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- /*
- * Copyright (C) 2010 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.settings;
- import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;
- import android.app.ActivityManagerNative;
- import android.app.Dialog;
- import android.app.admin.DevicePolicyManager;
- import android.content.ContentResolver;
- import android.content.Context;
- import android.content.res.Configuration;
- import android.content.res.Resources;
- import android.os.Bundle;
- import android.os.RemoteException;
- import android.preference.CheckBoxPreference;
- import android.preference.ListPreference;
- import android.preference.Preference;
- import android.preference.Preference.OnPreferenceClickListener;
- import android.preference.PreferenceCategory;
- import android.preference.PreferenceScreen;
- import android.provider.Settings;
- import android.provider.Settings.SettingNotFoundException;
- import android.util.Log;
- import com.android.internal.view.RotationPolicy;
- import com.android.settings.DreamSettings;
- import java.util.ArrayList;
- public class DisplaySettings extends SettingsPreferenceFragment implements
- Preference.OnPreferenceChangeListener, OnPreferenceClickListener {
- private static final String TAG = "DisplaySettings";
- /** If there is no setting in the provider, use this. */
- private static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000;
- private static final String KEY_SCREEN_TIMEOUT = "screen_timeout";
- private static final String KEY_ACCELEROMETER = "accelerometer";
- private static final String KEY_FONT_SIZE = "font_size";
- private static final String KEY_LIGHT_OPTIONS = "category_light_options";
- private static final String KEY_NOTIFICATION_PULSE = "notification_pulse";
- private static final String KEY_BATTERY_LIGHT = "battery_light";
- private static final String KEY_SCREEN_SAVER = "screensaver";
- private static final int DLG_GLOBAL_CHANGE_WARNING = 1;
- private CheckBoxPreference mAccelerometer;
- private WarnedListPreference mFontSizePref;
- private PreferenceCategory mLightOptions;
- private PreferenceScreen mNotificationPulse;
- private PreferenceScreen mBatteryPulse;
- private final Configuration mCurConfig = new Configuration();
- private ListPreference mScreenTimeoutPreference;
- private Preference mScreenSaverPreference;
- private final RotationPolicy.RotationPolicyListener mRotationPolicyListener =
- new RotationPolicy.RotationPolicyListener() {
- @Override
- public void onChange() {
- updateAccelerometerRotationCheckbox();
- }
- };
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- ContentResolver resolver = getActivity().getContentResolver();
- addPreferencesFromResource(R.xml.display_settings);
- PreferenceScreen prefSet = getPreferenceScreen();
- mAccelerometer = (CheckBoxPreference) findPreference(KEY_ACCELEROMETER);
- mAccelerometer.setPersistent(false);
- if (!RotationPolicy.isRotationSupported(getActivity())
- || RotationPolicy.isRotationLockToggleSupported(getActivity())) {
- // If rotation lock is supported, then we do not provide this option in
- // Display settings. However, is still available in Accessibility settings,
- // if the device supports rotation.
- getPreferenceScreen().removePreference(mAccelerometer);
- }
- mScreenSaverPreference = findPreference(KEY_SCREEN_SAVER);
- if (mScreenSaverPreference != null
- && getResources().getBoolean(
- com.android.internal.R.bool.config_dreamsSupported) == false) {
- getPreferenceScreen().removePreference(mScreenSaverPreference);
- }
- mScreenTimeoutPreference = (ListPreference) findPreference(KEY_SCREEN_TIMEOUT);
- final long currentTimeout = Settings.System.getLong(resolver, SCREEN_OFF_TIMEOUT,
- FALLBACK_SCREEN_TIMEOUT_VALUE);
- mScreenTimeoutPreference.setValue(String.valueOf(currentTimeout));
- mScreenTimeoutPreference.setOnPreferenceChangeListener(this);
- disableUnusableTimeouts(mScreenTimeoutPreference);
