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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_ | 5 #ifndef UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_ |
6 #define UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_ | 6 #define UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_ |
7 | 7 |
8 #include "base/memory/scoped_ptr.h" | 8 #include "base/memory/scoped_ptr.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 #include "ui/events/gesture_detection/gesture_detection_export.h" | 10 #include "ui/events/gesture_detection/gesture_detection_export.h" |
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85 float GetX() const { return GetX(0); } | 85 float GetX() const { return GetX(0); } |
86 float GetY() const { return GetY(0); } | 86 float GetY() const { return GetY(0); } |
87 float GetRawX() const { return GetRawX(0); } | 87 float GetRawX() const { return GetRawX(0); } |
88 float GetRawY() const { return GetRawY(0); } | 88 float GetRawY() const { return GetRawY(0); } |
89 float GetRawOffsetX() const { return GetRawX() - GetX(); } | 89 float GetRawOffsetX() const { return GetRawX() - GetX(); } |
90 float GetRawOffsetY() const { return GetRawY() - GetY(); } | 90 float GetRawOffsetY() const { return GetRawY() - GetY(); } |
91 | 91 |
92 float GetTouchMajor() const { return GetTouchMajor(0); } | 92 float GetTouchMajor() const { return GetTouchMajor(0); } |
93 float GetTouchMinor() const { return GetTouchMinor(0); } | 93 float GetTouchMinor() const { return GetTouchMinor(0); } |
94 | 94 |
95 // Returns the orientation of the major axis clockwise from vertical, in | 95 // Returns the orientation in radians. The meaning is overloaded: |
96 // radians. The return value lies in [-PI/2, PI/2]. | 96 // * For a touch screen or pad, it's the orientation of the major axis |
| 97 // clockwise from vertical. The return value lies in [-PI/2, PI/2]. |
| 98 // * For a stylus, it indicates the direction in which the stylus is pointing. |
| 99 // The return value lies in [-PI, PI]. |
97 float GetOrientation() const { return GetOrientation(0); } | 100 float GetOrientation() const { return GetOrientation(0); } |
98 | 101 |
99 float GetPressure() const { return GetPressure(0); } | 102 float GetPressure() const { return GetPressure(0); } |
100 ToolType GetToolType() const { return GetToolType(0); } | 103 ToolType GetToolType() const { return GetToolType(0); } |
101 | 104 |
102 // O(N) search of pointers (use sparingly!). Returns -1 if |id| nonexistent. | 105 // O(N) search of pointers (use sparingly!). Returns -1 if |id| nonexistent. |
103 int FindPointerIndexOfId(int id) const; | 106 int FindPointerIndexOfId(int id) const; |
104 | 107 |
105 // Note that these methods perform shallow copies of the originating events. | 108 // Note that these methods perform shallow copies of the originating events. |
106 // They guarantee only that the returned type will reflect the same | 109 // They guarantee only that the returned type will reflect the same |
107 // data exposed by the MotionEvent interface; no guarantees are made that the | 110 // data exposed by the MotionEvent interface; no guarantees are made that the |
108 // underlying implementation is identical to the source implementation. | 111 // underlying implementation is identical to the source implementation. |
109 scoped_ptr<MotionEvent> Clone() const; | 112 scoped_ptr<MotionEvent> Clone() const; |
110 scoped_ptr<MotionEvent> Cancel() const; | 113 scoped_ptr<MotionEvent> Cancel() const; |
111 }; | 114 }; |
112 | 115 |
113 } // namespace ui | 116 } // namespace ui |
114 | 117 |
115 #endif // UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_ | 118 #endif // UI_EVENTS_GESTURE_DETECTION_MOTION_EVENT_H_ |
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