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| 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 SkTwoPointRadialGradient_DEFINED | |
| 10 #define SkTwoPointRadialGradient_DEFINED | |
| 11 | |
| 12 #include "SkGradientShaderPriv.h" | |
| 13 | |
| 14 class SkTwoPointRadialGradient : public SkGradientShaderBase { | |
| 15 public: | |
| 16 SkTwoPointRadialGradient(const SkPoint& start, SkScalar startRadius, | |
| 17 const SkPoint& end, SkScalar endRadius, | |
| 18 const Descriptor&); | |
| 19 | |
| 20 virtual BitmapType asABitmap(SkBitmap* bitmap, | |
| 21 SkMatrix* matrix, | |
| 22 TileMode* xy) const override; | |
| 23 GradientType asAGradient(GradientInfo* info) const override; | |
| 24 virtual bool asFragmentProcessor(GrContext* context, const SkPaint&, const S
kMatrix& viewM, | |
| 25 const SkMatrix*, GrColor*, | |
| 26 GrFragmentProcessor**) const override; | |
| 27 | |
| 28 size_t contextSize() const override; | |
| 29 | |
| 30 class TwoPointRadialGradientContext : public SkGradientShaderBase::GradientS
haderBaseContext { | |
| 31 public: | |
| 32 TwoPointRadialGradientContext(const SkTwoPointRadialGradient&, const Con
textRec&); | |
| 33 | |
| 34 void shadeSpan(int x, int y, SkPMColor dstC[], int count) override; | |
| 35 | |
| 36 private: | |
| 37 typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; | |
| 38 }; | |
| 39 | |
| 40 SkScalar getCenterX1() const { return fDiff.length(); } | |
| 41 SkScalar getStartRadius() const { return fStartRadius; } | |
| 42 SkScalar getDiffRadius() const { return fDiffRadius; } | |
| 43 | |
| 44 SK_TO_STRING_OVERRIDE() | |
| 45 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointRadialGradient
) | |
| 46 | |
| 47 protected: | |
| 48 SkTwoPointRadialGradient(SkReadBuffer& buffer); | |
| 49 void flatten(SkWriteBuffer& buffer) const override; | |
| 50 Context* onCreateContext(const ContextRec&, void* storage) const override; | |
| 51 | |
| 52 private: | |
| 53 const SkPoint fCenter1; | |
| 54 const SkPoint fCenter2; | |
| 55 const SkScalar fRadius1; | |
| 56 const SkScalar fRadius2; | |
| 57 SkPoint fDiff; | |
| 58 SkScalar fStartRadius, fDiffRadius, fSr2D2, fA, fOneOverTwoA; | |
| 59 | |
| 60 friend class SkGradientShader; | |
| 61 typedef SkGradientShaderBase INHERITED; | |
| 62 }; | |
| 63 | |
| 64 #endif | |
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