628431de91
Use the current Locale upon initialization of the TTS engine. Retrieve the default engine value from the TextToSpeech.Engine class instead of a hard-coded value in TextToSpeechSettings.
403 lines
16 KiB
Java
403 lines
16 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings;
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import static android.provider.Settings.Secure.TTS_USE_DEFAULTS;
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import static android.provider.Settings.Secure.TTS_DEFAULT_RATE;
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import static android.provider.Settings.Secure.TTS_DEFAULT_LANG;
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import static android.provider.Settings.Secure.TTS_DEFAULT_COUNTRY;
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import static android.provider.Settings.Secure.TTS_DEFAULT_VARIANT;
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import static android.provider.Settings.Secure.TTS_DEFAULT_SYNTH;
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import android.content.ContentResolver;
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import android.content.Intent;
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import android.content.pm.ActivityInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.os.Bundle;
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import android.preference.ListPreference;
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import android.preference.Preference;
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import android.preference.PreferenceActivity;
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import android.preference.CheckBoxPreference;
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import android.provider.Settings;
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import android.provider.Settings.SettingNotFoundException;
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import android.speech.tts.TextToSpeech;
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import android.util.Log;
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import java.util.List;
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import java.util.Locale;
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import java.util.StringTokenizer;
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public class TextToSpeechSettings extends PreferenceActivity implements
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Preference.OnPreferenceChangeListener, Preference.OnPreferenceClickListener,
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TextToSpeech.OnInitListener {
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private static final String TAG = "TextToSpeechSettings";
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private static final String KEY_TTS_PLAY_EXAMPLE = "tts_play_example";
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private static final String KEY_TTS_INSTALL_DATA = "tts_install_data";
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private static final String KEY_TTS_USE_DEFAULT = "toggle_use_default_tts_settings";
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private static final String KEY_TTS_DEFAULT_RATE = "tts_default_rate";
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private static final String KEY_TTS_DEFAULT_LANG = "tts_default_lang";
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private static final String KEY_TTS_DEFAULT_COUNTRY = "tts_default_country";
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private static final String KEY_TTS_DEFAULT_VARIANT = "tts_default_variant";
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private static final String LOCALE_DELIMITER = "-";
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private static final String FALLBACK_TTS_DEFAULT_SYNTH =
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TextToSpeech.Engine.FALLBACK_TTS_DEFAULT_SYNTH;
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private Preference mPlayExample = null;
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private Preference mInstallData = null;
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private CheckBoxPreference mUseDefaultPref = null;
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private ListPreference mDefaultRatePref = null;
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private ListPreference mDefaultLocPref = null;
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private String mDefaultLanguage = null;
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private String mDefaultCountry = null;
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private String mDefaultLocVariant = null;
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private String mDefaultEng = "";
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private boolean mEnableDemo = false;
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private TextToSpeech mTts = null;
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/**
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* Request code (arbitrary value) for voice data check through
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* startActivityForResult.
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*/
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private static final int VOICE_DATA_INTEGRITY_CHECK = 1977;
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/**
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* Request code (arbitrary value) for voice data installation through
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* startActivityForResult.
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*/
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private static final int VOICE_DATA_INSTALLATION = 1980;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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addPreferencesFromResource(R.xml.tts_settings);
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mEnableDemo = false;
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initClickers();
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initDefaultSettings();
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}
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@Override
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protected void onStart() {
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super.onStart();
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// whenever we return to this screen, we don't know the state of the
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// system, so we have to recheck that we can play the demo, or it must be disabled.
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// TODO make the TTS service listen to "changes in the system", i.e. sd card un/mount
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initClickers();
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updateWidgetState();
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checkVoiceData();
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}
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@Override
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protected void onDestroy() {
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super.onDestroy();
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if (mTts != null) {
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mTts.shutdown();
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}
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}
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private void initClickers() {
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mPlayExample = findPreference(KEY_TTS_PLAY_EXAMPLE);
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mPlayExample.setOnPreferenceClickListener(this);
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mInstallData = findPreference(KEY_TTS_INSTALL_DATA);
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mInstallData.setOnPreferenceClickListener(this);
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}
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private void initDefaultSettings() {
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ContentResolver resolver = getContentResolver();
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int intVal = 0;
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// Find the default TTS values in the settings, initialize and store the
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// settings if they are not found.
