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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 #ifndef UI_BASE_GESTURES_GESTURE_RECOGNIZER_H_ | 5 #ifndef UI_BASE_GESTURES_GESTURE_RECOGNIZER_H_ |
6 #define UI_BASE_GESTURES_GESTURE_RECOGNIZER_H_ | 6 #define UI_BASE_GESTURES_GESTURE_RECOGNIZER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/memory/scoped_vector.h" | 10 #include "base/memory/scoped_vector.h" |
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22 // List of GestureEvent*. | 22 // List of GestureEvent*. |
23 typedef ScopedVector<GestureEvent> Gestures; | 23 typedef ScopedVector<GestureEvent> Gestures; |
24 | 24 |
25 virtual ~GestureRecognizer() {} | 25 virtual ~GestureRecognizer() {} |
26 | 26 |
27 // Invoked for each touch event that could contribute to the current gesture. | 27 // Invoked for each touch event that could contribute to the current gesture. |
28 // Returns list of zero or more GestureEvents identified after processing | 28 // Returns list of zero or more GestureEvents identified after processing |
29 // TouchEvent. | 29 // TouchEvent. |
30 // Caller would be responsible for freeing up Gestures. | 30 // Caller would be responsible for freeing up Gestures. |
31 virtual Gestures* ProcessTouchEventForGesture(const TouchEvent& event, | 31 virtual Gestures* ProcessTouchEventForGesture(const TouchEvent& event, |
32 ui::TouchStatus status, | 32 ui::EventResult result, |
33 GestureConsumer* consumer) = 0; | 33 GestureConsumer* consumer) = 0; |
34 | 34 |
35 // Touch-events can be queued to be played back at a later time. The queues | 35 // Touch-events can be queued to be played back at a later time. The queues |
36 // are identified by the target window. | 36 // are identified by the target window. |
37 virtual void QueueTouchEventForGesture(GestureConsumer* consumer, | 37 virtual void QueueTouchEventForGesture(GestureConsumer* consumer, |
38 const TouchEvent& event) = 0; | 38 const TouchEvent& event) = 0; |
39 | 39 |
40 // Process the touch-event in the queue for the window. Returns a list of | 40 // Process the touch-event in the queue for the window. Returns a list of |
41 // zero or more GestureEvents identified after processing the queueud | 41 // zero or more GestureEvents identified after processing the queueud |
42 // TouchEvent. Caller is responsible for freeing up Gestures. | 42 // TouchEvent. Caller is responsible for freeing up Gestures. |
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68 // If a gesture is underway for |consumer| |point| is set to the last touch | 68 // If a gesture is underway for |consumer| |point| is set to the last touch |
69 // point and true is returned. If no touch events have been processed for | 69 // point and true is returned. If no touch events have been processed for |
70 // |consumer| false is returned and |point| is untouched. | 70 // |consumer| false is returned and |point| is untouched. |
71 virtual bool GetLastTouchPointForTarget(GestureConsumer* consumer, | 71 virtual bool GetLastTouchPointForTarget(GestureConsumer* consumer, |
72 gfx::Point* point) = 0; | 72 gfx::Point* point) = 0; |
73 }; | 73 }; |
74 | 74 |
75 } // namespace ui | 75 } // namespace ui |
76 | 76 |
77 #endif // UI_BASE_GESTURES_GESTURE_RECOGNIZER_H_ | 77 #endif // UI_BASE_GESTURES_GESTURE_RECOGNIZER_H_ |
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