author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 01:32:07 +0300 | |
changeset 2 | 303757a437d3 |
parent 0 | 4f2f89ce4247 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
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* (C) 1999 Antti Koivisto (koivisto@kde.org) |
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* (C) 2007 David Smith (catfish.man@gmail.com) |
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* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public License |
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* along with this library; see the file COPYING.LIB. If not, write to |
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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* Boston, MA 02110-1301, USA. |
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*/ |
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#ifndef RenderBlock_h |
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#define RenderBlock_h |
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#include "DeprecatedPtrList.h" |
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#include "GapRects.h" |
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#include "RenderBox.h" |
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#include "RenderLineBoxList.h" |
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#include "RootInlineBox.h" |
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#include <wtf/ListHashSet.h> |
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namespace WebCore { |
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class InlineIterator; |
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class RenderInline; |
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struct BidiRun; |
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template <class Iterator, class Run> class BidiResolver; |
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template <class Iterator> struct MidpointState; |
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typedef BidiResolver<InlineIterator, BidiRun> InlineBidiResolver; |
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typedef MidpointState<InlineIterator> LineMidpointState; |
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enum CaretType { CursorCaret, DragCaret }; |
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class RenderBlock : public RenderBox { |
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public: |
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RenderBlock(Node*); |
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virtual ~RenderBlock(); |
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const RenderObjectChildList* children() const { return &m_children; } |
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RenderObjectChildList* children() { return &m_children; } |
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virtual void destroy(); |
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// These two functions are overridden for inline-block. |
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virtual int lineHeight(bool firstLine, bool isRootLineBox = false) const; |
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virtual int baselinePosition(bool firstLine, bool isRootLineBox = false) const; |
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RenderLineBoxList* lineBoxes() { return &m_lineBoxes; } |
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const RenderLineBoxList* lineBoxes() const { return &m_lineBoxes; } |
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InlineFlowBox* firstLineBox() const { return m_lineBoxes.firstLineBox(); } |
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InlineFlowBox* lastLineBox() const { return m_lineBoxes.lastLineBox(); } |
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void deleteLineBoxTree(); |
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virtual void addChild(RenderObject* newChild, RenderObject* beforeChild = 0); |
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virtual void removeChild(RenderObject*); |
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virtual void layoutBlock(bool relayoutChildren); |
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void insertPositionedObject(RenderBox*); |
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void removePositionedObject(RenderBox*); |
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void removePositionedObjects(RenderBlock*); |
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typedef ListHashSet<RenderBox*, 4> PositionedObjectsListHashSet; |
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PositionedObjectsListHashSet* positionedObjects() const { return m_positionedObjects; } |
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void addPercentHeightDescendant(RenderBox*); |
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static void removePercentHeightDescendant(RenderBox*); |
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HashSet<RenderBox*>* percentHeightDescendants() const; |
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RootInlineBox* createAndAppendRootInlineBox(); |
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bool generatesLineBoxesForInlineChild(RenderObject*, bool isLineEmpty = true, bool previousLineBrokeCleanly = true); |
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void markAllDescendantsWithFloatsForLayout(RenderBox* floatToRemove = 0, bool inLayout = true); |
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void markPositionedObjectsForLayout(); |
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bool containsFloats() { return m_floatingObjects && !m_floatingObjects->isEmpty(); } |
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bool containsFloat(RenderObject*); |
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int lineWidth(int y, bool firstLine) const; |
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virtual int lowestPosition(bool includeOverflowInterior = true, bool includeSelf = true) const; |
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virtual int rightmostPosition(bool includeOverflowInterior = true, bool includeSelf = true) const; |
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virtual int leftmostPosition(bool includeOverflowInterior = true, bool includeSelf = true) const; |
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int rightOffset(int y, bool firstLine) const { return rightRelOffset(y, rightOffset(), firstLine); } |
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int leftOffset(int y, bool firstLine) const { return leftRelOffset(y, leftOffset(), firstLine); } |
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virtual VisiblePosition positionForPoint(const IntPoint&); |
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// Block flows subclass availableWidth to handle multi column layout (shrinking the width available to children when laying out.) |
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virtual int availableWidth() const; |
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RootInlineBox* firstRootBox() const { return static_cast<RootInlineBox*>(firstLineBox()); } |
