/*

 * Copyright (c) 2007, 2016, 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

 * @bug 6630702

 * @summary Tests that scrolling after paint() is performed correctly.

 *          This is really only applicable to Vista

 * @author Dmitri.Trembovetski@sun.com: area=Graphics

 * @run main/othervm SwingOnScreenScrollingTest

 * run main/othervm -Dsun.java2d.opengl=True SwingOnScreenScrollingTest

 */

import java.awt.AWTException;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.EventQueue;

import java.awt.Graphics;

import java.awt.GraphicsEnvironment;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.image.BufferedImage;

import java.io.File;

import java.lang.reflect.InvocationTargetException;

import javax.imageio.ImageIO;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

public class SwingOnScreenScrollingTest extends JPanel {

    static JScrollPane pane;

    static SwingOnScreenScrollingTest test;

    public SwingOnScreenScrollingTest() {

    }

    public static void main(String[] args) {

        int size = GraphicsEnvironment.

            getLocalGraphicsEnvironment().

                getDefaultScreenDevice().

                    getDefaultConfiguration().getColorModel().getPixelSize();

        if (size < 16) {

            System.err.println("<16 bit display mode detected. Test PASSED");

            return;

        }

        final JFrame f = new JFrame("SwingOnScreenScrollingTest");

        try {

            EventQueue.invokeAndWait(new Runnable() {

                public void run() {

                    test = new SwingOnScreenScrollingTest();

                    pane = new JScrollPane(test);

                    f.add(pane);

                    f.pack();

                    f.setSize(100, 200);

                    f.setVisible(true);

                }

            });

        } catch (InvocationTargetException ex) {

            ex.printStackTrace();

        } catch (InterruptedException ex) {

            ex.printStackTrace();

        }

        try {

            Thread.sleep(500);

        } catch (InterruptedException ex) {

            ex.printStackTrace();

        }

        EventQueue.invokeLater(new Runnable() {

            public void run() {

                BufferedImage bi;

                bi = new BufferedImage(100, 300,

                                       BufferedImage.TYPE_INT_RGB);

                Graphics gg = bi.getGraphics();

                test.paint(gg);

                for (int y = 80; y < 200; y +=10) {

                    test.scrollRectToVisible(new Rectangle(0, y, 100, 100));

                    try {

                        Thread.sleep(200);

                    } catch (InterruptedException ex) {

                        ex.printStackTrace();

                    }

                }

                Point p = pane.getViewport().getLocationOnScreen();

                Robot r = null;

                try {

                    r = new Robot();

                } catch (AWTException ex) {

                    throw new RuntimeException(ex);

                }

                bi = r.createScreenCapture(new Rectangle(p.x+5, p.y+5, 30, 30));

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

                    for (int x = 0; x < bi.getHeight(); x++) {

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

                        if (bi.getRGB(x, y) != Color.red.getRGB()) {

                            System.err.printf("Test Failed at (%d,%d) c=0x%x\n",

                                              x, y, rgb);

                            try {

                                String name =

                                    "SwingOnScreenScrollingTest_out.png";

                                ImageIO.write(bi, "png", new File(name));

                                System.err.println("Wrote grabbed image to "+

                                                   name);

                            } catch (Throwable ex) {}

                            throw new RuntimeException("Test failed");

                        }

                    }

                }

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

                f.dispose();

            }

        });

    }

    protected void paintComponent(Graphics g) {

        g.setColor(Color.green);

        g.fillRect(0, 0, getWidth(), 100);

        g.setColor(Color.red);

        g.fillRect(0, 100, getWidth(), getHeight()-100);

    }

    public Dimension getPreferredSize() {

        return new Dimension(100, 300);

    }

}