| /* |
| * 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; |
| mInfo.touch = DisplayDeviceInfo.TOUCH_NONE; |
| } |
| return mInfo; |
| } |
| } |
| } |