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RootInlineBox* lastRootBox() const { return static_cast<RootInlineBox*>(lastLineBox()); } |
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bool containsNonZeroBidiLevel() const; |
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GapRects selectionGapRectsForRepaint(RenderBoxModelObject* repaintContainer); |
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IntRect fillLeftSelectionGap(RenderObject* selObj, int xPos, int yPos, int height, RenderBlock* rootBlock, |
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int blockX, int blockY, int tx, int ty, const PaintInfo*); |
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IntRect fillRightSelectionGap(RenderObject* selObj, int xPos, int yPos, int height, RenderBlock* rootBlock, |
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int blockX, int blockY, int tx, int ty, const PaintInfo*); |
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IntRect fillHorizontalSelectionGap(RenderObject* selObj, int xPos, int yPos, int width, int height, const PaintInfo*); |
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void getHorizontalSelectionGapInfo(SelectionState, bool& leftGap, bool& rightGap); |
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// Helper methods for computing line counts and heights for line counts. |
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RootInlineBox* lineAtIndex(int); |
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int lineCount(); |
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int heightForLineCount(int); |
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void clearTruncation(); |
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void adjustRectForColumns(IntRect&) const; |
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virtual void adjustForColumns(IntSize&, const IntPoint&) const; |
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void addContinuationWithOutline(RenderInline*); |
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RenderBoxModelObject* continuation() const { return m_continuation; } |
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void setContinuation(RenderBoxModelObject* c) { m_continuation = c; } |
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virtual RenderBoxModelObject* virtualContinuation() const { return continuation(); } |
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bool isAnonymousBlockContinuation() const { return continuation() && isAnonymousBlock(); } |
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RenderInline* inlineElementContinuation() const; |
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RenderBlock* blockElementContinuation() const; |
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// This function is a convenience helper for creating an anonymous block that inherits its |
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// style from this RenderBlock. |
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RenderBlock* createAnonymousBlock(bool isFlexibleBox = false) const; |
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RenderBlock* createAnonymousColumnsBlock() const; |
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RenderBlock* createAnonymousColumnSpanBlock() const; |
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RenderBlock* createAnonymousBlockWithSameTypeAs(RenderBlock* otherAnonymousBlock) const; |
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static void appendRunsForObject(int start, int end, RenderObject*, InlineBidiResolver&); |
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static bool requiresLineBox(const InlineIterator&, bool isLineEmpty = true, bool previousLineBrokeCleanly = true); |
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Vector<IntRect>* columnRects() const; |
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int columnGap() const; |
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protected: |
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// These functions are only used internally to manipulate the render tree structure via remove/insert/appendChildNode. |
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// Since they are typically called only to move objects around within anonymous blocks (which only have layers in |
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// the case of column spans), the default for fullRemoveInsert is false rather than true. |
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void moveChildTo(RenderBlock* to, RenderObject* child, bool fullRemoveInsert = false) |
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{ |
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return moveChildTo(to, child, 0, fullRemoveInsert); |
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} |
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void moveChildTo(RenderBlock* to, RenderObject* child, RenderObject* beforeChild, bool fullRemoveInsert = false); |
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void moveAllChildrenTo(RenderBlock* to, bool fullRemoveInsert = false) |
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{ |
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return moveAllChildrenTo(to, 0, fullRemoveInsert); |
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} |
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void moveAllChildrenTo(RenderBlock* to, RenderObject* beforeChild, bool fullRemoveInsert = false) |
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{ |
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return moveChildrenTo(to, firstChild(), 0, beforeChild, fullRemoveInsert); |
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} |
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// Move all of the kids from |startChild| up to but excluding |endChild|. 0 can be passed as the endChild to denote |
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// that all the kids from |startChild| onwards should be added. |
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void moveChildrenTo(RenderBlock* to, RenderObject* startChild, RenderObject* endChild, bool fullRemoveInsert = false) |
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{ |
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return moveChildrenTo(to, startChild, endChild, 0, fullRemoveInsert); |
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} |
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void moveChildrenTo(RenderBlock* to, RenderObject* startChild, RenderObject* endChild, RenderObject* beforeChild, bool fullRemoveInsert = false); |
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|
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int maxTopPosMargin() const { return m_maxMargin ? m_maxMargin->m_topPos : MaxMargin::topPosDefault(this); } |
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int maxTopNegMargin() const { return m_maxMargin ? m_maxMargin->m_topNeg : MaxMargin::topNegDefault(this); } |
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int maxBottomPosMargin() const { return m_maxMargin ? m_maxMargin->m_bottomPos : MaxMargin::bottomPosDefault(this); } |
