fix for a regression is found; this bug has been around for a long time
it seems, but this change exposed it. Likely need to track clients in to
and out of regions.
region_find() which no longer needs to recalculate gap each time
a client (or menu) is created or altered. If no RandR, fall back
to display dimensions while building regions instead of during
execution.
new window manager; so allow CWM_EXEC_WM to assign new wm to wm_argv and
pass through cwm_status (now EXECWM) so that x_teardown() gets called
before exec'ing the new window manager. Removes the need for a separate
x_restart() now, using new wm_argv; and consolidates errno for execvp.
this check to decide if a group is virtually empty. Rationale: if a
group contains *only* 'sticky' clients, it should be skipped while
cycling through groups. Apply similar logic to the group menu.
Based on an idea from phessler@, who also tested another version.
global Clientq and place it inside screen_ctx since every client belongs
to a screen, then use the same per screen clientq to track stacking
order (the sole reason for mruq).
to having to manage an array outside in screen_ctx for group names and
shortcuts. Simplifies (and moves bits for) reading, and constructing
data for, EWMH's _NET_DESKTOP_NAMES.
client to 'stick' to all desktops (ewmh speak) or groups - this
currently has the same affect as setting a client's group to 'nogroup',
with the exception that the client can also be in a group, so when
un-sticking, the client will go back to its original group/desktop.
group_show() and group_hide() are not the only ways a group can change
state - if all clients in a group are either hidden or unhidden, then
that group's state should change, as well as the various EWMH ways.
Instead of trying to keep track in a wide variety of places, simply
query the clients in a group before needing to take action based on the
group's state. Solves long standing confusion of when a group is hidden
or not.
since nhidden wasn't incremented nor decremeted in all the right places,
thus confusing matters. We don't need to carry a count around, so just
use a local variable in the one place we need one to supply
XRestackWindows().
