1
2/*
3 * Copyright 2012 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#ifndef SkRadialGradient_DEFINED
10#define SkRadialGradient_DEFINED
11
12#include "SkGradientShaderPriv.h"
13
14class SkRadialGradient : public SkGradientShaderBase {
15public:
16    SkRadialGradient(const SkPoint& center, SkScalar radius, const Descriptor&,
17                     const SkMatrix* localMatrix);
18
19    virtual size_t contextSize() const SK_OVERRIDE;
20
21    class RadialGradientContext : public SkGradientShaderBase::GradientShaderBaseContext {
22    public:
23        RadialGradientContext(const SkRadialGradient&, const ContextRec&);
24
25        virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVERRIDE;
26        virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OVERRIDE;
27
28    private:
29        typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED;
30    };
31
32    virtual BitmapType asABitmap(SkBitmap* bitmap,
33                                 SkMatrix* matrix,
34                                 TileMode* xy) const SK_OVERRIDE;
35    virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
36    virtual bool asNewEffect(GrContext*, const SkPaint&, const SkMatrix*, GrColor*, GrEffectRef**) const SK_OVERRIDE;
37
38    SK_TO_STRING_OVERRIDE()
39    SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkRadialGradient)
40
41protected:
42    SkRadialGradient(SkReadBuffer& buffer);
43    virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE;
44    virtual Context* onCreateContext(const ContextRec&, void* storage) const SK_OVERRIDE;
45
46private:
47    typedef SkGradientShaderBase INHERITED;
48    const SkPoint fCenter;
49    const SkScalar fRadius;
50};
51
52#endif
53