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int maxBottomNegMargin() const { return m_maxMargin ? m_maxMargin->m_bottomNeg : MaxMargin::bottomNegDefault(this); } |
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void setMaxTopMargins(int pos, int neg); |
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void setMaxBottomMargins(int pos, int neg); |
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void initMaxMarginValues() |
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{ |
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if (m_maxMargin) { |
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m_maxMargin->m_topPos = MaxMargin::topPosDefault(this); |
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m_maxMargin->m_topNeg = MaxMargin::topNegDefault(this); |
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m_maxMargin->m_bottomPos = MaxMargin::bottomPosDefault(this); |
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m_maxMargin->m_bottomNeg = MaxMargin::bottomNegDefault(this); |
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} |
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} |
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virtual void layout(); |
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void layoutPositionedObjects(bool relayoutChildren); |
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virtual void paint(PaintInfo&, int tx, int ty); |
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virtual void paintObject(PaintInfo&, int tx, int ty); |
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int rightRelOffset(int y, int fixedOffset, bool applyTextIndent = true, int* heightRemaining = 0) const; |
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int leftRelOffset(int y, int fixedOffset, bool applyTextIndent = true, int* heightRemaining = 0) const; |
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virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); |
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virtual void calcPrefWidths(); |
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virtual int firstLineBoxBaseline() const; |
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virtual int lastLineBoxBaseline() const; |
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virtual void updateFirstLetter(); |
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virtual void updateHitTestResult(HitTestResult&, const IntPoint&); |
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// Delay update scrollbar until finishDelayRepaint() will be |
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// called. This function is used when a flexbox is laying out its |
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// descendant. If multiple calls are made to startDelayRepaint(), |
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// finishDelayRepaint() will do nothing until finishDelayRepaint() |
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// is called the same number of times. |
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static void startDelayUpdateScrollInfo(); |
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static void finishDelayUpdateScrollInfo(); |
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virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle); |
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virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); |
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virtual bool hasLineIfEmpty() const; |
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bool layoutOnlyPositionedObjects(); |
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#if ENABLE(SVG) |
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protected: |
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// Only used by RenderSVGText, which explicitely overrides RenderBlock::layoutBlock(), do NOT use for anything else. |
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void forceLayoutInlineChildren() |
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{ |
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int repaintTop = 0; |
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int repaintBottom = 0; |
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layoutInlineChildren(true, repaintTop, repaintBottom); |
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} |
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#endif |
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private: |
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virtual RenderObjectChildList* virtualChildren() { return children(); } |
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virtual const RenderObjectChildList* virtualChildren() const { return children(); } |
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virtual const char* renderName() const; |
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virtual bool isRenderBlock() const { return true; } |
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virtual bool isBlockFlow() const { return (!isInline() || isReplaced()) && !isTable(); } |
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virtual bool isInlineBlockOrInlineTable() const { return isInline() && isReplaced(); } |
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void makeChildrenNonInline(RenderObject* insertionPoint = 0); |
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virtual void removeLeftoverAnonymousBlock(RenderBlock* child); |
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virtual void dirtyLinesFromChangedChild(RenderObject* child) { m_lineBoxes.dirtyLinesFromChangedChild(this, child); } |
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void addChildToContinuation(RenderObject* newChild, RenderObject* beforeChild); |
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void addChildIgnoringContinuation(RenderObject* newChild, RenderObject* beforeChild); |
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void addChildToAnonymousColumnBlocks(RenderObject* newChild, RenderObject* beforeChild); |
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virtual void addChildIgnoringAnonymousColumnBlocks(RenderObject* newChild, RenderObject* beforeChild = 0); |
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virtual bool isSelfCollapsingBlock() const; |
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virtual int maxTopMargin(bool positive) const { return positive ? maxTopPosMargin() : maxTopNegMargin(); } |
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virtual int maxBottomMargin(bool positive) const { return positive ? maxBottomPosMargin() : maxBottomNegMargin(); } |
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virtual void repaintOverhangingFloats(bool paintAllDescendants); |
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void layoutBlockChildren(bool relayoutChildren, int& maxFloatBottom); |
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void layoutInlineChildren(bool relayoutChildren, int& repaintTop, int& repaintBottom); |
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virtual void positionListMarker() { } |
