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- /*
- * 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 "include/core/SkTypes.h"
- #include <memory.h>
- class SK_API SkColorMatrix {
- public:
- void setIdentity();
- void setScale(float rScale, float gScale, float bScale, float aScale = 1.0f);
- void setRowMajor(const float src[20]) {
- memcpy(fMat, src, sizeof(fMat));
- }
- void getRowMajor(float dst[20]) const {
- memcpy(dst, fMat, sizeof(fMat));
- }
- enum Axis {
- kR_Axis = 0,
- kG_Axis = 1,
- kB_Axis = 2
- };
- void setRotate(Axis, float degrees);
- void setSinCos(Axis, float sine, float cosine);
- void preRotate(Axis, float degrees);
- void postRotate(Axis, float degrees);
- void postTranslate(float dr, float dg, float db, float da);
- 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(float 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); }
- float* get20(float m[20]) const {
- memcpy(m, fMat, sizeof(fMat));
- return m;
- }
- void set20(const float m[20]) {
- memcpy(fMat, m, sizeof(fMat));
- }
- private:
- float fMat[20];
- friend class SkColorFilters;
- };
- #endif
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