tests/FlickerTests/test-apps/flickerapp/src/com/android/server/wm/flicker/testapp/SeamlessRotationActivity.java

/*
 * Copyright (C) 2018 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.server.wm.flicker.testapp;

import static android.os.SystemClock.sleep;

import static com.android.server.wm.flicker.testapp.ActivityOptions.SeamlessRotation.EXTRA_STARVE_UI_THREAD;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.view.Window;
import android.view.WindowManager;

import java.util.Timer;
import java.util.TimerTask;

public class SeamlessRotationActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        enableSeamlessRotation();
        setContentView(R.layout.activity_simple);
        boolean starveUiThread = getIntent().getExtras() != null
                && getIntent().getExtras().getBoolean(EXTRA_STARVE_UI_THREAD);
        if (starveUiThread) {
            starveUiThread();
        }
    }

    private void starveUiThread() {
        Handler handler = new Handler(Looper.getMainLooper(), (Message unused) -> {
            sleep(20);
            return true;
        });
        new Timer().schedule(new TimerTask() {
            @Override
            public void run() {
                handler.sendEmptyMessage(0);
            }
        }, 0, 21);
    }

    private void enableSeamlessRotation() {
        WindowManager.LayoutParams p = getWindow().getAttributes();
        p.rotationAnimation = WindowManager.LayoutParams.ROTATION_ANIMATION_SEAMLESS;
        p.layoutInDisplayCutoutMode = WindowManager.LayoutParams
                .LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        getWindow().setAttributes(p);
    }
}