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virtual void borderFitAdjust(int& x, int& w) const; // Shrink the box in which the border paints if border-fit is set. |
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virtual void updateBeforeAfterContent(PseudoId); |
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virtual RootInlineBox* createRootInlineBox(); // Subclassed by SVG and Ruby. |
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// Called to lay out the legend for a fieldset. |
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virtual RenderObject* layoutLegend(bool /*relayoutChildren*/) { return 0; } |
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struct FloatWithRect { |
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FloatWithRect(RenderBox* f) |
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: object(f) |
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, rect(IntRect(f->x() - f->marginLeft(), f->y() - f->marginTop(), f->width() + f->marginLeft() + f->marginRight(), f->height() + f->marginTop() + f->marginBottom())) |
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, everHadLayout(f->m_everHadLayout) |
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{ |
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} |
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RenderBox* object; |
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IntRect rect; |
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bool everHadLayout; |
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}; |
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// The following functions' implementations are in RenderBlockLineLayout.cpp. |
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RootInlineBox* determineStartPosition(bool& firstLine, bool& fullLayout, bool& previousLineBrokeCleanly, |
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InlineBidiResolver&, Vector<FloatWithRect>& floats, unsigned& numCleanFloats); |
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RootInlineBox* determineEndPosition(RootInlineBox* startBox, InlineIterator& cleanLineStart, |
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BidiStatus& cleanLineBidiStatus, |
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int& yPos); |
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bool matchedEndLine(const InlineBidiResolver&, const InlineIterator& endLineStart, const BidiStatus& endLineStatus, |
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RootInlineBox*& endLine, int& endYPos, int& repaintBottom, int& repaintTop); |
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305 |
|
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void skipTrailingWhitespace(InlineIterator&, bool isLineEmpty, bool previousLineBrokeCleanly); |
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int skipLeadingWhitespace(InlineBidiResolver&, bool firstLine, bool isLineEmpty, bool previousLineBrokeCleanly); |
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void fitBelowFloats(int widthToFit, bool firstLine, int& availableWidth); |
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InlineIterator findNextLineBreak(InlineBidiResolver&, bool firstLine, bool& isLineEmpty, bool& previousLineBrokeCleanly, bool& hyphenated, EClear* = 0); |
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RootInlineBox* constructLine(unsigned runCount, BidiRun* firstRun, BidiRun* lastRun, bool firstLine, bool lastLine, RenderObject* endObject); |
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InlineFlowBox* createLineBoxes(RenderObject*, bool firstLine); |
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void computeHorizontalPositionsForLine(RootInlineBox*, bool firstLine, BidiRun* firstRun, BidiRun* trailingSpaceRun, bool reachedEnd, GlyphOverflowAndFallbackFontsMap&); |
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void computeVerticalPositionsForLine(RootInlineBox*, BidiRun*, GlyphOverflowAndFallbackFontsMap&); |
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void deleteEllipsisLineBoxes(); |
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void checkLinesForTextOverflow(); |
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void addOverflowFromInlineChildren(); |
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// End of functions defined in RenderBlockLineLayout.cpp. |
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|
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void addOverflowFromBlockChildren(); |
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void addOverflowFromFloats(); |
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|
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void paintFloats(PaintInfo&, int tx, int ty, bool preservePhase = false); |
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void paintContents(PaintInfo&, int tx, int ty); |
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void paintColumnContents(PaintInfo&, int tx, int ty, bool paintFloats = false); |
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void paintColumnRules(PaintInfo&, int tx, int ty); |
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void paintChildren(PaintInfo&, int tx, int ty); |
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void paintEllipsisBoxes(PaintInfo&, int tx, int ty); |
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void paintSelection(PaintInfo&, int tx, int ty); |
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void paintCaret(PaintInfo&, int tx, int ty, CaretType); |
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330 |
|
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void insertFloatingObject(RenderBox*); |
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void removeFloatingObject(RenderBox*); |
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|
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// Called from lineWidth, to position the floats added in the last line. |
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// Returns ture if and only if it has positioned any floats. |
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bool positionNewFloats(); |
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void clearFloats(); |
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int getClearDelta(RenderBox* child, int yPos); |
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|
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virtual bool avoidsFloats() const; |
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341 |
|
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bool hasOverhangingFloats() { return parent() && !hasColumns() && floatBottom() > height(); } |
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void addIntrudingFloats(RenderBlock* prev, int xoffset, int yoffset); |
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int addOverhangingFloats(RenderBlock* child, int xoffset, int yoffset, bool makeChildPaintOtherFloats); |
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|
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int nextFloatBottomBelow(int) const; |
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int floatBottom() const; |
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inline int leftBottom(); |
