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/*
* Copyright (C) 2012 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.display;
import android.content.Context;
import android.os.Handler;
import android.util.DisplayMetrics;
/**
* Provides a fake default display for headless systems.
* <p>
* Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock.
* </p>
*/
final class HeadlessDisplayAdapter extends DisplayAdapter {
private static final String TAG = "HeadlessDisplayAdapter";
public HeadlessDisplayAdapter(DisplayManagerService.SyncRoot syncRoot,
Context context, Handler handler, Listener listener) {
super(syncRoot, context, handler, listener, TAG);
}
@Override
public void registerLocked() {
super.registerLocked();
sendDisplayDeviceEventLocked(new HeadlessDisplayDevice(), DISPLAY_DEVICE_EVENT_ADDED);
}
private final class HeadlessDisplayDevice extends DisplayDevice {
private DisplayDeviceInfo mInfo;
public HeadlessDisplayDevice() {
super(HeadlessDisplayAdapter.this, null);
}
@Override
public DisplayDeviceInfo getDisplayDeviceInfoLocked() {
if (mInfo == null) {
mInfo = new DisplayDeviceInfo();
mInfo.name = getContext().getResources().getString(
com.android.internal.R.string.display_manager_built_in_display_name);
mInfo.width = 640;
mInfo.height = 480;
mInfo.refreshRate = 60;
mInfo.densityDpi = DisplayMetrics.DENSITY_DEFAULT;
mInfo.xDpi = 160;
mInfo.yDpi = 160;
mInfo.flags = DisplayDeviceInfo.FLAG_DEFAULT_DISPLAY
| DisplayDeviceInfo.FLAG_SECURE
| DisplayDeviceInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS;
mInfo.touch = DisplayDeviceInfo.TOUCH_NONE;
}
return mInfo;
}
}
}
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