1 /* 2 * Copyright (C) 2010 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.settings; 18 19 import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT; 20 21 import android.app.ActivityManagerNative; 22 import android.app.Dialog; 23 import android.app.admin.DevicePolicyManager; 24 import android.content.BroadcastReceiver; 25 import android.content.ContentResolver; 26 import android.content.Context; 27 import android.content.Intent; 28 import android.content.IntentFilter; 29 import android.content.res.Configuration; 30 import android.content.res.Resources; 31 import android.hardware.display.DisplayManager; 32 import android.hardware.display.WifiDisplay; 33 import android.hardware.display.WifiDisplayStatus; 34 import android.os.Bundle; 35 import android.os.RemoteException; 36 import android.preference.CheckBoxPreference; 37 import android.preference.ListPreference; 38 import android.preference.Preference; 39 import android.preference.Preference.OnPreferenceClickListener; 40 import android.preference.PreferenceScreen; 41 import android.provider.Settings; 42 import android.provider.Settings.SettingNotFoundException; 43 import android.util.AttributeSet; 44 import android.util.Log; 45 46 import com.android.internal.view.RotationPolicy; 47 import com.android.settings.DreamSettings; 48 49 import java.util.ArrayList; 50 51 public class DisplaySettings extends SettingsPreferenceFragment implements 52 Preference.OnPreferenceChangeListener, OnPreferenceClickListener { 53 private static final String TAG = "DisplaySettings"; 54 55 /** If there is no setting in the provider, use this. */ 56 private static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000; 57 58 private static final String KEY_SCREEN_TIMEOUT = "screen_timeout"; 59 private static final String KEY_ACCELEROMETER = "accelerometer"; 60 private static final String KEY_FONT_SIZE = "font_size"; 61 private static final String KEY_NOTIFICATION_PULSE = "notification_pulse"; 62 private static final String KEY_SCREEN_SAVER = "screensaver"; 63 private static final String KEY_WIFI_DISPLAY = "wifi_display"; 64 65 private static final int DLG_GLOBAL_CHANGE_WARNING = 1; 66 67 private DisplayManager mDisplayManager; 68 69 private CheckBoxPreference mAccelerometer; 70 private WarnedListPreference mFontSizePref; 71 private CheckBoxPreference mNotificationPulse; 72 73 private final Configuration mCurConfig = new Configuration(); 74 75 private ListPreference mScreenTimeoutPreference; 76 private Preference mScreenSaverPreference; 77 78 private WifiDisplayStatus mWifiDisplayStatus; 79 private Preference mWifiDisplayPreference; 80 81 private final RotationPolicy.RotationPolicyListener mRotationPolicyListener = 82 new RotationPolicy.RotationPolicyListener() { 83 @Override 84 public void onChange() { 85 updateAccelerometerRotationCheckbox(); 86 } 87 }; 88 89 @Override 90 public void onCreate(Bundle savedInstanceState) { 91 super.onCreate(savedInstanceState); 92 ContentResolver resolver = getActivity().getContentResolver(); 93 94 addPreferencesFromResource(R.xml.display_settings); 95 96 mAccelerometer = (CheckBoxPreference) findPreference(KEY_ACCELEROMETER); 97 mAccelerometer.setPersistent(false); 98 if (RotationPolicy.isRotationLockToggleSupported(getActivity())) { 99 // If rotation lock is supported, then we do not provide this option in 100 // Display settings. However, is still available in Accessibility settings. 101 getPreferenceScreen().removePreference(mAccelerometer); 102 } 103 104 mScreenSaverPreference = findPreference(KEY_SCREEN_SAVER); 105 if (mScreenSaverPreference != null 106 && getResources().getBoolean( 107 com.android.internal.R.bool.config_dreamsSupported) == false) { 108 getPreferenceScreen().removePreference(mScreenSaverPreference); 109 } 110 111 mScreenTimeoutPreference = (ListPreference) findPreference(KEY_SCREEN_TIMEOUT); 112 final long currentTimeout = Settings.System.getLong(resolver, SCREEN_OFF_TIMEOUT, 113 FALLBACK_SCREEN_TIMEOUT_VALUE); 114 mScreenTimeoutPreference.setValue(String.valueOf(currentTimeout)); 115 mScreenTimeoutPreference.setOnPreferenceChangeListener(this); 116 disableUnusableTimeouts(mScreenTimeoutPreference); 117 updateTimeoutPreferenceDescription(currentTimeout); 118 119 mFontSizePref = (WarnedListPreference) findPreference(KEY_FONT_SIZE); 120 mFontSizePref.setOnPreferenceChangeListener(this); 121 mFontSizePref.setOnPreferenceClickListener(this); 122 mNotificationPulse = (CheckBoxPreference) findPreference(KEY_NOTIFICATION_PULSE); 