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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 CONTENT_RENDERER_INPUT_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_ | 5 #ifndef UI_EVENTS_BLINK_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_ |
6 #define CONTENT_RENDERER_INPUT_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_ | 6 #define UI_EVENTS_BLINK_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "base/memory/weak_ptr.h" | 9 #include "base/memory/weak_ptr.h" |
10 #include "cc/input/scroll_elasticity_helper.h" | 10 #include "cc/input/scroll_elasticity_helper.h" |
11 #include "content/common/content_export.h" | |
12 #include "third_party/WebKit/public/web/WebInputEvent.h" | 11 #include "third_party/WebKit/public/web/WebInputEvent.h" |
13 | 12 |
14 // InputScrollElasticityController is based on | 13 // InputScrollElasticityController is based on |
15 // WebKit/Source/platform/mac/ScrollElasticityController.h | 14 // WebKit/Source/platform/mac/ScrollElasticityController.h |
16 /* | 15 /* |
17 * Copyright (C) 2011 Apple Inc. All rights reserved. | 16 * Copyright (C) 2011 Apple Inc. All rights reserved. |
18 * | 17 * |
19 * Redistribution and use in source and binary forms, with or without | 18 * Redistribution and use in source and binary forms, with or without |
20 * modification, are permitted provided that the following conditions | 19 * modification, are permitted provided that the following conditions |
21 * are met: | 20 * are met: |
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35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
38 * THE POSSIBILITY OF SUCH DAMAGE. | 37 * THE POSSIBILITY OF SUCH DAMAGE. |
39 */ | 38 */ |
40 | 39 |
41 namespace cc { | 40 namespace cc { |
42 struct InputHandlerScrollResult; | 41 struct InputHandlerScrollResult; |
43 } // namespace cc | 42 } // namespace cc |
44 | 43 |
45 namespace content { | 44 namespace ui { |
46 | 45 |
47 class CONTENT_EXPORT InputScrollElasticityController { | 46 class InputScrollElasticityController { |
48 public: | 47 public: |
49 explicit InputScrollElasticityController(cc::ScrollElasticityHelper* helper); | 48 explicit InputScrollElasticityController(cc::ScrollElasticityHelper* helper); |
50 virtual ~InputScrollElasticityController(); | 49 virtual ~InputScrollElasticityController(); |
51 | 50 |
52 base::WeakPtr<InputScrollElasticityController> GetWeakPtr(); | 51 base::WeakPtr<InputScrollElasticityController> GetWeakPtr(); |
53 | 52 |
54 // Update the overscroll state based a wheel event that has been processed. | 53 // Update the overscroll state based a wheel event that has been processed. |
55 // Note that this assumes that all events are coming from a single input | 54 // Note that this assumes that all events are coming from a single input |
56 // device. If the user simultaneously uses multiple input devices, Cocoa may | 55 // device. If the user simultaneously uses multiple input devices, Cocoa may |
57 // not correctly pass all the gesture begin and end events. In this case, | 56 // not correctly pass all the gesture begin and end events. In this case, |
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136 // This is set in response to a scroll (most likely programmatic) occuring | 135 // This is set in response to a scroll (most likely programmatic) occuring |
137 // while animating the momentum phase. In this case, re-set the initial | 136 // while animating the momentum phase. In this case, re-set the initial |
138 // velocity, stretch, and start time at the next frame (this is the same | 137 // velocity, stretch, and start time at the next frame (this is the same |
139 // behavior as would happen if the scroll were caused by an active scroll). | 138 // behavior as would happen if the scroll were caused by an active scroll). |
140 bool momentum_animation_reset_at_next_frame_; | 139 bool momentum_animation_reset_at_next_frame_; |
141 | 140 |
142 base::WeakPtrFactory<InputScrollElasticityController> weak_factory_; | 141 base::WeakPtrFactory<InputScrollElasticityController> weak_factory_; |
143 DISALLOW_COPY_AND_ASSIGN(InputScrollElasticityController); | 142 DISALLOW_COPY_AND_ASSIGN(InputScrollElasticityController); |
144 }; | 143 }; |
145 | 144 |
146 } // namespace content | 145 } // namespace ui |
147 | 146 |
148 #endif // CONTENT_RENDERER_INPUT_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_ | 147 #endif // UI_EVENTS_BLINK_INPUT_SCROLL_ELASTICITY_CONTROLLER_H_ |
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