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 /*

  * Copyright 2014 Google Inc.

  *

  * Use of this source code is governed by a BSD-style license that can be

  * found in the LICENSE file.

  */

 #ifndef SkNoSaveLayerCanvas_DEFINED

 #define SkNoSaveLayerCanvas_DEFINED

 #include "SkCanvas.h"

 #include "SkRRect.h"

 // The NoSaveLayerCanvas is used to play back SkPictures when the saveLayer

 // functionality isn't required (e.g., during analysis of the draw calls).

 // It also simplifies the clipping calls to only use rectangles.

 class SK_API SkNoSaveLayerCanvas : public SkCanvas {

 public:

     SkNoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {}

 protected:

     virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint,

                                             SaveFlags flags) SK_OVERRIDE {

         this->INHERITED::willSaveLayer(bounds, paint, flags);

         return kNoLayer_SaveLayerStrategy;

     }

     // disable aa for speed

     virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {

         this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle);

     }

     // for speed, just respect the bounds, and disable AA. May give us a few

     // false positives and negatives.

     virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {

         this->updateClipConservativelyUsingBounds(path.getBounds(), op,

                                                   path.isInverseFillType());

     }

     virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {

         this->updateClipConservativelyUsingBounds(rrect.getBounds(), op, false);

     }

 private:

     typedef SkCanvas INHERITED;

 };

 #endif // SkNoSaveLayerCanvas_DEFINED