
|
(mouseEvent && mouseEvent->exit == WidgetMouseEvent::eTopLevel);
|
|
|
|
// Get the frame at the event point. However, don't do this if we're
|
|
// capturing and retargeting the event because the captured frame will
|
|
// be used instead below. Also keep using the root frame if we're dealing
|
|
// with a window-level mouse exit event since we want to start sending
|
|
// mouse out events at the root EventStateManager.
|
|
if (!captureRetarget && !isWindowLevelMouseExit) {
|
|
nsPoint eventPoint;
|
|
uint32_t flags = 0;
|
|
if (aEvent->message == NS_TOUCH_START) {
|
|
flags |= INPUT_IGNORE_ROOT_SCROLL_FRAME;
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
// if this is a continuing session, ensure that all these events are
|
|
// in the same document by taking the target of the events already in
|
|
// the capture list
|
|
nsCOMPtr<nsIContent> anyTarget;
|
|
if (gCaptureTouchList->Count() > 0) {
|
|
gCaptureTouchList->Enumerate(&FindAnyTarget, &anyTarget);
|
|
} else {
|
|
gPreventMouseEvents = false;
|
|
}
|
|
|
|
for (int32_t i = touchEvent->touches.Length(); i; ) {
|
|
--i;
|
|
dom::Touch* touch = touchEvent->touches[i];
|
|
|
|
int32_t id = touch->Identifier();
|
|
if (!gCaptureTouchList->Get(id, nullptr)) {
|
|
// find the target for this touch
|
|
eventPoint = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
|
|
touch->mRefPoint,
|
|
frame);
|
|
nsIFrame* target = FindFrameTargetedByInputEvent(aEvent,
|
|
frame,
|
|
eventPoint,
|
|
flags);
|
|
if (target && !anyTarget) {
|
|
target->GetContentForEvent(aEvent, getter_AddRefs(anyTarget));
|
|
while (anyTarget && !anyTarget->IsElement()) {
|
|
anyTarget = anyTarget->GetParent();
|
|
}
|
|
touch->SetTarget(anyTarget);
|
|
} else {
|
|
nsIFrame* newTargetFrame = nullptr;
|
|
for (nsIFrame* f = target; f;
|
|
f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {
|
|
if (f->PresContext()->Document() == anyTarget->OwnerDoc()) {
|
|
newTargetFrame = f;
|
|
break;
|
|
}
|
|
// We must be in a subdocument so jump directly to the root frame.
|
|
// GetParentOrPlaceholderForCrossDoc gets called immediately to
|
|
// jump up to the containing document.
|
|
f = f->PresContext()->GetPresShell()->GetRootFrame();
|
|
}
|
|
|
|
// if we couldn't find a target frame in the same document as
|
|
// anyTarget, remove the touch from the capture touch list, as
|
|
// well as the event->touches array. touchmove events that aren't
|
|
// in the captured touch list will be discarded
|
|
if (!newTargetFrame) {
|
|
touchEvent->touches.RemoveElementAt(i);
|
|
} else {
|
|
target = newTargetFrame;
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
target->GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
while (targetContent && !targetContent->IsElement()) {
|
|
targetContent = targetContent->GetParent();
|
|
}
|
|
touch->SetTarget(targetContent);
|
|
}
|
|
}
|
|
if (target) {
|
|
frame = target;
|
|
}
|
|
} else {
|
|
// This touch is an old touch, we need to ensure that is not
|
|
// marked as changed and set its target correctly
|
|
touch->mChanged = false;
|
|
int32_t id = touch->Identifier();
|
|
|
|
nsRefPtr<dom::Touch> oldTouch = gCaptureTouchList->GetWeak(id);
|
|
if (oldTouch) {
|
|
touch->SetTarget(oldTouch->mTarget);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
eventPoint = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, frame);
|
|
}
|
|
if (mouseEvent && mouseEvent->eventStructType == NS_MOUSE_EVENT &&
|
|
mouseEvent->ignoreRootScrollFrame) {
|
|
flags |= INPUT_IGNORE_ROOT_SCROLL_FRAME;
|
|
}
|
|
nsIFrame* target =
|
|
FindFrameTargetedByInputEvent(aEvent, frame, eventPoint, flags);
|
|
if (target) {
|
|
frame = target;
|
|
}
|
|
}
|
|
|
|
// if a node is capturing the mouse, check if the event needs to be
|
|
// retargeted at the capturing content instead. This will be the case when
|
|
// capture retargeting is being used, no frame was found or the frame's
|
|
// content is not a descendant of the capturing content.
|
|
if (capturingContent &&
|
|
(gCaptureInfo.mRetargetToElement || !frame->GetContent() ||
|
|
!nsContentUtils::ContentIsCrossDocDescendantOf(frame->GetContent(),
|
|
capturingContent))) {
|
|
// A check was already done above to ensure that capturingContent is
|
|
// in this presshell.
|
|
NS_ASSERTION(capturingContent->GetCurrentDoc() == GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame* capturingFrame = capturingContent->GetPrimaryFrame();
|
|
if (capturingFrame) {
|
|
frame = capturingFrame;
|
|
}
|
|
}
|
|
|
|
// Suppress mouse event if it's being targeted at an element inside
|
|
// a document which needs events suppressed
|
|
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
|
|
frame->PresContext()->Document()->EventHandlingSuppressed()) {
|
|
if (aEvent->message == NS_MOUSE_BUTTON_DOWN) {
|
|
mNoDelayedMouseEvents = true;
|
|
} else if (!mNoDelayedMouseEvents && aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
nsDelayedEvent* event = new nsDelayedMouseEvent(aEvent->AsMouseEvent());
|
|
if (!mDelayedEvents.AppendElement(event)) {
|
|
delete event;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
PresShell* shell =
|
|
static_cast<PresShell*>(frame->PresContext()->PresShell());
|
|
switch (aEvent->message) {
|
|
case NS_TOUCH_MOVE:
|
|
case NS_TOUCH_CANCEL:
|
|
case NS_TOUCH_END: {
|
|
// get the correct shell to dispatch to
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
nsTArray< nsRefPtr<dom::Touch> >& touches = touchEvent->touches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
dom::Touch* touch = touches[i];
|
|
if (!touch) {
|
|
break;
|
|
}
|
|
|
|
nsRefPtr<dom::Touch> oldTouch =
|
|
gCaptureTouchList->GetWeak(touch->Identifier());
|
|
if (!oldTouch) {
|
|
break;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content =
|
|
do_QueryInterface(oldTouch->Target());
|
|
if (!content) {
|
|
break;
|
|
}
|
|
|
|
nsIFrame* contentFrame = content->GetPrimaryFrame();
|
|
if (!contentFrame) {
|
|
break;
|
|
}
|
|
|
|
shell = static_cast<PresShell*>(
|
|
contentFrame->PresContext()->PresShell());
|
|
if (shell) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Check if we have an active EventStateManager which isn't the
|
|
// EventStateManager of the current PresContext.
|
|
// If that is the case, and mouse is over some ancestor document,
|
|
// forward event handling to the active document.
|
|
// This way content can get mouse events even when
|
|
// mouse is over the chrome or outside the window.
|
|
//
|
|
// Note, currently for backwards compatibility we don't forward mouse events
|
|
// to the active document when mouse is over some subdocument.
|
|
nsEventStateManager* activeESM =
|
|
nsEventStateManager::GetActiveEventStateManager();
|
|
if (activeESM && aEvent->HasMouseEventMessage() &&
|
|
activeESM != shell->GetPresContext()->EventStateManager() &&
|
|
static_cast<nsEventStateManager*>(activeESM)->GetPresContext()) {
|
|
nsIPresShell* activeShell =
|
|
static_cast<nsEventStateManager*>(activeESM)->GetPresContext()->GetPresShell();
|
|
if (activeShell &&
|
|
nsContentUtils::ContentIsCrossDocDescendantOf(activeShell->GetDocument(),
|
|
shell->GetDocument())) {
|
|
shell = static_cast<PresShell*>(activeShell);
|
|
frame = shell->GetRootFrame();
|
|
}
|
|
}
|
|
|
|
if (shell != this) {
|
|
// Handle the event in the correct shell.
|
|
// Prevent deletion until we're done with event handling (bug 336582).
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(shell);
|
|
// We pass the subshell's root frame as the frame to start from. This is
|
|
// the only correct alternative; if the event was captured then it
|
|
// must have been captured by us or some ancestor shell and we
|
|
// now ask the subshell to dispatch it normally.
|
|
return shell->HandlePositionedEvent(frame, aEvent, aEventStatus);
|
|
}
|
|
|
|
return HandlePositionedEvent(frame, aEvent, aEventStatus);
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (frame) {
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
|
|
// key and IME related events go to the focused frame in this DOM window.
|
|
if (aEvent->IsTargetedAtFocusedContent()) {
|
|
mCurrentEventContent = nullptr;
|
|
|
|
nsCOMPtr<nsPIDOMWindow> window =
|
|
do_QueryInterface(mDocument->GetWindow());
|
|
nsCOMPtr<nsPIDOMWindow> focusedWindow;
|
|
nsCOMPtr<nsIContent> eventTarget =
|
|
nsFocusManager::GetFocusedDescendant(window, false,
|
|
getter_AddRefs(focusedWindow));
|
|
|
|
// otherwise, if there is no focused content or the focused content has
|
|
// no frame, just use the root content. This ensures that key events
|
|
// still get sent to the window properly if nothing is focused or if a
|
|
// frame goes away while it is focused.
|
|
if (!eventTarget || !eventTarget->GetPrimaryFrame()) {
|
|
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(mDocument);
|
|
if (htmlDoc) {
|
|
nsCOMPtr<nsIDOMHTMLElement> body;
|
|
htmlDoc->GetBody(getter_AddRefs(body));
|
|
eventTarget = do_QueryInterface(body);
|
|
if (!eventTarget) {
|
|
eventTarget = mDocument->GetRootElement();
|
|
}
|
|
} else {
|
|
eventTarget = mDocument->GetRootElement();
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_KEY_DOWN) {
|
|
NS_IF_RELEASE(gKeyDownTarget);
|
|
NS_IF_ADDREF(gKeyDownTarget = eventTarget);
|
|
}
|
|
else if ((aEvent->message == NS_KEY_PRESS || aEvent->message == NS_KEY_UP) &&
|
|
gKeyDownTarget) {
|
|
// If a different element is now focused for the keypress/keyup event
|
|
// than what was focused during the keydown event, check if the new
|
|
// focused element is not in a chrome document any more, and if so,
|
|
// retarget the event back at the keydown target. This prevents a
|
|
// content area from grabbing the focus from chrome in-between key
|
|
// events.
|
|
if (eventTarget &&
|
|
nsContentUtils::IsChromeDoc(gKeyDownTarget->GetCurrentDoc()) !=
|
|
nsContentUtils::IsChromeDoc(eventTarget->GetCurrentDoc())) {
|
|
eventTarget = gKeyDownTarget;
|
|
}
|
|
|
|
if (aEvent->message == NS_KEY_UP) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
}
|
|
|
|
mCurrentEventFrame = nullptr;
|
|
nsIDocument* targetDoc = eventTarget ? eventTarget->OwnerDoc() : nullptr;
|
|
if (targetDoc && targetDoc != mDocument) {
|
|
PopCurrentEventInfo();
|
|
nsCOMPtr<nsIPresShell> shell = targetDoc->GetShell();
|
|
if (shell) {
|
|
rv = static_cast<PresShell*>(shell.get())->
|
|
HandleRetargetedEvent(aEvent, aEventStatus, eventTarget);
|
|
}
|
|
return rv;
|
|
} else {
|
|
mCurrentEventContent = eventTarget;
|
|
}
|
|
|
|
if (!GetCurrentEventContent() || !GetCurrentEventFrame() ||
|
|
InZombieDocument(mCurrentEventContent)) {
|
|
rv = RetargetEventToParent(aEvent, aEventStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
} else {
|
|
mCurrentEventFrame = frame;
|
|
}
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aEventStatus);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
ShowEventTargetDebug();
|
|
#endif
|
|
PopCurrentEventInfo();
|
|
} else {
|
|
// Activation events need to be dispatched even if no frame was found, since
|
|
// we don't want the focus to be out of sync.
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent)) {
|
|
mCurrentEventFrame = nullptr;
|
|
return HandleEventInternal(aEvent, aEventStatus);
|
|
}
|
|
else if (aEvent->HasKeyEventMessage()) {
|
|
// Keypress events in new blank tabs should not be completely thrown away.
|
|
// Retarget them -- the parent chrome shell might make use of them.
|
|
return RetargetEventToParent(aEvent, aEventStatus);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#ifdef ANDROID
|
|
nsIDocument*
|
|
PresShell::GetTouchEventTargetDocument()
|
|
{
|
|
nsPresContext* context = GetPresContext();
|
|
if (!context || !context->IsRoot()) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> container = context->GetContainer();
|
|
nsCOMPtr<nsIDocShellTreeItem> shellAsTreeItem = do_QueryInterface(container);
|
|
if (!shellAsTreeItem) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeOwner> owner;
|
|
shellAsTreeItem->GetTreeOwner(getter_AddRefs(owner));
|
|
if (!owner) {
|
|
return nullptr;
|
|
}
|
|
|
|
// now get the primary content shell (active tab)
|
|
nsCOMPtr<nsIDocShellTreeItem> item;
|
|
owner->GetPrimaryContentShell(getter_AddRefs(item));
|
|
nsCOMPtr<nsIDocShell> childDocShell = do_QueryInterface(item);
|
|
nsCOMPtr<nsIDocument> result = do_GetInterface(childDocShell);
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::ShowEventTargetDebug()
|
|
{
|
|
if (nsFrame::GetShowEventTargetFrameBorder() &&
|
|
GetCurrentEventFrame()) {
|
|
if (mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame->InvalidateFrame();
|
|
}
|
|
|
|
mDrawEventTargetFrame = mCurrentEventFrame;
|
|
mDrawEventTargetFrame->InvalidateFrame();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsresult
|
|
PresShell::HandlePositionedEvent(nsIFrame* aTargetFrame,
|
|
WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
|
|
mCurrentEventFrame = aTargetFrame;
|
|
|
|
if (mCurrentEventFrame) {
|
|
nsCOMPtr<nsIContent> targetElement;
|
|
mCurrentEventFrame->GetContentForEvent(aEvent,
|
|
getter_AddRefs(targetElement));
|
|
|
|
// If there is no content for this frame, target it anyway. Some
|
|
// frames can be targeted but do not have content, particularly
|
|
// windows with scrolling off.
|
|
if (targetElement) {
|
|
// Bug 103055, bug 185889: mouse events apply to *elements*, not all
|
|
// nodes. Thus we get the nearest element parent here.
|
|
// XXX we leave the frame the same even if we find an element
|
|
// parent, so that the text frame will receive the event (selection
|
|
// and friends are the ones who care about that anyway)
|
|
//
|
|
// We use weak pointers because during this tight loop, the node
|
|
// will *not* go away. And this happens on every mousemove.
|
|
while (targetElement && !targetElement->IsElement()) {
|
|
targetElement = targetElement->GetParent();
|
|
}
|
|
|
|
// If we found an element, target it. Otherwise, target *nothing*.
