/*
* 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.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.hardware.display.DisplayManager;
import android.hardware.display.WifiDisplayStatus;
import android.os.Bundle;
import android.os.Handler;
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.util.Log;
import com.android.internal.view.RotationPolicy;
import com.android.settings.cyanogenmod.DisplayRotation;
import com.android.settings.Utils;
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_FONT_SIZE = "font_size";
private static final String KEY_SCREEN_SAVER = "screensaver";
private static final String KEY_WIFI_DISPLAY = "wifi_display";
private static final String KEY_DISPLAY_ROTATION = "display_rotation";
private static final String KEY_WAKEUP_CATEGORY = "category_wakeup_options";
private static final String KEY_VOLUME_WAKE = "pref_volume_wake";
// Strings used for building the summary
private static final String ROTATION_ANGLE_0 = "0";
private static final String ROTATION_ANGLE_90 = "90";
private static final String ROTATION_ANGLE_180 = "180";
private static final String ROTATION_ANGLE_270 = "270";
private static final int DLG_GLOBAL_CHANGE_WARNING = 1;
private DisplayManager mDisplayManager;
private CheckBoxPreference mVolumeWake;
private PreferenceScreen mDisplayRotationPreference;
private WarnedListPreference mFontSizePref;
private final Configuration mCurConfig = new Configuration();
private ListPreference mScreenTimeoutPreference;
private Preference mScreenSaverPreference;
private WifiDisplayStatus mWifiDisplayStatus;
private Preference mWifiDisplayPreference;
private ContentObserver mAccelerometerRotationObserver =
new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange) {
updateDisplayRotationPreferenceDescription();
}
};
private final RotationPolicy.RotationPolicyListener mRotationPolicyListener =
new RotationPolicy.RotationPolicyListener() {
@Override
public void onChange() {
updateDisplayRotationPreferenceDescription();
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ContentResolver resolver = getActivity().getContentResolver();
addPreferencesFromResource(R.xml.display_settings);
mDisplayRotationPreference = (PreferenceScreen) findPreference(KEY_DISPLAY_ROTATION);
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);
updateDisplayRotationPreferenceDescription();
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;
}
mVolumeWake = (CheckBoxPreference) findPreference(KEY_VOLUME_WAKE);
if (mVolumeWake != null) {
if (!getResources().getBoolean(R.bool.config_show_volumeRockerWake)
|| !Utils.hasVolumeRocker(getActivity())) {
getPreferenceScreen().removePreference(mVolumeWake);
getPreferenceScreen().removePreference((PreferenceCategory) findPreference(KEY_WAKEUP_CATEGORY));
} else {
mVolumeWake.setChecked(Settings.System.getInt(resolver,
Settings.System.VOLUME_WAKE_SCREEN, 0) == 1);
}
}
}
private void updateDisplayRotationPreferenceDescription() {
if (mDisplayRotationPreference == null) {
// The preference was removed, do nothing
return;
}
// We have a preference, lets update the summary
StringBuilder summary = new StringBuilder();
Boolean rotationEnabled = Settings.System.getInt(getContentResolver(),
Settings.System.ACCELEROMETER_ROTATION, 0) != 0;
int mode = Settings.System.getInt(getContentResolver(),
Settings.System.ACCELEROMETER_ROTATION_ANGLES,
DisplayRotation.ROTATION_0_MODE|DisplayRotation.ROTATION_90_MODE|DisplayRotation.ROTATION_270_MODE);
if (!rotationEnabled) {
summary.append(getString(R.string.display_rotation_disabled));
} else {
ArrayList<String> rotationList = new ArrayList<String>();
String delim = "";
if ((mode & DisplayRotation.ROTATION_0_MODE) != 0) {
rotationList.add(ROTATION_ANGLE_0);
}
if ((mode & DisplayRotation.ROTATION_90_MODE) != 0) {
rotationList.add(ROTATION_ANGLE_90);
}
if ((mode & DisplayRotation.ROTATION_180_MODE) != 0) {
rotationList.add(ROTATION_ANGLE_180);
}
if ((mode & DisplayRotation.ROTATION_270_MODE) != 0) {
rotationList.add(ROTATION_ANGLE_270);
}
for (int i = 0; i < rotationList.size(); i++) {
summary.append(delim).append(rotationList.get(i));
if ((rotationList.size() - i) > 2) {
delim = ", ";
} else {
delim = " & ";
}
}
summary.append(" " + getString(R.string.display_rotation_unit));
}
mDisplayRotationPreference.setSummary(summary);
}
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) {
screenTimeoutPreference.setEntries(
revisedEntries.toArray(new CharSequence[revisedEntries.size()]));
screenTimeoutPreference.setEntryValues(
revisedValues.toArray(new CharSequence[revisedValues.size()]));
final int userPreference = Integer.parseInt(screenTimeoutPreference.getValue());
if (userPreference <= maxTimeout) {
screenTimeoutPreference.setValue(String.valueOf(userPreference));
} 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();
updateDisplayRotationPreferenceDescription();
RotationPolicy.registerRotationPolicyListener(getActivity(),
mRotationPolicyListener);
// Display rotation observer
getContentResolver().registerContentObserver(
Settings.System.getUriFor(Settings.System.ACCELEROMETER_ROTATION), true,
mAccelerometerRotationObserver);
if (mWifiDisplayPreference != null) {
getActivity().registerReceiver(mReceiver, new IntentFilter(
DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED));
mWifiDisplayStatus = mDisplayManager.getWifiDisplayStatus();
}
updateState();
}
@Override
public void onPause() {
super.onPause();
RotationPolicy.unregisterRotationPolicyListener(getActivity(),
mRotationPolicyListener);
// Display rotation observer
getContentResolver().unregisterContentObserver(mAccelerometerRotationObserver);
if (mWifiDisplayPreference != null) {
getActivity().unregisterReceiver(mReceiver);
}
}
@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() {
readFontSizePreference(mFontSizePref);
updateScreenSaverSummary();
updateWifiDisplaySummary();
}
private void updateScreenSaverSummary() {
if (mScreenSaverPreference != null) {
mScreenSaverPreference.setSummary(
DreamSettings.getSummaryTextWithDreamName(getActivity()));
}
}
private void updateWifiDisplaySummary() {
if (mWifiDisplayPreference != null) {
switch (mWifiDisplayStatus.getFeatureState()) {
case WifiDisplayStatus.FEATURE_STATE_OFF:
mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_off);
break;
case WifiDisplayStatus.FEATURE_STATE_ON:
mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_on);
break;
case WifiDisplayStatus.FEATURE_STATE_DISABLED:
default:
mWifiDisplayPreference.setSummary(R.string.wifi_display_summary_disabled);
break;
}
}
}
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");
}
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (preference == mVolumeWake) {
Settings.System.putInt(getContentResolver(), Settings.System.VOLUME_WAKE_SCREEN,
mVolumeWake.isChecked() ? 1 : 0);
return true;
}
return super.onPreferenceTreeClick(preferenceScreen, preference);
}
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;
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED)) {
mWifiDisplayStatus = (WifiDisplayStatus)intent.getParcelableExtra(
DisplayManager.EXTRA_WIFI_DISPLAY_STATUS);
updateWifiDisplaySummary();
}
}
};
@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;
}
}