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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 SkColorMatrixFilter_DEFINED
#define SkColorMatrixFilter_DEFINED
#include "SkColorFilter.h"
#include "SkColorMatrix.h"
class SK_API SkColorMatrixFilter : public SkColorFilter {
public:
static SkColorFilter* Create(const SkColorMatrix& cm) {
return new SkColorMatrixFilter(cm);
}
static SkColorFilter* Create(const SkScalar array[20]) {
return new SkColorMatrixFilter(array);
}
/**
* Create a colorfilter that multiplies the RGB channels by one color, and
* then adds a second color, pinning the result for each component to
* [0..255]. The alpha components of the mul and add arguments
* are ignored.
*/
static SkColorFilter* CreateLightingFilter(SkColor mul, SkColor add);
void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const override;
uint32_t getFlags() const override;
bool asColorMatrix(SkScalar matrix[20]) const override;
SkColorFilter* newComposed(const SkColorFilter*) const override;
#if SK_SUPPORT_GPU
const GrFragmentProcessor* asFragmentProcessor(GrContext*) const override;
#endif
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorMatrixFilter)
protected:
explicit SkColorMatrixFilter(const SkColorMatrix&);
explicit SkColorMatrixFilter(const SkScalar array[20]);
void flatten(SkWriteBuffer&) const override;
private:
SkColorMatrix fMatrix;
float fTranspose[SkColorMatrix::kCount]; // for Sk4s
uint32_t fFlags;
void initState(const SkScalar array[20]);
typedef SkColorFilter INHERITED;
};
#endif
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