Bug 26758 - GdkFontPeer.getPostScriptFontName unimplemented
Summary: GdkFontPeer.getPostScriptFontName unimplemented
Alias: None
Product: classpath
Classification: Unclassified
Component: awt (show other bugs)
Version: unspecified
: P3 normal
Target Milestone: ---
Assignee: Not yet assigned to anyone
Depends on:
Reported: 2006-03-19 13:37 UTC by Roman Kennke
Modified: 2006-05-20 23:25 UTC (History)
2 users (show)

See Also:
Known to work:
Known to fail:
Last reconfirmed: 2006-03-19 19:56:30


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Description Roman Kennke 2006-03-19 13:37:59 UTC
The Openstreetmap applet expects java.awt.Font.getPSFontName() to return something non-null.
Comment 1 Roman Kennke 2006-03-19 18:41:53 UTC
Of course I mean getPostScriptName() and not getPostScriptFontName().
Comment 2 Mark Wielaard 2006-03-19 19:03:36 UTC
Is the code that uses this available somewhere?
Seeing how the result is used/parsed would help determine what format to return.
Comment 3 Roman Kennke 2006-03-19 19:18:39 UTC


Search for getPSName(). Though AFAICS it wouldn't hurt to return anything for a start.
Comment 4 pere 2006-03-19 19:42:26 UTC
This is the problematic code:

      // this font may or may not be installed
      font = new Font(name, Font.PLAIN, size);
      // if the ps name matches, then we're in fine shape
      if (!font.getPSName().equals(psname)) {
        // on osx java 1.4 (not 1.3.. ugh), you can specify the ps name
        // of the font, so try that in case this .vlw font was created on pc
        // and the name is different, but the ps name is found on the
        // java 1.4 mac that's currently running this sketch.
        font = new Font(psname, Font.PLAIN, size);
      // check again, and if still bad, screw em
      if (!font.getPSName().equals(psname)) {
        font = null;

When getPSName() return null, the test throw NullPointerException.
Comment 5 Mark Wielaard 2006-03-19 19:56:30 UTC
And psname is read from the font file. It seems the code assumes this is equal to the font family name. So doing something like this might be a good idea as a start:

diff -u -r1.8 GdkFontPeer.java
--- gnu/java/awt/peer/gtk/GdkFontPeer.java      16 Mar 2006 20:21:09 -0000     1.8
+++ gnu/java/awt/peer/gtk/GdkFontPeer.java      19 Mar 2006 19:48:44 -0000
@@ -158,7 +158,7 @@

   public String getPostScriptName(Font font)
-    return null;
+    return this.familyName;

   public boolean canDisplay (Font font, char c)

BTW. We also have a (no unused) GtkFontPeer implementation that should be removed to avoid confusion.
Comment 6 Mark Wielaard 2006-03-19 22:59:15 UTC
Checked in the following as current workaround:

2006-03-19  Mark Wielaard  <mark@klomp.org>

        * gnu/java/awt/peer/gtk/GdkFontPeer.java (getPostScriptName): Return
        * gnu/java/awt/peer/gtk/GtkFontPeer.java: Removed unused file.
Comment 7 Sven de Marothy 2006-05-17 01:01:50 UTC
A mapping .properties file is needed.
Comment 8 Roman Kennke 2006-05-17 09:09:16 UTC
Isn't a PS name ususally stored in the TTF file?
Comment 9 Sven de Marothy 2006-05-20 09:00:36 UTC
Roman: Looking at the TT specification, it looks like you're right. Hacking together an implementation of this shouldn't be so hard.
Comment 10 Sven de Marothy 2006-05-20 12:38:19 UTC
Okidoki, I've got an implementation for this now.
Comment 11 Sven de Marothy 2006-05-20 23:25:01 UTC
Commited my implementation.