GNU bug report logs - #37667
27.0.50; Tab Bar display problems with more than 5 tabs

Previous Next

Full log

View this message in rfc822 format

From: Eli Zaretskii <eliz <at> gnu.org>
To: Juri Linkov <juri <at> linkov.net>
Cc: 37667 <at> debbugs.gnu.org
Subject: bug#37667: 27.0.50; Tab Bar display problems with more than 5 tabs
Date: Sat, 02 Nov 2019 21:28:44 +0200

> From: Juri Linkov <juri <at> linkov.net>
> Cc: 37667 <at> debbugs.gnu.org
> Date: Sat, 02 Nov 2019 21:06:05 +0200
> 
> >  . Always display both of them, but make one or both of them do
> >    nothing when scrolling in that direction makes no sense.
> 
> Or maybe to disable (visually using a grey shadow) the button
> that can't do scrolling?

Yes, possible.

> >  . Display one arrow on the left and another on the right, and decide
> >    whether or not to display the right one in display_mode_line,
> >    depending on whether you hit (last_visible_x - arrow_width) while
> >    producing glyphs.
> 
> Do you mean displaying the arrow on the right using fringe?

No, I meant displaying them like you do now, just move the right arrow
to the right of the last visible tab.

> > The first one sounds the easiest to me.
> 
> The first one is easy to implement, but it can't do auto-scrolling,
> i.e. when the current tab becomes invisible, automattically reduce
> the number of tabs in front of it to make it visible.

Is that such a serious problem?  Browsers don't auto-scroll.

> > If you want to implement the last one, then you need a function
> > that calls display_mode_line and returns a truncation indication
> > depending on the state of it.glyph_row->truncated_on_right_p.  The
> > simplest way to achieve that is to add a new argument to
> > display_mode_line, which, when non-NULL, will be a pointer to the flag
> > where to return to the caller the truncation indication; then make
> > display_mode_line set that flag according to the truncated_on_right_p
> > flag.
> 
> Modifying display_mode_line is one way.  I thought maybe simpler
> would be to copy some relevant code from display_mode_line
> to a new function.

I think you end up copying almost all of it.  But if I'm wrong, sure,
that's possible.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.