mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 05:35:31 +00:00
2764 lines
82 KiB
C++
2764 lines
82 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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/* a presentation of a document, part 1 */
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#include "base/basictypes.h"
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#include "nsCOMPtr.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsILinkHandler.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsIDocShell.h"
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#include "nsIContentViewer.h"
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#include "nsPIDOMWindow.h"
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#include "nsStyleSet.h"
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#include "nsIContent.h"
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#include "nsIFrame.h"
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#include "nsIURL.h"
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#include "nsIDocument.h"
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#include "nsIPrintSettings.h"
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#include "nsILanguageAtomService.h"
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#include "nsStyleContext.h"
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#include "mozilla/LookAndFeel.h"
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#include "nsIComponentManager.h"
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#include "nsIURIContentListener.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIServiceManager.h"
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#include "nsIDOMElement.h"
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#include "nsContentPolicyUtils.h"
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#include "nsIDOMWindow.h"
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#include "nsXPIDLString.h"
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#include "nsIWeakReferenceUtils.h"
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#include "nsCSSRendering.h"
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#include "prprf.h"
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#include "nsAutoPtr.h"
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#include "nsEventStateManager.h"
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#include "nsThreadUtils.h"
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#include "nsFrameManager.h"
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#include "nsLayoutUtils.h"
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#include "nsIViewManager.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsCSSRuleProcessor.h"
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#include "nsStyleChangeList.h"
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#include "nsRuleNode.h"
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#include "nsEventDispatcher.h"
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#include "gfxUserFontSet.h"
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#include "gfxPlatform.h"
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#include "nsCSSRules.h"
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#include "nsFontFaceLoader.h"
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#include "nsEventListenerManager.h"
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#include "nsStyleStructInlines.h"
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#include "nsIAppShell.h"
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#include "prenv.h"
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#include "nsIDOMEventTarget.h"
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#include "nsObjectFrame.h"
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#include "nsTransitionManager.h"
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#include "nsAnimationManager.h"
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#include "mozilla/dom/Element.h"
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#include "nsIMessageManager.h"
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#include "FrameLayerBuilder.h"
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#include "nsDOMMediaQueryList.h"
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#include "nsSMILAnimationController.h"
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#include "mozilla/css/ImageLoader.h"
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#include "mozilla/dom/PBrowserChild.h"
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#include "mozilla/dom/TabChild.h"
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#ifdef IBMBIDI
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#include "nsBidiPresUtils.h"
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#endif // IBMBIDI
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#include "nsContentUtils.h"
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#include "nsPIWindowRoot.h"
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#include "mozilla/Preferences.h"
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// Needed for Start/Stop of Image Animation
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#include "imgIContainer.h"
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#include "nsIImageLoadingContent.h"
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//needed for resetting of image service color
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#include "nsLayoutCID.h"
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#include "nsCSSParser.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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uint8_t gNotifySubDocInvalidationData;
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namespace {
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class CharSetChangingRunnable : public nsRunnable
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{
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public:
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CharSetChangingRunnable(nsPresContext* aPresContext,
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const nsCString& aCharSet)
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: mPresContext(aPresContext),
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mCharSet(aCharSet)
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{
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}
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NS_IMETHOD Run()
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{
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mPresContext->DoChangeCharSet(mCharSet);
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return NS_OK;
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}
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private:
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nsRefPtr<nsPresContext> mPresContext;
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nsCString mCharSet;
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};
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} // anonymous namespace
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nscolor
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nsPresContext::MakeColorPref(const nsString& aColor)
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{
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nsCSSParser parser;
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nsCSSValue value;
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if (!parser.ParseColorString(aColor, nullptr, 0, value)) {
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// Any better choices?
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return NS_RGB(0, 0, 0);
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}
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nscolor color;
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return nsRuleNode::ComputeColor(value, this, nullptr, color)
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? color
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: NS_RGB(0, 0, 0);
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}
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bool
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nsPresContext::IsDOMPaintEventPending()
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{
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if (!mInvalidateRequests.mRequests.IsEmpty()) {
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return true;
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}
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if (GetDisplayRootPresContext()->GetRootPresContext()->mRefreshDriver->ViewManagerFlushIsPending()) {
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// Since we're promising that there will be a MozAfterPaint event
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// fired, we record an empty invalidation in case display list
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// invalidation doesn't invalidate anything further.
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NotifyInvalidation(nsRect(0, 0, 0, 0), 0);
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return true;
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}
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return false;
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}
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int
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nsPresContext::PrefChangedCallback(const char* aPrefName, void* instance_data)
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{
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nsPresContext* presContext = (nsPresContext*)instance_data;
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NS_ASSERTION(nullptr != presContext, "bad instance data");
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if (nullptr != presContext) {
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presContext->PreferenceChanged(aPrefName);
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}
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return 0; // PREF_OK
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}
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void
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nsPresContext::PrefChangedUpdateTimerCallback(nsITimer *aTimer, void *aClosure)
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{
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nsPresContext* presContext = (nsPresContext*)aClosure;
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NS_ASSERTION(presContext != nullptr, "bad instance data");
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if (presContext)
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presContext->UpdateAfterPreferencesChanged();
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}
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#ifdef IBMBIDI
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static bool
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IsVisualCharset(const nsCString& aCharset)
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{
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if (aCharset.LowerCaseEqualsLiteral("ibm862") // Hebrew
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|| aCharset.LowerCaseEqualsLiteral("iso-8859-8") ) { // Hebrew
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return true; // visual text type
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}
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else {
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return false; // logical text type
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}
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}
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#endif // IBMBIDI
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#include "nsContentCID.h"
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// NOTE! nsPresContext::operator new() zeroes out all members, so don't
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// bother initializing members to 0.
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nsPresContext::nsPresContext(nsIDocument* aDocument, nsPresContextType aType)
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: mType(aType), mDocument(aDocument), mMinFontSize(0),
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mTextZoom(1.0), mFullZoom(1.0), mLastFontInflationScreenWidth(-1.0),
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mPageSize(-1, -1), mPPScale(1.0f),
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mViewportStyleOverflow(NS_STYLE_OVERFLOW_AUTO, NS_STYLE_OVERFLOW_AUTO),
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mImageAnimationModePref(imgIContainer::kNormalAnimMode),
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mAllInvalidated(false)
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{
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// NOTE! nsPresContext::operator new() zeroes out all members, so don't
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// bother initializing members to 0.
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mDoScaledTwips = true;
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SetBackgroundImageDraw(true); // always draw the background
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SetBackgroundColorDraw(true);
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mBackgroundColor = NS_RGB(0xFF, 0xFF, 0xFF);
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mUseDocumentColors = true;
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mUseDocumentFonts = true;
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// the minimum font-size is unconstrained by default
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mLinkColor = NS_RGB(0x00, 0x00, 0xEE);
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mActiveLinkColor = NS_RGB(0xEE, 0x00, 0x00);
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mVisitedLinkColor = NS_RGB(0x55, 0x1A, 0x8B);
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mUnderlineLinks = true;
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mSendAfterPaintToContent = false;
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mFocusTextColor = mDefaultColor;
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mFocusBackgroundColor = mBackgroundColor;
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mFocusRingWidth = 1;
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mBodyTextColor = mDefaultColor;
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if (aType == eContext_Galley) {
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mMedium = nsGkAtoms::screen;
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} else {
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mMedium = nsGkAtoms::print;
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mPaginated = true;
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}
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if (!IsDynamic()) {
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mImageAnimationMode = imgIContainer::kDontAnimMode;
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mNeverAnimate = true;
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} else {
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mImageAnimationMode = imgIContainer::kNormalAnimMode;
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mNeverAnimate = false;
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}
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NS_ASSERTION(mDocument, "Null document");
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mUserFontSet = nullptr;
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mUserFontSetDirty = true;
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PR_INIT_CLIST(&mDOMMediaQueryLists);
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}
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nsPresContext::~nsPresContext()
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{
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NS_PRECONDITION(!mShell, "Presshell forgot to clear our mShell pointer");
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SetShell(nullptr);
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NS_ABORT_IF_FALSE(PR_CLIST_IS_EMPTY(&mDOMMediaQueryLists),
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"must not have media query lists left");
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// Disconnect the refresh driver *after* the transition manager, which
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// needs it.
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if (mRefreshDriver && mRefreshDriver->PresContext() == this) {
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mRefreshDriver->Disconnect();
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}
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if (mEventManager) {
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// unclear if these are needed, but can't hurt
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mEventManager->NotifyDestroyPresContext(this);
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mEventManager->SetPresContext(nullptr);
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}
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if (mPrefChangedTimer)
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{
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mPrefChangedTimer->Cancel();
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mPrefChangedTimer = nullptr;
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}
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// Unregister preference callbacks
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"font.",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"browser.display.",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"browser.underline_anchors",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"browser.anchor_color",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"browser.active_color",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"browser.visited_color",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"image.animation_mode",
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this);
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#ifdef IBMBIDI
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"bidi.",
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this);
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#endif // IBMBIDI
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"dom.send_after_paint_to_content",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"gfx.font_rendering.",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"layout.css.dpi",
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this);
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Preferences::UnregisterCallback(nsPresContext::PrefChangedCallback,
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"layout.css.devPixelsPerPx",
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this);
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(nsPresContext)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsPresContext)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY(nsIObserver)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsPresContext)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsPresContext)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsPresContext)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mDocument);
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// NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mDeviceContext); // not xpcom
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mEventManager, nsIObserver);
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// NS_IMPL_CYCLE_COLLECTION_TRAVERSE_RAWPTR(mLanguage); // an atom
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// We own only the items in mDOMMediaQueryLists that have listeners;
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// this reference is managed by their AddListener and RemoveListener
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// methods.
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for (PRCList *l = PR_LIST_HEAD(&tmp->mDOMMediaQueryLists);
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l != &tmp->mDOMMediaQueryLists; l = PR_NEXT_LINK(l)) {
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nsDOMMediaQueryList *mql = static_cast<nsDOMMediaQueryList*>(l);
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if (mql->HasListeners()) {
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mDOMMediaQueryLists item");
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cb.NoteXPCOMChild(mql);
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}
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}
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// NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mTheme); // a service
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// NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mLangService); // a service
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mPrintSettings);
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mPrefChangedTimer);
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsPresContext)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mDocument);
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mDeviceContext); // worth bothering?
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if (tmp->mEventManager) {
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// unclear if these are needed, but can't hurt
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tmp->mEventManager->NotifyDestroyPresContext(tmp);
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tmp->mEventManager->SetPresContext(nullptr);
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tmp->mEventManager = nullptr;
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}
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// We own only the items in mDOMMediaQueryLists that have listeners;
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// this reference is managed by their AddListener and RemoveListener
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// methods.
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for (PRCList *l = PR_LIST_HEAD(&tmp->mDOMMediaQueryLists);
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l != &tmp->mDOMMediaQueryLists; ) {
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PRCList *next = PR_NEXT_LINK(l);
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nsDOMMediaQueryList *mql = static_cast<nsDOMMediaQueryList*>(l);
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mql->RemoveAllListeners();
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l = next;
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}
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// NS_RELEASE(tmp->mLanguage); // an atom
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// NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTheme); // a service
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// NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mLangService); // a service
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mPrintSettings);
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if (tmp->mPrefChangedTimer)
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{
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tmp->mPrefChangedTimer->Cancel();
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tmp->mPrefChangedTimer = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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#define MAKE_FONT_PREF_KEY(_pref, _s0, _s1) \
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_pref.Assign(_s0); \
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_pref.Append(_s1);
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static const char* const kGenericFont[] = {
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".variable.",
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".fixed.",
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".serif.",
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".sans-serif.",
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".monospace.",
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".cursive.",
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".fantasy."
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};
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// whether no native theme service exists;
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// if this gets set to true, we'll stop asking for it.
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static bool sNoTheme = false;
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// Set to true when LookAndFeelChanged needs to be called. This is used
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// because the look and feel is a service, so there's no need to notify it from
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// more than one prescontext.
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static bool sLookAndFeelChanged;
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// Set to true when ThemeChanged needs to be called on mTheme. This is used
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// because mTheme is a service, so there's no need to notify it from more than
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// one prescontext.
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static bool sThemeChanged;
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const nsPresContext::LangGroupFontPrefs*
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nsPresContext::GetFontPrefsForLang(nsIAtom *aLanguage) const
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{
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// Get language group for aLanguage:
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nsresult rv;
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nsIAtom *langGroupAtom = nullptr;
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if (!aLanguage) {
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aLanguage = mLanguage;
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}
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if (aLanguage && mLangService) {
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langGroupAtom = mLangService->GetLanguageGroup(aLanguage, &rv);
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}
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if (NS_FAILED(rv) || !langGroupAtom) {
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langGroupAtom = nsGkAtoms::x_western; // Assume x-western is safe...