|
|
if (!targetElement) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
} else if (targetElement != mCurrentEventContent) {
|
|
mCurrentEventContent = targetElement;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aEventStatus);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
ShowEventTargetDebug();
|
|
#endif
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEventWithTarget(WidgetEvent* aEvent, nsIFrame* aFrame,
|
|
nsIContent* aContent, nsEventStatus* aStatus)
|
|
{
|
|
#if DEBUG
|
|
MOZ_ASSERT(!aFrame || aFrame->PresContext()->GetPresShell() == this,
|
|
"wrong shell");
|
|
if (aContent) {
|
|
nsIDocument* doc = aContent->GetCurrentDoc();
|
|
NS_ASSERTION(doc, "event for content that isn't in a document");
|
|
NS_ASSERTION(!doc || doc->GetShell() == this, "wrong shell");
|
|
}
|
|
#endif
|
|
NS_ENSURE_STATE(!aContent || aContent->GetCurrentDoc() == mDocument);
|
|
|
|
PushCurrentEventInfo(aFrame, aContent);
|
|
nsresult rv = HandleEventInternal(aEvent, aStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
static bool CanHandleContextMenuEvent(WidgetMouseEvent* aMouseEvent,
|
|
nsIFrame* aFrame)
|
|
{
|
|
#if defined(XP_MACOSX) && defined(MOZ_XUL)
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
nsIFrame* popupFrame = pm->GetTopPopup(ePopupTypeMenu);
|
|
if (popupFrame) {
|
|
// context menus should not be opened while another menu is open on Mac,
|
|
// so return false so that the event is not fired.
|
|
if (aMouseEvent->context == WidgetMouseEvent::eContextMenuKey) {
|
|
return false;
|
|
} else if (aMouseEvent->widget) {
|
|
nsWindowType windowType;
|
|
aMouseEvent->widget->GetWindowType(windowType);
|
|
if (windowType == eWindowType_popup) {
|
|
for (nsIFrame* current = aFrame; current;
|
|
current = nsLayoutUtils::GetCrossDocParentFrame(current)) {
|
|
if (current->GetType() == nsGkAtoms::menuPopupFrame) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::HandleEventInternal(WidgetEvent* aEvent, nsEventStatus* aStatus)
|
|
{
|
|
nsRefPtr<nsEventStateManager> manager = mPresContext->EventStateManager();
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent) || GetCurrentEventFrame()) {
|
|
bool touchIsNew = false;
|
|
bool isHandlingUserInput = false;
|
|
|
|
// XXX How about IME events and input events for plugins?
|
|
if (aEvent->mFlags.mIsTrusted) {
|
|
switch (aEvent->message) {
|
|
case NS_KEY_PRESS:
|
|
case NS_KEY_DOWN:
|
|
case NS_KEY_UP: {
|
|
nsIDocument* doc = GetCurrentEventContent() ?
|
|
mCurrentEventContent->OwnerDoc() : nullptr;
|
|
nsIDocument* fullscreenAncestor = nullptr;
|
|
if (aEvent->AsKeyboardEvent()->keyCode == NS_VK_ESCAPE) {
|
|
if ((fullscreenAncestor = nsContentUtils::GetFullscreenAncestor(doc))) {
|
|
// Prevent default action on ESC key press when exiting
|
|
// DOM fullscreen mode. This prevents the browser ESC key
|
|
// handler from stopping all loads in the document, which
|
|
// would cause <video> loads to stop.
|
|
aEvent->mFlags.mDefaultPrevented = true;
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
|
|
if (aEvent->message == NS_KEY_UP) {
|
|
// ESC key released while in DOM fullscreen mode.
|
|
// If fullscreen is running in content-only mode, exit the target
|
|
// doctree branch from fullscreen, otherwise fully exit all
|
|
// browser windows and documents from fullscreen mode.
|
|
// Note: in the content-only fullscreen case, we pass the
|
|
// fullscreenAncestor since |doc| may not actually be fullscreen
|
|
// here, and ExitFullscreen() has no affect when passed a
|
|
// non-fullscreen document.
|
|
nsIDocument::ExitFullscreen(
|
|
nsContentUtils::IsFullscreenApiContentOnly() ? fullscreenAncestor : nullptr,
|
|
/* async */ true);
|
|
}
|
|
}
|
|
nsCOMPtr<nsIDocument> pointerLockedDoc =
|
|
do_QueryReferent(nsEventStateManager::sPointerLockedDoc);
|
|
if (pointerLockedDoc) {
|
|
aEvent->mFlags.mDefaultPrevented = true;
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
if (aEvent->message == NS_KEY_UP) {
|
|
nsIDocument::UnlockPointer();
|
|
}
|
|
}
|
|
}
|
|
// Else not full-screen mode or key code is unrestricted, fall
|
|
// through to normal handling.
|
|
}
|
|
case NS_MOUSE_BUTTON_DOWN:
|
|
case NS_MOUSE_BUTTON_UP:
|
|
isHandlingUserInput = true;
|
|
break;
|
|
case NS_TOUCH_START: {
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
// if there is only one touch in this touchstart event, assume that it is
|
|
// the start of a new touch session and evict any old touches in the
|
|
// queue
|
|
if (touchEvent->touches.Length() == 1) {
|
|
nsTArray< nsRefPtr<dom::Touch> > touches;
|
|
gCaptureTouchList->Enumerate(&AppendToTouchList, (void *)&touches);
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
EvictTouchPoint(touches[i]);
|
|
}
|
|
}
|
|
// Add any new touches to the queue
|
|
for (uint32_t i = 0; i < touchEvent->touches.Length(); ++i) {
|
|
dom::Touch* touch = touchEvent->touches[i];
|
|
int32_t id = touch->Identifier();
|
|
if (!gCaptureTouchList->Get(id, nullptr)) {
|
|
// If it is not already in the queue, it is a new touch
|
|
touch->mChanged = true;
|
|
}
|
|
touch->mMessage = aEvent->message;
|
|
gCaptureTouchList->Put(id, touch);
|
|
}
|
|
break;
|
|
}
|
|
case NS_TOUCH_CANCEL:
|
|
case NS_TOUCH_END: {
|
|
// Remove the changed touches
|
|
// need to make sure we only remove touches that are ending here
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
nsTArray< nsRefPtr<dom::Touch> >& touches = touchEvent->touches;
|
|
for (uint32_t i = 0; i < touches.Length(); ++i) {
|
|
dom::Touch* touch = touches[i];
|
|
if (!touch) {
|
|
continue;
|
|
}
|
|
touch->mMessage = aEvent->message;
|
|
touch->mChanged = true;
|
|
|
|
int32_t id = touch->Identifier();
|
|
nsRefPtr<dom::Touch> oldTouch = gCaptureTouchList->GetWeak(id);
|
|
if (!oldTouch) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<EventTarget> targetPtr = oldTouch->mTarget;
|
|
|
|
mCurrentEventContent = do_QueryInterface(targetPtr);
|
|
touch->SetTarget(targetPtr);
|
|
gCaptureTouchList->Remove(id);
|
|
}
|
|
// add any touches left in the touch list, but ensure changed=false
|
|
gCaptureTouchList->Enumerate(&AppendToTouchList, (void *)&touches);
|
|
break;
|
|
}
|
|
case NS_TOUCH_MOVE: {
|
|
// Check for touches that changed. Mark them add to queue
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
nsTArray< nsRefPtr<dom::Touch> >& touches = touchEvent->touches;
|
|
bool haveChanged = false;
|
|
for (int32_t i = touches.Length(); i; ) {
|
|
--i;
|
|
dom::Touch* touch = touches[i];
|
|
if (!touch) {
|
|
continue;
|
|
}
|
|
int32_t id = touch->Identifier();
|
|
touch->mMessage = aEvent->message;
|
|
|
|
nsRefPtr<dom::Touch> oldTouch = gCaptureTouchList->GetWeak(id);
|
|
if (!oldTouch) {
|
|
touches.RemoveElementAt(i);
|
|
continue;
|
|
}
|
|
if (!touch->Equals(oldTouch)) {
|
|
touch->mChanged = true;
|
|
haveChanged = true;
|
|
}
|
|
|
|
nsCOMPtr<dom::EventTarget> targetPtr = oldTouch->mTarget;
|
|
if (!targetPtr) {
|
|
touches.RemoveElementAt(i);
|
|
continue;
|
|
}
|
|
touch->SetTarget(targetPtr);
|
|
|
|
gCaptureTouchList->Put(id, touch);
|
|
// if we're moving from touchstart to touchmove for this touch
|
|
// we allow preventDefault to prevent mouse events
|
|
if (oldTouch->mMessage != touch->mMessage) {
|
|
touchIsNew = true;
|
|
}
|
|
}
|
|
// is nothing has changed, we should just return
|
|
if (!haveChanged) {
|
|
if (gPreventMouseEvents) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
break;
|
|
}
|
|
case NS_DRAGDROP_DROP:
|
|
nsCOMPtr<nsIDragSession> session = nsContentUtils::GetDragSession();
|
|
if (session) {
|
|
bool onlyChromeDrop = false;
|
|
session->GetOnlyChromeDrop(&onlyChromeDrop);
|
|
if (onlyChromeDrop) {
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_CONTEXTMENU) {
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (!CanHandleContextMenuEvent(mouseEvent, GetCurrentEventFrame())) {
|
|
return NS_OK;
|
|
}
|
|
if (mouseEvent->context == WidgetMouseEvent::eContextMenuKey &&
|
|
!AdjustContextMenuKeyEvent(mouseEvent)) {
|
|
return NS_OK;
|
|
}
|
|
if (mouseEvent->IsShift()) {
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
aEvent->mFlags.mRetargetToNonNativeAnonymous = true;
|
|
}
|
|
}
|
|
|
|
nsAutoHandlingUserInputStatePusher userInpStatePusher(isHandlingUserInput,
|
|
aEvent, mDocument);
|
|
|
|
if (aEvent->mFlags.mIsTrusted && aEvent->message == NS_MOUSE_MOVE) {
|
|
nsIPresShell::AllowMouseCapture(
|
|
nsEventStateManager::GetActiveEventStateManager() == manager);
|
|
}
|
|
|
|
nsAutoPopupStatePusher popupStatePusher(nsDOMEvent::GetEventPopupControlState(aEvent));
|
|
|
|
// FIXME. If the event was reused, we need to clear the old target,
|
|
// bug 329430
|
|
aEvent->target = nullptr;
|
|
|
|
// 1. Give event to event manager for pre event state changes and
|
|
// generation of synthetic events.
|
|
rv = manager->PreHandleEvent(mPresContext, aEvent, mCurrentEventFrame, aStatus);
|
|
|
|
// 2. Give event to the DOM for third party and JS use.
|
|
if (NS_SUCCEEDED(rv)) {
|
|
bool wasHandlingKeyBoardEvent =
|
|
nsContentUtils::IsHandlingKeyBoardEvent();
|
|
if (aEvent->eventStructType == NS_KEY_EVENT) {
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(true);
|
|
}
|
|
if (aEvent->IsAllowedToDispatchDOMEvent()) {
|
|
nsPresShellEventCB eventCB(this);
|
|
if (aEvent->eventStructType == NS_TOUCH_EVENT) {
|
|
DispatchTouchEvent(aEvent, aStatus, &eventCB, touchIsNew);
|
|
} else {
|
|
nsCOMPtr<nsINode> eventTarget = mCurrentEventContent.get();
|
|
nsPresShellEventCB* eventCBPtr = &eventCB;
|
|
if (!eventTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
if (mCurrentEventFrame) {
|
|
rv = mCurrentEventFrame->
|
|
GetContentForEvent(aEvent, getter_AddRefs(targetContent));
|
|
}
|
|
if (NS_SUCCEEDED(rv) && targetContent) {
|
|
eventTarget = do_QueryInterface(targetContent);
|
|
} else if (mDocument) {
|
|
eventTarget = do_QueryInterface(mDocument);
|
|
// If we don't have any content, the callback wouldn't probably
|
|
// do nothing.
|
|
eventCBPtr = nullptr;
|
|
}
|
|
}
|
|
if (eventTarget) {
|
|
if (aEvent->eventStructType == NS_COMPOSITION_EVENT ||
|
|
aEvent->eventStructType == NS_TEXT_EVENT) {
|
|
nsIMEStateManager::DispatchCompositionEvent(eventTarget,
|
|
mPresContext, aEvent, aStatus, eventCBPtr);
|
|
} else {
|
|
nsEventDispatcher::Dispatch(eventTarget, mPresContext,
|
|
aEvent, nullptr, aStatus, eventCBPtr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(wasHandlingKeyBoardEvent);
|
|
|
|
// 3. Give event to event manager for post event state changes and
|
|
// generation of synthetic events.
|
|
if (!mIsDestroying && NS_SUCCEEDED(rv)) {
|
|
rv = manager->PostHandleEvent(mPresContext, aEvent,
|
|
GetCurrentEventFrame(), aStatus);
|
|
}
|
|
}
|
|
|
|
if (aEvent->message == NS_MOUSE_BUTTON_UP) {
|
|
// reset the capturing content now that the mouse button is up
|
|
SetCapturingContent(nullptr, 0);
|
|
} else if (aEvent->message == NS_MOUSE_MOVE) {
|
|
nsIPresShell::AllowMouseCapture(false);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
PresShell::DispatchTouchEvent(WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
nsPresShellEventCB* aEventCB,
|
|
bool aTouchIsNew)
|
|
{
|
|
// calling preventDefault on touchstart or the first touchmove for a
|
|
// point prevents mouse events
|
|
bool canPrevent = aEvent->message == NS_TOUCH_START ||
|
|
(aEvent->message == NS_TOUCH_MOVE && aTouchIsNew);
|
|
bool preventDefault = false;
|
|
nsEventStatus tmpStatus = nsEventStatus_eIgnore;
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
|
|
// loop over all touches and dispatch events on any that have changed
|
|
for (uint32_t i = 0; i < touchEvent->touches.Length(); ++i) {
|
|
dom::Touch* touch = touchEvent->touches[i];
|
|
if (!touch || !touch->mChanged) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<EventTarget> targetPtr = touch->mTarget;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(targetPtr);
|
|
if (!content) {
|
|
continue;
|
|
}
|
|
|
|
nsIDocument* doc = content->OwnerDoc();
|
|
nsIContent* capturingContent = GetCapturingContent();
|
|
if (capturingContent) {
|
|
if (capturingContent->OwnerDoc() != doc) {
|
|
// Wrong document, don't dispatch anything.
|
|
continue;
|
|
}
|
|
content = capturingContent;
|
|
}
|
|
// copy the event
|
|
WidgetTouchEvent newEvent(touchEvent->mFlags.mIsTrusted, touchEvent);
|
|
newEvent.target = targetPtr;
|
|
|
|
nsRefPtr<PresShell> contentPresShell;
|
|
if (doc == mDocument) {
|
|
contentPresShell = static_cast<PresShell*>(doc->GetShell());
|
|
if (contentPresShell) {
|
|
//XXXsmaug huge hack. Pushing possibly capturing content,
|
|
// even though event target is something else.
|
|
contentPresShell->PushCurrentEventInfo(
|
|
content->GetPrimaryFrame(), content);
|
|
}
|
|
}
|
|
|
|
nsIPresShell *presShell = doc->GetShell();
|
|
if (!presShell) {
|
|
continue;
|
|
}
|
|
|
|
nsPresContext *context = presShell->GetPresContext();
|
|
|
|
tmpStatus = nsEventStatus_eIgnore;
|
|
nsEventDispatcher::Dispatch(targetPtr, context,
|
|
&newEvent, nullptr, &tmpStatus, aEventCB);
|
|
if (nsEventStatus_eConsumeNoDefault == tmpStatus ||
|
|
newEvent.mFlags.mMultipleActionsPrevented) {
|
|
preventDefault = true;
|
|
}
|
|
|
|
if (newEvent.mFlags.mMultipleActionsPrevented) {
|
|
touchEvent->mFlags.mMultipleActionsPrevented = true;
|
|
}
|
|
|
|
if (contentPresShell) {
|
|
contentPresShell->PopCurrentEventInfo();
|
|
}
|
|
}
|
|
|
|
// if preventDefault was called on any of the events dispatched
|
|
// and this is touchstart, or the first touchmove, widget should consume
|
|
// other events that would be associated with this touch session
|
|
if (preventDefault && canPrevent) {
|
|
gPreventMouseEvents = true;
|
|
}
|
|
|
|
if (gPreventMouseEvents) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
} else {
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
}
|
|
}
|
|
|
|
// Dispatch event to content only (NOT full processing)
|
|
// See also HandleEventWithTarget which does full event processing.
|
|
nsresult
|
|
PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, aTargetContent);
|
|
|
|
// Bug 41013: Check if the event should be dispatched to content.
|
|
// It's possible that we are in the middle of destroying the window
|
|
// and the js context is out of date. This check detects the case
|
|
// that caused a crash in bug 41013, but there may be a better way
|
|
// to handle this situation!