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inline int rightBottom(); |
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|
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int rightOffset() const; |
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int leftOffset() const; |
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virtual bool hitTestColumns(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); |
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virtual bool hitTestContents(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); |
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|
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virtual bool isPointInOverflowControl(HitTestResult&, int x, int y, int tx, int ty); |
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|
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void calcInlinePrefWidths(); |
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void calcBlockPrefWidths(); |
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|
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// Obtains the nearest enclosing block (including this block) that contributes a first-line style to our inline |
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// children. |
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virtual RenderBlock* firstLineBlock() const; |
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|
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virtual IntRect rectWithOutlineForRepaint(RenderBoxModelObject* repaintContainer, int outlineWidth); |
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virtual RenderStyle* outlineStyleForRepaint() const; |
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|
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virtual RenderObject* hoverAncestor() const; |
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virtual void updateDragState(bool dragOn); |
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virtual void childBecameNonInline(RenderObject* child); |
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|
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virtual IntRect selectionRectForRepaint(RenderBoxModelObject* repaintContainer, bool /*clipToVisibleContent*/) |
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{ |
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return selectionGapRectsForRepaint(repaintContainer); |
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} |
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virtual bool shouldPaintSelectionGaps() const; |
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bool isSelectionRoot() const; |
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GapRects fillSelectionGaps(RenderBlock* rootBlock, int blockX, int blockY, int tx, int ty, |
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int& lastTop, int& lastLeft, int& lastRight, const PaintInfo* = 0); |
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GapRects fillInlineSelectionGaps(RenderBlock* rootBlock, int blockX, int blockY, int tx, int ty, |
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int& lastTop, int& lastLeft, int& lastRight, const PaintInfo*); |
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GapRects fillBlockSelectionGaps(RenderBlock* rootBlock, int blockX, int blockY, int tx, int ty, |
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int& lastTop, int& lastLeft, int& lastRight, const PaintInfo*); |
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IntRect fillVerticalSelectionGap(int lastTop, int lastLeft, int lastRight, int bottomY, RenderBlock* rootBlock, |
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int blockX, int blockY, const PaintInfo*); |
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int leftSelectionOffset(RenderBlock* rootBlock, int y); |
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int rightSelectionOffset(RenderBlock* rootBlock, int y); |
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388 |
|
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virtual void absoluteRects(Vector<IntRect>&, int tx, int ty); |
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virtual void absoluteQuads(Vector<FloatQuad>&); |
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391 |
|
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int desiredColumnWidth() const; |
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unsigned desiredColumnCount() const; |
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void setDesiredColumnCountAndWidth(int count, int width); |
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|
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void paintContinuationOutlines(PaintInfo&, int tx, int ty); |
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|
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virtual IntRect localCaretRect(InlineBox*, int caretOffset, int* extraWidthToEndOfLine = 0); |
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399 |
|
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virtual void addFocusRingRects(Vector<IntRect>&, int tx, int ty); |
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401 |
|
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void adjustPointToColumnContents(IntPoint&) const; |
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void adjustForBorderFit(int x, int& left, int& right) const; // Helper function for borderFitAdjust |
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404 |
|
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|
405 |
void markLinesDirtyInVerticalRange(int top, int bottom, RootInlineBox* highest = 0); |
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|
406 |
|
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void newLine(EClear); |
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|
408 |
|
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Position positionForBox(InlineBox*, bool start = true) const; |
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Position positionForRenderer(RenderObject*, bool start = true) const; |
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VisiblePosition positionForPointWithInlineChildren(const IntPoint&); |
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412 |
|
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// Adjust tx and ty from painting offsets to the local coords of this renderer |
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void offsetForContents(int& tx, int& ty) const; |
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|
415 |
|
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void calcColumnWidth(); |
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int layoutColumns(int endOfContent = -1, int requestedColumnHeight = -1); |
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int visibleTopOfHighestFloatExtendingBelow(int bottom, int maxHeight) const; |
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void makeChildrenAnonymousColumnBlocks(RenderObject* beforeChild, RenderBlock* newBlockBox, RenderObject* newChild); |
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|
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bool expandsToEncloseOverhangingFloats() const; |
