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Side by Side Diff: content/browser/renderer_host/input/synthetic_smooth_scroll_gesture.cc

Issue 62443007: Replace old with new synthetic gesture framework. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Forward declare SyntheticGestureController. Created 7 years, 1 month ago
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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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