1 /*
2  * Copyright (C) 2013 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.util.AttributeSet;
21 import android.view.View;
22 import android.view.accessibility.CaptioningManager.CaptionStyle;
23 import android.widget.TextView;
24 
25 import com.android.internal.widget.SubtitleView;
26 import com.android.settings.R;
27 
28 /** Grid preference that allows the user to pick a captioning preset type. */
29 public class PresetPreference extends ListDialogPreference {
30 
31     private static final float DEFAULT_FONT_SIZE = 32f;
32     private final CaptionHelper mCaptionHelper;
33 
PresetPreference(Context context, AttributeSet attrs)34     public PresetPreference(Context context, AttributeSet attrs) {
35         super(context, attrs);
36         mCaptionHelper = new CaptionHelper(context);
37 
38         setDialogLayoutResource(R.layout.grid_picker_dialog);
39         setListItemLayoutResource(R.layout.preset_picker_item);
40     }
41 
42     @Override
shouldDisableDependents()43     public boolean shouldDisableDependents() {
44         return getValue() != CaptionStyle.PRESET_CUSTOM
45                 || super.shouldDisableDependents();
46     }
47 
48     @Override
onBindListItem(View view, int index)49     protected void onBindListItem(View view, int index) {
50         final View previewViewport = view.findViewById(R.id.preview_viewport);
51         final SubtitleView previewText = view.findViewById(R.id.preview);
52         final int value = getValueAt(index);
53         mCaptionHelper.applyCaptionProperties(previewText, previewViewport, value);
54 
55         final float density = getContext().getResources().getDisplayMetrics().density;
56         previewText.setTextSize(DEFAULT_FONT_SIZE * density);
57 
58         final CharSequence title = getTitleAt(index);
59         if (title != null) {
60             final TextView summary = view.findViewById(R.id.summary);
61             summary.setText(title);
62         }
63     }
64 }
65