1 /*
2  * Copyright 2012 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef SkSweepGradient_DEFINED
9 #define SkSweepGradient_DEFINED
10 
11 #include "SkGradientShaderPriv.h"
12 
13 class SkSweepGradient final : public SkGradientShaderBase {
14 public:
15     SkSweepGradient(const SkPoint& center, SkScalar t0, SkScalar t1, const Descriptor&);
16 
17     GradientType asAGradient(GradientInfo* info) const override;
18 
19 #if SK_SUPPORT_GPU
20     std::unique_ptr<GrFragmentProcessor> asFragmentProcessor(const GrFPArgs&) const override;
21 #endif
22 
23     SK_TO_STRING_OVERRIDE()
24     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSweepGradient)
25 
26 protected:
27     void flatten(SkWriteBuffer& buffer) const override;
28     sk_sp<SkShader> onMakeColorSpace(SkColorSpaceXformer* xformer) const override;
29 
30     void appendGradientStages(SkArenaAlloc* alloc, SkRasterPipeline* tPipeline,
31                               SkRasterPipeline* postPipeline) const override;
32 
onIsRasterPipelineOnly(const SkMatrix &)33     bool onIsRasterPipelineOnly(const SkMatrix&) const override { return true; }
34 
35 private:
36     const SkPoint  fCenter;
37     const SkScalar fTBias,
38                    fTScale;
39 
40     friend class SkGradientShader;
41     typedef SkGradientShaderBase INHERITED;
42 };
43 
44 #endif
45