apply hide vacant tags patch

dwm.c

@@ -64,7 +64,7 @@ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
 enum { SchemeNorm, SchemeSel, SchemeTabActive, SchemeTabInactive }; /* color schemes */
 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
        NetWMFullscreen, NetActiveWindow, NetWMWindowType,
-       NetWMWindowTypeDialog, NetClientList, NetClientInfo, NetLast }; /* EWMH atoms */
+       NetWMWindowTypeDialog, NetClientList, NetClientListStacking, NetClientInfo, NetLast }; /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
@@ -603,9 +603,15 @@ buttonpress(XEvent *e)
 	}
 	if (ev->window == selmon->barwin) {
 		i = x = 0;
-		do
+		unsigned int occ = 0;
+		for(c = m->cl->clients; c; c=c->next)
+			occ |= c->tags == TAGMASK ? 0 : c->tags;
+		do {
+			/* Do not reserve space for vacant tags */
+			if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+				continue;
 			x += TEXTW(tags[i]);
-		while (ev->x >= x && ++i < LENGTH(tags));
+		} while (ev->x >= x && ++i < LENGTH(tags));
 		if (i < LENGTH(tags)) {
 			click = ClkTagBar;
 			arg.ui = 1 << i;
@@ -921,19 +927,18 @@ drawbar(Monitor *m)
 	}
 
 	for (c = m->cl->clients; c; c = c->next) {
-		occ |= c->tags;
+		occ |= c->tags == TAGMASK ? 0 : c->tags;
 		if (c->isurgent)
 			urg |= c->tags;
 	}
 	x = 0;
 	for (i = 0; i < LENGTH(tags); i++) {
+		/* Do not draw vacant tags */
+		if(!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+			continue;
 		w = TEXTW(tags[i]);
 		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
 		drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
-		if (occ & 1 << i)
-			drw_rect(drw, x + boxs, boxs, boxw, boxw,
-				m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
-				urg & 1 << i);
 		x += w;
 	}
 	w = TEXTW(m->ltsymbol);
@@ -1302,6 +1307,8 @@ manage(Window w, XWindowAttributes *wa)
 	attachstack(c);
 	XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
 		(unsigned char *) &(c->win), 1);
+	XChangeProperty(dpy, root, netatom[NetClientListStacking], XA_WINDOW, 32, PropModePrepend,
+		(unsigned char *) &(c->win), 1);
 	XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
 	setclientstate(c, NormalState);
 	if (c->mon == selmon)
@@ -1882,6 +1889,7 @@ setup(void)
 	netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
 	netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
 	netatom[NetClientInfo] = XInternAtom(dpy, "_NET_CLIENT_INFO", False);
+	netatom[NetClientListStacking] = XInternAtom(dpy, "_NET_CLIENT_LIST_STACKING", False);
 	/* init cursors */
 	cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
 	cursor[CurResize] = drw_cur_create(drw, XC_sizing);
@@ -1906,6 +1914,7 @@ setup(void)
 		PropModeReplace, (unsigned char *) netatom, NetLast);
 	XDeleteProperty(dpy, root, netatom[NetClientList]);
 	XDeleteProperty(dpy, root, netatom[NetClientInfo]);
+	XDeleteProperty(dpy, root, netatom[NetClientListStacking]);
 	/* select events */
 	wa.cursor = cursor[CurNormal]->cursor;
 	wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
@@ -2223,6 +2232,13 @@ updateclientlist()
 			XChangeProperty(dpy, root, netatom[NetClientList],
 				XA_WINDOW, 32, PropModeAppend,
 				(unsigned char *) &(c->win), 1);
+
+	XDeleteProperty(dpy, root, netatom[NetClientListStacking]);
+	for (m = mons; m; m = m->next)
+		for (c = m->stack; c; c = c->snext)
+			XChangeProperty(dpy, root, netatom[NetClientListStacking],
+				XA_WINDOW, 32, PropModeAppend,
+				(unsigned char *) &(c->win), 1);
 }
 
 int