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 SVGPathBlender_h 21 #define SVGPathBlender_h 22 23 #if ENABLE(SVG) 24 #include "SVGPathConsumer.h" 25 #include "SVGPathSource.h" 26 27 namespace WebCore { 28 29 enum FloatBlendMode { 30 BlendHorizontal, 31 BlendVertical 32 }; 33 34 class SVGPathBlender { 35 WTF_MAKE_NONCOPYABLE(SVGPathBlender); WTF_MAKE_FAST_ALLOCATED; 36 public: 37 SVGPathBlender(); 38 39 bool blendAnimatedPath(float, SVGPathSource*, SVGPathSource*, SVGPathConsumer*); 40 void cleanup(); 41 42 private: 43 bool blendMoveToSegment(); 44 bool blendLineToSegment(); 45 bool blendLineToHorizontalSegment(); 46 bool blendLineToVerticalSegment(); 47 bool blendCurveToCubicSegment(); 48 bool blendCurveToCubicSmoothSegment(); 49 bool blendCurveToQuadraticSegment(); 50 bool blendCurveToQuadraticSmoothSegment(); 51 bool blendArcToSegment(); 52 53 float blendAnimatedDimensonalFloat(float, float, FloatBlendMode); 54 FloatPoint blendAnimatedFloatPoint(const FloatPoint& from, const FloatPoint& to); 55 56 SVGPathSource* m_fromSource; 57 SVGPathSource* m_toSource; 58 SVGPathConsumer* m_consumer; 59 60 FloatPoint m_fromCurrentPoint; 61 FloatPoint m_toCurrentPoint; 62 63 PathCoordinateMode m_fromMode; 64 PathCoordinateMode m_toMode; 65 float m_progress; 66 bool m_isInFirstHalfOfAnimation; 67 }; 68 69 } // namespace WebCore 70 71 #endif // ENABLE(SVG) 72 #endif // SVGPathBlender_h 73