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31 #ifndef RenderedPosition_h
32 #define RenderedPosition_h
34 #include "InlineBox.h"
35 #include "LayoutTypes.h"
36 #include "TextAffinity.h"
42 class VisiblePosition;
44 class RenderedPosition {
47 explicit RenderedPosition(const VisiblePosition&);
48 explicit RenderedPosition(const Position&, EAffinity);
49 bool isEquivalent(const RenderedPosition&) const;
51 bool isNull() const { return !m_renderer; }
52 RootInlineBox* rootBox() { return m_inlineBox ? m_inlineBox->root() : 0; }
54 unsigned char bidiLevelOnLeft() const;
55 unsigned char bidiLevelOnRight() const;
56 RenderedPosition leftBoundaryOfBidiRun(unsigned char bidiLevelOfRun);
57 RenderedPosition rightBoundaryOfBidiRun(unsigned char bidiLevelOfRun);
59 enum ShouldMatchBidiLevel { MatchBidiLevel, IgnoreBidiLevel };
60 bool atLeftBoundaryOfBidiRun() const { return atLeftBoundaryOfBidiRun(IgnoreBidiLevel, 0); }
61 bool atRightBoundaryOfBidiRun() const { return atRightBoundaryOfBidiRun(IgnoreBidiLevel, 0); }
62 // The following two functions return true only if the current position is at the end of the bidi run
63 // of the specified bidi embedding level.
64 bool atLeftBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return atLeftBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); }
65 bool atRightBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return atRightBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); }
67 Position positionAtLeftBoundaryOfBiDiRun() const;
68 Position positionAtRightBoundaryOfBiDiRun() const;
70 IntRect absoluteRect(LayoutUnit* extraWidthToEndOfLine = 0) const;
73 bool operator==(const RenderedPosition&) const { return false; }
74 explicit RenderedPosition(RenderObject*, InlineBox*, int offset);
76 InlineBox* prevLeafChild() const;
77 InlineBox* nextLeafChild() const;
78 bool atLeftmostOffsetInBox() const { return m_inlineBox && m_offset == m_inlineBox->caretLeftmostOffset(); }
79 bool atRightmostOffsetInBox() const { return m_inlineBox && m_offset == m_inlineBox->caretRightmostOffset(); }
80 bool atLeftBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOfRun) const;
81 bool atRightBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOfRun) const;
83 RenderObject* m_renderer;
84 InlineBox* m_inlineBox;
87 static InlineBox* uncachedInlineBox() { return reinterpret_cast<InlineBox*>(1); }
88 // Needs to be different form 0 so pick 1 because it's also on the null page.
90 mutable InlineBox* m_prevLeafChild;
91 mutable InlineBox* m_nextLeafChild;
94 inline RenderedPosition::RenderedPosition()
98 , m_prevLeafChild(uncachedInlineBox())
99 , m_nextLeafChild(uncachedInlineBox())
103 inline RenderedPosition::RenderedPosition(RenderObject* renderer, InlineBox* box, int offset)
104 : m_renderer(renderer)
107 , m_prevLeafChild(uncachedInlineBox())
108 , m_nextLeafChild(uncachedInlineBox())
112 bool renderObjectContainsPosition(RenderObject*, const Position&);
116 #endif // RenderedPosition_h