1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SkColorMatrix_DEFINED 18 #define SkColorMatrix_DEFINED 19 20 #include "SkScalar.h" 21 22 class SkColorMatrix { 23 public: 24 SkScalar fMat[20]; 25 26 void setIdentity(); 27 void setScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, 28 SkScalar aScale = SK_Scalar1); 29 void preScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, 30 SkScalar aScale = SK_Scalar1); 31 void postScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, 32 SkScalar aScale = SK_Scalar1); 33 34 enum Axis { 35 kR_Axis = 0, 36 kG_Axis = 1, 37 kB_Axis = 2 38 }; 39 void setRotate(Axis, SkScalar degrees); 40 void setSinCos(Axis, SkScalar sine, SkScalar cosine); 41 void preRotate(Axis, SkScalar degrees); 42 void postRotate(Axis, SkScalar degrees); 43 44 void setConcat(const SkColorMatrix& a, const SkColorMatrix& b); preConcat(const SkColorMatrix & mat)45 void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); } postConcat(const SkColorMatrix & mat)46 void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); } 47 48 void setSaturation(SkScalar sat); 49 void setRGB2YUV(); 50 void setYUV2RGB(); 51 }; 52 53 #endif 54