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
|
|
// Dispatch event to content
|
|
rv = nsEventDispatcher::Dispatch(aTargetContent, mPresContext, aEvent, nullptr,
|
|
aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
// See the method above.
|
|
nsresult
|
|
PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
nsIDOMEvent* aEvent,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, aTargetContent);
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
rv = nsEventDispatcher::DispatchDOMEvent(aTargetContent, nullptr, aEvent,
|
|
mPresContext, aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
bool
|
|
PresShell::AdjustContextMenuKeyEvent(WidgetMouseEvent* aEvent)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
// if a menu is open, open the context menu relative to the active item on the menu.
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
nsIFrame* popupFrame = pm->GetTopPopup(ePopupTypeMenu);
|
|
if (popupFrame) {
|
|
nsIFrame* itemFrame =
|
|
(static_cast<nsMenuPopupFrame *>(popupFrame))->GetCurrentMenuItem();
|
|
if (!itemFrame)
|
|
itemFrame = popupFrame;
|
|
|
|
nsCOMPtr<nsIWidget> widget = popupFrame->GetNearestWidget();
|
|
aEvent->widget = widget;
|
|
nsIntPoint widgetPoint = widget->WidgetToScreenOffset();
|
|
aEvent->refPoint = LayoutDeviceIntPoint::FromUntyped(
|
|
itemFrame->GetScreenRect().BottomLeft() - widgetPoint);
|
|
|
|
mCurrentEventContent = itemFrame->GetContent();
|
|
mCurrentEventFrame = itemFrame;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// If we're here because of the key-equiv for showing context menus, we
|
|
// have to twiddle with the NS event to make sure the context menu comes
|
|
// up in the upper left of the relevant content area before we create
|
|
// the DOM event. Since we never call InitMouseEvent() on the event,
|
|
// the client X/Y will be 0,0. We can make use of that if the widget is null.
|
|
// Use the root view manager's widget since it's most likely to have one,
|
|
// and the coordinates returned by GetCurrentItemAndPositionForElement
|
|
// are relative to the widget of the root of the root view manager.
|
|
nsRootPresContext* rootPC = mPresContext->GetRootPresContext();
|
|
aEvent->refPoint.x = 0;
|
|
aEvent->refPoint.y = 0;
|
|
if (rootPC) {
|
|
rootPC->PresShell()->GetViewManager()->
|
|
GetRootWidget(getter_AddRefs(aEvent->widget));
|
|
|
|
if (aEvent->widget) {
|
|
// default the refpoint to the topleft of our document
|
|
nsPoint offset(0, 0);
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
nsView* view = rootFrame->GetClosestView(&offset);
|
|
offset += view->GetOffsetToWidget(aEvent->widget);
|
|
aEvent->refPoint =
|
|
LayoutDeviceIntPoint::FromAppUnitsToNearest(offset, mPresContext->AppUnitsPerDevPixel());
|
|
}
|
|
}
|
|
} else {
|
|
aEvent->widget = nullptr;
|
|
}
|
|
|
|
// see if we should use the caret position for the popup
|
|
nsIntPoint caretPoint;
|
|
// Beware! This may flush notifications via synchronous
|
|
// ScrollSelectionIntoView.
|
|
if (PrepareToUseCaretPosition(aEvent->widget, caretPoint)) {
|
|
// caret position is good
|
|
aEvent->refPoint = LayoutDeviceIntPoint::FromUntyped(caretPoint);
|
|
return true;
|
|
}
|
|
|
|
// If we're here because of the key-equiv for showing context menus, we
|
|
// have to reset the event target to the currently focused element. Get it
|
|
// from the focus controller.
|
|
nsCOMPtr<nsIDOMElement> currentFocus;
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm)
|
|
fm->GetFocusedElement(getter_AddRefs(currentFocus));
|
|
|
|
// Reset event coordinates relative to focused frame in view
|
|
if (currentFocus) {
|
|
nsCOMPtr<nsIContent> currentPointElement;
|
|
GetCurrentItemAndPositionForElement(currentFocus,
|
|
getter_AddRefs(currentPointElement),
|
|
aEvent->refPoint,
|
|
aEvent->widget);
|
|
if (currentPointElement) {
|
|
mCurrentEventContent = currentPointElement;
|
|
mCurrentEventFrame = nullptr;
|
|
GetCurrentEventFrame();
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// PresShell::PrepareToUseCaretPosition
|
|
//
|
|
// This checks to see if we should use the caret position for popup context
|
|
// menus. Returns true if the caret position should be used, and the
|
|
// coordinates of that position is returned in aTargetPt. This function
|
|
// will also scroll the window as needed to make the caret visible.
|
|
//
|
|
// The event widget should be the widget that generated the event, and
|
|
// whose coordinate system the resulting event's refPoint should be
|
|
// relative to. The returned point is in device pixels realtive to the
|
|
// widget passed in.
|
|
bool
|
|
PresShell::PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTargetPt)
|
|
{
|
|
nsresult rv;
|
|
|
|
// check caret visibility
|
|
nsRefPtr<nsCaret> caret = GetCaret();
|
|
NS_ENSURE_TRUE(caret, false);
|
|
|
|
bool caretVisible = false;
|
|
rv = caret->GetCaretVisible(&caretVisible);
|
|
if (NS_FAILED(rv) || ! caretVisible)
|
|
return false;
|
|
|
|
// caret selection, this is a temporary weak reference, so no refcounting is
|
|
// needed
|
|
nsISelection* domSelection = caret->GetCaretDOMSelection();
|
|
NS_ENSURE_TRUE(domSelection, false);
|
|
|
|
// since the match could be an anonymous textnode inside a
|
|
// <textarea> or text <input>, we need to get the outer frame
|
|
// note: frames are not refcounted
|
|
nsIFrame* frame = nullptr; // may be nullptr
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
rv = domSelection->GetFocusNode(getter_AddRefs(node));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
NS_ENSURE_TRUE(node, false);
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (content) {
|
|
nsIContent* nonNative = content->FindFirstNonChromeOnlyAccessContent();
|
|
content = nonNative;
|
|
}
|
|
|
|
if (content) {
|
|
// It seems like ScrollSelectionIntoView should be enough, but it's
|
|
// not. The problem is that scrolling the selection into view when it is
|
|
// below the current viewport will align the top line of the frame exactly
|
|
// with the bottom of the window. This is fine, BUT, the popup event causes
|
|
// the control to be re-focused which does this exact call to
|
|
// ScrollContentIntoView, which has a one-pixel disagreement of whether the
|
|
// frame is actually in view. The result is that the frame is aligned with
|
|
// the top of the window, but the menu is still at the bottom.
|
|
//
|
|
// Doing this call first forces the frame to be in view, eliminating the
|
|
// problem. The only difference in the result is that if your cursor is in
|
|
// an edit box below the current view, you'll get the edit box aligned with
|
|
// the top of the window. This is arguably better behavior anyway.
|
|
rv = ScrollContentIntoView(content,
|
|
nsIPresShell::ScrollAxis(
|
|
nsIPresShell::SCROLL_MINIMUM,
|
|
nsIPresShell::SCROLL_IF_NOT_VISIBLE),
|
|
nsIPresShell::ScrollAxis(
|
|
nsIPresShell::SCROLL_MINIMUM,
|
|
nsIPresShell::SCROLL_IF_NOT_VISIBLE),
|
|
nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
frame = content->GetPrimaryFrame();
|
|
NS_WARN_IF_FALSE(frame, "No frame for focused content?");
|
|
}
|
|
|
|
// Actually scroll the selection (ie caret) into view. Note that this must
|
|
// be synchronous since we will be checking the caret position on the screen.
|
|
//
|
|
// Be easy about errors, and just don't scroll in those cases. Better to have
|
|
// the correct menu at a weird place than the wrong menu.
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
if (frame)
|
|
frame->GetSelectionController(GetPresContext(), getter_AddRefs(selCon));
|
|
else
|
|
selCon = static_cast<nsISelectionController *>(this);
|
|
if (selCon) {
|
|
rv = selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
// get caret position relative to the closest view
|
|
nsRect caretCoords;
|
|
nsIFrame* caretFrame = caret->GetGeometry(domSelection, &caretCoords);
|
|
if (!caretFrame)
|
|
return false;
|
|
nsPoint viewOffset;
|
|
nsView* view = caretFrame->GetClosestView(&viewOffset);
|
|
if (!view)
|
|
return false;
|
|
// and then get the caret coords relative to the event widget
|
|
if (aEventWidget) {
|
|
viewOffset += view->GetOffsetToWidget(aEventWidget);
|
|
}
|
|
caretCoords.MoveBy(viewOffset);
|
|
|
|
// caret coordinates are in app units, convert to pixels
|
|
aTargetPt.x =
|
|
presContext->AppUnitsToDevPixels(caretCoords.x + caretCoords.width);
|
|
aTargetPt.y =
|
|
presContext->AppUnitsToDevPixels(caretCoords.y + caretCoords.height);
|
|
|
|
// make sure rounding doesn't return a pixel which is outside the caret
|
|
// (e.g. one line lower)
|
|
aTargetPt.y -= 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
|
|
nsIContent** aTargetToUse,
|
|
LayoutDeviceIntPoint& aTargetPt,
|
|
nsIWidget *aRootWidget)
|
|
{
|
|
nsCOMPtr<nsIContent> focusedContent(do_QueryInterface(aCurrentEl));
|
|
ScrollContentIntoView(focusedContent,
|
|
ScrollAxis(),
|
|
ScrollAxis(),
|
|
nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
bool istree = false, checkLineHeight = true;
|
|
nscoord extraTreeY = 0;
|
|
|
|
#ifdef MOZ_XUL
|
|
// Set the position to just underneath the current item for multi-select
|
|
// lists or just underneath the selected item for single-select lists. If
|
|
// the element is not a list, or there is no selection, leave the position
|
|
// as is.
|
|
nsCOMPtr<nsIDOMXULSelectControlItemElement> item;
|
|
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelect =
|
|
do_QueryInterface(aCurrentEl);
|
|
if (multiSelect) {
|
|
checkLineHeight = false;
|
|
|
|
int32_t currentIndex;
|
|
multiSelect->GetCurrentIndex(¤tIndex);
|
|
if (currentIndex >= 0) {
|
|
nsCOMPtr<nsIDOMXULElement> xulElement(do_QueryInterface(aCurrentEl));
|
|
if (xulElement) {
|
|
nsCOMPtr<nsIBoxObject> box;
|
|
xulElement->GetBoxObject(getter_AddRefs(box));
|
|
nsCOMPtr<nsITreeBoxObject> treeBox(do_QueryInterface(box));
|
|
// Tree view special case (tree items have no frames)
|
|
// Get the focused row and add its coordinates, which are already in pixels
|
|
// XXX Boris, should we create a new interface so that this doesn't
|
|
// need to know about trees? Something like nsINodelessChildCreator which
|
|
// could provide the current focus coordinates?
|
|
if (treeBox) {
|
|
treeBox->EnsureRowIsVisible(currentIndex);
|
|
int32_t firstVisibleRow, rowHeight;
|
|
treeBox->GetFirstVisibleRow(&firstVisibleRow);
|
|
treeBox->GetRowHeight(&rowHeight);
|
|
|
|
extraTreeY += presContext->CSSPixelsToAppUnits(
|
|
(currentIndex - firstVisibleRow + 1) * rowHeight);
|
|
istree = true;
|
|
|
|
nsCOMPtr<nsITreeColumns> cols;
|
|
treeBox->GetColumns(getter_AddRefs(cols));
|
|
if (cols) {
|
|
nsCOMPtr<nsITreeColumn> col;
|
|
cols->GetFirstColumn(getter_AddRefs(col));
|
|
if (col) {
|
|
nsCOMPtr<nsIDOMElement> colElement;
|
|
col->GetElement(getter_AddRefs(colElement));
|
|
nsCOMPtr<nsIContent> colContent(do_QueryInterface(colElement));
|
|
if (colContent) {
|
|
nsIFrame* frame = colContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
extraTreeY += frame->GetSize().height;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
multiSelect->GetCurrentItem(getter_AddRefs(item));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// don't check menulists as the selected item will be inside a popup.
|
|
nsCOMPtr<nsIDOMXULMenuListElement> menulist = do_QueryInterface(aCurrentEl);
|
|
if (!menulist) {
|
|
nsCOMPtr<nsIDOMXULSelectControlElement> select =
|
|
do_QueryInterface(aCurrentEl);
|
|
if (select) {
|
|
checkLineHeight = false;
|
|
select->GetSelectedItem(getter_AddRefs(item));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (item)
|
|
focusedContent = do_QueryInterface(item);
|
|
#endif
|
|
|
|
nsIFrame *frame = focusedContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
NS_ASSERTION(frame->PresContext() == GetPresContext(),
|
|
"handling event for focused content that is not in our document?");
|
|
|
|
nsPoint frameOrigin(0, 0);
|
|
|
|
// Get the frame's origin within its view
|
|
nsView *view = frame->GetClosestView(&frameOrigin);
|
|
NS_ASSERTION(view, "No view for frame");
|
|
|
|
// View's origin relative the widget
|
|
if (aRootWidget) {
|
|
frameOrigin += view->GetOffsetToWidget(aRootWidget);
|
|
}
|
|
|
|
// Start context menu down and to the right from top left of frame
|
|
// use the lineheight. This is a good distance to move the context
|
|
// menu away from the top left corner of the frame. If we always
|
|
// used the frame height, the context menu could end up far away,
|
|
// for example when we're focused on linked images.
|
|
// On the other hand, we want to use the frame height if it's less
|
|
// than the current line height, so that the context menu appears
|
|
// associated with the correct frame.
