| /* |
| * Copyright 2007 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkColorMatrix_DEFINED |
| #define SkColorMatrix_DEFINED |
| |
| #include "SkScalar.h" |
| |
| class SK_API SkColorMatrix { |
| public: |
| enum { |
| kCount = 20 |
| }; |
| SkScalar fMat[kCount]; |
| |
| enum Elem { |
| kR_Scale = 0, |
| kG_Scale = 6, |
| kB_Scale = 12, |
| kA_Scale = 18, |
| |
| kR_Trans = 4, |
| kG_Trans = 9, |
| kB_Trans = 14, |
| kA_Trans = 19, |
| }; |
| |
| void setIdentity(); |
| void setScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, |
| SkScalar aScale = SK_Scalar1); |
| void preScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, |
| SkScalar aScale = SK_Scalar1); |
| void postScale(SkScalar rScale, SkScalar gScale, SkScalar bScale, |
| SkScalar aScale = SK_Scalar1); |
| void postTranslate(SkScalar rTrans, SkScalar gTrans, SkScalar bTrans, |
| SkScalar aTrans = 0); |
| |
| enum Axis { |
| kR_Axis = 0, |
| kG_Axis = 1, |
| kB_Axis = 2 |
| }; |
| void setRotate(Axis, SkScalar degrees); |
| void setSinCos(Axis, SkScalar sine, SkScalar cosine); |
| void preRotate(Axis, SkScalar degrees); |
| void postRotate(Axis, SkScalar degrees); |
| |
| void setConcat(const SkColorMatrix& a, const SkColorMatrix& b); |
| void preConcat(const SkColorMatrix& mat) { this->setConcat(*this, mat); } |
| void postConcat(const SkColorMatrix& mat) { this->setConcat(mat, *this); } |
| |
| void setSaturation(SkScalar sat); |
| void setRGB2YUV(); |
| void setYUV2RGB(); |
| |
| bool operator==(const SkColorMatrix& other) const { |
| return 0 == memcmp(fMat, other.fMat, sizeof(fMat)); |
| } |
| |
| bool operator!=(const SkColorMatrix& other) const { return !((*this) == other); } |
| |
| static bool NeedsClamping(const SkScalar[20]); |
| static void SetConcat(SkScalar result[20], const SkScalar outer[20], const SkScalar inner[20]); |
| }; |
| |
| #endif |