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/*
* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4339415
* @summary Tests that GIF writer plugin is able to write images with BITMASK
* transparency
*/
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
public class TransparencyTest {
protected static final String fname = "ttest.gif";
protected BufferedImage src;
protected BufferedImage dst;
public static void main(String[] args) {
System.out.println("Test indexed image...");
IndexColorModel icm = createIndexedBitmaskColorModel();
BufferedImage img = createIndexedImage(200, 200, icm);
TransparencyTest t = new TransparencyTest(img);
try {
t.doTest();
} catch (Exception e) {
throw new RuntimeException("Test failed!", e);
}
System.out.println("Test passed.");
}
protected TransparencyTest(BufferedImage src) {
this.src = src;
}
protected void doTest() throws IOException {
int w = src.getWidth();
int h = src.getHeight();
System.out.println("Write image...");
try {
ImageWriter writer =
ImageIO.getImageWritersByFormatName("GIF").next();
writer.setOutput(ImageIO.createImageOutputStream(new File(fname)));
writer.write(src);
} catch (Exception e) {
throw new RuntimeException("Test failed.", e);
}
System.out.println("Read image....");
dst = ImageIO.read(new File(fname));
BufferedImage tmp = new BufferedImage(w, 2 * h,
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = tmp.createGraphics();
g.setColor(Color.pink);
g.fillRect(0, 0, tmp.getWidth(), tmp.getHeight());
g.drawImage(src, 0, 0, null);
g.drawImage(dst, 0, h, null);
int width = w / 8;
int x = 5 * width + width / 2;
for (int y = 0; y < h; y++) {
int argb = tmp.getRGB(x, y);
if (Color.pink.getRGB() != argb) {
throw new RuntimeException("Bad color at " + x + "," + y +
" - " + Integer.toHexString(argb));
}
}
}
protected static BufferedImage createIndexedImage(int w, int h,
IndexColorModel icm)
{
BufferedImage img = new BufferedImage(w, h,
BufferedImage.TYPE_BYTE_INDEXED,
icm);
int mapSize = icm.getMapSize();
int width = w / mapSize;
WritableRaster wr = img.getRaster();
for (int i = 0; i < mapSize; i++) {
for (int y = 0; y < h; y++) {
for (int x = 0; x < width; x++) {
wr.setSample(i * width + x, y, 0, i);
}
}
}
return img;
}
protected static IndexColorModel createIndexedBitmaskColorModel() {
int paletteSize = 8;
byte[] red = new byte[paletteSize];
byte[] green = new byte[paletteSize];
byte[] blue = new byte[paletteSize];
red[0] = (byte)0xff; green[0] = (byte)0x00; blue[0] = (byte)0x00;
red[1] = (byte)0x00; green[1] = (byte)0xff; blue[1] = (byte)0x00;
red[2] = (byte)0x00; green[2] = (byte)0x00; blue[2] = (byte)0xff;
red[3] = (byte)0xff; green[3] = (byte)0xff; blue[3] = (byte)0xff;
red[4] = (byte)0x00; green[4] = (byte)0x00; blue[4] = (byte)0x00;
red[5] = (byte)0x80; green[5] = (byte)0x80; blue[5] = (byte)0x80;
red[6] = (byte)0xff; green[6] = (byte)0xff; blue[6] = (byte)0x00;
red[7] = (byte)0x00; green[7] = (byte)0xff; blue[7] = (byte)0xff;
int numBits = 3;
IndexColorModel icm = new IndexColorModel(numBits, paletteSize,
red, green, blue, 5);
return icm;
}
}
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