1 /*
2  * Copyright (C) 2024 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.display;
18 
19 import static android.app.UiModeManager.ContrastUtils.CONTRAST_LEVEL_HIGH;
20 import static android.app.UiModeManager.ContrastUtils.CONTRAST_LEVEL_MEDIUM;
21 import static android.app.UiModeManager.ContrastUtils.CONTRAST_LEVEL_STANDARD;
22 import static android.app.UiModeManager.ContrastUtils.toContrastLevel;
23 
24 import android.app.UiModeManager;
25 import android.content.Context;
26 
27 import androidx.annotation.NonNull;
28 
29 import com.android.settings.R;
30 import com.android.settings.accessibility.Flags;
31 import com.android.settings.core.BasePreferenceController;
32 
33 import java.util.Map;
34 
35 /**
36  * Controller for {@link ColorContrastFragment}.
37  */
38 public class ContrastPreferenceController extends BasePreferenceController {
39 
ContrastPreferenceController(@onNull Context context, @NonNull String preferenceKey)40     public ContrastPreferenceController(@NonNull Context context, @NonNull String preferenceKey) {
41         super(context, preferenceKey);
42     }
43 
44     @Override
getAvailabilityStatus()45     public int getAvailabilityStatus() {
46         return Flags.enableColorContrastControl() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
47     }
48 
49     @Override
getSummary()50     public CharSequence getSummary() {
51         Map<Integer, Integer> mContrastLevelToResId = Map.ofEntries(
52                 Map.entry(CONTRAST_LEVEL_STANDARD, R.string.contrast_default),
53                 Map.entry(CONTRAST_LEVEL_MEDIUM, R.string.contrast_medium),
54                 Map.entry(CONTRAST_LEVEL_HIGH, R.string.contrast_high)
55         );
56 
57         float contrastLevel = mContext.getSystemService(UiModeManager.class).getContrast();
58         return mContext.getString(mContrastLevelToResId.get(toContrastLevel(contrastLevel)));
59     }
60 }
61