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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #ifndef SkTwoPointRadialGradient_DEFINED | 9 #ifndef SkTwoPointRadialGradient_DEFINED |
10 #define SkTwoPointRadialGradient_DEFINED | 10 #define SkTwoPointRadialGradient_DEFINED |
11 | 11 |
12 #include "SkGradientShaderPriv.h" | 12 #include "SkGradientShaderPriv.h" |
13 | 13 |
14 class SkTwoPointRadialGradient : public SkGradientShaderBase { | 14 class SkTwoPointRadialGradient : public SkGradientShaderBase { |
15 public: | 15 public: |
16 SkTwoPointRadialGradient(const SkPoint& start, SkScalar startRadius, | 16 SkTwoPointRadialGradient(const SkPoint& start, SkScalar startRadius, |
17 const SkPoint& end, SkScalar endRadius, | 17 const SkPoint& end, SkScalar endRadius, |
18 const Descriptor&, const SkMatrix* localMatrix); | 18 const Descriptor&, const SkMatrix* localMatrix); |
19 | 19 |
20 virtual BitmapType asABitmap(SkBitmap* bitmap, | 20 virtual BitmapType asABitmap(SkBitmap* bitmap, |
21 SkMatrix* matrix, | 21 SkMatrix* matrix, |
22 TileMode* xy) const SK_OVERRIDE; | 22 TileMode* xy) const SK_OVERRIDE; |
23 virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE; | 23 virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE; |
24 virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&) const S
K_OVERRIDE; | 24 virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&) const S
K_OVERRIDE; |
25 | 25 |
26 virtual size_t contextSize() const SK_OVERRIDE; | 26 virtual size_t contextSize() const SK_OVERRIDE; |
27 virtual bool validContext(const ContextRec&, SkMatrix* totalInverse) const S
K_OVERRIDE; | |
28 virtual SkShader::Context* createContext(const ContextRec&, void* storage) c
onst SK_OVERRIDE; | |
29 | 27 |
30 class TwoPointRadialGradientContext : public SkGradientShaderBase::GradientS
haderBaseContext { | 28 class TwoPointRadialGradientContext : public SkGradientShaderBase::GradientS
haderBaseContext { |
31 public: | 29 public: |
32 TwoPointRadialGradientContext(const SkTwoPointRadialGradient&, const Con
textRec&); | 30 TwoPointRadialGradientContext(const SkTwoPointRadialGradient&, const Con
textRec&); |
33 | 31 |
34 virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVE
RRIDE; | 32 virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVE
RRIDE; |
35 | 33 |
36 private: | 34 private: |
37 typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; | 35 typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; |
38 }; | 36 }; |
39 | 37 |
40 SkScalar getCenterX1() const { return fDiff.length(); } | 38 SkScalar getCenterX1() const { return fDiff.length(); } |
41 SkScalar getStartRadius() const { return fStartRadius; } | 39 SkScalar getStartRadius() const { return fStartRadius; } |
42 SkScalar getDiffRadius() const { return fDiffRadius; } | 40 SkScalar getDiffRadius() const { return fDiffRadius; } |
43 | 41 |
44 SK_TO_STRING_OVERRIDE() | 42 SK_TO_STRING_OVERRIDE() |
45 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointRadialGradient
) | 43 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointRadialGradient
) |
46 | 44 |
47 protected: | 45 protected: |
48 SkTwoPointRadialGradient(SkReadBuffer& buffer); | 46 SkTwoPointRadialGradient(SkReadBuffer& buffer); |
49 virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE; | 47 virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE; |
| 48 virtual Context* onCreateContext(const ContextRec&, void* storage) const SK_
OVERRIDE; |
50 | 49 |
51 private: | 50 private: |
52 const SkPoint fCenter1; | 51 const SkPoint fCenter1; |
53 const SkPoint fCenter2; | 52 const SkPoint fCenter2; |
54 const SkScalar fRadius1; | 53 const SkScalar fRadius1; |
55 const SkScalar fRadius2; | 54 const SkScalar fRadius2; |
56 SkPoint fDiff; | 55 SkPoint fDiff; |
57 SkScalar fStartRadius, fDiffRadius, fSr2D2, fA, fOneOverTwoA; | 56 SkScalar fStartRadius, fDiffRadius, fSr2D2, fA, fOneOverTwoA; |
58 | 57 |
59 void init(); | 58 void init(); |
60 | 59 |
61 typedef SkGradientShaderBase INHERITED; | 60 typedef SkGradientShaderBase INHERITED; |
62 }; | 61 }; |
63 | 62 |
64 #endif | 63 #endif |
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