/*

 * 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

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 * questions.

 */

/*

 * @test

 * @bug 4678208 4771101 6328481 6588884

 * @summary verify the pixelization of degenerate polylines and polygons

 * @run main PolyVertTest

 * @run main/othervm -Dsun.java2d.d3d=True PolyVertTest -hwonly

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

 */

import java.awt.*;

import java.awt.event.*;

import java.awt.geom.*;

import java.awt.image.*;

public class PolyVertTest {

    static int TESTWIDTH;

    static int TESTHEIGHT;

    static final int REG_TEST_WIDTH = 10;

    static final int REG_TEST_HEIGHT = 10;

    static final int FULL_TEST_WIDTH = 50;

    static final int FULL_TEST_HEIGHT = 200;

    static final int FRINGE = 2;

    static final int GREEN = Color.green.getRGB();

    static final int RED   = Color.red.getRGB();

    static BufferedImage refImg;

    static BufferedImage errorImg;

    static Graphics errorG;

    static Component testCanvas;

    static int totalbadpixels;

    static int totalfuzzypixels;

    static int numbadtests;

    static int numfuzzytests;

    static int numframes;

    static int fuzzystarty;

    static boolean counting;

    static boolean showerrors;

    static boolean showresults;

    static boolean fringe;

    static boolean forceerror;

    static boolean fulltest = true;

    static boolean hwonly;

    static WindowListener windowCloser = new WindowAdapter() {

        public void windowClosing(WindowEvent e) {

            e.getWindow().hide();

            if (--numframes <= 0) {

                System.exit(0);

            }

        }

    };

    public PolyVertTest() {

        /*

        setBackground(Color.white);

        setForeground(Color.black);

        */

    }

    static int polypts[][][] = {

        {

            // void polygon (no points)