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}
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// Look for cached prefs for this lang group.
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// Most documents will only use one (or very few) language groups. Rather
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// than have the overhead of a hash lookup, we simply look along what will
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// typically be a very short (usually of length 1) linked list. There are 31
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// language groups, so in the worst case scenario we'll need to traverse 31
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// link items.
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LangGroupFontPrefs *prefs =
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const_cast<LangGroupFontPrefs*>(&mLangGroupFontPrefs);
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if (prefs->mLangGroup) { // if initialized
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DebugOnly<uint32_t> count = 0;
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for (;;) {
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NS_ASSERTION(++count < 35, "Lang group count exceeded!!!");
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if (prefs->mLangGroup == langGroupAtom) {
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return prefs;
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}
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if (!prefs->mNext) {
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break;
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}
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prefs = prefs->mNext;
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}
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// nothing cached, so go on and fetch the prefs for this lang group:
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prefs = prefs->mNext = new LangGroupFontPrefs;
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}
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prefs->mLangGroup = langGroupAtom;
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/* Fetch the font prefs to be used -- see bug 61883 for details.
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Not all prefs are needed upfront. Some are fallback prefs intended
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for the GFX font sub-system...
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1) unit : assumed to be the same for all language groups -------------
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font.size.unit = px | pt XXX could be folded in the size... bug 90440
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2) attributes for generic fonts --------------------------------------
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font.default.[langGroup] = serif | sans-serif - fallback generic font
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font.name.[generic].[langGroup] = current user' selected font on the pref dialog
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font.name-list.[generic].[langGroup] = fontname1, fontname2, ... [factory pre-built list]
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font.size.[generic].[langGroup] = integer - settable by the user
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font.size-adjust.[generic].[langGroup] = "float" - settable by the user
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font.minimum-size.[langGroup] = integer - settable by the user
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*/
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nsAutoCString langGroup;
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langGroupAtom->ToUTF8String(langGroup);
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prefs->mDefaultVariableFont.size = CSSPixelsToAppUnits(16);
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prefs->mDefaultFixedFont.size = CSSPixelsToAppUnits(13);
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nsAutoCString pref;
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// get the current applicable font-size unit
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enum {eUnit_unknown = -1, eUnit_px, eUnit_pt};
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int32_t unit = eUnit_px;
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nsAdoptingCString cvalue =
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Preferences::GetCString("font.size.unit");
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if (!cvalue.IsEmpty()) {
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if (cvalue.Equals("px")) {
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unit = eUnit_px;
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}
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else if (cvalue.Equals("pt")) {
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unit = eUnit_pt;
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}
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else {
|
|
// XXX should really send this warning to the user (Error Console?).
|
|
// And just default to unit = eUnit_px?
|
|
NS_WARNING("unexpected font-size unit -- expected: 'px' or 'pt'");
|
|
unit = eUnit_unknown;
|
|
}
|
|
}
|
|
|
|
// get font.minimum-size.[langGroup]
|
|
|
|
MAKE_FONT_PREF_KEY(pref, "font.minimum-size.", langGroup);
|
|
|
|
int32_t size = Preferences::GetInt(pref.get());
|
|
if (unit == eUnit_px) {
|
|
prefs->mMinimumFontSize = CSSPixelsToAppUnits(size);
|
|
}
|
|
else if (unit == eUnit_pt) {
|
|
prefs->mMinimumFontSize = CSSPointsToAppUnits(size);
|
|
}
|
|
|
|
nsFont* fontTypes[] = {
|
|
&prefs->mDefaultVariableFont,
|
|
&prefs->mDefaultFixedFont,
|
|
&prefs->mDefaultSerifFont,
|
|
&prefs->mDefaultSansSerifFont,
|
|
&prefs->mDefaultMonospaceFont,
|
|
&prefs->mDefaultCursiveFont,
|
|
&prefs->mDefaultFantasyFont
|
|
};
|
|
MOZ_STATIC_ASSERT(NS_ARRAY_LENGTH(fontTypes) == eDefaultFont_COUNT,
|
|
"FontTypes array count is not correct");
|
|
|
|
// Get attributes specific to each generic font. We do not get the user's
|
|
// generic-font-name-to-specific-family-name preferences because its the
|
|
// generic name that should be fed into the cascade. It is up to the GFX
|
|
// code to look up the font prefs to convert generic names to specific
|
|
// family names as necessary.
|
|
nsAutoCString generic_dot_langGroup;
|
|
for (uint32_t eType = 0; eType < ArrayLength(fontTypes); ++eType) {
|
|
generic_dot_langGroup.Assign(kGenericFont[eType]);
|
|
generic_dot_langGroup.Append(langGroup);
|
|
|
|
nsFont* font = fontTypes[eType];
|
|
|
|
// set the default variable font (the other fonts are seen as 'generic' fonts
|
|
// in GFX and will be queried there when hunting for alternative fonts)
|
|
if (eType == eDefaultFont_Variable) {
|
|
MAKE_FONT_PREF_KEY(pref, "font.name.variable.", langGroup);
|
|
|
|
nsAdoptingString value = Preferences::GetString(pref.get());
|
|
if (!value.IsEmpty()) {
|
|
prefs->mDefaultVariableFont.name.Assign(value);
|
|
}
|
|
else {
|
|
MAKE_FONT_PREF_KEY(pref, "font.default.", langGroup);
|
|
value = Preferences::GetString(pref.get());
|
|
if (!value.IsEmpty()) {
|
|
prefs->mDefaultVariableFont.name.Assign(value);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
if (eType == eDefaultFont_Monospace) {
|
|
// This takes care of the confusion whereby people often expect "monospace"
|
|
// to have the same default font-size as "-moz-fixed" (this tentative
|
|
// size may be overwritten with the specific value for "monospace" when
|
|
// "font.size.monospace.[langGroup]" is read -- see below)
|
|
prefs->mDefaultMonospaceFont.size = prefs->mDefaultFixedFont.size;
|
|
}
|
|
else if (eType != eDefaultFont_Fixed) {
|
|
// all the other generic fonts are initialized with the size of the
|
|
// variable font, but their specific size can supersede later -- see below
|
|
font->size = prefs->mDefaultVariableFont.size;
|
|
}
|
|
}
|
|
|
|
// Bug 84398: for spec purists, a different font-size only applies to the
|
|
// .variable. and .fixed. fonts and the other fonts should get |font-size-adjust|.
|
|
// The problem is that only GfxWin has the support for |font-size-adjust|. So for
|
|
// parity, we enable the ability to set a different font-size on all platforms.
|
|
|
|
// get font.size.[generic].[langGroup]
|
|
// size=0 means 'Auto', i.e., generic fonts retain the size of the variable font
|
|
MAKE_FONT_PREF_KEY(pref, "font.size", generic_dot_langGroup);
|
|
size = Preferences::GetInt(pref.get());
|
|
if (size > 0) {
|
|
if (unit == eUnit_px) {
|
|
font->size = CSSPixelsToAppUnits(size);
|
|
}
|
|
else if (unit == eUnit_pt) {
|
|
font->size = CSSPointsToAppUnits(size);
|
|
}
|
|
}
|
|
|
|
// get font.size-adjust.[generic].[langGroup]
|
|
// XXX only applicable on GFX ports that handle |font-size-adjust|
|
|
MAKE_FONT_PREF_KEY(pref, "font.size-adjust", generic_dot_langGroup);
|
|
cvalue = Preferences::GetCString(pref.get());
|
|
if (!cvalue.IsEmpty()) {
|
|
font->sizeAdjust = (float)atof(cvalue.get());
|
|
}
|
|
|
|
#ifdef DEBUG_rbs
|
|
printf("%s Family-list:%s size:%d sizeAdjust:%.2f\n",
|
|
generic_dot_langGroup.get(),
|
|
NS_ConvertUTF16toUTF8(font->name).get(), font->size,
|
|
font->sizeAdjust);
|
|
#endif
|
|
}
|
|
|
|
return prefs;
|
|
}
|
|
|
|
void
|
|
nsPresContext::GetDocumentColorPreferences()
|
|
{
|
|
int32_t useAccessibilityTheme = 0;
|
|
bool usePrefColors = true;
|
|
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryReferent(mContainer));
|
|
if (docShell) {
|
|
int32_t docShellType;
|
|
docShell->GetItemType(&docShellType);
|
|
if (nsIDocShellTreeItem::typeChrome == docShellType) {
|
|
usePrefColors = false;
|
|
}
|
|
else {
|
|
useAccessibilityTheme =
|
|
LookAndFeel::GetInt(LookAndFeel::eIntID_UseAccessibilityTheme, 0);
|
|
usePrefColors = !useAccessibilityTheme;
|
|
}
|
|
|
|
}
|
|
if (usePrefColors) {
|
|
usePrefColors =
|
|
!Preferences::GetBool("browser.display.use_system_colors", false);
|
|
}
|
|
|
|
if (usePrefColors) {
|
|
nsAdoptingString colorStr =
|
|
Preferences::GetString("browser.display.foreground_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mDefaultColor = MakeColorPref(colorStr);
|
|
}
|
|
|
|
colorStr = Preferences::GetString("browser.display.background_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mBackgroundColor = MakeColorPref(colorStr);
|
|
}
|
|
}
|
|
else {
|
|
mDefaultColor =
|
|
LookAndFeel::GetColor(LookAndFeel::eColorID_WindowForeground,
|
|
NS_RGB(0x00, 0x00, 0x00));
|
|
mBackgroundColor =
|
|
LookAndFeel::GetColor(LookAndFeel::eColorID_WindowBackground,
|
|
NS_RGB(0xFF, 0xFF, 0xFF));
|
|
}
|
|
|
|
// Wherever we got the default background color from, ensure it is
|
|
// opaque.
|
|
mBackgroundColor = NS_ComposeColors(NS_RGB(0xFF, 0xFF, 0xFF),
|
|
mBackgroundColor);
|
|
|
|
mUseDocumentColors = !useAccessibilityTheme &&
|
|
Preferences::GetBool("browser.display.use_document_colors",
|
|
mUseDocumentColors);
|
|
}
|
|
|
|
void
|
|
nsPresContext::GetUserPreferences()
|
|
{
|
|
if (!GetPresShell()) {
|
|
// No presshell means nothing to do here. We'll do this when we
|
|
// get a presshell.
|
|
return;
|
|
}
|
|
|
|
mAutoQualityMinFontSizePixelsPref =
|
|
Preferences::GetInt("browser.display.auto_quality_min_font_size");
|
|
|
|
// * document colors
|
|
GetDocumentColorPreferences();
|
|
|
|
mSendAfterPaintToContent =
|
|
Preferences::GetBool("dom.send_after_paint_to_content",
|
|
mSendAfterPaintToContent);
|
|
|
|
// * link colors
|
|
mUnderlineLinks =
|
|
Preferences::GetBool("browser.underline_anchors", mUnderlineLinks);
|
|
|
|
nsAdoptingString colorStr = Preferences::GetString("browser.anchor_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mLinkColor = MakeColorPref(colorStr);
|
|
}
|
|
|
|
colorStr = Preferences::GetString("browser.active_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mActiveLinkColor = MakeColorPref(colorStr);
|
|
}
|
|
|
|
colorStr = Preferences::GetString("browser.visited_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mVisitedLinkColor = MakeColorPref(colorStr);
|
|
}
|
|
|
|
mUseFocusColors =
|
|
Preferences::GetBool("browser.display.use_focus_colors", mUseFocusColors);
|
|
|
|
mFocusTextColor = mDefaultColor;
|
|
mFocusBackgroundColor = mBackgroundColor;
|
|
|
|
colorStr = Preferences::GetString("browser.display.focus_text_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mFocusTextColor = MakeColorPref(colorStr);
|
|
}
|
|
|
|
colorStr = Preferences::GetString("browser.display.focus_background_color");
|
|
|
|
if (!colorStr.IsEmpty()) {
|
|
mFocusBackgroundColor = MakeColorPref(colorStr);
|
|
}
|
|
|
|
mFocusRingWidth =
|
|
Preferences::GetInt("browser.display.focus_ring_width", mFocusRingWidth);
|
|
|
|
mFocusRingOnAnything =
|
|
Preferences::GetBool("browser.display.focus_ring_on_anything",
|
|
mFocusRingOnAnything);
|
|
|
|
mFocusRingStyle =
|
|
Preferences::GetInt("browser.display.focus_ring_style", mFocusRingStyle);
|
|
|
|
mBodyTextColor = mDefaultColor;
|
|
|
|
// * use fonts?
