blob: f2b7964b5f77f9cd4818c73fb47e8ad2cd3b1413 [file] [log] [blame]
* 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 {
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));
float fMat[20];
friend class SkColorFilters;