1 /* 2 * Copyright (C) 2003, 2006, 2007, 2008 Apple Inc. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #ifndef RootInlineBox_h 22 #define RootInlineBox_h 23 24 #include "BidiContext.h" 25 #include "InlineFlowBox.h" 26 27 namespace WebCore { 28 29 class EllipsisBox; 30 class HitTestResult; 31 32 struct BidiStatus; 33 struct GapRects; 34 35 class RootInlineBox : public InlineFlowBox { 36 public: 37 RootInlineBox(RenderObject* obj) 38 : InlineFlowBox(obj) 39 , m_lineBreakObj(0) 40 , m_lineBreakPos(0) 41 , m_lineTop(0) 42 , m_lineBottom(0) 43 { 44 } 45 46 virtual void destroy(RenderArena*); 47 48 virtual bool isRootInlineBox() const { return true; } 49 50 void detachEllipsisBox(RenderArena*); 51 52 RootInlineBox* nextRootBox() const { return static_cast<RootInlineBox*>(m_nextLine); } 53 RootInlineBox* prevRootBox() const { return static_cast<RootInlineBox*>(m_prevLine); } 54 55 virtual void adjustPosition(int dx, int dy); 56 57 int lineTop() const { return m_lineTop; } 58 int lineBottom() const { return m_lineBottom; } 59 60 int selectionTop() const; 61 int selectionBottom() const { return lineBottom(); } 62 int selectionHeight() const { return max(0, selectionBottom() - selectionTop()); } 63 64 virtual int verticallyAlignBoxes(int heightOfBlock); 65 void setLineTopBottomPositions(int top, int bottom); 66 67 virtual RenderLineBoxList* rendererLineBoxes() const; 68 69 #if ENABLE(SVG) 70 virtual void computePerCharacterLayoutInformation() { } 71 #endif 72 73 RenderObject* lineBreakObj() const { return m_lineBreakObj; } 74 BidiStatus lineBreakBidiStatus() const; 75 void setLineBreakInfo(RenderObject*, unsigned breakPos, const BidiStatus&); 76 77 unsigned lineBreakPos() const { return m_lineBreakPos; } 78 void setLineBreakPos(unsigned p) { m_lineBreakPos = p; } 79 80 int blockHeight() const { return m_blockHeight; } 81 void setBlockHeight(int h) { m_blockHeight = h; } 82 83 bool endsWithBreak() const { return m_endsWithBreak; } 84 void setEndsWithBreak(bool b) { m_endsWithBreak = b; } 85 86 void childRemoved(InlineBox* box); 87 88 bool canAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth); 89 void placeEllipsis(const AtomicString& ellipsisStr, bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, InlineBox* markupBox = 0); 90 virtual int placeEllipsisBox(bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, bool& foundBox); 91 92 EllipsisBox* ellipsisBox() const; 93 94 void paintEllipsisBox(RenderObject::PaintInfo&, int tx, int ty) const; 95 bool hitTestEllipsisBox(HitTestResult&, int x, int y, int tx, int ty, HitTestAction, bool); 96 97 virtual void clearTruncation(); 98 99 #if PLATFORM(MAC) 100 void addHighlightOverflow(); 101 void paintCustomHighlight(RenderObject::PaintInfo&, int tx, int ty, const AtomicString& highlightType); 102 #endif 103 104 virtual void paint(RenderObject::PaintInfo&, int tx, int ty); 105 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int); 106 107 bool hasSelectedChildren() const { return m_hasSelectedChildren; } 108 void setHasSelectedChildren(bool); 109 110 virtual RenderObject::SelectionState selectionState(); 111 InlineBox* firstSelectedBox(); 112 InlineBox* lastSelectedBox(); 113 114 GapRects fillLineSelectionGap(int selTop, int selHeight, RenderBlock* rootBlock, int blockX, int blockY, 115 int tx, int ty, const RenderObject::PaintInfo*); 116 117 RenderBlock* block() const; 118 119 InlineBox* closestLeafChildForXPos(int x, bool onlyEditableLeaves = false); 120 121 Vector<RenderBox*>& floats() 122 { 123 ASSERT(!isDirty()); 124 if (!m_floats) 125 m_floats.set(new Vector<RenderBox*>()); 126 return *m_floats; 127 } 128 129 Vector<RenderBox*>* floatsPtr() { ASSERT(!isDirty()); return m_floats.get(); } 130 131 virtual void extractLineBoxFromRenderObject(); 132 virtual void attachLineBoxToRenderObject(); 133 virtual void removeLineBoxFromRenderObject(); 134 135 protected: 136 // Where this line ended. The exact object and the position within that object are stored so that 137 // we can create an InlineIterator beginning just after the end of this line. 138 RenderObject* m_lineBreakObj; 139 unsigned m_lineBreakPos; 140 RefPtr<BidiContext> m_lineBreakContext; 141 142 int m_lineTop; 143 int m_lineBottom; 144 145 // Floats hanging off the line are pushed into this vector during layout. It is only 146 // good for as long as the line has not been marked dirty. 147 OwnPtr<Vector<RenderBox*> > m_floats; 148 149 // The height of the block at the end of this line. This is where the next line starts. 150 int m_blockHeight; 151 152 WTF::Unicode::Direction m_lineBreakBidiStatusEor : 5; 153 WTF::Unicode::Direction m_lineBreakBidiStatusLastStrong : 5; 154 WTF::Unicode::Direction m_lineBreakBidiStatusLast : 5; 155 }; 156 157 inline void RootInlineBox::setLineTopBottomPositions(int top, int bottom) 158 { 159 m_lineTop = top; 160 m_lineBottom = bottom; 161 } 162 163 } // namespace WebCore 164 165 #endif // RootInlineBox_h 166
