Re: [Tkinter-discuss] 4k HiDPI displays and tkinter [cont]
I forgot to reply to you,
>>> f=font.Font(name='TkDefaultFont', exists=1)
>>> rowheight=f.metrics('linespace')+2
>>> rowheight
works beautifully.
Many thanks!!
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Re: [Tkinter-discuss] 4k HiDPI displays and tkinter [cont]
Hi,
On Thu, 17 Mar 2022 09:47:16 +
Vasilis Vlachoudis wrote:
> Hi Michael,
>
> no I am using the default fonts.
> What is different is the I have set a high DPI for the X-server to
> match the screen resolution.
>
> I saw in the page
> https://www.tcl.tk/man/tcl/TkCmd/ttk_treeview.html
>
> under "Styling Options'
> there is parameter to set the -rowheight
> that needs to be defined as
>
> ttk::style configure Treeview \
> -rowheight [expr {[font metrics font -linespace] + 2}]
>
> however I could not find how to call this command, and when
> If I do the following
>
> style = ttk.Style()
> style.configure("Treeview", rowheight="30")
>
> it works, but it is not dynamic with the font size/dpi
you could do something like
>>> f=font.Font(name='TkDefaultFont', exists=1)
>>> rowheight=f.metrics('linespace')+2
>>> rowheight
17
This value is in pixels; I am not sure, if you did something to the
dpi setting, maybe you still need to increase this value somehow according
to the scaling factor in use, which you should be able to query with:
>>> root.tk.call('tk', 'scaling')
1.2450980392156863
I am just doing guesswork here, though.
Regards
Michael
.-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-.
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-- Spock, "Journey to Babel", stardate 3842.4
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Re: [Tkinter-discuss] 4k HiDPI displays and tkinter [cont]
Hi Michael,
no I am using the default fonts.
What is different is the I have set a high DPI for the X-server to match the
screen resolution.
I saw in the page
https://www.tcl.tk/man/tcl/TkCmd/ttk_treeview.html
under "Styling Options'
there is parameter to set the -rowheight
that needs to be defined as
ttk::style configure Treeview \
-rowheight [expr {[font metrics font -linespace] + 2}]
however I could not find how to call this command, and when
If I do the following
style = ttk.Style()
style.configure("Treeview", rowheight="30")
it works, but it is not dynamic with the font size/dpi
Vasilis
From: Tkinter-discuss
[tkinter-discuss-bounces+vasilis.vlachoudis=cern...@python.org] on behalf of
Michael Lange [klappn...@web.de]
Sent: Thursday, March 17, 2022 10:35
To: tkinter-discuss@python.org
Subject: Re: [Tkinter-discuss] 4k HiDPI displays and tkinter [cont]
Hi,
On Wed, 16 Mar 2022 16:16:36 +
Vasilis Vlachoudis wrote:
> On the same topic of HiDPI screens, the Treeview seems to calculate
> wrongly the font height (see attach image)
> Do you know any way to correct that?
>
are you possibly using a point-sized font? If yes, maybe there is some
dpi issue again?
Regards
Michael
.-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-.
No problem is insoluble.
-- Dr. Janet Wallace, "The Deadly Years", stardate 3479.4
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Re: [Tkinter-discuss] 4k HiDPI displays and tkinter [cont]
Hi, On Wed, 16 Mar 2022 16:16:36 + Vasilis Vlachoudis wrote: > On the same topic of HiDPI screens, the Treeview seems to calculate > wrongly the font height (see attach image) > Do you know any way to correct that? > are you possibly using a point-sized font? If yes, maybe there is some dpi issue again? Regards Michael .-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-. No problem is insoluble. -- Dr. Janet Wallace, "The Deadly Years", stardate 3479.4 ___ Tkinter-discuss mailing list Tkinter-discuss@python.org https://mail.python.org/mailman/listinfo/tkinter-discuss
Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
Title: signature
style.configure("TScrollbar", arrowsize=10)
Regards
Paul
Malherbe
Phone
+27(0)28 314 0092
Mobile
+27(0)82 900 5260
On 2021/07/14 16:22, Vasilis Vlachoudis
wrote:
I am trying to change the tk widgets
to ttk, so I can globally correct them, e.g.
root=tk.Tk()
sb=ttk.Scrollbar(root)
sb.pack(side=tk.RIGHT,fill=tk.Y)
style=ttk.Style()
style.configure("TScrollbar",
width="10m")
However the width doesn't apply on the up/downarrows which
they remain tiny.
Where I can find the style options that I can change?