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422 |
|
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void updateScrollInfoAfterLayout(); |
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|
424 |
|
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RenderObject* splitAnonymousBlocksAroundChild(RenderObject* beforeChild); |
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void splitBlocks(RenderBlock* fromBlock, RenderBlock* toBlock, RenderBlock* middleBlock, |
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|
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RenderObject* beforeChild, RenderBoxModelObject* oldCont); |
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|
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void splitFlow(RenderObject* beforeChild, RenderBlock* newBlockBox, |
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|
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RenderObject* newChild, RenderBoxModelObject* oldCont); |
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Revision: 201037
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RenderBlock* clone() const; |
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RenderBlock* continuationBefore(RenderObject* beforeChild); |
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Revision: 201037
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RenderBlock* containingColumnsBlock(bool allowAnonymousColumnBlock = true); |
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Revision: 201037
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RenderBlock* columnsBlockForSpanningElement(RenderObject* newChild); |
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Revision: 201037
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|
434 |
|
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Revision: 201037
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struct FloatingObject : Noncopyable { |
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enum Type { |
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FloatLeft, |
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FloatRight |
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}; |
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|
440 |
|
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FloatingObject(Type type) |
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: m_renderer(0) |
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Revision: 201037
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, m_top(0) |
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, m_bottom(0) |
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, m_left(0) |
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, m_width(0) |
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, m_type(type) |
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, m_shouldPaint(true) |
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Revision: 201037
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, m_isDescendant(false) |
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{ |
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451 |
} |
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|
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Type type() { return static_cast<Type>(m_type); } |
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|
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|
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Revision: 201037
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RenderBox* m_renderer; |
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Revision: 201037
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|
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int m_top; |
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Revision: 201037
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|
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int m_bottom; |
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Revision: 201037
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int m_left; |
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Revision: 201037
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|
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int m_width; |
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Revision: 201037
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|
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unsigned m_type : 1; // Type (left or right aligned) |
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Revision: 201037
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|
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bool m_shouldPaint : 1; |
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Revision: 201037
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|
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bool m_isDescendant : 1; |
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Revision: 201037
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|
463 |
}; |
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|
464 |
|
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Revision: 201037
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|
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class MarginInfo { |
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Revision: 201037
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|
466 |
// Collapsing flags for whether we can collapse our margins with our children's margins. |
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Revision: 201037
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|
467 |
bool m_canCollapseWithChildren : 1; |
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Revision: 201037
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|
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bool m_canCollapseTopWithChildren : 1; |
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Revision: 201037
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|
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bool m_canCollapseBottomWithChildren : 1; |
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|
470 |
|
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Revision: 201037
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|
471 |
// Whether or not we are a quirky container, i.e., do we collapse away top and bottom |
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Revision: 201037
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|
472 |
// margins in our container. Table cells and the body are the common examples. We |
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Revision: 201037
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|
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// also have a custom style property for Safari RSS to deal with TypePad blog articles. |
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Revision: 201037
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|
474 |
bool m_quirkContainer : 1; |
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Revision: 201037
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|
