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/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 197