- updateTimeoutPreferenceDescription(currentTimeout);
- mFontSizePref = (WarnedListPreference) findPreference(KEY_FONT_SIZE);
- mFontSizePref.setOnPreferenceChangeListener(this);
- mFontSizePref.setOnPreferenceClickListener(this);
- mDisplayManager = (DisplayManager)getActivity().getSystemService(
- Context.DISPLAY_SERVICE);
- mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
- mWifiDisplayPreference = (Preference)findPreference(KEY_WIFI_DISPLAY);
- if (mWifiDisplayStatus.getFeatureState()
- == WifiDisplayStatus.FEATURE_STATE_UNAVAILABLE) {
- getPreferenceScreen().removePreference(mWifiDisplayPreference);
- mWifiDisplayPreference = null;
- }
- mLightOptions = (PreferenceCategory) prefSet.findPreference(KEY_LIGHT_OPTIONS);
- mNotificationPulse = (PreferenceScreen) findPreference(KEY_NOTIFICATION_PULSE);
- if (mNotificationPulse != null) {
- if (!getResources().getBoolean(
- com.android.internal.R.bool.config_intrusiveNotificationLed)) {
- mLightOptions.removePreference(mNotificationPulse);
- } else {
- updateLightPulseDescription();
- }
- }
- mBatteryPulse = (PreferenceScreen) findPreference(KEY_BATTERY_LIGHT);
- if (mBatteryPulse != null) {
- if (getResources().getBoolean(
- com.android.internal.R.bool.config_intrusiveBatteryLed) == false) {
- mLightOptions.removePreference(mBatteryPulse);
- } else {
- updateBatteryPulseDescription();
- }
- }
- }
- private void updateTimeoutPreferenceDescription(long currentTimeout) {
- ListPreference preference = mScreenTimeoutPreference;
- String summary;
- if (currentTimeout < 0) {
- // Unsupported value
- summary = "";
- } else {
- final CharSequence[] entries = preference.getEntries();
- final CharSequence[] values = preference.getEntryValues();
- if (entries == null || entries.length == 0) {
- summary = "";
- } else {
- int best = 0;
- for (int i = 0; i < values.length; i++) {
- long timeout = Long.parseLong(values[i].toString());
- if (currentTimeout >= timeout) {
- best = i;
- }
- }
- summary = preference.getContext().getString(R.string.screen_timeout_summary,
- entries[best]);
- }
- }
- preference.setSummary(summary);
- }
- private void disableUnusableTimeouts(ListPreference screenTimeoutPreference) {
- final DevicePolicyManager dpm =
- (DevicePolicyManager) getActivity().getSystemService(
- Context.DEVICE_POLICY_SERVICE);
- final long maxTimeout = dpm != null ? dpm.getMaximumTimeToLock(null) : 0;
- if (maxTimeout == 0) {
- return; // policy not enforced
- }
- final CharSequence[] entries = screenTimeoutPreference.getEntries();
- final CharSequence[] values = screenTimeoutPreference.getEntryValues();
- ArrayList<CharSequence> revisedEntries = new ArrayList<CharSequence>();
- ArrayList<CharSequence> revisedValues = new ArrayList<CharSequence>();
- for (int i = 0; i < values.length; i++) {
- long timeout = Long.parseLong(values[i].toString());
- if (timeout <= maxTimeout) {
- revisedEntries.add(entries[i]);
- revisedValues.add(values[i]);
- }
- }
- if (revisedEntries.size() != entries.length || revisedValues.size() != values.length) {
- final int userPreference = Integer.parseInt(screenTimeoutPreference.getValue());
- screenTimeoutPreference.setEntries(
- revisedEntries.toArray(new CharSequence[revisedEntries.size()]));
- screenTimeoutPreference.setEntryValues(
- revisedValues.toArray(new CharSequence[revisedValues.size()]));
- if (userPreference <= maxTimeout) {
- screenTimeoutPreference.setValue(String.valueOf(userPreference));
- } else if (revisedValues.size() > 0
- && Long.parseLong(revisedValues.get(revisedValues.size() - 1).toString())
- == maxTimeout) {
- // If the last one happens to be the same as the max timeout, select that
- screenTimeoutPreference.setValue(String.valueOf(maxTimeout));
- } else {
- // There will be no highlighted selection since nothing in the list matches
- // maxTimeout. The user can still select anything less than maxTimeout.
- // TODO: maybe append maxTimeout to the list and mark selected.
