| /* |
| * Copyright (C) 2017 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.systemui.pip.phone; |
| |
| import static android.view.WindowManager.INPUT_CONSUMER_PIP; |
| |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.util.Log; |
| import android.view.BatchedInputEventReceiver; |
| import android.view.Choreographer; |
| import android.view.InputChannel; |
| import android.view.InputEvent; |
| import android.view.IWindowManager; |
| import android.view.MotionEvent; |
| |
| import com.android.systemui.recents.misc.Utilities; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Manages the input consumer that allows the SystemUI to control the PiP. |
| */ |
| public class InputConsumerController { |
| |
| private static final String TAG = InputConsumerController.class.getSimpleName(); |
| |
| /** |
| * Listener interface for callers to subscribe to touch events. |
| */ |
| public interface TouchListener { |
| boolean onTouchEvent(MotionEvent ev); |
| } |
| |
| /** |
| * Listener interface for callers to learn when this class is registered or unregistered with |
| * window manager |
| */ |
| public interface RegistrationListener { |
| void onRegistrationChanged(boolean isRegistered); |
| } |
| |
| /** |
| * Input handler used for the PiP input consumer. Input events are batched and consumed with the |
| * SurfaceFlinger vsync. |
| */ |
| private final class PipInputEventReceiver extends BatchedInputEventReceiver { |
| |
| public PipInputEventReceiver(InputChannel inputChannel, Looper looper) { |
| super(inputChannel, looper, Choreographer.getSfInstance()); |
| } |
| |
| @Override |
| public void onInputEvent(InputEvent event, int displayId) { |
| boolean handled = true; |
| try { |
| // To be implemented for input handling over Pip windows |
| if (mListener != null && event instanceof MotionEvent) { |
| MotionEvent ev = (MotionEvent) event; |
| handled = mListener.onTouchEvent(ev); |
| } |
| } finally { |
| finishInputEvent(event, handled); |
| } |
| } |
| } |
| |
| private IWindowManager mWindowManager; |
| |
| private PipInputEventReceiver mInputEventReceiver; |
| private TouchListener mListener; |
| private RegistrationListener mRegistrationListener; |
| |
| public InputConsumerController(IWindowManager windowManager) { |
| mWindowManager = windowManager; |
| registerInputConsumer(); |
| } |
| |
| /** |
| * Sets the touch listener. |
| */ |
| public void setTouchListener(TouchListener listener) { |
| mListener = listener; |
| } |
| |
| /** |
| * Sets the registration listener. |
| */ |
| public void setRegistrationListener(RegistrationListener listener) { |
| mRegistrationListener = listener; |
| if (mRegistrationListener != null) { |
| mRegistrationListener.onRegistrationChanged(mInputEventReceiver != null); |
| } |
| } |
| |
| /** |
| * Check if the InputConsumer is currently registered with WindowManager |
| * |
| * @return {@code true} if registered, {@code false} if not. |
| */ |
| public boolean isRegistered() { |
| return mInputEventReceiver != null; |
| } |
| |
| /** |
| * Registers the input consumer. |
| */ |
| public void registerInputConsumer() { |
| if (mInputEventReceiver == null) { |
| final InputChannel inputChannel = new InputChannel(); |
| try { |
| mWindowManager.destroyInputConsumer(INPUT_CONSUMER_PIP); |
| mWindowManager.createInputConsumer(INPUT_CONSUMER_PIP, inputChannel); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to create PIP input consumer", e); |
| } |
| mInputEventReceiver = new PipInputEventReceiver(inputChannel, Looper.myLooper()); |
| if (mRegistrationListener != null) { |
| mRegistrationListener.onRegistrationChanged(true /* isRegistered */); |
| } |
| } |
| } |
| |
| /** |
| * Unregisters the input consumer. |
| */ |
| public void unregisterInputConsumer() { |
| if (mInputEventReceiver != null) { |
| try { |
| mWindowManager.destroyInputConsumer(INPUT_CONSUMER_PIP); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to destroy PIP input consumer", e); |
| } |
| mInputEventReceiver.dispose(); |
| mInputEventReceiver = null; |
| if (mRegistrationListener != null) { |
| mRegistrationListener.onRegistrationChanged(false /* isRegistered */); |
| } |
| } |
| } |
| |
| public void dump(PrintWriter pw, String prefix) { |
| final String innerPrefix = prefix + " "; |
| pw.println(prefix + TAG); |
| pw.println(innerPrefix + "registered=" + (mInputEventReceiver != null)); |
| } |
| } |