Craig Mautner | 037aa8d | 2013-06-07 10:35:44 -0700 | [diff] [blame] | 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 | package com.android.server.wm; |
| 18 | |
| 19 | import android.view.InputChannel; |
| 20 | import android.view.InputDevice; |
| 21 | import android.view.InputEvent; |
| 22 | import android.view.InputEventReceiver; |
| 23 | import android.view.MotionEvent; |
Adrian Roos | e99bc05 | 2017-11-20 17:55:31 +0100 | [diff] [blame] | 24 | import android.view.WindowManagerPolicyConstants.PointerEventListener; |
Craig Mautner | 037aa8d | 2013-06-07 10:35:44 -0700 | [diff] [blame] | 25 | |
| 26 | import com.android.server.UiThread; |
| 27 | |
| 28 | import java.util.ArrayList; |
| 29 | |
| 30 | public class PointerEventDispatcher extends InputEventReceiver { |
| 31 | ArrayList<PointerEventListener> mListeners = new ArrayList<PointerEventListener>(); |
| 32 | PointerEventListener[] mListenersArray = new PointerEventListener[0]; |
| 33 | |
| 34 | public PointerEventDispatcher(InputChannel inputChannel) { |
| 35 | super(inputChannel, UiThread.getHandler().getLooper()); |
| 36 | } |
| 37 | |
| 38 | @Override |
Tarandeep Singh | e1cfcf4 | 2017-07-10 18:50:00 -0700 | [diff] [blame] | 39 | public void onInputEvent(InputEvent event, int displayId) { |
Craig Mautner | 037aa8d | 2013-06-07 10:35:44 -0700 | [diff] [blame] | 40 | try { |
| 41 | if (event instanceof MotionEvent |
| 42 | && (event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { |
Tarandeep Singh | e1cfcf4 | 2017-07-10 18:50:00 -0700 | [diff] [blame] | 43 | final MotionEvent motionEvent = (MotionEvent) event; |
Craig Mautner | 037aa8d | 2013-06-07 10:35:44 -0700 | [diff] [blame] | 44 | PointerEventListener[] listeners; |
| 45 | synchronized (mListeners) { |
| 46 | if (mListenersArray == null) { |
| 47 | mListenersArray = new PointerEventListener[mListeners.size()]; |
| 48 | mListeners.toArray(mListenersArray); |
| 49 | } |
| 50 | listeners = mListenersArray; |
| 51 | } |
| 52 | for (int i = 0; i < listeners.length; ++i) { |
Tarandeep Singh | e1cfcf4 | 2017-07-10 18:50:00 -0700 | [diff] [blame] | 53 | listeners[i].onPointerEvent(motionEvent, displayId); |
Craig Mautner | 037aa8d | 2013-06-07 10:35:44 -0700 | [diff] [blame] | 54 | } |
| 55 | } |
| 56 | } finally { |
| 57 | finishInputEvent(event, false); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Add the specified listener to the list. |
| 63 | * @param listener The listener to add. |
| 64 | */ |
| 65 | public void registerInputEventListener(PointerEventListener listener) { |
| 66 | synchronized (mListeners) { |
| 67 | if (mListeners.contains(listener)) { |
| 68 | throw new IllegalStateException("registerInputEventListener: trying to register" + |
| 69 | listener + " twice."); |
| 70 | } |
| 71 | mListeners.add(listener); |
| 72 | mListenersArray = null; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Remove the specified listener from the list. |
| 78 | * @param listener The listener to remove. |
| 79 | */ |
| 80 | public void unregisterInputEventListener(PointerEventListener listener) { |
| 81 | synchronized (mListeners) { |
| 82 | if (!mListeners.contains(listener)) { |
| 83 | throw new IllegalStateException("registerInputEventListener: " + listener + |
| 84 | " not registered."); |
| 85 | } |
| 86 | mListeners.remove(listener); |
| 87 | mListenersArray = null; |
| 88 | } |
| 89 | } |
| 90 | } |