| |
| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkTwoPointRadialGradient_DEFINED |
| #define SkTwoPointRadialGradient_DEFINED |
| |
| #include "SkGradientShaderPriv.h" |
| |
| class SkTwoPointRadialGradient : public SkGradientShaderBase { |
| public: |
| SkTwoPointRadialGradient(const SkPoint& start, SkScalar startRadius, |
| const SkPoint& end, SkScalar endRadius, |
| const Descriptor&, const SkMatrix* localMatrix); |
| |
| virtual BitmapType asABitmap(SkBitmap* bitmap, |
| SkMatrix* matrix, |
| TileMode* xy) const SK_OVERRIDE; |
| virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE; |
| virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint&, |
| const SkMatrix*) const SK_OVERRIDE; |
| |
| virtual size_t contextSize() const SK_OVERRIDE; |
| |
| class TwoPointRadialGradientContext : public SkGradientShaderBase::GradientShaderBaseContext { |
| public: |
| TwoPointRadialGradientContext(const SkTwoPointRadialGradient&, const ContextRec&); |
| |
| virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVERRIDE; |
| |
| private: |
| typedef SkGradientShaderBase::GradientShaderBaseContext INHERITED; |
| }; |
| |
| SkScalar getCenterX1() const { return fDiff.length(); } |
| SkScalar getStartRadius() const { return fStartRadius; } |
| SkScalar getDiffRadius() const { return fDiffRadius; } |
| |
| SK_TO_STRING_OVERRIDE() |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkTwoPointRadialGradient) |
| |
| protected: |
| SkTwoPointRadialGradient(SkReadBuffer& buffer); |
| virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE; |
| virtual Context* onCreateContext(const ContextRec&, void* storage) const SK_OVERRIDE; |
| |
| private: |
| const SkPoint fCenter1; |
| const SkPoint fCenter2; |
| const SkScalar fRadius1; |
| const SkScalar fRadius2; |
| SkPoint fDiff; |
| SkScalar fStartRadius, fDiffRadius, fSr2D2, fA, fOneOverTwoA; |
| |
| void init(); |
| |
| typedef SkGradientShaderBase INHERITED; |
| }; |
| |
| #endif |