Quelle XORPaint.java Sprache: JAVA

/*
* Copyright (c) 2005, 2022, 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
* @bug 5106309
* @key headful
* @summary Verifies that XOR mode works properly for all pipelines
* (for both simple Colors and complex Paints).
*
* @requires (os.family == "windows")
* @run main/othervm XORPaint
* @run main/othervm -Dsun.java2d.d3d=True -Dsun.java2d.uiScale=1 XORPaint
* @run main/othervm -Dsun.java2d.d3d=True -Dsun.java2d.uiScale=1.25 XORPaint
* @run main/othervm -Dsun.java2d.d3d=True -Dsun.java2d.uiScale=1.5 XORPaint
* @run main/othervm -Dsun.java2d.d3d=True -Dsun.java2d.uiScale=1.75 XORPaint
* @run main/othervm -Dsun.java2d.d3d=True -Dsun.java2d.uiScale=2 XORPaint
* @run main/othervm -Dsun.java2d.d3d=false -Dsun.java2d.uiScale=1 XORPaint
* @run main/othervm -Dsun.java2d.d3d=false -Dsun.java2d.uiScale=1.25 XORPaint
* @run main/othervm -Dsun.java2d.d3d=false -Dsun.java2d.uiScale=1.5 XORPaint
* @run main/othervm -Dsun.java2d.d3d=false -Dsun.java2d.uiScale=1.75 XORPaint
* @run main/othervm -Dsun.java2d.d3d=false -Dsun.java2d.uiScale=2 XORPaint
*/

/*
* @test
* @bug 5106309
* @key headful
* @summary Verifies that XOR mode works properly for all pipelines
* (for both simple Colors and complex Paints).
*
* @requires (os.family == "mac")
* @run main/othervm XORPaint
* @run main/othervm -Dsun.java2d.opengl=True -Dsun.java2d.uiScale=1 XORPaint
* @run main/othervm -Dsun.java2d.opengl=True -Dsun.java2d.uiScale=2 XORPaint
* @run main/othervm -Dsun.java2d.metal=True -Dsun.java2d.uiScale=1 XORPaint
* @run main/othervm -Dsun.java2d.metal=True -Dsun.java2d.uiScale=2 XORPaint
*/

/*
* @test
* @bug 5106309
* @key headful
* @summary Verifies that XOR mode works properly for all pipelines
* (for both simple Colors and complex Paints).
*
* @requires (os.family == "linux")
* @run main/othervm XORPaint
* @run main/othervm -Dsun.java2d.xrender=True -Dsun.java2d.uiScale=1 XORPaint
* @run main/othervm -Dsun.java2d.xrender=True -Dsun.java2d.uiScale=2 XORPaint
* @run main/othervm -Dsun.java2d.xrender=false -Dsun.java2d.uiScale=1 XORPaint
* @run main/othervm -Dsun.java2d.xrender=false -Dsun.java2d.uiScale=2 XORPaint
*/

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Panel;
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.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public class XORPaint extends Panel {

    private static final int WHITE = 0xffffffff;
    private static final int BLUE  = 0xff0000ff;

    public void paint(Graphics g) {
        Graphics2D g2d = (Graphics2D)g;

        g2d.setColor(Color.white);
        g2d.fillRect(0, 0, getWidth(), getHeight());

        // render the tests without antialiasing
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             RenderingHints.VALUE_ANTIALIAS_OFF);
        renderTests(g2d, "This is non-AA text");

        // now do the above tests again, this time with antialiasing
        g2d.translate(0, 100);
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             RenderingHints.VALUE_ANTIALIAS_ON);
        renderTests(g2d, "This is AA text");
    }

    private void renderTests(Graphics2D g2d, String text) {
        g2d.setFont(new Font("Dialog", Font.PLAIN, 12));
        g2d.setColor(Color.blue);
        g2d.setXORMode(Color.white);

        // fill a rectangle once and make sure it is blue
        g2d.fillRect(5, 5, 20, 20);

        // fill another rectangle twice and make sure it is reversible
        // (should produce the background color)
        g2d.fillRect(35, 5, 20, 20);
        g2d.fillRect(35, 5, 20, 20);

