LocalDisplayAdapter.java revision 64a55af0ac700baecb0877235eb42caac59a3560 
1/*
2 * Copyright (C) 2012 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
17package com.android.server.display;
18
19import android.content.Context;
20import android.os.IBinder;
21import android.view.Surface;
22import android.view.Surface.PhysicalDisplayInfo;
23
24/**
25 * A display adapter for the local displays managed by Surface Flinger.
26 */
27public final class LocalDisplayAdapter extends DisplayAdapter {
28    private final Context mContext;
29    private final LocalDisplayDevice mDefaultDisplayDevice;
30
31    public LocalDisplayAdapter(Context context) {
32        mContext = context;
33
34        IBinder token = Surface.getBuiltInDisplay(Surface.BUILT_IN_DISPLAY_ID_MAIN);
35        mDefaultDisplayDevice = new LocalDisplayDevice(token);
36    }
37
38    @Override
39    public String getName() {
40        return "LocalDisplayAdapter";
41    }
42
43    @Override
44    public void register(Listener listener) {
45        listener.onDisplayDeviceAdded(mDefaultDisplayDevice);
46    }
47
48    private final class LocalDisplayDevice extends DisplayDevice {
49        private final IBinder mDisplayToken;
50
51        public LocalDisplayDevice(IBinder token) {
52            mDisplayToken = token;
53        }
54
55        @Override
56        public DisplayAdapter getAdapter() {
57            return LocalDisplayAdapter.this;
58        }
59
60        @Override
61        public IBinder getDisplayToken() {
62            return mDisplayToken;
63        }
64
65        @Override
66        public void getInfo(DisplayDeviceInfo outInfo) {
67            PhysicalDisplayInfo phys = new PhysicalDisplayInfo();
68            Surface.getDisplayInfo(mDisplayToken, phys);
69
70            outInfo.name = mContext.getResources().getString(
71                    com.android.internal.R.string.display_manager_built_in_display);
72            outInfo.width = phys.width;
73            outInfo.height = phys.height;
74            outInfo.refreshRate = phys.refreshRate;
75            outInfo.densityDpi = (int)(phys.density * 160 + 0.5f);
76            outInfo.xDpi = phys.xDpi;
77            outInfo.yDpi = phys.yDpi;
78        }
79    }
80}
81