|
|
mUseDocumentFonts =
|
|
Preferences::GetInt("browser.display.use_document_fonts") != 0;
|
|
|
|
// * replace backslashes with Yen signs? (bug 245770)
|
|
mEnableJapaneseTransform =
|
|
Preferences::GetBool("layout.enable_japanese_specific_transform");
|
|
|
|
mPrefScrollbarSide = Preferences::GetInt("layout.scrollbar.side");
|
|
|
|
ResetCachedFontPrefs();
|
|
|
|
// * image animation
|
|
const nsAdoptingCString& animatePref =
|
|
Preferences::GetCString("image.animation_mode");
|
|
if (animatePref.Equals("normal"))
|
|
mImageAnimationModePref = imgIContainer::kNormalAnimMode;
|
|
else if (animatePref.Equals("none"))
|
|
mImageAnimationModePref = imgIContainer::kDontAnimMode;
|
|
else if (animatePref.Equals("once"))
|
|
mImageAnimationModePref = imgIContainer::kLoopOnceAnimMode;
|
|
else // dynamic change to invalid value should act like it does initially
|
|
mImageAnimationModePref = imgIContainer::kNormalAnimMode;
|
|
|
|
uint32_t bidiOptions = GetBidi();
|
|
|
|
int32_t prefInt =
|
|
Preferences::GetInt(IBMBIDI_TEXTDIRECTION_STR,
|
|
GET_BIDI_OPTION_DIRECTION(bidiOptions));
|
|
SET_BIDI_OPTION_DIRECTION(bidiOptions, prefInt);
|
|
mPrefBidiDirection = prefInt;
|
|
|
|
prefInt =
|
|
Preferences::GetInt(IBMBIDI_TEXTTYPE_STR,
|
|
GET_BIDI_OPTION_TEXTTYPE(bidiOptions));
|
|
SET_BIDI_OPTION_TEXTTYPE(bidiOptions, prefInt);
|
|
|
|
prefInt =
|
|
Preferences::GetInt(IBMBIDI_NUMERAL_STR,
|
|
GET_BIDI_OPTION_NUMERAL(bidiOptions));
|
|
SET_BIDI_OPTION_NUMERAL(bidiOptions, prefInt);
|
|
|
|
prefInt =
|
|
Preferences::GetInt(IBMBIDI_SUPPORTMODE_STR,
|
|
GET_BIDI_OPTION_SUPPORT(bidiOptions));
|
|
SET_BIDI_OPTION_SUPPORT(bidiOptions, prefInt);
|
|
|
|
// We don't need to force reflow: either we are initializing a new
|
|
// prescontext or we are being called from UpdateAfterPreferencesChanged()
|
|
// which triggers a reflow anyway.
|
|
SetBidi(bidiOptions, false);
|
|
}
|
|
|
|
void
|
|
nsPresContext::InvalidateThebesLayers()
|
|
{
|
|
if (!mShell)
|
|
return;
|
|
nsIFrame* rootFrame = mShell->FrameManager()->GetRootFrame();
|
|
if (rootFrame) {
|
|
// FrameLayerBuilder caches invalidation-related values that depend on the
|
|
// appunits-per-dev-pixel ratio, so ensure that all ThebesLayer drawing
|
|
// is completely flushed.
|
|
rootFrame->InvalidateFrameSubtree();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::AppUnitsPerDevPixelChanged()
|
|
{
|
|
InvalidateThebesLayers();
|
|
|
|
mDeviceContext->FlushFontCache();
|
|
|
|
// All cached style data must be recomputed.
|
|
if (HasCachedStyleData()) {
|
|
MediaFeatureValuesChanged(true);
|
|
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::PreferenceChanged(const char* aPrefName)
|
|
{
|
|
nsDependentCString prefName(aPrefName);
|
|
if (prefName.EqualsLiteral("layout.css.dpi") ||
|
|
prefName.EqualsLiteral("layout.css.devPixelsPerPx")) {
|
|
int32_t oldAppUnitsPerDevPixel = AppUnitsPerDevPixel();
|
|
if (mDeviceContext->CheckDPIChange() && mShell) {
|
|
// Re-fetch the view manager's window dimensions in case there's a deferred
|
|
// resize which hasn't affected our mVisibleArea yet
|
|
nscoord oldWidthAppUnits, oldHeightAppUnits;
|
|
nsIViewManager* vm = mShell->GetViewManager();
|
|
vm->GetWindowDimensions(&oldWidthAppUnits, &oldHeightAppUnits);
|
|
float oldWidthDevPixels = oldWidthAppUnits/oldAppUnitsPerDevPixel;
|
|
float oldHeightDevPixels = oldHeightAppUnits/oldAppUnitsPerDevPixel;
|
|
|
|
nscoord width = NSToCoordRound(oldWidthDevPixels*AppUnitsPerDevPixel());
|
|
nscoord height = NSToCoordRound(oldHeightDevPixels*AppUnitsPerDevPixel());
|
|
vm->SetWindowDimensions(width, height);
|
|
|
|
AppUnitsPerDevPixelChanged();
|
|
}
|
|
return;
|
|
}
|
|
if (StringBeginsWith(prefName, NS_LITERAL_CSTRING("font."))) {
|
|
// Changes to font family preferences don't change anything in the
|
|
// computed style data, so the style system won't generate a reflow
|
|
// hint for us. We need to do that manually.
|
|
|
|
// FIXME We could probably also handle changes to
|
|
// browser.display.auto_quality_min_font_size here, but that
|
|
// probably also requires clearing the text run cache, so don't
|
|
// bother (yet, anyway).
|
|
mPrefChangePendingNeedsReflow = true;
|
|
}
|
|
if (StringBeginsWith(prefName, NS_LITERAL_CSTRING("bidi."))) {
|
|
// Changes to bidi prefs need to trigger a reflow (see bug 443629)
|
|
mPrefChangePendingNeedsReflow = true;
|
|
|
|
// Changes to bidi.numeral also needs to empty the text run cache.
|
|
// This is handled in gfxTextRunWordCache.cpp.
|
|
}
|
|
if (StringBeginsWith(prefName, NS_LITERAL_CSTRING("gfx.font_rendering."))) {
|
|
// Changes to font_rendering prefs need to trigger a reflow
|
|
mPrefChangePendingNeedsReflow = true;
|
|
}
|
|
// we use a zero-delay timer to coalesce multiple pref updates
|
|
if (!mPrefChangedTimer)
|
|
{
|
|
mPrefChangedTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (!mPrefChangedTimer)
|
|
return;
|
|
mPrefChangedTimer->InitWithFuncCallback(nsPresContext::PrefChangedUpdateTimerCallback, (void*)this, 0, nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::UpdateAfterPreferencesChanged()
|
|
{
|
|
mPrefChangedTimer = nullptr;
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryReferent(mContainer));
|
|
if (docShell) {
|
|
int32_t docShellType;
|
|
docShell->GetItemType(&docShellType);
|
|
if (nsIDocShellTreeItem::typeChrome == docShellType)
|
|
return;
|
|
}
|
|
|
|
// Initialize our state from the user preferences
|
|
GetUserPreferences();
|
|
|
|
// update the presShell: tell it to set the preference style rules up
|
|
if (mShell) {
|
|
mShell->SetPreferenceStyleRules(true);
|
|
}
|
|
|
|
InvalidateThebesLayers();
|
|
mDeviceContext->FlushFontCache();
|
|
|
|
nsChangeHint hint = nsChangeHint(0);
|
|
|
|
if (mPrefChangePendingNeedsReflow) {
|
|
NS_UpdateHint(hint, NS_STYLE_HINT_REFLOW);
|
|
}
|
|
|
|
RebuildAllStyleData(hint);
|
|
}
|
|
|
|
nsresult
|
|
nsPresContext::Init(nsDeviceContext* aDeviceContext)
|
|
{
|
|
NS_ASSERTION(!mInitialized, "attempt to reinit pres context");
|
|
NS_ENSURE_ARG(aDeviceContext);
|
|
|
|
mDeviceContext = aDeviceContext;
|
|
|
|
if (mDeviceContext->SetPixelScale(mFullZoom))
|
|
mDeviceContext->FlushFontCache();
|
|
mCurAppUnitsPerDevPixel = AppUnitsPerDevPixel();
|
|
|
|
mEventManager = new nsEventStateManager();
|
|
|
|
mTransitionManager = new nsTransitionManager(this);
|
|
|
|
mAnimationManager = new nsAnimationManager(this);
|
|
|
|
if (mDocument->GetDisplayDocument()) {
|
|
NS_ASSERTION(mDocument->GetDisplayDocument()->GetShell() &&
|
|
mDocument->GetDisplayDocument()->GetShell()->GetPresContext(),
|
|
"Why are we being initialized?");
|
|
mRefreshDriver = mDocument->GetDisplayDocument()->GetShell()->
|
|
GetPresContext()->RefreshDriver();
|
|
} else {
|
|
nsIDocument* parent = mDocument->GetParentDocument();
|
|
// Unfortunately, sometimes |parent| here has no presshell because
|
|
// printing screws up things. Assert that in other cases it does,
|
|
// but whenever the shell is null just fall back on using our own
|
|
// refresh driver.
|
|
NS_ASSERTION(!parent || mDocument->IsStaticDocument() || parent->GetShell(),
|
|
"How did we end up with a presshell if our parent doesn't "
|
|
"have one?");
|
|
if (parent && parent->GetShell()) {
|
|
NS_ASSERTION(parent->GetShell()->GetPresContext(),
|
|
"How did we get a presshell?");
|
|
|
|
// We don't have our container set yet at this point
|
|
nsCOMPtr<nsISupports> ourContainer = mDocument->GetContainer();
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> ourItem = do_QueryInterface(ourContainer);
|
|
if (ourItem) {
|
|
nsCOMPtr<nsIDocShellTreeItem> parentItem;
|
|
ourItem->GetSameTypeParent(getter_AddRefs(parentItem));
|
|
if (parentItem) {
|
|
mRefreshDriver = parent->GetShell()->GetPresContext()->RefreshDriver();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mRefreshDriver) {
|
|
mRefreshDriver = new nsRefreshDriver(this);
|
|
}
|
|
}
|
|
|
|
mLangService = do_GetService(NS_LANGUAGEATOMSERVICE_CONTRACTID);
|
|
|
|
// Register callbacks so we're notified when the preferences change
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"font.",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"browser.display.",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"browser.underline_anchors",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"browser.anchor_color",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"browser.active_color",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"browser.visited_color",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"image.animation_mode",
|
|
this);
|
|
#ifdef IBMBIDI
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"bidi.",
|
|
this);
|
|
#endif
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"dom.send_after_paint_to_content",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"gfx.font_rendering.",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"layout.css.dpi",
|
|
this);
|
|
Preferences::RegisterCallback(nsPresContext::PrefChangedCallback,
|
|
"layout.css.devPixelsPerPx",
|
|
this);
|
|
|
|
nsresult rv = mEventManager->Init();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mEventManager->SetPresContext(this);
|
|
|
|
#ifdef DEBUG
|
|
mInitialized = true;
|
|
#endif
|
|
|
|
mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THIN] = CSSPixelsToAppUnits(1);
|
|
mBorderWidthTable[NS_STYLE_BORDER_WIDTH_MEDIUM] = CSSPixelsToAppUnits(3);
|
|
mBorderWidthTable[NS_STYLE_BORDER_WIDTH_THICK] = CSSPixelsToAppUnits(5);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Note: We don't hold a reference on the shell; it has a reference to
|
|
// us
|
|
void
|
|
nsPresContext::SetShell(nsIPresShell* aShell)
|
|
{
|
|
if (mUserFontSet) {
|
|
// Clear out user font set if we have one
|
|
mUserFontSet->Destroy();
|
|
NS_RELEASE(mUserFontSet);
|
|
}
|
|
|
|
if (mShell) {
|
|
// Remove ourselves as the charset observer from the shell's doc, because
|
|
// this shell may be going away for good.
|
|
nsIDocument *doc = mShell->GetDocument();
|
|
if (doc) {
|
|
doc->RemoveCharSetObserver(this);
|
|
}
|
|
}
|
|
|
|
mShell = aShell;
|
|
|
|
if (mShell) {
|
|
nsIDocument *doc = mShell->GetDocument();
|
|
NS_ASSERTION(doc, "expect document here");
|
|
if (doc) {
|
|
// Have to update PresContext's mDocument before calling any other methods.
|
|
mDocument = doc;
|
|
}
|
|
// Initialize our state from the user preferences, now that we
|
|
// have a presshell, and hence a document.
