| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkTwoPointConicalGradient_DEFINED |
| #define SkTwoPointConicalGradient_DEFINED |
| |
| #include "SkColorSpaceXformer.h" |
| #include "SkGradientShaderPriv.h" |
| |
| class SkTwoPointConicalGradient final : public SkGradientShaderBase { |
| public: |
| static sk_sp<SkShader> Create(const SkPoint& start, SkScalar startRadius, |
| const SkPoint& end, SkScalar endRadius, |
| bool flippedGrad, const Descriptor&); |
| |
| SkShader::GradientType asAGradient(GradientInfo* info) const override; |
| #if SK_SUPPORT_GPU |
| std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override; |
| #endif |
| bool isOpaque() const override; |
| |
| SkScalar getCenterX1() const { return SkPoint::Distance(fCenter1, fCenter2); } |
| SkScalar getStartRadius() const { return fRadius1; } |
| SkScalar getDiffRadius() const { return fRadius2 - fRadius1; } |
| const SkPoint& getStartCenter() const { return fCenter1; } |
| const SkPoint& getEndCenter() const { return fCenter2; } |
| SkScalar getEndRadius() const { return fRadius2; } |
| bool isFlippedGrad() const { return fFlippedGrad; } |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointConicalGradient) |
| |
| protected: |
| void flatten(SkWriteBuffer& buffer) const override; |
| sk_sp<SkShader> onMakeColorSpace(SkColorSpaceXformer* xformer) const override; |
| |
| void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline, |
| SkRasterPipeline* postPipeline) const override; |
| |
| bool onIsRasterPipelineOnly(const SkMatrix&) const override { return true; } |
| |
| private: |
| enum class Type { |
| kRadial, |
| kTwoPoint, |
| }; |
| |
| SkTwoPointConicalGradient(const SkPoint& c0, SkScalar r0, |
| const SkPoint& c1, SkScalar r1, |
| bool flippedGrad, const Descriptor&, |
| Type, const SkMatrix&); |
| |
| SkPoint fCenter1; |
| SkPoint fCenter2; |
| SkScalar fRadius1; |
| SkScalar fRadius2; |
| bool fFlippedGrad; |
| Type fType; |
| |
| friend class SkGradientShader; |
| typedef SkGradientShaderBase INHERITED; |
| }; |
| |
| #endif |