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.view.accessibility.CaptioningManager;
21 
22 import com.android.settings.R;
23 import com.android.settings.core.BasePreferenceController;
24 
25 import com.google.common.primitives.Floats;
26 import com.google.common.primitives.Ints;
27 
28 /** Controller that shows the captioning scale and style summary. */
29 public class CaptioningAppearancePreferenceController extends BasePreferenceController {
30 
31     private final CaptioningManager mCaptioningManager;
32 
CaptioningAppearancePreferenceController(Context context, String preferenceKey)33     public CaptioningAppearancePreferenceController(Context context, String preferenceKey) {
34         super(context, preferenceKey);
35         mCaptioningManager = context.getSystemService(CaptioningManager.class);
36     }
37 
38     @Override
getAvailabilityStatus()39     public int getAvailabilityStatus() {
40         return AVAILABLE;
41     }
42 
43     @Override
getSummary()44     public CharSequence getSummary() {
45         return mContext.getString(R.string.preference_summary_default_combination,
46                 geFontScaleSummary(), getPresetSummary());
47     }
48 
getFontScaleValuesArray()49     private float[] getFontScaleValuesArray() {
50         final String[] fontScaleValuesStrArray = mContext.getResources().getStringArray(
51                 R.array.captioning_font_size_selector_values);
52         final int length = fontScaleValuesStrArray.length;
53         final float[] fontScaleValuesArray = new float[length];
54         for (int i = 0; i < length; ++i) {
55             fontScaleValuesArray[i] = Float.parseFloat(fontScaleValuesStrArray[i]);
56         }
57         return fontScaleValuesArray;
58     }
59 
geFontScaleSummary()60     private CharSequence geFontScaleSummary() {
61         final float[] fontScaleValuesArray = getFontScaleValuesArray();
62         final String[] fontScaleSummaries = mContext.getResources().getStringArray(
63                 R.array.captioning_font_size_selector_titles);
64         final float fontScale = mCaptioningManager.getFontScale();
65         final int idx = Floats.indexOf(fontScaleValuesArray, fontScale);
66         return fontScaleSummaries[idx == /* not exist */ -1 ? 0 : idx];
67     }
68 
getPresetSummary()69     private CharSequence getPresetSummary() {
70         final int[] presetValuesArray = mContext.getResources().getIntArray(
71                 R.array.captioning_preset_selector_values);
72         final String[] presetSummaries = mContext.getResources().getStringArray(
73                 R.array.captioning_preset_selector_titles);
74         final int preset = mCaptioningManager.getRawUserStyle();
75         final int idx = Ints.indexOf(presetValuesArray, preset);
76         return presetSummaries[idx];
77     }
78 }
79