            {}, {},

        },

        {

            // one point

            { 0 }, { 0 },

        },

        {

            // two points

            { 0, 5 }, { 0, 0 },

            { 0, 0, 6, 1,

              10, 0, 6, 1,

              20, 0, 6, 1 },

            { 0, 0, 6, 1,

              10, 0, 1, 1, 15, 0, 1, 1,

              20, 0, 1, 1, 25, 0, 1, 1 },

            { 10, 0, 1, 1,

              20, 0, 1, 1 },

        },

        {

            // open triangle

            { 0, 5, 5 }, { 0, 0, 5 },

            { 0, 0, 6, 1, 5, 1, 1, 5,

              10, 0, 6, 1, 15, 1, 1, 5, 11, 1, 1, 1,

              12, 2, 1, 1, 13, 3, 1, 1, 14, 4, 1, 1,

              20, 0, 6, 1, 25, 1, 1, 5, 21, 1, 1, 1,

              22, 2, 1, 1, 23, 3, 1, 1, 24, 4, 1, 1 },

            { 0, 0, 6, 1, 5, 1, 1, 5,

              10, 0, 6, 1, 15, 1, 1, 5, 11, 1, 1, 1,

              12, 2, 1, 1, 13, 3, 1, 1, 14, 4, 1, 1,

              20, 0, 6, 1, 25, 1, 1, 5, 21, 1, 1, 1,

              22, 2, 1, 1, 23, 3, 1, 1, 24, 4, 1, 1 },

            { 10, 0, 1, 1,

              20, 0, 1, 1 },

        },

        {

            // closed triangle

            { 0, 5, 5, 0 }, { 0, 0, 5, 0 },

            { 0, 0, 6, 1, 5, 1, 1, 5, 1, 1, 1, 1,

              2, 2, 1, 1, 3, 3, 1, 1, 4, 4, 1, 1,

              10, 0, 6, 1, 15, 1, 1, 5, 11, 1, 1, 1,

              12, 2, 1, 1, 13, 3, 1, 1, 14, 4, 1, 1,

              20, 0, 6, 1, 25, 1, 1, 5, 21, 1, 1, 1,

              22, 2, 1, 1, 23, 3, 1, 1, 24, 4, 1, 1 },

            { 1, 0, 5, 1, 5, 1, 1, 5, 1, 1, 1, 1,

              2, 2, 1, 1, 3, 3, 1, 1, 4, 4, 1, 1,

              10, 0, 6, 1, 15, 1, 1, 5, 11, 1, 1, 1,

              12, 2, 1, 1, 13, 3, 1, 1, 14, 4, 1, 1,

              20, 0, 6, 1, 25, 1, 1, 5, 21, 1, 1, 1,

              22, 2, 1, 1, 23, 3, 1, 1, 24, 4, 1, 1 },

            { 0, 0, 1, 1,

              10, 0, 1, 1,

              20, 0, 1, 1 },

        },

        {

            // empty line

            { 0, 0 }, { 0, 0 },

            { 0, 0, 1, 1,

              10, 0, 1, 1,

              20, 0, 1, 1 },

        },

        {

            // empty triangle

            { 0, 0, 0 }, { 0, 0, 0 },

            { 0, 0, 1, 1,

              10, 0, 1, 1,

              20, 0, 1, 1 },

        },

    };

    public static void render(Graphics2D g2d) {

        g2d.setColor(Color.white);

        g2d.fillRect(0, 0, TESTWIDTH, TESTHEIGHT);

        g2d.setColor(Color.black);

        if (forceerror) {

            g2d.fillRect(2, 2, 2, 2);

            g2d.fillRect(15, 5, 1, 1);

        }

        if (!fulltest) {

            g2d.draw(new Rectangle2D.Double(5, 5, 0, 0));

            return;

        }

        g2d.drawLine(10, 10, 10, 10);

        g2d.draw(new Line2D.Double(20, 10, 20, 10));

        g2d.drawRect(10, 20, 0, 0);

        g2d.draw(new Rectangle2D.Double(20, 20, 0, 0));

        g2d.setXORMode(Color.white);

        g2d.drawLine(10, 30, 10, 30);

        g2d.draw(new Line2D.Double(20, 30, 20, 30));

        g2d.drawRect(10, 40, 0, 0);

        g2d.draw(new Rectangle2D.Double(20, 40, 0, 0));

        g2d.setPaintMode();

        int y = 50;

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

            int data[][] = polypts[i];

            int xpoints[] = data[0];

            int ypoints[] = data[1];

            int npoints = xpoints.length;

            g2d.translate(10, y);

            g2d.drawPolyline(xpoints, ypoints, npoints);

            g2d.translate(10, 0);

            g2d.drawPolygon(xpoints, ypoints, npoints);

            g2d.translate(10, 0);

            g2d.draw(new Polygon(xpoints, ypoints, npoints));

            g2d.translate(-30, -y);

            y += 10;

        }

        g2d.setXORMode(Color.white);

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

            int data[][] = polypts[i];

            int xpoints[] = data[0];

            int ypoints[] = data[1];

            int npoints = xpoints.length;

            g2d.translate(10, y);

            g2d.drawPolyline(xpoints, ypoints, npoints);

            g2d.translate(10, 0);

            g2d.drawPolygon(xpoints, ypoints, npoints);

            g2d.translate(10, 0);

            g2d.draw(new Polygon(xpoints, ypoints, npoints));

            g2d.translate(-30, -y);

            y += 10;

        }

        g2d.setPaintMode();

    }

    public Dimension getPreferredSize() {

        return new Dimension(500, 500);

    }

    public static void usage(int exitcode) {

        System.err.println("usage: java PolyVertTest [<option>]*");

        System.err.println("    -usage         "+

                           "print this usage summary");

        System.err.println("    -count         "+

                           "run all tests and accumulate error counts");

        System.err.println("    -forceerror    "+

                           "force at least one error in each test");

        System.err.println("    -fringe        "+

                           "draw a yellow fringe around problems");

        System.err.println("    -showerrors    "+

                           "display results window for tests with problems");

        System.err.println("    -showresults   "+

                           "display results window for all tests");

        System.err.println("    -quicktest     "+

                           "only run test cases reported in bug reports");

        System.err.println("    -fulltest      "+

                           "run full suite of test cases for a 'unit test'");

        System.err.println("    -hwonly        "+

                           "only run tests for screen and VolatileImage");

        System.exit(exitcode);

