1/*
2 * Copyright (C) 2017 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 */
16package com.android.test.uibench;
17
18import android.animation.PropertyValuesHolder;
19import android.animation.ValueAnimator;
20import android.graphics.Color;
21import android.os.Bundle;
22import android.support.v7.app.AppCompatActivity;
23import android.util.DisplayMetrics;
24import android.view.View;
25import android.view.ViewGroup.LayoutParams;
26import android.widget.FrameLayout;
27
28/**
29 * Tests resizing of a View backed by a hardware layer.
30 */
31public class ResizeHWLayerActivity extends AppCompatActivity {
32
33    @Override
34    protected void onCreate(Bundle savedInstanceState) {
35        super.onCreate(savedInstanceState);
36        DisplayMetrics metrics = getResources().getDisplayMetrics();
37        int width = metrics.widthPixels;
38        int height = metrics.heightPixels;
39        View child = new View(this);
40        child.setBackgroundColor(Color.BLUE);
41        child.setLayoutParams(new FrameLayout.LayoutParams(width, height));
42        child.setLayerType(View.LAYER_TYPE_HARDWARE, null);
43        PropertyValuesHolder pvhWidth = PropertyValuesHolder.ofInt("width", width, 1);
44        PropertyValuesHolder pvhHeight = PropertyValuesHolder.ofInt("height", height, 1);
45        final LayoutParams params = child.getLayoutParams();
46        ValueAnimator animator = ValueAnimator.ofPropertyValuesHolder(pvhWidth, pvhHeight);
47        animator.setRepeatMode(ValueAnimator.REVERSE);
48        animator.setRepeatCount(ValueAnimator.INFINITE);
49        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
50            @Override
51            public void onAnimationUpdate(ValueAnimator valueAnimator) {
52                params.width = (Integer)valueAnimator.getAnimatedValue("width");
53                params.height = (Integer)valueAnimator.getAnimatedValue("height");
54                child.requestLayout();
55            }
56        });
57        animator.start();
58        setContentView(child);
59    }
60}
61