Re: [PATCH] Fix default font scaling

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Am 15.06.24 um 10:53 schrieb Serhii Tereshchenko:
> This fixes font scaling for default fonts, where we don't set font
> sizes explicitly.
> 
> Without this, on 4k monitor with text-scaling-factor configured in Gnome,
> labels, buttons and settings are using very small font sizes. (Probably,
> not just Gnome but anything that sets custom DPI).
> 
> Screenshots here: https://twiukraine.com/@partizan/112619567918546426
> 
> Signed-off-by: Serhii Tereshchenko <serg.partizan@xxxxxxxxx>

Thank you. I have adjusted the title to read

  git-gui: fix scaled default fonts

to follow the convention.

> ---
>  git-gui.sh | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/git-gui.sh b/git-gui.sh
> index 8bc8892..23dd82d 100755
> --- a/git-gui.sh
> +++ b/git-gui.sh
> @@ -810,6 +810,16 @@ if {[is_Windows]} {
>  ## config defaults
>  
>  set cursor_ptr arrow
> +
> +# For whatever reason, Tk does not apply font scaling to default fonts,
> +# but applies font scaling when setting size explicitly.
> +# Default -size 10 is still 10, when you look at it with `font actual ...`,
> +# but explicitl -size 10 becomes 10 * scale factor.

I fixed this typo: s/explicitl/explict/

> +# So, we need to configure fonts to use their default font sizes, but scaled.
> +foreach font_name [font names] {
> +	font configure $font_name -size [font actual $font_name -size]
> +}

Have you seen https://wiki.tcl-lang.org/page/font+scaling where [font
configure ...] instead of [font actual ...] is suggested as a preferable
solution? I am not so much into Tcl/Tk that I can judge what is best.

> +
>  font create font_ui
>  if {[lsearch -exact [font names] TkDefaultFont] != -1} {
>  	eval [linsert [font actual TkDefaultFont] 0 font configure font_ui]

My setup does not have a 4k monitor, I run KDE and I do not know if I
have changed a DPI setting. For the test, I have removed the [gui]
sections from my configurations to ensure that the defaults are used.

Under these conditions, this change does not make a difference in how
Git GUI appears. I assume this is the expected outcome, so I take it as
a good sign.

The patch is available as

https://github.com/j6t/git-gui.git st/font-scaling-fix

for others to test. I'd appreciate your feedback.

-- Hannes





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