|
|
nscoord extra = 0;
|
|
if (!istree) {
|
|
extra = frame->GetSize().height;
|
|
if (checkLineHeight) {
|
|
nsIScrollableFrame *scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrame(frame);
|
|
if (scrollFrame) {
|
|
nsSize scrollAmount = scrollFrame->GetLineScrollAmount();
|
|
nsIFrame* f = do_QueryFrame(scrollFrame);
|
|
int32_t APD = presContext->AppUnitsPerDevPixel();
|
|
int32_t scrollAPD = f->PresContext()->AppUnitsPerDevPixel();
|
|
scrollAmount = scrollAmount.ConvertAppUnits(scrollAPD, APD);
|
|
if (extra > scrollAmount.height) {
|
|
extra = scrollAmount.height;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
aTargetPt.x = presContext->AppUnitsToDevPixels(frameOrigin.x);
|
|
aTargetPt.y = presContext->AppUnitsToDevPixels(
|
|
frameOrigin.y + extra + extraTreeY);
|
|
}
|
|
|
|
NS_IF_ADDREF(*aTargetToUse = focusedContent);
|
|
}
|
|
|
|
bool
|
|
PresShell::ShouldIgnoreInvalidation()
|
|
{
|
|
return mPaintingSuppressed || !mIsActive || mIsNeverPainting;
|
|
}
|
|
|
|
void
|
|
PresShell::WillPaint()
|
|
{
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (!rootPresContext) {
|
|
// In some edge cases, such as when we don't have a root frame yet,
|
|
// we can't find the root prescontext. There's nothing to do in that
|
|
// case.
|
|
return;
|
|
}
|
|
|
|
// Don't bother doing anything if some viewmanager in our tree is painting
|
|
// while we still have painting suppressed or we are not active.
|
|
if (mPaintingSuppressed || !mIsActive || !IsVisible()) {
|
|
return;
|
|
}
|
|
|
|
rootPresContext->FlushWillPaintObservers();
|
|
if (mIsDestroying)
|
|
return;
|
|
|
|
// Process reflows, if we have them, to reduce flicker due to invalidates and
|
|
// reflow being interspersed. Note that we _do_ allow this to be
|
|
// interruptible; if we can't do all the reflows it's better to flicker a bit
|
|
// than to freeze up.
|
|
FlushPendingNotifications(ChangesToFlush(Flush_InterruptibleLayout, false));
|
|
}
|
|
|
|
void
|
|
PresShell::WillPaintWindow()
|
|
{
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext != mPresContext) {
|
|
// This could be a popup's presshell. We don't allow plugins in popups
|
|
// so there's nothing to do here.
|
|
return;
|
|
}
|
|
|
|
#ifndef XP_MACOSX
|
|
rootPresContext->ApplyPluginGeometryUpdates();
|
|
#endif
|
|
}
|
|
|
|
void
|
|
PresShell::DidPaintWindow()
|
|
{
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext != mPresContext) {
|
|
// This could be a popup's presshell. No point in notifying XPConnect
|
|
// about compositing of popups.
|
|
return;
|
|
}
|
|
|
|
if (nsContentUtils::XPConnect()) {
|
|
nsContentUtils::XPConnect()->NotifyDidPaint();
|
|
}
|
|
}
|
|
|
|
bool
|
|
PresShell::IsVisible()
|
|
{
|
|
if (!mViewManager)
|
|
return false;
|
|
|
|
nsView* view = mViewManager->GetRootView();
|
|
if (!view)
|
|
return true;
|
|
|
|
// inner view of subdoc frame
|
|
view = view->GetParent();
|
|
if (!view)
|
|
return true;
|
|
|
|
// subdoc view
|
|
view = view->GetParent();
|
|
if (!view)
|
|
return true;
|
|
|
|
nsIFrame* frame = view->GetFrame();
|
|
if (!frame)
|
|
return true;
|
|
|
|
return frame->IsVisibleConsideringAncestors(nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::GetAgentStyleSheets(nsCOMArray<nsIStyleSheet>& aSheets)
|
|
{
|
|
aSheets.Clear();
|
|
int32_t sheetCount = mStyleSet->SheetCount(nsStyleSet::eAgentSheet);
|
|
|
|
for (int32_t i = 0; i < sheetCount; ++i) {
|
|
nsIStyleSheet *sheet = mStyleSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
|
|
if (!aSheets.AppendObject(sheet))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetAgentStyleSheets(const nsCOMArray<nsIStyleSheet>& aSheets)
|
|
{
|
|
return mStyleSet->ReplaceSheets(nsStyleSet::eAgentSheet, aSheets);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::AddOverrideStyleSheet(nsIStyleSheet *aSheet)
|
|
{
|
|
return mStyleSet->PrependStyleSheet(nsStyleSet::eOverrideSheet, aSheet);
|
|
}
|
|
|
|
nsresult
|
|
PresShell::RemoveOverrideStyleSheet(nsIStyleSheet *aSheet)
|
|
{
|
|
return mStyleSet->RemoveStyleSheet(nsStyleSet::eOverrideSheet, aSheet);
|
|
}
|
|
|
|
static void
|
|
FreezeElement(nsIContent *aContent, void * /* unused */)
|
|
{
|
|
nsCOMPtr<nsIObjectLoadingContent> olc(do_QueryInterface(aContent));
|
|
if (olc) {
|
|
olc->StopPluginInstance();
|
|
}
|
|
}
|
|
|
|
static bool
|
|
FreezeSubDocument(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell *shell = aDocument->GetShell();
|
|
if (shell)
|
|
shell->Freeze();
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PresShell::Freeze()
|
|
{
|
|
mUpdateImageVisibilityEvent.Revoke();
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
mDocument->EnumerateFreezableElements(FreezeElement, nullptr);
|
|
|
|
if (mCaret) {
|
|
mCaret->SetCaretVisible(false);
|
|
}
|
|
|
|
mPaintingSuppressed = true;
|
|
|
|
if (mDocument) {
|
|
mDocument->EnumerateSubDocuments(FreezeSubDocument, nullptr);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->Freeze();
|
|
}
|
|
|
|
mFrozen = true;
|
|
if (mDocument) {
|
|
UpdateImageLockingState();
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::FireOrClearDelayedEvents(bool aFireEvents)
|
|
{
|
|
mNoDelayedMouseEvents = false;
|
|
mNoDelayedKeyEvents = false;
|
|
if (!aFireEvents) {
|
|
mDelayedEvents.Clear();
|
|
return;
|
|
}
|
|
|
|
if (mDocument) {
|
|
nsCOMPtr<nsIDocument> doc = mDocument;
|
|
while (!mIsDestroying && mDelayedEvents.Length() &&
|
|
!doc->EventHandlingSuppressed()) {
|
|
nsAutoPtr<nsDelayedEvent> ev(mDelayedEvents[0].forget());
|
|
mDelayedEvents.RemoveElementAt(0);
|
|
ev->Dispatch(this);
|
|
}
|
|
if (!doc->EventHandlingSuppressed()) {
|
|
mDelayedEvents.Clear();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
ThawElement(nsIContent *aContent, void *aShell)
|
|
{
|
|
nsCOMPtr<nsIObjectLoadingContent> olc(do_QueryInterface(aContent));
|
|
if (olc) {
|
|
olc->AsyncStartPluginInstance();
|
|
}
|
|
}
|
|
|
|
static bool
|
|
ThawSubDocument(nsIDocument *aDocument, void *aData)
|
|
{
|
|
nsIPresShell *shell = aDocument->GetShell();
|
|
if (shell)
|
|
shell->Thaw();
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PresShell::Thaw()
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->Thaw();
|
|
}
|
|
|
|
mDocument->EnumerateFreezableElements(ThawElement, this);
|
|
|
|
if (mDocument)
|
|
mDocument->EnumerateSubDocuments(ThawSubDocument, nullptr);
|
|
|
|
// Get the activeness of our presshell, as this might have changed
|
|
// while we were in the bfcache
|
|
QueryIsActive();
|
|
|
|
// We're now unfrozen
|
|
mFrozen = false;
|
|
UpdateImageLockingState();
|
|
|
|
UnsuppressPainting();
|
|
}
|
|
|
|
//--------------------------------------------------------
|
|
// Start of protected and private methods on the PresShell
|
|
//--------------------------------------------------------
|
|
|
|
void
|
|
PresShell::MaybeScheduleReflow()
|
|
{
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
if (mReflowScheduled || mIsDestroying || mIsReflowing ||
|
|
mDirtyRoots.Length() == 0)
|
|
return;
|
|
|
|
if (!mPresContext->HasPendingInterrupt() || !ScheduleReflowOffTimer()) {
|
|
ScheduleReflow();
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
void
|
|
PresShell::ScheduleReflow()
|
|
{
|
|
NS_PRECONDITION(!mReflowScheduled, "Why are we trying to schedule a reflow?");
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
|
|
if (GetPresContext()->RefreshDriver()->AddLayoutFlushObserver(this)) {
|
|
mReflowScheduled = true;
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
nsresult
|
|
PresShell::DidCauseReflow()
|
|
{
|
|
NS_ASSERTION(mChangeNestCount != 0, "Unexpected call to DidCauseReflow()");
|
|
--mChangeNestCount;
|
|
nsContentUtils::RemoveScriptBlocker();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
PresShell::WillDoReflow()
|
|
{
|
|
// We just reflowed, tell the caret that its frame might have moved.
|
|
// XXXbz that comment makes no sense
|
|
if (mCaret) {
|
|
mCaret->InvalidateOutsideCaret();
|
|
}
|
|
|
|
mPresContext->FlushUserFontSet();
|
|
|
|
mFrameConstructor->BeginUpdate();
|
|
|
|
mLastReflowStart = GetPerformanceNow();
|
|
}
|
|
|
|
void
|
|
PresShell::DidDoReflow(bool aInterruptible, bool aWasInterrupted)
|
|
{
|
|
mFrameConstructor->EndUpdate();
|
|
|
|
HandlePostedReflowCallbacks(aInterruptible);
|
|
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (container) {
|
|
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(container);
|
|
if (docShell) {
|
|
DOMHighResTimeStamp now = GetPerformanceNow();
|
|
docShell->NotifyReflowObservers(aInterruptible, mLastReflowStart, now);
|
|
}
|
|
}
|
|
|
|
if (sSynthMouseMove) {
|
|
SynthesizeMouseMove(false);
|
|
}
|
|
if (mCaret) {
|
|
// Update the caret's position now to account for any changes created by
|
|
// the reflow.
|
|
mCaret->InvalidateOutsideCaret();
|
|
mCaret->UpdateCaretPosition();
|
|
}
|
|
|
|
if (!aWasInterrupted) {
|
|
ClearReflowOnZoomPending();
|
|
}
|
|
}
|
|
|
|
DOMHighResTimeStamp
|
|
PresShell::GetPerformanceNow()
|
|
{
|
|
DOMHighResTimeStamp now = 0;
|
|
nsPIDOMWindow* window = mDocument->GetInnerWindow();
|
|
|
|
if (window) {
|
|
nsPerformance* perf = window->GetPerformance();
|
|
|
|
if (perf) {
|
|
now = perf->Now();
|
|
}
|
|
}
|
|
|
|
return now;
|
|
}
|
|
|
|
static PLDHashOperator
|
|
MarkFramesDirtyToRoot(nsPtrHashKey<nsIFrame>* p, void* closure)
|
|
{
|
|
nsIFrame* target = static_cast<nsIFrame*>(closure);
|
|
for (nsIFrame* f = p->GetKey(); f && !NS_SUBTREE_DIRTY(f);
|
|
f = f->GetParent()) {
|
|
f->AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
|
|
if (f == target) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
void
|
|
PresShell::sReflowContinueCallback(nsITimer* aTimer, void* aPresShell)
|
|
{
|
|
nsRefPtr<PresShell> self = static_cast<PresShell*>(aPresShell);
|
|
|
|
NS_PRECONDITION(aTimer == self->mReflowContinueTimer, "Unexpected timer");
|
|
self->mReflowContinueTimer = nullptr;
|
|
self->ScheduleReflow();
|
|
}
|
|
|
|
bool
|
|
PresShell::ScheduleReflowOffTimer()
|
|
{
|
|
NS_PRECONDITION(!mReflowScheduled, "Shouldn't get here");
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
|
|
if (!mReflowContinueTimer) {
|
|
mReflowContinueTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (!mReflowContinueTimer ||
|
|
NS_FAILED(mReflowContinueTimer->
|
|
InitWithFuncCallback(sReflowContinueCallback, this, 30,
|
|
nsITimer::TYPE_ONE_SHOT))) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
PresShell::DoReflow(nsIFrame* target, bool aInterruptible)
|
|
{
|
|
if (mIsZombie) {
|
|
return true;
|
|
}
|
|
|
|
target->SchedulePaint();
|
|
nsIFrame *parent = nsLayoutUtils::GetCrossDocParentFrame(target);
|
|
while (parent) {
|
|
nsSVGEffects::InvalidateDirectRenderingObservers(parent);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(parent);
|
|
}
|
|
|
|
nsAutoCString docURL("N/A");
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri)
|
|
uri->GetSpec(docURL);
|
|
PROFILER_LABEL_PRINTF("layout", "DoReflow", "(%s)", docURL.get());
|
|
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nullptr;
|
|
}
|
|
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
|
|
nsRefPtr<nsRenderingContext> rcx = GetReferenceRenderingContext();
|
|
if (!rcx) {
|
|
NS_NOTREACHED("CreateRenderingContext failure");
|
|
return false;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = target;
|
|
#endif
|
|
|
|
target->WillReflow(mPresContext);
|
|
|
|
// If the target frame is the root of the frame hierarchy, then
|
|
// use all the available space. If it's simply a `reflow root',
|
|
// then use the target frame's size as the available space.
|
|
nsSize size;
|
|
if (target == rootFrame) {
|
|
size = mPresContext->GetVisibleArea().Size();
|
|
} else {
|
|
size = target->GetSize();
|
|
}
|
|
|
|
NS_ASSERTION(!target->GetNextInFlow() && !target->GetPrevInFlow(),
|
|
"reflow roots should never split");
|
|
|
|
// Don't pass size directly to the reflow state, since a
|
|
// constrained height implies page/column breaking.
|
|
nsSize reflowSize(size.width, NS_UNCONSTRAINEDSIZE);
|
|
nsHTMLReflowState reflowState(mPresContext, target, rcx, reflowSize);
|
|
|
|
if (rootFrame == target) {
|
|
// When the root frame is being reflowed with unconstrained height
|
|
// (which happens when we're called from
|
|
// nsDocumentViewer::SizeToContent), we're effectively doing a
|
|
// vertical resize, since it changes the meaning of percentage
|
|
// heights even if no heights actually changed. The same applies
|
|
// when we reflow again after that computation. This is an unusual
|
|
// case, and isn't caught by nsHTMLReflowState::InitResizeFlags.
