/*

 * Copyright (c) 2013, 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

 *

 * 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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 */

import java.awt.*;

import java.awt.image.*;

import java.util.*;

import javax.swing.*;

/**

 * @test

 * @bug 8024895

 * @summary tests if changing extra alpha values are honored for transformed blits

 * @author ceisserer

 */

public class EABlitTest extends Frame {

    protected void test() {

        BufferedImage srcImg = createSrcImage();

        Image dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(20, 50);

        //be over-cautious and render twice to avoid BI caching issues

        renderToVI(srcImg, dstImg);

        renderToVI(srcImg, dstImg);

        BufferedImage validationImg = new BufferedImage(20, 50, BufferedImage.TYPE_INT_RGB);

        Graphics2D valG = (Graphics2D) validationImg.getGraphics();

        valG.drawImage(dstImg, 0, 0, null);

        //Loop over all pixel, and count the different pixel values encountered.

        TreeSet<Integer> colorCntSet = new TreeSet<>();

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

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

                int rgb = validationImg.getRGB(x, y);

                colorCntSet.add(rgb);

            }

        }

        //Check if we encountered 3 different color values in total

        if (colorCntSet.size() == 3) {

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

        } else {

            throw new RuntimeException("Test FAILED!");

        }

    }

    protected void renderToVI(BufferedImage src, Image dst) {

        Graphics2D g = (Graphics2D) dst.getGraphics();

        g.setColor(Color.WHITE);

        g.fillRect(0, 0, 50, 50);

        g.rotate(0.5f);

        g.setRenderingHint(RenderingHints.KEY_RENDERING,

                           RenderingHints.VALUE_RENDER_QUALITY);

        g.setComposite(AlphaComposite.SrcOver.derive(1f));

        g.drawImage(src, 10, 10, null);

        g.setComposite(AlphaComposite.SrcOver.derive(0.5f));

        g.drawImage(src, 20, 20, null);

    }

    protected BufferedImage createSrcImage() {

        BufferedImage bi = new BufferedImage(10, 10, BufferedImage.TYPE_INT_RGB);

        Graphics2D g = (Graphics2D) bi.getGraphics();

        g.setColor(Color.YELLOW);

        g.fillRect(0, 0, 10, 10);

        return bi;

    }

    public static void main(String[] args) {

         new EABlitTest().test();

    }

}