I've tried
style.configure("TScrollbar.uparrow",
width="10m")
but doesn't work
Vasilis
From:
Tkinter-discuss
[tkinter-discuss-bounces+vasilis.vlachoudis=cern...@python.org]
on behalf of Vasilis Vlachoudis
[vasilis.vlachou...@cern.ch]
Sent: Wednesday, July 14, 2021 15:48
To: Aivar Annamaa; tkinter-discuss@python.org
Subject: Re: [Tkinter-discuss] 4k HiDPI
displays and tkinter
Thank you all for the
suggestions.
I am going to try them.
It would have been nice it tk had a global option
to rescale everything by x2
Like in XFCE window manager
Vasilis
From:
Tkinter-discuss
[tkinter-discuss-bounces+vasilis.vlachoudis=cern...@python.org]
on behalf of Aivar Annamaa
[aivar.anna...@gmail.com]
Sent: Tuesday, July 13, 2021 12:41
To: tkinter-discuss@python.org
Subject: Re: [Tkinter-discuss] 4k HiDPI
displays and tkinter
If you want to relate your screen
distances to the size of characters in a font,
then you could use font's `measure` method to
compute pixel distances for
em-s: https://github.com/thonny/thonny/blob/3f2607ff0b27ffedac9b24a107ea9fff5f6b1f1f/thonny/ui_utils.py#L2271
Best regards,
Aivar
On Mon, Jul
12, 2021 at 8:13 PM Vasilis Vlachoudis <vasilis.vlachou...@cern.ch>
wrote:
Recently I've got a 4k laptop, and the
first experience with linux and the 4k
display is quite painful.
I am still trying to tune it but
for the moment my tkinter applications
do not render nicely on such a
display.
- all widths like borderwidths,
decorations, separators etc, set in
pixels do not scale with the dpi
settings. Could we use "mm" for their
settings instead?
- c
Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
Hi,
On Wed, 14 Jul 2021 14:22:37 +
Vasilis Vlachoudis wrote:
> I am trying to change the tk widgets to ttk, so I can globally correct
> them, e.g. root=tk.Tk()
> sb=ttk.Scrollbar(root)
> sb.pack(side=tk.RIGHT,fill=tk.Y)
> style=ttk.Style()
> style.configure("TScrollbar", width="10m")
>
> However the width doesn't apply on the up/downarrows which they remain
> tiny. Where I can find the style options that I can change?
> I've tried
> style.configure("TScrollbar.uparrow", width="10m")
> but doesn't work
looking at defaults.tcl helps :)
At least here on X11 with default ttk style
st.configure('TScrollbar', width='10m', arrowsize='10m')
works.
With the default style scaling a checkbutton with
st.configure('TCheckbutton', indicatordiameter='10m')
also works, not with the "alt" theme though (I guess they are using a
bitmap there again).
Best regards
Michael
.-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-.
Without freedom of choice there is no creativity.
-- Kirk, "The return of the Archons", stardate 3157.4
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Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
I am trying to change the tk widgets to ttk, so I can globally correct them,
e.g.
root=tk.Tk()
sb=ttk.Scrollbar(root)
sb.pack(side=tk.RIGHT,fill=tk.Y)
style=ttk.Style()
style.configure("TScrollbar", width="10m")
However the width doesn't apply on the up/downarrows which they remain tiny.
Where I can find the style options that I can change?
I've tried
style.configure("TScrollbar.uparrow", width="10m")
but doesn't work
Vasilis
From: Tkinter-discuss
[tkinter-discuss-bounces+vasilis.vlachoudis=cern...@python.org] on behalf of
Vasilis Vlachoudis [vasilis.vlachou...@cern.ch]
Sent: Wednesday, July 14, 2021 15:48
To: Aivar Annamaa; tkinter-discuss@python.org
Subject: Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
Thank you all for the suggestions.
I am going to try them.
It would have been nice it tk had a global option to rescale everything by x2
Like in XFCE window manager
Vasilis
From: Tkinter-discuss
[tkinter-discuss-bounces+vasilis.vlachoudis=cern...@python.org] on behalf of
Aivar Annamaa [aivar.anna...@gmail.com]
Sent: Tuesday, July 13, 2021 12:41
To: tkinter-discuss@python.org
Subject: Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
If you want to relate your screen distances to the size of characters in a
font, then you could use font's `measure` method to compute pixel distances for
em-s:
https://github.com/thonny/thonny/blob/3f2607ff0b27ffedac9b24a107ea9fff5f6b1f1f/thonny/ui_utils.py#L2271
Best regards,
Aivar
On Mon, Jul 12, 2021 at 8:13 PM Vasilis Vlachoudis
mailto:vasilis.vlachou...@cern.ch>> wrote:
Recently I've got a 4k laptop, and the first experience with linux and the 4k
display is quite painful.
I am still trying to tune it but for the moment my tkinter applications do not
render nicely on such a display.
