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      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 package com.android.server.wm;
     18 
     19 import com.android.server.input.InputApplicationHandle;
     20 import com.android.server.input.InputWindowHandle;
     21 
     22 import android.os.Looper;
     23 import android.os.Process;
     24 import android.view.Display;
     25 import android.view.InputChannel;
     26 import android.view.InputEventReceiver;
     27 import android.view.WindowManagerPolicy;
     28 
     29 public final class FakeWindowImpl implements WindowManagerPolicy.FakeWindow {
     30     final WindowManagerService mService;
     31     final InputChannel mServerChannel, mClientChannel;
     32     final InputApplicationHandle mApplicationHandle;
     33     final InputWindowHandle mWindowHandle;
     34     final InputEventReceiver mInputEventReceiver;
     35     final int mWindowLayer;
     36 
     37     boolean mTouchFullscreen;
     38 
     39     public FakeWindowImpl(WindowManagerService service,
     40             Looper looper, InputEventReceiver.Factory inputEventReceiverFactory,
     41             String name, int windowType, int layoutParamsFlags,
     42             boolean canReceiveKeys, boolean hasFocus, boolean touchFullscreen) {
     43         mService = service;
     44 
     45         InputChannel[] channels = InputChannel.openInputChannelPair(name);
     46         mServerChannel = channels[0];
     47         mClientChannel = channels[1];
     48         mService.mInputManager.registerInputChannel(mServerChannel, null);
     49 
     50         mInputEventReceiver = inputEventReceiverFactory.createInputEventReceiver(
     51                 mClientChannel, looper);
     52 
     53         mApplicationHandle = new InputApplicationHandle(null);
     54         mApplicationHandle.name = name;
     55         mApplicationHandle.dispatchingTimeoutNanos =
     56                 WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
     57 
     58         mWindowHandle = new InputWindowHandle(mApplicationHandle, null, Display.DEFAULT_DISPLAY);
     59         mWindowHandle.name = name;
     60         mWindowHandle.inputChannel = mServerChannel;
     61         mWindowLayer = getLayerLw(windowType);
     62         mWindowHandle.layer = mWindowLayer;
     63         mWindowHandle.layoutParamsFlags = layoutParamsFlags;
     64         mWindowHandle.layoutParamsType = windowType;
     65         mWindowHandle.dispatchingTimeoutNanos =
     66                 WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
     67         mWindowHandle.visible = true;
     68         mWindowHandle.canReceiveKeys = canReceiveKeys;
     69         mWindowHandle.hasFocus = hasFocus;
     70         mWindowHandle.hasWallpaper = false;
     71         mWindowHandle.paused = false;
     72         mWindowHandle.ownerPid = Process.myPid();
     73         mWindowHandle.ownerUid = Process.myUid();
     74         mWindowHandle.inputFeatures = 0;
     75         mWindowHandle.scaleFactor = 1.0f;
     76 
     77         mTouchFullscreen = touchFullscreen;
     78     }
     79 
     80     void layout(int dw, int dh) {
     81         if (mTouchFullscreen) {
     82             mWindowHandle.touchableRegion.set(0, 0, dw, dh);
     83         } else {
     84             mWindowHandle.touchableRegion.setEmpty();
     85         }
     86         mWindowHandle.frameLeft = 0;
     87         mWindowHandle.frameTop = 0;
     88         mWindowHandle.frameRight = dw;
     89         mWindowHandle.frameBottom = dh;
     90     }
     91 
     92     @Override
     93     public void dismiss() {
     94         synchronized (mService.mWindowMap) {
     95             if (mService.removeFakeWindowLocked(this)) {
     96                 mInputEventReceiver.dispose();
     97                 mService.mInputManager.unregisterInputChannel(mServerChannel);
     98                 mClientChannel.dispose();
     99                 mServerChannel.dispose();
    100             }
    101         }
    102     }
    103 
    104     private int getLayerLw(int windowType) {
    105         return mService.mPolicy.windowTypeToLayerLw(windowType)
    106                 * WindowManagerService.TYPE_LAYER_MULTIPLIER
    107                 + WindowManagerService.TYPE_LAYER_OFFSET;
    108     }
    109 }
    110