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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 SkColorMatrixFilter* Create(const SkColorMatrix& cm) {
return SkNEW_ARGS(SkColorMatrixFilter, (cm));
}
static SkColorMatrixFilter* Create(const SkScalar array[20]) {
return SkNEW_ARGS(SkColorMatrixFilter, (array));
}
// overrides from SkColorFilter
virtual void filterSpan(const SkPMColor src[], int count, SkPMColor[]) const SK_OVERRIDE;
virtual void filterSpan16(const uint16_t src[], int count, uint16_t[]) const SK_OVERRIDE;
virtual uint32_t getFlags() const SK_OVERRIDE;
virtual bool asColorMatrix(SkScalar matrix[20]) const SK_OVERRIDE;
#if SK_SUPPORT_GPU
virtual GrFragmentProcessor* asFragmentProcessor(GrContext*) const SK_OVERRIDE;
#endif
struct State {
int32_t fArray[20];
int fShift;
};
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkColorMatrixFilter)
protected:
explicit SkColorMatrixFilter(const SkColorMatrix&);
explicit SkColorMatrixFilter(const SkScalar array[20]);
virtual void flatten(SkWriteBuffer&) const SK_OVERRIDE;
private:
SkColorMatrix fMatrix;
typedef void (*Proc)(const State&, unsigned r, unsigned g, unsigned b,
unsigned a, int32_t result[4]);
Proc fProc;
State fState;
uint32_t fFlags;
void initState(const SkScalar array[20]);
typedef SkColorFilter INHERITED;
};
#endif
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