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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkNoSaveLayerCanvas_DEFINED | 8 #ifndef SkNoSaveLayerCanvas_DEFINED |
9 #define SkNoSaveLayerCanvas_DEFINED | 9 #define SkNoSaveLayerCanvas_DEFINED |
10 | 10 |
11 #include "SkCanvas.h" | 11 #include "SkCanvas.h" |
12 #include "SkRRect.h" | 12 #include "SkRRect.h" |
13 | 13 |
14 // The NoSaveLayerCanvas is used to play back SkPictures when the saveLayer | 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). | 15 // functionality isn't required (e.g., during analysis of the draw calls). |
16 // It also simplifies the clipping calls to only use rectangles. | 16 // It also simplifies the clipping calls to only use rectangles. |
17 class SkNoSaveLayerCanvas : public SkCanvas { | 17 class SkNoSaveLayerCanvas : public SkCanvas { |
18 public: | 18 public: |
19 SkNoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {} | 19 SkNoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {} |
20 | 20 |
21 protected: | 21 // turn saveLayer() into save() for speed, should not affect correctness. |
22 virtual bool onSaveLayer(const SkRect* bounds, const SkPaint* paint, SaveFla
gs flags) | 22 virtual int saveLayer(const SkRect* bounds, |
23 SK_OVERRIDE { | 23 const SkPaint* paint, |
24 this->INHERITED::onSaveLayer(bounds, paint, flags); | 24 SaveFlags flags) SK_OVERRIDE { |
25 return false; | 25 |
| 26 // Like SkPictureRecord, we don't want to create layers, but we do need |
| 27 // to respect the save and (possibly) its rect-clip. |
| 28 int count = this->INHERITED::save(flags); |
| 29 if (NULL != bounds) { |
| 30 this->INHERITED::clipRectBounds(bounds, flags, NULL); |
| 31 } |
| 32 return count; |
26 } | 33 } |
27 | 34 |
| 35 protected: |
28 // disable aa for speed | 36 // disable aa for speed |
29 virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle)
SK_OVERRIDE { | 37 virtual void onClipRect(const SkRect& rect, SkRegion::Op op, ClipEdgeStyle)
SK_OVERRIDE { |
30 this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle); | 38 this->INHERITED::onClipRect(rect, op, kHard_ClipEdgeStyle); |
31 } | 39 } |
32 | 40 |
33 // for speed, just respect the bounds, and disable AA. May give us a few | 41 // for speed, just respect the bounds, and disable AA. May give us a few |
34 // false positives and negatives. | 42 // false positives and negatives. |
35 virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle)
SK_OVERRIDE { | 43 virtual void onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle)
SK_OVERRIDE { |
36 this->updateClipConservativelyUsingBounds(path.getBounds(), op, | 44 this->updateClipConservativelyUsingBounds(path.getBounds(), op, |
37 path.isInverseFillType()); | 45 path.isInverseFillType()); |
38 } | 46 } |
39 virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyl
e) SK_OVERRIDE { | 47 virtual void onClipRRect(const SkRRect& rrect, SkRegion::Op op, ClipEdgeStyl
e) SK_OVERRIDE { |
40 this->updateClipConservativelyUsingBounds(rrect.getBounds(), op, false); | 48 this->updateClipConservativelyUsingBounds(rrect.getBounds(), op, false); |
41 } | 49 } |
42 | 50 |
43 private: | 51 private: |
44 typedef SkCanvas INHERITED; | 52 typedef SkCanvas INHERITED; |
45 }; | 53 }; |
46 | 54 |
47 #endif // SkNoSaveLayerCanvas_DEFINED | 55 #endif // SkNoSaveLayerCanvas_DEFINED |
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