1 /* 2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 3 * Copyright (C) 2004, 2005 Rob Buis <buis (at) kde.org> 4 * Copyright (C) 2005 Eric Seidel <eric (at) webkit.org> 5 * Copyright (C) 2013 Google Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 #ifndef FEColorMatrix_h 24 #define FEColorMatrix_h 25 26 #include "platform/graphics/filters/Filter.h" 27 #include "platform/graphics/filters/FilterEffect.h" 28 #include "wtf/Vector.h" 29 30 namespace blink { 31 32 enum ColorMatrixType { 33 FECOLORMATRIX_TYPE_UNKNOWN = 0, 34 FECOLORMATRIX_TYPE_MATRIX = 1, 35 FECOLORMATRIX_TYPE_SATURATE = 2, 36 FECOLORMATRIX_TYPE_HUEROTATE = 3, 37 FECOLORMATRIX_TYPE_LUMINANCETOALPHA = 4 38 }; 39 40 class PLATFORM_EXPORT FEColorMatrix : public FilterEffect { 41 public: 42 static PassRefPtr<FEColorMatrix> create(Filter*, ColorMatrixType, const Vector<float>&); 43 44 ColorMatrixType type() const; 45 bool setType(ColorMatrixType); 46 47 const Vector<float>& values() const; 48 bool setValues(const Vector<float>&); 49 50 virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) OVERRIDE; 51 52 virtual TextStream& externalRepresentation(TextStream&, int indention) const OVERRIDE; 53 54 static inline void calculateSaturateComponents(float* components, float value); 55 static inline void calculateHueRotateComponents(float* components, float value); 56 57 private: 58 FEColorMatrix(Filter*, ColorMatrixType, const Vector<float>&); 59 60 virtual void applySoftware() OVERRIDE; 61 62 virtual bool affectsTransparentPixels() OVERRIDE; 63 64 ColorMatrixType m_type; 65 Vector<float> m_values; 66 }; 67 68 } // namespace blink 69 70 #endif // FEColorMatrix_h 71
