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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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_LAYERS_VIEWPORT_H_ | 5 #ifndef CC_LAYERS_VIEWPORT_H_ |
6 #define CC_LAYERS_VIEWPORT_H_ | 6 #define CC_LAYERS_VIEWPORT_H_ |
7 | 7 |
| 8 #include "base/macros.h" |
8 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
9 #include "cc/layers/layer_impl.h" | 10 #include "cc/layers/layer_impl.h" |
10 #include "ui/gfx/geometry/vector2d_f.h" | 11 #include "ui/gfx/geometry/vector2d_f.h" |
11 | 12 |
12 namespace cc { | 13 namespace cc { |
13 | 14 |
14 class LayerTreeHostImpl; | 15 class LayerTreeHostImpl; |
15 | 16 |
16 // Encapsulates gesture handling logic on the viewport layers. The "viewport" | 17 // Encapsulates gesture handling logic on the viewport layers. The "viewport" |
17 // is made up of two scrolling layers, the inner viewport (visual) and the | 18 // is made up of two scrolling layers, the inner viewport (visual) and the |
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72 // The pinch zoom anchor point is adjusted by this amount during a pinch. This | 73 // The pinch zoom anchor point is adjusted by this amount during a pinch. This |
73 // is used to "snap" a pinch-zoom to the edge of the screen. | 74 // is used to "snap" a pinch-zoom to the edge of the screen. |
74 gfx::Vector2d pinch_anchor_adjustment_; | 75 gfx::Vector2d pinch_anchor_adjustment_; |
75 | 76 |
76 DISALLOW_COPY_AND_ASSIGN(Viewport); | 77 DISALLOW_COPY_AND_ASSIGN(Viewport); |
77 }; | 78 }; |
78 | 79 |
79 } // namespace cc | 80 } // namespace cc |
80 | 81 |
81 #endif // CC_LAYERS_VIEWPORT_H_ | 82 #endif // CC_LAYERS_VIEWPORT_H_ |
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