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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/overscroll_controller.h" | 5 #include "content/browser/renderer_host/overscroll_controller.h" |
6 | 6 |
7 #include "content/browser/renderer_host/gesture_event_filter.h" | 7 #include "content/browser/renderer_host/gesture_event_filter.h" |
8 #include "content/browser/renderer_host/overscroll_controller_delegate.h" | 8 #include "content/browser/renderer_host/overscroll_controller_delegate.h" |
9 #include "content/browser/renderer_host/render_widget_host_impl.h" | 9 #include "content/browser/renderer_host/render_widget_host_impl.h" |
10 #include "content/public/browser/overscroll_configuration.h" | 10 #include "content/public/browser/overscroll_configuration.h" |
11 #include "content/public/browser/render_widget_host_view.h" | 11 #include "content/public/browser/render_widget_host_view.h" |
12 | 12 |
13 namespace content { | 13 namespace content { |
14 | 14 |
15 OverscrollController::OverscrollController( | 15 OverscrollController::OverscrollController( |
16 RenderWidgetHostImpl* render_widget_host) | 16 RenderWidgetHostImpl* render_widget_host) |
17 : render_widget_host_(render_widget_host), | 17 : render_widget_host_(render_widget_host), |
18 overscroll_mode_(OVERSCROLL_NONE), | 18 overscroll_mode_(OVERSCROLL_NONE), |
19 scroll_state_(STATE_UNKNOWN), | 19 scroll_state_(STATE_UNKNOWN), |
20 overscroll_delta_x_(0.f), | 20 overscroll_delta_x_(0.f), |
21 overscroll_delta_y_(0.f), | 21 overscroll_delta_y_(0.f), |
22 delegate_(NULL) { | 22 delegate_(NULL) { |
23 } | 23 } |
24 | 24 |
25 OverscrollController::~OverscrollController() { | 25 OverscrollController::~OverscrollController() { |
26 } | 26 } |
27 | 27 |
28 bool OverscrollController::WillDispatchEvent( | 28 bool OverscrollController::WillDispatchEvent( |
29 const WebKit::WebInputEvent& event, | 29 const WebKit::WebInputEvent& event, |
30 const cc::LatencyInfo& latency_info) { | 30 const ui::LatencyInfo& latency_info) { |
31 if (scroll_state_ != STATE_UNKNOWN) { | 31 if (scroll_state_ != STATE_UNKNOWN) { |
32 if (event.type == WebKit::WebInputEvent::GestureScrollEnd) { | 32 if (event.type == WebKit::WebInputEvent::GestureScrollEnd) { |
33 scroll_state_ = STATE_UNKNOWN; | 33 scroll_state_ = STATE_UNKNOWN; |
34 } else if (event.type == WebKit::WebInputEvent::GestureFlingStart) { | 34 } else if (event.type == WebKit::WebInputEvent::GestureFlingStart) { |
35 // Start of a fling indicates the end of a scroll, both from touchpad and | 35 // Start of a fling indicates the end of a scroll, both from touchpad and |
36 // touchscreen. So it is not necessary to check |sourceDevice| of the | 36 // touchscreen. So it is not necessary to check |sourceDevice| of the |
37 // event. | 37 // event. |
38 scroll_state_ = STATE_UNKNOWN; | 38 scroll_state_ = STATE_UNKNOWN; |
39 } else if (event.type == WebKit::WebInputEvent::MouseWheel) { | 39 } else if (event.type == WebKit::WebInputEvent::MouseWheel) { |
40 const WebKit::WebMouseWheelEvent& wheel = | 40 const WebKit::WebMouseWheelEvent& wheel = |
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335 const WebKit::WebInputEvent& event) const { | 335 const WebKit::WebInputEvent& event) const { |
336 if (!WebKit::WebInputEvent::isGestureEventType(event.type)) | 336 if (!WebKit::WebInputEvent::isGestureEventType(event.type)) |
337 return false; | 337 return false; |
338 | 338 |
339 // If the GestureEventFilter already processed this event, then the event must | 339 // If the GestureEventFilter already processed this event, then the event must |
340 // not be sent to the filter again. | 340 // not be sent to the filter again. |
341 return !render_widget_host_->gesture_event_filter()->HasQueuedGestureEvents(); | 341 return !render_widget_host_->gesture_event_filter()->HasQueuedGestureEvents(); |
342 } | 342 } |
343 | 343 |
344 } // namespace content | 344 } // namespace content |
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