475 |
|
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Revision: 201037
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|
476 |
// This flag tracks whether we are still looking at child margins that can all collapse together at the beginning of a block. |
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Revision: 201037
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|
477 |
// They may or may not collapse with the top margin of the block (|m_canCollapseTopWithChildren| tells us that), but they will |
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Revision: 201037
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|
478 |
// always be collapsing with one another. This variable can remain set to true through multiple iterations |
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Revision: 201037
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|
479 |
// as long as we keep encountering self-collapsing blocks. |
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Revision: 201037
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|
480 |
bool m_atTopOfBlock : 1; |
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Revision: 201037
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|
481 |
|
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Revision: 201037
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|
482 |
// This flag is set when we know we're examining bottom margins and we know we're at the bottom of the block. |
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Revision: 201037
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|
483 |
bool m_atBottomOfBlock : 1; |
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Revision: 201037
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|
484 |
|
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Revision: 201037
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|
485 |
// These variables are used to detect quirky margins that we need to collapse away (in table cells |
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Revision: 201037
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|
486 |
// and in the body element). |
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Revision: 201037
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|
487 |
bool m_topQuirk : 1; |
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Revision: 201037
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|
488 |
bool m_bottomQuirk : 1; |
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Revision: 201037
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|
489 |
bool m_determinedTopQuirk : 1; |
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Revision: 201037
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|
490 |
|
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Revision: 201037
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|
491 |
// These flags track the previous maximal positive and negative margins. |
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Revision: 201037
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|
492 |
int m_posMargin; |
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Revision: 201037
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|
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int m_negMargin; |
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Revision: 201037
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|
494 |
|
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Revision: 201037
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|
495 |
public: |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff
changeset
|
496 |
MarginInfo(RenderBlock* b, int top, int bottom); |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
497 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
void setAtTopOfBlock(bool b) { m_atTopOfBlock = b; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
499 |
void setAtBottomOfBlock(bool b) { m_atBottomOfBlock = b; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
500 |
void clearMargin() { m_posMargin = m_negMargin = 0; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
501 |
void setTopQuirk(bool b) { m_topQuirk = b; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
void setBottomQuirk(bool b) { m_bottomQuirk = b; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
503 |
void setDeterminedTopQuirk(bool b) { m_determinedTopQuirk = b; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
void setPosMargin(int p) { m_posMargin = p; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
void setNegMargin(int n) { m_negMargin = n; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
void setPosMarginIfLarger(int p) { if (p > m_posMargin) m_posMargin = p; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
void setNegMarginIfLarger(int n) { if (n > m_negMargin) m_negMargin = n; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
void setMargin(int p, int n) { m_posMargin = p; m_negMargin = n; } |
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Revision: 201037
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parents:
diff
changeset
|
510 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
bool atTopOfBlock() const { return m_atTopOfBlock; } |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
bool canCollapseWithTop() const { return m_atTopOfBlock && m_canCollapseTopWithChildren; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
bool canCollapseWithBottom() const { return m_atBottomOfBlock && m_canCollapseBottomWithChildren; } |
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Revision: 201037
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parents:
diff
changeset
|
514 |
bool canCollapseTopWithChildren() const { return m_canCollapseTopWithChildren; } |
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Revision: 201037
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parents:
diff
changeset
|
515 |
bool canCollapseBottomWithChildren() const { return m_canCollapseBottomWithChildren; } |
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Revision: 201037
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parents:
diff
changeset
|
516 |
bool quirkContainer() const { return m_quirkContainer; } |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
517 |
bool determinedTopQuirk() const { return m_determinedTopQuirk; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
bool topQuirk() const { return m_topQuirk; } |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
519 |
bool bottomQuirk() const { return m_bottomQuirk; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
int posMargin() const { return m_posMargin; } |
4f2f89ce4247
Revision: 201037
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parents:
diff
changeset
|
521 |
int negMargin() const { return m_negMargin; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
int margin() const { return m_posMargin - m_negMargin; } |
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Revision: 201037
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parents:
diff
changeset
|
523 |
}; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
