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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 |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
| 13 * | 13 * |
| 14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
| 18 */ | 18 */ |
| 19 | 19 |
| 20 #ifndef SVGTextLayoutEngineBaseline_h | 20 #ifndef SVGTextLayoutEngineBaseline_h |
| 21 #define SVGTextLayoutEngineBaseline_h | 21 #define SVGTextLayoutEngineBaseline_h |
| 22 | 22 |
| 23 #include "core/rendering/style/SVGRenderStyleDefs.h" | 23 #include "core/rendering/style/SVGRenderStyleDefs.h" |
| 24 #include "wtf/Noncopyable.h" | 24 #include "wtf/Noncopyable.h" |
| 25 | 25 |
| 26 namespace blink { | 26 namespace blink { |
| 27 | 27 |
| 28 class Font; | 28 class Font; |
| 29 class RenderObject; | 29 class LayoutObject; |
| 30 class SVGElement; | 30 class SVGElement; |
| 31 class SVGRenderStyle; | 31 class SVGRenderStyle; |
| 32 class SVGTextMetrics; | 32 class SVGTextMetrics; |
| 33 | 33 |
| 34 // Helper class used by SVGTextLayoutEngine to handle 'alignment-baseline' / 'do
minant-baseline' and 'baseline-shift'. | 34 // Helper class used by SVGTextLayoutEngine to handle 'alignment-baseline' / 'do
minant-baseline' and 'baseline-shift'. |
| 35 class SVGTextLayoutEngineBaseline { | 35 class SVGTextLayoutEngineBaseline { |
| 36 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineBaseline); | 36 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineBaseline); |
| 37 public: | 37 public: |
| 38 SVGTextLayoutEngineBaseline(const Font&); | 38 SVGTextLayoutEngineBaseline(const Font&); |
| 39 | 39 |
| 40 float calculateBaselineShift(const SVGRenderStyle&, SVGElement* lengthContex
t) const; | 40 float calculateBaselineShift(const SVGRenderStyle&, SVGElement* lengthContex
t) const; |
| 41 float calculateAlignmentBaselineShift(bool isVerticalText, const RenderObjec
t* textRenderer) const; | 41 float calculateAlignmentBaselineShift(bool isVerticalText, const LayoutObjec
t* textRenderer) const; |
| 42 float calculateGlyphOrientationAngle(bool isVerticalText, const SVGRenderSty
le&, const UChar& character) const; | 42 float calculateGlyphOrientationAngle(bool isVerticalText, const SVGRenderSty
le&, const UChar& character) const; |
| 43 float calculateGlyphAdvanceAndOrientation(bool isVerticalText, const SVGText
Metrics&, float angle, float& xOrientationShift, float& yOrientationShift) const
; | 43 float calculateGlyphAdvanceAndOrientation(bool isVerticalText, const SVGText
Metrics&, float angle, float& xOrientationShift, float& yOrientationShift) const
; |
| 44 | 44 |
| 45 private: | 45 private: |
| 46 EAlignmentBaseline dominantBaselineToAlignmentBaseline(bool isVerticalText,
const RenderObject* textRenderer) const; | 46 EAlignmentBaseline dominantBaselineToAlignmentBaseline(bool isVerticalText,
const LayoutObject* textRenderer) const; |
| 47 | 47 |
| 48 const Font& m_font; | 48 const Font& m_font; |
| 49 }; | 49 }; |
| 50 | 50 |
| 51 } // namespace blink | 51 } // namespace blink |
| 52 | 52 |
| 53 #endif | 53 #endif |
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