M config.def.h → config.def.h

@@ -71,10 +71,10 @@ { MODKEY,                       XK_space,  setlayout,      {0} },
 	{ MODKEY|ShiftMask,             XK_space,  togglefloating, {0} },
 	{ MODKEY,                       XK_0,      view,           {.ui = ~0 } },
 	{ MODKEY|ShiftMask,             XK_0,      tag,            {.ui = ~0 } },
-	{ MODKEY,                       XK_w,      focusmon,       {.ui = 0 } },
-	{ MODKEY,                       XK_e,      focusmon,       {.ui = 1 } },
-	{ MODKEY|ShiftMask,             XK_w,      tagmon,         {.ui = 0 } },
-	{ MODKEY|ShiftMask,             XK_e,      tagmon,         {.ui = 1 } },
+	{ MODKEY,                       XK_comma,  focusmon,       {.i = -1 } },
+	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
+	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
+	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
 	TAGKEYS(                        XK_1,                      0)
 	TAGKEYS(                        XK_2,                      1)
 	TAGKEYS(                        XK_3,                      2)

M dwm.1 → dwm.1

@@ -19,14 +19,14 @@ .P
 Windows are grouped by tags. Each window can be tagged with one or multiple
 tags. Selecting certain tags displays all windows with these tags.
 .P
-dwm contains a small status bar which displays all available tags, the layout,
+Each screen contains a small status bar which displays all available tags, the layout,
 the title of the focused window, and the text read from the root window name
-property. A floating window is indicated with an empty square and a maximised
-floating window is indicated with a filled square before the windows title.
-The selected tags are indicated with a different color. The tags of the focused
-window are indicated with a filled square in the top left corner.  The tags
-which are applied to one or more windows are indicated with an empty square in
-the top left corner.
+property, if the screen is focused. A floating window is indicated with an
+empty square and a maximised floating window is indicated with a filled square
+before the windows title.  The selected tags are indicated with a different
+color. The tags of the focused window are indicated with a filled square in the
+top left corner.  The tags which are applied to one or more windows are
+indicated with an empty square in the top left corner.
 .P
 dwm draws a small border around windows to indicate the focus state.
 .SH OPTIONS
@@ -56,6 +56,18 @@ .TP
 .B Mod1\-Shift\-Return
 Start
 .BR xterm.
+.TP
+.B Mod1\-,
+Focus previous screen, if any.
+.TP
+.B Mod1\-.
+Focus next screen, if any.
+.TP
+.B Mod1\-Shift\-,
+Send focused window to previous screen, if any.
+.TP
+.B Mod1\-Shift\-,
+Send focused window to next screen, if any.
 .TP
 .B Mod1\-b
 Toggles bar on and off.

M dwm.c → dwm.c

@@ -11,9 +11,9 @@ * whenever a new event has been fetched. This allows event dispatching
  * in O(1) time.
  *
  * Each child of the root window is called a client, except windows which have
- * set the override_redirect flag.  Clients are organized in a global
- * linked client list, the focus history is remembered through a global
- * stack list. Each client contains a bit array to indicate the tags of a
+ * set the override_redirect flag.  Clients are organized in a linked client
+ * list on each monitor, the focus history is remembered through a stack list
+ * on each monitor. Each client contains a bit array to indicate the tags of a
  * client.
  *
  * Keys and tagging rules are organized as arrays and defined in config.h.
@@ -164,6 +164,7 @@ static void destroynotify(XEvent *e);
 static void detach(Client *c);
 static void detachstack(Client *c);
 static void die(const char *errstr, ...);
+static Monitor *dirtomon(int dir);
 static void drawbar(Monitor *m);
 static void drawbars(void);
 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
@@ -180,7 +181,6 @@ static long getstate(Window w);
 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
 static void grabbuttons(Client *c, Bool focused);
 static void grabkeys(void);
-static Monitor *idxtomon(unsigned int n);
 static void initfont(const char *fontstr);
 static Bool isprotodel(Client *c);
 static void keypress(XEvent *e);
@@ -621,6 +621,22 @@ va_end(ap);
 	exit(EXIT_FAILURE);
 }
 
+Monitor *
+dirtomon(int dir) {
+	Monitor *m = NULL;
+
+	if(dir > 0)
+		if(!(m = selmon->next))
+			m = mons;
+	else {
+		if(selmon == mons)
+			for(m = mons; m->next; m = m->next);
+		else
+			for(m = mons; m->next != selmon; m = m->next);
+	}
+	return m;
+}
+
 void
 drawbar(Monitor *m) {
 	int x;
@@ -797,10 +813,11 @@ }
 
 void
 focusmon(const Arg *arg) {
-	Monitor *m;
+	Monitor *m = NULL;
 
-	if(!(m = idxtomon(arg->ui)) || m == selmon)
+	if(!mons->next)
 		return;
+	m = dirtomon(arg->i);
 	unfocus(selmon->sel);
 	selmon = m;
 	focus(NULL);
@@ -932,15 +949,6 @@ XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
 						 True, GrabModeAsync, GrabModeAsync);
 		}
 	}
-}
-
-Monitor *
-idxtomon(unsigned int n) {
-	unsigned int i;
-	Monitor *m;
-
-	for(m = mons, i = 0; m && i != n; m = m->next, i++);
-	return m;
 }
 
 void
@@ -1512,11 +1520,9 @@ }
 
 void
 tagmon(const Arg *arg) {
-	Monitor *m;
-
-	if(!selmon->sel || !(m = idxtomon(arg->ui)))
-		return;
-	sendmon(selmon->sel, m);
+	if(!selmon->sel || !mons->next)
+		return
+	sendmon(selmon->sel, dirtomon(arg->i));
 }
 
 int