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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 android.os.Process;
     20 import android.view.Display;
     21 import android.view.InputChannel;
     22 import android.view.WindowManager;
     23 import com.android.server.input.InputApplicationHandle;
     24 import com.android.server.input.InputWindowHandle;
     25 
     26 class InputConsumerImpl {
     27     final WindowManagerService mService;
     28     final InputChannel mServerChannel, mClientChannel;
     29     final InputApplicationHandle mApplicationHandle;
     30     final InputWindowHandle mWindowHandle;
     31 
     32     InputConsumerImpl(WindowManagerService service, String name, InputChannel inputChannel) {
     33         mService = service;
     34 
     35         InputChannel[] channels = InputChannel.openInputChannelPair(name);
     36         mServerChannel = channels[0];
     37         if (inputChannel != null) {
     38             channels[1].transferTo(inputChannel);
     39             channels[1].dispose();
     40             mClientChannel = inputChannel;
     41         } else {
     42             mClientChannel = channels[1];
     43         }
     44         mService.mInputManager.registerInputChannel(mServerChannel, null);
     45 
     46         mApplicationHandle = new InputApplicationHandle(null);
     47         mApplicationHandle.name = name;
     48         mApplicationHandle.dispatchingTimeoutNanos =
     49                 WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
     50 
     51         mWindowHandle = new InputWindowHandle(mApplicationHandle, null, Display.DEFAULT_DISPLAY);
     52         mWindowHandle.name = name;
     53         mWindowHandle.inputChannel = mServerChannel;
     54         mWindowHandle.layoutParamsType = WindowManager.LayoutParams.TYPE_INPUT_CONSUMER;
     55         mWindowHandle.layer = getLayerLw(mWindowHandle.layoutParamsType);
     56         mWindowHandle.layoutParamsFlags = 0;
     57         mWindowHandle.dispatchingTimeoutNanos =
     58                 WindowManagerService.DEFAULT_INPUT_DISPATCHING_TIMEOUT_NANOS;
     59         mWindowHandle.visible = true;
     60         mWindowHandle.canReceiveKeys = false;
     61         mWindowHandle.hasFocus = false;
     62         mWindowHandle.hasWallpaper = false;
     63         mWindowHandle.paused = false;
     64         mWindowHandle.ownerPid = Process.myPid();
     65         mWindowHandle.ownerUid = Process.myUid();
     66         mWindowHandle.inputFeatures = 0;
     67         mWindowHandle.scaleFactor = 1.0f;
     68     }
     69 
     70     void layout(int dw, int dh) {
     71         mWindowHandle.touchableRegion.set(0, 0, dw, dh);
     72         mWindowHandle.frameLeft = 0;
     73         mWindowHandle.frameTop = 0;
     74         mWindowHandle.frameRight = dw;
     75         mWindowHandle.frameBottom = dh;
     76     }
     77 
     78     private int getLayerLw(int windowType) {
     79         return mService.mPolicy.windowTypeToLayerLw(windowType)
     80                 * WindowManagerService.TYPE_LAYER_MULTIPLIER
     81                 + WindowManagerService.TYPE_LAYER_OFFSET;
     82     }
     83 
     84     void disposeChannelsLw() {
     85         mService.mInputManager.unregisterInputChannel(mServerChannel);
     86         mClientChannel.dispose();
     87         mServerChannel.dispose();
     88     }
     89 }
     90