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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 Loading... |
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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