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  1. JDK
  2. JDK-6476980

deriveFont is not working on FontUIResource with a dynamically loaded TTF

    Details

    • Subcomponent:
      2d
    • Resolved In Build:
      b01
    • CPU:
      x86
    • OS:
      windows_2000

      Description

      FULL PRODUCT VERSION :
      java version "1.5.0_08"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_08-b03)
      Java HotSpot(TM) Client VM (build 1.5.0_08-b03, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows 2000 [Version 5.00.2195]

      Linux hun129ux 2.6.8-24-smp #1 SMP Wed Oct 6 09:16:23 UTC 2004 i686 i686 i386 GNU/Linux

      A DESCRIPTION OF THE PROBLEM :
      deriveFont is not working with an instance of FontUIResource, which was instantiated with a dynamically loaded true type font.

      PRECONDITION: the custom true type font specified in the createFont method must not be registered at the operating system level!

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. Create a new font object by dynamically loading it from a file.
      2. Create a new FontUIResource instance by passing it the font object created in the previous step.
      3. Derive a new font object with deriveFont by, for example, changing the size. The deriveFont should be called on the FontUIResource instance created in the previous step.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The expected result should be a new font whose size has been changed as specified. The 'new font' here refers to the TTF loaded from the file.
      ACTUAL -
      Only the font size has changed, but the font is not what is loaded from the file.

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.awt.*;
      import java.awt.event.*;
      import javax.swing.*;
      import javax.swing.plaf.*;
      import java.io.*;

      /**
       * An application that demonstrates a JDK bug: deriveFont is not working with an
       * instance of FontUIResource, which was instantiated with a dynamically loaded
       * true type font. The true type font file must be located in the same folder where
       * the compiled class files of this program can be found.
       *
       * PRECONDITION: the custom true type font specified in the createFont method must not
       * be registered at the operating system level!
       */
      public class BugDemonstrationPanel extends JPanel {
          static JFrame frame;
          private JLabel testLabel;
          private Font labelFont;
          public BugDemonstrationPanel() {
              InputStream fontStream =
                  BugDemonstrationPanel.class.getResourceAsStream("<your TTF file name here>");
              if (fontStream != null) {
                  try {
                      labelFont = Font.createFont(Font.TRUETYPE_FONT, fontStream);
                      labelFont = new FontUIResource(labelFont).deriveFont((float) 24);
                      // If you use the next line instead of the previous one, everything works!
                      // labelFont = labelFont.deriveFont((float) 24);
                      System.out.println(labelFont.toString());
                      fontStream.close();
                  } catch (Exception e) {}
                  testLabel = new JLabel();
                  testLabel.setText("Only the font size changed, but not the font itself!");
                  testLabel.setFont(labelFont);
                  setSize(300, 200);
                  add(testLabel);
      }
          }

          public static void main(String s[]) {
              BugDemonstrationPanel panel = new BugDemonstrationPanel();
              frame = new JFrame(BugDemonstrationPanel.class.toString());
              frame.addWindowListener(new WindowAdapter() {
                  public void windowClosing(WindowEvent e) {System.exit(0);}
              });
              frame.add(panel);
              frame.pack();
              frame.setVisible(true);
          }
      }

      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      By not using the FontUIResource (as the demo code shows) everything works as expected.

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            • Assignee:
              prr Philip Race
              Reporter:
              prr Philip Race
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                Updated:
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