1 /* 2 * Copyright (C) 2013 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 _ANDROID_VIEW_INPUTQUEUE_H 18 #define _ANDROID_VIEW_INPUTQUEUE_H 19 20 #include <input/Input.h> 21 #include <utils/Looper.h> 22 #include <utils/TypeHelpers.h> 23 #include <utils/Vector.h> 24 25 #include <nativehelper/JNIHelp.h> 26 27 /* 28 * Declare a concrete type for the NDK's AInputQueue forward declaration 29 */ 30 struct AInputQueue{ 31 }; 32 33 namespace android { 34 35 class InputQueue : public AInputQueue, public MessageHandler { 36 public: 37 virtual ~InputQueue(); 38 39 void attachLooper(Looper* looper, int ident, ALooper_callbackFunc callback, void* data); 40 41 void detachLooper(); 42 43 bool hasEvents(); 44 45 status_t getEvent(InputEvent** outEvent); 46 47 bool preDispatchEvent(InputEvent* event); 48 49 void finishEvent(InputEvent* event, bool handled); 50 51 KeyEvent* createKeyEvent(); 52 53 MotionEvent* createMotionEvent(); 54 55 void recycleInputEvent(InputEvent* event); 56 57 void enqueueEvent(InputEvent* event); 58 59 static InputQueue* createQueue(jobject inputQueueObj, const sp<Looper>& looper); 60 61 protected: 62 virtual void handleMessage(const Message& message); 63 64 private: 65 InputQueue(jobject inputQueueObj, const sp<Looper>& looper, 66 int readDispatchFd, int writeDispatchFd); 67 68 void detachLooperLocked(); 69 70 jobject mInputQueueWeakGlobal; 71 int mDispatchReadFd; 72 int mDispatchWriteFd; 73 Vector<Looper*> mAppLoopers; 74 sp<Looper> mDispatchLooper; 75 sp<WeakMessageHandler> mHandler; 76 PooledInputEventFactory mPooledInputEventFactory; 77 // Guards the pending and finished event vectors 78 mutable Mutex mLock; 79 Vector<InputEvent*> mPendingEvents; 80 Vector<key_value_pair_t<InputEvent*, bool> > mFinishedEvents; 81 }; 82 83 } // namespace android 84 85 #endif 86