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 29 // Helper class used by SVGTextLayoutEngine to handle 'letter-spacing' and 'word-spacing'. 30 class SVGTextLayoutEngineSpacing { 31 WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineSpacing); 32 public: 33 SVGTextLayoutEngineSpacing(const Font&, float effectiveZoom); 34 35 float calculateSVGKerning(bool isVerticalText, Glyph currentGlyph); 36 float calculateCSSSpacing(UChar currentCharacter); 37 38 private: 39 const Font& m_font; 40 UChar m_lastCharacter; 41 float m_effectiveZoom; 42 43 #if ENABLE(SVG_FONTS) 44 Glyph m_lastGlyph; 45 #endif 46 }; 47 48 } // namespace WebCore 49 50 #endif 51