GNU bug report logs - #22549
25.0.50; Tooltips placed outside of screen limits

Previous Next

Full log

Message #14 received at 22549 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Óscar Fuentes <ofv <at> wanadoo.es>
Cc: rudalics <at> gmx.at, 22549 <at> debbugs.gnu.org
Subject: Re: bug#22549: 25.0.50; Tooltips placed outside of screen limits
Date: Thu, 04 Feb 2016 18:43:21 +0200

> From: Óscar Fuentes <ofv <at> wanadoo.es>
> Date: Thu, 04 Feb 2016 17:20:47 +0100
> Cc: 22549 <at> debbugs.gnu.org
> 
> >> The MS Windows port places the tooltips taking into account the screen
> >> edges.
> >
> > So does the Lucid port.  Something else must be at work here.
> 
> I think I know what is happening.
> 
> I have two monitors, side by side, simulating a continuous display. The
> monitor on the left side, where Emacs is displayed, has a vertical
> resolution of 1050 pixels while the monitor on the right side has a
> vertical resolution of 1200 points. Emacs is using the vertical
> resolution of the virtual display (the largest of the two monitors, i.e.
> 1200 points) instead of the resolution of the monitor that hosts the
> Emacs frame.
> 
> Something similar happens for the horizontal overflow: the dimensions of
> the virtual desktop are used instead of the dimensions of the monitor.

I arrived at the same conclusion by looking at the X code: the APIs
called by x_display_pixel_height and x_display_pixel_width return
information about the entire virtual screen, not about the current
monitor.  We need to use different APIs in the case of tooltip
positioning.

Previous Next

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