src/third_party/skia/src/gpu/GrOvalRenderer.h

   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 GrOvalRenderer_DEFINED
   9 #define GrOvalRenderer_DEFINED
  10
  11 #include "GrContext.h"
  12 #include "GrPaint.h"
  13
  14 class GrContext;
  15 class GrDrawTarget;
  16 class GrPaint;
  17 struct SkRect;
  18 class SkStrokeRec;
  19
  20 /*
  21  * This class wraps helper functions that draw ovals and roundrects (filled & stroked)
  22  */
  23 class GrOvalRenderer : public SkRefCnt {
  24 public:
  25     SK_DECLARE_INST_COUNT(GrOvalRenderer)
  26
  27     GrOvalRenderer() : fRRectIndexBuffer(NULL), fStrokeRRectIndexBuffer(NULL) {}
  28     ~GrOvalRenderer() {
  29         this->reset();
  30     }
  31
  32     void reset();
  33
  34     bool drawOval(GrDrawTarget* target, const GrContext* context, bool useAA,
  35                   const SkRect& oval, const SkStrokeRec& stroke);
  36     bool drawRRect(GrDrawTarget* target, GrContext* context, bool useAA,
  37                    const SkRRect& rrect, const SkStrokeRec& stroke);
  38     bool drawDRRect(GrDrawTarget* target, GrContext* context, bool useAA,
  39                     const SkRRect& outer, const SkRRect& inner);
  40
  41 private:
  42     bool drawEllipse(GrDrawTarget* target, const GrContext* context, bool useCoverageAA,
  43                      const SkRect& ellipse,
  44                      const SkStrokeRec& stroke);
  45     bool drawDIEllipse(GrDrawTarget* target, const GrContext* context, bool useCoverageAA,
  46                        const SkRect& ellipse,
  47                        const SkStrokeRec& stroke);
  48     void drawCircle(GrDrawTarget* target, const GrContext* context, bool useCoverageAA,
  49                     const SkRect& circle,
  50                     const SkStrokeRec& stroke);
  51
  52     GrIndexBuffer* rRectIndexBuffer(bool isStrokeOnly, GrGpu* gpu);
  53
  54     GrIndexBuffer* fRRectIndexBuffer;
  55     GrIndexBuffer* fStrokeRRectIndexBuffer;
  56
  57     typedef SkRefCnt INHERITED;
  58 };
  59
  60 #endif // GrOvalRenderer_DEFINED