Cannot enable sans-serif fonts for "wxt" on Windows

Daniel Dan K. — Fri, 31 Mar 2023 08:20:02 -0000

SF support team solved this issue. 👍

Cannot enable sans-serif fonts for "wxt" on Windows

Tatsuro MATSUOKA — Thu, 30 Mar 2023 08:06:33 -0000

Yes, it is very strange. I have never experience such phenomena.

Cannot enable sans-serif fonts for "wxt" on Windows

Daniel Dan K. — Thu, 30 Mar 2023 07:22:32 -0000

Strange, all earlier postings have been gone. I wonder why this discussion has been deleted.

My screenshots are gone, also. To file a bug on this issue I planned to reuse text and screenshots from this thread. Now I'd have to generate them from scratch. :-(

Cannot enable sans-serif fonts for "wxt" on Windows

Daniel Dan K. — Thu, 30 Mar 2023 07:18:19 -0000

Dear MATSUOKA-san,

I'll happily file a new bug on this topic.

Cannot enable sans-serif fonts for "wxt" on Windows

SourceForge Support — Wed, 29 Mar 2023 09:34:35 -0000

BTW, the issue should be treated as a bug. Can you post a bug ticket?

Cannot enable sans-serif fonts for "wxt" on Windows

SourceForge Support — Wed, 29 Mar 2023 09:34:34 -0000

Hmm. I cannot test by myself because I do not have HR displays.
One possible treatment is try to set the PANGOCAIRO_BACKEND envrionmental variable to "fc" (fontconfig) using the Windows setting feature.
On Windows, the native pangocairo backend is win32.
For other platforms the fontconfig is used for font handling.
So please try the fontconfig backend.
The win32 backend behaves worse than the fontconfig backend for the pngcairo terminals.
See https://sourceforge.net/p/gnuplot/bugs/2512/

Cannot enable sans-serif fonts for "wxt" on Windows

SourceForge Support — Wed, 29 Mar 2023 09:34:33 -0000

Dear Matsuoka-san,

I tried the commands. These are my observations:

Up to (and including) a display scaling of 225%, I see a "sans" font in the plot window.
With 250% display scaling, a "serif" font is used in the plot window.
With 300% display scaling (which is the "recommended" value on my display), the plot is covered by huge letters and a warning message appears on the console.

Please see the attached files for screenshots.
Thanks.
Daniel

Cannot enable sans-serif fonts for "wxt" on Windows

SourceForge Support — Wed, 29 Mar 2023 09:34:33 -0000

Sans and Sans Serif themselves are not Windows fonts. I cannot guarantee that the fonts which are not registered in Windows font system display correctly. I think this is a font alias issue. If you use 'Microsoft Sans Serif' which exist on Windows, what happens if you use

set terminal wxt font 'Microsoft Sans Serif'
plot sin(x)

Cannot enable sans-serif fonts for "wxt" on Windows

SourceForge Support — Wed, 29 Mar 2023 09:34:32 -0000

Dear Matsuoka-san,

I found out why the terminal "wxt" can use "sans" fonts on one computer and fails to use them on another:

If I set the display scaling to 250% (or higher), the above mentioned behaviour occurs.

If I reduce the scaling below 250%, everything works as expected: "sans" font is used automatically, gnuplot issues no warnings.

If you consider this a bug, I'll happily file a ticket.

Best regards,
Daniel

Cannot enable sans-serif fonts for "wxt" on Windows

SourceForge Support — Wed, 29 Mar 2023 09:34:31 -0000

Altertively, I add the fontconfig config file ant related files to the current 5.4.6 windows binary packages. New binary packages are available the gnuplot SF site.

If you set the PANGOCAIRO_BACKEND variable to fc (fontconfig), you can use fontconfig backend rather than win32 backend on cairo related terminals incluiding the wxt terminal.

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