- all widths like borderwidths, decorations, separators etc, set in pixels do
not scale with the dpi settings. Could we use "mm" for their settings instead?
- checkbox, radiobox the indicator appears tiny wrt the text
Is there a way to detect from tkinter a high res display and force a window
scaling x2 for everything?
What is your experience with such displays?
Vasilis
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Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
Thank you all for the suggestions. I am going to try them. It would have been nice it tk had a global option to rescale everything by x2 Like in XFCE window manager Vasilis From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern...@python.org] on behalf of Aivar Annamaa [aivar.anna...@gmail.com] Sent: Tuesday, July 13, 2021 12:41 To: tkinter-discuss@python.org Subject: Re: [Tkinter-discuss] 4k HiDPI displays and tkinter If you want to relate your screen distances to the size of characters in a font, then you could use font's `measure` method to compute pixel distances for em-s: https://github.com/thonny/thonny/blob/3f2607ff0b27ffedac9b24a107ea9fff5f6b1f1f/thonny/ui_utils.py#L2271 Best regards, Aivar On Mon, Jul 12, 2021 at 8:13 PM Vasilis Vlachoudis mailto:vasilis.vlachou...@cern.ch>> wrote: Recently I've got a 4k laptop, and the first experience with linux and the 4k display is quite painful. I am still trying to tune it but for the moment my tkinter applications do not render nicely on such a display. - all widths like borderwidths, decorations, separators etc, set in pixels do not scale with the dpi settings. Could we use "mm" for their settings instead? - checkbox, radiobox the indicator appears tiny wrt the text Is there a way to detect from tkinter a high res display and force a window scaling x2 for everything? What is your experience with such displays? Vasilis ___ Tkinter-discuss mailing list Tkinter-discuss@python.org<mailto:Tkinter-discuss@python.org> https://mail.python.org/mailman/listinfo/tkinter-discuss ___ Tkinter-discuss mailing list Tkinter-discuss@python.org https://mail.python.org/mailman/listinfo/tkinter-discuss
Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
If you want to relate your screen distances to the size of characters in a font, then you could use font's `measure` method to compute pixel distances for *em*-s: https://github.com/thonny/thonny/blob/3f2607ff0b27ffedac9b24a107ea9fff5f6b1f1f/thonny/ui_utils.py#L2271 Best regards, Aivar On Mon, Jul 12, 2021 at 8:13 PM Vasilis Vlachoudis < vasilis.vlachou...@cern.ch> wrote: > Recently I've got a 4k laptop, and the first experience with linux and the > 4k display is quite painful. > I am still trying to tune it but for the moment my tkinter applications do > not render nicely on such a display. > - all widths like borderwidths, decorations, separators etc, set in pixels > do not scale with the dpi settings. Could we use "mm" for their settings > instead? > - checkbox, radiobox the indicator appears tiny wrt the text > > Is there a way to detect from tkinter a high res display and force a > window scaling x2 for everything? > What is your experience with such displays? > > Vasilis > ___ > Tkinter-discuss mailing list > Tkinter-discuss@python.org > https://mail.python.org/mailman/listinfo/tkinter-discuss > ___ Tkinter-discuss mailing list Tkinter-discuss@python.org https://mail.python.org/mailman/listinfo/tkinter-discuss
Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
Hi,
On Mon, 12 Jul 2021 20:31:57 +0100
E Paine wrote:
> > - all widths like borderwidths, decorations, separators etc, set in
> > pixels do not scale with the dpi settings. Could we use "mm" for their
> > settings instead?
>
> Definitely! The defaults in Tk use pixels, but you can use mm for
> lengths: tk.Label(root, text="foo", borderwidth="5mm", relief="groove")
>
> > - checkbox, radiobox the indicator appears tiny wrt the text
>
> This may be related to https://bugs.python.org/issue41969, in which case
> you're just waiting for your repos to update Tk.
Not sure, this seems to be a windows-specific thing. The OP was more
interested in ways to let Tk do the job by itself (at least that is what
I assumed :) .
>
> > Is there a way to detect from tkinter a high res display and force a
> > window scaling x2 for everything?
>
> IDLE has a `fix_scaling` method. Maybe you could use something similar?
> https://github.com/python/cpython/blob/da2e673c5/Lib/idlelib/run.py#L313
Looks like this will scale only font sizes. To scale "everything" you can
try to use the "tk scaling" command directly, like
root.tk.call('tk', 'scaling', chosen_dpi / 72.0)
(I thought that's what Vasilis already does).
Please note that this must be called early in the code, before any
widgets are created.
According to `man tk` this should scale everything that is measured in
"physical units" like mm, points or inches, but it won't scale e.g. a
borderwidth or a font size given in pixels. Obviously it won't scale
images either, which I guess is the problem with the check- and
radiobuttons; the indicators are probably just hard-coded images or
bitmaps.
