[dolphin] [Bug 489967] New: Filenames containing CJK characters are wrongly padded resulting in excessive whitespace

[hch12907]

https://bugs.kde.org/show_bug.cgi?id=489967

            Bug ID: 489967
           Summary: Filenames containing CJK characters are wrongly padded
                    resulting in excessive whitespace
    Classification: Applications
           Product: dolphin
           Version: 24.05.2
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: haochengho12907 at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 171495
  --> https://bugs.kde.org/attachment.cgi?id=171495&action=edit
Screenshot of the bug

SUMMARY
I noticed that filenames containing CJK characters are not vertical-centrally
aligned in details mode, it looks like they are overly padded from the top.

In icons view mode, when the files are selected, the selection box of
CJK-containing filenames looks taller than the selection box of Latin-only
filenames.

As you can see from the screenshot, when those files are mixed with other
Latin-only filenames there is excessive whitespace, which looks jarring. For
example, look at Main.txt and Name 名字.txt.

STEPS TO REPRODUCE
1. Create a directory containing files with Latin-only filename and mixed
CJK-Latin filename.
2. In any view (icons, details, compact) you should notice the CJK-containing
filenames look odd. 

OBSERVED RESULT
Filenames wrongly rendered, with excessive whitespace

EXPECTED RESULT
Filenames correctly rendered

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
Kernel Version: 6.9.7-arch1-1 (64-bit)
Graphics Platform: Wayland
Scaling factor: 125% @ 1080p

ADDITIONAL INFORMATION
Since this is related to text, I figured I should note the fonts used are Inter
10.5px for Latin and Source Han Sans SC for CJK. Changing to other fonts like
FreeSans 11px doesn't resolve the issue, though.

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