[jira] [Created] (NETBEANS-4533) hinese characters not displayed in table header for ordered column (Windows Look&Feel)

["Adrien DE GEORGES (Jira)" <ji...@apache.org>]

Adrien DE GEORGES created NETBEANS-4533:
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             Summary: hinese characters not displayed in table header for ordered column (Windows Look&Feel)
                 Key: NETBEANS-4533
                 URL: https://issues.apache.org/jira/browse/NETBEANS-4533
             Project: NetBeans
          Issue Type: Bug
          Components: platform - Outline&TreeTable
         Environment: Windows 7, using the Windows Look and Feel.
            Reporter: Adrien DE GEORGES
         Attachments: BugETableChinese.zip, ETableHeader.java.v8.2.patch

Scenario:
* Use the Windows Look and Feel in your Java application (with Metal: no problem).
* Create a ETable with a column header having characters in Chinese or Japanese (or any not supported by Tahoma font).
* When running the program, click on this header to sort the column => these characters will be replaced by a square.
(small Maven project attached, with 1 class and one main method)

Root cause:
The headers of the sorted columns will be rendered in bold by the ETable, which is done in "ETableHeader::getTableCellRendererComponent". This code takes the font of the JLabel used for the rendering, and creates a similar font in bold. For that, it does not uses "Font::deriveFont(...)" (because of a 2005 bug with Apple's JVM), but uses "(new Font (label.getFont().getName(), ...)".
Under Windows it is a problem:
* the default font (used here by the JLabel) is a composite font
* from what I understand, a composite font is a list of physical fonts, which will be successively used to try to render a given character.
* this list of the physical fonts contains one that supports Chinese characters.
* label.getFont().getName() retrieves the name of the first font of the composite font, in the case of the Windows Look and Feel it is "Tahoma" (which does not support Chinese).
* so the "new Font(...)" used as a header renderer will be only "Tahoma", hence the square characters.

Does this analysis makes sense for you?

My suggestion would be to revert the patch from 2005. I don't have a Mac to my disposition to test that its works though.

Old code:
// don't use deriveFont() - see #49973 for details
label.setFont (new Font (label.getFont ().getName (), Font.BOLD, label.getFont ().getSize ()));

New code:
label.setFont(label.getFont().deriveFont(Font.BOLD));

A patch is attached in the ticket.

Please note that this is a duplicate of a bug already logged in the old Bugzilla : [https://bz.apache.org/netbeans/show_bug.cgi?id=270091]



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