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 : public SkGradientShaderBase {
14 public:
15     SkSweepGradient(SkScalar cx, SkScalar cy, const Descriptor&);
16 
17     class SweepGradientContext : public SkGradientShaderBase::GradientShaderBaseContext {
18     public:
19         SweepGradientContext(const SkSweepGradient& shader, const ContextRec&);
20 
21         void shadeSpan(int x, int y, SkPMColor dstC[], int count) override;
22 
23     private:
24         typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED;
25     };
26 
27     GradientType asAGradient(GradientInfo* info) const override;
28 
29 #if SK_SUPPORT_GPU
30     sk_sp<GrFragmentProcessor> asFragmentProcessor(const AsFPArgs&) const override;
31 #endif
32 
33     SK_TO_STRING_OVERRIDE()
34     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSweepGradient)
35 
36 protected:
37     void flatten(SkWriteBuffer& buffer) const override;
38     Context* onMakeContext(const ContextRec&, SkArenaAlloc*) const override;
39 
40 private:
41     const SkPoint fCenter;
42 
43     friend class SkGradientShader;
44     typedef SkGradientShaderBase INHERITED;
45 };
46 
47 #endif
48