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 com.android.internal.view.RotationPolicy; 20 import com.android.settings.notification.DropDownPreference; 21 import com.android.settings.notification.DropDownPreference.Callback; 22 import com.android.settings.search.BaseSearchIndexProvider; 23 import com.android.settings.search.Indexable; 24 25 import static android.provider.Settings.Secure.DOZE_ENABLED; 26 import static android.provider.Settings.Secure.WAKE_GESTURE_ENABLED; 27 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE; 28 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC; 29 import static android.provider.Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL; 30 import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT; 31 32 import android.app.Activity; 33 import android.app.ActivityManagerNative; 34 import android.app.Dialog; 35 import android.app.admin.DevicePolicyManager; 36 import android.content.ContentResolver; 37 import android.content.Context; 38 import android.content.res.Configuration; 39 import android.content.res.Resources; 40 import android.hardware.Sensor; 41 import android.hardware.SensorManager; 42 import android.os.Build; 43 import android.os.Bundle; 44 import android.os.RemoteException; 45 import android.os.SystemProperties; 46 import android.preference.ListPreference; 47 import android.preference.Preference; 48 import android.preference.Preference.OnPreferenceClickListener; 49 import android.preference.PreferenceScreen; 50 import android.preference.SwitchPreference; 51 import android.provider.SearchIndexableResource; 52 import android.provider.Settings; 53 import android.text.TextUtils; 54 import android.util.Log; 55 56 import java.util.ArrayList; 57 import java.util.List; 58 59 public class DisplaySettings extends SettingsPreferenceFragment implements 60 Preference.OnPreferenceChangeListener, OnPreferenceClickListener, Indexable { 61 private static final String TAG = "DisplaySettings"; 62 63 /** If there is no setting in the provider, use this. */ 64 private static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000; 65 66 private static final String KEY_SCREEN_TIMEOUT = "screen_timeout"; 67 private static final String KEY_FONT_SIZE = "font_size"; 68 private static final String KEY_SCREEN_SAVER = "screensaver"; 69 private static final String KEY_LIFT_TO_WAKE = "lift_to_wake"; 70 private static final String KEY_DOZE = "doze"; 71 private static final String KEY_AUTO_BRIGHTNESS = "auto_brightness"; 72 private static final String KEY_AUTO_ROTATE = "auto_rotate"; 73 74 private static final int DLG_GLOBAL_CHANGE_WARNING = 1; 75 76 private WarnedListPreference mFontSizePref; 77 78 private final Configuration mCurConfig = new Configuration(); 79 80 private ListPreference mScreenTimeoutPreference; 81 private Preference mScreenSaverPreference; 82 private SwitchPreference mLiftToWakePreference; 83 private SwitchPreference mDozePreference; 84 private SwitchPreference mAutoBrightnessPreference; 85 86 @Override 87 public void onCreate(Bundle savedInstanceState) { 88 super.onCreate(savedInstanceState); 89 final Activity activity = getActivity(); 90 final ContentResolver resolver = activity.getContentResolver(); 91 92 addPreferencesFromResource(R.xml.display_settings); 93 94 mScreenSaverPreference = findPreference(KEY_SCREEN_SAVER); 95 if (mScreenSaverPreference != null 96 && getResources().getBoolean( 97 com.android.internal.R.bool.config_dreamsSupported) == false) { 98 getPreferenceScreen().removePreference(mScreenSaverPreference); 99 } 100 101 mScreenTimeoutPreference = (ListPreference) findPreference(KEY_SCREEN_TIMEOUT); 102 final long currentTimeout = Settings.System.getLong(resolver, SCREEN_OFF_TIMEOUT, 103 FALLBACK_SCREEN_TIMEOUT_VALUE); 104 mScreenTimeoutPreference.setValue(String.valueOf(currentTimeout)); 105 mScreenTimeoutPreference.setOnPreferenceChangeListener(this); 106 disableUnusableTimeouts(mScreenTimeoutPreference); 107 