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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #include "content/browser/renderer_host/input/synthetic_smooth_scroll_gesture_ne
w.h" | 5 #include "content/browser/renderer_host/input/synthetic_smooth_scroll_gesture.h" |
6 | 6 |
7 #include <cmath> | 7 #include <cmath> |
8 | 8 |
9 #include "content/common/input/input_event.h" | 9 #include "content/common/input/input_event.h" |
10 #include "ui/events/latency_info.h" | 10 #include "ui/events/latency_info.h" |
11 | 11 |
12 namespace content { | 12 namespace content { |
13 | 13 |
14 SyntheticSmoothScrollGestureNew::SyntheticSmoothScrollGestureNew( | 14 SyntheticSmoothScrollGesture::SyntheticSmoothScrollGesture( |
15 const SyntheticSmoothScrollGestureParams& params) | 15 const SyntheticSmoothScrollGestureParams& params) |
16 : params_(params), | 16 : params_(params), current_y_(params_.anchor.y()) {} |
17 current_y_(params_.anchor.y()) {} | |
18 | 17 |
19 SyntheticSmoothScrollGestureNew::~SyntheticSmoothScrollGestureNew() {} | 18 SyntheticSmoothScrollGesture::~SyntheticSmoothScrollGesture() {} |
20 | 19 |
21 SyntheticGestureNew::Result SyntheticSmoothScrollGestureNew::ForwardInputEvents( | 20 SyntheticGesture::Result SyntheticSmoothScrollGesture::ForwardInputEvents( |
22 const base::TimeDelta& interval, SyntheticGestureTarget* target) { | 21 const base::TimeDelta& interval, SyntheticGestureTarget* target) { |
23 | 22 |
24 SyntheticGestureParams::GestureSourceType source = | 23 SyntheticGestureParams::GestureSourceType source = |
25 params_.gesture_source_type; | 24 params_.gesture_source_type; |
26 if (source == SyntheticGestureParams::DEFAULT_INPUT) | 25 if (source == SyntheticGestureParams::DEFAULT_INPUT) |
27 source = target->GetDefaultSyntheticGestureSourceType(); | 26 source = target->GetDefaultSyntheticGestureSourceType(); |
28 | 27 |
29 if (!target->SupportsSyntheticGestureSourceType(source)) | 28 if (!target->SupportsSyntheticGestureSourceType(source)) |
30 return SyntheticGestureNew::GESTURE_SOURCE_TYPE_NOT_SUPPORTED_BY_PLATFORM; | 29 return SyntheticGesture::GESTURE_SOURCE_TYPE_NOT_SUPPORTED_BY_PLATFORM; |
31 | 30 |
32 if (source == SyntheticGestureParams::TOUCH_INPUT) | 31 if (source == SyntheticGestureParams::TOUCH_INPUT) |
33 return ForwardTouchInputEvents(interval, target); | 32 return ForwardTouchInputEvents(interval, target); |
34 else if (source == SyntheticGestureParams::MOUSE_INPUT) | 33 else if (source == SyntheticGestureParams::MOUSE_INPUT) |
35 return ForwardMouseInputEvents(interval, target); | 34 return ForwardMouseInputEvents(interval, target); |
36 else | 35 else |
37 return SyntheticGestureNew::GESTURE_SOURCE_TYPE_NOT_IMPLEMENTED; | 36 return SyntheticGesture::GESTURE_SOURCE_TYPE_NOT_IMPLEMENTED; |
38 } | 37 } |
39 | 38 |
40 SyntheticGestureNew::Result | 39 SyntheticGesture::Result SyntheticSmoothScrollGesture::ForwardTouchInputEvents( |
41 SyntheticSmoothScrollGestureNew::ForwardTouchInputEvents( | |
42 const base::TimeDelta& interval, SyntheticGestureTarget* target) { | 40 const base::TimeDelta& interval, SyntheticGestureTarget* target) { |
43 if (HasFinished()) | 41 if (HasFinished()) |
44 return SyntheticGestureNew::GESTURE_FINISHED; | 42 return SyntheticGesture::GESTURE_FINISHED; |
45 | 43 |
46 if (current_y_ == params_.anchor.y()) { | 44 if (current_y_ == params_.anchor.y()) { |
47 touch_event_.PressPoint(params_.anchor.x(), current_y_); | 45 touch_event_.PressPoint(params_.anchor.x(), current_y_); |
48 ForwardTouchEvent(target); | 46 ForwardTouchEvent(target); |
49 } | 47 } |
50 | 48 |
51 current_y_ += GetPositionDelta(interval); | 49 current_y_ += GetPositionDelta(interval); |
52 touch_event_.MovePoint(0, params_.anchor.x(), current_y_); | 50 touch_event_.MovePoint(0, params_.anchor.x(), current_y_); |
53 ForwardTouchEvent(target); | 51 ForwardTouchEvent(target); |
54 | 52 |
55 if (HasFinished()) { | 53 if (HasFinished()) { |