|
|
GetUserPreferences();
|
|
|
|
if (doc) {
|
|
nsIURI *docURI = doc->GetDocumentURI();
|
|
|
|
if (IsDynamic() && docURI) {
|
|
bool isChrome = false;
|
|
bool isRes = false;
|
|
docURI->SchemeIs("chrome", &isChrome);
|
|
docURI->SchemeIs("resource", &isRes);
|
|
|
|
if (!isChrome && !isRes)
|
|
mImageAnimationMode = mImageAnimationModePref;
|
|
else
|
|
mImageAnimationMode = imgIContainer::kNormalAnimMode;
|
|
}
|
|
|
|
if (mLangService) {
|
|
doc->AddCharSetObserver(this);
|
|
UpdateCharSet(doc->GetDocumentCharacterSet());
|
|
}
|
|
}
|
|
} else {
|
|
if (mTransitionManager) {
|
|
mTransitionManager->Disconnect();
|
|
mTransitionManager = nullptr;
|
|
}
|
|
if (mAnimationManager) {
|
|
mAnimationManager->Disconnect();
|
|
mAnimationManager = nullptr;
|
|
}
|
|
|
|
if (IsRoot()) {
|
|
// Have to cancel our plugin geometry timer, because the
|
|
// callback for that depends on a non-null presshell.
|
|
static_cast<nsRootPresContext*>(this)->CancelApplyPluginGeometryTimer();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::DoChangeCharSet(const nsCString& aCharSet)
|
|
{
|
|
UpdateCharSet(aCharSet);
|
|
mDeviceContext->FlushFontCache();
|
|
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
|
|
}
|
|
|
|
void
|
|
nsPresContext::UpdateCharSet(const nsCString& aCharSet)
|
|
{
|
|
if (mLangService) {
|
|
mLanguage = mLangService->LookupCharSet(aCharSet.get());
|
|
// this will be a language group (or script) code rather than a true language code
|
|
|
|
// bug 39570: moved from nsLanguageAtomService::LookupCharSet()
|
|
if (mLanguage == nsGkAtoms::Unicode) {
|
|
mLanguage = mLangService->GetLocaleLanguage();
|
|
}
|
|
ResetCachedFontPrefs();
|
|
}
|
|
#ifdef IBMBIDI
|
|
//ahmed
|
|
|
|
switch (GET_BIDI_OPTION_TEXTTYPE(GetBidi())) {
|
|
|
|
case IBMBIDI_TEXTTYPE_LOGICAL:
|
|
SetVisualMode(false);
|
|
break;
|
|
|
|
case IBMBIDI_TEXTTYPE_VISUAL:
|
|
SetVisualMode(true);
|
|
break;
|
|
|
|
case IBMBIDI_TEXTTYPE_CHARSET:
|
|
default:
|
|
SetVisualMode(IsVisualCharset(aCharSet));
|
|
}
|
|
#endif // IBMBIDI
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPresContext::Observe(nsISupports* aSubject,
|
|
const char* aTopic,
|
|
const PRUnichar* aData)
|
|
{
|
|
if (!nsCRT::strcmp(aTopic, "charset")) {
|
|
nsRefPtr<CharSetChangingRunnable> runnable =
|
|
new CharSetChangingRunnable(this, NS_LossyConvertUTF16toASCII(aData));
|
|
return NS_DispatchToCurrentThread(runnable);
|
|
}
|
|
|
|
NS_WARNING("unrecognized topic in nsPresContext::Observe");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsPresContext*
|
|
nsPresContext::GetParentPresContext()
|
|
{
|
|
nsIPresShell* shell = GetPresShell();
|
|
if (shell) {
|
|
nsIFrame* rootFrame = shell->FrameManager()->GetRootFrame();
|
|
if (rootFrame) {
|
|
nsIFrame* f = nsLayoutUtils::GetCrossDocParentFrame(rootFrame);
|
|
if (f)
|
|
return f->PresContext();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
nsPresContext*
|
|
nsPresContext::GetToplevelContentDocumentPresContext()
|
|
{
|
|
if (IsChrome())
|
|
return nullptr;
|
|
nsPresContext* pc = this;
|
|
for (;;) {
|
|
nsPresContext* parent = pc->GetParentPresContext();
|
|
if (!parent || parent->IsChrome())
|
|
return pc;
|
|
pc = parent;
|
|
}
|
|
}
|
|
|
|
// We may want to replace this with something faster, maybe caching the root prescontext
|
|
nsRootPresContext*
|
|
nsPresContext::GetRootPresContext()
|
|
{
|
|
nsPresContext* pc = this;
|
|
for (;;) {
|
|
nsPresContext* parent = pc->GetParentPresContext();
|
|
if (!parent)
|
|
break;
|
|
pc = parent;
|
|
}
|
|
return pc->IsRoot() ? static_cast<nsRootPresContext*>(pc) : nullptr;
|
|
}
|
|
|
|
nsRootPresContext*
|
|
nsPresContext::GetDisplayRootPresContext()
|
|
{
|
|
nsPresContext* pc = this;
|
|
for (;;) {
|
|
nsPresContext* parent = pc->GetParentPresContext();
|
|
if (!parent) {
|
|
// Not sure if this is always strictly the parent, but it works for GetRootPresContext
|
|
// where the current pres context has no frames.
|
|
nsIDocument *doc = pc->Document();
|
|
if (doc) {
|
|
doc = doc->GetParentDocument();
|
|
if (doc) {
|
|
nsIPresShell* shell = doc->GetShell();
|
|
if (shell) {
|
|
parent = shell->GetPresContext();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!parent || parent == pc)
|
|
break;
|
|
pc = parent;
|
|
}
|
|
return pc->IsRoot() ? static_cast<nsRootPresContext*>(pc) : nullptr;
|
|
}
|
|
|
|
void
|
|
nsPresContext::CompatibilityModeChanged()
|
|
{
|
|
if (!mShell)
|
|
return;
|
|
|
|
// enable/disable the QuirkSheet
|
|
mShell->StyleSet()->
|
|
EnableQuirkStyleSheet(CompatibilityMode() == eCompatibility_NavQuirks);
|
|
}
|
|
|
|
// Helper function for setting Anim Mode on image
|
|
static void SetImgAnimModeOnImgReq(imgIRequest* aImgReq, uint16_t aMode)
|
|
{
|
|
if (aImgReq) {
|
|
nsCOMPtr<imgIContainer> imgCon;
|
|
aImgReq->GetImage(getter_AddRefs(imgCon));
|
|
if (imgCon) {
|
|
imgCon->SetAnimationMode(aMode);
|
|
}
|
|
}
|
|
}
|
|
|
|
// IMPORTANT: Assumption is that all images for a Presentation
|
|
// have the same Animation Mode (pavlov said this was OK)
|
|
//
|
|
// Walks content and set the animation mode
|
|
// this is a way to turn on/off image animations
|
|
void nsPresContext::SetImgAnimations(nsIContent *aParent, uint16_t aMode)
|
|
{
|
|
nsCOMPtr<nsIImageLoadingContent> imgContent(do_QueryInterface(aParent));
|
|
if (imgContent) {
|
|
nsCOMPtr<imgIRequest> imgReq;
|
|
imgContent->GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
|
|
getter_AddRefs(imgReq));
|
|
SetImgAnimModeOnImgReq(imgReq, aMode);
|
|
}
|
|
|
|
uint32_t count = aParent->GetChildCount();
|
|
for (uint32_t i = 0; i < count; ++i) {
|
|
SetImgAnimations(aParent->GetChildAt(i), aMode);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetSMILAnimations(nsIDocument *aDoc, uint16_t aNewMode,
|
|
uint16_t aOldMode)
|
|
{
|
|
if (aDoc->HasAnimationController()) {
|
|
nsSMILAnimationController* controller = aDoc->GetAnimationController();
|
|
switch (aNewMode)
|
|
{
|
|
case imgIContainer::kNormalAnimMode:
|
|
case imgIContainer::kLoopOnceAnimMode:
|
|
if (aOldMode == imgIContainer::kDontAnimMode)
|
|
controller->Resume(nsSMILTimeContainer::PAUSE_USERPREF);
|
|
break;
|
|
|
|
case imgIContainer::kDontAnimMode:
|
|
if (aOldMode != imgIContainer::kDontAnimMode)
|
|
controller->Pause(nsSMILTimeContainer::PAUSE_USERPREF);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetImageAnimationModeInternal(uint16_t aMode)
|
|
{
|
|
NS_ASSERTION(aMode == imgIContainer::kNormalAnimMode ||
|
|
aMode == imgIContainer::kDontAnimMode ||
|
|
aMode == imgIContainer::kLoopOnceAnimMode, "Wrong Animation Mode is being set!");
|
|
|
|
// Image animation mode cannot be changed when rendering to a printer.
|
|
if (!IsDynamic())
|
|
return;
|
|
|
|
// Now walk the content tree and set the animation mode
|
|
// on all the images.
|
|
if (mShell != nullptr) {
|
|
nsIDocument *doc = mShell->GetDocument();
|
|
if (doc) {
|
|
doc->StyleImageLoader()->SetAnimationMode(aMode);
|
|
|
|
Element *rootElement = doc->GetRootElement();
|
|
if (rootElement) {
|
|
SetImgAnimations(rootElement, aMode);
|
|
}
|
|
SetSMILAnimations(doc, aMode, mImageAnimationMode);
|
|
}
|
|
}
|
|
|
|
mImageAnimationMode = aMode;
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetImageAnimationModeExternal(uint16_t aMode)
|
|
{
|
|
SetImageAnimationModeInternal(aMode);
|
|
}
|
|
|
|
const nsFont*
|
|
nsPresContext::GetDefaultFont(uint8_t aFontID, nsIAtom *aLanguage) const
|
|
{
|
|
const LangGroupFontPrefs *prefs = GetFontPrefsForLang(aLanguage);
|
|
|
|
const nsFont *font;
|
|
switch (aFontID) {
|
|
// Special (our default variable width font and fixed width font)
|
|
case kPresContext_DefaultVariableFont_ID:
|
|
font = &prefs->mDefaultVariableFont;
|
|
break;
|
|
case kPresContext_DefaultFixedFont_ID:
|
|
font = &prefs->mDefaultFixedFont;
|
|
break;
|
|
// CSS
|
|
case kGenericFont_serif:
|
|
font = &prefs->mDefaultSerifFont;
|
|
break;
|
|
case kGenericFont_sans_serif:
|
|
font = &prefs->mDefaultSansSerifFont;
|
|
break;
|
|
case kGenericFont_monospace:
|
|
font = &prefs->mDefaultMonospaceFont;
|
|
break;
|
|
case kGenericFont_cursive:
|
|
font = &prefs->mDefaultCursiveFont;
|
|
break;
|
|
case kGenericFont_fantasy:
|
|
font = &prefs->mDefaultFantasyFont;
|
|
break;
|
|
default:
|
|
font = nullptr;
|
|
NS_ERROR("invalid arg");
|
|
break;
|
|
}
|
|
return font;
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetFullZoom(float aZoom)
|
|
{
|
|
if (!mShell || mFullZoom == aZoom) {
|
|
return;
|
|
}
|
|
|
|
// Re-fetch the view manager's window dimensions in case there's a deferred
|
|
// resize which hasn't affected our mVisibleArea yet
|
|
nscoord oldWidthAppUnits, oldHeightAppUnits;
|
|
mShell->GetViewManager()->GetWindowDimensions(&oldWidthAppUnits, &oldHeightAppUnits);
|
|
float oldWidthDevPixels = oldWidthAppUnits / float(mCurAppUnitsPerDevPixel);
|
|
float oldHeightDevPixels = oldHeightAppUnits / float(mCurAppUnitsPerDevPixel);
|
|
mDeviceContext->SetPixelScale(aZoom);
|
|
|
|
NS_ASSERTION(!mSupressResizeReflow, "two zooms happening at the same time? impossible!");
|
|
mSupressResizeReflow = true;
|
|
|
|
mFullZoom = aZoom;
|
|
mShell->GetViewManager()->
|
|
SetWindowDimensions(NSToCoordRound(oldWidthDevPixels * AppUnitsPerDevPixel()),
|
|
NSToCoordRound(oldHeightDevPixels * AppUnitsPerDevPixel()));
|
|
|
|
AppUnitsPerDevPixelChanged();
|
|
|
|
mSupressResizeReflow = false;
|
|
|
|
mCurAppUnitsPerDevPixel = AppUnitsPerDevPixel();
|
|
}
|
|
|
|
float
|
|
nsPresContext::ScreenWidthInchesForFontInflation(bool* aChanged)
|
|
{
|
|
if (aChanged) {
|
|
*aChanged = false;
|
|
}
|
|
|
|
nsDeviceContext *dx = DeviceContext();
|
|
nsRect clientRect;
|
|
dx->GetClientRect(clientRect); // FIXME: GetClientRect looks expensive
|
|
float deviceWidthInches =
|
|
float(clientRect.width) / float(dx->AppUnitsPerPhysicalInch());
|
|
|
|
if (mLastFontInflationScreenWidth == -1.0) {
|
|
mLastFontInflationScreenWidth = deviceWidthInches;
|
|
}
|
|
|
|
if (deviceWidthInches != mLastFontInflationScreenWidth && aChanged) {
|
|
*aChanged = true;
|
|
mLastFontInflationScreenWidth = deviceWidthInches;
|
|
}
|
|
|
|
return deviceWidthInches;
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetContainer(nsISupports* aHandler)
|
|
{
|
|
mContainer = do_GetWeakReference(aHandler);
|
|
InvalidateIsChromeCache();
|
|
if (mContainer) {
|
|
GetDocumentColorPreferences();
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsISupports>
|
|
nsPresContext::GetContainerInternal() const
|
|
{
|
|
nsISupports *result = nullptr;
|
|
if (mContainer)
|
|
CallQueryReferent(mContainer.get(), &result);
|
|
|
|
return result;
|
|
}
|
|
|
|
already_AddRefed<nsISupports>
|
|
nsPresContext::GetContainerExternal() const
|
|
{
|
|
return GetContainerInternal();
|
|
}
|
|
|
|
#ifdef IBMBIDI
|
|
bool
|
|
nsPresContext::BidiEnabledExternal() const
|
|
{
|
|
return BidiEnabledInternal();
|
|
}
|
|
|
|
bool
|
|
nsPresContext::BidiEnabledInternal() const
|
|
{
|
|
return Document()->GetBidiEnabled();
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetBidiEnabled() const
|
|
{
|
|
if (mShell) {
|
|
nsIDocument *doc = mShell->GetDocument();
|
|
if (doc) {
|
|
doc->SetBidiEnabled();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetBidi(uint32_t aSource, bool aForceRestyle)
|
|
{
|
|
// Don't do all this stuff unless the options have changed.