|
|
bool hasUnconstrainedHeight = size.height == NS_UNCONSTRAINEDSIZE;
|
|
|
|
if (hasUnconstrainedHeight || mLastRootReflowHadUnconstrainedHeight) {
|
|
reflowState.mFlags.mVResize = true;
|
|
}
|
|
|
|
mLastRootReflowHadUnconstrainedHeight = hasUnconstrainedHeight;
|
|
}
|
|
|
|
// fix the computed height
|
|
NS_ASSERTION(reflowState.mComputedMargin == nsMargin(0, 0, 0, 0),
|
|
"reflow state should not set margin for reflow roots");
|
|
if (size.height != NS_UNCONSTRAINEDSIZE) {
|
|
nscoord computedHeight =
|
|
size.height - reflowState.mComputedBorderPadding.TopBottom();
|
|
computedHeight = std::max(computedHeight, 0);
|
|
reflowState.SetComputedHeight(computedHeight);
|
|
}
|
|
NS_ASSERTION(reflowState.ComputedWidth() ==
|
|
size.width -
|
|
reflowState.mComputedBorderPadding.LeftRight(),
|
|
"reflow state computed incorrect width");
|
|
|
|
mPresContext->ReflowStarted(aInterruptible);
|
|
mIsReflowing = true;
|
|
|
|
nsReflowStatus status;
|
|
nsHTMLReflowMetrics desiredSize;
|
|
target->Reflow(mPresContext, desiredSize, reflowState, status);
|
|
|
|
// If an incremental reflow is initiated at a frame other than the
|
|
// root frame, then its desired size had better not change! If it's
|
|
// initiated at the root, then the size better not change unless its
|
|
// height was unconstrained to start with.
|
|
nsRect boundsRelativeToTarget = nsRect(0, 0, desiredSize.width, desiredSize.height);
|
|
NS_ASSERTION((target == rootFrame && size.height == NS_UNCONSTRAINEDSIZE) ||
|
|
(desiredSize.width == size.width &&
|
|
desiredSize.height == size.height),
|
|
"non-root frame's desired size changed during an "
|
|
"incremental reflow");
|
|
NS_ASSERTION(target == rootFrame ||
|
|
desiredSize.VisualOverflow().IsEqualInterior(boundsRelativeToTarget),
|
|
"non-root reflow roots must not have visible overflow");
|
|
NS_ASSERTION(target == rootFrame ||
|
|
desiredSize.ScrollableOverflow().IsEqualEdges(boundsRelativeToTarget),
|
|
"non-root reflow roots must not have scrollable overflow");
|
|
NS_ASSERTION(status == NS_FRAME_COMPLETE,
|
|
"reflow roots should never split");
|
|
|
|
target->SetSize(boundsRelativeToTarget.Size());
|
|
|
|
// Always use boundsRelativeToTarget here, not desiredSize.GetVisualOverflowArea(),
|
|
// because for root frames (where they could be different, since root frames
|
|
// are allowed to have overflow) the root view bounds need to match the
|
|
// viewport bounds; the view manager "window dimensions" code depends on it.
|
|
nsContainerFrame::SyncFrameViewAfterReflow(mPresContext, target,
|
|
target->GetView(),
|
|
boundsRelativeToTarget);
|
|
nsContainerFrame::SyncWindowProperties(mPresContext, target,
|
|
target->GetView(), rcx);
|
|
|
|
target->DidReflow(mPresContext, nullptr, nsDidReflowStatus::FINISHED);
|
|
if (target == rootFrame && size.height == NS_UNCONSTRAINEDSIZE) {
|
|
mPresContext->SetVisibleArea(boundsRelativeToTarget);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = nullptr;
|
|
#endif
|
|
|
|
NS_ASSERTION(mPresContext->HasPendingInterrupt() ||
|
|
mFramesToDirty.Count() == 0,
|
|
"Why do we need to dirty anything if not interrupted?");
|
|
|
|
mIsReflowing = false;
|
|
bool interrupted = mPresContext->HasPendingInterrupt();
|
|
if (interrupted) {
|
|
// Make sure target gets reflowed again.
|
|
mFramesToDirty.EnumerateEntries(&MarkFramesDirtyToRoot, target);
|
|
NS_ASSERTION(NS_SUBTREE_DIRTY(target), "Why is the target not dirty?");
|
|
mDirtyRoots.AppendElement(target);
|
|
mDocument->SetNeedLayoutFlush();
|
|
|
|
// Clear mFramesToDirty after we've done the NS_SUBTREE_DIRTY(target)
|
|
// assertion so that if it fails it's easier to see what's going on.
|
|
#ifdef NOISY_INTERRUPTIBLE_REFLOW
|
|
printf("mFramesToDirty.Count() == %u\n", mFramesToDirty.Count());
|
|
#endif /* NOISY_INTERRUPTIBLE_REFLOW */
|
|
mFramesToDirty.Clear();
|
|
|
|
// Any FlushPendingNotifications with interruptible reflows
|
|
// should be suppressed now. We don't want to do extra reflow work
|
|
// before our reflow event happens.
|
|
mSuppressInterruptibleReflows = true;
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
PresShell::DoVerifyReflow()
|
|
{
|
|
if (GetVerifyReflowEnable()) {
|
|
// First synchronously render what we have so far so that we can
|
|
// see it.
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
mViewManager->InvalidateView(rootView);
|
|
|
|
FlushPendingNotifications(Flush_Layout);
|
|
mInVerifyReflow = true;
|
|
bool ok = VerifyIncrementalReflow();
|
|
mInVerifyReflow = false;
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: finished (%s)\n",
|
|
ok ? "ok" : "failed");
|
|
}
|
|
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
printf("XXX yikes! reflow commands queued during verify-reflow\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
PresShell::ProcessReflowCommands(bool aInterruptible)
|
|
{
|
|
if (mDirtyRoots.IsEmpty() && !mShouldUnsuppressPainting) {
|
|
// Nothing to do; bail out
|
|
return true;
|
|
}
|
|
|
|
mozilla::TimeStamp timerStart = mozilla::TimeStamp::Now();
|
|
bool interrupted = false;
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: begin incremental reflow\n");
|
|
}
|
|
#endif
|
|
|
|
// If reflow is interruptible, then make a note of our deadline.
|
|
const PRIntervalTime deadline = aInterruptible
|
|
? PR_IntervalNow() + PR_MicrosecondsToInterval(gMaxRCProcessingTime)
|
|
: (PRIntervalTime)0;
|
|
|
|
// Scope for the reflow entry point
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
WillDoReflow();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
|
|
nsViewManager::AutoDisableRefresh refreshBlocker(mViewManager);
|
|
|
|
do {
|
|
// Send an incremental reflow notification to the target frame.
|
|
int32_t idx = mDirtyRoots.Length() - 1;
|
|
nsIFrame *target = mDirtyRoots[idx];
|
|
mDirtyRoots.RemoveElementAt(idx);
|
|
|
|
if (!NS_SUBTREE_DIRTY(target)) {
|
|
// It's not dirty anymore, which probably means the notification
|
|
// was posted in the middle of a reflow (perhaps with a reflow
|
|
// root in the middle). Don't do anything.
|
|
continue;
|
|
}
|
|
|
|
interrupted = !DoReflow(target, aInterruptible);
|
|
|
|
// Keep going until we're out of reflow commands, or we've run
|
|
// past our deadline, or we're interrupted.
|
|
} while (!interrupted && !mDirtyRoots.IsEmpty() &&
|
|
(!aInterruptible || PR_IntervalNow() < deadline));
|
|
|
|
interrupted = !mDirtyRoots.IsEmpty();
|
|
}
|
|
|
|
// Exiting the scriptblocker might have killed us
|
|
if (!mIsDestroying) {
|
|
DidDoReflow(aInterruptible, interrupted);
|
|
}
|
|
|
|
// DidDoReflow might have killed us
|
|
if (!mIsDestroying) {
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf("\nPresShell::ProcessReflowCommands() finished: this=%p\n",
|
|
(void*)this);
|
|
}
|
|
DoVerifyReflow();
|
|
#endif
|
|
|
|
// If any new reflow commands were enqueued during the reflow, schedule
|
|
// another reflow event to process them. Note that we want to do this
|
|
// after DidDoReflow(), since that method can change whether there are
|
|
// dirty roots around by flushing, and there's no point in posting a
|
|
// reflow event just to have the flush revoke it.
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
MaybeScheduleReflow();
|
|
// And tell our document that we might need flushing
|
|
mDocument->SetNeedLayoutFlush();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mIsDestroying && mShouldUnsuppressPainting &&
|
|
mDirtyRoots.IsEmpty()) {
|
|
// We only unlock if we're out of reflows. It's pointless
|
|
// to unlock if reflows are still pending, since reflows
|
|
// are just going to thrash the frames around some more. By
|
|
// waiting we avoid an overeager "jitter" effect.
|
|
mShouldUnsuppressPainting = false;
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
if (mDocument->GetRootElement()) {
|
|
Telemetry::ID id;
|
|
if (mDocument->GetRootElement()->IsXUL()) {
|
|
id = mIsActive
|
|
? Telemetry::XUL_FOREGROUND_REFLOW_MS
|
|
: Telemetry::XUL_BACKGROUND_REFLOW_MS;
|
|
} else {
|
|
id = mIsActive
|
|
? Telemetry::HTML_FOREGROUND_REFLOW_MS
|
|
: Telemetry::HTML_BACKGROUND_REFLOW_MS;
|
|
}
|
|
Telemetry::AccumulateTimeDelta(id, timerStart);
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
void
|
|
PresShell::WindowSizeMoveDone()
|
|
{
|
|
if (mPresContext) {
|
|
nsEventStateManager::ClearGlobalActiveContent(nullptr);
|
|
ClearMouseCapture(nullptr);
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
/*
|
|
* It's better to add stuff to the |DidSetStyleContext| method of the
|
|
* relevant frames than adding it here. These methods should (ideally,
|
|
* anyway) go away.
|
|
*/
|
|
|
|
// Return value says whether to walk children.
|
|
typedef bool (* frameWalkerFn)(nsIFrame *aFrame, void *aClosure);
|
|
|
|
static bool
|
|
ReResolveMenusAndTrees(nsIFrame *aFrame, void *aClosure)
|
|
{
|
|
// Trees have a special style cache that needs to be flushed when
|
|
// the theme changes.
|
|
nsTreeBodyFrame *treeBody = do_QueryFrame(aFrame);
|
|
if (treeBody)
|
|
treeBody->ClearStyleAndImageCaches();
|
|
|
|
// We deliberately don't re-resolve style on a menu's popup
|
|
// sub-content, since doing so slows menus to a crawl. That means we
|
|
// have to special-case them on a skin switch, and ensure that the
|
|
// popup frames just get destroyed completely.
|
|
nsMenuFrame* menu = do_QueryFrame(aFrame);
|
|
if (menu)
|
|
menu->CloseMenu(true);
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
ReframeImageBoxes(nsIFrame *aFrame, void *aClosure)
|
|
{
|
|
nsStyleChangeList *list = static_cast<nsStyleChangeList*>(aClosure);
|
|
if (aFrame->GetType() == nsGkAtoms::imageBoxFrame) {
|
|
list->AppendChange(aFrame, aFrame->GetContent(),
|
|
NS_STYLE_HINT_FRAMECHANGE);
|
|
return false; // don't walk descendants
|
|
}
|
|
return true; // walk descendants
|
|
}
|
|
|
|
static void
|
|
WalkFramesThroughPlaceholders(nsPresContext *aPresContext, nsIFrame *aFrame,
|
|
frameWalkerFn aFunc, void *aClosure)
|
|
{
|
|
bool walkChildren = (*aFunc)(aFrame, aClosure);
|
|
if (!walkChildren)
|
|
return;
|
|
|
|
nsIFrame::ChildListIterator lists(aFrame);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* child = childFrames.get();
|
|
if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that are in flow, and recur through the
|
|
// out-of-flows of placeholders.
|
|
WalkFramesThroughPlaceholders(aPresContext,
|
|
nsPlaceholderFrame::GetRealFrameFor(child),
|
|
aFunc, aClosure);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::Observe(nsISupports* aSubject,
|
|
const char* aTopic,
|
|
const PRUnichar* aData)
|
|
{
|
|
#ifdef MOZ_XUL
|
|
if (!nsCRT::strcmp(aTopic, "chrome-flush-skin-caches")) {
|
|
nsIFrame *rootFrame = mFrameConstructor->GetRootFrame();
|
|
// Need to null-check because "chrome-flush-skin-caches" can happen
|
|
// at interesting times during startup.
|
|
if (rootFrame) {
|
|
NS_ASSERTION(mViewManager, "View manager must exist");
|
|
|
|
nsWeakFrame weakRoot(rootFrame);
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
mDocument->FlushPendingNotifications(Flush_ContentAndNotify);
|
|
|
|
if (weakRoot.IsAlive()) {
|
|
WalkFramesThroughPlaceholders(mPresContext, rootFrame,
|
|
&ReResolveMenusAndTrees, nullptr);
|
|
|
|
// Because "chrome:" URL equality is messy, reframe image box
|
|
// frames (hack!).
|
|
nsStyleChangeList changeList;
|
|
WalkFramesThroughPlaceholders(mPresContext, rootFrame,
|
|
ReframeImageBoxes, &changeList);
|
|
// Mark ourselves as not safe to flush while we're doing frame
|
|
// construction.
