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 FEComposite_h 24 #define FEComposite_h 25 26 #include "core/platform/graphics/filters/FilterEffect.h" 27 28 #include "core/platform/graphics/filters/Filter.h" 29 #include "wtf/text/WTFString.h" 30 31 namespace WebCore { 32 33 enum CompositeOperationType { 34 FECOMPOSITE_OPERATOR_UNKNOWN = 0, 35 FECOMPOSITE_OPERATOR_OVER = 1, 36 FECOMPOSITE_OPERATOR_IN = 2, 37 FECOMPOSITE_OPERATOR_OUT = 3, 38 FECOMPOSITE_OPERATOR_ATOP = 4, 39 FECOMPOSITE_OPERATOR_XOR = 5, 40 FECOMPOSITE_OPERATOR_ARITHMETIC = 6 41 }; 42 43 class FEComposite : public FilterEffect { 44 public: 45 static PassRefPtr<FEComposite> create(Filter*, const CompositeOperationType&, float, float, float, float); 46 47 CompositeOperationType operation() const; 48 bool setOperation(CompositeOperationType); 49 50 float k1() const; 51 bool setK1(float); 52 53 float k2() const; 54 bool setK2(float); 55 56 float k3() const; 57 bool setK3(float); 58 59 float k4() const; 60 bool setK4(float); 61 62 virtual void correctFilterResultIfNeeded() OVERRIDE; 63 64 virtual void determineAbsolutePaintRect(); 65 66 virtual TextStream& externalRepresentation(TextStream&, int indention) const; 67 68 virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) OVERRIDE; 69 70 protected: 71 virtual bool requiresValidPreMultipliedPixels() OVERRIDE { return m_type != FECOMPOSITE_OPERATOR_ARITHMETIC; } 72 73 private: 74 FEComposite(Filter*, const CompositeOperationType&, float, float, float, float); 75 76 virtual void applySoftware() OVERRIDE; 77 78 inline void platformArithmeticSoftware(Uint8ClampedArray* source, Uint8ClampedArray* destination, 79 float k1, float k2, float k3, float k4); 80 template <int b1, int b4> 81 static inline void computeArithmeticPixelsNeon(unsigned char* source, unsigned char* destination, 82 unsigned pixelArrayLength, float k1, float k2, float k3, float k4); 83 static inline void platformArithmeticNeon(unsigned char* source, unsigned char* destination, 84 unsigned pixelArrayLength, float k1, float k2, float k3, float k4); 85 86 CompositeOperationType m_type; 87 float m_k1; 88 float m_k2; 89 float m_k3; 90 float m_k4; 91 }; 92 93 } // namespace WebCore 94 95 #endif // FEComposite_h 96
