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) 2003, 2004, 2005, 2006, 2007 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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*/ |
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#ifndef InlineFlowBox_h |
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#define InlineFlowBox_h |
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#include "InlineBox.h" |
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#include "RenderOverflow.h" |
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namespace WebCore { |
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class HitTestRequest; |
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class HitTestResult; |
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class InlineTextBox; |
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class RenderLineBoxList; |
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typedef HashMap<const InlineTextBox*, pair<Vector<const SimpleFontData*>, GlyphOverflow> > GlyphOverflowAndFallbackFontsMap; |
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class InlineFlowBox : public InlineBox { |
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public: |
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InlineFlowBox(RenderObject* obj) |
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: InlineBox(obj) |
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, m_firstChild(0) |
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, m_lastChild(0) |
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, m_prevLineBox(0) |
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, m_nextLineBox(0) |
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, m_includeLeftEdge(false) |
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, m_includeRightEdge(false) |
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#ifndef NDEBUG |
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, m_hasBadChildList(false) |
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#endif |
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{ |
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// Internet Explorer and Firefox always create a marker for list items, even when the list-style-type is none. We do not make a marker |
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// in the list-style-type: none case, since it is wasteful to do so. However, in order to match other browsers we have to pretend like |
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// an invisible marker exists. The side effect of having an invisible marker is that the quirks mode behavior of shrinking lines with no |
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// text children must not apply. This change also means that gaps will exist between image bullet list items. Even when the list bullet |
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// is an image, the line is still considered to be immune from the quirk. |
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m_hasTextChildren = obj->style()->display() == LIST_ITEM; |
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} |
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#ifndef NDEBUG |
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virtual ~InlineFlowBox(); |
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#endif |
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InlineFlowBox* prevLineBox() const { return m_prevLineBox; } |
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InlineFlowBox* nextLineBox() const { return m_nextLineBox; } |
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void setNextLineBox(InlineFlowBox* n) { m_nextLineBox = n; } |
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void setPreviousLineBox(InlineFlowBox* p) { m_prevLineBox = p; } |
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InlineBox* firstChild() const { checkConsistency(); return m_firstChild; } |
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InlineBox* lastChild() const { checkConsistency(); return m_lastChild; } |
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virtual bool isLeaf() const { return false; } |
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InlineBox* firstLeafChild() const; |
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InlineBox* lastLeafChild() const; |
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virtual void setConstructed() |
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{ |
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InlineBox::setConstructed(); |
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if (firstChild()) |
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firstChild()->setConstructed(); |
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} |
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void addToLine(InlineBox* child); |
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virtual void deleteLine(RenderArena*); |
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virtual void extractLine(); |
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virtual void attachLine(); |
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virtual void adjustPosition(int dx, int dy); |
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virtual void extractLineBoxFromRenderObject(); |
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virtual void attachLineBoxToRenderObject(); |
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virtual void removeLineBoxFromRenderObject(); |
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virtual void clearTruncation(); |
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virtual void paintBoxDecorations(PaintInfo&, int tx, int ty); |
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virtual void paintMask(PaintInfo&, int tx, int ty); |
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void paintFillLayers(const PaintInfo&, const Color&, const FillLayer*, int tx, int ty, int w, int h, CompositeOperator = CompositeSourceOver); |
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void paintFillLayer(const PaintInfo&, const Color&, const FillLayer*, int tx, int ty, int w, int h, CompositeOperator = CompositeSourceOver); |
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void paintBoxShadow(GraphicsContext*, RenderStyle*, ShadowStyle, int tx, int ty, int w, int h); |