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
++mChangeNestCount;
|
|
RestyleManager* restyleManager = mPresContext->RestyleManager();
|
|
restyleManager->ProcessRestyledFrames(changeList);
|
|
restyleManager->FlushOverflowChangedTracker();
|
|
--mChangeNestCount;
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
if (!nsCRT::strcmp(aTopic, "agent-sheet-added") && mStyleSet) {
|
|
AddAgentSheet(aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "user-sheet-added") && mStyleSet) {
|
|
AddUserSheet(aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "author-sheet-added") && mStyleSet) {
|
|
AddAuthorSheet(aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "agent-sheet-removed") && mStyleSet) {
|
|
RemoveSheet(nsStyleSet::eAgentSheet, aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "user-sheet-removed") && mStyleSet) {
|
|
RemoveSheet(nsStyleSet::eUserSheet, aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "author-sheet-removed") && mStyleSet) {
|
|
RemoveSheet(nsStyleSet::eDocSheet, aSubject);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_WARNING("unrecognized topic in PresShell::Observe");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::AddRefreshObserverInternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext &&
|
|
presContext->RefreshDriver()->AddRefreshObserver(aObserver, aFlushType);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsIPresShell::AddRefreshObserverExternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
return AddRefreshObserverInternal(aObserver, aFlushType);
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::RemoveRefreshObserverInternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext &&
|
|
presContext->RefreshDriver()->RemoveRefreshObserver(aObserver, aFlushType);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsIPresShell::RemoveRefreshObserverExternal(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
return RemoveRefreshObserverInternal(aObserver, aFlushType);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsIPresShell::AddPostRefreshObserver(nsAPostRefreshObserver* aObserver)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (!presContext) {
|
|
return false;
|
|
}
|
|
presContext->RefreshDriver()->AddPostRefreshObserver(aObserver);
|
|
return true;
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsIPresShell::RemovePostRefreshObserver(nsAPostRefreshObserver* aObserver)
|
|
{
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (!presContext) {
|
|
return false;
|
|
}
|
|
presContext->RefreshDriver()->RemovePostRefreshObserver(aObserver);
|
|
return true;
|
|
}
|
|
|
|
//------------------------------------------------------
|
|
// End of protected and private methods on the PresShell
|
|
//------------------------------------------------------
|
|
|
|
// Start of DEBUG only code
|
|
|
|
#ifdef DEBUG
|
|
|
|
static void
|
|
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg)
|
|
{
|
|
nsAutoString n1, n2;
|
|
if (k1) {
|
|
k1->GetFrameName(n1);
|
|
} else {
|
|
n1.Assign(NS_LITERAL_STRING("(null)"));
|
|
}
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(n2);
|
|
} else {
|
|
n2.Assign(NS_LITERAL_STRING("(null)"));
|
|
}
|
|
|
|
printf("verifyreflow: %s %p != %s %p %s\n",
|
|
NS_LossyConvertUTF16toASCII(n1).get(), (void*)k1,
|
|
NS_LossyConvertUTF16toASCII(n2).get(), (void*)k2, aMsg);
|
|
}
|
|
|
|
static void
|
|
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
|
|
const nsRect& r1, const nsRect& r2)
|
|
{
|
|
printf("VerifyReflow Error:\n");
|
|
nsAutoString name;
|
|
|
|
if (k1) {
|
|
k1->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
|
|
}
|
|
printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
|
|
}
|
|
printf("{%d, %d, %d, %d}\n %s\n",
|
|
r2.x, r2.y, r2.width, r2.height, aMsg);
|
|
}
|
|
|
|
static void
|
|
LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
|
|
const nsIntRect& r1, const nsIntRect& r2)
|
|
{
|
|
printf("VerifyReflow Error:\n");
|
|
nsAutoString name;
|
|
|
|
if (k1) {
|
|
k1->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
|
|
}
|
|
printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
|
|
}
|
|
printf("{%d, %d, %d, %d}\n %s\n",
|
|
r2.x, r2.y, r2.width, r2.height, aMsg);
|
|
}
|
|
|
|
static bool
|
|
CompareTrees(nsPresContext* aFirstPresContext, nsIFrame* aFirstFrame,
|
|
nsPresContext* aSecondPresContext, nsIFrame* aSecondFrame)
|
|
{
|
|
if (!aFirstPresContext || !aFirstFrame || !aSecondPresContext || !aSecondFrame)
|
|
return true;
|
|
// XXX Evil hack to reduce false positives; I can't seem to figure
|
|
// out how to flush scrollbar changes correctly
|
|
//if (aFirstFrame->GetType() == nsGkAtoms::scrollbarFrame)
|
|
// return true;
|
|
bool ok = true;
|
|
nsIFrame::ChildListIterator lists1(aFirstFrame);
|
|
nsIFrame::ChildListIterator lists2(aSecondFrame);
|
|
do {
|
|
const nsFrameList& kids1 = !lists1.IsDone() ? lists1.CurrentList() : nsFrameList();
|
|
const nsFrameList& kids2 = !lists2.IsDone() ? lists2.CurrentList() : nsFrameList();
|
|
int32_t l1 = kids1.GetLength();
|
|
int32_t l2 = kids2.GetLength();;
|
|
if (l1 != l2) {
|
|
ok = false;
|
|
LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
|
|
"child counts don't match: ");
|
|
printf("%d != %d\n", l1, l2);
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
nsIntRect r1, r2;
|
|
nsView* v1, *v2;
|
|
for (nsFrameList::Enumerator e1(kids1), e2(kids2);
|
|
;
|
|
e1.Next(), e2.Next()) {
|
|
nsIFrame* k1 = e1.get();
|
|
nsIFrame* k2 = e2.get();
|
|
if (((nullptr == k1) && (nullptr != k2)) ||
|
|
((nullptr != k1) && (nullptr == k2))) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "child lists are different\n");
|
|
break;
|
|
}
|
|
else if (nullptr != k1) {
|
|
// Verify that the frames are the same size
|
|
if (!k1->GetRect().IsEqualInterior(k2->GetRect())) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "(frame rects)", k1->GetRect(), k2->GetRect());
|
|
}
|
|
|
|
// Make sure either both have views or neither have views; if they
|
|
// do have views, make sure the views are the same size. If the
|
|
// views have widgets, make sure they both do or neither does. If
|
|
// they do, make sure the widgets are the same size.
|
|
v1 = k1->GetView();
|
|
v2 = k2->GetView();
|
|
if (((nullptr == v1) && (nullptr != v2)) ||
|
|
((nullptr != v1) && (nullptr == v2))) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "child views are not matched\n");
|
|
}
|
|
else if (nullptr != v1) {
|
|
if (!v1->GetBounds().IsEqualInterior(v2->GetBounds())) {
|
|
LogVerifyMessage(k1, k2, "(view rects)", v1->GetBounds(), v2->GetBounds());
|
|
}
|
|
|
|
nsIWidget* w1 = v1->GetWidget();
|
|
nsIWidget* w2 = v2->GetWidget();
|
|
if (((nullptr == w1) && (nullptr != w2)) ||
|
|
((nullptr != w1) && (nullptr == w2))) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "child widgets are not matched\n");
|
|
}
|
|
else if (nullptr != w1) {
|
|
w1->GetBounds(r1);
|
|
w2->GetBounds(r2);
|
|
if (!r1.IsEqualEdges(r2)) {
|
|
LogVerifyMessage(k1, k2, "(widget rects)", r1, r2);
|
|
}
|
|
}
|
|
}
|
|
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
|
|
break;
|
|
}
|
|
|
|
// XXX Should perhaps compare their float managers.
|
|
|
|
// Compare the sub-trees too
|
|
if (!CompareTrees(aFirstPresContext, k1, aSecondPresContext, k2)) {
|
|
ok = false;
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
|
|
break;
|
|
}
|
|
|
|
lists1.Next();
|
|
lists2.Next();
|
|
if (lists1.IsDone() != lists2.IsDone() ||
|
|
(!lists1.IsDone() && lists1.CurrentID() != lists2.CurrentID())) {
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
ok = false;
|
|
}
|
|
LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
|
|
"child list names are not matched: ");
|
|
fprintf(stdout, "%s != %s\n",
|
|
!lists1.IsDone() ? mozilla::layout::ChildListName(lists1.CurrentID()) : "(null)",
|
|
!lists2.IsDone() ? mozilla::layout::ChildListName(lists2.CurrentID()) : "(null)");
|
|
break;
|
|
}
|
|
} while (ok && !lists1.IsDone());
|
|
|
|
return ok;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
static nsIFrame*
|
|
FindTopFrame(nsIFrame* aRoot)
|
|
{
|
|
if (aRoot) {
|
|
nsIContent* content = aRoot->GetContent();
|
|
if (content) {
|
|
nsIAtom* tag;
|
|
content->GetTag(tag);
|
|
if (nullptr != tag) {
|
|
NS_RELEASE(tag);
|
|
return aRoot;
|
|
}
|
|
}
|
|
|
|
// Try one of the children
|
|
nsIFrame* kid = aRoot->GetFirstPrincipalChild();
|
|
while (nullptr != kid) {
|
|
nsIFrame* result = FindTopFrame(kid);
|
|
if (nullptr != result) {
|
|
return result;
|
|
}
|
|
kid = kid->GetNextSibling();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
nsStyleSet*
|
|
PresShell::CloneStyleSet(nsStyleSet* aSet)
|
|
{
|
|
nsStyleSet *clone = new nsStyleSet();
|
|
|
|
int32_t i, n = aSet->SheetCount(nsStyleSet::eOverrideSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eOverrideSheet, i);
|
|
if (ss)
|
|
clone->AppendStyleSheet(nsStyleSet::eOverrideSheet, ss);
|
|
}
|
|
|
|
// The document expects to insert document stylesheets itself
|
|
#if 0
|
|
n = aSet->SheetCount(nsStyleSet::eDocSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eDocSheet, i);
|
|
if (ss)
|
|
clone->AddDocStyleSheet(ss, mDocument);
|
|
}
|
|
#endif
|
|
|
|
n = aSet->SheetCount(nsStyleSet::eUserSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eUserSheet, i);
|
|
if (ss)
|
|
clone->AppendStyleSheet(nsStyleSet::eUserSheet, ss);
|
|
}
|
|
|
|
n = aSet->SheetCount(nsStyleSet::eAgentSheet);
|
|
for (i = 0; i < n; i++) {
|
|
nsIStyleSheet* ss = aSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
|
|
if (ss)
|
|
clone->AppendStyleSheet(nsStyleSet::eAgentSheet, ss);
|
|
}
|
|
return clone;
|
|
}
|
|
|
|
#ifdef DEBUG_Eli
|
|
static nsresult
|
|
DumpToPNG(nsIPresShell* shell, nsAString& name) {
|
|
int32_t width=1000, height=1000;
|
|
nsRect r(0, 0, shell->GetPresContext()->DevPixelsToAppUnits(width),
|
|
shell->GetPresContext()->DevPixelsToAppUnits(height));
|
|
|
|
nsRefPtr<gfxImageSurface> imgSurface =
|
|
new gfxImageSurface(gfxIntSize(width, height),
|
|
gfxImageFormatARGB32);
|
|
|
|
nsRefPtr<gfxContext> imgContext = new gfxContext(imgSurface);
|
|
|
|
nsRefPtr<gfxASurface> surface =
|
|
gfxPlatform::GetPlatform()->
|
|
CreateOffscreenSurface(gfxIntSize(width, height),
|
|
gfxASurface::ContentFromFormat(gfxImageFormatARGB32));
|
|
NS_ENSURE_TRUE(surface, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
nsRefPtr<gfxContext> context = new gfxContext(surface);
|
|
|
|
shell->RenderDocument(r, 0, NS_RGB(255, 255, 0), context);
|
|
|
|
imgContext->DrawSurface(surface, gfxSize(width, height));
|
|
|
|
nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/png");
|
|
NS_ENSURE_TRUE(encoder, NS_ERROR_FAILURE);
|
|
encoder->InitFromData(imgSurface->Data(), imgSurface->Stride() * height,
|
|
width, height, imgSurface->Stride(),
|
|
imgIEncoder::INPUT_FORMAT_HOSTARGB, EmptyString());
|
|
|
|
// XXX not sure if this is the right way to write to a file
|
|
nsCOMPtr<nsIFile> file = do_CreateInstance("@mozilla.org/file/local;1");
|
|
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
|
|
rv = file->InitWithPath(name);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint64_t length64;
|
|
rv = encoder->Available(&length64);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (length64 > UINT32_MAX)
|
|
return NS_ERROR_FILE_TOO_BIG;
|
|
|
|
uint32_t length = (uint32_t)length64;
|
|
|
|
nsCOMPtr<nsIOutputStream> outputStream;
|
|
rv = NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), file);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIOutputStream> bufferedOutputStream;
|
|
rv = NS_NewBufferedOutputStream(getter_AddRefs(bufferedOutputStream),
|
|
outputStream, length);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t numWritten;
|
|
rv = bufferedOutputStream->WriteFrom(encoder, length, &numWritten);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
// After an incremental reflow, we verify the correctness by doing a
|
|
// full reflow into a fresh frame tree.
|
|
bool
|
|
PresShell::VerifyIncrementalReflow()
|
|
{
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Building Verification Tree...\n");
|
|
}
|
|
|
|
// Create a presentation context to view the new frame tree
|
|
nsRefPtr<nsPresContext> cx =
|
|
new nsRootPresContext(mDocument, mPresContext->IsPaginated() ?
|
|
nsPresContext::eContext_PrintPreview :
|
|
nsPresContext::eContext_Galley);
|
|
NS_ENSURE_TRUE(cx, false);
|
|
|
|
nsDeviceContext *dc = mPresContext->DeviceContext();
|
|
nsresult rv = cx->Init(dc);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// Get our scrolling preference
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
NS_ENSURE_TRUE(rootView->HasWidget(), false);
|
|
nsIWidget* parentWidget = rootView->GetWidget();
|
|
|
|
// Create a new view manager.
|
|
nsRefPtr<nsViewManager> vm = new nsViewManager();
|
|
NS_ENSURE_TRUE(vm, false);
|
|
rv = vm->Init(dc);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// Create a child window of the parent that is our "root view/window"
|
|
// Create a view
|
|
nsRect tbounds = mPresContext->GetVisibleArea();
|
|
nsView* view = vm->CreateView(tbounds, nullptr);
|
|
NS_ENSURE_TRUE(view, false);
|
|
|
|
//now create the widget for the view
|
|
rv = view->CreateWidgetForParent(parentWidget, nullptr, true);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// Setup hierarchical relationship in view manager
|
|
vm->SetRootView(view);
|
|
|
|
// Make the new presentation context the same size as our
|
|
// presentation context.
|
|
nsRect r = mPresContext->GetVisibleArea();
|
|
cx->SetVisibleArea(r);
|
|
|
|
// Create a new presentation shell to view the document. Use the
|
|
// exact same style information that this document has.
|
|
nsAutoPtr<nsStyleSet> newSet(CloneStyleSet(mStyleSet));
|
|
nsCOMPtr<nsIPresShell> sh = mDocument->CreateShell(cx, vm, newSet);
|
|
NS_ENSURE_TRUE(sh, false);
|
|
newSet.forget();
|
|
// Note that after we create the shell, we must make sure to destroy it
|
|
sh->SetVerifyReflowEnable(false); // turn off verify reflow while we're reflowing the test frame tree
|
|
vm->SetPresShell(sh);
|
|
{
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
sh->Initialize(r.width, r.height);
|
|
}
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
sh->FlushPendingNotifications(Flush_Layout);
|
|
sh->SetVerifyReflowEnable(true); // turn on verify reflow again now that we're done reflowing the test frame tree
|
|
// Force the non-primary presshell to unsuppress; it doesn't want to normally
|
|
// because it thinks it's hidden
|
|
((PresShell*)sh.get())->mPaintingSuppressed = false;
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Verification Tree built, comparing...\n");
|
|
}
|
|
|
|
// Now that the document has been reflowed, use its frame tree to
|
|
// compare against our frame tree.
