diff options
Diffstat (limited to 'include/effects')
-rw-r--r-- | include/effects/SkOverdrawColorFilter.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/effects/SkOverdrawColorFilter.h b/include/effects/SkOverdrawColorFilter.h new file mode 100644 index 0000000000..ac97821269 --- /dev/null +++ b/include/effects/SkOverdrawColorFilter.h @@ -0,0 +1,56 @@ +/* + * 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*, + SkColorSpace*) const override; +#endif + + void toString(SkString* str) const override; + + static sk_sp<SkFlattenable> CreateProc(SkReadBuffer& buffer); + Factory getFactory() const override { return CreateProc; } + SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() + +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 |