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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CC_BLINK_WEB_LAYER_IMPL_FIXED_BOUNDS_H_ | 5 #ifndef CC_BLINK_WEB_LAYER_IMPL_FIXED_BOUNDS_H_ |
6 #define CC_BLINK_WEB_LAYER_IMPL_FIXED_BOUNDS_H_ | 6 #define CC_BLINK_WEB_LAYER_IMPL_FIXED_BOUNDS_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "cc/blink/web_layer_impl.h" | 9 #include "cc/blink/web_layer_impl.h" |
10 #include "ui/gfx/geometry/size.h" | 10 #include "ui/gfx/geometry/size.h" |
11 #include "ui/gfx/transform.h" | 11 #include "ui/gfx/transform.h" |
12 | 12 |
13 namespace cc_blink { | 13 namespace cc_blink { |
14 | 14 |
15 // A special implementation of WebLayerImpl for layers that its contents | 15 // A special implementation of WebLayerImpl for layers that its contents |
16 // need to be automatically scaled when the bounds changes. The compositor | 16 // need to be automatically scaled when the bounds changes. The compositor |
17 // can efficiently handle the bounds change of such layers if the bounds | 17 // can efficiently handle the bounds change of such layers if the bounds |
18 // is fixed to a given value and the change of bounds are converted to | 18 // is fixed to a given value and the change of bounds are converted to |
19 // transformation scales. | 19 // transformation scales. |
20 class WebLayerImplFixedBounds : public WebLayerImpl { | 20 class CC_BLINK_EXPORT WebLayerImplFixedBounds : public WebLayerImpl { |
21 public: | 21 public: |
22 CC_BLINK_EXPORT WebLayerImplFixedBounds(); | 22 WebLayerImplFixedBounds(); |
23 CC_BLINK_EXPORT explicit WebLayerImplFixedBounds( | 23 explicit WebLayerImplFixedBounds(scoped_refptr<cc::Layer> layer); |
24 scoped_refptr<cc::Layer> layer); | |
25 ~WebLayerImplFixedBounds() override; | 24 ~WebLayerImplFixedBounds() override; |
26 | 25 |
27 // WebLayerImpl overrides. | 26 // WebLayerImpl overrides. |
28 void invalidateRect(const blink::WebRect& rect) override; | 27 void invalidateRect(const blink::WebRect& rect) override; |
29 void setTransformOrigin( | 28 void setTransformOrigin( |
30 const blink::WebFloatPoint3D& transform_origin) override; | 29 const blink::WebFloatPoint3D& transform_origin) override; |
31 void setBounds(const blink::WebSize& bounds) override; | 30 void setBounds(const blink::WebSize& bounds) override; |
32 blink::WebSize bounds() const override; | 31 blink::WebSize bounds() const override; |
33 void setTransform(const SkMatrix44& transform) override; | 32 void setTransform(const SkMatrix44& transform) override; |
34 SkMatrix44 transform() const override; | 33 SkMatrix44 transform() const override; |
35 | 34 |
36 CC_BLINK_EXPORT void SetFixedBounds(gfx::Size bounds); | 35 void SetFixedBounds(gfx::Size bounds); |
37 | 36 |
38 protected: | 37 protected: |
39 void SetTransformInternal(const gfx::Transform& transform); | 38 void SetTransformInternal(const gfx::Transform& transform); |
40 void UpdateLayerBoundsAndTransform(); | 39 void UpdateLayerBoundsAndTransform(); |
41 | 40 |
42 gfx::Transform original_transform_; | 41 gfx::Transform original_transform_; |
43 gfx::Size original_bounds_; | 42 gfx::Size original_bounds_; |
44 gfx::Size fixed_bounds_; | 43 gfx::Size fixed_bounds_; |
45 | 44 |
46 private: | 45 private: |
47 DISALLOW_COPY_AND_ASSIGN(WebLayerImplFixedBounds); | 46 DISALLOW_COPY_AND_ASSIGN(WebLayerImplFixedBounds); |
48 }; | 47 }; |
49 | 48 |
50 } // namespace cc_blink | 49 } // namespace cc_blink |
51 | 50 |
52 #endif // CC_BLINK_WEB_LAYER_IMPL_FIXED_BOUNDS_H_ | 51 #endif // CC_BLINK_WEB_LAYER_IMPL_FIXED_BOUNDS_H_ |
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