|
|
nsIFrame* root1 = mFrameConstructor->GetRootFrame();
|
|
nsIFrame* root2 = sh->GetRootFrame();
|
|
bool ok = CompareTrees(mPresContext, root1, cx, root2);
|
|
if (!ok && (VERIFY_REFLOW_NOISY & gVerifyReflowFlags)) {
|
|
printf("Verify reflow failed, primary tree:\n");
|
|
root1->List(stdout, 0);
|
|
printf("Verification tree:\n");
|
|
root2->List(stdout, 0);
|
|
}
|
|
|
|
#ifdef DEBUG_Eli
|
|
// Sample code for dumping page to png
|
|
// XXX Needs to be made more flexible
|
|
if (!ok) {
|
|
nsString stra;
|
|
static int num = 0;
|
|
stra.AppendLiteral("C:\\mozilla\\mozilla\\debug\\filea");
|
|
stra.AppendInt(num);
|
|
stra.AppendLiteral(".png");
|
|
DumpToPNG(sh, stra);
|
|
nsString strb;
|
|
strb.AppendLiteral("C:\\mozilla\\mozilla\\debug\\fileb");
|
|
strb.AppendInt(num);
|
|
strb.AppendLiteral(".png");
|
|
DumpToPNG(this, strb);
|
|
++num;
|
|
}
|
|
#endif
|
|
|
|
sh->EndObservingDocument();
|
|
sh->Destroy();
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Finished Verifying Reflow...\n");
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
// Layout debugging hooks
|
|
void
|
|
PresShell::ListStyleContexts(nsIFrame *aRootFrame, FILE *out, int32_t aIndent)
|
|
{
|
|
nsStyleContext *sc = aRootFrame->StyleContext();
|
|
if (sc)
|
|
sc->List(out, aIndent);
|
|
}
|
|
|
|
void
|
|
PresShell::ListStyleSheets(FILE *out, int32_t aIndent)
|
|
{
|
|
int32_t sheetCount = mStyleSet->SheetCount(nsStyleSet::eDocSheet);
|
|
for (int32_t i = 0; i < sheetCount; ++i) {
|
|
mStyleSet->StyleSheetAt(nsStyleSet::eDocSheet, i)->List(out, aIndent);
|
|
fputs("\n", out);
|
|
}
|
|
}
|
|
|
|
void
|
|
PresShell::VerifyStyleTree()
|
|
{
|
|
VERIFY_STYLE_TREE;
|
|
}
|
|
#endif
|
|
|
|
//=============================================================
|
|
//=============================================================
|
|
//-- Debug Reflow Counts
|
|
//=============================================================
|
|
//=============================================================
|
|
#ifdef MOZ_REFLOW_PERF
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::DumpReflows()
|
|
{
|
|
if (mReflowCountMgr) {
|
|
nsAutoCString uriStr;
|
|
if (mDocument) {
|
|
nsIURI *uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
uri->GetPath(uriStr);
|
|
}
|
|
}
|
|
mReflowCountMgr->DisplayTotals(uriStr.get());
|
|
mReflowCountMgr->DisplayHTMLTotals(uriStr.get());
|
|
mReflowCountMgr->DisplayDiffsInTotals("Differences");
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::CountReflows(const char * aName, nsIFrame * aFrame)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->Add(aName, aFrame);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::PaintCount(const char * aName,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame * aFrame,
|
|
const nsPoint& aOffset,
|
|
uint32_t aColor)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->PaintCount(aName, aRenderingContext, aPresContext,
|
|
aFrame, aOffset, aColor);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void
|
|
PresShell::SetPaintFrameCount(bool aPaintFrameCounts)
|
|
{
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->SetPaintFrameCounts(aPaintFrameCounts);
|
|
}
|
|
}
|
|
|
|
bool
|
|
PresShell::IsPaintingFrameCounts()
|
|
{
|
|
if (mReflowCountMgr)
|
|
return mReflowCountMgr->IsPaintingFrameCounts();
|
|
return false;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
//-- Reflow Counter Classes Impls
|
|
//------------------------------------------------------------------
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter::ReflowCounter(ReflowCountMgr * aMgr) :
|
|
mMgr(aMgr)
|
|
{
|
|
ClearTotals();
|
|
SetTotalsCache();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter::~ReflowCounter()
|
|
{
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::ClearTotals()
|
|
{
|
|
mTotal = 0;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::SetTotalsCache()
|
|
{
|
|
mCacheTotal = mTotal;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::CalcDiffInTotals()
|
|
{
|
|
mCacheTotal = mTotal - mCacheTotal;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayTotals(const char * aStr)
|
|
{
|
|
DisplayTotals(mTotal, aStr?aStr:"Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayDiffTotals(const char * aStr)
|
|
{
|
|
DisplayTotals(mCacheTotal, aStr?aStr:"Diff Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayHTMLTotals(const char * aStr)
|
|
{
|
|
DisplayHTMLTotals(mTotal, aStr?aStr:"Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayTotals(uint32_t aTotal, const char * aTitle)
|
|
{
|
|
// figure total
|
|
if (aTotal == 0) {
|
|
return;
|
|
}
|
|
ReflowCounter * gTots = (ReflowCounter *)mMgr->LookUp(kGrandTotalsStr);
|
|
|
|
printf("%25s\t", aTitle);
|
|
printf("%d\t", aTotal);
|
|
if (gTots != this && aTotal > 0) {
|
|
gTots->Add(aTotal);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayHTMLTotals(uint32_t aTotal, const char * aTitle)
|
|
{
|
|
if (aTotal == 0) {
|
|
return;
|
|
}
|
|
|
|
ReflowCounter * gTots = (ReflowCounter *)mMgr->LookUp(kGrandTotalsStr);
|
|
FILE * fd = mMgr->GetOutFile();
|
|
if (!fd) {
|
|
return;
|
|
}
|
|
|
|
fprintf(fd, "<tr><td><center>%s</center></td>", aTitle);
|
|
fprintf(fd, "<td><center>%d</center></td></tr>\n", aTotal);
|
|
|
|
if (gTots != this && aTotal > 0) {
|
|
gTots->Add(aTotal);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
//-- ReflowCountMgr
|
|
//------------------------------------------------------------------
|
|
|
|
#define KEY_BUF_SIZE_FOR_PTR 24 // adequate char[] buffer to sprintf a pointer
|
|
|
|
ReflowCountMgr::ReflowCountMgr()
|
|
{
|
|
mCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings,
|
|
PL_CompareValues, nullptr, nullptr);
|
|
mIndiFrameCounts = PL_NewHashTable(10, PL_HashString, PL_CompareStrings,
|
|
PL_CompareValues, nullptr, nullptr);
|
|
mCycledOnce = false;
|
|
mDumpFrameCounts = false;
|
|
mDumpFrameByFrameCounts = false;
|
|
mPaintFrameByFrameCounts = false;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCountMgr::~ReflowCountMgr()
|
|
{
|
|
CleanUp();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter * ReflowCountMgr::LookUp(const char * aName)
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName);
|
|
return counter;
|
|
}
|
|
return nullptr;
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::Add(const char * aName, nsIFrame * aFrame)
|
|
{
|
|
NS_ASSERTION(aName != nullptr, "Name shouldn't be null!");
|
|
|
|
if (mDumpFrameCounts && nullptr != mCounts) {
|
|
ReflowCounter * counter = (ReflowCounter *)PL_HashTableLookup(mCounts, aName);
|
|
if (counter == nullptr) {
|
|
counter = new ReflowCounter(this);
|
|
char * name = NS_strdup(aName);
|
|
NS_ASSERTION(name != nullptr, "null ptr");
|
|
PL_HashTableAdd(mCounts, name, counter);
|
|
}
|
|
counter->Add();
|
|
}
|
|
|
|
if ((mDumpFrameByFrameCounts || mPaintFrameByFrameCounts) &&
|
|
nullptr != mIndiFrameCounts &&
|
|
aFrame != nullptr) {
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
sprintf(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
|
|
if (counter == nullptr) {
|
|
counter = new IndiReflowCounter(this);
|
|
counter->mFrame = aFrame;
|
|
counter->mName.AssignASCII(aName);
|
|
PL_HashTableAdd(mIndiFrameCounts, NS_strdup(key), counter);
|
|
}
|
|
// this eliminates extra counts from super classes
|
|
if (counter != nullptr && counter->mName.EqualsASCII(aName)) {
|
|
counter->mCount++;
|
|
counter->mCounter.Add(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::PaintCount(const char* aName,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
const nsPoint& aOffset,
|
|
uint32_t aColor)
|
|
{
|
|
if (mPaintFrameByFrameCounts &&
|
|
nullptr != mIndiFrameCounts &&
|
|
aFrame != nullptr) {
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
sprintf(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter * counter =
|
|
(IndiReflowCounter *)PL_HashTableLookup(mIndiFrameCounts, key);
|
|
if (counter != nullptr && counter->mName.EqualsASCII(aName)) {
|
|
aRenderingContext->PushState();
|
|
aRenderingContext->Translate(aOffset);
|
|
nsFont font("Times", NS_FONT_STYLE_NORMAL, NS_FONT_VARIANT_NORMAL,
|
|
NS_FONT_WEIGHT_NORMAL, NS_FONT_STRETCH_NORMAL, 0,
|
|
nsPresContext::CSSPixelsToAppUnits(11));
|
|
|
|
nsRefPtr<nsFontMetrics> fm;
|
|
aPresContext->DeviceContext()->GetMetricsFor(font,
|
|
// We have one frame, therefore we must have a root...
|
|
aPresContext->GetPresShell()->GetRootFrame()->
|
|
StyleFont()->mLanguage,
|
|
aPresContext->GetUserFontSet(), *getter_AddRefs(fm));
|
|
|
|
aRenderingContext->SetFont(fm);
|
|
char buf[16];
|
|
sprintf(buf, "%d", counter->mCount);
|
|
nscoord x = 0, y = fm->MaxAscent();
|
|
nscoord width, height = fm->MaxHeight();
|
|
aRenderingContext->SetTextRunRTL(false);
|
|
width = aRenderingContext->GetWidth(buf);
|
|
|
|
uint32_t color;
|
|
uint32_t color2;
|
|
if (aColor != 0) {
|
|
color = aColor;
|
|
color2 = NS_RGB(0,0,0);
|
|
} else {
|
|
uint8_t rc = 0, gc = 0, bc = 0;
|
|
if (counter->mCount < 5) {
|
|
rc = 255;
|
|
gc = 255;
|
|
} else if ( counter->mCount < 11) {
|
|
gc = 255;
|
|
} else {
|
|
rc = 255;
|
|
}
|
|
color = NS_RGB(rc,gc,bc);
|
|
color2 = NS_RGB(rc/2,gc/2,bc/2);
|
|
}
|
|
|
|
nsRect rect(0,0, width+15, height+15);
|
|
aRenderingContext->SetColor(NS_RGB(0,0,0));
|
|
aRenderingContext->FillRect(rect);
|
|
aRenderingContext->SetColor(color2);
|
|
aRenderingContext->DrawString(buf, strlen(buf), x+15,y+15);
|
|
aRenderingContext->SetColor(color);
|
|
aRenderingContext->DrawString(buf, strlen(buf), x,y);
|
|
|
|
aRenderingContext->PopState();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::RemoveItems(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
delete counter;
|
|
NS_Free(str);
|
|
|
|
return HT_ENUMERATE_REMOVE;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::RemoveIndiItems(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)he->value;
|
|
delete counter;
|
|
NS_Free(str);
|
|
|
|
return HT_ENUMERATE_REMOVE;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::CleanUp()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
PL_HashTableEnumerateEntries(mCounts, RemoveItems, nullptr);
|
|
PL_HashTableDestroy(mCounts);
|
|
mCounts = nullptr;
|
|
}
|
|
|
|
if (nullptr != mIndiFrameCounts) {
|
|
PL_HashTableEnumerateEntries(mIndiFrameCounts, RemoveIndiItems, nullptr);
|
|
PL_HashTableDestroy(mIndiFrameCounts);
|
|
mIndiFrameCounts = nullptr;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoSingleTotal(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
counter->DisplayTotals(str);
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandTotals()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nullptr) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
}
|
|
|
|
printf("\t\t\t\tTotal\n");
|
|
for (uint32_t i=0;i<78;i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
PL_HashTableEnumerateEntries(mCounts, DoSingleTotal, this);
|
|
}
|
|
}
|
|
|
|
static void RecurseIndiTotals(nsPresContext* aPresContext,
|
|
PLHashTable * aHT,
|
|
nsIFrame * aParentFrame,
|
|
int32_t aLevel)
|
|
{
|
|
if (aParentFrame == nullptr) {
|
|
return;
|
|
}
|
|
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
sprintf(key, "%p", (void*)aParentFrame);
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)PL_HashTableLookup(aHT, key);
|
|
if (counter) {
|
|
counter->mHasBeenOutput = true;
|
|
char * name = ToNewCString(counter->mName);
|
|
for (int32_t i=0;i<aLevel;i++) printf(" ");
|
|
printf("%s - %p [%d][", name, (void*)aParentFrame, counter->mCount);
|
|
printf("%d", counter->mCounter.GetTotal());
|
|
printf("]\n");
|
|
nsMemory::Free(name);
|
|
}
|
|
|
|
nsIFrame* child = aParentFrame->GetFirstPrincipalChild();
|
|
while (child) {
|
|
RecurseIndiTotals(aPresContext, aHT, child, aLevel+1);
|
|
child = child->GetNextSibling();
|
|
}
|
|
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoSingleIndi(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
IndiReflowCounter * counter = (IndiReflowCounter *)he->value;
|
|
if (counter && !counter->mHasBeenOutput) {
|
|
char * name = ToNewCString(counter->mName);
|
|
printf("%s - %p [%d][", name, (void*)counter->mFrame, counter->mCount);
|
|
printf("%d", counter->mCounter.GetTotal());
|
|
printf("]\n");
|
|
nsMemory::Free(name);
|
|
}
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoIndiTotalsTree()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
printf("\n------------------------------------------------\n");
|
|
printf("-- Individual Frame Counts\n");
|
|
printf("------------------------------------------------\n");
|
|
|
|
if (mPresShell) {
|
|
nsIFrame * rootFrame = mPresShell->FrameManager()->GetRootFrame();
|
|
RecurseIndiTotals(mPresContext, mIndiFrameCounts, rootFrame, 0);
|
|
printf("------------------------------------------------\n");
|
|
printf("-- Individual Counts of Frames not in Root Tree\n");
|
|
printf("------------------------------------------------\n");
|
|
PL_HashTableEnumerateEntries(mIndiFrameCounts, DoSingleIndi, this);
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoSingleHTMLTotal(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
counter->DisplayHTMLTotals(str);
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandHTMLTotals()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nullptr) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
}
|
|
|
|
static const char * title[] = {"Class", "Reflows"};
|
|
fprintf(mFD, "<tr>");
|
|
for (uint32_t i=0; i < ArrayLength(title); i++) {
|
|
fprintf(mFD, "<td><center><b>%s<b></center></td>", title[i]);
|
|
}
|
|
fprintf(mFD, "</tr>\n");
|
|
PL_HashTableEnumerateEntries(mCounts, DoSingleHTMLTotal, this);
|
|
}
|
|
}
|
|
|
|
//------------------------------------
|
|
void ReflowCountMgr::DisplayTotals(const char * aStr)
|
|
{
|
|
#ifdef DEBUG_rods
|
|
printf("%s\n", aStr?aStr:"No name");
|
|
#endif
|
|
if (mDumpFrameCounts) {
|
|
DoGrandTotals();
|
|
}
|
|
if (mDumpFrameByFrameCounts) {
|
|
DoIndiTotalsTree();
|
|
}
|
|
|
|
}
|
|
//------------------------------------
|
|
void ReflowCountMgr::DisplayHTMLTotals(const char * aStr)
|
|
{
|
|
#ifdef WIN32x // XXX NOT XP!
|
|
char name[1024];
|
|
|
|
char * sptr = strrchr(aStr, '/');
|
|
if (sptr) {
|
|
sptr++;
|
|
strcpy(name, sptr);
|
|
char * eptr = strrchr(name, '.');
|
|
if (eptr) {
|
|
*eptr = 0;
|
|
}
|
|
strcat(name, "_stats.html");
|
|
}
|
|
mFD = fopen(name, "w");
|
|
if (mFD) {
|
|
fprintf(mFD, "<html><head><title>Reflow Stats</title></head><body>\n");
|
|
const char * title = aStr?aStr:"No name";
|
|
fprintf(mFD, "<center><b>%s</b><br><table border=1 style=\"background-color:#e0e0e0\">", title);
|
|
DoGrandHTMLTotals();
|
|
fprintf(mFD, "</center></table>\n");
|
|
fprintf(mFD, "</body></html>\n");
|
|
fclose(mFD);
|
|
mFD = nullptr;
|
|
}
|
|
#endif // not XP!
