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.graphics.PorterDuff; 24 import android.graphics.PorterDuffXfermode; 25 import android.os.Bundle; 26 import android.view.View; 27 28 import static android.graphics.PorterDuff.Mode; 29 30 @SuppressWarnings({"UnusedDeclaration"}) 31 public class XfermodeActivity extends Activity { 32 @Override onCreate(Bundle savedInstanceState)33 protected void onCreate(Bundle savedInstanceState) { 34 super.onCreate(savedInstanceState); 35 36 setContentView(new XfermodesView(this)); 37 } 38 39 static class XfermodesView extends View { 40 private final Paint mBluePaint; 41 private final Paint mRedPaint; 42 XfermodesView(Context c)43 XfermodesView(Context c) { 44 super(c); 45 46 mBluePaint = new Paint(); 47 mBluePaint.setColor(0xff0000ff); 48 49 mRedPaint = new Paint(); 50 mRedPaint.setColor(0x7fff0000); 51 } 52 53 @Override onDraw(Canvas canvas)54 protected void onDraw(Canvas canvas) { 55 super.onDraw(canvas); 56 //canvas.drawRGB(255, 255, 255); 57 58 canvas.translate(100.0f, 100.0f); 59 60 // SRC modes 61 canvas.save(); 62 63 drawRects(canvas, Mode.SRC_OVER); 64 canvas.translate(0.0f, 100.0f); 65 66 drawRects(canvas, Mode.SRC_IN); 67 canvas.translate(0.0f, 100.0f); 68 69 drawRects(canvas, Mode.SRC_OUT); 70 canvas.translate(0.0f, 100.0f); 71 72 drawRects(canvas, Mode.SRC_ATOP); 73 canvas.translate(0.0f, 100.0f); 74 75 drawRects(canvas, Mode.SRC); 76 77 canvas.restore(); 78 79 canvas.translate(100.0f, 0.0f); 80 81 // DST modes 82 canvas.save(); 83 84 drawRects(canvas, Mode.DST_OVER); 85 canvas.translate(0.0f, 100.0f); 86 87 drawRects(canvas, Mode.DST_IN); 88 canvas.translate(0.0f, 100.0f); 89 90 drawRects(canvas, Mode.DST_OUT); 91 canvas.translate(0.0f, 100.0f); 92 93 drawRects(canvas, Mode.DST_ATOP); 94 canvas.translate(0.0f, 100.0f); 95 96 drawRects(canvas, Mode.DST); 97 98 canvas.restore(); 99 100 canvas.translate(100.0f, 0.0f); 101 102 // Other modes 103 canvas.save(); 104 105 drawRects(canvas, Mode.CLEAR); 106 canvas.translate(0.0f, 100.0f); 107 108 drawRects(canvas, Mode.XOR); 109 110 canvas.translate(0.0f, 100.0f); 111 112 mBluePaint.setAlpha(127); 113 canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint); 114 115 canvas.translate(0.0f, 100.0f); 116 117 mBluePaint.setAlpha(10); 118 mBluePaint.setColor(0x7f0000ff); 119 canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint); 120 121 mBluePaint.setColor(0xff0000ff); 122 mBluePaint.setAlpha(255); 123 124 canvas.restore(); 125 } 126 drawRects(Canvas canvas, PorterDuff.Mode mode)127 private void drawRects(Canvas canvas, PorterDuff.Mode mode) { 128 canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mBluePaint); 129 130 canvas.save(); 131 canvas.translate(25.0f, 25.0f); 132 mRedPaint.setXfermode(new PorterDuffXfermode(mode)); 133 canvas.drawRect(0.0f, 0.0f, 50.0f, 50.0f, mRedPaint); 134 canvas.restore(); 135 } 136 } 137 } 138