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.BitmapShader; 24 import android.graphics.Canvas; 25 import android.graphics.Matrix; 26 import android.graphics.Paint; 27 import android.graphics.Rect; 28 import android.graphics.RectF; 29 import android.graphics.Shader; 30 import android.os.Bundle; 31 import android.view.View; 32 33 @SuppressWarnings({"UnusedDeclaration"}) 34 public class Alpha8BitmapActivity extends Activity { 35 @Override 36 protected void onCreate(Bundle savedInstanceState) { 37 super.onCreate(savedInstanceState); 38 setContentView(new BitmapsView(this)); 39 } 40 41 static class BitmapsView extends View { 42 private Paint mBitmapPaint; 43 private final Bitmap mBitmap1; 44 private final float[] mVertices; 45 46 BitmapsView(Context c) { 47 super(c); 48 49 Bitmap texture = BitmapFactory.decodeResource(c.getResources(), R.drawable.spot_mask); 50 mBitmap1 = Bitmap.createBitmap(texture.getWidth(), texture.getHeight(), 51 Bitmap.Config.ALPHA_8); 52 Canvas canvas = new Canvas(mBitmap1); 53 canvas.drawBitmap(texture, 0.0f, 0.0f, null); 54 55 texture = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1); 56 BitmapShader shader = new BitmapShader(texture, 57 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT); 58 59 final float width = texture.getWidth() / 3.0f; 60 final float height = texture.getHeight() / 3.0f; 61 62 mVertices = new float[] { 63 0.0f, 0.0f, width, 0.0f, width * 2, 0.0f, width * 3, 0.0f, 64 0.0f, height, width, height, width * 2, height, width * 4, height, 65 0.0f, height * 2, width, height * 2, width * 2, height * 2, width * 3, height * 2, 66 0.0f, height * 4, width, height * 4, width * 2, height * 4, width * 4, height * 4, 67 }; 68 69 mBitmapPaint = new Paint(); 70 mBitmapPaint.setFilterBitmap(true); 71 mBitmapPaint.setShader(shader); 72 } 73 74 @Override 75 protected void onDraw(Canvas canvas) { 76 super.onDraw(canvas); 77 78 canvas.drawColor(0xffffffff); 79 canvas.drawBitmap(mBitmap1, 0.0f, 0.0f, mBitmapPaint); 80 81 Matrix matrix = new Matrix(); 82 matrix.setScale(2.0f, 2.0f); 83 matrix.postTranslate(0.0f, mBitmap1.getHeight()); 84 canvas.drawBitmap(mBitmap1, matrix, mBitmapPaint); 85 86 Rect src = new Rect(0, 0, mBitmap1.getWidth() / 2, mBitmap1.getHeight() / 2); 87 Rect dst = new Rect(0, mBitmap1.getHeight() * 3, mBitmap1.getWidth(), 88 mBitmap1.getHeight() * 4); 89 canvas.drawBitmap(mBitmap1, src, dst, mBitmapPaint); 90 91 canvas.translate(0.0f, mBitmap1.getHeight() * 4); 92 canvas.drawBitmapMesh(mBitmap1, 3, 3, mVertices, 0, null, 0, mBitmapPaint); 93 94 invalidate(); 95 } 96 } 97 } 98
