1 /*
2  * Copyright (C) 2021 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.internal.policy;
18 
19 import android.content.Context;
20 import android.content.res.Resources;
21 import android.graphics.Insets;
22 import android.view.Display;
23 import android.view.DisplayCutout;
24 import android.view.DisplayInfo;
25 import android.view.Surface;
26 
27 import com.android.internal.R;
28 
29 /**
30  * Utility functions for system bars used by both window manager and System UI.
31  *
32  * @hide
33  */
34 public final class SystemBarUtils {
35 
36     /**
37      * Gets the status bar height.
38      */
getStatusBarHeight(Context context)39     public static int getStatusBarHeight(Context context) {
40         return getStatusBarHeight(context.getResources(), context.getDisplay().getCutout());
41     }
42 
43     /**
44      * Gets the status bar height with a specific display cutout.
45      */
getStatusBarHeight(Resources res, DisplayCutout cutout)46     public static int getStatusBarHeight(Resources res, DisplayCutout cutout) {
47         final int defaultSize = res.getDimensionPixelSize(R.dimen.status_bar_height_default);
48         final int safeInsetTop = cutout == null ? 0 : cutout.getSafeInsetTop();
49         final int waterfallInsetTop = cutout == null ? 0 : cutout.getWaterfallInsets().top;
50         // The status bar height should be:
51         // Max(top cutout size, (status bar default height + waterfall top size))
52         return Math.max(safeInsetTop, defaultSize + waterfallInsetTop);
53     }
54 
55     /**
56      * Gets the status bar height for a specific rotation.
57      */
getStatusBarHeightForRotation( Context context, @Surface.Rotation int targetRot)58     public static int getStatusBarHeightForRotation(
59             Context context, @Surface.Rotation int targetRot) {
60         final Display display = context.getDisplay();
61         final int rotation = display.getRotation();
62         final DisplayCutout cutout = display.getCutout();
63         DisplayInfo info = new DisplayInfo();
64         display.getDisplayInfo(info);
65         Insets insets;
66         Insets waterfallInsets;
67         if (cutout == null) {
68             insets = Insets.NONE;
69             waterfallInsets = Insets.NONE;
70         } else {
71             DisplayCutout rotated =
72                     cutout.getRotated(info.logicalWidth, info.logicalHeight, rotation, targetRot);
73             insets = Insets.of(rotated.getSafeInsets());
74             waterfallInsets = rotated.getWaterfallInsets();
75         }
76         final int defaultSize =
77                 context.getResources().getDimensionPixelSize(R.dimen.status_bar_height_default);
78         // The status bar height should be:
79         // Max(top cutout size, (status bar default height + waterfall top size))
80         return Math.max(insets.top, defaultSize + waterfallInsets.top);
81     }
82 
83     /**
84      * Gets the height of area above QQS where battery/time go in notification panel. The height
85      * equals to status bar height if status bar height is bigger than the
86      * {@link R.dimen#quick_qs_offset_height}.
87      */
getQuickQsOffsetHeight(Context context)88     public static int getQuickQsOffsetHeight(Context context) {
89         final int defaultSize = context.getResources().getDimensionPixelSize(
90                 R.dimen.quick_qs_offset_height);
91         final int statusBarHeight = getStatusBarHeight(context);
92         // Equals to status bar height if status bar height is bigger.
93         return Math.max(defaultSize, statusBarHeight);
94     }
95 }
96