1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.accessibility;
import android.content.ContentResolver;
import android.content.Context;
import android.database.ContentObserver;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Looper;
import android.provider.Settings;
import android.widget.ImageView;
import androidx.annotation.VisibleForTesting;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnPause;
import com.android.settingslib.core.lifecycle.events.OnResume;
import com.android.settingslib.widget.LayoutPreference;
/** Preference controller that controls the preview effect in accessibility button page. */
public class AccessibilityButtonPreviewPreferenceController extends BasePreferenceController
implements LifecycleObserver, OnResume, OnPause {
private static final int SMALL_SIZE = 0;
private static final float DEFAULT_OPACITY = 0.55f;
private static final int DEFAULT_SIZE = 0;
private final ContentResolver mContentResolver;
@VisibleForTesting
final ContentObserver mContentObserver;
private FloatingMenuLayerDrawable mFloatingMenuPreviewDrawable;
@VisibleForTesting
ImageView mPreview;
public AccessibilityButtonPreviewPreferenceController(Context context, String preferenceKey) {
super(context, preferenceKey);
mContentResolver = context.getContentResolver();
mContentObserver = new ContentObserver(new Handler(Looper.getMainLooper())) {
@Override
public void onChange(boolean selfChange) {
updatePreviewPreference();
}
};
}
@Override
public int getAvailabilityStatus() {
return AVAILABLE;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
final LayoutPreference preference = screen.findPreference(getPreferenceKey());
mPreview = preference.findViewById(R.id.preview_image);
updatePreviewPreference();
}
@Override
public void onResume() {
mContentResolver.registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_BUTTON_MODE),
/* notifyForDescendants= */ false, mContentObserver);
mContentResolver.registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_FLOATING_MENU_SIZE),
/* notifyForDescendants= */ false, mContentObserver);
mContentResolver.registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.ACCESSIBILITY_FLOATING_MENU_OPACITY),
/* notifyForDescendants= */ false, mContentObserver);
}
@Override
public void onPause() {
mContentResolver.unregisterContentObserver(mContentObserver);
}
private void updatePreviewPreference() {
if (AccessibilityUtil.isFloatingMenuEnabled(mContext)) {
final int size = Settings.Secure.getInt(mContentResolver,
Settings.Secure.ACCESSIBILITY_FLOATING_MENU_SIZE, DEFAULT_SIZE);
final int opacity = (int) (Settings.Secure.getFloat(mContentResolver,
Settings.Secure.ACCESSIBILITY_FLOATING_MENU_OPACITY, DEFAULT_OPACITY) * 100);
final int floatingMenuIconId = (size == SMALL_SIZE)
? R.drawable.accessibility_button_preview_small_floating_menu
: R.drawable.accessibility_button_preview_large_floating_menu;
mPreview.setImageDrawable(getFloatingMenuPreviewDrawable(floatingMenuIconId, opacity));
// Only change opacity(alpha) would not invoke redraw view, need to invalidate manually.
mPreview.invalidate();
} else {
mPreview.setImageDrawable(
mContext.getDrawable(R.drawable.accessibility_button_navigation));
}
}
private Drawable getFloatingMenuPreviewDrawable(int resId, int opacity) {
if (mFloatingMenuPreviewDrawable == null) {
mFloatingMenuPreviewDrawable = FloatingMenuLayerDrawable.createLayerDrawable(
mContext, resId, opacity);
} else {
mFloatingMenuPreviewDrawable.updateLayerDrawable(mContext, resId, opacity);
}
return mFloatingMenuPreviewDrawable;
}
}
|
