/*

 * 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

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 */

/**

 * @test

 * @bug 6603887

 * @summary Verifies that drawImage with bg color works correctly for ICM image

 * @run main/othervm DrawImageBgTest

 * @run main/othervm -Dsun.java2d.pmoffscreen=true DrawImageBgTest

 */

import java.awt.Color;

import java.awt.Graphics;

import java.awt.GraphicsConfiguration;

import java.awt.GraphicsEnvironment;

import java.awt.image.BufferedImage;

import java.awt.image.IndexColorModel;

import java.awt.image.VolatileImage;

import java.awt.image.WritableRaster;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

public class DrawImageBgTest {

    public static void main(String[] args) {

        GraphicsConfiguration gc =

            GraphicsEnvironment.getLocalGraphicsEnvironment().

                getDefaultScreenDevice().getDefaultConfiguration();

        if (gc.getColorModel().getPixelSize() <= 8) {

            System.out.println("8-bit color model, test considered passed");

            return;

        }

        /*

         * Set up images:

         * 1.) VolatileImge for rendering to,

         * 2.) BufferedImage for reading back the contents of the VI

         * 3.) The image triggering the problem

         */

        VolatileImage vImg = null;

        BufferedImage readBackBImg;

        // create a BITMASK ICM such that the transparent color is

        // tr. black (and it's the first in the color map so a buffered image

        // created with this ICM is transparent

        byte r[] = { 0x00, (byte)0xff};

        byte g[] = { 0x00, (byte)0xff};

        byte b[] = { 0x00, (byte)0xff};

        IndexColorModel icm = new IndexColorModel(8, 2, r, g, b, 0);

        WritableRaster wr = icm.createCompatibleWritableRaster(25, 25);

        BufferedImage tImg = new BufferedImage(icm, wr, false, null);

        do {

            if (vImg == null ||

                vImg.validate(gc) == VolatileImage.IMAGE_INCOMPATIBLE)

            {

                vImg = gc.createCompatibleVolatileImage(tImg.getWidth(),

                                                        tImg.getHeight());

            }

            Graphics viG = vImg.getGraphics();

            viG.setColor(Color.red);

            viG.fillRect(0, 0, vImg.getWidth(), vImg.getHeight());

            viG.drawImage(tImg, 0, 0, Color.green, null);

            viG.fillRect(0, 0, vImg.getWidth(), vImg.getHeight());

            viG.drawImage(tImg, 0, 0, Color.white, null);

            readBackBImg = vImg.getSnapshot();

        } while (vImg.contentsLost());

        for (int x = 0; x < readBackBImg.getWidth(); x++) {

            for (int y = 0; y < readBackBImg.getHeight(); y++) {

                int currPixel = readBackBImg.getRGB(x, y);

                if (currPixel != Color.white.getRGB()) {

                    String fileName = "DrawImageBgTest.png";

                    try {

                        ImageIO.write(readBackBImg, "png", new File(fileName));

                        System.err.println("Dumped image to " + fileName);

                    } catch (IOException ex) {}

                    throw new

                        RuntimeException("Test Failed: found wrong color: 0x"+

                                         Integer.toHexString(currPixel));

                }

            }

        }

        System.out.println("Test Passed.");

    }

}