michael@0: /*
michael@0:  * Copyright 2014 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkNoSaveLayerCanvas_DEFINED
michael@0: #define SkNoSaveLayerCanvas_DEFINED
michael@0: 
michael@0: #include "SkCanvas.h"
michael@0: #include "SkRRect.h"
michael@0: 
michael@0: // The NoSaveLayerCanvas is used to play back SkPictures when the saveLayer
michael@0: // functionality isn't required (e.g., during analysis of the draw calls).
michael@0: // It also simplifies the clipping calls to only use rectangles.
michael@0: class SK_API SkNoSaveLayerCanvas : public SkCanvas {
michael@0: public:
michael@0:     SkNoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {}
michael@0: 
michael@0: protected:
michael@0:     virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint,
michael@0:                                             SaveFlags flags) SK_OVERRIDE {
michael@0:         this->INHERITED::willSaveLayer(bounds, paint, flags);
michael@0:         return kNoLayer_SaveLayerStrategy;
michael@0:     }
michael@0: 
michael@0:     // disable aa for speed
michael@0:     virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
michael@0:         this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle);
michael@0:     }
michael@0: 
michael@0:     // for speed, just respect the bounds, and disable AA. May give us a few
michael@0:     // false positives and negatives.
michael@0:     virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
michael@0:         this->updateClipConservativelyUsingBounds(path.getBounds(), op,
michael@0:                                                   path.isInverseFillType());
michael@0:     }
michael@0:     virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
michael@0:         this->updateClipConservativelyUsingBounds(rrect.getBounds(), op, false);
michael@0:     }
michael@0: 
michael@0: private:
michael@0:     typedef SkCanvas INHERITED;
michael@0: };
michael@0: 
michael@0: #endif // SkNoSaveLayerCanvas_DEFINED