|
|
if (aSource == GetBidi()) {
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(!(aForceRestyle && (GetBidi() == 0)),
|
|
"ForceReflow on new prescontext");
|
|
|
|
Document()->SetBidiOptions(aSource);
|
|
if (IBMBIDI_TEXTDIRECTION_RTL == GET_BIDI_OPTION_DIRECTION(aSource)
|
|
|| IBMBIDI_NUMERAL_HINDI == GET_BIDI_OPTION_NUMERAL(aSource)) {
|
|
SetBidiEnabled();
|
|
}
|
|
if (IBMBIDI_TEXTTYPE_VISUAL == GET_BIDI_OPTION_TEXTTYPE(aSource)) {
|
|
SetVisualMode(true);
|
|
}
|
|
else if (IBMBIDI_TEXTTYPE_LOGICAL == GET_BIDI_OPTION_TEXTTYPE(aSource)) {
|
|
SetVisualMode(false);
|
|
}
|
|
else {
|
|
nsIDocument* doc = mShell->GetDocument();
|
|
if (doc) {
|
|
SetVisualMode(IsVisualCharset(doc->GetDocumentCharacterSet()));
|
|
}
|
|
}
|
|
if (aForceRestyle && mShell) {
|
|
// Reconstruct the root document element's frame and its children,
|
|
// because we need to trigger frame reconstruction for direction change.
|
|
RebuildUserFontSet();
|
|
mShell->ReconstructFrames();
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
nsPresContext::GetBidi() const
|
|
{
|
|
return Document()->GetBidiOptions();
|
|
}
|
|
|
|
#endif //IBMBIDI
|
|
|
|
bool
|
|
nsPresContext::IsTopLevelWindowInactive()
|
|
{
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem(do_QueryReferent(mContainer));
|
|
if (!treeItem)
|
|
return false;
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> rootItem;
|
|
treeItem->GetRootTreeItem(getter_AddRefs(rootItem));
|
|
nsCOMPtr<nsPIDOMWindow> domWindow(do_GetInterface(rootItem));
|
|
|
|
return domWindow && !domWindow->IsActive();
|
|
}
|
|
|
|
nsITheme*
|
|
nsPresContext::GetTheme()
|
|
{
|
|
if (!sNoTheme && !mTheme) {
|
|
mTheme = do_GetService("@mozilla.org/chrome/chrome-native-theme;1");
|
|
if (!mTheme)
|
|
sNoTheme = true;
|
|
}
|
|
|
|
return mTheme;
|
|
}
|
|
|
|
void
|
|
nsPresContext::ThemeChanged()
|
|
{
|
|
if (!mPendingThemeChanged) {
|
|
sLookAndFeelChanged = true;
|
|
sThemeChanged = true;
|
|
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this, &nsPresContext::ThemeChangedInternal);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mPendingThemeChanged = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::ThemeChangedInternal()
|
|
{
|
|
mPendingThemeChanged = false;
|
|
|
|
// Tell the theme that it changed, so it can flush any handles to stale theme
|
|
// data.
|
|
if (mTheme && sThemeChanged) {
|
|
mTheme->ThemeChanged();
|
|
sThemeChanged = false;
|
|
}
|
|
|
|
// Clear all cached LookAndFeel colors.
|
|
if (sLookAndFeelChanged) {
|
|
LookAndFeel::Refresh();
|
|
sLookAndFeelChanged = false;
|
|
}
|
|
|
|
// This will force the system metrics to be generated the next time they're used
|
|
nsCSSRuleProcessor::FreeSystemMetrics();
|
|
|
|
// Changes to system metrics can change media queries on them.
|
|
MediaFeatureValuesChanged(true);
|
|
|
|
// Changes in theme can change system colors (whose changes are
|
|
// properly reflected in computed style data), system fonts (whose
|
|
// changes are not), and -moz-appearance (whose changes likewise are
|
|
// not), so we need to reflow.
|
|
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
|
|
}
|
|
|
|
void
|
|
nsPresContext::SysColorChanged()
|
|
{
|
|
if (!mPendingSysColorChanged) {
|
|
sLookAndFeelChanged = true;
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this, &nsPresContext::SysColorChangedInternal);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mPendingSysColorChanged = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::SysColorChangedInternal()
|
|
{
|
|
mPendingSysColorChanged = false;
|
|
|
|
if (sLookAndFeelChanged) {
|
|
// Don't use the cached values for the system colors
|
|
LookAndFeel::Refresh();
|
|
sLookAndFeelChanged = false;
|
|
}
|
|
|
|
// Reset default background and foreground colors for the document since
|
|
// they may be using system colors
|
|
GetDocumentColorPreferences();
|
|
|
|
// The system color values are computed to colors in the style data,
|
|
// so normal style data comparison is sufficient here.
|
|
RebuildAllStyleData(nsChangeHint(0));
|
|
}
|
|
|
|
void
|
|
nsPresContext::UIResolutionChanged()
|
|
{
|
|
if (!mPendingUIResolutionChanged) {
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this, &nsPresContext::UIResolutionChangedInternal);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mPendingUIResolutionChanged = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*static*/ bool
|
|
nsPresContext::UIResolutionChangedSubdocumentCallback(nsIDocument* aDocument,
|
|
void* aData)
|
|
{
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
nsPresContext* pc = shell->GetPresContext();
|
|
if (pc) {
|
|
pc->UIResolutionChangedInternal();
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsPresContext::UIResolutionChangedInternal()
|
|
{
|
|
mPendingUIResolutionChanged = false;
|
|
|
|
if (mDeviceContext->CheckDPIChange()) {
|
|
AppUnitsPerDevPixelChanged();
|
|
}
|
|
|
|
mDocument->EnumerateSubDocuments(UIResolutionChangedSubdocumentCallback,
|
|
nullptr);
|
|
}
|
|
|
|
void
|
|
nsPresContext::RebuildAllStyleData(nsChangeHint aExtraHint)
|
|
{
|
|
if (!mShell) {
|
|
// We must have been torn down. Nothing to do here.
|
|
return;
|
|
}
|
|
|
|
RebuildUserFontSet();
|
|
AnimationManager()->KeyframesListIsDirty();
|
|
|
|
mShell->FrameConstructor()->RebuildAllStyleData(aExtraHint);
|
|
}
|
|
|
|
void
|
|
nsPresContext::PostRebuildAllStyleDataEvent(nsChangeHint aExtraHint)
|
|
{
|
|
if (!mShell) {
|
|
// We must have been torn down. Nothing to do here.
|
|
return;
|
|
}
|
|
mShell->FrameConstructor()->PostRebuildAllStyleDataEvent(aExtraHint);
|
|
}
|
|
|
|
void
|
|
nsPresContext::MediaFeatureValuesChanged(bool aCallerWillRebuildStyleData)
|
|
{
|
|
mPendingMediaFeatureValuesChanged = false;
|
|
if (mShell &&
|
|
mShell->StyleSet()->MediumFeaturesChanged(this) &&
|
|
!aCallerWillRebuildStyleData) {
|
|
RebuildAllStyleData(nsChangeHint(0));
|
|
}
|
|
|
|
if (!nsContentUtils::IsSafeToRunScript()) {
|
|
NS_ABORT_IF_FALSE(mDocument->IsBeingUsedAsImage(),
|
|
"How did we get here? Are we failing to notify "
|
|
"listeners that we should notify?");
|
|
return;
|
|
}
|
|
|
|
// Media query list listeners should be notified from a queued task
|
|
// (in HTML5 terms), although we also want to notify them on certain
|
|
// flushes. (We're already running off an event.)
|
|
//
|
|
// Note that we do this after the new style from media queries in
|
|
// style sheets has been computed.
|
|
|
|
if (!PR_CLIST_IS_EMPTY(&mDOMMediaQueryLists)) {
|
|
// We build a list of all the notifications we're going to send
|
|
// before we send any of them. (The spec says the notifications
|
|
// should be a queued task, so any removals that happen during the
|
|
// notifications shouldn't affect what gets notified.) Furthermore,
|
|
// we hold strong pointers to everything we're going to make
|
|
// notification calls to, since each notification involves calling
|
|
// arbitrary script that might otherwise destroy these objects, or,
|
|
// for that matter, |this|.
|
|
//
|
|
// Note that we intentionally send the notifications to media query
|
|
// list in the order they were created and, for each list, to the
|
|
// listeners in the order added.
|
|
nsDOMMediaQueryList::NotifyList notifyList;
|
|
for (PRCList *l = PR_LIST_HEAD(&mDOMMediaQueryLists);
|
|
l != &mDOMMediaQueryLists; l = PR_NEXT_LINK(l)) {
|
|
nsDOMMediaQueryList *mql = static_cast<nsDOMMediaQueryList*>(l);
|
|
mql->MediumFeaturesChanged(notifyList);
|
|
}
|
|
|
|
if (!notifyList.IsEmpty()) {
|
|
nsPIDOMWindow *win = mDocument->GetInnerWindow();
|
|
nsCOMPtr<nsIDOMEventTarget> et = do_QueryInterface(win);
|
|
nsCxPusher pusher;
|
|
|
|
for (uint32_t i = 0, i_end = notifyList.Length(); i != i_end; ++i) {
|
|
if (pusher.RePush(et)) {
|
|
nsAutoMicroTask mt;
|
|
nsDOMMediaQueryList::HandleChangeData &d = notifyList[i];
|
|
d.listener->HandleChange(d.mql);
|
|
}
|
|
}
|
|
}
|
|
|
|
// NOTE: When |notifyList| goes out of scope, our destructor could run.
