gtk narrow scrollbars (no trough)

gtk narrow scrollbars (no trough)

[Scott Jaderholm]

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Is there a way to change the width of gtk scrollbars in Emacs? Or better
yet, have them respect the .gtkrc?

I've changed the slider-width and trough-border in .gtkrc which makes my
scrollbars narrower in everything but Emacs. It appears that regardless of
.gtkrc the scrollbars are the same width, and though it will make the slider
narrow, it will still use the extra space as trough, even if you set that to
0 in gtkrc.

Scott

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Re: gtk narrow scrollbars (no trough)

[Jan D.]

Scott Jaderholm skrev 2011-10-27 06:06:
> Is there a way to change the width of gtk scrollbars in Emacs? Or better
> yet, have them respect the .gtkrc?
>
> I've changed the slider-width and trough-border in .gtkrc which makes my
> scrollbars narrower in everything but Emacs. It appears that regardless
> of .gtkrc the scrollbars are the same width, and though it will make the
> slider narrow, it will still use the extra space as trough, even if you
> set that to 0 in gtkrc.

Hello.

Can you give a screenshot?  I think scrollbar width must be the same 
width as character width.  This simplifies things when you have two 
windows next to each other and a scroll bar between them.

	Jan D.

Re: gtk narrow scrollbars (no trough)

[Chong Yidong]

"Jan D." <jan.h.d@swipnet.se> writes:

> Can you give a screenshot?  I think scrollbar width must be the same
> width as character width.  This simplifies things when you have two
> windows next to each other and a scroll bar between them.

You should be able to see the issue with

 (set-frame-parameter nil 'scroll-bar-width 100)
 (set-frame-parameter nil 'scroll-bar-width 10)

Emacs 23 appears to have the same problem.

Re: gtk narrow scrollbars (no trough)

[Jan Djärv]

Hi.

28 okt 2011 kl. 17:22 skrev Chong Yidong:

> "Jan D." <jan.h.d@swipnet.se> writes:
> 
>> Can you give a screenshot?  I think scrollbar width must be the same
>> width as character width.  This simplifies things when you have two
>> windows next to each other and a scroll bar between them.
> 
> You should be able to see the issue with
> 
> (set-frame-parameter nil 'scroll-bar-width 100)
> (set-frame-parameter nil 'scroll-bar-width 10)
> 
> Emacs 23 appears to have the same problem.


This is not the same thing as what the OP said.  He changed the theme values, the above only change the Emacs values.
Most theme scroll bars can not be resized.  So Emacs always use the theme values for the scroll bars.  So if the theme values changes, Emacs should use them.

But the OP didn't say which Gtk+ version, which theme and which Emacs version he was using.
This was updated when bug#8505 was fixed.

	Jan D.

Re: gtk narrow scrollbars (no trough)

[Scott Jaderholm]

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On Sun, Oct 30, 2011 at 4:43 PM, Jan Djärv <jan.h.d@swipnet.se> wrote:

> Hi.
>
> 28 okt 2011 kl. 17:22 skrev Chong Yidong:
>
> > "Jan D." <jan.h.d@swipnet.se> writes:
> >
> >> Can you give a screenshot?  I think scrollbar width must be the same
> >> width as character width.  This simplifies things when you have two
> >> windows next to each other and a scroll bar between them.
> >
> > You should be able to see the issue with
> >
> > (set-frame-parameter nil 'scroll-bar-width 100)
> > (set-frame-parameter nil 'scroll-bar-width 10)
> >
> > Emacs 23 appears to have the same problem.
>
>
> Thanks Jan for following up on these even after I failed to provide a
screenshot.


>  This is not the same thing as what the OP said.  He changed the theme
> values, the above only change the Emacs values.
> Most theme scroll bars can not be resized.  So Emacs always use the theme
> values for the scroll bars.  So if the theme values changes, Emacs should
> use them.
>
> But the OP didn't say which Gtk+ version, which theme and which Emacs
> version he was using.
>

 GNU Emacs 24.0.90.1 (x86_64-pc-linux-gnu, GTK+ Version 2.20.1) of
2011-11-03 on lychee, modified by Debian

Gtk theme is Murrine Brave Dark.

I modified these lines in gtkrc

    GtkRange       ::slider-width        = 10 # Scrollbar width.
    GtkRange       ::stepper-size        = 0 # Stepper height.

This is what the scrollbars look like in most other apps:

http://jaderholm.com/tmp/2011-11-04-scroll1.png

(though Gedit and Gvim both display them wrong)

This is what they look like in Emacs by default:

http://jaderholm.com/tmp/2011-11-04-scroll2.png

Note that the slider is the right width, it's just the trough that is wrong.

If I use (add-to-list 'default-frame-alist '(scroll-bar-width . 10)) then
they look correct:

http://jaderholm.com/tmp/2011-11-04-scroll3.png

I've seen this in other themes that I haven't modified myself.

Scott

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Re: gtk narrow scrollbars (no trough)

[Jan Djärv]

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4 nov 2011 kl. 23:47 skrev Scott Jaderholm:

> 
> 
>  GNU Emacs 24.0.90.1 (x86_64-pc-linux-gnu, GTK+ Version 2.20.1) of 2011-11-03 on lychee, modified by Debian
> 
> Gtk theme is Murrine Brave Dark.
> 
> I modified these lines in gtkrc
> 
>     GtkRange       ::slider-width        = 10 # Scrollbar width.
>     GtkRange       ::stepper-size        = 0 # Stepper height.
> 
> This is what the scrollbars look like in most other apps:
> 
> http://jaderholm.com/tmp/2011-11-04-scroll1.png
> 
> (though Gedit and Gvim both display them wrong)
> 
> This is what they look like in Emacs by default:
> 
> http://jaderholm.com/tmp/2011-11-04-scroll2.png
> 
> Note that the slider is the right width, it's just the trough that is wrong.
> 
> If I use (add-to-list 'default-frame-alist '(scroll-bar-width . 10)) then they look correct:
> 
> http://jaderholm.com/tmp/2011-11-04-scroll3.png
> 
> I've seen this in other themes that I haven't modified myself.
> 

When I modify Murrine Brave Dark as described above, I do get smaller scroll bars in Emacs.  The scroll bars in gnome-terminal and Emacs look exactly the same.  But this also depends on font size.  Emacs pads the scroll bar to a multiple of the font size.  That is because if you do a C-x 3 there is nothing to take up the slack if the scroll bar is different from the character width.

I don't think there is a bug here. This is a known limitation in Emacs, and so far there has been no work into remove it.

	Jan D.


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