Implement support for EWMH's _NET_WM_STATE_FULLSCREEN hint.

Since we already have a form of 'maximize', we need to differentiate
between 'maximize' and the new 'fullscreen' mode.  The 'maximize' mode
will continue to honor gap but now *retains* the border, matching the
'vert/horz maximize' behaviour.  The new 'fullscreen' mode supports and
follows the _NET_WM_STATE_FULLSCREEN hint, allowing the client perform
additional window modifications; in this mode, cwm(1) will *ignore* gap,
remove borders and freeze(move/resize) the client.  Additionally,
'fullscreen' mode will remember various combinations of previous states.

* default keybinding changes: CM-f 'fullscreen', CM-m 'maximize' (re-map
  as desired).

Positive feedback from a few, testing and ok sthen@

1 files changed, 6 insertions, 0 deletions

diff --git a/kbfunc.c b/kbfunc.c
index 351366e..69c05fc 100644
--- a/kbfunc.c
+++ b/kbfunc.c
@@ -448,6 +448,12 @@ kbfunc_client_movetogroup(struct client_ctx *cc, union arg *arg)
 }
 
 void
+kbfunc_client_fullscreen(struct client_ctx *cc, union arg *arg)
+{
+	client_fullscreen(cc);
+}
+
+void
 kbfunc_client_maximize(struct client_ctx *cc, union arg *arg)
 {
 	client_maximize(cc);