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::PostMediaFeatureValuesChangedEvent()
|
|
{
|
|
// FIXME: We should probably replace this event with use of
|
|
// nsRefreshDriver::AddStyleFlushObserver (except the pres shell would
|
|
// need to track whether it's been added).
|
|
if (!mPendingMediaFeatureValuesChanged) {
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this, &nsPresContext::HandleMediaFeatureValuesChangedEvent);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mPendingMediaFeatureValuesChanged = true;
|
|
mDocument->SetNeedStyleFlush();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::HandleMediaFeatureValuesChangedEvent()
|
|
{
|
|
// Null-check mShell in case the shell has been destroyed (and the
|
|
// event is the only thing holding the pres context alive).
|
|
if (mPendingMediaFeatureValuesChanged && mShell) {
|
|
MediaFeatureValuesChanged(false);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::MatchMedia(const nsAString& aMediaQueryList,
|
|
nsIDOMMediaQueryList** aResult)
|
|
{
|
|
nsRefPtr<nsDOMMediaQueryList> result =
|
|
new nsDOMMediaQueryList(this, aMediaQueryList);
|
|
|
|
// Insert the new item at the end of the linked list.
|
|
PR_INSERT_BEFORE(result, &mDOMMediaQueryLists);
|
|
|
|
result.forget(aResult);
|
|
}
|
|
|
|
nsCompatibility
|
|
nsPresContext::CompatibilityMode() const
|
|
{
|
|
return Document()->GetCompatibilityMode();
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetPaginatedScrolling(bool aPaginated)
|
|
{
|
|
if (mType == eContext_PrintPreview || mType == eContext_PageLayout)
|
|
mCanPaginatedScroll = aPaginated;
|
|
}
|
|
|
|
void
|
|
nsPresContext::SetPrintSettings(nsIPrintSettings *aPrintSettings)
|
|
{
|
|
if (mMedium == nsGkAtoms::print)
|
|
mPrintSettings = aPrintSettings;
|
|
}
|
|
|
|
bool
|
|
nsPresContext::EnsureVisible()
|
|
{
|
|
nsCOMPtr<nsIDocShell> docShell(do_QueryReferent(mContainer));
|
|
if (docShell) {
|
|
nsCOMPtr<nsIContentViewer> cv;
|
|
docShell->GetContentViewer(getter_AddRefs(cv));
|
|
// Make sure this is the content viewer we belong with
|
|
if (cv) {
|
|
nsRefPtr<nsPresContext> currentPresContext;
|
|
cv->GetPresContext(getter_AddRefs(currentPresContext));
|
|
if (currentPresContext == this) {
|
|
// OK, this is us. We want to call Show() on the content viewer.
|
|
nsresult result = cv->Show();
|
|
if (NS_SUCCEEDED(result)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
void
|
|
nsPresContext::CountReflows(const char * aName, nsIFrame * aFrame)
|
|
{
|
|
if (mShell) {
|
|
mShell->CountReflows(aName, aFrame);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
nsPresContext::IsChromeSlow() const
|
|
{
|
|
bool isChrome = false;
|
|
nsCOMPtr<nsISupports> container = GetContainer();
|
|
if (container) {
|
|
nsresult result;
|
|
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(container, &result));
|
|
if (NS_SUCCEEDED(result) && docShell) {
|
|
int32_t docShellType;
|
|
result = docShell->GetItemType(&docShellType);
|
|
if (NS_SUCCEEDED(result)) {
|
|
isChrome = nsIDocShellTreeItem::typeChrome == docShellType;
|
|
}
|
|
}
|
|
}
|
|
mIsChrome = isChrome;
|
|
mIsChromeIsCached = true;
|
|
return mIsChrome;
|
|
}
|
|
|
|
void
|
|
nsPresContext::InvalidateIsChromeCacheExternal()
|
|
{
|
|
InvalidateIsChromeCacheInternal();
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsPresContext::HasAuthorSpecifiedRules(nsIFrame *aFrame, uint32_t ruleTypeMask) const
|
|
{
|
|
return
|
|
nsRuleNode::HasAuthorSpecifiedRules(aFrame->GetStyleContext(),
|
|
ruleTypeMask,
|
|
UseDocumentColors());
|
|
}
|
|
|
|
gfxUserFontSet*
|
|
nsPresContext::GetUserFontSetInternal()
|
|
{
|
|
// We want to initialize the user font set lazily the first time the
|
|
// user asks for it, rather than building it too early and forcing
|
|
// rule cascade creation. Thus we try to enforce the invariant that
|
|
// we *never* build the user font set until the first call to
|
|
// GetUserFontSet. However, once it's been requested, we can't wait
|
|
// for somebody to call GetUserFontSet in order to rebuild it (see
|
|
// comments below in RebuildUserFontSet for why).
|
|
#ifdef DEBUG
|
|
bool userFontSetGottenBefore = mGetUserFontSetCalled;
|
|
#endif
|
|
// Set mGetUserFontSetCalled up front, so that FlushUserFontSet will actually
|
|
// flush.
|
|
mGetUserFontSetCalled = true;
|
|
if (mUserFontSetDirty) {
|
|
// If this assertion fails, and there have actually been changes to
|
|
// @font-face rules, then we will call StyleChangeReflow in
|
|
// FlushUserFontSet. If we're in the middle of reflow,
|
|
// that's a bad thing to do, and the caller was responsible for
|
|
// flushing first. If we're not (e.g., in frame construction), it's
|
|
// ok.
|
|
NS_ASSERTION(!userFontSetGottenBefore || !mShell->IsReflowLocked(),
|
|
"FlushUserFontSet should have been called first");
|
|
FlushUserFontSet();
|
|
}
|
|
|
|
return mUserFontSet;
|
|
}
|
|
|
|
gfxUserFontSet*
|
|
nsPresContext::GetUserFontSetExternal()
|
|
{
|
|
return GetUserFontSetInternal();
|
|
}
|
|
|
|
void
|
|
nsPresContext::FlushUserFontSet()
|
|
{
|
|
if (!mShell) {
|
|
return; // we've been torn down
|
|
}
|
|
|
|
if (!mGetUserFontSetCalled) {
|
|
return; // No one cares about this font set yet, but we want to be careful
|
|
// to not unset our mUserFontSetDirty bit, so when someone really
|
|
// does we'll create it.
|
|
}
|
|
|
|
if (mUserFontSetDirty) {
|
|
if (gfxPlatform::GetPlatform()->DownloadableFontsEnabled()) {
|
|
nsTArray<nsFontFaceRuleContainer> rules;
|
|
if (!mShell->StyleSet()->AppendFontFaceRules(this, rules)) {
|
|
if (mUserFontSet) {
|
|
mUserFontSet->Destroy();
|
|
NS_RELEASE(mUserFontSet);
|
|
}
|
|
return;
|
|
}
|
|
|
|
bool changed = false;
|
|
|
|
if (rules.Length() == 0) {
|
|
if (mUserFontSet) {
|
|
mUserFontSet->Destroy();
|
|
NS_RELEASE(mUserFontSet);
|
|
changed = true;
|
|
}
|
|
} else {
|
|
if (!mUserFontSet) {
|
|
mUserFontSet = new nsUserFontSet(this);
|
|
NS_ADDREF(mUserFontSet);
|
|
}
|
|
changed = mUserFontSet->UpdateRules(rules);
|
|
}
|
|
|
|
// We need to enqueue a style change reflow (for later) to
|
|
// reflect that we're modifying @font-face rules. (However,
|
|
// without a reflow, nothing will happen to start any downloads
|
|
// that are needed.)
|
|
if (changed) {
|
|
UserFontSetUpdated();
|
|
}
|
|
}
|
|
|
|
mUserFontSetDirty = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::RebuildUserFontSet()
|
|
{
|
|
if (!mGetUserFontSetCalled) {
|
|
// We want to lazily build the user font set the first time it's
|
|
// requested (so we don't force creation of rule cascades too
|
|
// early), so don't do anything now.
|
|
return;
|
|
}
|
|
|
|
mUserFontSetDirty = true;
|
|
mDocument->SetNeedStyleFlush();
|
|
|
|
// Somebody has already asked for the user font set, so we need to
|
|
// post an event to rebuild it. Setting the user font set to be dirty
|
|
// and lazily rebuilding it isn't sufficient, since it is only the act
|
|
// of rebuilding it that will trigger the style change reflow that
|
|
// calls GetUserFontSet. (This reflow causes rebuilding of text runs,
|
|
// which starts font loads, whose completion causes another style
|
|
// change reflow).
|
|
if (!mPostedFlushUserFontSet) {
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this, &nsPresContext::HandleRebuildUserFontSet);
|
|
if (NS_SUCCEEDED(NS_DispatchToCurrentThread(ev))) {
|
|
mPostedFlushUserFontSet = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::UserFontSetUpdated()
|
|
{
|
|
if (!mShell)
|
|
return;
|
|
|
|
// Changes to the set of available fonts can cause updates to layout by:
|
|
//
|
|
// 1. Changing the font used for text, which changes anything that
|
|
// depends on text measurement, including line breaking and
|
|
// intrinsic widths, and any other parts of layout that depend on
|
|
// font metrics. This requires a style change reflow to update.
|
|
//
|
|
// 2. Changing the value of the 'ex' and 'ch' units in style data,
|
|
// which also depend on font metrics. Updating this information
|
|
// requires rebuilding the rule tree from the top, avoiding the
|
|
// reuse of cached data even when no style rules have changed.
|
|
|
|
PostRebuildAllStyleDataEvent(NS_STYLE_HINT_REFLOW);
|
|
}
|
|
|
|
bool
|
|
nsPresContext::EnsureSafeToHandOutCSSRules()
|
|
{
|
|
nsCSSStyleSheet::EnsureUniqueInnerResult res =
|
|
mShell->StyleSet()->EnsureUniqueInnerOnCSSSheets();
|
|
if (res == nsCSSStyleSheet::eUniqueInner_AlreadyUnique) {
|
|
// Nothing to do.
|
|
return true;
|
|
}
|
|
if (res == nsCSSStyleSheet::eUniqueInner_CloneFailed) {
|
|
return false;
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(res == nsCSSStyleSheet::eUniqueInner_ClonedInner,
|
|
"unexpected result");
|
|
RebuildAllStyleData(nsChangeHint(0));
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsPresContext::FireDOMPaintEvent()
|
|
{
|
|
nsPIDOMWindow* ourWindow = mDocument->GetWindow();
|
|
if (!ourWindow)
|
|
return;
|
|
|
|
nsCOMPtr<nsIDOMEventTarget> dispatchTarget = do_QueryInterface(ourWindow);
|
|
nsCOMPtr<nsIDOMEventTarget> eventTarget = dispatchTarget;
|
|
if (!IsChrome() && !mSendAfterPaintToContent) {
|
|
// Don't tell the window about this event, it should not know that
|
|
// something happened in a subdocument. Tell only the chrome event handler.
|
|
// (Events sent to the window get propagated to the chrome event handler
|
|
// automatically.)
|
|
dispatchTarget = do_QueryInterface(ourWindow->GetParentTarget());
|
|
if (!dispatchTarget) {
|
|
return;
|
|
}
|
|
}
|
|
// Events sent to the window get propagated to the chrome event handler
|
|
// automatically.
|
|
nsCOMPtr<nsIDOMEvent> event;
|
|
// This will empty our list in case dispatching the event causes more damage
|
|
// (hopefully it won't, or we're likely to get an infinite loop! At least
|
|
// it won't be blocking app execution though).
|
|
NS_NewDOMNotifyPaintEvent(getter_AddRefs(event), this, nullptr,
|
|
NS_AFTERPAINT,
|
|
&mInvalidateRequests);
|
|
mAllInvalidated = false;
|
|
if (!event) {
|
|
return;
|
|
}
|
|
|
|
// Even if we're not telling the window about the event (so eventTarget is
|
|
// the chrome event handler, not the window), the window is still
|
|
// logically the event target.
|
|
event->SetTarget(eventTarget);
|
|
event->SetTrusted(true);
|
|
nsEventDispatcher::DispatchDOMEvent(dispatchTarget, nullptr, event, this, nullptr);
|
|
}
|
|
|
|
static bool
|
|
MayHavePaintEventListenerSubdocumentCallback(nsIDocument* aDocument, void* aData)
|
|
{
|
|
bool *result = static_cast<bool*>(aData);
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
nsPresContext* pc = shell->GetPresContext();
|
|
if (pc) {
|
|
*result = pc->MayHavePaintEventListenerInSubDocument();
|
|
|
|
// If we found a paint event listener, then we can stop enumerating
|
|
// sub documents.