Another problem with that fix_scaling() method might be that it relies on
the scaling factor already in use (I guess), which may be treacherous, at
least if you have a cheap monitor (like I do :) . These monitors often
report incorrect EDID data, which lead to an incorrect default dpi value
(in my case iirc with default settings everything appeared too small on
the screen, like a 100 mm line being displayed at 80 mm size or so; with
linux I had to manually override the dpi X11 uses to work around this;
I never bothered to check with windows, but I suppose that problem
still exists).
When using "tk scaling" you can add some configuration switch to let the
user decide which dpi value to use.
Best regards
Michael
.-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-.
Without followers, evil cannot spread.
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Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
> - all widths like borderwidths, decorations, separators etc, set in > pixels do not scale with the dpi settings. Could we use "mm" for their > settings instead? Definitely! The defaults in Tk use pixels, but you can use mm for lengths: tk.Label(root, text="foo", borderwidth="5mm", relief="groove") > - checkbox, radiobox the indicator appears tiny wrt the text This may be related to https://bugs.python.org/issue41969, in which case you're just waiting for your repos to update Tk. > Is there a way to detect from tkinter a high res display and force a > window scaling x2 for everything? IDLE has a `fix_scaling` method. Maybe you could use something similar? https://github.com/python/cpython/blob/da2e673c5/Lib/idlelib/run.py#L313 Hope this helped! ___ Tkinter-discuss mailing list Tkinter-discuss@python.org https://mail.python.org/mailman/listinfo/tkinter-discuss
Re: [Tkinter-discuss] 4k HiDPI displays and tkinter
Hi,
On Mon, 12 Jul 2021 17:13:18 +
Vasilis Vlachoudis wrote:
> Recently I've got a 4k laptop, and the first experience with linux and
> the 4k display is quite painful. I am still trying to tune it but for
> the moment my tkinter applications do not render nicely on such a
> display.
> - all widths like borderwidths, decorations, separators etc, set in
> pixels do not scale with the dpi settings. Could we use "mm" for their
> settings instead?
why not try it?
>>> from tkinter import *
>>> r=Tk()
>>> b=Button(r, bd='2m')
>>> b.pack()
looks like a 2 mm border here ;)
But then:
>>> b.configure(width='40m')
Traceback (most recent call last):
File "", line 1, in
File "/usr/lib/python3.7/tkinter/__init__.py", line 1485, in configure
return self._configure('configure', cnf, kw)
File "/usr/lib/python3.7/tkinter/__init__.py", line 1476, in _configure
self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
_tkinter.TclError: expected integer but got "40m"
>>> b.configure(bitmap='questhead')
>>> b.configure(width='40m')
>>> # this worked!
So, things might be a bit tricky :)
> - checkbox, radiobox the indicator appears tiny wrt the text
Agreed, these may be even more tricky.
>
> Is there a way to detect from tkinter a high res display and force a
> window scaling x2 for everything? What is your experience with such
> displays?
I don't have any experience with 4k displays, but had a similar problem
when I set up a little app I wanted to run on my 1080p TV. From 3 m
distance even with that display a highlight thickness of 1 pixel is hard
to detect for my old eyes.
I ended up with an option database that changed the defaults of font
size, highlightthickness etc. to values that seemed to me appropriate in
that context.
Detecting the resolution of the display in use should be easy enough,
just use winfo_screenwidth() ; the values for such an option database
could then easily be calculated depending on the screen size, so maybe
fiddling with the dpi is not necessary.
With ttk widgets things might be more difficult, though. Might be that
the best way in the end is to edit one of the existing ttk themes to fit
your needs and save it as themename_4k or so.
And the checkbutton/radiobutton indicators still will remain tiny (as
well as any other images may seem too small).
Best regards
Michael
.-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-.
There is a multi-legged creature crawling on your shoulder.
-- Spock, "A Taste of Armageddon", stardate 3193.9
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[Tkinter-discuss] 4k HiDPI displays and tkinter
Recently I've got a 4k laptop, and the first experience with linux and the 4k display is quite painful. I am still trying to tune it but for the moment my tkinter applications do not render nicely on such a display. - all widths like borderwidths, decorations, separators etc, set in pixels do not scale with the dpi settings. Could we use "mm" for their settings instead? - checkbox, radiobox the indicator appears tiny wrt the text Is there a way to detect from tkinter a high res display and force a window scaling x2 for everything? What is your experience with such displays? Vasilis ___ Tkinter-discuss mailing list Tkinter-discuss@python.org https://mail.python.org/mailman/listinfo/tkinter-discuss
