1 /*
2  * Copyright (C) 2014 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.systemui.statusbar.policy;
18 
19 import android.annotation.NonNull;
20 import android.content.res.Resources;
21 import android.util.ArraySet;
22 import android.view.ContextThemeWrapper;
23 import android.view.LayoutInflater;
24 import android.view.View;
25 import android.widget.FrameLayout;
26 
27 import com.android.internal.util.Preconditions;
28 import com.android.systemui.R;
29 import com.android.systemui.statusbar.phone.NotificationPanelView;
30 import com.android.systemui.statusbar.phone.StatusBarWindowView;
31 
32 import java.util.function.Consumer;
33 
34 /**
35  * Controls showing and hiding of the brightness mirror.
36  */
37 public class BrightnessMirrorController
38         implements CallbackController<BrightnessMirrorController.BrightnessMirrorListener> {
39 
40     private final StatusBarWindowView mStatusBarWindow;
41     private final Consumer<Boolean> mVisibilityCallback;
42     private final NotificationPanelView mNotificationPanel;
43     private final ArraySet<BrightnessMirrorListener> mBrightnessMirrorListeners = new ArraySet<>();
44     private final int[] mInt2Cache = new int[2];
45     private View mBrightnessMirror;
46 
BrightnessMirrorController(StatusBarWindowView statusBarWindow, @NonNull Consumer<Boolean> visibilityCallback)47     public BrightnessMirrorController(StatusBarWindowView statusBarWindow,
48             @NonNull Consumer<Boolean> visibilityCallback) {
49         mStatusBarWindow = statusBarWindow;
50         mBrightnessMirror = statusBarWindow.findViewById(R.id.brightness_mirror);
51         mNotificationPanel = statusBarWindow.findViewById(R.id.notification_panel);
52         mNotificationPanel.setPanelAlphaEndAction(() -> {
53             mBrightnessMirror.setVisibility(View.INVISIBLE);
54         });
55         mVisibilityCallback = visibilityCallback;
56     }
57 
showMirror()58     public void showMirror() {
59         mBrightnessMirror.setVisibility(View.VISIBLE);
60         mVisibilityCallback.accept(true);
61         mNotificationPanel.setPanelAlpha(0, true /* animate */);
62     }
63 
hideMirror()64     public void hideMirror() {
65         mVisibilityCallback.accept(false);
66         mNotificationPanel.setPanelAlpha(255, true /* animate */);
67     }
68 
setLocation(View original)69     public void setLocation(View original) {
70         original.getLocationInWindow(mInt2Cache);
71 
72         // Original is slightly larger than the mirror, so make sure to use the center for the
73         // positioning.
74         int originalX = mInt2Cache[0] + original.getWidth() / 2;
75         int originalY = mInt2Cache[1] + original.getHeight() / 2;
76         mBrightnessMirror.setTranslationX(0);
77         mBrightnessMirror.setTranslationY(0);
78         mBrightnessMirror.getLocationInWindow(mInt2Cache);
79         int mirrorX = mInt2Cache[0] + mBrightnessMirror.getWidth() / 2;
80         int mirrorY = mInt2Cache[1] + mBrightnessMirror.getHeight() / 2;
81         mBrightnessMirror.setTranslationX(originalX - mirrorX);
82         mBrightnessMirror.setTranslationY(originalY - mirrorY);
83     }
84 
getMirror()85     public View getMirror() {
86         return mBrightnessMirror;
87     }
88 
updateResources()89     public void updateResources() {
90         FrameLayout.LayoutParams lp =
91                 (FrameLayout.LayoutParams) mBrightnessMirror.getLayoutParams();
92         Resources r = mBrightnessMirror.getResources();
93         lp.width = r.getDimensionPixelSize(R.dimen.qs_panel_width);
94         lp.height = r.getDimensionPixelSize(R.dimen.brightness_mirror_height);
95         lp.gravity = r.getInteger(R.integer.notification_panel_layout_gravity);
96         mBrightnessMirror.setLayoutParams(lp);
97     }
98 
onOverlayChanged()99     public void onOverlayChanged() {
100         reinflate();
101     }
102 
onDensityOrFontScaleChanged()103     public void onDensityOrFontScaleChanged() {
104         reinflate();
105     }
106 
reinflate()107     private void reinflate() {
108         ContextThemeWrapper qsThemeContext =
109                 new ContextThemeWrapper(mBrightnessMirror.getContext(), R.style.qs_theme);
110         int index = mStatusBarWindow.indexOfChild(mBrightnessMirror);
111         mStatusBarWindow.removeView(mBrightnessMirror);
112         mBrightnessMirror = LayoutInflater.from(qsThemeContext).inflate(
113                 R.layout.brightness_mirror, mStatusBarWindow, false);
114         mStatusBarWindow.addView(mBrightnessMirror, index);
115 
116         for (int i = 0; i < mBrightnessMirrorListeners.size(); i++) {
117             mBrightnessMirrorListeners.valueAt(i).onBrightnessMirrorReinflated(mBrightnessMirror);
118         }
119     }
120 
121     @Override
addCallback(BrightnessMirrorListener listener)122     public void addCallback(BrightnessMirrorListener listener) {
123         Preconditions.checkNotNull(listener);
124         mBrightnessMirrorListeners.add(listener);
125     }
126 
127     @Override
removeCallback(BrightnessMirrorListener listener)128     public void removeCallback(BrightnessMirrorListener listener) {
129         mBrightnessMirrorListeners.remove(listener);
130     }
131 
132     public interface BrightnessMirrorListener {
onBrightnessMirrorReinflated(View brightnessMirror)133         void onBrightnessMirrorReinflated(View brightnessMirror);
134     }
135 }
136