Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 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 | |
| 17 | package com.android.internal.view; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.database.ContentObserver; |
| 21 | import android.net.Uri; |
| 22 | import android.os.AsyncTask; |
| 23 | import android.os.Handler; |
| 24 | import android.os.RemoteException; |
| 25 | import android.os.ServiceManager; |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 26 | import android.os.UserHandle; |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 27 | import android.provider.Settings; |
| 28 | import android.util.Log; |
| 29 | import android.view.IWindowManager; |
| 30 | import android.view.Surface; |
Jeff Brown | 98365d7 | 2012-08-19 20:30:52 -0700 | [diff] [blame] | 31 | import android.view.WindowManagerGlobal; |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 32 | |
| 33 | /** |
| 34 | * Provides helper functions for configuring the display rotation policy. |
| 35 | */ |
| 36 | public final class RotationPolicy { |
| 37 | private static final String TAG = "RotationPolicy"; |
| 38 | |
| 39 | private RotationPolicy() { |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Returns true if the device supports the rotation-lock toggle feature |
| 44 | * in the system UI or system bar. |
| 45 | * |
| 46 | * When the rotation-lock toggle is supported, the "auto-rotate screen" option in |
| 47 | * Display settings should be hidden, but it should remain available in Accessibility |
| 48 | * settings. |
| 49 | */ |
| 50 | public static boolean isRotationLockToggleSupported(Context context) { |
| 51 | return context.getResources().getConfiguration().smallestScreenWidthDp >= 600; |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Returns true if the rotation-lock toggle should be shown in the UI. |
| 56 | */ |
| 57 | public static boolean isRotationLockToggleVisible(Context context) { |
| 58 | return isRotationLockToggleSupported(context) && |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 59 | Settings.System.getIntForUser(context.getContentResolver(), |
| 60 | Settings.System.HIDE_ROTATION_LOCK_TOGGLE_FOR_ACCESSIBILITY, 0, |
| 61 | UserHandle.USER_CURRENT) == 0; |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Returns true if rotation lock is enabled. |
| 66 | */ |
| 67 | public static boolean isRotationLocked(Context context) { |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 68 | return Settings.System.getIntForUser(context.getContentResolver(), |
| 69 | Settings.System.ACCELEROMETER_ROTATION, 0, UserHandle.USER_CURRENT) == 0; |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Enables or disables rotation lock. |
| 74 | * |
| 75 | * Should be used by the rotation lock toggle. |
| 76 | */ |
| 77 | public static void setRotationLock(Context context, final boolean enabled) { |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 78 | Settings.System.putIntForUser(context.getContentResolver(), |
| 79 | Settings.System.HIDE_ROTATION_LOCK_TOGGLE_FOR_ACCESSIBILITY, 0, |
| 80 | UserHandle.USER_CURRENT); |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 81 | |
| 82 | AsyncTask.execute(new Runnable() { |
| 83 | @Override |
| 84 | public void run() { |
| 85 | try { |
Jeff Brown | 98365d7 | 2012-08-19 20:30:52 -0700 | [diff] [blame] | 86 | IWindowManager wm = WindowManagerGlobal.getWindowManagerService(); |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 87 | if (enabled) { |
| 88 | wm.freezeRotation(-1); |
| 89 | } else { |
| 90 | wm.thawRotation(); |
| 91 | } |
| 92 | } catch (RemoteException exc) { |
| 93 | Log.w(TAG, "Unable to save auto-rotate setting"); |
| 94 | } |
| 95 | } |
| 96 | }); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Enables or disables rotation lock and adjusts whether the rotation lock toggle |
| 101 | * should be hidden for accessibility purposes. |
| 102 | * |
| 103 | * Should be used by Display settings and Accessibility settings. |
| 104 | */ |
| 105 | public static void setRotationLockForAccessibility(Context context, final boolean enabled) { |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 106 | Settings.System.putIntForUser(context.getContentResolver(), |
| 107 | Settings.System.HIDE_ROTATION_LOCK_TOGGLE_FOR_ACCESSIBILITY, enabled ? 1 : 0, |
| 108 | UserHandle.USER_CURRENT); |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 109 | |
| 110 | AsyncTask.execute(new Runnable() { |
| 111 | @Override |
| 112 | public void run() { |
| 113 | try { |
Jeff Brown | 98365d7 | 2012-08-19 20:30:52 -0700 | [diff] [blame] | 114 | IWindowManager wm = WindowManagerGlobal.getWindowManagerService(); |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 115 | if (enabled) { |
| 116 | wm.freezeRotation(Surface.ROTATION_0); |
| 117 | } else { |
| 118 | wm.thawRotation(); |
| 119 | } |
| 120 | } catch (RemoteException exc) { |
| 121 | Log.w(TAG, "Unable to save auto-rotate setting"); |
| 122 | } |
| 123 | } |
| 124 | }); |
| 125 | } |
| 126 | |
| 127 | /** |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 128 | * Registers a listener for rotation policy changes affecting the caller's user |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 129 | */ |
| 130 | public static void registerRotationPolicyListener(Context context, |
| 131 | RotationPolicyListener listener) { |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 132 | registerRotationPolicyListener(context, listener, UserHandle.getCallingUserId()); |
| 133 | } |
| 134 | |
| 135 | /** |
| 136 | * Registers a listener for rotation policy changes affecting a specific user, |
| 137 | * or USER_ALL for all users. |
| 138 | */ |
| 139 | public static void registerRotationPolicyListener(Context context, |
| 140 | RotationPolicyListener listener, int userHandle) { |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 141 | context.getContentResolver().registerContentObserver(Settings.System.getUriFor( |
| 142 | Settings.System.ACCELEROMETER_ROTATION), |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 143 | false, listener.mObserver, userHandle); |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 144 | context.getContentResolver().registerContentObserver(Settings.System.getUriFor( |
| 145 | Settings.System.HIDE_ROTATION_LOCK_TOGGLE_FOR_ACCESSIBILITY), |
Christopher Tate | 5e08af0 | 2012-09-21 17:17:22 -0700 | [diff] [blame] | 146 | false, listener.mObserver, userHandle); |
Jeff Brown | 207673cd | 2012-06-05 17:47:11 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Unregisters a listener for rotation policy changes. |
| 151 | */ |
| 152 | public static void unregisterRotationPolicyListener(Context context, |
| 153 | RotationPolicyListener listener) { |
| 154 | context.getContentResolver().unregisterContentObserver(listener.mObserver); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Listener that is invoked whenever a change occurs that might affect the rotation policy. |
| 159 | */ |
| 160 | public static abstract class RotationPolicyListener { |
| 161 | final ContentObserver mObserver = new ContentObserver(new Handler()) { |
| 162 | public void onChange(boolean selfChange, Uri uri) { |
| 163 | RotationPolicyListener.this.onChange(); |
| 164 | } |
| 165 | }; |
| 166 | |
| 167 | public abstract void onChange(); |
| 168 | } |
| 169 | } |