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.server.wm.flicker.testapp;
18 
19 import android.app.Activity;
20 import android.graphics.Canvas;
21 import android.graphics.Color;
22 import android.graphics.PixelFormat;
23 import android.os.Bundle;
24 import android.view.SurfaceHolder;
25 import android.view.SurfaceView;
26 
27 import androidx.core.view.ViewCompat;
28 import androidx.core.view.WindowInsetsCompat;
29 import androidx.core.view.WindowInsetsControllerCompat;
30 
31 public class GameActivity extends Activity implements SurfaceHolder.Callback {
32     private SurfaceHolder mSurfaceHolder;
33     private SurfaceView mSurfaceView;
34 
35     @Override
onCreate(Bundle savedInstanceState)36     public void onCreate(Bundle savedInstanceState) {
37         super.onCreate(savedInstanceState);
38 
39         setContentView(R.layout.activity_surfaceview);
40 
41         mSurfaceView = (SurfaceView) findViewById(R.id.surface_view);
42         mSurfaceView.setZOrderOnTop(true);
43         mSurfaceHolder = mSurfaceView.getHolder();
44         mSurfaceHolder.setFormat(PixelFormat.TRANSPARENT);
45         mSurfaceHolder.addCallback(this);
46     }
47 
48     @Override
surfaceCreated(SurfaceHolder holder)49     public void surfaceCreated(SurfaceHolder holder) {
50         hideSystemBars();
51     }
52 
53     @Override
surfaceChanged(SurfaceHolder holder, int format, int width, int height)54     public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
55         Canvas canvas = holder.lockCanvas();
56         canvas.drawColor(Color.BLUE);
57         holder.unlockCanvasAndPost(canvas);
58     }
59 
60     @Override
surfaceDestroyed(SurfaceHolder holder)61     public void surfaceDestroyed(SurfaceHolder holder) {
62     }
63 
hideSystemBars()64     private void hideSystemBars() {
65         WindowInsetsControllerCompat windowInsetsController =
66                 ViewCompat.getWindowInsetsController(getWindow().getDecorView());
67         if (windowInsetsController == null) {
68             return;
69         }
70         // Configure the behavior of the hidden system bars.
71         windowInsetsController.setSystemBarsBehavior(
72                 WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
73         );
74         // Hide both the status bar and the navigation bar.
75         windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());
76     }
77 }
78