    }

    public static void main(String argv[]) {

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

            String arg = argv[i];

            if (arg.equalsIgnoreCase("-count")) {

                counting = true;

            } else if (arg.equalsIgnoreCase("-forceerror")) {

                forceerror = true;

            } else if (arg.equalsIgnoreCase("-fringe")) {

                fringe = true;

            } else if (arg.equalsIgnoreCase("-showerrors")) {

                showerrors = true;

            } else if (arg.equalsIgnoreCase("-showresults")) {

                showresults = true;

            } else if (arg.equalsIgnoreCase("-quicktest")) {

                fulltest = false;

            } else if (arg.equalsIgnoreCase("-fulltest")) {

                fulltest = true;

            } else if (arg.equalsIgnoreCase("-hwonly")) {

                hwonly = true;

            } else if (arg.equalsIgnoreCase("-usage")) {

                usage(0);

            } else {

                System.err.println("unknown option: "+arg);

                usage(1);

            }

        }

        if (fulltest) {

            TESTWIDTH  = FULL_TEST_WIDTH;

            TESTHEIGHT = FULL_TEST_HEIGHT;

        } else {

            TESTWIDTH  = REG_TEST_WIDTH;

            TESTHEIGHT = REG_TEST_HEIGHT;

        }

        // Prevents premature exit by the WindowAdapter if the user

        // closes the last visible results window before we've

        // finished our tests.

        numframes++;

        makeReferenceImage();

        testScreen();

        testVolatileImage();

        if (!hwonly) {

            testBufferedImage();

            testOffscreen();

            testCompatibleImages();

        }

        if (totalfuzzypixels > 0) {

            System.err.println(totalfuzzypixels+" fuzzy pixels found in "+

                               numfuzzytests+" tests");

        }

        if (totalbadpixels > 0) {

            throw new RuntimeException(totalbadpixels+" bad pixels found in "+

                                       numbadtests+" tests");

        }

        System.out.println("Test done - no bad pixels found");

        --numframes;

        if (counting || ((showresults || showerrors) && numframes == 0)) {

            System.exit(0);

        }

    }

    public static void makeReferenceImage() {

        refImg = new BufferedImage(TESTWIDTH, TESTHEIGHT,

                                   BufferedImage.TYPE_INT_RGB);

        Graphics g = refImg.getGraphics();

        g.setColor(Color.white);

        g.fillRect(0, 0, TESTWIDTH, TESTHEIGHT);

        g.setColor(Color.black);

        if (!fulltest) {

            g.fillRect(5, 5, 1, 1);

            g.dispose();

            return;

        }

        for (int y = 10; y < 50; y += 10) {

            g.fillRect(10, y, 1, 1);

            g.fillRect(20, y, 1, 1);

        }

        int y = 50;

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

            int data[][] = polypts[i];

            g.translate(10, y);

            if (data.length > 2) {

                int rectvals[] = data[2];

                for (int j = 0; j < rectvals.length; j += 4) {

                    g.fillRect(rectvals[j+0], rectvals[j+1],

                               rectvals[j+2], rectvals[j+3]);

                }

            }

            g.translate(-10, -y);

            y += 10;

        }

        fuzzystarty = y;

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

            int data[][] = polypts[i];

            g.translate(10, y);

            if (data.length > 2) {

                int rectvals[] = data.length > 3 ? data[3] : data[2];

                for (int j = 0; j < rectvals.length; j += 4) {

                    g.fillRect(rectvals[j+0], rectvals[j+1],

                               rectvals[j+2], rectvals[j+3]);

                }

            }

            g.translate(-10, -y);

            y += 10;

        }

        g.dispose();

    }

    public static void initerrorbuf() {

        if (errorImg == null) {

            droperrorbuf();

            errorImg = new BufferedImage(TESTWIDTH, TESTHEIGHT,

                                         BufferedImage.TYPE_INT_RGB);

        }

        if (errorG == null) {

            errorG = errorImg.getGraphics();

        }

        errorG.setColor(Color.green);

        errorG.fillRect(0, 0, TESTWIDTH, TESTHEIGHT);

        errorG.setColor(Color.red);

