add semi hide bars

config.def.h

@@ -8,6 +8,7 @@ static const unsigned int borderpx  = 4;
 static const unsigned int gappx     = 10;
 static const unsigned int snap      = 32;       /* snap pixel */
 static const int showbar            = 1;        /* 0 means no bar */
+static const int showextrabar       = 1;        /* 0 means no bar */
 static const int topbar             = 1;        /* 0 means bottom bar */
 static const char statussep         = ';';
 static const int horizpadbar        = 5;
@@ -103,7 +104,8 @@ static Key keys[] = {
 	{ 0,                            XF86XK_AudioMute,         spawn,          {.v = volmute } },
 	{ SUPERKEY,                     XK_p,                     spawn,          {.v = dmenucmd } },
 	{ SUPERKEY,                     XK_Return,                spawn,          {.v = termcmd } },
-	{ SUPERKEY,                     XK_b,                     togglebar,      {0} },
+	{ SUPERKEY,                     XK_b,                     togglebar,      {.i = 1} },
+	{ SUPERKEY|ShiftMask,           XK_b,                     togglebar,      {.i = 2} },
 	{ ALTKEY,                       XK_Tab,                   focusstack,     {.i = +1 } },
 /*	{ SUPERKEY,                     XK_k,                     focusstack,     {.i = -1 } }, */
 	{ SUPERKEY,                     XK_i,                     incnmaster,     {.i = +1 } },

config.h

@@ -7,7 +7,8 @@
 static const unsigned int borderpx  = 4;
 static const unsigned int gappx     = 10;
 static const unsigned int snap      = 32;       /* snap pixel */
-static const int showbar            = 1;        /* 0 means no bar */
+static const int showbar            = 0;        /* 0 means no bar */
+static const int showextrabar       = 1;        /* 0 means no bar */
 static const int topbar             = 1;        /* 0 means bottom bar */
 static const char statussep         = ';';
 static const int horizpadbar        = 5;
@@ -103,7 +104,8 @@ static Key keys[] = {
 	{ 0,                            XF86XK_AudioMute,         spawn,          {.v = volmute } },
 	{ SUPERKEY,                     XK_p,                     spawn,          {.v = dmenucmd } },
 	{ SUPERKEY,                     XK_Return,                spawn,          {.v = termcmd } },
-	{ SUPERKEY,                     XK_b,                     togglebar,      {0} },
+	{ SUPERKEY,                     XK_b,                     togglebar,      {.i = 1} },
+	{ SUPERKEY|ShiftMask,           XK_b,                     togglebar,      {.i = 2} },
 	{ ALTKEY,                       XK_Tab,                   focusstack,     {.i = +1 } },
 /*	{ SUPERKEY,                     XK_k,                     focusstack,     {.i = -1 } }, */
 	{ SUPERKEY,                     XK_i,                     incnmaster,     {.i = +1 } },

dwm.c

@@ -125,6 +125,7 @@ struct Monitor {
 	unsigned int sellt;
 	unsigned int tagset[2];
 	int showbar;
+	int showextrabar;
 	int topbar;
 	Client *clients;
 	Client *sel;
@@ -676,6 +677,7 @@ createmon(void)
 	m->mfact = mfact;
 	m->nmaster = nmaster;
    	m->showbar = showbar;
+	m->showextrabar = showextrabar;
 	m->topbar = topbar;
     m->gappx = gappx;
 	m->lt[0] = &layouts[0];
@@ -857,13 +859,12 @@ drawbar(Monitor *m)
 	unsigned int i, occ = 0, urg = 0;
 	Client *c;
 
-	if (!m->showbar)
+    if (m->showbar) {
-		return;
-
        	/* draw status first so it can be overdrawn by tags later */
         if (m == selmon) { /* status is only drawn on selected monitor */
    	        tw = m->ww - drawstatusbar(m, bh, 0, stext);
         }
+    }
 
 	for (c = m->clients; c; c = c->next) {
 		occ |= c->tags;
@@ -902,14 +903,18 @@ drawbar(Monitor *m)
 		drw_rect(drw, x, 0, w - 2 * hpb, bh, 1, 1);
 	}
 
+    if (m->showbar)
        	drw_map(drw, m->barwin, 0, 0, m->ww, bh);
 
+    if (m->showextrabar) {
         if (m == selmon) { /* extra status is only drawn on selected monitor */
 	    	sw = drawstatusbar(m, bh, 1, estext);
 		    drw_map(drw, m->extrabarwin, 0, 0, m->ww, bh);
 	    }
     }
 
+}
+
 void
 drawbars(void)
 {
@@ -1670,10 +1675,11 @@ setfullscreen(Client *c, int fullscreen)
 void
 setgaps(const Arg *arg)
 {
-	if ((arg->i == 0) || (selmon->gappx + arg->i < 0))
+	if ((arg->i == 0) || (selmon->gappx + arg->i < 0)) {
 		selmon->gappx = 0;
-	else
+    } else {
 		selmon->gappx += arg->i;
+    }
 	arrange(selmon);
 }
 
@@ -1881,10 +1887,17 @@ tile(Monitor *m)
 void
 togglebar(const Arg *arg)
 {
+    if (arg->i == 1 || arg->i == 0) {
        	selmon->showbar = !selmon->showbar;
        	updatebarpos(selmon);
     	XMoveResizeWindow(dpy, selmon->barwin,      selmon->wx + hpb, selmon->by + vpb,  selmon->ww - 2 * hpb, bh);
+    }
+    if (arg->i == 2 || arg->i == 0) {
+       	selmon->showextrabar = !selmon->showextrabar;
+       	updatebarpos(selmon);
         XMoveResizeWindow(dpy, selmon->extrabarwin, selmon->wx + hpb, selmon->eby - vpb, selmon->ww - 2 * hpb, bh);
+    }
+
 	arrange(selmon);
 }
 
@@ -2049,14 +2062,19 @@ updatebarpos(Monitor *m)
 {
 	m->wy = m->my;
 	m->wh = m->mh;
-    m->wh -= bh * m->showbar * 2;
+    m->wh -= bh * m->showbar + bh * m->showextrabar;
    	m->wy = m->showbar ? m->wy + bh + vpb : m->wy;
 
-	if (m->showbar) {
+	if (m->showbar && m->showextrabar) {
 		m->by  = m->topbar ? m->wy - gappx - bh : m->wy + m->wh + gappx;
     	m->eby = m->topbar ? m->wy + m->wh + gappx - vpb * 2 : m->wy - gappx - bh - vpb * 2;
         m->wy = topbar ? m->wy : m->wy - vpb * 2;
         m->wh = topbar ? m->wh - vpb * 2 : m->wh + vpb * 2;
+	} else if (m->showbar || m->showextrabar) {
+		m->by  = m->topbar ? m->wy - gappx - bh : m->wy + m->wh + gappx;
+    	m->eby = m->topbar ? m->wy + m->wh + gappx - vpb : m->wy - gappx - bh - vpb;
+        m->wy = topbar ? m->wy : m->wy - vpb;
+        m->wh = topbar ? m->wh - vpb: m->wh + vpb;
 	} else {
 		m->by  = -bh - vpb;
 		m->eby = -bh + vpb;