mirror of
https://github.com/mozilla/gecko-dev.git
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5ba9439c07
area, and not the padding area as per the CSS 2 Errata, CSS2.1 and CSS3. Also, implementing the CSS3 'background-clip' and 'background-origin' properties (currently with -moz- prefixes) to control this behavior. Bug 162252, r=dbaron sr=roc+moz
627 lines
23 KiB
C++
627 lines
23 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsHTMLContainerFrame.h"
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#include "nsIRenderingContext.h"
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#include "nsIPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsCSSRendering.h"
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#include "nsIContent.h"
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#include "nsLayoutAtoms.h"
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#include "nsIWidget.h"
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#include "nsILinkHandler.h"
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#include "nsHTMLValue.h"
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#include "nsGUIEvent.h"
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#include "nsIDocument.h"
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#include "nsIURL.h"
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#include "nsPlaceholderFrame.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLParts.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsViewsCID.h"
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#include "nsIDOMEvent.h"
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#include "nsIScrollableView.h"
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#include "nsWidgetsCID.h"
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#include "nsIStyleSet.h"
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#include "nsCOMPtr.h"
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#include "nsReflowPath.h"
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static NS_DEFINE_CID(kCChildCID, NS_CHILD_CID);
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NS_IMETHODIMP
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nsHTMLContainerFrame::Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags)
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{
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if (NS_FRAME_IS_UNFLOWABLE & mState) {
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return NS_OK;
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}
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nsCOMPtr<nsIAtom> frameType;
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GetFrameType(getter_AddRefs(frameType));
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// Paint inline element backgrounds in the foreground layer, but
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// others in the background (bug 36710).
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if (((frameType.get() == nsLayoutAtoms::inlineFrame)?NS_FRAME_PAINT_LAYER_FOREGROUND:NS_FRAME_PAINT_LAYER_BACKGROUND) == aWhichLayer) {
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const nsStyleVisibility* vis =
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(const nsStyleVisibility*)((nsIStyleContext*)mStyleContext)->GetStyleData(eStyleStruct_Visibility);
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if (vis->IsVisible() && mRect.width && mRect.height) {
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// Paint our background and border
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PRIntn skipSides = GetSkipSides();
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const nsStyleBorder* border = (const nsStyleBorder*)
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mStyleContext->GetStyleData(eStyleStruct_Border);
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const nsStylePadding* padding = (const nsStylePadding*)
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mStyleContext->GetStyleData(eStyleStruct_Padding);
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const nsStyleOutline* outline = (const nsStyleOutline*)
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mStyleContext->GetStyleData(eStyleStruct_Outline);
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nsRect rect(0, 0, mRect.width, mRect.height);
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *border, *padding,
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0, 0);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *border, mStyleContext,
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skipSides);
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nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *border, *outline,
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mStyleContext, 0);
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// The sole purpose of this is to trigger display
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// of the selection window for Named Anchors,
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// which don't have any children and normally don't
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// have any size, but in Editor we use CSS to display
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// an image to represent this "hidden" element.
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if (!mFrames.FirstChild())
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{
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nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer, aFlags);
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}
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}
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}
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if (frameType.get() == nsLayoutAtoms::canvasFrame) {
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// We are wrapping the root frame of a document. We
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// need to check the pres shell to find out if painting is locked
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// down (because we're still in the early stages of document
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// and frame construction. If painting is locked down, then we
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// do not paint our children.
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PRBool paintingSuppressed = PR_FALSE;
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nsCOMPtr<nsIPresShell> shell;
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aPresContext->GetShell(getter_AddRefs(shell));
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shell->IsPaintingSuppressed(&paintingSuppressed);
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if (paintingSuppressed)
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return NS_OK;
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}
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// Now paint the kids. Note that child elements have the opportunity to
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// override the visibility property and display even if their parent is
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// hidden
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PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer, aFlags);
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return NS_OK;
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}
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/**
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* Create a next-in-flow for aFrame. Will return the newly created
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* frame in aNextInFlowResult <b>if and only if</b> a new frame is
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* created; otherwise nsnull is returned in aNextInFlowResult.
