1 /* 2 * Copyright (C) 2022 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.accessibility; 18 19 import android.content.Context; 20 import android.provider.Settings; 21 import android.view.accessibility.CaptioningManager; 22 23 import androidx.preference.ListPreference; 24 import androidx.preference.Preference; 25 26 import com.android.settings.core.BasePreferenceController; 27 28 /** Preference controller for captioning font size. */ 29 public class CaptioningFontSizeController extends BasePreferenceController 30 implements Preference.OnPreferenceChangeListener { 31 32 private final CaptioningManager mCaptioningManager; 33 private final CaptionHelper mCaptionHelper; 34 CaptioningFontSizeController(Context context, String preferenceKey)35 public CaptioningFontSizeController(Context context, String preferenceKey) { 36 super(context, preferenceKey); 37 mCaptioningManager = context.getSystemService(CaptioningManager.class); 38 mCaptionHelper = new CaptionHelper(context); 39 } 40 41 @Override getAvailabilityStatus()42 public int getAvailabilityStatus() { 43 return AVAILABLE; 44 } 45 46 @Override updateState(Preference preference)47 public void updateState(Preference preference) { 48 super.updateState(preference); 49 final ListPreference listPreference = (ListPreference) preference; 50 final float fontSize = mCaptioningManager.getFontScale(); 51 52 listPreference.setValue(Float.toString(fontSize)); 53 } 54 55 @Override onPreferenceChange(Preference preference, Object newValue)56 public boolean onPreferenceChange(Preference preference, Object newValue) { 57 Settings.Secure.putFloat( 58 mContext.getContentResolver(), Settings.Secure.ACCESSIBILITY_CAPTIONING_FONT_SCALE, 59 Float.parseFloat((String) newValue)); 60 mCaptionHelper.setEnabled(true); 61 return true; 62 } 63 } 64