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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkColorFilter.h"
#include "SkFlattenable.h"
#ifndef SkOverdrawColorFilter_DEFINED
#define SkOverdrawColorFilter_DEFINED
/**
* Uses the value in the src alpha channel to set the dst pixel.
* 0 -> fColors[0]
* 1 -> fColors[1]
* ...
* 5 (or larger) -> fColors[5]
*
*/
class SK_API SkOverdrawColorFilter : public SkColorFilter {
public:
static constexpr int kNumColors = 6;
static sk_sp<SkOverdrawColorFilter> Make(const SkPMColor colors[kNumColors]) {
return sk_sp<SkOverdrawColorFilter>(new SkOverdrawColorFilter(colors));
}
#if SK_SUPPORT_GPU
std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(
GrContext*, const GrColorSpaceInfo&) const override;
#endif
static sk_sp<SkFlattenable> CreateProc(SkReadBuffer& buffer);
Factory getFactory() const override { return CreateProc; }
static void InitializeFlattenables();
protected:
void flatten(SkWriteBuffer& buffer) const override;
private:
SkOverdrawColorFilter(const SkPMColor colors[kNumColors]) {
memcpy(fColors, colors, kNumColors * sizeof(SkPMColor));
}
void onAppendStages(SkRasterPipeline*, SkColorSpace*, SkArenaAlloc*, bool) const override;
SkPMColor fColors[kNumColors];
typedef SkColorFilter INHERITED;
};
#endif // SkOverdrawColorFilter_DEFINED
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