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.content.res.Resources; 21 22 import com.android.settingslib.display.DisplayDensityUtils; 23 24 import java.util.Arrays; 25 import java.util.Collections; 26 import java.util.stream.Collectors; 27 28 /** 29 * Data class for storing the configurations related to the display size. 30 */ 31 class DisplaySizeData extends PreviewSizeData<Integer> { 32 private final DisplayDensityUtils mDensity; 33 DisplaySizeData(Context context)34 DisplaySizeData(Context context) { 35 super(context); 36 37 mDensity = new DisplayDensityUtils(getContext()); 38 final int initialIndex = mDensity.getCurrentIndexForDefaultDisplay(); 39 if (initialIndex < 0) { 40 // Failed to obtain default density, which means we failed to 41 // connect to the window manager service. Just use the current 42 // density and don't let the user change anything. 43 final Resources resources = getContext().getResources(); 44 final int densityDpi = resources.getDisplayMetrics().densityDpi; 45 setDefaultValue(densityDpi); 46 setInitialIndex(0); 47 setValues(Collections.singletonList(densityDpi)); 48 } else { 49 setDefaultValue(mDensity.getDefaultDensityForDefaultDisplay()); 50 setInitialIndex(initialIndex); 51 setValues(Arrays.stream(mDensity.getDefaultDisplayDensityValues()).boxed() 52 .collect(Collectors.toList())); 53 } 54 } 55 56 @Override commit(int currentProgress)57 void commit(int currentProgress) { 58 final int densityDpi = getValues().get(currentProgress); 59 if (densityDpi == getDefaultValue()) { 60 mDensity.clearForcedDisplayDensity(); 61 } else { 62 mDensity.setForcedDisplayDensity(currentProgress); 63 } 64 } 65 } 66