/services/java/com/android/server/display/HeadlessDisplayAdapter.java
https://github.com/aizuzi/platform_frameworks_base · Java · 73 lines · 43 code · 8 blank · 22 comment · 2 complexity · f952cdd168cd89f7a9521c4de37ae8e6 MD5 · raw file
- /*
- * 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;
- import android.view.Display;
- /**
- * 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";
- // Called with SyncRoot lock held.
- 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.type = Display.TYPE_BUILT_IN;
- mInfo.touch = DisplayDeviceInfo.TOUCH_NONE;
- }
- return mInfo;
- }
- }
- }