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comparison: widget/gonk/libui/InputListener.h

widget/gonk/libui/InputListener.h

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TOR_BUG_9701
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1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef _UI_INPUT_LISTENER_H
18 #define _UI_INPUT_LISTENER_H
19
20 #include "Input.h"
21 #include <utils/RefBase.h>
22 #include <utils/Vector.h>
23
24 namespace android {
25
26 class InputListenerInterface;
27
28
29 /* Superclass of all input event argument objects */
30 struct NotifyArgs {
31 virtual ~NotifyArgs() { }
32
33 virtual void notify(const sp<InputListenerInterface>& listener) const = 0;
34 };
35
36
37 /* Describes a configuration change event. */
38 struct NotifyConfigurationChangedArgs : public NotifyArgs {
39 nsecs_t eventTime;
40
41 inline NotifyConfigurationChangedArgs() { }
42
43 NotifyConfigurationChangedArgs(nsecs_t eventTime);
44
45 NotifyConfigurationChangedArgs(const NotifyConfigurationChangedArgs& other);
46
47 virtual ~NotifyConfigurationChangedArgs() { }
48
49 virtual void notify(const sp<InputListenerInterface>& listener) const;
50 };
51
52
53 /* Describes a key event. */
54 struct NotifyKeyArgs : public NotifyArgs {
55 nsecs_t eventTime;
56 int32_t deviceId;
57 uint32_t source;
58 uint32_t policyFlags;
59 int32_t action;
60 int32_t flags;
61 int32_t keyCode;
62 int32_t scanCode;
63 int32_t metaState;
64 nsecs_t downTime;
65
66 inline NotifyKeyArgs() { }
67
68 NotifyKeyArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source, uint32_t policyFlags,
69 int32_t action, int32_t flags, int32_t keyCode, int32_t scanCode,
70 int32_t metaState, nsecs_t downTime);
71
72 NotifyKeyArgs(const NotifyKeyArgs& other);
73
74 virtual ~NotifyKeyArgs() { }
75
76 virtual void notify(const sp<InputListenerInterface>& listener) const;
77 };
78
79
80 /* Describes a motion event. */
81 struct NotifyMotionArgs : public NotifyArgs {
82 nsecs_t eventTime;
83 int32_t deviceId;
84 uint32_t source;
85 uint32_t policyFlags;
86 int32_t action;
87 int32_t flags;
88 int32_t metaState;
89 int32_t buttonState;
90 int32_t edgeFlags;
91 int32_t displayId;
92 uint32_t pointerCount;
93 PointerProperties pointerProperties[MAX_POINTERS];
94 PointerCoords pointerCoords[MAX_POINTERS];
95 float xPrecision;
96 float yPrecision;
97 nsecs_t downTime;
98
99 inline NotifyMotionArgs() { }
100
101 NotifyMotionArgs(nsecs_t eventTime, int32_t deviceId, uint32_t source, uint32_t policyFlags,
102 int32_t action, int32_t flags, int32_t metaState, int32_t buttonState,
103 int32_t edgeFlags, int32_t displayId, uint32_t pointerCount,
104 const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
105 float xPrecision, float yPrecision, nsecs_t downTime);
106
107 NotifyMotionArgs(const NotifyMotionArgs& other);
108
109 virtual ~NotifyMotionArgs() { }
110
111 virtual void notify(const sp<InputListenerInterface>& listener) const;
112 };
113
114
115 /* Describes a switch event. */
116 struct NotifySwitchArgs : public NotifyArgs {
117 nsecs_t eventTime;
118 uint32_t policyFlags;
119 uint32_t switchValues;
120 uint32_t switchMask;
121
122 inline NotifySwitchArgs() { }
123
124 NotifySwitchArgs(nsecs_t eventTime, uint32_t policyFlags,
125 uint32_t switchValues, uint32_t switchMask);
126
127 NotifySwitchArgs(const NotifySwitchArgs& other);
128
129 virtual ~NotifySwitchArgs() { }
130
131 virtual void notify(const sp<InputListenerInterface>& listener) const;
132 };
133
134
135 /* Describes a device reset event, such as when a device is added,
136 * reconfigured, or removed. */
137 struct NotifyDeviceResetArgs : public NotifyArgs {
138 nsecs_t eventTime;
139 int32_t deviceId;
140
141 inline NotifyDeviceResetArgs() { }
142
143 NotifyDeviceResetArgs(nsecs_t eventTime, int32_t deviceId);
144
145 NotifyDeviceResetArgs(const NotifyDeviceResetArgs& other);
146
147 virtual ~NotifyDeviceResetArgs() { }
148
149 virtual void notify(const sp<InputListenerInterface>& listener) const;
150 };
151
152
153 /*
154 * The interface used by the InputReader to notify the InputListener about input events.
155 */
156 class InputListenerInterface : public virtual RefBase {
157 protected:
158 InputListenerInterface() { }
159 virtual ~InputListenerInterface() { }
160
161 public:
162 virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) = 0;
163 virtual void notifyKey(const NotifyKeyArgs* args) = 0;
164 virtual void notifyMotion(const NotifyMotionArgs* args) = 0;
165 virtual void notifySwitch(const NotifySwitchArgs* args) = 0;
166 virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args) = 0;
167 };
168
169
170 /*
171 * An implementation of the listener interface that queues up and defers dispatch
172 * of decoded events until flushed.
173 */
174 class QueuedInputListener : public InputListenerInterface {
175 protected:
176 virtual ~QueuedInputListener();
177
178 public:
179 QueuedInputListener(const sp<InputListenerInterface>& innerListener);
180
181 virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args);
182 virtual void notifyKey(const NotifyKeyArgs* args);
183 virtual void notifyMotion(const NotifyMotionArgs* args);
184 virtual void notifySwitch(const NotifySwitchArgs* args);
185 virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
186
187 void flush();
188
189 private:
190 sp<InputListenerInterface> mInnerListener;
191 Vector<NotifyArgs*> mArgsQueue;
192 };
193
194 } // namespace android
195
196 #endif // _UI_INPUT_LISTENER_H

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