/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

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 * 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 4832224 6322584 6328478 6328481 6322580 6588884 6587863

 * @summary Verifies that the pixelization of simple primitives (drawLine,

 * fillRect, drawRect, fill, draw) with the OGL pipeline enabled

 * matches that produced by our software loops.  (The primitives tested here

 * are simple enough that the OGL results should match the software results

 * exactly.)  There is some overlap with PolyVertTest as we test both

 * solid and XOR rendering here, but this testcase is a bit simpler and

 * more appropriate for quick OGL testing.  This test is also useful for

 * comparing quality between our X11/GDI and software pipelines.

 * @run main/othervm SimplePrimQuality

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

 * @author campbelc

 */

import java.awt.*;

import java.awt.geom.*;

import java.awt.image.*;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

public class SimplePrimQuality extends Canvas {

    private static final int SIZE = 300;

    private static boolean done;

    private static boolean testVI;

    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 static final int[][] rpts = {

        {2, 0, 0, 0},

        {12, 0, 1, 0},

        {22, 0, 0, 1},

        {32, 0, 1, 1},

        {42, 0, 2, 1},

        {52, 0, 1, 2},

        {62, 0, 2, 2},

        {72, 0, 5, 5},

        {82, 0, 10, 10},

        {97, 0, 15, 15},

    };

    private void drawLine(Graphics2D g, int x, int y, int dx, int dy) {

        g.drawLine(x, y, x + dx, y + dy);

    }

    private void drawLines(Graphics2D g, int s) {

        drawLine(g, 2, 0, 0, 0);

        drawLine(g, 12, 0, 0, s);

        drawLine(g, 22, 0, s, 0);

        drawLine(g, 32, 0, s, s);

        drawLine(g, 42, 0, 0, -s);

        drawLine(g, 52, 0, -s, 0);

        drawLine(g, 62, 0, -s, -s);

        drawLine(g, 72, 0, -s, s);

        drawLine(g, 82, 0, s, -s);

    }

    private void fillRects(Graphics2D g) {

        for (int i = 0; i < rpts.length; i++) {

            g.fillRect(rpts[i][0], rpts[i][1], rpts[i][2], rpts[i][3]);

        }

    }

    private void drawRects(Graphics2D g) {

        for (int i = 0; i < rpts.length; i++) {

            g.drawRect(rpts[i][0], rpts[i][1], rpts[i][2], rpts[i][3]);

        }

    }

    private void fillOvals(Graphics2D g) {

        for (int i = 0; i < rpts.length; i++) {

            // use fill() instead of fillOval(), since the former is more

            // likely to be consistent with our software loops when the

            // OGL pipeline cannot be enabled

            g.fill(new Ellipse2D.Float(rpts[i][0], rpts[i][1],

                                       rpts[i][2], rpts[i][3]));

        }

    }

    private void drawOvals(Graphics2D g) {

        for (int i = 0; i < rpts.length; i++) {

            // use draw() instead of drawOval(), since the former is more

            // likely to be consistent with our software loops when the

            // OGL pipeline cannot be enabled

            g.draw(new Ellipse2D.Float(rpts[i][0], rpts[i][1],

                                       rpts[i][2], rpts[i][3]));

        }

    }

    private void renderShapes(Graphics2D g) {

        // drawLine tests...

        g.translate(0, 5);

        drawLines(g, 1);

        g.translate(0, 10);

        drawLines(g, 4);

        // fillRect tests...

        g.translate(0, 10);

        fillRects(g);

        // drawRect tests...

        g.translate(0, 20);

        drawRects(g);

        // fillOval tests...

        g.translate(0, 20);

        fillOvals(g);

        // drawOval tests...

        g.translate(0, 20);

        drawOvals(g);

    }

    private void renderTest(Graphics2D g, int w, int h) {

        // on the left side, render the shapes in solid mode

        g.setColor(Color.black);

        g.fillRect(0, 0, w, h);

        g.setColor(Color.green);

        renderShapes(g);

        // on the right side, render the shapes in XOR mode

        g.setTransform(AffineTransform.getTranslateInstance(SIZE/2, 0));

        g.setXORMode(Color.black);

        renderShapes(g);

        g.setTransform(AffineTransform.getTranslateInstance(SIZE/2, 0));

        renderShapes(g);

    }

    public void paint(Graphics g) {

        Graphics2D g2d = (Graphics2D)g;

        renderTest(g2d, SIZE, SIZE);

        Toolkit.getDefaultToolkit().sync();

        synchronized (this) {

            if (!done) {

                doCapture(this);

                done = true;

            }

            notifyAll();

        }

    }

    public Dimension getPreferredSize() {

        return new Dimension(SIZE, SIZE);

    }

    public static void main(String[] args) {

        boolean show = false;

        for (String arg : args) {

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

                System.out.println("Testing VolatileImage, not screen");

                testVI = true;

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

                show = true;

            }

        }

        SimplePrimQuality test = new SimplePrimQuality();

        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");

                }

            }

        }

        // REMIND: We will allow this test to pass silently on Windows

        // (when OGL is not enabled) until we fix the GDI pipeline so that

        // its stroked/filled GeneralPaths match our software loops (see

        // 6322554).  This check should be removed when 6322554 is fixed.

        GraphicsConfiguration gc = frame.getGraphicsConfiguration();

        if (gc.getClass().getSimpleName().startsWith("Win")) {

            System.out.println("GDI pipeline detected: " +

                               "test considered PASSED");

            frame.dispose();

            return;

        }

        if (testVI) {

            // render to a VI instead of the screen

            VolatileImage vi = frame.createVolatileImage(SIZE, SIZE);

            do {

                vi.validate(frame.getGraphicsConfiguration());

                Graphics2D g1 = vi.createGraphics();

                test.renderTest(g1, SIZE, SIZE);

                g1.dispose();

                capture = vi.getSnapshot();

            } while (vi.contentsLost());

            frame.dispose();

        }

        if (!show) {

            frame.dispose();

        }

        if (capture == null) {

            throw new RuntimeException("Error capturing the rendering");

        }

        // Create reference image

        int w = SIZE, h = SIZE;

        BufferedImage refimg = new BufferedImage(w, h,

                                                 BufferedImage.TYPE_INT_RGB);

        Graphics2D g = refimg.createGraphics();

        test.renderTest(g, w, h);

        g.dispose();

        // Test pixels

        for (int y = 0; y < h; y++) {

            for (int x = 0; x < w; x++) {

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

                int expected = refimg.getRGB(x, y);

                if (actual != expected) {

                    String expectedName = "SimplePrimQuality_expected.png";

                    String actualName = "SimplePrimQuality_actual.png";

                    try {

                        System.out.println("Writing expected image to: "+

                                           expectedName);

                        ImageIO.write(refimg, "png", new File(expectedName));

                        System.out.println("Writing actual image   to: "+

                                           actualName);

                        ImageIO.write(capture, "png", new File(actualName));

                    } catch (IOException ex) {}

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

                                               " (expected="+

                                               Integer.toHexString(expected) +

                                               " actual="+

                                               Integer.toHexString(actual) +

                                               ")");

                }

            }

        }

    }

}