[PATCH] xdg-shell: update shsurf->output when maximizing

Marek Chalupa mchqwerty at gmail.com
Mon Sep 8 23:15:42 PDT 2014


On 8 September 2014 20:08, Bill Spitzak <spitzak at gmail.com> wrote:

> I'm probably being stupid, but I still can't figure out how it chooses the
> output for a NON-maximized surface. I would think that should use exactly
> the same algorithm as maximized does here?
Each surface has assigned output it is currently mapped on (so it can be
NULL). This surface->output is set by weston_surface_assign_output which is
called by weston_view_assign_output (and that by
weston_surface_update_transform) or by surface_unmap. Atm,
weston_surface_assign_output assigns the output on which the surface covers
the biggest area + it sets a  bitfield with all the outputs the surface is
(at least partially) mapped on. This setting is done by Weston core (in

I don't think it should use the same algorithm, because then we can just
use surface->output instead of shsurf->output, right? If I understand it
correctly, the shsurf->output should be kind of 'chosen' by user (like in
xdg_surface_set_fullscreen request or so) - it is just the output the user
expects the surface is on.

> On 09/08/2014 03:34 AM, Marek Chalupa wrote:
>> shsurf->output is the output that user expects the shell surface
>> is on. When maximizing, we don't have any explicit setting of the output
>> like in the case of fullscreening, so set the output to the one that
>> the surface is currently on. In the case that the surface is not mapped
>> yet,
>> (if it ever happens) use the same heuristics as for fullscreening.
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