| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.wm; |
| |
| import static com.android.server.input.InputManagerService.ENABLE_PER_WINDOW_INPUT_ROTATION; |
| |
| import android.graphics.Point; |
| import android.view.InputChannel; |
| import android.view.InputDevice; |
| import android.view.InputEvent; |
| import android.view.InputEventReceiver; |
| import android.view.MotionEvent; |
| import android.view.Surface; |
| import android.view.WindowManagerPolicyConstants.PointerEventListener; |
| |
| import com.android.server.UiThread; |
| |
| import java.util.ArrayList; |
| |
| public class PointerEventDispatcher extends InputEventReceiver { |
| private final ArrayList<PointerEventListener> mListeners = new ArrayList<>(); |
| private PointerEventListener[] mListenersArray = new PointerEventListener[0]; |
| |
| private final DisplayContent mDisplayContent; |
| private final Point mTmpSize = new Point(); |
| |
| public PointerEventDispatcher(InputChannel inputChannel, DisplayContent dc) { |
| super(inputChannel, UiThread.getHandler().getLooper()); |
| mDisplayContent = dc; |
| } |
| |
| @Override |
| public void onInputEvent(InputEvent event) { |
| try { |
| if (event instanceof MotionEvent |
| && (event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { |
| MotionEvent motionEvent = (MotionEvent) event; |
| if (ENABLE_PER_WINDOW_INPUT_ROTATION) { |
| final int rotation = mDisplayContent.getRotation(); |
| if (rotation != Surface.ROTATION_0) { |
| mDisplayContent.getDisplay().getRealSize(mTmpSize); |
| motionEvent = MotionEvent.obtain(motionEvent); |
| motionEvent.transform(MotionEvent.createRotateMatrix( |
| rotation, mTmpSize.x, mTmpSize.y)); |
| } |
| } |
| PointerEventListener[] listeners; |
| synchronized (mListeners) { |
| if (mListenersArray == null) { |
| mListenersArray = new PointerEventListener[mListeners.size()]; |
| mListeners.toArray(mListenersArray); |
| } |
| listeners = mListenersArray; |
| } |
| for (int i = 0; i < listeners.length; ++i) { |
| listeners[i].onPointerEvent(motionEvent); |
| } |
| } |
| } finally { |
| finishInputEvent(event, false); |
| } |
| } |
| |
| /** |
| * Add the specified listener to the list. |
| * @param listener The listener to add. |
| */ |
| public void registerInputEventListener(PointerEventListener listener) { |
| synchronized (mListeners) { |
| if (mListeners.contains(listener)) { |
| throw new IllegalStateException("registerInputEventListener: trying to register" + |
| listener + " twice."); |
| } |
| mListeners.add(listener); |
| mListenersArray = null; |
| } |
| } |
| |
| /** |
| * Remove the specified listener from the list. |
| * @param listener The listener to remove. |
| */ |
| public void unregisterInputEventListener(PointerEventListener listener) { |
| synchronized (mListeners) { |
| if (!mListeners.contains(listener)) { |
| throw new IllegalStateException("registerInputEventListener: " + listener + |
| " not registered."); |
| } |
| mListeners.remove(listener); |
| mListenersArray = null; |
| } |
| } |
| |
| /** Dispose the associated input channel and clean up the listeners. */ |
| @Override |
| public void dispose() { |
| super.dispose(); |
| synchronized (mListeners) { |
| mListeners.clear(); |
| mListenersArray = null; |
| } |
| } |
| } |