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*/
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nsresult
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nsHTMLContainerFrame::CreateNextInFlow(nsIPresContext* aPresContext,
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nsIFrame* aOuterFrame,
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nsIFrame* aFrame,
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nsIFrame*& aNextInFlowResult)
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{
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aNextInFlowResult = nsnull;
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nsIFrame* nextInFlow;
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aFrame->GetNextInFlow(&nextInFlow);
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if (nsnull == nextInFlow) {
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// Create a continuation frame for the child frame and insert it
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// into our lines child list.
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nsIFrame* nextFrame;
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aFrame->GetNextSibling(&nextFrame);
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nsIPresShell* presShell;
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nsIStyleSet* styleSet;
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aPresContext->GetShell(&presShell);
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presShell->GetStyleSet(&styleSet);
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NS_RELEASE(presShell);
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styleSet->CreateContinuingFrame(aPresContext, aFrame, aOuterFrame, &nextInFlow);
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NS_RELEASE(styleSet);
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if (nsnull == nextInFlow) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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aFrame->SetNextSibling(nextInFlow);
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nextInFlow->SetNextSibling(nextFrame);
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NS_FRAME_LOG(NS_FRAME_TRACE_NEW_FRAMES,
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("nsHTMLContainerFrame::MaybeCreateNextInFlow: frame=%p nextInFlow=%p",
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aFrame, nextInFlow));
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aNextInFlowResult = nextInFlow;
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}
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return NS_OK;
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}
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static nsresult
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ReparentFrameViewTo(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIViewManager* aViewManager,
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nsIView* aNewParentView,
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nsIView* aOldParentView)
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{
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nsIView* view;
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// XXX What to do about placeholder views for "position: fixed" elements?
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// They should be reparented too.
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// Does aFrame have a view?
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aFrame->GetView(aPresContext, &view);
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if (view) {
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// Verify that the current parent view is what we think it is
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//nsIView* parentView;
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//NS_ASSERTION(parentView == aOldParentView, "unexpected parent view");
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aViewManager->RemoveChild(view);
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// The view will remember the Z-order and other attributes that have been set on it.
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// XXX Pretend this view is last of the parent's views in document order
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aViewManager->InsertChild(aNewParentView, view, nsnull, PR_TRUE);
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} else {
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// Iterate the child frames, and check each child frame to see if it has
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// a view
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nsIFrame* childFrame;
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aFrame->FirstChild(aPresContext, nsnull, &childFrame);
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while (childFrame) {
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ReparentFrameViewTo(aPresContext, childFrame, aViewManager, aNewParentView, aOldParentView);
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childFrame->GetNextSibling(&childFrame);
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}
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// Also check the overflow-list
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aFrame->FirstChild(aPresContext, nsLayoutAtoms::overflowList, &childFrame);
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while (childFrame) {
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ReparentFrameViewTo(aPresContext, childFrame, aViewManager, aNewParentView, aOldParentView);
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childFrame->GetNextSibling(&childFrame);
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}
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// Also check the floater-list
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aFrame->FirstChild(aPresContext, nsLayoutAtoms::floaterList, &childFrame);
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while (childFrame) {
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ReparentFrameViewTo(aPresContext, childFrame, aViewManager, aNewParentView, aOldParentView);
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childFrame->GetNextSibling(&childFrame);
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}
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}
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return NS_OK;
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}
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// Helper function that returns the nearest view to this frame. Checks
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// this frame, its parent frame, its parent frame, ...
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static nsIView*
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GetClosestViewFor(nsIPresContext* aPresContext, nsIFrame* aFrame)
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{
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NS_PRECONDITION(aFrame, "null frame pointer");
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nsIView* view;
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do {
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aFrame->GetView(aPresContext, &view);
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if (view) {
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break;
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}
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aFrame->GetParent(&aFrame);
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} while (aFrame);
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NS_POSTCONDITION(view, "no containing view");
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return view;
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}
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nsresult
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nsHTMLContainerFrame::ReparentFrameView(nsIPresContext* aPresContext,
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nsIFrame* aChildFrame,
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nsIFrame* aOldParentFrame,
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nsIFrame* aNewParentFrame)
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{
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NS_PRECONDITION(aChildFrame, "null child frame pointer");
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NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
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NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
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NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "same old and new parent frame");
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nsIView* childView;
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nsIView* oldParentView;
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nsIView* newParentView;
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// This code is called often and we need it to be as fast as possible, so
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// see if we can trivially detect that no work needs to be done
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aChildFrame->GetView(aPresContext, &childView);
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if (!childView) {
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// Child frame doesn't have a view. See if it has any child frames
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nsIFrame* firstChild;
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aChildFrame->FirstChild(aPresContext, nsnull, &firstChild);
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if (!firstChild) {
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return NS_OK;
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}
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}
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// See if either the old parent frame or the new parent frame have a view
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aOldParentFrame->GetView(aPresContext, &oldParentView);
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aNewParentFrame->GetView(aPresContext, &newParentView);
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if (!oldParentView && !newParentView) {
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// Walk up both the old parent frame and the new parent frame nodes
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// stopping when we either find a common parent or views for one
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// or both of the frames.
