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      1 /*
      2  * Copyright (C) 2010 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.test.hwui;
     18 
     19 import android.app.Activity;
     20 import android.content.Context;
     21 import android.graphics.Bitmap;
     22 import android.graphics.BitmapFactory;
     23 import android.graphics.Canvas;
     24 import android.graphics.Paint;
     25 import android.graphics.PorterDuff;
     26 import android.graphics.PorterDuffXfermode;
     27 import android.os.Bundle;
     28 import android.util.Log;
     29 import android.view.Gravity;
     30 import android.view.View;
     31 import android.view.animation.Animation;
     32 import android.view.animation.ScaleAnimation;
     33 import android.widget.FrameLayout;
     34 
     35 @SuppressWarnings({"UnusedDeclaration"})
     36 public class BitmapsActivity extends Activity {
     37     @Override
     38     protected void onCreate(Bundle savedInstanceState) {
     39         super.onCreate(savedInstanceState);
     40         final BitmapsView view = new BitmapsView(this);
     41         final FrameLayout layout = new FrameLayout(this);
     42         layout.addView(view, new FrameLayout.LayoutParams(480, 800, Gravity.CENTER));
     43         setContentView(layout);
     44 
     45         ScaleAnimation a = new ScaleAnimation(1.0f, 2.0f, 1.0f, 2.0f,
     46                 ScaleAnimation.RELATIVE_TO_SELF, 0.5f,
     47                 ScaleAnimation.RELATIVE_TO_SELF,0.5f);
     48         a.setDuration(2000);
     49         a.setRepeatCount(Animation.INFINITE);
     50         a.setRepeatMode(Animation.REVERSE);
     51         view.startAnimation(a);
     52     }
     53 
     54     static class BitmapsView extends View {
     55         private Paint mBitmapPaint;
     56         private final Bitmap mBitmap1;
     57         private final Bitmap mBitmap2;
     58         private final PorterDuffXfermode mDstIn;
     59 
     60         BitmapsView(Context c) {
     61             super(c);
     62 
     63             mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1);
     64             mBitmap2 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset2);
     65 
     66             Log.d("Bitmap", "mBitmap1.isMutable() = " + mBitmap1.isMutable());
     67             Log.d("Bitmap", "mBitmap2.isMutable() = " + mBitmap2.isMutable());
     68 
     69             BitmapFactory.Options opts = new BitmapFactory.Options();
     70             opts.inMutable = true;
     71             Bitmap bitmap = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1, opts);
     72             Log.d("Bitmap", "bitmap.isMutable() = " + bitmap.isMutable());
     73 
     74             mBitmapPaint = new Paint();
     75             mDstIn = new PorterDuffXfermode(PorterDuff.Mode.DST_IN);
     76         }
     77 
     78         @Override
     79         protected void onDraw(Canvas canvas) {
     80             super.onDraw(canvas);
     81 
     82             canvas.translate(120.0f, 50.0f);
     83             canvas.drawBitmap(mBitmap1, 0.0f, 0.0f, mBitmapPaint);
     84 
     85             canvas.translate(0.0f, mBitmap1.getHeight());
     86             canvas.translate(0.0f, 25.0f);
     87             canvas.drawBitmap(mBitmap2, 0.0f, 0.0f, null);
     88 
     89             mBitmapPaint.setAlpha(127);
     90             canvas.translate(0.0f, mBitmap2.getHeight());
     91             canvas.translate(0.0f, 25.0f);
     92             canvas.drawBitmap(mBitmap1, 0.0f, 0.0f, mBitmapPaint);
     93 
     94             mBitmapPaint.setAlpha(255);
     95             canvas.translate(0.0f, mBitmap1.getHeight());
     96             canvas.translate(0.0f, 25.0f);
     97             mBitmapPaint.setColor(0xffff0000);
     98             canvas.drawRect(0.0f, 0.0f, mBitmap2.getWidth(), mBitmap2.getHeight(), mBitmapPaint);
     99             mBitmapPaint.setXfermode(mDstIn);
    100             canvas.drawBitmap(mBitmap2, 0.0f, 0.0f, mBitmapPaint);
    101 
    102             mBitmapPaint.reset();
    103         }
    104     }
    105 }
    106