updateTimeoutPreferenceDescription(currentTimeout); 108 109 mFontSizePref = (WarnedListPreference) findPreference(KEY_FONT_SIZE); 110 mFontSizePref.setOnPreferenceChangeListener(this); 111 mFontSizePref.setOnPreferenceClickListener(this); 112 113 if (isAutomaticBrightnessAvailable(getResources())) { 114 mAutoBrightnessPreference = (SwitchPreference) findPreference(KEY_AUTO_BRIGHTNESS); 115 mAutoBrightnessPreference.setOnPreferenceChangeListener(this); 116 } else { 117 removePreference(KEY_AUTO_BRIGHTNESS); 118 } 119 120 if (isLiftToWakeAvailable(activity)) { 121 mLiftToWakePreference = (SwitchPreference) findPreference(KEY_LIFT_TO_WAKE); 122 mLiftToWakePreference.setOnPreferenceChangeListener(this); 123 } else { 124 removePreference(KEY_LIFT_TO_WAKE); 125 } 126 127 if (isDozeAvailable(activity)) { 128 mDozePreference = (SwitchPreference) findPreference(KEY_DOZE); 129 mDozePreference.setOnPreferenceChangeListener(this); 130 } else { 131 removePreference(KEY_DOZE); 132 } 133 134 if (RotationPolicy.isRotationLockToggleVisible(activity)) { 135 DropDownPreference rotatePreference = 136 (DropDownPreference) findPreference(KEY_AUTO_ROTATE); 137 rotatePreference.addItem(activity.getString(R.string.display_auto_rotate_rotate), 138 false); 139 int rotateLockedResourceId; 140 // The following block sets the string used when rotation is locked. 141 // If the device locks specifically to portrait or landscape (rather than current 142 // rotation), then we use a different string to include this information. 143 if (allowAllRotations(activity)) { 144 rotateLockedResourceId = R.string.display_auto_rotate_stay_in_current; 145 } else { 146 if (RotationPolicy.getRotationLockOrientation(activity) 147 == Configuration.ORIENTATION_PORTRAIT) { 148 rotateLockedResourceId = 149 R.string.display_auto_rotate_stay_in_portrait; 150 } else { 151 rotateLockedResourceId = 152 R.string.display_auto_rotate_stay_in_landscape; 153 } 154 } 155 rotatePreference.addItem(activity.getString(rotateLockedResourceId), true); 156 rotatePreference.setSelectedItem(RotationPolicy.isRotationLocked(activity) ? 157 1 : 0); 158 rotatePreference.setCallback(new Callback() { 159 @Override 160 public boolean onItemSelected(int pos, Object value) { 161 RotationPolicy.setRotationLock(activity, (Boolean) value); 162 return true; 163 } 164 }); 165 } else { 166 removePreference(KEY_AUTO_ROTATE); 167 } 168 } 169 170 private static boolean allowAllRotations(Context context) { 171 return Resources.getSystem().getBoolean( 172 com.android.internal.R.bool.config_allowAllRotations); 173 } 174 175 private static boolean isLiftToWakeAvailable(Context context) { 176 SensorManager sensors = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE); 177 return sensors != null && sensors.getDefaultSensor(Sensor.TYPE_WAKE_GESTURE) != null; 178 } 179 180 private static boolean isDozeAvailable(Context context) { 181 String name = Build.IS_DEBUGGABLE ? SystemProperties.get("debug.doze.component") : null; 182 if (TextUtils.isEmpty(name)) { 183 name = context.getResources().getString( 184 com.android.internal.R.string.config_dozeComponent); 185 } 186 return !TextUtils.isEmpty(name); 187 } 188 189 private static boolean isAutomaticBrightnessAvailable(Resources res) { 190 return res.getBoolean(com.android.internal.R.bool.config_automatic_brightness_available); 191 } 192 193 private void updateTimeoutPreferenceDescription(long currentTimeout) { 194 ListPreference preference = mScreenTimeoutPreference; 195 String summary; 196 if (currentTimeout < 0) { 197 // Unsupported value 198 summary = ""; 199 } else { 200 final CharSequence[] entries = preference.getEntries(); 201 final CharSequence[] values = preference.getEntryValues(); 202 if (entries == null || entries.length == 0) { 203 summary = ""; 204 } else { 205 int best = 0; 206 for (int i = 0; i < values.length; i++) { 207 long timeout = Long.parseLong(values[i].toString()); 208 if (currentTimeout >= timeout) { 