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Side by Side Diff: third_party/WebKit/Source/core/layout/svg/SVGTextLayoutEngineBaseline.h

Issue 1404853003: Add SVG Text to support the CSS 'text-orientation' property (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: drott review Created 5 years, 2 months ago
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1 /* 1 /*
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 2 * Copyright (C) Research In Motion Limited 2010. 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
(...skipping 24 matching lines...) Expand all
35 35
36 // Helper class used by SVGTextLayoutEngine to handle 'alignment-baseline' / 'do minant-baseline' and 'baseline-shift'. 36 // Helper class used by SVGTextLayoutEngine to handle 'alignment-baseline' / 'do minant-baseline' and 'baseline-shift'.
37 class SVGTextLayoutEngineBaseline { 37 class SVGTextLayoutEngineBaseline {
38 STACK_ALLOCATED(); 38 STACK_ALLOCATED();
39 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineBaseline); 39 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineBaseline);
40 public: 40 public:
41 SVGTextLayoutEngineBaseline(const Font&, float effectiveZoom); 41 SVGTextLayoutEngineBaseline(const Font&, float effectiveZoom);
42 42
43 float calculateBaselineShift(const ComputedStyle&) const; 43 float calculateBaselineShift(const ComputedStyle&) const;
44 float calculateAlignmentBaselineShift(bool isVerticalText, const LayoutObjec t* textLayoutObject) const; 44 float calculateAlignmentBaselineShift(bool isVerticalText, const LayoutObjec t* textLayoutObject) const;
45 float calculateGlyphOrientationAngle(bool isVerticalText, const SVGComputedS tyle&, const UChar32 character) const;
46 float calculateGlyphAdvanceAndOrientation(bool isVerticalText, const SVGText Metrics&, float angle, float& xOrientationShift, float& yOrientationShift) const ;
47 45
48 private: 46 private:
49 EAlignmentBaseline dominantBaselineToAlignmentBaseline(bool isVerticalText, const LayoutObject* textLayoutObject) const; 47 EAlignmentBaseline dominantBaselineToAlignmentBaseline(bool isVerticalText, const LayoutObject* textLayoutObject) const;
50 48
51 const Font& m_font; 49 const Font& m_font;
52 50
53 // Everything we read from the m_font's font descriptor during layout is sca led by the effective 51 // Everything we read from the m_font's font descriptor during layout is sca led by the effective
54 // zoom, as fonts always are in computed style. Since layout inside SVG take s place in unzoomed 52 // zoom, as fonts always are in computed style. Since layout inside SVG take s place in unzoomed
55 // coordinates we have to compensate for zoom when reading values from the f ont descriptor. 53 // coordinates we have to compensate for zoom when reading values from the f ont descriptor.
56 float m_effectiveZoom; 54 float m_effectiveZoom;
57 }; 55 };
58 56
59 } // namespace blink 57 } // namespace blink
60 58
61 #endif 59 #endif
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