|
|
return !*result;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
MayHavePaintEventListener(nsPIDOMWindow* aInnerWindow)
|
|
{
|
|
if (!aInnerWindow)
|
|
return false;
|
|
if (aInnerWindow->HasPaintEventListeners())
|
|
return true;
|
|
|
|
nsIDOMEventTarget* parentTarget = aInnerWindow->GetParentTarget();
|
|
if (!parentTarget)
|
|
return false;
|
|
|
|
nsEventListenerManager* manager = nullptr;
|
|
if ((manager = parentTarget->GetListenerManager(false)) &&
|
|
manager->MayHavePaintEventListener()) {
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> node;
|
|
if (parentTarget != aInnerWindow->GetChromeEventHandler()) {
|
|
nsCOMPtr<nsIInProcessContentFrameMessageManager> mm =
|
|
do_QueryInterface(parentTarget);
|
|
if (mm) {
|
|
node = mm->GetOwnerContent();
|
|
}
|
|
}
|
|
|
|
if (!node) {
|
|
node = do_QueryInterface(parentTarget);
|
|
}
|
|
if (node)
|
|
return MayHavePaintEventListener(node->OwnerDoc()->GetInnerWindow());
|
|
|
|
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(parentTarget);
|
|
if (window)
|
|
return MayHavePaintEventListener(window);
|
|
|
|
nsCOMPtr<nsPIWindowRoot> root = do_QueryInterface(parentTarget);
|
|
nsIDOMEventTarget* tabChildGlobal;
|
|
return root &&
|
|
(tabChildGlobal = root->GetParentTarget()) &&
|
|
(manager = tabChildGlobal->GetListenerManager(false)) &&
|
|
manager->MayHavePaintEventListener();
|
|
}
|
|
|
|
bool
|
|
nsPresContext::MayHavePaintEventListener()
|
|
{
|
|
return ::MayHavePaintEventListener(mDocument->GetInnerWindow());
|
|
}
|
|
|
|
bool
|
|
nsPresContext::MayHavePaintEventListenerInSubDocument()
|
|
{
|
|
if (MayHavePaintEventListener()) {
|
|
return true;
|
|
}
|
|
|
|
bool result = false;
|
|
mDocument->EnumerateSubDocuments(MayHavePaintEventListenerSubdocumentCallback, &result);
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsPresContext::NotifyInvalidation(uint32_t aFlags)
|
|
{
|
|
nsIFrame* rootFrame = PresShell()->FrameManager()->GetRootFrame();
|
|
NotifyInvalidation(rootFrame->GetVisualOverflowRect(), aFlags);
|
|
mAllInvalidated = true;
|
|
}
|
|
|
|
void
|
|
nsPresContext::NotifyInvalidation(const nsIntRect& aRect, uint32_t aFlags)
|
|
{
|
|
nsRect rect(DevPixelsToAppUnits(aRect.x),
|
|
DevPixelsToAppUnits(aRect.y),
|
|
DevPixelsToAppUnits(aRect.width),
|
|
DevPixelsToAppUnits(aRect.height));
|
|
NotifyInvalidation(rect, aFlags);
|
|
}
|
|
|
|
void
|
|
nsPresContext::NotifyInvalidation(const nsRect& aRect, uint32_t aFlags)
|
|
{
|
|
// If there is no paint event listener, then we don't need to fire
|
|
// the asynchronous event. We don't even need to record invalidation.
|
|
// MayHavePaintEventListener is pretty cheap and we could make it
|
|
// even cheaper by providing a more efficient
|
|
// nsPIDOMWindow::GetListenerManager.
|
|
|
|
if (mAllInvalidated) {
|
|
return;
|
|
}
|
|
|
|
nsPresContext* pc;
|
|
for (pc = this; pc; pc = pc->GetParentPresContext()) {
|
|
if (pc->mFireAfterPaintEvents)
|
|
break;
|
|
pc->mFireAfterPaintEvents = true;
|
|
}
|
|
if (!pc) {
|
|
nsRootPresContext* rpc = GetRootPresContext();
|
|
if (rpc) {
|
|
rpc->EnsureEventualDidPaintEvent();
|
|
}
|
|
}
|
|
|
|
nsInvalidateRequestList::Request* request =
|
|
mInvalidateRequests.mRequests.AppendElement();
|
|
if (!request)
|
|
return;
|
|
|
|
request->mRect = aRect;
|
|
request->mFlags = aFlags;
|
|
}
|
|
|
|
/* static */ void
|
|
nsPresContext::NotifySubDocInvalidation(ContainerLayer* aContainer,
|
|
const nsIntRegion& aRegion)
|
|
{
|
|
ContainerLayerPresContext *data =
|
|
static_cast<ContainerLayerPresContext*>(
|
|
aContainer->GetUserData(&gNotifySubDocInvalidationData));
|
|
if (!data) {
|
|
return;
|
|
}
|
|
|
|
nsIntPoint topLeft = aContainer->GetVisibleRegion().GetBounds().TopLeft();
|
|
|
|
nsIntRegionRectIterator iter(aRegion);
|
|
while (const nsIntRect* r = iter.Next()) {
|
|
nsIntRect rect = *r;
|
|
//PresContext coordinate space is relative to the start of our visible
|
|
// region. Is this really true? This feels like the wrong way to get the right
|
|
// answer.
|
|
rect.MoveBy(-topLeft);
|
|
data->mPresContext->NotifyInvalidation(rect, 0);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
NotifyDidPaintSubdocumentCallback(nsIDocument* aDocument, void* aData)
|
|
{
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
nsPresContext* pc = shell->GetPresContext();
|
|
if (pc) {
|
|
pc->NotifyDidPaintForSubtree();
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsPresContext::NotifyDidPaintForSubtree()
|
|
{
|
|
if (IsRoot()) {
|
|
if (!mFireAfterPaintEvents)
|
|
return;
|
|
|
|
static_cast<nsRootPresContext*>(this)->CancelDidPaintTimer();
|
|
}
|
|
|
|
mFireAfterPaintEvents = false;
|
|
|
|
nsCOMPtr<nsIRunnable> ev =
|
|
NS_NewRunnableMethod(this, &nsPresContext::FireDOMPaintEvent);
|
|
nsContentUtils::AddScriptRunner(ev);
|
|
|
|
mDocument->EnumerateSubDocuments(NotifyDidPaintSubdocumentCallback, nullptr);
|
|
}
|
|
|
|
bool
|
|
nsPresContext::HasCachedStyleData()
|
|
{
|
|
return mShell && mShell->StyleSet()->HasCachedStyleData();
|
|
}
|
|
|
|
static bool sGotInterruptEnv = false;
|
|
enum InterruptMode {
|
|
ModeRandom,
|
|
ModeCounter,
|
|
ModeEvent
|
|
};
|
|
// Controlled by the GECKO_REFLOW_INTERRUPT_MODE env var; allowed values are
|
|
// "random" (except on Windows) or "counter". If neither is used, the mode is
|
|
// ModeEvent.
|
|
static InterruptMode sInterruptMode = ModeEvent;
|
|
// Used for the "random" mode. Controlled by the GECKO_REFLOW_INTERRUPT_SEED
|
|
// env var.
|
|
static uint32_t sInterruptSeed = 1;
|
|
// Used for the "counter" mode. This is the number of unskipped interrupt
|
|
// checks that have to happen before we interrupt. Controlled by the
|
|
// GECKO_REFLOW_INTERRUPT_FREQUENCY env var.
|
|
static uint32_t sInterruptMaxCounter = 10;
|
|
// Used for the "counter" mode. This counts up to sInterruptMaxCounter and is
|
|
// then reset to 0.
|
|
static uint32_t sInterruptCounter;
|
|
// Number of interrupt checks to skip before really trying to interrupt.
|
|
// Controlled by the GECKO_REFLOW_INTERRUPT_CHECKS_TO_SKIP env var.
|
|
static uint32_t sInterruptChecksToSkip = 200;
|
|
// Number of milliseconds that a reflow should be allowed to run for before we
|
|
// actually allow interruption. Controlled by the
|
|
// GECKO_REFLOW_MIN_NOINTERRUPT_DURATION env var. Can't be initialized here,
|
|
// because TimeDuration/TimeStamp is not safe to use in static constructors..
|
|
static TimeDuration sInterruptTimeout;
|
|
|
|
static void GetInterruptEnv()
|
|
{
|
|
char *ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_MODE");
|
|
if (ev) {
|
|
#ifndef XP_WIN
|
|
if (PL_strcasecmp(ev, "random") == 0) {
|
|
ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_SEED");
|
|
if (ev) {
|
|
sInterruptSeed = atoi(ev);
|
|
}
|
|
srandom(sInterruptSeed);
|
|
sInterruptMode = ModeRandom;
|
|
} else
|
|
#endif
|
|
if (PL_strcasecmp(ev, "counter") == 0) {
|
|
ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_FREQUENCY");
|
|
if (ev) {
|
|
sInterruptMaxCounter = atoi(ev);
|
|
}
|
|
sInterruptCounter = 0;
|
|
sInterruptMode = ModeCounter;
|
|
}
|
|
}
|
|
ev = PR_GetEnv("GECKO_REFLOW_INTERRUPT_CHECKS_TO_SKIP");
|
|
if (ev) {
|
|
sInterruptChecksToSkip = atoi(ev);
|
|
}
|
|
|
|
ev = PR_GetEnv("GECKO_REFLOW_MIN_NOINTERRUPT_DURATION");
|
|
int duration_ms = ev ? atoi(ev) : 100;
|
|
sInterruptTimeout = TimeDuration::FromMilliseconds(duration_ms);
|
|
}
|
|
|
|
bool
|
|
nsPresContext::HavePendingInputEvent()
|
|
{
|
|
switch (sInterruptMode) {
|
|
#ifndef XP_WIN
|
|
case ModeRandom:
|
|
return (random() & 1);
|
|
#endif
|
|
case ModeCounter:
|
|
if (sInterruptCounter < sInterruptMaxCounter) {
|
|
++sInterruptCounter;
|
|
return false;
|
|
}
|
|
sInterruptCounter = 0;
|
|
return true;
|
|
default:
|
|
case ModeEvent: {
|
|
nsIFrame* f = PresShell()->GetRootFrame();
|
|
if (f) {
|
|
nsIWidget* w = f->GetNearestWidget();
|
|
if (w) {
|
|
return w->HasPendingInputEvent();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsPresContext::ReflowStarted(bool aInterruptible)
|
|
{
|
|
#ifdef NOISY_INTERRUPTIBLE_REFLOW
|
|
if (!aInterruptible) {
|
|
printf("STARTING NONINTERRUPTIBLE REFLOW\n");
|
|
}
|
|
#endif
|
|
// We don't support interrupting in paginated contexts, since page
|
|
// sequences only handle initial reflow
|
|
mInterruptsEnabled = aInterruptible && !IsPaginated();
|
|
|
|
// Don't set mHasPendingInterrupt based on HavePendingInputEvent() here. If
|
|
// we ever change that, then we need to update the code in
|
|
// PresShell::DoReflow to only add the just-reflown root to dirty roots if
|
|
// it's actually dirty. Otherwise we can end up adding a root that has no
|
|
// interruptible descendants, just because we detected an interrupt at reflow
|
|
// start.
|
|
mHasPendingInterrupt = false;
|
|
|
|
mInterruptChecksToSkip = sInterruptChecksToSkip;
|
|
|
|
if (mInterruptsEnabled) {
|
|
mReflowStartTime = TimeStamp::Now();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsPresContext::CheckForInterrupt(nsIFrame* aFrame)
|
|
{
|
|
if (mHasPendingInterrupt) {
|
|
mShell->FrameNeedsToContinueReflow(aFrame);
|
|
return true;
|
|
}
|
|
|
|
if (!sGotInterruptEnv) {
|
|
sGotInterruptEnv = true;
|
|
GetInterruptEnv();
|
|
}
|
|
|
|
if (!mInterruptsEnabled) {
|
|
return false;
|
|
}
|
|
|
|
if (mInterruptChecksToSkip > 0) {
|
|
--mInterruptChecksToSkip;
|
|
return false;
|
|
}
|
|
mInterruptChecksToSkip = sInterruptChecksToSkip;
|
|
|
|
// Don't interrupt if it's been less than sInterruptTimeout since we started
|
|
// the reflow.
|
|
mHasPendingInterrupt =
|
|
TimeStamp::Now() - mReflowStartTime > sInterruptTimeout &&
|
|
HavePendingInputEvent() &&
|
|
!IsChrome();
|
|
if (mHasPendingInterrupt) {
|
|
#ifdef NOISY_INTERRUPTIBLE_REFLOW
|
|
printf("*** DETECTED pending interrupt (time=%lld)\n", PR_Now());
|
|
#endif /* NOISY_INTERRUPTIBLE_REFLOW */
|
|
mShell->FrameNeedsToContinueReflow(aFrame);
|
|
}
|
|
return mHasPendingInterrupt;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsPresContext::GetPrimaryFrameFor(nsIContent* aContent)
|
|
{
|
|
NS_PRECONDITION(aContent, "Don't do that");
|
|
if (GetPresShell() &&
|
|
GetPresShell()->GetDocument() == aContent->GetCurrentDoc()) {
|
|
return aContent->GetPrimaryFrame();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
|
|
size_t
|
|
nsPresContext::SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
|
|
{
|
|
return mPropertyTable.SizeOfExcludingThis(aMallocSizeOf);
|
|
mLangGroupFontPrefs.SizeOfExcludingThis(aMallocSizeOf);
|
|
|
|
// Measurement of other members may be added later if DMD finds it is
|
|
// worthwhile.
|
|
}
|
|
|
|
bool
|
|
nsPresContext::IsRootContentDocument()
|
|
{
|
|
// We are a root content document if: we are not a resource doc, we are
|
|
// not chrome, and we either have no parent or our parent is chrome.
|
|
if (mDocument->IsResourceDoc()) {
|
|
return false;
|
|
}
|
|
if (IsChrome()) {
|
|
return false;
|
|
}
|
|
// We may not have a root frame, so use views.
