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EventThrottlerIme.h
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1 /* @@@LICENSE
2 *
3 * Copyright (c) 2008-2012 Hewlett-Packard Development Company, L.P.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
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14 * See the License for the specific language governing permissions and
15 * limitations under the License.
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17 * LICENSE@@@ */
18 
19 
20 
21 
22 #ifndef __EventThrottlerIme_h__
23 #define __EventThrottlerIme_h__
24 
25 #include "Common.h"
26 
27 #include "Event.h"
28 
30 {
31 public:
34 
35  static EventThrottlerIme* instance();
36 
37  bool shouldDropEvent(Event* e);
38 
39 private:
40  int m_curPenMoveFreq;
41  int m_curGestureMoveFreq;
42  bool m_penTracking;
43 
44  uint32_t m_lastPostedPenMoveTime;
45  uint32_t m_lastPostedPenDownTime;
46  int m_lastPostedPenMoveX;
47  int m_lastPostedPenMoveY;
48 
49  int m_lastPostedGestureChangeX;
50  int m_lastPostedGestureChangeY;
51  uint32_t m_lastPostedGestureChangeTime;
52 
53  void updatePenLocation(Event* e);
54  bool shouldDropMove(Event* e);
55  bool shouldDropGestureChange(Event* e);
56 };
57 
58 #endif // __EventThrottlerIme_h__
59