motion_event_generic.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
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
3// found in the LICENSE file.
4
5#ifndef UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_GENERIC_H_
6#define UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_GENERIC_H_
7
8#include "base/basictypes.h"
9#include "base/containers/stack_container.h"
10#include "ui/events/gesture_detection/gesture_detection_export.h"
11#include "ui/events/gesture_detection/motion_event.h"
12
13namespace ui {
14
15struct GESTURE_DETECTION_EXPORT PointerProperties {
16  PointerProperties();
17  PointerProperties(float x, float y);
18
19  int id;
20  MotionEvent::ToolType tool_type;
21  float x;
22  float y;
23  float raw_x;
24  float raw_y;
25  float pressure;
26  float touch_major;
27  float touch_minor;
28  float orientation;
29};
30
31// A generic MotionEvent implementation.
32class GESTURE_DETECTION_EXPORT MotionEventGeneric : public MotionEvent {
33 public:
34  MotionEventGeneric(Action action,
35                     base::TimeTicks event_time,
36                     const PointerProperties& pointer);
37  MotionEventGeneric(const MotionEventGeneric& other);
38
39  virtual ~MotionEventGeneric();
40
41  // MotionEvent implementation.
42  virtual int GetId() const OVERRIDE;
43  virtual Action GetAction() const OVERRIDE;
44  virtual int GetActionIndex() const OVERRIDE;
45  virtual size_t GetPointerCount() const OVERRIDE;
46  virtual int GetPointerId(size_t pointer_index) const OVERRIDE;
47  virtual float GetX(size_t pointer_index) const OVERRIDE;
48  virtual float GetY(size_t pointer_index) const OVERRIDE;
49  virtual float GetRawX(size_t pointer_index) const OVERRIDE;
50  virtual float GetRawY(size_t pointer_index) const OVERRIDE;
51  virtual float GetTouchMajor(size_t pointer_index) const OVERRIDE;
52  virtual float GetTouchMinor(size_t pointer_index) const OVERRIDE;
53  virtual float GetOrientation(size_t pointer_index) const OVERRIDE;
54  virtual float GetPressure(size_t pointer_index) const OVERRIDE;
55  virtual ToolType GetToolType(size_t pointer_index) const OVERRIDE;
56  virtual int GetButtonState() const OVERRIDE;
57  virtual int GetFlags() const OVERRIDE;
58  virtual base::TimeTicks GetEventTime() const OVERRIDE;
59  virtual scoped_ptr<MotionEvent> Clone() const OVERRIDE;
60  virtual scoped_ptr<MotionEvent> Cancel() const OVERRIDE;
61
62  void PushPointer(const PointerProperties& pointer);
63
64  void set_action(Action action) { action_ = action; }
65  void set_event_time(base::TimeTicks event_time) { event_time_ = event_time; }
66  void set_id(int id) { id_ = id; }
67  void set_action_index(int action_index) { action_index_ = action_index; }
68  void set_button_state(int button_state) { button_state_ = button_state; }
69  void set_flags(int flags) { flags_ = flags; }
70
71 protected:
72  MotionEventGeneric();
73
74  void PopPointer();
75
76  PointerProperties& pointer(size_t index) { return pointers_[index]; }
77  const PointerProperties& pointer(size_t index) const {
78    return pointers_[index];
79  }
80
81 private:
82  enum { kTypicalMaxPointerCount = 5 };
83
84  Action action_;
85  base::TimeTicks event_time_;
86  int id_;
87  int action_index_;
88  int button_state_;
89  int flags_;
90  base::StackVector<PointerProperties, kTypicalMaxPointerCount> pointers_;
91};
92
93}  // namespace ui
94
95#endif  // UI_EVENTS_GESTURE_DETECTION_UI_MOTION_EVENT_GENERIC_H_
96