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 onCreate(Bundle savedInstanceState)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 BitmapsView(Context c)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 onDraw(Canvas canvas)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