1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 8233097

    27  * @summary Test we get non-zero metrics with large sizes.

    28  * @run main MassiveMetricsTest

    29  */

    30 

    31 import java.awt.Font;

    32 import java.awt.FontMetrics;

    33 import java.awt.Graphics2D;

    34 import java.awt.GraphicsEnvironment;

    35 import java.awt.image.BufferedImage;

    36 

    37 public class MassiveMetricsTest {

    38 

    39     public static void main(String [] args) {

    40 

    41         GraphicsEnvironment ge =

    42             GraphicsEnvironment.getLocalGraphicsEnvironment();

    43         Font[] fonts = ge.getAllFonts();

    44         BufferedImage bi = new BufferedImage(1,1,1);

    45         Graphics2D g2d = bi.createGraphics();

    46         int[] sizes = { 80, 100, 120, 600, 1600, 2400, 3600, 7200, 12000 };

    47         String s = "m";

    48 

    49         for (Font f : fonts) {

    50             Font sz12Font = f.deriveFont(Font.PLAIN, 12);

    51             FontMetrics sz12 = g2d.getFontMetrics(sz12Font);

    52             if (sz12.stringWidth(s) == 0) {

    53                 continue; // code point not supported or similar.

    54             }

    55             boolean fail = false;

    56             for (int sz : sizes) {

    57                 Font font = f.deriveFont(Font.PLAIN, sz);

    58                 FontMetrics fm = g2d.getFontMetrics(font);

    59                 if (fm.stringWidth(s) == 0) {

    60                   fail = true;

    61                   System.err.println("zero for " + font);

    62                 }

    63             }

    64             if (fail) {

    65                 throw new RuntimeException("Zero stringwidth");

    66             }

    67         }

    68     }

    69 }