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//
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// This works well in the common case where we push/pull and the old parent
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// frame and the new parent frame are part of the same flow. They will
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// typically be the same distance (height wise) from the
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do {
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aOldParentFrame->GetParent(&aOldParentFrame);
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aNewParentFrame->GetParent(&aNewParentFrame);
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// We should never walk all the way to the root frame without finding
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// a view
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NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
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// See if we reached a common parent
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if (aOldParentFrame == aNewParentFrame) {
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break;
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}
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// Get the views
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aOldParentFrame->GetView(aPresContext, &oldParentView);
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aNewParentFrame->GetView(aPresContext, &newParentView);
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} while (!(oldParentView || newParentView));
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}
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// See if we found a common parent frame
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if (aOldParentFrame == aNewParentFrame) {
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// We found a common parent and there are no views between the old parent
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// and the common parent or the new parent frame and the common parent.
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// Because neither the old parent frame nor the new parent frame have views,
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// then any child views don't need reparenting
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return NS_OK;
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}
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// We found views for one or both of the parent frames before we found a
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// common parent
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NS_ASSERTION(oldParentView || newParentView, "internal error");
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if (!oldParentView) {
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oldParentView = GetClosestViewFor(aPresContext, aOldParentFrame);
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}
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if (!newParentView) {
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newParentView = GetClosestViewFor(aPresContext, aNewParentFrame);
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}
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// See if the old parent frame and the new parent frame are in the
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// same view sub-hierarchy. If they are then we don't have to do
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// anything
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if (oldParentView != newParentView) {
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nsCOMPtr<nsIViewManager> viewManager;
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oldParentView->GetViewManager(*getter_AddRefs(viewManager));
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// They're not so we need to reparent any child views
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return ReparentFrameViewTo(aPresContext, aChildFrame, viewManager, newParentView,
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oldParentView);
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}
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return NS_OK;
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}
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nsresult
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nsHTMLContainerFrame::ReparentFrameViewList(nsIPresContext* aPresContext,
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nsIFrame* aChildFrameList,
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nsIFrame* aOldParentFrame,
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nsIFrame* aNewParentFrame)
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{
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NS_PRECONDITION(aChildFrameList, "null child frame list");
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NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
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NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
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NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "same old and new parent frame");
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nsIView* oldParentView;
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nsIView* newParentView;
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// See if either the old parent frame or the new parent frame have a view
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aOldParentFrame->GetView(aPresContext, &oldParentView);
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aNewParentFrame->GetView(aPresContext, &newParentView);
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if (!oldParentView && !newParentView) {
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// Walk up both the old parent frame and the new parent frame nodes
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// stopping when we either find a common parent or views for one
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// or both of the frames.
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//
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// This works well in the common case where we push/pull and the old parent
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// frame and the new parent frame are part of the same flow. They will
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// typically be the same distance (height wise) from the
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do {
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aOldParentFrame->GetParent(&aOldParentFrame);
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aNewParentFrame->GetParent(&aNewParentFrame);
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// We should never walk all the way to the root frame without finding
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// a view
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NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
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// See if we reached a common parent
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if (aOldParentFrame == aNewParentFrame) {
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break;
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}
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// Get the views
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aOldParentFrame->GetView(aPresContext, &oldParentView);
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aNewParentFrame->GetView(aPresContext, &newParentView);
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} while (!(oldParentView || newParentView));
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}
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// See if we found a common parent frame
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if (aOldParentFrame == aNewParentFrame) {
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// We found a common parent and there are no views between the old parent
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// and the common parent or the new parent frame and the common parent.
