/*

 * Copyright 2007-2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * @test

 * @bug 5009033 6603000 6666362

 * @summary Verifies that images transformed with bilinear filtering do not

 * leave artifacts at the edges.

 * @run main/othervm DrawImageBilinear

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

 * @author campbelc

 */

import java.awt.Canvas;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.GraphicsConfiguration;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.RenderingHints;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.image.BufferedImage;

import java.awt.image.IndexColorModel;

import java.awt.image.VolatileImage;

public class DrawImageBilinear extends Canvas {

    private static final int SIZE = 5;

    private static boolean done;

    private BufferedImage bimg1, bimg2;

    private VolatileImage vimg;

    private static volatile BufferedImage capture;

    private static void doCapture(Component test) {

        // Grab the screen region

        try {

            Robot robot = new Robot();

            Point pt1 = test.getLocationOnScreen();

            Rectangle rect =

                new Rectangle(pt1.x, pt1.y, test.getWidth(), test.getHeight());

            capture = robot.createScreenCapture(rect);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    private void renderPattern(Graphics g) {

        g.setColor(Color.red);

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

        //g.setColor(Color.green);

        //g.drawRect(0, 0, SIZE-1, SIZE-1);

        g.dispose();

    }

    public void paint(Graphics g) {

        Graphics2D g2d = (Graphics2D)g;

        if (bimg1 == null) {

            bimg1 = (BufferedImage)createImage(SIZE, SIZE);

            bimg1.setAccelerationPriority(0.0f);

            renderPattern(bimg1.createGraphics());

            bimg2 = (BufferedImage)createImage(SIZE, SIZE);

            renderPattern(bimg2.createGraphics());

            vimg = createVolatileImage(SIZE, SIZE);

            vimg.validate(getGraphicsConfiguration());

            renderPattern(vimg.createGraphics());

        }

        do {

            g2d.setColor(Color.white);

            g2d.fillRect(0, 0, getWidth(), getHeight());

            g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,

                                 RenderingHints.VALUE_INTERPOLATION_BILINEAR);

            // first time will be a sw->surface blit

            g2d.drawImage(bimg1, 10, 10, 40, 40, null);

            // second time will be a texture->surface blit

            g2d.drawImage(bimg2, 80, 10, 40, 40, null);

            g2d.drawImage(bimg2, 80, 10, 40, 40, null);

            // third time will be a pbuffer->surface blit

            if (vimg.validate(getGraphicsConfiguration()) != VolatileImage.IMAGE_OK) {

                renderPattern(vimg.createGraphics());

            }

            g2d.drawImage(vimg, 150, 10, 40, 40, null);

            Toolkit.getDefaultToolkit().sync();

        } while (vimg.contentsLost());

        synchronized (this) {

            if (!done) {

                doCapture(this);

                done = true;

            }

            notifyAll();

        }

    }

    public Dimension getPreferredSize() {

        return new Dimension(200, 100);

    }

    private static void testRegion(BufferedImage bi,

                                   Rectangle affectedRegion)

    {

        int x1 = affectedRegion.x;

        int y1 = affectedRegion.y;

        int x2 = x1 + affectedRegion.width;

        int y2 = y1 + affectedRegion.height;

        for (int y = y1; y < y2; y++) {

            for (int x = x1; x < x2; x++) {

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

                if ((actual != 0xfffe0000) && (actual != 0xffff0000)) {

                    throw new RuntimeException("Test failed at x="+x+" y="+y+

                                               " (expected=0xffff0000"+

                                               " actual=0x"+

                                               Integer.toHexString(actual) +

                                               ")");

                }

            }

        }

    }

    public static void main(String[] args) {

        boolean show = false;

        for (String arg : args) {

            if ("-show".equals(arg)) {

                show = true;

            }

        }

        DrawImageBilinear test = new DrawImageBilinear();

        Frame frame = new Frame();

        frame.add(test);

        frame.pack();

        frame.setVisible(true);

        // Wait until the component's been painted

        synchronized (test) {

            while (!done) {

                try {

                    test.wait();

                } catch (InterruptedException e) {

                    throw new RuntimeException("Failed: Interrupted");

                }

            }

        }

        GraphicsConfiguration gc = frame.getGraphicsConfiguration();

        if (gc.getColorModel() instanceof IndexColorModel) {

            System.out.println("IndexColorModel detected: " +

                               "test considered PASSED");

            frame.dispose();

            return;

        }

        if (!show) {

            frame.dispose();

        }

        if (capture == null) {

            throw new RuntimeException("Failed: capture is null");

        }

        // Test background color

        int pixel = capture.getRGB(5, 5);

        if (pixel != 0xffffffff) {

            throw new RuntimeException("Failed: Incorrect color for " +

                                       "background");

        }

        // Test pixels

        testRegion(capture, new Rectangle(10, 10, 40, 40));

        testRegion(capture, new Rectangle(80, 10, 40, 40));

        testRegion(capture, new Rectangle(150, 10, 40, 40));

    }

}