/*

 * Copyright (c) 2018, 2019, 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

 * @key headful

 * @summary test alpha colors are blended with background.

 */

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Robot;

import javax.swing.SwingUtilities;

public class AlphaColorTest extends Component {

    private Color color;

    public AlphaColorTest(Color c) {

       this.color = c;

    }

    public void paint(Graphics g) {

        g.setColor(color);

        g.fillRect(0, 0, getSize().width, getSize().height);

    }

    public Dimension getPreferredSize() {

        return getSize();

    }

    public Dimension getSize() {

        return new Dimension(200, 200);

    }

    public static void main(String args[]) throws Exception {

        SwingUtilities.invokeAndWait(() -> createAndShowGUI());

        Robot robot = new Robot();

        robot.delay(5000);

        robot.waitForIdle();

        Color c = robot.getPixelColor(frame.getX() + 100, frame.getY() + 100);

        int red = c.getRed();

        frame.dispose();

        // Should be 126-128, but be tolerant of gamma correction.

        if (red < 122 || red > 132) {

            throw new RuntimeException("Color is not as expected. Got " + c);

        }

     }

    static Frame frame;

    private static void createAndShowGUI() {

        frame = new Frame("Alpha Color Test") {

            @Override

            public void paint(Graphics g) {

                g.setColor(Color.black);

                g.fillRect(0, 0, getWidth(), getHeight());

                super.paint(g);

            }

        };

        Color color = new Color(255, 255, 255, 127);

        frame.add("Center", new AlphaColorTest(color));

        frame.pack();

        frame.setVisible(true);

    }

}