56 touch_event_.ReleasePoint(0); | 54 touch_event_.ReleasePoint(0); |
57 ForwardTouchEvent(target); | 55 ForwardTouchEvent(target); |
58 return SyntheticGestureNew::GESTURE_FINISHED; | 56 return SyntheticGesture::GESTURE_FINISHED; |
59 } | 57 } |
60 else { | 58 |
61 return SyntheticGestureNew::GESTURE_RUNNING; | 59 return SyntheticGesture::GESTURE_RUNNING; |
62 } | |
63 } | 60 } |
64 | 61 |
65 SyntheticGestureNew::Result | 62 SyntheticGesture::Result SyntheticSmoothScrollGesture::ForwardMouseInputEvents( |
66 SyntheticSmoothScrollGestureNew::ForwardMouseInputEvents( | |
67 const base::TimeDelta& interval, SyntheticGestureTarget* target) { | 63 const base::TimeDelta& interval, SyntheticGestureTarget* target) { |
68 if (HasFinished()) | 64 if (HasFinished()) |
69 return SyntheticGestureNew::GESTURE_FINISHED; | 65 return SyntheticGesture::GESTURE_FINISHED; |
70 | 66 |
71 float delta = GetPositionDelta(interval); | 67 float delta = GetPositionDelta(interval); |
72 current_y_ += delta; | 68 current_y_ += delta; |
73 ForwardMouseWheelEvent(target, delta); | 69 ForwardMouseWheelEvent(target, delta); |
74 | 70 |
75 if (HasFinished()) | 71 if (HasFinished()) |
76 return SyntheticGestureNew::GESTURE_FINISHED; | 72 return SyntheticGesture::GESTURE_FINISHED; |
77 else | 73 |
78 return SyntheticGestureNew::GESTURE_RUNNING; | 74 return SyntheticGesture::GESTURE_RUNNING; |
79 } | 75 } |
80 | 76 |
81 void SyntheticSmoothScrollGestureNew::ForwardTouchEvent( | 77 void SyntheticSmoothScrollGesture::ForwardTouchEvent( |
82 SyntheticGestureTarget* target) { | 78 SyntheticGestureTarget* target) { |
83 target->DispatchInputEventToPlatform( | 79 target->DispatchInputEventToPlatform( |
84 InputEvent(touch_event_, ui::LatencyInfo(), false)); | 80 InputEvent(touch_event_, ui::LatencyInfo(), false)); |
85 } | 81 } |
86 | 82 |
87 void SyntheticSmoothScrollGestureNew::ForwardMouseWheelEvent( | 83 void SyntheticSmoothScrollGesture::ForwardMouseWheelEvent( |
88 SyntheticGestureTarget* target, | 84 SyntheticGestureTarget* target, float delta) { |
89 float delta) { | |
90 blink::WebMouseWheelEvent mouse_wheel_event = | 85 blink::WebMouseWheelEvent mouse_wheel_event = |
91 SyntheticWebMouseWheelEventBuilder::Build(0, delta, 0, false); | 86 SyntheticWebMouseWheelEventBuilder::Build(0, delta, 0, false); |
92 | 87 |
93 target->DispatchInputEventToPlatform( | 88 target->DispatchInputEventToPlatform( |
94 InputEvent(mouse_wheel_event, ui::LatencyInfo(), false)); | 89 InputEvent(mouse_wheel_event, ui::LatencyInfo(), false)); |
95 } | 90 } |
96 | 91 |
97 float SyntheticSmoothScrollGestureNew::GetPositionDelta( | 92 float SyntheticSmoothScrollGesture::GetPositionDelta( |
98 const base::TimeDelta& interval) { | 93 const base::TimeDelta& interval) { |
99 float delta = params_.speed_in_pixels_s * interval.InSecondsF(); | 94 float delta = params_.speed_in_pixels_s * interval.InSecondsF(); |
100 // A positive value indicates scrolling down, which means the touch pointer | 95 // A positive value indicates scrolling down, which means the touch pointer |
101 // moves up or the scroll wheel moves down. In either case, the delta is | 96 // moves up or the scroll wheel moves down. In either case, the delta is |
102 // negative when scrolling down and positive when scrolling up. | 97 // negative when scrolling down and positive when scrolling up. |
103 return (params_.distance > 0) ? -delta : delta; | 98 return (params_.distance > 0) ? -delta : delta; |
104 } | 99 } |
105 | 100 |
106 bool SyntheticSmoothScrollGestureNew::HasFinished() { | 101 bool SyntheticSmoothScrollGesture::HasFinished() { |
107 return abs(current_y_ - params_.anchor.y()) >= abs(params_.distance); | 102 return abs(current_y_ - params_.anchor.y()) >= abs(params_.distance); |
108 } | 103 } |
109 | 104 |
110 } // namespace content | 105 } // namespace content |
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