209 best = i; 210 } 211 } 212 summary = preference.getContext().getString(R.string.screen_timeout_summary, 213 entries[best]); 214 } 215 } 216 preference.setSummary(summary); 217 } 218 219 private void disableUnusableTimeouts(ListPreference screenTimeoutPreference) { 220 final DevicePolicyManager dpm = 221 (DevicePolicyManager) getActivity().getSystemService( 222 Context.DEVICE_POLICY_SERVICE); 223 final long maxTimeout = dpm != null ? dpm.getMaximumTimeToLock(null) : 0; 224 if (maxTimeout == 0) { 225 return; // policy not enforced 226 } 227 final CharSequence[] entries = screenTimeoutPreference.getEntries(); 228 final CharSequence[] values = screenTimeoutPreference.getEntryValues(); 229 ArrayList<CharSequence> revisedEntries = new ArrayList<CharSequence>(); 230 ArrayList<CharSequence> revisedValues = new ArrayList<CharSequence>(); 231 for (int i = 0; i < values.length; i++) { 232 long timeout = Long.parseLong(values[i].toString()); 233 if (timeout <= maxTimeout) { 234 revisedEntries.add(entries[i]); 235 revisedValues.add(values[i]); 236 } 237 } 238 if (revisedEntries.size() != entries.length || revisedValues.size() != values.length) { 239 final int userPreference = Integer.parseInt(screenTimeoutPreference.getValue()); 240 screenTimeoutPreference.setEntries( 241 revisedEntries.toArray(new CharSequence[revisedEntries.size()])); 242 screenTimeoutPreference.setEntryValues( 243 revisedValues.toArray(new CharSequence[revisedValues.size()])); 244 if (userPreference <= maxTimeout) { 245 screenTimeoutPreference.setValue(String.valueOf(userPreference)); 246 } else if (revisedValues.size() > 0 247 && Long.parseLong(revisedValues.get(revisedValues.size() - 1).toString()) 248 == maxTimeout) { 249 // If the last one happens to be the same as the max timeout, select that 250 screenTimeoutPreference.setValue(String.valueOf(maxTimeout)); 251 } else { 252 // There will be no highlighted selection since nothing in the list matches 253 // maxTimeout. The user can still select anything less than maxTimeout. 254 // TODO: maybe append maxTimeout to the list and mark selected. 255 } 256 } 257 screenTimeoutPreference.setEnabled(revisedEntries.size() > 0); 258 } 259 260 int floatToIndex(float val) { 261 String[] indices = getResources().getStringArray(R.array.entryvalues_font_size); 262 float lastVal = Float.parseFloat(indices[0]); 263 for (int i=1; i<indices.length; i++) { 264 float thisVal = Float.parseFloat(indices[i]); 265 if (val < (lastVal + (thisVal-lastVal)*.5f)) { 266 return i-1; 267 } 268 lastVal = thisVal; 269 } 270 return indices.length-1; 271 } 272 273 public void readFontSizePreference(ListPreference pref) { 274 try { 275 mCurConfig.updateFrom(ActivityManagerNative.getDefault().getConfiguration()); 276 } catch (RemoteException e) { 277 Log.w(TAG, "Unable to retrieve font size"); 278 } 279 280 // mark the appropriate item in the preferences list 281 int index = floatToIndex(mCurConfig.fontScale); 282 pref.setValueIndex(index); 283 284 // report the current size in the summary text 285 final Resources res = getResources(); 286 String[] fontSizeNames = res.getStringArray(R.array.entries_font_size); 287 pref.setSummary(String.format(res.getString(R.string.summary_font_size), 288 fontSizeNames[index])); 289 } 290 291 @Override 292 public void onResume() { 293 super.onResume(); 294 updateState(); 295 } 296 297 @Override 298 public Dialog onCreateDialog(int dialogId) { 299 if (dialogId == DLG_GLOBAL_CHANGE_WARNING) { 300 return Utils.buildGlobalChangeWarningDialog(getActivity(), 301 R.string.global_font_change_title, 302 new Runnable() { 303 public void run() { 304 mFontSizePref.click(); 305 } 306 }); 307 } 308 return null; 309 } 310 311 private void updateState() { 312 readFontSizePreference(mFontSizePref); 313 updateScreenSaverSummary(); 314 315 // Update auto brightness if it is available. 