| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_UI_EVENTS_HELPER_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_UI_EVENTS_HELPER_H_ |
| |
| #include "base/memory/scoped_vector.h" |
| #include "content/common/content_export.h" |
| #include "content/port/browser/event_with_latency_info.h" |
| |
| namespace WebKit { |
| class WebGestureEvent; |
| class WebTouchEvent; |
| class WebTouchPoint; |
| } |
| |
| namespace ui { |
| class GestureEvent; |
| class TouchEvent; |
| } |
| |
| namespace content { |
| |
| enum TouchEventCoordinateSystem { |
| SCREEN_COORDINATES, |
| LOCAL_COORDINATES |
| }; |
| |
| // Creates a list of ui::TouchEvents out of a single WebTouchEvent. |
| // A WebTouchEvent can contain information about a number of WebTouchPoints, |
| // whereas a ui::TouchEvent contains information about a single touch-point. So |
| // it is possible to create more than one ui::TouchEvents out of a single |
| // WebTouchEvent. All the ui::TouchEvent in the list will carry the same |
| // LatencyInfo the WebTouchEvent carries. |
| CONTENT_EXPORT bool MakeUITouchEventsFromWebTouchEvents( |
| const TouchEventWithLatencyInfo& touch, |
| ScopedVector<ui::TouchEvent>* list, |
| TouchEventCoordinateSystem coordinate_system); |
| |
| // Creates a WebGestureEvent from a ui::GestureEvent. Note that it does not |
| // populate the event coordinates (i.e. |x|, |y|, |globalX|, and |globalY|). So |
| // the caller must populate these fields. |
| WebKit::WebGestureEvent MakeWebGestureEventFromUIEvent( |
| const ui::GestureEvent& event); |
| |
| int EventFlagsToWebEventModifiers(int flags); |
| |
| // Updates the WebTouchEvent based on the TouchEvent. It returns the updated |
| // WebTouchPoint contained in the WebTouchEvent, or NULL if no point was |
| // updated. |
| WebKit::WebTouchPoint* UpdateWebTouchEventFromUIEvent( |
| const ui::TouchEvent& event, |
| WebKit::WebTouchEvent* web_event); |
| } |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_UI_EVENTS_HELPER_H_ |