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.Canvas; 22 import android.graphics.Paint; 23 import android.os.Bundle; 24 import android.util.Log; 25 import android.view.Gravity; 26 import android.view.View; 27 import android.view.animation.AlphaAnimation; 28 import android.view.animation.Animation; 29 import android.widget.FrameLayout; 30 31 @SuppressWarnings({"UnusedDeclaration"}) 32 public class AlphaLayersActivity extends Activity { 33 private static final String LOG_TAG = "HwUi"; 34 35 @Override 36 protected void onCreate(Bundle savedInstanceState) { 37 super.onCreate(savedInstanceState); 38 39 DirtyBitmapView container = new DirtyBitmapView(this); 40 41 ColorView color = new ColorView(this); 42 container.addView(color, new DirtyBitmapView.LayoutParams( 43 dipToPx(this, 100), dipToPx(this, 100), Gravity.CENTER)); 44 45 AlphaAnimation a = new AlphaAnimation(1.0f, 0.0f); 46 a.setDuration(2000); 47 a.setRepeatCount(Animation.INFINITE); 48 a.setRepeatMode(Animation.REVERSE); 49 color.startAnimation(a); 50 51 setContentView(container); 52 } 53 54 @SuppressWarnings({"UnusedDeclaration"}) 55 static int dipToPx(Context c, int dip) { 56 return (int) (c.getResources().getDisplayMetrics().density * dip + 0.5f); 57 } 58 59 static class ColorView extends View { 60 ColorView(Context c) { 61 super(c); 62 } 63 64 @Override 65 protected void onDraw(Canvas canvas) { 66 super.onDraw(canvas); 67 canvas.drawRGB(0, 255, 0); 68 } 69 } 70 71 static class DirtyBitmapView extends FrameLayout { 72 private final Paint mPaint; 73 74 DirtyBitmapView(Context c) { 75 super(c); 76 mPaint = new Paint(); 77 } 78 79 @Override 80 public void dispatchDraw(Canvas canvas) { 81 canvas.drawRGB(255, 255, 255); 82 83 mPaint.setColor(0xffff0000); 84 canvas.drawRect(200.0f, 0.0f, 220.0f, 20.0f, mPaint); 85 86 canvas.save(); 87 canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f); 88 Log.d(LOG_TAG, "clipRect = " + canvas.getClipBounds()); 89 Log.d(LOG_TAG, "rejected = " + canvas.quickReject(100.0f, 100.0f, 110.0f, 110.0f, 90 Canvas.EdgeType.BW)); 91 Log.d(LOG_TAG, "rejected = " + canvas.quickReject(25.0f, 5.0f, 30.0f, 10.0f, 92 Canvas.EdgeType.BW)); 93 canvas.restore(); 94 95 canvas.save(); 96 canvas.scale(2.0f, 2.0f); 97 canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f); 98 Log.d(LOG_TAG, "clipRect = " + canvas.getClipBounds()); 99 Log.d(LOG_TAG, "rejected = " + canvas.quickReject(50.0f, 50.0f, 60.0f, 60.0f, 100 Canvas.EdgeType.BW)); 101 Log.d(LOG_TAG, "rejected = " + canvas.quickReject(25.0f, 5.0f, 30.0f, 10.0f, 102 Canvas.EdgeType.BW)); 103 canvas.restore(); 104 105 canvas.save(); 106 canvas.translate(20.0f, 20.0f); 107 canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f); 108 Log.d(LOG_TAG, "clipRect = " + canvas.getClipBounds()); 109 Log.d(LOG_TAG, "rejected = " + canvas.quickReject(80.0f, 80.0f, 90.0f, 90.0f, 110 Canvas.EdgeType.BW)); 111 Log.d(LOG_TAG, "rejected = " + canvas.quickReject(25.0f, 5.0f, 30.0f, 10.0f, 112 Canvas.EdgeType.BW)); 113 canvas.restore(); 114 115 canvas.save(); 116 canvas.scale(2.0f, 2.0f); 117 canvas.clipRect(20.0f, 0.0f, 40.0f, 20.0f); 118 119 mPaint.setColor(0xff00ff00); 120 canvas.drawRect(0.0f, 0.0f, 20.0f, 20.0f, mPaint); 121 122 mPaint.setColor(0xff0000ff); 123 canvas.drawRect(20.0f, 0.0f, 40.0f, 20.0f, mPaint); 124 125 canvas.restore(); 126 127 final int restoreTo = canvas.save(); 128 canvas.saveLayerAlpha(0.0f, 100.0f, getWidth(), 150.0f, 127, 129 Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.CLIP_TO_LAYER_SAVE_FLAG); 130 mPaint.setColor(0xff0000ff); 131 canvas.drawRect(0.0f, 100.0f, 40.0f, 150.0f, mPaint); 132 mPaint.setColor(0xff00ffff); 133 canvas.drawRect(40.0f, 100.0f, 140.0f, 150.0f, mPaint); 134 mPaint.setColor(0xffff00ff); 135 canvas.drawRect(140.0f, 100.0f, 240.0f, 150.0f, mPaint); 136 canvas.restoreToCount(restoreTo); 137 138 super.dispatchDraw(canvas); 139 } 140 } 141 } 142
