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1 /* | 1 /* |
2 * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved. | 2 * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved. |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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23 #include "core/layout/svg/SVGTextChunkBuilder.h" | 23 #include "core/layout/svg/SVGTextChunkBuilder.h" |
24 #include "core/layout/svg/SVGTextFragment.h" | 24 #include "core/layout/svg/SVGTextFragment.h" |
25 #include "core/layout/svg/SVGTextLayoutAttributes.h" | 25 #include "core/layout/svg/SVGTextLayoutAttributes.h" |
26 #include "core/layout/svg/SVGTextMetrics.h" | 26 #include "core/layout/svg/SVGTextMetrics.h" |
27 #include "platform/graphics/Path.h" | 27 #include "platform/graphics/Path.h" |
28 #include "wtf/Vector.h" | 28 #include "wtf/Vector.h" |
29 | 29 |
30 namespace blink { | 30 namespace blink { |
31 | 31 |
32 class LayoutObject; | 32 class LayoutObject; |
33 class LayoutStyle; | 33 class ComputedStyle; |
34 class LayoutSVGInlineText; | 34 class LayoutSVGInlineText; |
35 class SVGInlineTextBox; | 35 class SVGInlineTextBox; |
36 | 36 |
37 // SVGTextLayoutEngine performs the second layout phase for SVG text. | 37 // SVGTextLayoutEngine performs the second layout phase for SVG text. |
38 // | 38 // |
39 // The InlineBox tree was created, containing the text chunk information, necess
ary to apply | 39 // The InlineBox tree was created, containing the text chunk information, necess
ary to apply |
40 // certain SVG specific text layout properties (text-length adjustments and text
-anchor). | 40 // certain SVG specific text layout properties (text-length adjustments and text
-anchor). |
41 // The second layout phase uses the SVGTextLayoutAttributes stored in the indivi
dual | 41 // The second layout phase uses the SVGTextLayoutAttributes stored in the indivi
dual |
42 // LayoutSVGInlineText layoutObjects to compute the final positions for each cha
racter | 42 // LayoutSVGInlineText layoutObjects to compute the final positions for each cha
racter |
43 // which are stored in the SVGInlineTextBox objects. | 43 // which are stored in the SVGInlineTextBox objects. |
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56 void finishLayout(); | 56 void finishLayout(); |
57 | 57 |
58 private: | 58 private: |
59 void updateCharacterPositionIfNeeded(float& x, float& y); | 59 void updateCharacterPositionIfNeeded(float& x, float& y); |
60 void updateCurrentTextPosition(float x, float y, float glyphAdvance); | 60 void updateCurrentTextPosition(float x, float y, float glyphAdvance); |
61 void updateRelativePositionAdjustmentsIfNeeded(float dx, float dy); | 61 void updateRelativePositionAdjustmentsIfNeeded(float dx, float dy); |
62 | 62 |
63 void recordTextFragment(SVGInlineTextBox*, const Vector<SVGTextMetrics>&); | 63 void recordTextFragment(SVGInlineTextBox*, const Vector<SVGTextMetrics>&); |
64 bool parentDefinesTextLength(LayoutObject*) const; | 64 bool parentDefinesTextLength(LayoutObject*) const; |
65 | 65 |
66 void layoutTextOnLineOrPath(SVGInlineTextBox*, const LayoutSVGInlineText&, c
onst LayoutStyle&); | 66 void layoutTextOnLineOrPath(SVGInlineTextBox*, const LayoutSVGInlineText&, c
onst ComputedStyle&); |
67 void finalizeTransformMatrices(Vector<SVGInlineTextBox*>&); | 67 void finalizeTransformMatrices(Vector<SVGInlineTextBox*>&); |
68 | 68 |
69 bool currentLogicalCharacterAttributes(SVGTextLayoutAttributes*&); | 69 bool currentLogicalCharacterAttributes(SVGTextLayoutAttributes*&); |
70 bool currentLogicalCharacterMetrics(SVGTextLayoutAttributes*&, SVGTextMetric
s&); | 70 bool currentLogicalCharacterMetrics(SVGTextLayoutAttributes*&, SVGTextMetric
s&); |
71 bool currentVisualCharacterMetrics(SVGInlineTextBox*, const Vector<SVGTextMe
trics>&, SVGTextMetrics&); | 71 bool currentVisualCharacterMetrics(SVGInlineTextBox*, const Vector<SVGTextMe
trics>&, SVGTextMetrics&); |
72 | 72 |
73 void advanceToNextLogicalCharacter(const SVGTextMetrics&); | 73 void advanceToNextLogicalCharacter(const SVGTextMetrics&); |
74 void advanceToNextVisualCharacter(const SVGTextMetrics&); | 74 void advanceToNextVisualCharacter(const SVGTextMetrics&); |
75 | 75 |
76 private: | 76 private: |
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98 float m_textPathLength; | 98 float m_textPathLength; |
99 float m_textPathStartOffset; | 99 float m_textPathStartOffset; |
100 float m_textPathCurrentOffset; | 100 float m_textPathCurrentOffset; |
101 float m_textPathSpacing; | 101 float m_textPathSpacing; |
102 float m_textPathScaling; | 102 float m_textPathScaling; |
103 }; | 103 }; |
104 | 104 |
105 } // namespace blink | 105 } // namespace blink |
106 | 106 |
107 #endif | 107 #endif |
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