316 if (mAutoBrightnessPreference != null) { 317 int brightnessMode = Settings.System.getInt(getContentResolver(), 318 SCREEN_BRIGHTNESS_MODE, SCREEN_BRIGHTNESS_MODE_MANUAL); 319 mAutoBrightnessPreference.setChecked(brightnessMode != SCREEN_BRIGHTNESS_MODE_MANUAL); 320 } 321 322 // Update lift-to-wake if it is available. 323 if (mLiftToWakePreference != null) { 324 int value = Settings.Secure.getInt(getContentResolver(), WAKE_GESTURE_ENABLED, 0); 325 mLiftToWakePreference.setChecked(value != 0); 326 } 327 328 // Update doze if it is available. 329 if (mDozePreference != null) { 330 int value = Settings.Secure.getInt(getContentResolver(), DOZE_ENABLED, 1); 331 mDozePreference.setChecked(value != 0); 332 } 333 } 334 335 private void updateScreenSaverSummary() { 336 if (mScreenSaverPreference != null) { 337 mScreenSaverPreference.setSummary( 338 DreamSettings.getSummaryTextWithDreamName(getActivity())); 339 } 340 } 341 342 public void writeFontSizePreference(Object objValue) { 343 try { 344 mCurConfig.fontScale = Float.parseFloat(objValue.toString()); 345 ActivityManagerNative.getDefault().updatePersistentConfiguration(mCurConfig); 346 } catch (RemoteException e) { 347 Log.w(TAG, "Unable to save font size"); 348 } 349 } 350 351 @Override 352 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { 353 return super.onPreferenceTreeClick(preferenceScreen, preference); 354 } 355 356 @Override 357 public boolean onPreferenceChange(Preference preference, Object objValue) { 358 final String key = preference.getKey(); 359 if (KEY_SCREEN_TIMEOUT.equals(key)) { 360 try { 361 int value = Integer.parseInt((String) objValue); 362 Settings.System.putInt(getContentResolver(), SCREEN_OFF_TIMEOUT, value); 363 updateTimeoutPreferenceDescription(value); 364 } catch (NumberFormatException e) { 365 Log.e(TAG, "could not persist screen timeout setting", e); 366 } 367 } 368 if (KEY_FONT_SIZE.equals(key)) { 369 writeFontSizePreference(objValue); 370 } 371 if (preference == mAutoBrightnessPreference) { 372 boolean auto = (Boolean) objValue; 373 Settings.System.putInt(getContentResolver(), SCREEN_BRIGHTNESS_MODE, 374 auto ? SCREEN_BRIGHTNESS_MODE_AUTOMATIC : SCREEN_BRIGHTNESS_MODE_MANUAL); 375 } 376 if (preference == mLiftToWakePreference) { 377 boolean value = (Boolean) objValue; 378 Settings.Secure.putInt(getContentResolver(), WAKE_GESTURE_ENABLED, value ? 1 : 0); 379 } 380 if (preference == mDozePreference) { 381 boolean value = (Boolean) objValue; 382 Settings.Secure.putInt(getContentResolver(), DOZE_ENABLED, value ? 1 : 0); 383 } 384 return true; 385 } 386 387 @Override 388 public boolean onPreferenceClick(Preference preference) { 389 if (preference == mFontSizePref) { 390 if (Utils.hasMultipleUsers(getActivity())) { 391 showDialog(DLG_GLOBAL_CHANGE_WARNING); 392 return true; 393 } else { 394 mFontSizePref.click(); 395 } 396 } 397 return false; 398 } 399 400 public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 401 new BaseSearchIndexProvider() { 402 @Override 403 public List<SearchIndexableResource> getXmlResourcesToIndex(Context context, 404 boolean enabled) { 405 ArrayList<SearchIndexableResource> result = 406 new ArrayList<SearchIndexableResource>(); 407 408 SearchIndexableResource sir = new SearchIndexableResource(context); 409 sir.xmlResId = R.xml.display_settings; 410 result.add(sir); 411 412 return result; 413 } 414 415 @Override 416 public List<String> getNonIndexableKeys(Context context) { 417 ArrayList<String> result = new ArrayList<String>(); 418 if (!context.getResources().getBoolean( 419 com.android.internal.R.bool.config_dreamsSupported)) { 420 result.add(KEY_SCREEN_SAVER); 421 } 422 if (!isAutomaticBrightnessAvailable(context.getResources())) { 423 result.add(KEY_AUTO_BRIGHTNESS); 424 } 425 if (!isLiftToWakeAvailable(context)) { 426 result.add(KEY_LIFT_TO_WAKE); 427 } 428 if (!isDozeAvailable(context)) { 429 result.add(KEY_DOZE); 430 } 431 if (!RotationPolicy.isRotationLockToggleVisible(context)) { 432 result.add(KEY_AUTO_ROTATE); 433 } 434 return result; 435 } 436 }; 437 } 438
