1 /* 2 * Copyright (C) Research In Motion Limited 2010. All rights reserved. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 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 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef SVGTextLayoutEngineSpacing_h 21 #define SVGTextLayoutEngineSpacing_h 22 23 #if ENABLE(SVG) 24 #include "SVGTextMetrics.h" 25 26 namespace WebCore { 27 28 class Font; 29 class SVGRenderStyle; 30 class SVGElement; 31 32 // Helper class used by SVGTextLayoutEngine to handle 'kerning' / 'letter-spacing' and 'word-spacing'. 33 class SVGTextLayoutEngineSpacing { 34 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineSpacing); 35 public: 36 SVGTextLayoutEngineSpacing(const Font&); 37 38 float calculateSVGKerning(bool isVerticalText, const SVGTextMetrics::Glyph& currentGlyph); 39 float calculateCSSKerningAndSpacing(const SVGRenderStyle*, SVGElement* lengthContext, const UChar* currentCharacter); 40 41 private: 42 const Font& m_font; 43 const UChar* m_lastCharacter; 44 45 #if ENABLE(SVG_FONTS) 46 SVGTextMetrics::Glyph m_lastGlyph; 47 #endif 48 }; 49 50 } // namespace WebCore 51 52 #endif // ENABLE(SVG) 53 #endif 54