1 /* 2 * Copyright 2007 The Android Open Source Project 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkColorMatrix_DEFINED 9 #define SkColorMatrix_DEFINED 10 11 #include "SkScalar.h" 12 13 class SK_API SkColorMatrix { 14 public: 15 SkScalar fMat[20]; 16 17 void setIdentity(); 18 void setScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, 19 SkScalar aScale = SK_Scalar1); 20 void preScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, 21 SkScalar aScale = SK_Scalar1); 22 void postScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, 23 SkScalar aScale = SK_Scalar1); 24 25 enum Axis { 26 kR_Axis = 0, 27 kG_Axis = 1, 28 kB_Axis = 2 29 }; 30 void setRotate(Axis, SkScalar degrees); 31 void setSinCos(Axis, SkScalar sine, SkScalar cosine); 32 void preRotate(Axis, SkScalar degrees); 33 void postRotate(Axis, SkScalar degrees); 34 35 void setConcat(const SkColorMatrix& a, const SkColorMatrix& b); preConcat(const SkColorMatrix & mat)36 void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); } postConcat(const SkColorMatrix & mat)37 void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); } 38 39 void setSaturation(SkScalar sat); 40 void setRGB2YUV(); 41 void setYUV2RGB(); 42 43 bool operator==(const SkColorMatrix& other) const { 44 return 0 == memcmp(fMat, other.fMat, sizeof(fMat)); 45 } 46 47 bool operator!=(const SkColorMatrix& other) const { return !((*this) == other); } 48 }; 49 50 #endif 51