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 #include "core/rendering/svg/SVGTextMetrics.h" 24 25 namespace WebCore { 26 27 class Font; 28 class SVGRenderStyle; 29 class SVGElement; 30 31 // Helper class used by SVGTextLayoutEngine to handle 'kerning' / 'letter-spacing' and 'word-spacing'. 32 class SVGTextLayoutEngineSpacing { 33 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineSpacing); 34 public: 35 SVGTextLayoutEngineSpacing(const Font&); 36 37 float calculateSVGKerning(bool isVerticalText, const SVGTextMetrics::Glyph& currentGlyph); 38 float calculateCSSKerningAndSpacing(const SVGRenderStyle*, SVGElement* lengthContext, UChar currentCharacter); 39 40 private: 41 const Font& m_font; 42 UChar m_lastCharacter; 43 44 #if ENABLE(SVG_FONTS) 45 SVGTextMetrics::Glyph m_lastGlyph; 46 #endif 47 }; 48 49 } // namespace WebCore 50 51 #endif 52