- }
- }
- screenTimeoutPreference.setEnabled(revisedEntries.size() > 0);
- }
- int floatToIndex(float val) {
- String[] indices = getResources().getStringArray(R.array.entryvalues_font_size);
- float lastVal = Float.parseFloat(indices[0]);
- for (int i=1; i<indices.length; i++) {
- float thisVal = Float.parseFloat(indices[i]);
- if (val < (lastVal + (thisVal-lastVal)*.5f)) {
- return i-1;
- }
- lastVal = thisVal;
- }
- return indices.length-1;
- }
- public void readFontSizePreference(ListPreference pref) {
- try {
- mCurConfig.updateFrom(ActivityManagerNative.getDefault().getConfiguration());
- } catch (RemoteException e) {
- Log.w(TAG, "Unable to retrieve font size");
- }
- // mark the appropriate item in the preferences list
- int index = floatToIndex(mCurConfig.fontScale);
- pref.setValueIndex(index);
- // report the current size in the summary text
- final Resources res = getResources();
- String[] fontSizeNames = res.getStringArray(R.array.entries_font_size);
- pref.setSummary(String.format(res.getString(R.string.summary_font_size),
- fontSizeNames[index]));
- }
- @Override
- public void onResume() {
- super.onResume();
- RotationPolicy.registerRotationPolicyListener(getActivity(),
- mRotationPolicyListener);
- updateState();
- }
- @Override
- public void onPause() {
- super.onPause();
- RotationPolicy.unregisterRotationPolicyListener(getActivity(),
- mRotationPolicyListener);
- }
- @Override
- public Dialog onCreateDialog(int dialogId) {
- if (dialogId == DLG_GLOBAL_CHANGE_WARNING) {
- return Utils.buildGlobalChangeWarningDialog(getActivity(),
- R.string.global_font_change_title,
- new Runnable() {
- public void run() {
- mFontSizePref.click();
- }
- });
- }
- return null;
- }
- private void updateState() {
- updateAccelerometerRotationCheckbox();
- readFontSizePreference(mFontSizePref);
- updateScreenSaverSummary();
- }
- private void updateScreenSaverSummary() {
- if (mScreenSaverPreference != null) {
- mScreenSaverPreference.setSummary(
- DreamSettings.getSummaryTextWithDreamName(getActivity()));
- }
- }
- private void updateAccelerometerRotationCheckbox() {
- if (getActivity() == null) return;
- mAccelerometer.setChecked(!RotationPolicy.isRotationLocked(getActivity()));
- }
- public void writeFontSizePreference(Object objValue) {
- try {
- mCurConfig.fontScale = Float.parseFloat(objValue.toString());
- ActivityManagerNative.getDefault().updatePersistentConfiguration(mCurConfig);
- } catch (RemoteException e) {
- Log.w(TAG, "Unable to save font size");
- }
- }
- private void updateLightPulseDescription() {
- if (Settings.System.getInt(getActivity().getContentResolver(),
- Settings.System.NOTIFICATION_LIGHT_PULSE, 0) == 1) {
- mNotificationPulse.setSummary(getString(R.string.notification_light_enabled));
- } else {
- mNotificationPulse.setSummary(getString(R.string.notification_light_disabled));
- }
- }
- private void updateBatteryPulseDescription() {
- if (Settings.System.getInt(getActivity().getContentResolver(),
- Settings.System.BATTERY_LIGHT_ENABLED, 1) == 1) {
- mBatteryPulse.setSummary(getString(R.string.notification_light_enabled));
- } else {
- mBatteryPulse.setSummary(getString(R.string.notification_light_disabled));
- }
- }
- @Override
- public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
- if (preference == mAccelerometer) {
- RotationPolicy.setRotationLockForAccessibility(
- getActivity(), !mAccelerometer.isChecked());
- }
- return super.onPreferenceTreeClick(preferenceScreen, preference);
- }
- @Override
- public boolean onPreferenceChange(Preference preference, Object objValue) {
- final String key = preference.getKey();
- if (KEY_SCREEN_TIMEOUT.equals(key)) {
- int value = Integer.parseInt((String) objValue);
- try {
- Settings.System.putInt(getContentResolver(), SCREEN_OFF_TIMEOUT, value);
- updateTimeoutPreferenceDescription(value);
- } catch (NumberFormatException e) {
- Log.e(TAG, "could not persist screen timeout setting", e);
- }
- }
- if (KEY_FONT_SIZE.equals(key)) {
- writeFontSizePreference(objValue);
- }
- return true;
- }
- @Override
- public boolean onPreferenceClick(Preference preference) {
- if (preference == mFontSizePref) {
- if (Utils.hasMultipleUsers(getActivity())) {
- showDialog(DLG_GLOBAL_CHANGE_WARNING);
- return true;
- } else {
- mFontSizePref.click();
- }
- }
- return false;
- }
- }
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