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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CC_PLAYBACK_IMAGE_HIJACK_CANVAS_H_ | |
| 6 #define CC_PLAYBACK_IMAGE_HIJACK_CANVAS_H_ | |
| 7 | |
| 8 #include <unordered_set> | |
| 9 | |
| 10 #include "base/macros.h" | |
| 11 #include "cc/base/cc_export.h" | |
| 12 #include "cc/playback/image_id.h" | |
| 13 #include "third_party/skia/include/utils/SkNWayCanvas.h" | |
| 14 | |
| 15 namespace cc { | |
| 16 | |
| 17 class ImageDecodeCache; | |
| 18 | |
| 19 class CC_EXPORT ImageHijackCanvas : public SkNWayCanvas { | |
| 20 public: | |
| 21 ImageHijackCanvas(int width, | |
| 22 int height, | |
| 23 ImageDecodeCache* image_decode_cache, | |
| 24 const ImageIdFlatSet* images_to_skip); | |
| 25 | |
| 26 private: | |
| 27 // Ensure that pictures are unpacked by this canvas, instead of being | |
| 28 // forwarded to the raster canvas. | |
| 29 void onDrawPicture(const SkPicture* picture, | |
| 30 const SkMatrix* matrix, | |
| 31 const SkPaint* paint) override; | |
| 32 void onDrawImage(const SkImage* image, | |
| 33 SkScalar x, | |
| 34 SkScalar y, | |
| 35 const SkPaint* paint) override; | |
| 36 void onDrawImageRect(const SkImage* image, | |
| 37 const SkRect* src, | |
| 38 const SkRect& dst, | |
| 39 const SkPaint* paint, | |
| 40 SrcRectConstraint constraint) override; | |
| 41 void onDrawRect(const SkRect&, const SkPaint&) override; | |
| 42 void onDrawPath(const SkPath& path, const SkPaint& paint) override; | |
| 43 void onDrawOval(const SkRect& r, const SkPaint& paint) override; | |
| 44 void onDrawArc(const SkRect& r, | |
| 45 SkScalar start_angle, | |
| 46 SkScalar sweep_angle, | |
| 47 bool use_center, | |
| 48 const SkPaint& paint) override; | |
| 49 void onDrawRRect(const SkRRect& rr, const SkPaint& paint) override; | |
| 50 void onDrawImageNine(const SkImage* image, | |
| 51 const SkIRect& center, | |
| 52 const SkRect& dst, | |
| 53 const SkPaint* paint) override; | |
| 54 | |
| 55 bool ShouldSkipImage(const SkImage* image) const; | |
| 56 bool ShouldSkipImageInPaint(const SkPaint& paint) const; | |
| 57 | |
| 58 ImageDecodeCache* image_decode_cache_; | |
| 59 const ImageIdFlatSet* images_to_skip_; | |
| 60 | |
| 61 DISALLOW_COPY_AND_ASSIGN(ImageHijackCanvas); | |
| 62 }; | |
| 63 | |
| 64 } // namespace cc | |
| 65 | |
| 66 #endif // CC_PLAYBACK_IMAGE_HIJACK_CANVAS_H_ | |
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