xulrunner rendering issues ?

[Denis Leroy]

Nicolas Mailhot wrote:
> The problem is not applications doing it wrong, and the Gnome
> appearance configuration doing it right, they all change things at the
> wrong level which explains why the changes are not shared, conflict,
> and are a PITA for users.
> 
> The right desktop level for DPI is xorg. All the apps need to be fixed
> to stop meddling with DPI values, use the Xorg DPI values directly
> (and fix xorg when it's getting it wrong, in your case vmware side).
> Unfortunately so far the reflex of every app writer was not to help
> xorg fix its code but workaround it locally in various conflicting and
> incompatible ways. What you are seing right now is the pile of dpi
> workarounds and bandaids crumbling on your system.

I think you summarized it pretty well. To be accurate, the VMWare 
problem is not DPI reporting (which is correct, as per xrdb -query), but 
the screen *size* reporting (in millimeters). The function 
get_dpi_from_x_server() in the control-center source code calls 
gdk_screen_get_width_mm() and  computes its own DPI value from the 
screen pixel and mm size, and get its wrong. As you said, it would 
cleaner if it queried the X server for the DPI size directly...