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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 29 */ | 29 */ |
| 30 | 30 |
| 31 #ifndef RenderedPosition_h | 31 #ifndef RenderedPosition_h |
| 32 #define RenderedPosition_h | 32 #define RenderedPosition_h |
| 33 | 33 |
| 34 #include "core/editing/TextAffinity.h" | 34 #include "core/editing/TextAffinity.h" |
| 35 #include "core/rendering/InlineBox.h" | 35 #include "core/rendering/InlineBox.h" |
| 36 | 36 |
| 37 namespace blink { | 37 namespace blink { |
| 38 | 38 |
| 39 class GraphicsLayer; |
| 39 class LayoutUnit; | 40 class LayoutUnit; |
| 40 class Position; | 41 class Position; |
| 41 class RenderObject; | 42 class RenderObject; |
| 42 class VisiblePosition; | 43 class VisiblePosition; |
| 44 struct CompositedSelectionBound; |
| 43 | 45 |
| 44 class RenderedPosition { | 46 class RenderedPosition { |
| 45 public: | 47 public: |
| 46 RenderedPosition(); | 48 RenderedPosition(); |
| 47 explicit RenderedPosition(const VisiblePosition&); | 49 explicit RenderedPosition(const VisiblePosition&); |
| 48 explicit RenderedPosition(const Position&, EAffinity); | 50 explicit RenderedPosition(const Position&, EAffinity); |
| 49 bool isEquivalent(const RenderedPosition&) const; | 51 bool isEquivalent(const RenderedPosition&) const; |
| 50 | 52 |
| 51 bool isNull() const { return !m_renderer; } | 53 bool isNull() const { return !m_renderer; } |
| 52 RootInlineBox* rootBox() { return m_inlineBox ? &m_inlineBox->root() : 0; } | 54 RootInlineBox* rootBox() { return m_inlineBox ? &m_inlineBox->root() : 0; } |
| 53 | 55 |
| 54 unsigned char bidiLevelOnLeft() const; | 56 unsigned char bidiLevelOnLeft() const; |
| 55 unsigned char bidiLevelOnRight() const; | 57 unsigned char bidiLevelOnRight() const; |
| 56 RenderedPosition leftBoundaryOfBidiRun(unsigned char bidiLevelOfRun); | 58 RenderedPosition leftBoundaryOfBidiRun(unsigned char bidiLevelOfRun); |
| 57 RenderedPosition rightBoundaryOfBidiRun(unsigned char bidiLevelOfRun); | 59 RenderedPosition rightBoundaryOfBidiRun(unsigned char bidiLevelOfRun); |
| 58 | 60 |
| 59 enum ShouldMatchBidiLevel { MatchBidiLevel, IgnoreBidiLevel }; | 61 enum ShouldMatchBidiLevel { MatchBidiLevel, IgnoreBidiLevel }; |
| 60 bool atLeftBoundaryOfBidiRun() const { return atLeftBoundaryOfBidiRun(Ignore
BidiLevel, 0); } | 62 bool atLeftBoundaryOfBidiRun() const { return atLeftBoundaryOfBidiRun(Ignore
BidiLevel, 0); } |
| 61 bool atRightBoundaryOfBidiRun() const { return atRightBoundaryOfBidiRun(Igno
reBidiLevel, 0); } | 63 bool atRightBoundaryOfBidiRun() const { return atRightBoundaryOfBidiRun(Igno
reBidiLevel, 0); } |
| 62 // The following two functions return true only if the current position is a
t the end of the bidi run | 64 // The following two functions return true only if the current position is a
t the end of the bidi run |
| 63 // of the specified bidi embedding level. | 65 // of the specified bidi embedding level. |
| 64 bool atLeftBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return at
LeftBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); } | 66 bool atLeftBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return at
LeftBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); } |
| 65 bool atRightBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return a
tRightBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); } | 67 bool atRightBoundaryOfBidiRun(unsigned char bidiLevelOfRun) const { return a
tRightBoundaryOfBidiRun(MatchBidiLevel, bidiLevelOfRun); } |
| 66 | 68 |
| 67 Position positionAtLeftBoundaryOfBiDiRun() const; | 69 Position positionAtLeftBoundaryOfBiDiRun() const; |
| 68 Position positionAtRightBoundaryOfBiDiRun() const; | 70 Position positionAtRightBoundaryOfBiDiRun() const; |
| 69 | 71 |
| 70 IntRect absoluteRect(LayoutUnit* extraWidthToEndOfLine = 0) const; | 72 IntRect absoluteRect(LayoutUnit* extraWidthToEndOfLine = 0) const; |
| 73 void positionInGraphicsLayerBacking(CompositedSelectionBound&) const; |
| 71 | 74 |
| 72 private: | 75 private: |
| 73 bool operator==(const RenderedPosition&) const { return false; } | 76 bool operator==(const RenderedPosition&) const { return false; } |
| 74 explicit RenderedPosition(RenderObject*, InlineBox*, int offset); | 77 explicit RenderedPosition(RenderObject*, InlineBox*, int offset); |
| 75 | 78 |
| 76 InlineBox* prevLeafChild() const; | 79 InlineBox* prevLeafChild() const; |
| 77 InlineBox* nextLeafChild() const; | 80 InlineBox* nextLeafChild() const; |
| 78 bool atLeftmostOffsetInBox() const { return m_inlineBox && m_offset == m_inl
ineBox->caretLeftmostOffset(); } | 81 bool atLeftmostOffsetInBox() const { return m_inlineBox && m_offset == m_inl
ineBox->caretLeftmostOffset(); } |
| 79 bool atRightmostOffsetInBox() const { return m_inlineBox && m_offset == m_in
lineBox->caretRightmostOffset(); } | 82 bool atRightmostOffsetInBox() const { return m_inlineBox && m_offset == m_in
lineBox->caretRightmostOffset(); } |
| 80 bool atLeftBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOf
Run) const; | 83 bool atLeftBoundaryOfBidiRun(ShouldMatchBidiLevel, unsigned char bidiLevelOf
Run) const; |
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| 107 , m_prevLeafChild(uncachedInlineBox()) | 110 , m_prevLeafChild(uncachedInlineBox()) |
| 108 , m_nextLeafChild(uncachedInlineBox()) | 111 , m_nextLeafChild(uncachedInlineBox()) |
| 109 { | 112 { |
| 110 } | 113 } |
| 111 | 114 |
| 112 bool renderObjectContainsPosition(RenderObject*, const Position&); | 115 bool renderObjectContainsPosition(RenderObject*, const Position&); |
| 113 | 116 |
| 114 }; | 117 }; |
| 115 | 118 |
| 116 #endif // RenderedPosition_h | 119 #endif // RenderedPosition_h |
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