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| 1 /* | |
| 2 * Copyright 2013 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 GrEllipseEdgeEffect_DEFINED | |
| 9 #define GrEllipseEdgeEffect_DEFINED | |
| 10 | |
| 11 #include "GrEffect.h" | |
| 12 | |
| 13 class GrGLEllipseEdgeEffect; | |
| 14 | |
| 15 /** | |
| 16 * The output of this effect is a modulation of the input color and coverage for
an axis-aligned | |
| 17 * ellipse, specified as center_x, center_y, x_radius, x_radius/y_radius in wind
ow space (y-down). | |
| 18 */ | |
| 19 | |
| 20 class GrEllipseEdgeEffect : public GrEffect { | |
| 21 public: | |
| 22 static GrEffectRef* Create(bool stroke) { | |
| 23 // we go through this so we only have one copy of each effect (stroked/f
illed) | |
| 24 static SkAutoTUnref<GrEffectRef> gEllipseStrokeEdgeEffectRef( | |
| 25 CreateEffectRef(AutoEffectUnref(SkNEW_ARGS(GrEllipseEdge
Effect, (true))))); | |
| 26 static SkAutoTUnref<GrEffectRef> gEllipseFillEdgeEffectRef( | |
| 27 CreateEffectRef(AutoEffectUnref(SkNEW_ARGS(GrEllipseEdge
Effect, (false))))); | |
| 28 | |
| 29 if (stroke) { | |
| 30 gEllipseStrokeEdgeEffectRef.get()->ref(); | |
| 31 return gEllipseStrokeEdgeEffectRef; | |
| 32 } else { | |
| 33 gEllipseFillEdgeEffectRef.get()->ref(); | |
| 34 return gEllipseFillEdgeEffectRef; | |
| 35 } | |
| 36 } | |
| 37 | |
| 38 virtual ~GrEllipseEdgeEffect() {} | |
| 39 | |
| 40 static const char* Name() { return "EllipseEdge"; } | |
| 41 | |
| 42 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | |
| 43 | |
| 44 typedef GrGLEllipseEdgeEffect GLEffect; | |
| 45 | |
| 46 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | |
| 47 | |
| 48 inline bool isStroked() const { return fStroke; } | |
| 49 | |
| 50 private: | |
| 51 GrEllipseEdgeEffect(bool stroke); | |
| 52 | |
| 53 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE { | |
| 54 const GrEllipseEdgeEffect& eee = CastEffect<GrEllipseEdgeEffect>(other); | |
| 55 return eee.fStroke == fStroke; | |
| 56 } | |
| 57 | |
| 58 bool fStroke; | |
| 59 | |
| 60 GR_DECLARE_EFFECT_TEST; | |
| 61 | |
| 62 typedef GrEffect INHERITED; | |
| 63 }; | |
| 64 | |
| 65 #endif | |
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Chromium Code Reviews
Issue 13344002:
Move edge GrEffects to locally defined classes (Closed)
Base URL: http://skia.googlecode.com/svn/trunk/