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 }