|
|
nsIView* view = PresShell()->GetViewManager()->GetRootView();
|
|
if (!view) {
|
|
return false;
|
|
}
|
|
view = view->GetParent(); // anonymous inner view
|
|
if (!view) {
|
|
return true;
|
|
}
|
|
view = view->GetParent(); // subdocumentframe's view
|
|
if (!view) {
|
|
return true;
|
|
}
|
|
|
|
nsIFrame* f = view->GetFrame();
|
|
return (f && f->PresContext()->IsChrome());
|
|
}
|
|
|
|
bool
|
|
nsPresContext::IsCrossProcessRootContentDocument()
|
|
{
|
|
if (!IsRootContentDocument()) {
|
|
return false;
|
|
}
|
|
|
|
if (XRE_GetProcessType() == GeckoProcessType_Default) {
|
|
return true;
|
|
}
|
|
|
|
TabChild* tabChild = GetTabChildFrom(mShell);
|
|
return (tabChild && tabChild->IsRootContentDocument());
|
|
}
|
|
|
|
nsRootPresContext::nsRootPresContext(nsIDocument* aDocument,
|
|
nsPresContextType aType)
|
|
: nsPresContext(aDocument, aType),
|
|
mDOMGeneration(0)
|
|
{
|
|
mRegisteredPlugins.Init();
|
|
}
|
|
|
|
nsRootPresContext::~nsRootPresContext()
|
|
{
|
|
NS_ASSERTION(mRegisteredPlugins.Count() == 0,
|
|
"All plugins should have been unregistered");
|
|
CancelDidPaintTimer();
|
|
CancelApplyPluginGeometryTimer();
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::RegisterPluginForGeometryUpdates(nsIContent* aPlugin)
|
|
{
|
|
mRegisteredPlugins.PutEntry(aPlugin);
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::UnregisterPluginForGeometryUpdates(nsIContent* aPlugin)
|
|
{
|
|
mRegisteredPlugins.RemoveEntry(aPlugin);
|
|
}
|
|
|
|
static PLDHashOperator
|
|
SetPluginHidden(nsRefPtrHashKey<nsIContent>* aEntry, void* userArg)
|
|
{
|
|
nsIFrame* root = static_cast<nsIFrame*>(userArg);
|
|
nsObjectFrame* f = static_cast<nsObjectFrame*>(aEntry->GetKey()->GetPrimaryFrame());
|
|
if (!f) {
|
|
NS_WARNING("Null frame in SetPluginHidden");
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
if (!nsLayoutUtils::IsAncestorFrameCrossDoc(root, f)) {
|
|
// f is not managed by this frame so we should ignore it.
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
f->SetEmptyWidgetConfiguration();
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::ComputePluginGeometryUpdates(nsIFrame* aFrame,
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList)
|
|
{
|
|
if (mRegisteredPlugins.Count() == 0) {
|
|
return;
|
|
}
|
|
|
|
// Initially make the next state for each plugin descendant of aFrame be
|
|
// "hidden". Plugins that are visible will have their next state set to
|
|
// unhidden by nsDisplayPlugin::ComputeVisibility.
|
|
mRegisteredPlugins.EnumerateEntries(SetPluginHidden, aFrame);
|
|
|
|
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
|
|
if (!rootFrame) {
|
|
return;
|
|
}
|
|
|
|
aBuilder->SetForPluginGeometry();
|
|
aBuilder->SetAccurateVisibleRegions();
|
|
// Merging and flattening has already been done and we should not do it
|
|
// again. nsDisplayScroll(Info)Layer doesn't support trying to flatten
|
|
// again.
|
|
aBuilder->SetAllowMergingAndFlattening(false);
|
|
nsRegion region = rootFrame->GetVisualOverflowRectRelativeToSelf();
|
|
// nsDisplayPlugin::ComputeVisibility will automatically set a non-hidden
|
|
// widget configuration for the plugin, if it's visible.
|
|
aList->ComputeVisibilityForRoot(aBuilder, ®ion);
|
|
|
|
InitApplyPluginGeometryTimer();
|
|
}
|
|
|
|
static void
|
|
ApplyPluginGeometryUpdatesCallback(nsITimer *aTimer, void *aClosure)
|
|
{
|
|
static_cast<nsRootPresContext*>(aClosure)->ApplyPluginGeometryUpdates();
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::InitApplyPluginGeometryTimer()
|
|
{
|
|
if (mApplyPluginGeometryTimer) {
|
|
return;
|
|
}
|
|
|
|
// We'll apply the plugin geometry updates during the next compositing paint in this
|
|
// presContext (either from nsPresShell::WillPaintWindow or from
|
|
// nsPresShell::DidPaintWindow, depending on the platform). But paints might
|
|
// get optimized away if the old plugin geometry covers the invalid region,
|
|
// so set a backup timer to do this too. We want to make sure this
|
|
// won't fire before our normal paint notifications, if those would
|
|
// update the geometry, so set it for double the refresh driver interval.
|
|
mApplyPluginGeometryTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (mApplyPluginGeometryTimer) {
|
|
mApplyPluginGeometryTimer->
|
|
InitWithFuncCallback(ApplyPluginGeometryUpdatesCallback, this,
|
|
nsRefreshDriver::DefaultInterval() * 2,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::CancelApplyPluginGeometryTimer()
|
|
{
|
|
if (mApplyPluginGeometryTimer) {
|
|
mApplyPluginGeometryTimer->Cancel();
|
|
mApplyPluginGeometryTimer = nullptr;
|
|
}
|
|
}
|
|
|
|
static bool
|
|
HasOverlap(const nsIntPoint& aOffset1, const nsTArray<nsIntRect>& aClipRects1,
|
|
const nsIntPoint& aOffset2, const nsTArray<nsIntRect>& aClipRects2)
|
|
{
|
|
nsIntPoint offsetDelta = aOffset1 - aOffset2;
|
|
for (uint32_t i = 0; i < aClipRects1.Length(); ++i) {
|
|
for (uint32_t j = 0; j < aClipRects2.Length(); ++j) {
|
|
if ((aClipRects1[i] + offsetDelta).Intersects(aClipRects2[j]))
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Given a list of plugin windows to move to new locations, sort the list
|
|
* so that for each window move, the window moves to a location that
|
|
* does not intersect other windows. This minimizes flicker and repainting.
|
|
* It's not always possible to do this perfectly, since in general
|
|
* we might have cycles. But we do our best.
|
|
* We need to take into account that windows are clipped to particular
|
|
* regions and the clip regions change as the windows are moved.
|
|
*/
|
|
static void
|
|
SortConfigurations(nsTArray<nsIWidget::Configuration>* aConfigurations)
|
|
{
|
|
if (aConfigurations->Length() > 10) {
|
|
// Give up, we don't want to get bogged down here
|
|
return;
|
|
}
|
|
|
|
nsTArray<nsIWidget::Configuration> pluginsToMove;
|
|
pluginsToMove.SwapElements(*aConfigurations);
|
|
|
|
// Our algorithm is quite naive. At each step we try to identify
|
|
// a window that can be moved to its new location that won't overlap
|
|
// any other windows at the new location. If there is no such
|
|
// window, we just move the last window in the list anyway.
|
|
while (!pluginsToMove.IsEmpty()) {
|
|
// Find a window whose destination does not overlap any other window
|
|
uint32_t i;
|
|
for (i = 0; i + 1 < pluginsToMove.Length(); ++i) {
|
|
nsIWidget::Configuration* config = &pluginsToMove[i];
|
|
bool foundOverlap = false;
|
|
for (uint32_t j = 0; j < pluginsToMove.Length(); ++j) {
|
|
if (i == j)
|
|
continue;
|
|
nsIntRect bounds;
|
|
pluginsToMove[j].mChild->GetBounds(bounds);
|
|
nsAutoTArray<nsIntRect,1> clipRects;
|
|
pluginsToMove[j].mChild->GetWindowClipRegion(&clipRects);
|
|
if (HasOverlap(bounds.TopLeft(), clipRects,
|
|
config->mBounds.TopLeft(),
|
|
config->mClipRegion)) {
|
|
foundOverlap = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!foundOverlap)
|
|
break;
|
|
}
|
|
// Note that we always move the last plugin in pluginsToMove, if we
|
|
// can't find any other plugin to move
|
|
aConfigurations->AppendElement(pluginsToMove[i]);
|
|
pluginsToMove.RemoveElementAt(i);
|
|
}
|
|
}
|
|
|
|
static PLDHashOperator
|
|
PluginDidSetGeometryEnumerator(nsRefPtrHashKey<nsIContent>* aEntry, void* userArg)
|
|
{
|
|
nsObjectFrame* f = static_cast<nsObjectFrame*>(aEntry->GetKey()->GetPrimaryFrame());
|
|
if (!f) {
|
|
NS_WARNING("Null frame in PluginDidSetGeometryEnumerator");
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
f->DidSetWidgetGeometry();
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
struct PluginGetGeometryUpdateClosure {
|
|
nsTArray<nsIWidget::Configuration> mConfigurations;
|
|
};
|
|
static PLDHashOperator
|
|
PluginGetGeometryUpdate(nsRefPtrHashKey<nsIContent>* aEntry, void* userArg)
|
|
{
|
|
PluginGetGeometryUpdateClosure* closure =
|
|
static_cast<PluginGetGeometryUpdateClosure*>(userArg);
|
|
nsObjectFrame* f = static_cast<nsObjectFrame*>(aEntry->GetKey()->GetPrimaryFrame());
|
|
if (!f) {
|
|
NS_WARNING("Null frame in GetPluginGeometryUpdate");
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
f->GetWidgetConfiguration(&closure->mConfigurations);
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::ApplyPluginGeometryUpdates()
|
|
{
|
|
CancelApplyPluginGeometryTimer();
|
|
|
|
PluginGetGeometryUpdateClosure closure;
|
|
mRegisteredPlugins.EnumerateEntries(PluginGetGeometryUpdate, &closure);
|
|
// Walk mRegisteredPlugins and ask each plugin for its configuration
|
|
if (!closure.mConfigurations.IsEmpty()) {
|
|
nsIWidget* widget = closure.mConfigurations[0].mChild->GetParent();
|
|
NS_ASSERTION(widget, "Plugins must have a parent window");
|
|
SortConfigurations(&closure.mConfigurations);
|
|
widget->ConfigureChildren(closure.mConfigurations);
|
|
}
|
|
mRegisteredPlugins.EnumerateEntries(PluginDidSetGeometryEnumerator, nullptr);
|
|
}
|
|
|
|
static void
|
|
NotifyDidPaintForSubtreeCallback(nsITimer *aTimer, void *aClosure)
|
|
{
|
|
nsPresContext* presContext = (nsPresContext*)aClosure;
|
|
nsAutoScriptBlocker blockScripts;
|
|
presContext->NotifyDidPaintForSubtree();
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::EnsureEventualDidPaintEvent()
|
|
{
|
|
if (mNotifyDidPaintTimer)
|
|
return;
|
|
mNotifyDidPaintTimer = do_CreateInstance("@mozilla.org/timer;1");
|
|
if (!mNotifyDidPaintTimer)
|
|
return;
|
|
mNotifyDidPaintTimer->InitWithFuncCallback(NotifyDidPaintForSubtreeCallback,
|
|
(void*)this, 100, nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
|
|
void
|
|
nsRootPresContext::AddWillPaintObserver(nsIRunnable* aRunnable)
|
|
{
|
|
if (!mWillPaintFallbackEvent.IsPending()) {
|
|
mWillPaintFallbackEvent = new RunWillPaintObservers(this);
|
|
NS_DispatchToMainThread(mWillPaintFallbackEvent.get());
|
|
}
|
|
mWillPaintObservers.AppendElement(aRunnable);
|
|
}
|
|
|
|
/**
|
|
* Run all runnables that need to get called before the next paint.
|
|
*/
|
|
void
|
|
nsRootPresContext::FlushWillPaintObservers()
|
|
{
|
|
mWillPaintFallbackEvent = nullptr;
|
|
nsTArray<nsCOMPtr<nsIRunnable> > observers;
|
|
observers.SwapElements(mWillPaintObservers);
|
|
for (uint32_t i = 0; i < observers.Length(); ++i) {
|
|
observers[i]->Run();
|
|
}
|
|
}
|
|
|
|
size_t
|
|
nsRootPresContext::SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf) const
|
|
{
|
|
return nsPresContext::SizeOfExcludingThis(aMallocSizeOf);
|
|
|
|
// Measurement of the following members may be added later if DMD finds it is
|
|
// worthwhile:
|
|
// - mNotifyDidPaintTimer
|
|
// - mRegisteredPlugins
|
|
// - mWillPaintObservers
|
|
// - mWillPaintFallbackEvent
|
|
}
|