| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package android.graphics.cts; |
| |
| |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Paint; |
| import android.graphics.PorterDuff; |
| import android.graphics.PorterDuffXfermode; |
| import android.graphics.Bitmap.Config; |
| |
| import junit.framework.TestCase; |
| |
| public class PorterDuffXfermodeTest extends TestCase { |
| |
| private static final int WIDTH = 100; |
| private static final int HEIGHT = 100; |
| |
| public void testPorterDuffXfermode() { |
| Bitmap target = Bitmap.createBitmap(WIDTH, HEIGHT, Config.ARGB_8888); |
| target.eraseColor(Color.TRANSPARENT); |
| Bitmap b1 = Bitmap.createBitmap(WIDTH / 2, HEIGHT, Config.ARGB_8888); |
| b1.eraseColor(Color.RED); |
| Bitmap b2 = Bitmap.createBitmap(WIDTH, HEIGHT / 2, Config.ARGB_8888); |
| b2.eraseColor(Color.BLUE); |
| |
| Canvas canvas = new Canvas(target); |
| Paint p = new Paint(); |
| canvas.drawBitmap(b1, 0, 0, p); |
| p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC)); |
| canvas.drawBitmap(b2, 0, HEIGHT / 2, p); |
| assertEquals(Color.RED, target.getPixel(WIDTH / 4, HEIGHT / 4)); |
| assertEquals(Color.BLUE, target.getPixel(WIDTH / 4, HEIGHT * 3 / 4)); |
| assertEquals(Color.BLUE, target.getPixel(WIDTH * 3 / 4, HEIGHT * 3 / 4)); |
| |
| target.eraseColor(Color.TRANSPARENT); |
| p.setXfermode(null); |
| canvas.drawBitmap(b1, 0, 0, p); |
| p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST)); |
| canvas.drawBitmap(b2, 0, HEIGHT / 2, p); |
| assertEquals(Color.RED, target.getPixel(WIDTH / 4, HEIGHT / 4)); |
| assertEquals(Color.RED, target.getPixel(WIDTH / 4, HEIGHT * 3 / 4)); |
| assertEquals(Color.TRANSPARENT, target.getPixel(WIDTH * 3 / 4, HEIGHT * 3 / 4)); |
| |
| target.eraseColor(Color.TRANSPARENT); |
| p.setXfermode(null); |
| canvas.drawBitmap(b1, 0, 0, p); |
| p.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SCREEN)); |
| canvas.drawBitmap(b2, 0, HEIGHT / 2, p); |
| assertEquals(Color.RED, target.getPixel(WIDTH / 4, HEIGHT / 4)); |
| assertEquals(Color.MAGENTA, target.getPixel(WIDTH / 4, HEIGHT * 3 / 4)); |
| assertEquals(Color.BLUE, target.getPixel(WIDTH * 3 / 4, HEIGHT * 3 / 4)); |
| } |
| } |