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoClearTotals(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
counter->ClearTotals();
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::ClearTotals()
|
|
{
|
|
PL_HashTableEnumerateEntries(mCounts, DoClearTotals, this);
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::ClearGrandTotals()
|
|
{
|
|
if (nullptr != mCounts) {
|
|
ReflowCounter * gTots = (ReflowCounter *)PL_HashTableLookup(mCounts, kGrandTotalsStr);
|
|
if (gTots == nullptr) {
|
|
gTots = new ReflowCounter(this);
|
|
PL_HashTableAdd(mCounts, NS_strdup(kGrandTotalsStr), gTots);
|
|
} else {
|
|
gTots->ClearTotals();
|
|
gTots->SetTotalsCache();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
int ReflowCountMgr::DoDisplayDiffTotals(PLHashEntry *he, int i, void *arg)
|
|
{
|
|
bool cycledOnce = (arg != 0);
|
|
|
|
char *str = (char *)he->key;
|
|
ReflowCounter * counter = (ReflowCounter *)he->value;
|
|
|
|
if (cycledOnce) {
|
|
counter->CalcDiffInTotals();
|
|
counter->DisplayDiffTotals(str);
|
|
}
|
|
counter->SetTotalsCache();
|
|
|
|
return HT_ENUMERATE_NEXT;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DisplayDiffsInTotals(const char * aStr)
|
|
{
|
|
if (mCycledOnce) {
|
|
printf("Differences\n");
|
|
for (int32_t i=0;i<78;i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
ClearGrandTotals();
|
|
}
|
|
PL_HashTableEnumerateEntries(mCounts, DoDisplayDiffTotals, (void *)mCycledOnce);
|
|
|
|
mCycledOnce = true;
|
|
}
|
|
|
|
#endif // MOZ_REFLOW_PERF
|
|
|
|
// make a color string like #RRGGBB
|
|
void ColorToString(nscolor aColor, nsAutoString &aString)
|
|
{
|
|
char buf[8];
|
|
|
|
PR_snprintf(buf, sizeof(buf), "#%02x%02x%02x",
|
|
NS_GET_R(aColor), NS_GET_G(aColor), NS_GET_B(aColor));
|
|
CopyASCIItoUTF16(buf, aString);
|
|
}
|
|
|
|
nsIFrame* nsIPresShell::GetAbsoluteContainingBlock(nsIFrame *aFrame)
|
|
{
|
|
return FrameConstructor()->GetAbsoluteContainingBlock(aFrame,
|
|
nsCSSFrameConstructor::ABS_POS);
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
bool
|
|
nsIPresShell::IsAccessibilityActive()
|
|
{
|
|
return GetAccService() != nullptr;
|
|
}
|
|
|
|
nsAccessibilityService*
|
|
nsIPresShell::AccService()
|
|
{
|
|
return GetAccService();
|
|
}
|
|
#endif
|
|
|
|
void nsIPresShell::InitializeStatics()
|
|
{
|
|
NS_ASSERTION(!gCaptureTouchList, "InitializeStatics called multiple times!");
|
|
gCaptureTouchList = new nsRefPtrHashtable<nsUint32HashKey, dom::Touch>;
|
|
}
|
|
|
|
void nsIPresShell::ReleaseStatics()
|
|
{
|
|
NS_ASSERTION(gCaptureTouchList, "ReleaseStatics called without Initialize!");
|
|
delete gCaptureTouchList;
|
|
gCaptureTouchList = nullptr;
|
|
}
|
|
|
|
// Asks our docshell whether we're active.
|
|
void PresShell::QueryIsActive()
|
|
{
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainer();
|
|
if (mDocument) {
|
|
nsIDocument* displayDoc = mDocument->GetDisplayDocument();
|
|
if (displayDoc) {
|
|
// Ok, we're an external resource document -- we need to use our display
|
|
// document's docshell to determine "IsActive" status, since we lack
|
|
// a container.
|
|
NS_ABORT_IF_FALSE(!container,
|
|
"external resource doc shouldn't have "
|
|
"its own container");
|
|
|
|
nsIPresShell* displayPresShell = displayDoc->GetShell();
|
|
if (displayPresShell) {
|
|
container = displayPresShell->GetPresContext()->GetContainer();
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docshell(do_QueryInterface(container));
|
|
if (docshell) {
|
|
bool isActive;
|
|
nsresult rv = docshell->GetIsActive(&isActive);
|
|
if (NS_SUCCEEDED(rv))
|
|
SetIsActive(isActive);
|
|
}
|
|
}
|
|
|
|
// Helper for propagating mIsActive changes to external resources
|
|
static bool
|
|
SetExternalResourceIsActive(nsIDocument* aDocument, void* aClosure)
|
|
{
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
shell->SetIsActive(*static_cast<bool*>(aClosure));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
SetPluginIsActive(nsIContent* aContent, void* aClosure)
|
|
{
|
|
nsIFrame *frame = aContent->GetPrimaryFrame();
|
|
nsIObjectFrame *objectFrame = do_QueryFrame(frame);
|
|
if (objectFrame) {
|
|
objectFrame->SetIsDocumentActive(*static_cast<bool*>(aClosure));
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
PresShell::SetIsActive(bool aIsActive)
|
|
{
|
|
NS_PRECONDITION(mDocument, "should only be called with a document");
|
|
|
|
mIsActive = aIsActive;
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->PresContext() == presContext) {
|
|
presContext->RefreshDriver()->SetThrottled(!mIsActive);
|
|
}
|
|
|
|
// Propagate state-change to my resource documents' PresShells
|
|
mDocument->EnumerateExternalResources(SetExternalResourceIsActive,
|
|
&aIsActive);
|
|
mDocument->EnumerateFreezableElements(SetPluginIsActive,
|
|
&aIsActive);
|
|
nsresult rv = UpdateImageLockingState();
|
|
#ifdef ACCESSIBILITY
|
|
if (aIsActive) {
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService) {
|
|
accService->PresShellActivated(this);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// We have this odd special case here because remote content behaves
|
|
// differently from same-process content when "hidden". In
|
|
// desktop-type "browser UIs", hidden "tabs" have documents that are
|
|
// part of the chrome tree. When the tabs are hidden, their content
|
|
// is no longer part of the visible document tree, and the layers
|
|
// for the content are naturally released.
|
|
//
|
|
// Remote content is its own top-level tree in its subprocess. When
|
|
// it's "hidden", there's no transaction in which the document
|
|
// thinks it's not visible, so layers can be retained forever. This
|
|
// is problematic when those layers uselessly hold on to precious
|
|
// resources like directly texturable memory.
|
|
//
|
|
// PresShell::SetIsActive() is the first C++ entry point at which we
|
|
// (i) know that our parent process wants our content to be hidden;
|
|
// and (ii) has easy access to the TabChild. So we use this
|
|
// notification to signal the TabChild to drop its layer tree and
|
|
// stop trying to repaint.
|
|
if (TabChild* tab = TabChild::GetFrom(this)) {
|
|
if (aIsActive) {
|
|
tab->MakeVisible();
|
|
if (!mIsZombie) {
|
|
if (nsIFrame* root = mFrameConstructor->GetRootFrame()) {
|
|
FrameLayerBuilder::InvalidateAllLayersForFrame(
|
|
nsLayoutUtils::GetDisplayRootFrame(root));
|
|
root->SchedulePaint();
|
|
}
|
|
}
|
|
} else {
|
|
tab->MakeHidden();
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Determines the current image locking state. Called when one of the
|
|
* dependent factors changes.
|
|
*/
|
|
nsresult
|
|
PresShell::UpdateImageLockingState()
|
|
{
|
|
// We're locked if we're both thawed and active.
|
|
return mDocument->SetImageLockingState(!mFrozen && mIsActive);
|
|
}
|
|
|
|
PresShell*
|
|
PresShell::GetRootPresShell()
|
|
{
|
|
if (mPresContext) {
|
|
nsPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
return static_cast<PresShell*>(rootPresContext->PresShell());
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
PresShell::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
|
|
nsArenaMemoryStats *aArenaObjectsSize,
|
|
size_t *aPresShellSize,
|
|
size_t *aStyleSetsSize,
|
|
size_t *aTextRunsSize,
|
|
size_t *aPresContextSize)
|
|
{
|
|
mFrameArena.AddSizeOfExcludingThis(aMallocSizeOf, aArenaObjectsSize);
|
|
*aPresShellSize += aMallocSizeOf(this);
|
|
*aPresShellSize += aArenaObjectsSize->mOther;
|
|
|
|
*aStyleSetsSize += StyleSet()->SizeOfIncludingThis(aMallocSizeOf);
|
|
|
|
*aTextRunsSize += SizeOfTextRuns(aMallocSizeOf);
|
|
|
|
*aPresContextSize += mPresContext->SizeOfIncludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
size_t
|
|
PresShell::SizeOfTextRuns(MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
return 0;
|
|
}
|
|
|
|
// clear the TEXT_RUN_MEMORY_ACCOUNTED flags
|
|
nsLayoutUtils::SizeOfTextRunsForFrames(rootFrame, nullptr,
|
|
/* clear = */true);
|
|
|
|
// collect the total memory in use for textruns
|
|
return nsLayoutUtils::SizeOfTextRunsForFrames(rootFrame, aMallocSizeOf,
|
|
/* clear = */false);
|
|
}
|
|
|
|
void
|
|
nsIPresShell::MarkFixedFramesForReflow(IntrinsicDirty aIntrinsicDirty)
|
|
{
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
const nsFrameList& childList = rootFrame->GetChildList(nsIFrame::kFixedList);
|
|
for (nsFrameList::Enumerator e(childList); !e.AtEnd(); e.Next()) {
|
|
FrameNeedsReflow(e.get(), aIntrinsicDirty, NS_FRAME_IS_DIRTY);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetScrollPositionClampingScrollPortSize(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
if (!mScrollPositionClampingScrollPortSizeSet ||
|
|
mScrollPositionClampingScrollPortSize.width != aWidth ||
|
|
mScrollPositionClampingScrollPortSize.height != aHeight) {
|
|
mScrollPositionClampingScrollPortSizeSet = true;
|
|
mScrollPositionClampingScrollPortSize.width = aWidth;
|
|
mScrollPositionClampingScrollPortSize.height = aHeight;
|
|
|
|
MarkFixedFramesForReflow(eResize);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetContentDocumentFixedPositionMargins(const nsMargin& aMargins)
|
|
{
|
|
if (mContentDocumentFixedPositionMargins == aMargins) {
|
|
return;
|
|
}
|
|
|
|
mContentDocumentFixedPositionMargins = aMargins;
|
|
|
|
MarkFixedFramesForReflow(eResize);
|
|
}
|
|
|
|
void
|
|
PresShell::SetupFontInflation()
|
|
{
|
|
mFontSizeInflationEmPerLine = nsLayoutUtils::FontSizeInflationEmPerLine();
|
|
mFontSizeInflationMinTwips = nsLayoutUtils::FontSizeInflationMinTwips();
|
|
mFontSizeInflationLineThreshold = nsLayoutUtils::FontSizeInflationLineThreshold();
|
|
mFontSizeInflationForceEnabled = nsLayoutUtils::FontSizeInflationForceEnabled();
|
|
mFontSizeInflationDisabledInMasterProcess = nsLayoutUtils::FontSizeInflationDisabledInMasterProcess();
|
|
|
|
NotifyFontSizeInflationEnabledIsDirty();
|
|
}
|
|
|
|
void
|
|
nsIPresShell::RecomputeFontSizeInflationEnabled()
|
|
{
|
|
mFontSizeInflationEnabledIsDirty = false;
|
|
|
|
MOZ_ASSERT(mPresContext, "our pres context should not be null");
|
|
if ((FontSizeInflationEmPerLine() == 0 &&
|
|
FontSizeInflationMinTwips() == 0) || mPresContext->IsChrome()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
|
|
// Force-enabling font inflation always trumps the heuristics here.
|
|
if (!FontSizeInflationForceEnabled()) {
|
|
if (TabChild* tab = TabChild::GetFrom(this)) {
|
|
// We're in a child process. Cancel inflation if we're not
|
|
// async-pan zoomed.
|
|
if (!tab->IsAsyncPanZoomEnabled()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
} else if (XRE_GetProcessType() == GeckoProcessType_Default) {
|
|
// We're in the master process. Cancel inflation if it's been
|
|
// explicitly disabled.
|
|
if (FontSizeInflationDisabledInMasterProcess()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXXjwir3:
|
|
// See bug 706918, comment 23 for more information on this particular section
|
|
// of the code. We're using "screen size" in place of the size of the content
|
|
// area, because on mobile, these are close or equal. This will work for our
|
|
// purposes (bug 706198), but it will need to be changed in the future to be
|
|
// more correct when we bring the rest of the viewport code into platform.
|
|
// We actually want the size of the content area, in the event that we don't
|
|
// have any metadata about the width and/or height. On mobile, the screen size
|
|
// and the size of the content area are very close, or the same value.
|
|
// In XUL fennec, the content area is the size of the <browser> widget, but
|
|
// in native fennec, the content area is the size of the Gecko LayerView
|
|
// object.
|
|
|
|
// TODO:
|
|
// Once bug 716575 has been resolved, this code should be changed so that it
|
|
// does the right thing on all platforms.
|
|
nsresult rv;
|
|
nsCOMPtr<nsIScreenManager> screenMgr =
|
|
do_GetService("@mozilla.org/gfx/screenmanager;1", &rv);
|
|
if (!NS_SUCCEEDED(rv)) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIScreen> screen;
|
|
screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
|
|
if (screen) {
|
|
int32_t screenLeft, screenTop, screenWidth, screenHeight;
|
|
screen->GetRect(&screenLeft, &screenTop, &screenWidth, &screenHeight);
|
|
|
|
nsViewportInfo vInf =
|
|
nsContentUtils::GetViewportInfo(GetDocument(), ScreenIntSize(screenWidth, screenHeight));
|
|
|
|
if (vInf.GetDefaultZoom() >= CSSToScreenScale(1.0f) || vInf.IsAutoSizeEnabled()) {
|
|
mFontSizeInflationEnabled = false;
|
|
return;
|
|
}
|
|
}
|
|
|
|
mFontSizeInflationEnabled = true;
|
|
}
|
|
|
|
bool
|
|
nsIPresShell::FontSizeInflationEnabled()
|
|
{
|
|
if (mFontSizeInflationEnabledIsDirty) {
|
|
RecomputeFontSizeInflationEnabled();
|
|
}
|
|
|
|
return mFontSizeInflationEnabled;
|
|
}
|
|
|
|
void
|
|
nsIPresShell::SetMaxLineBoxWidth(nscoord aMaxLineBoxWidth)
|
|
{
|
|
NS_ASSERTION(aMaxLineBoxWidth >= 0, "attempting to set max line box width to a negative value");
|
|
|
|
if (mMaxLineBoxWidth != aMaxLineBoxWidth) {
|
|
mMaxLineBoxWidth = aMaxLineBoxWidth;
|
|
mReflowOnZoomPending = true;
|
|
FrameNeedsReflow(GetRootFrame(), eResize, NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
}
|
|
}
|