Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/Java/Openjdk/test/jdk/java/awt/font/StyledMetrics/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 4 kB

Quelle BoldSpace.java Sprache: JAVA

/*
* Copyright (c) 2008, 2011, 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 6686365 7017637
  @summary Confirm that styling does not affect metrics of zero advance glyphs
*/

import java.awt.*;
import java.awt.image.*;

public class BoldSpace {
    public static void main(String[] s) {
        BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_INT_ARGB);

        String errMsg = "ZWJ Space char should have 0 advance\n";

        Graphics g = bi.getGraphics();

        // It turns out that some fonts inexplicably treat this as
        // a standard character. In this 14 pt font, if we see an advance
        // that's clearly bigger than we'd have introduced in bolding we'll
        // not error out this test, presuming that its a consequence of
        // the actual font data. A Linux font 'TLwg Type Bold' is the case
        // in point.
        int errorMargin = 4;
        g.setFont(new Font("monospaced", Font.BOLD, 14));
        FontMetrics fm = g.getFontMetrics();
        System.out.println("Bold: " + fm.charWidth('\u200b'));
        int cwid = fm.charWidth('\u200b');
        if (cwid > 0 && cwid < errorMargin) {
            throw new RuntimeException(errMsg);
        }

        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                                 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
        fm = g.getFontMetrics();
        System.out.println("Bold + LCD: "+fm.charWidth('\u200b'));
        cwid = fm.charWidth('\u200b');
        if (cwid > 0 && cwid < errorMargin) {
            throw new RuntimeException(errMsg);
        }

        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
                                 RenderingHints.VALUE_FRACTIONALMETRICS_ON);
        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                                 RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        fm = g.getFontMetrics();
        System.out.println("Bold FM OFF + AA: " + fm.charWidth('\u200b'));
        cwid = fm.charWidth('\u200b');
        if (cwid > 0 && cwid < errorMargin) {
            throw new RuntimeException(errMsg);
        }

        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
                                 RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                                 RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        fm = g.getFontMetrics();
        System.out.println("Bold FM ON + AA: " + fm.charWidth('\u200b'));
        cwid = fm.charWidth('\u200b');
        if (cwid > 0 && cwid < errorMargin) {
            throw new RuntimeException(errMsg);
        }

        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
                                 RenderingHints.VALUE_FRACTIONALMETRICS_ON);
        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
                                 RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
        fm = g.getFontMetrics();
        System.out.println("Bold FM ON + nonAA: " + fm.charWidth('\u200b'));
        cwid = fm.charWidth('\u200b');
        if (cwid > 0 && cwid < errorMargin) {
            throw new RuntimeException(errMsg);
        }

        System.out.println("All printed values should be 0 to PASS");
    }
}

quality91%

¤ Dauer der Verarbeitung: 0.18 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.