1 /*
2  * Copyright (C) 2019 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.phone;
18 
19 import android.annotation.NonNull;
20 import android.content.Context;
21 import android.content.res.Configuration;
22 import android.content.res.Resources;
23 import android.graphics.Rect;
24 import android.view.View;
25 import android.view.ViewTreeObserver;
26 import android.view.ViewTreeObserver.OnComputeInternalInsetsListener;
27 
28 import com.android.systemui.Dependency;
29 import com.android.systemui.bubbles.BubbleController;
30 import com.android.systemui.statusbar.policy.ConfigurationController;
31 import com.android.systemui.statusbar.policy.ConfigurationController.ConfigurationListener;
32 
33 /**
34  * Manages what parts of the status bar are touchable. Clients are primarily UI that displays in the
35  * status bar even though the UI doesn't look like part of the status bar.
36  */
37 public final class StatusBarTouchableRegionManager implements
38         OnComputeInternalInsetsListener, ConfigurationListener {
39 
40     private final BubbleController mBubbleController = Dependency.get(BubbleController.class);
41     private final Context mContext;
42     private final HeadsUpManagerPhone mHeadsUpManager;
43     private boolean mIsStatusBarExpanded = false;
44     private boolean mShouldAdjustInsets = false;
45     private final StatusBar mStatusBar;
46     private int mStatusBarHeight;
47     private final View mStatusBarWindowView;
48     private boolean mForceCollapsedUntilLayout = false;
49     private final StatusBarWindowController mStatusBarWindowController;
50 
StatusBarTouchableRegionManager(@onNull Context context, HeadsUpManagerPhone headsUpManager, @NonNull StatusBar statusBar, @NonNull View statusBarWindowView)51     public StatusBarTouchableRegionManager(@NonNull Context context,
52                                            HeadsUpManagerPhone headsUpManager,
53                                            @NonNull StatusBar statusBar,
54                                            @NonNull View statusBarWindowView) {
55         mContext = context;
56         mHeadsUpManager = headsUpManager;
57         mStatusBar = statusBar;
58         mStatusBarWindowView = statusBarWindowView;
59         mStatusBarWindowController = Dependency.get(StatusBarWindowController.class);
60 
61         initResources();
62 
63         mBubbleController.setBubbleStateChangeListener((hasBubbles) -> {
64             updateTouchableRegion();
65         });
66 
67         mStatusBarWindowController.setForcePluginOpenListener((forceOpen) -> {
68             updateTouchableRegion();
69         });
70         Dependency.get(ConfigurationController.class).addCallback(this);
71     }
72 
73     /**
74      * Set the touchable portion of the status bar based on what elements are visible.
75      */
updateTouchableRegion()76     public void updateTouchableRegion() {
77         boolean hasCutoutInset = (mStatusBarWindowView != null)
78                 && (mStatusBarWindowView.getRootWindowInsets() != null)
79                 && (mStatusBarWindowView.getRootWindowInsets().getDisplayCutout() != null);
80         boolean shouldObserve =
81                 mHeadsUpManager.hasPinnedHeadsUp() || mHeadsUpManager.isHeadsUpGoingAway()
82                         || mBubbleController.hasBubbles()
83                         || mForceCollapsedUntilLayout
84                         || hasCutoutInset
85                         || mStatusBarWindowController.getForcePluginOpen();
86         if (shouldObserve == mShouldAdjustInsets) {
87             return;
88         }
89 
90         if (shouldObserve) {
91             mStatusBarWindowView.getViewTreeObserver().addOnComputeInternalInsetsListener(this);
92             mStatusBarWindowView.requestLayout();
93         } else {
94             mStatusBarWindowView.getViewTreeObserver().removeOnComputeInternalInsetsListener(this);
95         }
96         mShouldAdjustInsets = shouldObserve;
97     }
98 
99     /**
100      * Calls {@code updateTouchableRegion()} after a layout pass completes.
101      */
updateTouchableRegionAfterLayout()102     public void updateTouchableRegionAfterLayout() {
103         mForceCollapsedUntilLayout = true;
104         mStatusBarWindowView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
105             @Override
106             public void onLayoutChange(View v, int left, int top, int right, int bottom,
107                                        int oldLeft,
108                                        int oldTop, int oldRight, int oldBottom) {
109                 if (mStatusBarWindowView.getHeight() <= mStatusBarHeight) {
110                     mStatusBarWindowView.removeOnLayoutChangeListener(this);
111                     mForceCollapsedUntilLayout = false;
112                     updateTouchableRegion();
113                 }
114             }
115         });
116     }
117 
118     /**
119      * Notify that the status bar panel gets expanded or collapsed.
120      *
121      * @param isExpanded True to notify expanded, false to notify collapsed.
122      */
setIsStatusBarExpanded(boolean isExpanded)123     public void setIsStatusBarExpanded(boolean isExpanded) {
124         if (isExpanded != mIsStatusBarExpanded) {
125             mIsStatusBarExpanded = isExpanded;
126             if (isExpanded) {
127                 // make sure our state is sane
128                 mForceCollapsedUntilLayout = false;
129             }
130             updateTouchableRegion();
131         }
132     }
133 
134     @Override
onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info)135     public void onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo info) {
136         if (mIsStatusBarExpanded || mStatusBar.isBouncerShowing()) {
137             // The touchable region is always the full area when expanded
138             return;
139         }
140 
141         mHeadsUpManager.updateTouchableRegion(info);
142 
143         Rect bubbleRect = mBubbleController.getTouchableRegion();
144         if (bubbleRect != null) {
145             info.touchableRegion.union(bubbleRect);
146         }
147     }
148 
149     @Override
onConfigChanged(Configuration newConfig)150     public void onConfigChanged(Configuration newConfig) {
151         initResources();
152     }
153 
154     @Override
onDensityOrFontScaleChanged()155     public void onDensityOrFontScaleChanged() {
156         initResources();
157     }
158 
159     @Override
onOverlayChanged()160     public void onOverlayChanged() {
161         initResources();
162     }
163 
initResources()164     private void initResources() {
165         Resources resources = mContext.getResources();
166         mStatusBarHeight = resources.getDimensionPixelSize(
167                 com.android.internal.R.dimen.status_bar_height);
168     }
169 }
170