1 /* 2 Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org> 3 2004, 2005 Rob Buis <buis@kde.org> 4 2005 Eric Seidel <eric@webkit.org> 5 6 This library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Library General Public 8 License as published by the Free Software Foundation; either 9 version 2 of the License, or (at your option) any later version. 10 11 This library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Library General Public License for more details. 15 16 You should have received a copy of the GNU Library General Public License 17 aint with this library; see the file COPYING.LIB. If not, write to 18 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 Boston, MA 02110-1301, USA. 20 */ 21 22 #ifndef SVGFEDisplacementMap_h 23 #define SVGFEDisplacementMap_h 24 25 #if ENABLE(SVG) && ENABLE(FILTERS) 26 #include "PlatformString.h" 27 #include "FilterEffect.h" 28 #include "Filter.h" 29 30 namespace WebCore { 31 32 enum ChannelSelectorType { 33 CHANNEL_UNKNOWN = 0, 34 CHANNEL_R = 1, 35 CHANNEL_G = 2, 36 CHANNEL_B = 3, 37 CHANNEL_A = 4 38 }; 39 40 class FEDisplacementMap : public FilterEffect { 41 public: 42 static PassRefPtr<FEDisplacementMap> create(FilterEffect*, FilterEffect*, ChannelSelectorType, 43 ChannelSelectorType, const float&); 44 45 ChannelSelectorType xChannelSelector() const; 46 void setXChannelSelector(const ChannelSelectorType); 47 48 ChannelSelectorType yChannelSelector() const; 49 void setYChannelSelector(const ChannelSelectorType); 50 51 float scale() const; 52 void setScale(float scale); 53 uniteChildEffectSubregions(Filter * filter)54 virtual FloatRect uniteChildEffectSubregions(Filter* filter) { return calculateUnionOfChildEffectSubregions(filter, m_in.get(), m_in2.get()); } 55 void apply(Filter*); 56 void dump(); 57 TextStream& externalRepresentation(TextStream& ts) const; 58 59 private: 60 FEDisplacementMap(FilterEffect*, FilterEffect*, ChannelSelectorType, 61 ChannelSelectorType, const float&); 62 63 RefPtr<FilterEffect> m_in; 64 RefPtr<FilterEffect> m_in2; 65 ChannelSelectorType m_xChannelSelector; 66 ChannelSelectorType m_yChannelSelector; 67 float m_scale; 68 }; 69 70 } // namespace WebCore 71 72 #endif // ENABLE(SVG) && ENABLE(FILTERS) 73 74 #endif // SVGFEDisplacementMap_h 75