1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 package com.android.settings.display; 15 16 import android.content.Context; 17 import android.content.res.Resources; 18 import android.provider.Settings; 19 import android.support.v7.preference.Preference; 20 21 import com.android.settings.R; 22 import com.android.settings.accessibility.ToggleFontSizePreferenceFragment; 23 import com.android.settings.core.PreferenceControllerMixin; 24 import com.android.settingslib.core.AbstractPreferenceController; 25 26 public class FontSizePreferenceController extends AbstractPreferenceController implements 27 PreferenceControllerMixin { 28 29 private static final String KEY_FONT_SIZE = "font_size"; 30 31 public FontSizePreferenceController(Context context) { 32 super(context); 33 } 34 35 @Override 36 public boolean isAvailable() { 37 return true; 38 } 39 40 @Override 41 public String getPreferenceKey() { 42 return KEY_FONT_SIZE; 43 } 44 45 @Override 46 public void updateState(Preference preference) { 47 final float currentScale = Settings.System.getFloat(mContext.getContentResolver(), 48 Settings.System.FONT_SCALE, 1.0f); 49 final Resources res = mContext.getResources(); 50 final String[] entries = res.getStringArray(R.array.entries_font_size); 51 final String[] strEntryValues = res.getStringArray(R.array.entryvalues_font_size); 52 final int index = ToggleFontSizePreferenceFragment.fontSizeValueToIndex(currentScale, 53 strEntryValues); 54 preference.setSummary(entries[index]); 55 } 56 } 57