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// "Use Defaults"
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mUseDefaultPref = (CheckBoxPreference) findPreference(KEY_TTS_USE_DEFAULT);
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try {
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intVal = Settings.Secure.getInt(resolver, TTS_USE_DEFAULTS);
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} catch (SettingNotFoundException e) {
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// "use default" setting not found, initialize it
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intVal = TextToSpeech.Engine.FALLBACK_TTS_USE_DEFAULTS;
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Settings.Secure.putInt(resolver, TTS_USE_DEFAULTS, intVal);
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}
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mUseDefaultPref.setChecked(intVal == 1);
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mUseDefaultPref.setOnPreferenceChangeListener(this);
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// Default engine
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String engine = Settings.Secure.getString(resolver, TTS_DEFAULT_SYNTH);
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if (engine == null) {
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// TODO move FALLBACK_TTS_DEFAULT_SYNTH to TextToSpeech
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engine = FALLBACK_TTS_DEFAULT_SYNTH;
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Settings.Secure.putString(resolver, TTS_DEFAULT_SYNTH, engine);
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}
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mDefaultEng = engine;
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// Default rate
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mDefaultRatePref = (ListPreference) findPreference(KEY_TTS_DEFAULT_RATE);
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try {
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intVal = Settings.Secure.getInt(resolver, TTS_DEFAULT_RATE);
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} catch (SettingNotFoundException e) {
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// default rate setting not found, initialize it
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intVal = TextToSpeech.Engine.FALLBACK_TTS_DEFAULT_RATE;
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Settings.Secure.putInt(resolver, TTS_DEFAULT_RATE, intVal);
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}
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mDefaultRatePref.setValue(String.valueOf(intVal));
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mDefaultRatePref.setOnPreferenceChangeListener(this);
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// Default language / country / variant : these three values map to a single ListPref
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// representing the matching Locale
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String language = null;
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String country = null;
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String variant = null;
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mDefaultLocPref = (ListPreference) findPreference(KEY_TTS_DEFAULT_LANG);
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language = Settings.Secure.getString(resolver, TTS_DEFAULT_LANG);
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if (language == null) {
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// the default language property isn't set, use that of the current locale
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Locale currentLocale = Locale.getDefault();
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language = currentLocale.getISO3Language();
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country = currentLocale.getISO3Country();
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variant = currentLocale.getVariant();
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Settings.Secure.putString(resolver, TTS_DEFAULT_LANG, language);
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Settings.Secure.putString(resolver, TTS_DEFAULT_COUNTRY, country);
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Settings.Secure.putString(resolver, TTS_DEFAULT_VARIANT, variant);
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}
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mDefaultLanguage = language;
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if (country == null) {
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// country wasn't initialized yet because a default language was found
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country = Settings.Secure.getString(resolver, KEY_TTS_DEFAULT_COUNTRY);
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if (country == null) {
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// default country setting not found, initialize it, as well as the variant;
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Locale currentLocale = Locale.getDefault();
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country = currentLocale.getISO3Country();
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variant = currentLocale.getVariant();
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Settings.Secure.putString(resolver, TTS_DEFAULT_COUNTRY, country);
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Settings.Secure.putString(resolver, TTS_DEFAULT_VARIANT, variant);
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}
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}
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mDefaultCountry = country;
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if (variant == null) {
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// variant wasn't initialized yet because a default country was found
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variant = Settings.Secure.getString(resolver, KEY_TTS_DEFAULT_VARIANT);
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if (variant == null) {
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// default variant setting not found, initialize it
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Locale currentLocale = Locale.getDefault();
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variant = currentLocale.getVariant();
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Settings.Secure.putString(resolver, TTS_DEFAULT_VARIANT, variant);
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}
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}
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mDefaultLocVariant = variant;
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setDefaultLocalePref(language, country, variant);
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mDefaultLocPref.setOnPreferenceChangeListener(this);
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}
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/**
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* Ask the current default engine to launch the matching CHECK_TTS_DATA activity
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* to check the required TTS files are properly installed.
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*/
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private void checkVoiceData() {
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PackageManager pm = getPackageManager();
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Intent intent = new Intent();
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intent.setAction("android.intent.action.CHECK_TTS_DATA");
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List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, 0);
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// query only the package that matches that of the default engine
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for (int i = 0; i < resolveInfos.size(); i++) {
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ActivityInfo currentActivityInfo = resolveInfos.get(i).activityInfo;
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if (mDefaultEng.equals(currentActivityInfo.packageName)) {
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intent.setClassName(mDefaultEng, currentActivityInfo.name);
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this.startActivityForResult(intent, VOICE_DATA_INTEGRITY_CHECK);
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}
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}
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}
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/**
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* Ask the current default engine to launch the matching INSTALL_TTS_DATA activity
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* so the required TTS files are properly installed.
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*/
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private void installVoiceData() {
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PackageManager pm = getPackageManager();
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Intent intent = new Intent();
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intent.setAction("android.intent.action.INSTALL_TTS_DATA");
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List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, 0);
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// query only the package that matches that of the default engine
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for (int i = 0; i < resolveInfos.size(); i++) {
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ActivityInfo currentActivityInfo = resolveInfos.get(i).activityInfo;
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if (mDefaultEng.equals(currentActivityInfo.packageName)) {
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intent.setClassName(mDefaultEng, currentActivityInfo.name);
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this.startActivityForResult(intent, VOICE_DATA_INSTALLATION);
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}
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}
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}
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/**
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* Called when the TTS engine is initialized.