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// Because neither the old parent frame nor the new parent frame have views,
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// then any child views don't need reparenting
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return NS_OK;
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}
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// We found views for one or both of the parent frames before we found a
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// common parent
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NS_ASSERTION(oldParentView || newParentView, "internal error");
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if (!oldParentView) {
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oldParentView = GetClosestViewFor(aPresContext, aOldParentFrame);
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}
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if (!newParentView) {
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newParentView = GetClosestViewFor(aPresContext, aNewParentFrame);
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}
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// See if the old parent frame and the new parent frame are in the
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// same view sub-hierarchy. If they are then we don't have to do
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// anything
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if (oldParentView != newParentView) {
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nsCOMPtr<nsIViewManager> viewManager;
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oldParentView->GetViewManager(*getter_AddRefs(viewManager));
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// They're not so we need to reparent any child views
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for (nsIFrame* f = aChildFrameList; f; f->GetNextSibling(&f)) {
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ReparentFrameViewTo(aPresContext, f, viewManager, newParentView,
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oldParentView);
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}
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}
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return NS_OK;
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}
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nsresult
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nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsIStyleContext* aStyleContext,
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nsIFrame* aContentParentFrame,
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PRBool aForce)
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{
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nsIView* view;
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aFrame->GetView(aPresContext, &view);
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if (nsnull != view) {
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return NS_OK;
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}
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// If we don't yet have a view, see if we need a view
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if (!(aForce || FrameNeedsView(aPresContext, aFrame, aStyleContext))) {
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// don't need a view
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return NS_OK;
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}
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// Create a view
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nsIFrame* parent = nsnull;
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aFrame->GetParentWithView(aPresContext, &parent);
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NS_ASSERTION(parent, "GetParentWithView failed");
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nsIView* parentView = nsnull;
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parent->GetView(aPresContext, &parentView);
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NS_ASSERTION(parentView, "no parent with view");
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// Create a view
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static NS_DEFINE_CID(kViewCID, NS_VIEW_CID);
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nsresult result = CallCreateInstance(kViewCID, &view);
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if (NS_FAILED(result)) {
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return result;
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}
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nsCOMPtr<nsIViewManager> viewManager;
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parentView->GetViewManager(*getter_AddRefs(viewManager));
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NS_ASSERTION(nsnull != viewManager, "null view manager");
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// Initialize the view
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nsRect bounds;
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aFrame->GetRect(bounds);
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view->Init(viewManager, bounds, parentView);
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|
|
SyncFrameViewProperties(aPresContext, aFrame, aStyleContext, view);
|
|
|
|
// Insert the view into the view hierarchy. If the parent view is a
|
|
// scrolling view we need to do this differently
|
|
nsIScrollableView* scrollingView;
|
|
if (NS_SUCCEEDED(CallQueryInterface(parentView, &scrollingView))) {
|
|
scrollingView->SetScrolledView(view);
|
|
} else {
|
|
// XXX Drop it at the end of the document order until we can do better
|
|
viewManager->InsertChild(parentView, view, nsnull, PR_TRUE);
|
|
|
|
if (nsnull != aContentParentFrame) {
|
|
// If, for some reason, GetView below fails to initialize zParentView,
|
|
// then ensure that we completely bypass InsertZPlaceholder below.
|
|
// The effect will be as if we never knew about aContentParentFrame
|
|
// in the first place, so at least this code won't be doing any damage.
|
|
nsIView* zParentView = parentView;
|
|
|
|
aContentParentFrame->GetView(aPresContext, &zParentView);
|
|
|
|
if (nsnull == zParentView) {
|
|
nsIFrame* zParentFrame = nsnull;
|
|
|
|
aContentParentFrame->GetParentWithView(aPresContext, &zParentFrame);
|
|
NS_ASSERTION(zParentFrame, "GetParentWithView failed");
|
|
zParentFrame->GetView(aPresContext, &zParentView);
|
|
NS_ASSERTION(zParentView, "no parent with view");
|
|
}
|
|
|
|
if (zParentView != parentView) {
|
|
viewManager->InsertZPlaceholder(zParentView, view, nsnull, PR_TRUE);
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX If it's fixed positioned, then create a widget so it floats
|
|
// above the scrolling area
|
|
const nsStyleDisplay* display;
|
|
::GetStyleData(aStyleContext, &display);
|
|
if (NS_STYLE_POSITION_FIXED == display->mPosition) {
|
|
view->CreateWidget(kCChildCID);
|
|
}
|
|
|
|
// Remember our view
|
|
aFrame->SetView(aPresContext, view);
|
|
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
|
("nsHTMLContainerFrame::CreateViewForFrame: frame=%p view=%p",
|
|
aFrame));
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsHTMLContainerFrame::CheckInvalidateBorder(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState)
|
|
{
|
|
// XXX This method ought to deal with padding as well
|
|
// If this is a style change reflow targeted at this frame, we must repaint
|
|
// everything (well, we really just have to repaint the borders but we're
|
|
// a bunch of lazybones).
