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      1 /*
      2  * Copyright (C) 2015 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 package com.android.test.uibench;
     17 
     18 import android.animation.ObjectAnimator;
     19 import android.animation.ValueAnimator;
     20 import android.content.Context;
     21 import android.graphics.Canvas;
     22 import android.graphics.Color;
     23 import android.os.Bundle;
     24 import android.support.annotation.ColorInt;
     25 import android.support.v7.app.AppCompatActivity;
     26 import android.util.AttributeSet;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 
     30 /**
     31  * Tests invalidation performance by invalidating a large number of easily rendered views,
     32  */
     33 public class InvalidateActivity extends AppCompatActivity {
     34     public static class ColorView extends View {
     35         @ColorInt
     36         public int mColor;
     37 
     38         public ColorView(Context context, AttributeSet attrs) {
     39             super(context, attrs);
     40         }
     41 
     42         public void setColor(@ColorInt int color) {
     43             mColor = color;
     44             invalidate();
     45         }
     46 
     47         @Override
     48         protected void onDraw(Canvas canvas) {
     49             canvas.drawColor(mColor);
     50         }
     51     }
     52 
     53     ColorView[][] mColorViews;
     54 
     55     @SuppressWarnings("unused")
     56     public void setColorValue(int colorValue) {
     57         @ColorInt int a = Color.rgb(colorValue, 255 - colorValue, 255);
     58         @ColorInt int b = Color.rgb(255, colorValue, 255 - colorValue);
     59         for (int y = 0; y < mColorViews.length; y++) {
     60             for (int x = 0; x < mColorViews[y].length; x++) {
     61                 mColorViews[y][x].setColor((x + y) % 2 == 0 ? a : b);
     62             }
     63         }
     64     }
     65 
     66     @Override
     67     protected void onCreate(Bundle savedInstanceState) {
     68         super.onCreate(savedInstanceState);
     69         setContentView(R.layout.activity_invalidate);
     70 
     71         ViewGroup root = (ViewGroup) findViewById(R.id.invalidate_root);
     72         for (int y = 0; y < root.getChildCount(); y++) {
     73             ViewGroup row = (ViewGroup) root.getChildAt(y);
     74             if (mColorViews == null) {
     75                 mColorViews = new ColorView[root.getChildCount()][row.getChildCount()];
     76             }
     77 
     78             for (int x = 0; x < row.getChildCount(); x++) {
     79                 mColorViews[y][x] = (ColorView) row.getChildAt(x);
     80             }
     81         }
     82 
     83         ObjectAnimator animator = ObjectAnimator.ofInt(this, "colorValue", 0, 255);
     84         animator.setRepeatMode(ValueAnimator.REVERSE);
     85         animator.setRepeatCount(ValueAnimator.INFINITE);
     86         animator.start();
     87     }
     88 }
     89