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virtual void paintTextDecorations(PaintInfo&, int tx, int ty, bool paintedChildren = false); |
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virtual void paint(PaintInfo&, int tx, int ty); |
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virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty); |
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virtual RenderLineBoxList* rendererLineBoxes() const; |
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int marginBorderPaddingLeft() const { return marginLeft() + borderLeft() + paddingLeft(); } |
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int marginBorderPaddingRight() const { return marginRight() + borderRight() + paddingRight(); } |
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int marginLeft() const { if (includeLeftEdge()) return boxModelObject()->marginLeft(); return 0; } |
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int marginRight() const { if (includeRightEdge()) return boxModelObject()->marginRight(); return 0; } |
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int borderLeft() const { if (includeLeftEdge()) return renderer()->style()->borderLeftWidth(); return 0; } |
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int borderRight() const { if (includeRightEdge()) return renderer()->style()->borderRightWidth(); return 0; } |
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int borderTop() const { return renderer()->style()->borderTopWidth(); } |
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int borderBottom() const { return renderer()->style()->borderBottomWidth(); } |
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int paddingLeft() const { if (includeLeftEdge()) return boxModelObject()->paddingLeft(); return 0; } |
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int paddingRight() const { if (includeRightEdge()) return boxModelObject()->paddingRight(); return 0; } |
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int paddingTop() const { return boxModelObject()->paddingTop(); } |
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int paddingBottom() const { return boxModelObject()->paddingBottom(); } |
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bool includeLeftEdge() const { return m_includeLeftEdge; } |
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bool includeRightEdge() const { return m_includeRightEdge; } |
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void setEdges(bool includeLeft, bool includeRight) |
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{ |
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m_includeLeftEdge = includeLeft; |
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m_includeRightEdge = includeRight; |
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} |
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// Helper functions used during line construction and placement. |
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void determineSpacingForFlowBoxes(bool lastLine, RenderObject* endObject); |
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int getFlowSpacingWidth(); |
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bool onEndChain(RenderObject* endObject); |
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int placeBoxesHorizontally(int x, bool& needsWordSpacing, GlyphOverflowAndFallbackFontsMap&); |
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void computeLogicalBoxHeights(int& maxPositionTop, int& maxPositionBottom, |
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int& maxAscent, int& maxDescent, bool strictMode, GlyphOverflowAndFallbackFontsMap&); |
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void adjustMaxAscentAndDescent(int& maxAscent, int& maxDescent, |
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int maxPositionTop, int maxPositionBottom); |
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void placeBoxesVertically(int y, int maxHeight, int maxAscent, bool strictMode, int& lineTop, int& lineBottom); |
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void computeVerticalOverflow(int lineTop, int lineBottom, bool strictMode, GlyphOverflowAndFallbackFontsMap&); |
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void removeChild(InlineBox* child); |
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virtual RenderObject::SelectionState selectionState(); |
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virtual bool canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth); |
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virtual int placeEllipsisBox(bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, bool&); |
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bool hasTextChildren() const { return m_hasTextChildren; } |
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void checkConsistency() const; |
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void setHasBadChildList(); |
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int topVisibleOverflow() const { return std::min(topLayoutOverflow(), topVisualOverflow()); } |
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int bottomVisibleOverflow() const { return std::max(bottomLayoutOverflow(), bottomVisualOverflow()); } |
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int leftVisibleOverflow() const { return std::min(leftLayoutOverflow(), leftVisualOverflow()); } |
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int rightVisibleOverflow() const { return std::max(rightLayoutOverflow(), rightVisualOverflow()); } |
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IntRect visibleOverflowRect() const { return m_overflow ? m_overflow->visibleOverflowRect() : IntRect(m_x, m_y, m_width, height()); } |
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int topLayoutOverflow() const { return m_overflow ? m_overflow->topLayoutOverflow() : m_y; } |
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int bottomLayoutOverflow() const { return m_overflow ? m_overflow->bottomLayoutOverflow() : m_y + height(); } |
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int leftLayoutOverflow() const { return m_overflow ? m_overflow->leftLayoutOverflow() : m_x; } |
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int rightLayoutOverflow() const { return m_overflow ? m_overflow->rightLayoutOverflow() : m_x + m_width; } |