|
|
if (aReflowState.reason == eReflowReason_Incremental) {
|
|
nsHTMLReflowCommand *command = aReflowState.path->mReflowCommand;
|
|
if (command) {
|
|
nsReflowType type;
|
|
command->GetType(type);
|
|
if (type == eReflowType_StyleChanged) {
|
|
|
|
#ifdef NOISY_BLOCK_INVALIDATE
|
|
printf("%p invalidate 1 (%d, %d, %d, %d)\n",
|
|
this, 0, 0, mRect.width, mRect.height);
|
|
#endif
|
|
|
|
// Lots of things could have changed so damage our entire bounds
|
|
nsRect damageRect(0, 0, mRect.width, mRect.height);
|
|
if (!damageRect.IsEmpty()) {
|
|
Invalidate(aPresContext,damageRect);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we changed size, we must invalidate the parts of us that have changed
|
|
// to make the border show up.
|
|
if ((aReflowState.reason == eReflowReason_Incremental ||
|
|
aReflowState.reason == eReflowReason_Dirty)) {
|
|
nsMargin border = aReflowState.mComputedBorderPadding -
|
|
aReflowState.mComputedPadding;
|
|
|
|
// See if our width changed
|
|
if ((aDesiredSize.width != mRect.width) && (border.right > 0)) {
|
|
nsRect damageRect;
|
|
|
|
if (aDesiredSize.width < mRect.width) {
|
|
// Our new width is smaller, so we need to make sure that
|
|
// we paint our border in its new position
|
|
damageRect.x = aDesiredSize.width - border.right;
|
|
damageRect.width = border.right;
|
|
damageRect.y = 0;
|
|
damageRect.height = aDesiredSize.height;
|
|
} else {
|
|
// Our new width is larger, so we need to erase our border in its
|
|
// old position
|
|
damageRect.x = mRect.width - border.right;
|
|
damageRect.width = border.right;
|
|
damageRect.y = 0;
|
|
damageRect.height = mRect.height;
|
|
}
|
|
|
|
#ifdef NOISY_BLOCK_INVALIDATE
|
|
printf("%p invalidate 2 (%d, %d, %d, %d)\n",
|
|
this, damageRect.x, damageRect.y, damageRect.width, damageRect.height);
|
|
#endif
|
|
if (!damageRect.IsEmpty()) {
|
|
Invalidate(aPresContext, damageRect);
|
|
}
|
|
}
|
|
|
|
// See if our height changed
|
|
if ((aDesiredSize.height != mRect.height) && (border.bottom > 0)) {
|
|
nsRect damageRect;
|
|
|
|
if (aDesiredSize.height < mRect.height) {
|
|
// Our new height is smaller, so we need to make sure that
|
|
// we paint our border in its new position
|
|
damageRect.x = 0;
|
|
damageRect.width = aDesiredSize.width;
|
|
damageRect.y = aDesiredSize.height - border.bottom;
|
|
damageRect.height = border.bottom;
|
|
|
|
} else {
|
|
// Our new height is larger, so we need to erase our border in its
|
|
// old position
|
|
damageRect.x = 0;
|
|
damageRect.width = mRect.width;
|
|
damageRect.y = mRect.height - border.bottom;
|
|
damageRect.height = border.bottom;
|
|
}
|
|
#ifdef NOISY_BLOCK_INVALIDATE
|
|
printf("%p invalidate 3 (%d, %d, %d, %d)\n",
|
|
this, damageRect.x, damageRect.y, damageRect.width, damageRect.height);
|
|
#endif
|
|
if (!damageRect.IsEmpty()) {
|
|
Invalidate(aPresContext, damageRect);
|
|
}
|
|
}
|
|
}
|
|
}
|