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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.ColorFilter;
     23 import android.graphics.PixelFormat;
     24 import android.graphics.Color;
     25 import android.graphics.Paint;
     26 import android.graphics.drawable.Drawable;
     27 import android.os.Bundle;
     28 import android.support.v7.app.AppCompatActivity;
     29 import android.view.View;
     30 
     31 /**
     32  * Draws hundreds of levels of overdraw over the content area.
     33  *
     34  * This should all be optimized out by the renderer.
     35  */
     36 public class FullscreenOverdrawActivity extends AppCompatActivity {
     37     private class OverdrawDrawable extends Drawable {
     38         Paint paint = new Paint();
     39         int mColorValue = 0;
     40 
     41         @SuppressWarnings("unused")
     42         public void setColorValue(int colorValue) {
     43             mColorValue = colorValue;
     44             invalidateSelf();
     45         }
     46 
     47         @Override
     48         public void draw(Canvas canvas) {
     49             paint.setColor(Color.rgb(mColorValue, 255 - mColorValue, 255));
     50 
     51             for (int i = 0; i < 400; i++) {
     52                 canvas.drawRect(getBounds(), paint);
     53             }
     54         }
     55 
     56         @Override
     57         public void setAlpha(int alpha) {
     58         }
     59 
     60         @Override
     61         public void setColorFilter(ColorFilter colorFilter) {
     62         }
     63 
     64         @Override
     65         public int getOpacity() {
     66             return PixelFormat.OPAQUE;
     67         }
     68     }
     69     @Override
     70     protected void onCreate(Bundle savedInstanceState) {
     71         super.onCreate(savedInstanceState);
     72 
     73         OverdrawDrawable overdraw = new OverdrawDrawable();
     74         getWindow().setBackgroundDrawable(overdraw);
     75 
     76         setContentView(new View(this));
     77 
     78         ObjectAnimator objectAnimator = ObjectAnimator.ofInt(overdraw, "colorValue", 0, 255);
     79         objectAnimator.setRepeatMode(ValueAnimator.REVERSE);
     80         objectAnimator.setRepeatCount(ValueAnimator.INFINITE);
     81         objectAnimator.start();
     82     }
     83 }
     84