2 * Copyright 2014 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef SkNoSaveLayerCanvas_DEFINED
9 #define SkNoSaveLayerCanvas_DEFINED
14 // The NoSaveLayerCanvas is used to play back SkPictures when the saveLayer
15 // functionality isn't required (e.g., during analysis of the draw calls).
16 // It also simplifies the clipping calls to only use rectangles.
17 class SK_API SkNoSaveLayerCanvas : public SkCanvas {
19 SkNoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {}
22 virtual SaveLayerStrategy willSaveLayer(const SkRect* bounds, const SkPaint* paint,
23 SaveFlags flags) SK_OVERRIDE {
24 this->INHERITED::willSaveLayer(bounds, paint, flags);
25 return kNoLayer_SaveLayerStrategy;
28 // disable aa for speed
29 virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
30 this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle);
33 // for speed, just respect the bounds, and disable AA. May give us a few
34 // false positives and negatives.
35 virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
36 this->updateClipConservativelyUsingBounds(path.getBounds(), op,
37 path.isInverseFillType());
39 virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyle) SK_OVERRIDE {
40 this->updateClipConservativelyUsingBounds(rrect.getBounds(), op, false);
44 typedef SkCanvas INHERITED;
47 #endif // SkNoSaveLayerCanvas_DEFINED