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31 #ifndef RenderedPosition_h
32 #define RenderedPosition_h
34 #include "core/editing/TextAffinity.h"
35 #include "core/rendering/InlineBox.h"
43 class VisiblePosition;
44 struct CompositedSelectionBound;
46 class RenderedPosition {
49 explicit RenderedPosition(const VisiblePosition&);
50 explicit RenderedPosition(const Position&, EAffinity);
51 bool isEquivalent(const RenderedPosition&) const;
53 bool isNull() const { return !m_renderer; }
54 RootInlineBox* rootBox() { return m_inlineBox ? &m_inlineBox->root() : 0; }
56 unsigned char bidiLevelOnLeft() const;
57 unsigned char bidiLevelOnRight() const;
58 RenderedPosition leftBoundaryOfBidiRun(unsigned char bidiLevelOfRun);
59 RenderedPosition rightBoundaryOfBidiRun(unsigned char bidiLevelOfRun);
61 enum ShouldMatchBidiLevel { MatchBidiLevel, IgnoreBidiLevel };
62 bool atLeftBoundaryOfBidiRun() const { return atLeftBoundaryOfBidiRun(IgnoreBidiLevel, 0); }
63 bool atRightBoundaryOfBidiRun() const { return atRightBoundaryOfBidiRun(IgnoreBidiLevel, 0); }
64 // The following two functions return true only if the current position is at the end of the bidi run
65 // of the specified bidi embedding level.
66 bool atLeftBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return atLeftBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); }
67 bool atRightBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return atRightBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); }
69 Position positionAtLeftBoundaryOfBiDiRun() const;
70 Position positionAtRightBoundaryOfBiDiRun() const;
72 IntRect absoluteRect(LayoutUnit* extraWidthToEndOfLine = 0) const;
73 void positionInGraphicsLayerBacking(CompositedSelectionBound&) const;
76 bool operator==(const RenderedPosition&) const { return false; }
77 explicit RenderedPosition(RenderObject*, InlineBox*, int offset);
79 InlineBox* prevLeafChild() const;
80 InlineBox* nextLeafChild() const;
81 bool atLeftmostOffsetInBox() const { return m_inlineBox && m_offset == m_inlineBox->caretLeftmostOffset(); }
82 bool atRightmostOffsetInBox() const { return m_inlineBox && m_offset == m_inlineBox->caretRightmostOffset(); }
83 bool atLeftBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOfRun) const;
84 bool atRightBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOfRun) const;
86 RenderObject* m_renderer;
87 InlineBox* m_inlineBox;
90 static InlineBox* uncachedInlineBox() { return reinterpret_cast<InlineBox*>(1); }
91 // Needs to be different form 0 so pick 1 because it's also on the null page.
93 mutable InlineBox* m_prevLeafChild;
94 mutable InlineBox* m_nextLeafChild;
97 inline RenderedPosition::RenderedPosition()
99 , m_inlineBox(nullptr)
101 , m_prevLeafChild(uncachedInlineBox())
102 , m_nextLeafChild(uncachedInlineBox())
106 inline RenderedPosition::RenderedPosition(RenderObject* renderer, InlineBox* box, int offset)
107 : m_renderer(renderer)
110 , m_prevLeafChild(uncachedInlineBox())
111 , m_nextLeafChild(uncachedInlineBox())
115 bool renderObjectContainsPosition(RenderObject*, const Position&);
119 #endif // RenderedPosition_h