8b3489a026
Make the line list doubly linked and access it through a list class and iterators. Stop recomputing margins on all of the children of each block in the reflow chain (which causes O(N^2) state recovery during incremental reflow). Instead, add a second dirty bit to the lines and walk backwards through the line list to recompute vertical margins only when either dirty bit is set and the previous line was not reflowed. Add nsIFrame::IsEmpty to identify frames through which margins collapse. Fix O(N^2) propagation of float damage by maintaining a set of intervals damaged by floats (bug 61962) and be sure to damage the correct areas (bug 48138). Introduce nsCollapsingMargin to do correct collapsing of combinations of positive and negative margins (bug 50142). Clean up some odds and ends and fix another smaller O(N^2) problem in nsBlockFrame::AddFrames. r=attinasi, rbs sr=waterson git-svn-id: svn://10.0.0.236/trunk@106224 18797224-902f-48f8-a5cc-f745e15eee43
235 lines
8.6 KiB
C++
235 lines
8.6 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 Communicator client 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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#ifndef nsInlineFrame_h___
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#define nsInlineFrame_h___
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#include "nsHTMLContainerFrame.h"
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#include "nsAbsoluteContainingBlock.h"
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#include "nsLineLayout.h"
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class nsAnonymousBlockFrame;
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#define NS_INLINE_FRAME_CID \
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{ 0xa6cf90e0, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
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#define nsInlineFrameSuper nsHTMLContainerFrame
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#define NS_INLINE_FRAME_CONTAINS_PERCENT_AWARE_CHILD 0x00100000
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/**
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* Inline frame class.
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*
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* This class manages a list of child frames that are inline frames. Working with
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* nsLineLayout, the class will reflow and place inline frames on a line.
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*/
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class nsInlineFrame : public nsInlineFrameSuper
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{
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public:
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friend nsresult NS_NewInlineFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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// nsISupports overrides
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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// nsIFrame overrides
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD ReplaceFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame,
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nsIFrame* aNewFrame);
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NS_IMETHOD ReflowDirtyChild(nsIPresShell* aPresShell, nsIFrame* aChild);
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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#endif
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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NS_IMETHOD IsEmpty(PRBool aIsQuirkMode, PRBool aIsPre, PRBool* aResult);
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// nsIHTMLReflow overrides
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD CanContinueTextRun(PRBool& aContinueTextRun) const;
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static nsIID kInlineFrameCID;
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// Take all of the frames away from this frame. The caller is
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// presumed to keep them alive.
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void StealAllFrames() {
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mFrames.SetFrames(nsnull);
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}
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protected:
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// Additional reflow state used during our reflow methods
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struct InlineReflowState {
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nsIFrame* mNextRCFrame;
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nsIFrame* mPrevFrame;
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nsInlineFrame* mNextInFlow;
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PRPackedBool mSetParentPointer; // when reflowing child frame first set its
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// parent frame pointer
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InlineReflowState() {
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mNextRCFrame = nsnull;
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mPrevFrame = nsnull;
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mNextInFlow = nsnull;
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mSetParentPointer = PR_FALSE;
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};
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};
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nsInlineFrame();
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virtual PRIntn GetSkipSides() const;
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nsresult ReflowFrames(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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InlineReflowState& rs,
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nsHTMLReflowMetrics& aMetrics,
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nsReflowStatus& aStatus);
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nsresult ReflowInlineFrame(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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InlineReflowState& rs,
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nsIFrame* aFrame,
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nsReflowStatus& aStatus);
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virtual nsIFrame* PullOneFrame(nsIPresContext* aPresContext,
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InlineReflowState& rs,
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PRBool* aIsComplete);
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virtual void PushFrames(nsIPresContext* aPresContext,
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nsIFrame* aFromChild,
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nsIFrame* aPrevSibling);
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};
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//----------------------------------------------------------------------
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/**
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* Variation on inline-frame used to manage lines for line layout in
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* special situations (:first-line style in particular).
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*/
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class nsFirstLineFrame : public nsInlineFrame {
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public:
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friend nsresult NS_NewFirstLineFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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#endif
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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// Take frames starting at aFrame until the end of the frame-list
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// away from this frame. The caller is presumed to keep them alive.
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void StealFramesFrom(nsIFrame* aFrame);
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protected:
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nsFirstLineFrame();
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virtual nsIFrame* PullOneFrame(nsIPresContext* aPresContext,
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InlineReflowState& rs,
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PRBool* aIsComplete);
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};
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//----------------------------------------------------------------------
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// Derived class created for relatively positioned inline-level elements
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// that acts as a containing block for child absolutely positioned
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// elements
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class nsPositionedInlineFrame : public nsInlineFrame
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{
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public:
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NS_IMETHOD Destroy(nsIPresContext* aPresContext);
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#ifdef DEBUG
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NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
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#endif
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NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
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nsIAtom** aListName) const;
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NS_IMETHOD FirstChild(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame** aFirstChild) const;
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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protected:
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nsAbsoluteContainingBlock mAbsoluteContainer;
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};
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#endif /* nsInlineFrame_h___ */
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