patch: autobar

dwm will automatically hide the monitor's statusbar when only 1 tag is
being utilized (viewing an empty tag counts as 'utilization').

The hotkey for controlling visibility manually is removed, and all
monitors default to statusbar hidden at startup (since no clients would
be active).

1 files changed, 16 insertions, 11 deletions

diff --git a/dwm.c b/dwm.c
index 7ca234b..672a4e2 100644
--- a/dwm.c
+++ b/dwm.c
@@ -211,7 +211,6 @@ static void spawn(const Arg *arg);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
 static void tile(Monitor *m);
-static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
 static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
@@ -390,6 +389,21 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
 void
 arrange(Monitor *m)
 {
+    unsigned int occ;
+    Client *c;
+
+    if (m)
+    {
+        occ = m->tagset[m->seltags];
+
+        for (c = m->clients; c; c = c->next)
+            occ |= c->tags;
+
+        selmon->showbar = __builtin_popcount(occ & TAGMASK) > 1;
+        updatebarpos(selmon);
+        XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+    }
+
 	if (m)
 		showhide(m->stack);
 	else for (m = mons; m; m = m->next)
@@ -647,7 +661,7 @@ createmon(void)
 	m->tagset[0] = m->tagset[1] = 1;
 	m->mfact = mfact;
 	m->nmaster = nmaster;
-	m->showbar = showbar;
+	m->showbar = 0;
 	m->topbar = topbar;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
@@ -1722,15 +1736,6 @@ tile(Monitor *m)
 }
 
 void
-togglebar(const Arg *arg)
-{
-	selmon->showbar = !selmon->showbar;
-	updatebarpos(selmon);
-	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
-	arrange(selmon);
-}
-
-void
 togglefloating(const Arg *arg)
 {
 	if (!selmon->sel)