        // draw a string once and make sure it is blue
        g2d.drawString(text, 5, 50);

        // draw another string twice and make sure it is reversible
        // (should produce the background color)
        g2d.drawString(text, 5, 70);
        g2d.drawString(text, 5, 70);

        g2d.setPaint(new GradientPaint(0.0f, 0.0f, Color.blue,
                                       100.0f, 100.f, Color.blue, true));
        g2d.fillRect(70, 5, 20, 20);
    }

    /*
     * Not great having to allow any tolerance but some of
     * the scaling down for screen captures seems to introduce
     * tiny rounding errors that aren't consistent.
     * Allow a very small tolerance for this
     */
    private static boolean pixelsMatch(int p1, int p2) {
        // note : ignoring alpha
        int tol = 1;
        int r1 = p1 & 0x00ff0000 >> 16;
        int g1 = p1 & 0x0000ff00 >> 8;
        int b1 = p1 & 0x000000ff;
        int r2 = p2 & 0x00ff0000 >> 16;
        int g2 = p2 & 0x0000ff00 >> 8;
        int b2 = p2 & 0x000000ff;
        int rd = r2 - r1; if (rd < 0) rd = -rd;
        int gd = g2 - g1; if (gd < 0) gd = -gd;
        int bd = b2 - b1; if (bd < 0) bd = -bd;
        return (rd <= tol && gd <= tol && bd <= tol);
    }

    private static void testPixel(BufferedImage capture,
                                  int x, int y, int expectedPixel,
                                  String testDesc, boolean expectedRes)
    {
        int pixel = capture.getRGB(x, y);
        if (expectedRes) {
            if (!pixelsMatch(pixel, expectedPixel)) {
                try {
                    ImageIO.write(capture, "png", new File("capture.png"));
                } catch (IOException e) {
                    System.err.println("can't write image " + e);
                }
                throw new RuntimeException(
                        "Failed: Incorrect color for " + testDesc
                                + " at (" + x + ", " + y + ") "
                                + "(expected: " + Integer
                                .toHexString(expectedPixel) + " actual: "
                                + Integer.toHexString(pixel) + ")");
            }
        } else {
            if (pixelsMatch(pixel, expectedPixel)) {
                try {
                    ImageIO.write(capture, "png", new File("capture.png"));
                } catch (IOException e) {
                    System.err.println("can't write image " + e);
                }
                throw new RuntimeException(
                        "Failed: Incorrect color for " + testDesc +
                                " at (" + x + ", " + y + ") " +
                                " : 0x" + Integer.toHexString(pixel));
            }
        }
    }

    private static void testPixels(BufferedImage capture,
                                   int yoff, String type)
    {
        testPixel(capture, 10,  yoff+10,   BLUE, "solid rect"+type , true);
        testPixel(capture, 40, yoff+10,  WHITE, "erased solid rect"+type, true);

        testPixel(capture, 80, yoff+10,   BLUE, "GradientPaint rect"+type, true);
        testPixel(capture, 5,  yoff+61, WHITE, "erased text"+type, true);
    }

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

        final Frame frame = new Frame("XORPaint Test");
        final XORPaint xorPanel = new XORPaint();
        EventQueue.invokeAndWait(() -> {
            frame.add(xorPanel);
            frame.setUndecorated(true);
            frame.pack();
            frame.setSize(250, 250);
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        });

        Toolkit.getDefaultToolkit().sync();
        Robot robot = new Robot();
        robot.waitForIdle();
        robot.delay(2000);
        Point pt1 = xorPanel.getLocationOnScreen();
        Rectangle rect = new Rectangle(pt1.x, pt1.y, 200, 200);
        BufferedImage capture = robot.createScreenCapture(rect);

        EventQueue.invokeAndWait(() -> frame.dispose());

        // Make sure we have a white background, for starters
        testPixel(capture, 180, 180, WHITE, "background", true);

        // Test the non-AA primitives
        testPixels(capture, 0, " (non-AA)");

        // Test the AA primitives
        testPixels(capture, 100, " (AA)");
    }
}

quality93%

¤ Dauer der Verarbeitung: 0.14 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.