void layoutBlockChild(RenderBox* child, MarginInfo&, int& previousFloatBottom, int& maxFloatBottom); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
void adjustPositionedBlock(RenderBox* child, const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
void adjustFloatingBlock(const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
bool handleSpecialChild(RenderBox* child, const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
bool handleFloatingChild(RenderBox* child, const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
bool handlePositionedChild(RenderBox* child, const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
531 |
bool handleRunInChild(RenderBox* child); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
int collapseMargins(RenderBox* child, MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
int clearFloatsIfNeeded(RenderBox* child, MarginInfo&, int oldTopPosMargin, int oldTopNegMargin, int yPos); |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
int estimateVerticalPosition(RenderBox* child, const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
void determineHorizontalPosition(RenderBox* child); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
void handleBottomOfBlock(int top, int bottom, MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
void setCollapsedBottomMargin(const MarginInfo&); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
// End helper functions and structs used by layoutBlockChildren. |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
typedef PositionedObjectsListHashSet::const_iterator Iterator; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
DeprecatedPtrList<FloatingObject>* m_floatingObjects; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
PositionedObjectsListHashSet* m_positionedObjects; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
// An inline can be split with blocks occurring in between the inline content. |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
// When this occurs we need a pointer to our next object. We can basically be |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
// split into a sequence of inlines and blocks. The continuation will either be |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
// an anonymous block (that houses other blocks) or it will be an inline flow. |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
549 |
RenderBoxModelObject* m_continuation; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
550 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
// Allocated only when some of these fields have non-default values |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
struct MaxMargin : Noncopyable { |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
553 |
MaxMargin(const RenderBlock* o) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
: m_topPos(topPosDefault(o)) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
, m_topNeg(topNegDefault(o)) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
, m_bottomPos(bottomPosDefault(o)) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
, m_bottomNeg(bottomNegDefault(o)) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
{ |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
} |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
561 |
static int topPosDefault(const RenderBlock* o) { return o->marginTop() > 0 ? o->marginTop() : 0; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
562 |
static int topNegDefault(const RenderBlock* o) { return o->marginTop() < 0 ? -o->marginTop() : 0; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
563 |
static int bottomPosDefault(const RenderBlock* o) { return o->marginBottom() > 0 ? o->marginBottom() : 0; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
564 |
static int bottomNegDefault(const RenderBlock* o) { return o->marginBottom() < 0 ? -o->marginBottom() : 0; } |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
565 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
566 |
int m_topPos; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
567 |
int m_topNeg; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
568 |
int m_bottomPos; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
569 |
int m_bottomNeg; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
570 |
}; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
571 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
572 |
MaxMargin* m_maxMargin; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
573 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
574 |
RenderObjectChildList m_children; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
575 |
RenderLineBoxList m_lineBoxes; // All of the root line boxes created for this block flow. For example, <div>Hello<br>world.</div> will have two total lines for the <div>. |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
576 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
577 |
mutable int m_lineHeight; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
578 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
579 |
// RenderRubyBase objects need to be able to split and merge, moving their children around |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
580 |
// (calling moveChildTo, moveAllChildrenTo, and makeChildrenNonInline). |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
581 |
friend class RenderRubyBase; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
582 |
}; |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
583 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
584 |
inline RenderBlock* toRenderBlock(RenderObject* object) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
585 |
{ |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
586 |
ASSERT(!object || object->isRenderBlock()); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
587 |
return static_cast<RenderBlock*>(object); |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
588 |
} |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
589 |
|
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
590 |
inline const RenderBlock* toRenderBlock(const RenderObject* object) |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
591 |
{ |
4f2f89ce4247
Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
592 |
ASSERT(!object || object->isRenderBlock()); |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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return static_cast<const RenderBlock*>(object); |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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} |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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// This will catch anyone doing an unnecessary cast. |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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void toRenderBlock(const RenderBlock*); |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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} // namespace WebCore |
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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Revision: 201037
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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#endif // RenderBlock_h |