123 if (mNotificationPulse != null 124 && getResources().getBoolean( 125 com.android.internal.R.bool.config_intrusiveNotificationLed) == false) { 126 getPreferenceScreen().removePreference(mNotificationPulse); 127 } else { 128 try { 129 mNotificationPulse.setChecked(Settings.System.getInt(resolver, 130 Settings.System.NOTIFICATION_LIGHT_PULSE) == 1); 131 mNotificationPulse.setOnPreferenceChangeListener(this); 132 } catch (SettingNotFoundException snfe) { 133 Log.e(TAG, Settings.System.NOTIFICATION_LIGHT_PULSE + " not found"); 134 } 135 } 136 137 mDisplayManager = (DisplayManager)getActivity().getSystemService( 138 Context.DISPLAY_SERVICE); 139 mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus(); 140 mWifiDisplayPreference = (Preference)findPreference(KEY_WIFI_DISPLAY); 141 if (mWifiDisplayStatus.getFeatureState() 142 == WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) { 143 getPreferenceScreen().removePreference(mWifiDisplayPreference); 144 mWifiDisplayPreference = null; 145 } 146 } 147 148 private void updateTimeoutPreferenceDescription(long currentTimeout) { 149 ListPreference preference = mScreenTimeoutPreference; 150 String summary; 151 if (currentTimeout < 0) { 152 // Unsupported value 153 summary = ""; 154 } else { 155 final CharSequence[] entries = preference.getEntries(); 156 final CharSequence[] values = preference.getEntryValues(); 157 if (entries == null || entries.length == 0) { 158 summary = ""; 159 } else { 160 int best = 0; 161 for (int i = 0; i < values.length; i++) { 162 long timeout = Long.parseLong(values[i].toString()); 163 if (currentTimeout >= timeout) { 164 best = i; 165 } 166 } 167 summary = preference.getContext().getString(R.string.screen_timeout_summary, 168 entries[best]); 169 } 170 } 171 preference.setSummary(summary); 172 } 173 174 private void disableUnusableTimeouts(ListPreference screenTimeoutPreference) { 175 final DevicePolicyManager dpm = 176 (DevicePolicyManager) getActivity().getSystemService( 177 Context.DEVICE_POLICY_SERVICE); 178 final long maxTimeout = dpm != null ? dpm.getMaximumTimeToLock(null) : 0; 179 if (maxTimeout == 0) { 180 return; // policy not enforced 181 } 182 final CharSequence[] entries = screenTimeoutPreference.getEntries(); 183 final CharSequence[] values = screenTimeoutPreference.getEntryValues(); 184 ArrayList<CharSequence> revisedEntries = new ArrayList<CharSequence>(); 185 ArrayList<CharSequence> revisedValues = new ArrayList<CharSequence>(); 186 for (int i = 0; i < values.length; i++) { 187 long timeout = Long.parseLong(values[i].toString()); 188 if (timeout <= maxTimeout) { 189 revisedEntries.add(entries[i]); 190 revisedValues.add(values[i]); 191 } 192 } 193 if (revisedEntries.size() != entries.length || revisedValues.size() != values.length) { 194 screenTimeoutPreference.setEntries( 195 revisedEntries.toArray(new CharSequence[revisedEntries.size()])); 196 screenTimeoutPreference.setEntryValues( 197 revisedValues.toArray(new CharSequence[revisedValues.size()])); 198 final int userPreference = Integer.parseInt(screenTimeoutPreference.getValue()); 199 if (userPreference <= maxTimeout) { 200 screenTimeoutPreference.setValue(String.valueOf(userPreference)); 201 } else { 202 // There will be no highlighted selection since nothing in the list matches 203 // maxTimeout. The user can still select anything less than maxTimeout. 204 // TODO: maybe append maxTimeout to the list and mark selected. 205 } 206 } 207 screenTimeoutPreference.setEnabled(revisedEntries.size() > 0); 208 } 209 210 int floatToIndex(float val) { 211 String[] indices = getResources().getStringArray(R.array.entryvalues_font_size); 212 float lastVal = Float.parseFloat(indices[0]); 213 for (int i=1; i<indices.length; i++) { 214 float thisVal = Float.parseFloat(indices[i]); 215 if (val < (lastVal + (thisVal-lastVal)*.5f)) { 216 return i-1; 217 } 218 lastVal = thisVal; 219 } 220 return indices.length-1; 221 } 222 223 public void readFontSizePreference(ListPreference pref) { 224 try { 225 mCurConfig.updateFrom(ActivityManagerNative.getDefault().getConfiguration()); 226 } catch (RemoteException e) { 227 Log.w(TAG, "Unable to retrieve font size"); 228 } 229 230 // mark the appropriate item in the preferences list 231 int index = floatToIndex(mCurConfig.fontScale); 232 pref.setValueIndex(index); 233 234 // report the current size in the summary text 235 final Resources res = getResources(); 236 String[] fontSizeNames = res.getStringArray(R.array.entries_font_size); 237 pref.setSummary(String.format(res.getString(R.string.summary_font_size), 238 fontSizeNames[index])); 239 } 240 241 @Override 242 public void onResume() { 243 super.onResume(); 244 245 RotationPolicy.registerRotationPolicyListener(getActivity(), 246 mRotationPolicyListener); 247 248 if (mWifiDisplayPreference != null) { 249 getActivity().registerReceiver(mReceiver, new IntentFilter( 250 DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)); 251 mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus(); 252 } 253 254 updateState(); 255 } 256 257 @Override 258 public void onPause() { 259 super.onPause(); 260 261 RotationPolicy.unregisterRotationPolicyListener(getActivity(), 262 mRotationPolicyListener); 263 264 if (mWifiDisplayPreference != null) { 265 getActivity().unregisterReceiver(mReceiver); 266 } 267 } 268 269 @Override 270 public Dialog onCreateDialog(int dialogId) { 271 if (dialogId == DLG_GLOBAL_CHANGE_WARNING) { 272 return Utils.buildGlobalChangeWarningDialog(getActivity(), 273 R.string.global_font_change_title, 274 new Runnable() { 275 public void run() { 276 mFontSizePref.click(); 277 } 278 }); 279 } 280 return null; 281 } 282 283 private void updateState() { 284 updateAccelerometerRotationCheckbox(); 285 readFontSizePreference(mFontSizePref); 286 updateScreenSaverSummary(); 287 updateWifiDisplaySummary(); 288 } 289 290 private void updateScreenSaverSummary() { 291 if (mScreenSaverPreference != null) { 292 mScreenSaverPreference.setSummary( 293 DreamSettings.getSummaryTextWithDreamName(getActivity())); 294 } 295 } 296 297 private void updateWifiDisplaySummary() { 298 if (mWifiDisplayPreference != null) { 299 switch (mWifiDisplayStatus.getFeatureState()) { 300 case WifiDisplayStatus.FEATURE_STATE_OFF: 301 mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_off); 302 break; 303 case WifiDisplayStatus.FEATURE_STATE_ON: 304 mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_on); 305 break; 306 case WifiDisplayStatus.FEATURE_STATE_DISABLED: 307 default: 308 mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_disabled); 309 break; 310 } 311 } 312 } 313 314 private void updateAccelerometerRotationCheckbox() { 315 if (getActivity() == null) return; 316 317 mAccelerometer.setChecked(!RotationPolicy.isRotationLocked(getActivity())); 318 } 319 320 public void writeFontSizePreference(Object objValue) { 321 try { 322 mCurConfig.fontScale = Float.parseFloat(objValue.toString()); 323 ActivityManagerNative.getDefault().updatePersistentConfiguration(mCurConfig); 324 } catch (RemoteException e) { 325 Log.w(TAG, "Unable to save font size"); 326 } 327 } 328 329 @Override 330 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { 331 if (preference == mAccelerometer) { 332 RotationPolicy.setRotationLockForAccessibility( 333 getActivity(), !mAccelerometer.isChecked()); 334 } else if (preference == mNotificationPulse) { 335 boolean value = mNotificationPulse.isChecked(); 336 Settings.System.putInt(getContentResolver(), Settings.System.NOTIFICATION_LIGHT_PULSE, 337 value ? 1 : 0); 338 return true; 339 } 340 return super.onPreferenceTreeClick(preferenceScreen, preference); 341 } 342 343 public boolean onPreferenceChange(Preference preference, Object objValue) { 344 final String key = preference.getKey(); 345 if (KEY_SCREEN_TIMEOUT.equals(key)) { 346 int value = Integer.parseInt((String) objValue); 347 try { 348 Settings.System.putInt(getContentResolver(), SCREEN_OFF_TIMEOUT, value); 349 updateTimeoutPreferenceDescription(value); 350 } catch (NumberFormatException e) { 351 Log.e(TAG, "could not persist screen timeout setting", e); 352 } 353 } 354 if (KEY_FONT_SIZE.equals(key)) { 355 writeFontSizePreference(objValue); 356 } 357 358 return true; 359 } 360 361 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 362 @Override 363 public void onReceive(Context context, Intent intent) { 364 if (intent.getAction().equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) { 365 mWifiDisplayStatus = (WifiDisplayStatus)intent.getParcelableExtra( 366 DisplayManager.EXTRA_WIFI_DISPLAY_STATUS); 367 updateWifiDisplaySummary(); 368 } 369 } 370 }; 371 372 @Override 373 public boolean onPreferenceClick(Preference preference) { 374 if (preference == mFontSizePref) { 375 if (Utils.hasMultipleUsers(getActivity())) { 376 showDialog(DLG_GLOBAL_CHANGE_WARNING); 377 return true; 378 } else { 379 mFontSizePref.click(); 380 } 381 } 382 return false; 383 } 384 } 385