    }

    public static void droperrorbuf() {

        errorImg = null;

        if (errorG != null) {

            errorG.dispose();

        }

        errorG = null;

    }

    public static void test(Image img, String name) {

        Graphics2D g2d = (Graphics2D) img.getGraphics();

        render(g2d);

        g2d.dispose();

        verify(img, name);

    }

    public static void test(BufferedImage bimg, String name) {

        Graphics2D g2d = bimg.createGraphics();

        render(g2d);

        g2d.dispose();

        verify(bimg, name);

    }

    public static void verify(Image img, String name) {

        BufferedImage bimg;

        if (img instanceof BufferedImage) {

            bimg = (BufferedImage) img;

        } else {

            bimg = new BufferedImage(TESTWIDTH, TESTHEIGHT,

                                     BufferedImage.TYPE_INT_RGB);

            Graphics g = bimg.getGraphics();

            g.drawImage(img, 0, 0, null);

            g.dispose();

        }

        verify(bimg, name);

    }

    public static boolean isFuzzyPixel(int X, int Y) {

        int ytrans = fuzzystarty;

        if (!fulltest || Y < ytrans) {

            return false;

        }

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

            int data[][] = polypts[i];

            if (data.length > 4) {

                int rectvals[] = data[4];

                for (int j = 0; j < rectvals.length; j += 4) {

                    int rectx = rectvals[j+0] + 10;

                    int recty = rectvals[j+1] + ytrans;

                    int rectw = rectvals[j+2];

                    int recth = rectvals[j+3];

                    if (X >= rectx && Y >= recty &&

                        X < rectx + rectw && Y < recty + recth)

                    {

                        return true;

                    }

                }

            }

            ytrans += 10;

        }

        return false;

    }

    public static void verify(BufferedImage bimg, String name) {

        int numbadpixels = 0;

        int numfuzzypixels = 0;

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

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

                if (refImg.getRGB(x, y) != bimg.getRGB(x, y)) {

                    boolean isfuzzy = isFuzzyPixel(x, y);

                    if (showerrors || showresults) {

                        if (errorG == null) {

                            initerrorbuf();

                        }

                        errorG.setColor(isfuzzy ? Color.blue : Color.red);

                        errorG.fillRect(x, y, 1, 1);

                    } else if (!counting && !isfuzzy) {

                        throw new RuntimeException("Error at "+x+", "+y+

                                                   " while testing: "+name);

                    }

                    if (isfuzzy) {

                        numfuzzypixels++;

                    } else {

                        numbadpixels++;

                    }

                }

            }

        }

        if (numbadpixels > 0 || numfuzzypixels > 0) {

            if (numbadpixels > 0) {

                totalbadpixels += numbadpixels;

                numbadtests++;

            }

            if (numfuzzypixels > 0) {

                totalfuzzypixels += numfuzzypixels;

                numfuzzytests++;

            }

            System.out.println(numbadpixels+" bad pixels and "+

                               numfuzzypixels+" questionable pixels "+

                               "found while testing "+name);

            if (showerrors || showresults) {

                displaydiffs(bimg, name);

            }

        } else if (showresults) {

            if (errorG == null) {

                initerrorbuf();

            }

            displaydiffs(bimg, name);

        }

    }

    public static void displaydiffs(BufferedImage bimg, String name) {

        if (fringe) {

            errorG.setColor(Color.yellow);

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

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

                    if (errorImg.getRGB(x, y) == RED) {

                        for (int iy = y-FRINGE; iy <= y+FRINGE; iy++) {

                            for (int ix = x-FRINGE; ix <= x+FRINGE; ix++) {

                                if (ix >= 0 && ix < TESTWIDTH &&

                                    iy >= 0 && iy < TESTHEIGHT &&

                                    errorImg.getRGB(ix, iy) == GREEN)

                                {

                                    errorG.fillRect(ix, iy, 1, 1);

                                }

                            }

                        }

                    }

                }

            }

        }

        Frame f = new Frame("Results for "+name);

        f.setLayout(new BorderLayout());

        f.addWindowListener(windowCloser);

        ++numframes;

        Panel p = new Panel();