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*/
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public void onInit(int status) {
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if (status == TextToSpeech.TTS_SUCCESS) {
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Log.v(TAG, "TTS engine for settings screen initialized.");
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mEnableDemo = true;
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} else {
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Log.v(TAG, "TTS engine for settings screen failed to initialize successfully.");
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mEnableDemo = false;
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}
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updateWidgetState();
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}
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/**
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* Called when voice data integrity check returns
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*/
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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if (requestCode == VOICE_DATA_INTEGRITY_CHECK) {
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if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
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Log.v(TAG, "Voice data check passed");
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if (mTts == null) {
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mTts = new TextToSpeech(this, this);
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mTts.setLanguage(Locale.getDefault());
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}
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} else {
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Log.v(TAG, "Voice data check failed");
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mEnableDemo = false;
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updateWidgetState();
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}
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}
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}
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public boolean onPreferenceChange(Preference preference, Object objValue) {
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if (KEY_TTS_USE_DEFAULT.equals(preference.getKey())) {
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// "Use Defaults"
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int value = (Boolean)objValue ? 1 : 0;
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Settings.Secure.putInt(getContentResolver(), TTS_USE_DEFAULTS,
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value);
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Log.i(TAG, "TTS use default settings is "+objValue.toString());
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} else if (KEY_TTS_DEFAULT_RATE.equals(preference.getKey())) {
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// Default rate
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int value = Integer.parseInt((String) objValue);
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try {
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Settings.Secure.putInt(getContentResolver(),
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TTS_DEFAULT_RATE, value);
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if (mTts != null) {
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mTts.setSpeechRate((float)(value/100.0f));
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}
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Log.i(TAG, "TTS default rate is "+value);
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} catch (NumberFormatException e) {
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Log.e(TAG, "could not persist default TTS rate setting", e);
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}
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} else if (KEY_TTS_DEFAULT_LANG.equals(preference.getKey())) {
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// Default locale
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ContentResolver resolver = getContentResolver();
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parseLocaleInfo((String) objValue);
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Settings.Secure.putString(resolver, TTS_DEFAULT_LANG, mDefaultLanguage);
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Settings.Secure.putString(resolver, TTS_DEFAULT_COUNTRY, mDefaultCountry);
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Settings.Secure.putString(resolver, TTS_DEFAULT_VARIANT, mDefaultLocVariant);
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Log.v(TAG, "TTS default lang/country/variant set to "
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+ mDefaultLanguage + "/" + mDefaultCountry + "/" + mDefaultLocVariant);
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if (mTts != null) {
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mTts.setLanguage(new Locale(mDefaultLanguage, mDefaultCountry));
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}
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}
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return true;
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}
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/**
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* Called when mPlayExample or mInstallData is clicked
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*/
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public boolean onPreferenceClick(Preference preference) {
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if (preference == mPlayExample) {
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// Play example
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if (mTts != null) {
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mTts.speak(getResources().getString(R.string.tts_demo),
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TextToSpeech.TTS_QUEUE_FLUSH, null);
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}
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return true;
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}
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if (preference == mInstallData) {
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installVoiceData();
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// quit this activity so it needs to be restarted after installation of the voice data
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finish();
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return true;
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}
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return false;
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}
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private void updateWidgetState() {
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mPlayExample.setEnabled(mEnableDemo);
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mUseDefaultPref.setEnabled(mEnableDemo);
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mDefaultRatePref.setEnabled(mEnableDemo);
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mDefaultLocPref.setEnabled(mEnableDemo);
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mInstallData.setEnabled(!mEnableDemo);
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}
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private void parseLocaleInfo(String locale) {
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StringTokenizer tokenizer = new StringTokenizer(locale, LOCALE_DELIMITER);
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mDefaultLanguage = "";
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mDefaultCountry = "";
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mDefaultLocVariant = "";
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if (tokenizer.hasMoreTokens()) {
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mDefaultLanguage = tokenizer.nextToken().trim();
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}
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if (tokenizer.hasMoreTokens()) {
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mDefaultCountry = tokenizer.nextToken().trim();
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}
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if (tokenizer.hasMoreTokens()) {
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mDefaultLocVariant = tokenizer.nextToken().trim();
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}
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}
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private void setDefaultLocalePref(String language, String country, String variant) {
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// build a string from the default lang/country/variant trio,
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String localeString = new String(language);
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if (country.compareTo("") != 0) {
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localeString += LOCALE_DELIMITER + country;
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} else {
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localeString += LOCALE_DELIMITER + " ";
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}
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if (variant.compareTo("") != 0) {
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localeString += LOCALE_DELIMITER + variant;
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}
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if (mDefaultLocPref.findIndexOfValue(localeString) > -1) {
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mDefaultLocPref.setValue(localeString);
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} else {
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mDefaultLocPref.setValueIndex(0);
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}
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Log.v(TAG, "In initDefaultSettings: localeString=" + localeString);
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}
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}
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