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IntRect layoutOverflowRect() const { return m_overflow ? m_overflow->layoutOverflowRect() : IntRect(m_x, m_y, m_width, height()); } |
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int topVisualOverflow() const { return m_overflow ? m_overflow->topVisualOverflow() : m_y; } |
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int bottomVisualOverflow() const { return m_overflow ? m_overflow->bottomVisualOverflow() : m_y + height(); } |
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int leftVisualOverflow() const { return m_overflow ? m_overflow->leftVisualOverflow() : m_x; } |
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int rightVisualOverflow() const { return m_overflow ? m_overflow->rightVisualOverflow() : m_x + m_width; } |
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IntRect visualOverflowRect() const { return m_overflow ? m_overflow->visualOverflowRect() : IntRect(m_x, m_y, m_width, height()); } |
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void setHorizontalOverflowPositions(int leftLayoutOverflow, int rightLayoutOverflow, int leftVisualOverflow, int rightVisualOverflow); |
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void setVerticalOverflowPositions(int topLayoutOverflow, int bottomLayoutOverflow, int topVisualOverflow, int bottomVisualOverflow, int boxHeight); |
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protected: |
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OwnPtr<RenderOverflow> m_overflow; |
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virtual bool isInlineFlowBox() const { return true; } |
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InlineBox* m_firstChild; |
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InlineBox* m_lastChild; |
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InlineFlowBox* m_prevLineBox; // The previous box that also uses our RenderObject |
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InlineFlowBox* m_nextLineBox; // The next box that also uses our RenderObject |
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bool m_includeLeftEdge : 1; |
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bool m_includeRightEdge : 1; |
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bool m_hasTextChildren : 1; |
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#ifndef NDEBUG |
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bool m_hasBadChildList; |
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#endif |
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}; |
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inline void InlineFlowBox::setHorizontalOverflowPositions(int leftLayoutOverflow, int rightLayoutOverflow, int leftVisualOverflow, int rightVisualOverflow) |
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{ |
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if (!m_overflow) { |
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if (leftLayoutOverflow == m_x && rightLayoutOverflow == m_x + m_width && leftVisualOverflow == m_x && rightVisualOverflow == m_x + m_width) |
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return; |
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m_overflow = adoptPtr(new RenderOverflow(IntRect(m_x, m_y, m_width, m_renderer->style(m_firstLine)->font().height()))); |
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} |
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m_overflow->setLeftLayoutOverflow(leftLayoutOverflow); |
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m_overflow->setRightLayoutOverflow(rightLayoutOverflow); |
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m_overflow->setLeftVisualOverflow(leftVisualOverflow); |
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m_overflow->setRightVisualOverflow(rightVisualOverflow); |
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} |
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inline void InlineFlowBox::setVerticalOverflowPositions(int topLayoutOverflow, int bottomLayoutOverflow, int topVisualOverflow, int bottomVisualOverflow, int boxHeight) |
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{ |
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if (!m_overflow) { |
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if (topLayoutOverflow == m_y && bottomLayoutOverflow == m_y + boxHeight && topVisualOverflow == m_y && bottomVisualOverflow == m_y + boxHeight) |
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return; |
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m_overflow = adoptPtr(new RenderOverflow(IntRect(m_x, m_y, m_width, boxHeight))); |
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} |
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m_overflow->setTopLayoutOverflow(topLayoutOverflow); |
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m_overflow->setBottomLayoutOverflow(bottomLayoutOverflow); |
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m_overflow->setTopVisualOverflow(topVisualOverflow); |
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m_overflow->setBottomVisualOverflow(bottomVisualOverflow); |
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} |
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#ifdef NDEBUG |
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inline void InlineFlowBox::checkConsistency() const |
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{ |
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} |
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#endif |
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inline void InlineFlowBox::setHasBadChildList() |
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{ |
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#ifndef NDEBUG |
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m_hasBadChildList = true; |
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#endif |
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} |
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} // namespace WebCore |
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#ifndef NDEBUG |
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// Outside the WebCore namespace for ease of invocation from gdb. |
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void showTree(const WebCore::InlineFlowBox*); |
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#endif |
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#endif // InlineFlowBox_h |