Make layout fancier by adding master_grow, master_shrink, master_add,

master_del, stack_inc and stack_del to the format string.

scrotwm.1

@@ -122,14 +122,30 @@ This ratio is the screen size to what they will be resized.
 For example, 0.6 is 60% of the physical screen size.
 .It Cm layout
 select layout to use at start-of-day.
-Defined in the format ws[<idx>]:<layout>, e.g. ws[2]:horizontal sets worskspace
+Defined in the format ws[idx]:master_grow:master_add:stack_inc:layout, e.g.
-2 to the horizontal stack mode.
+ws[2]:-4:0:1:horizontal sets worskspace 2 to the horizontal stack mode and
-This setting is not retained at restart.
+shrinks the master area by 4 ticks and adds one window to the stack.
-Possible values are
+Possible layout values are
 .Pa vertical ,
 .Pa horizontal
 and
 .Pa fullscreen .
+.Pp
+See
+.Pa master_grow ,
+.Pa master_shrink ,
+.Pa master_add ,
+.Pa master_del ,
+.Pa stack_inc ,
+and
+.Pa stack_del
+for more information.
+Note that the stacking options are complicated and have side-effects.
+One should familiarize oneself with these commands before experimenting with the
+.Pa layout
+option.
+.Pp
+This setting is not retained at restart.
 .It Cm region
 Allocates a custom region, removing any autodetected regions which occupy the same
 space on the screen.

scrotwm.c

@@ -4589,7 +4589,7 @@ setautorun(char *selector, char *value, int flags)
 int
 setlayout(char *selector, char *value, int flags)
 {
-	int			ws_id, st, i;
+	int			ws_id, st, i, x, mg, ma, si;
 	char			s[1024];
 	struct workspace	*ws;
 
@@ -4597,7 +4597,8 @@ setlayout(char *selector, char *value, int flags)
 		return (0);
 
 	bzero(s, sizeof s);
-	if (sscanf(value, "ws[%d]:%1023c", &ws_id, s) != 2)
+	if (sscanf(value, "ws[%d]:%d:%d:%d:%1023c",
+	    &ws_id, &mg, &ma, &si, s) != 5)
 		errx(1, "invalid layout entry, should be 'ws[<idx>]:<type>'\n");
 	ws_id--;
 	if (ws_id < 0 || ws_id >= SWM_WS_MAX)
@@ -4615,6 +4616,30 @@ setlayout(char *selector, char *value, int flags)
 	for (i = 0; i < ScreenCount(display); i++) {
 		ws = (struct workspace *)&screens[i].ws;
 		ws[ws_id].cur_layout = &layouts[st];
+		if (st == SWM_MAX_STACK)
+			continue;
+
+		/* master grow */
+		for (x = 0; x < abs(mg); x++) {
+			ws[ws_id].cur_layout->l_config(&ws[ws_id],
+			    mg >= 0 ?  SWM_ARG_ID_MASTERGROW :
+			    SWM_ARG_ID_MASTERSHRINK);
+			stack();
+		}
+		/* master add */
+		for (x = 0; x < abs(ma); x++) {
+			ws[ws_id].cur_layout->l_config(&ws[ws_id],
+			    ma >= 0 ?  SWM_ARG_ID_MASTERADD :
+			    SWM_ARG_ID_MASTERDEL);
+			stack();
+		}
+		/* stack inc */
+		for (x = 0; x < abs(si); x++) {
+			ws[ws_id].cur_layout->l_config(&ws[ws_id],
+			    si >= 0 ?  SWM_ARG_ID_STACKINC :
+			    SWM_ARG_ID_STACKDEC);
+			stack();
+		}
 	}
 
 	return (0);

scrotwm.conf

@@ -46,9 +46,9 @@ dialog_ratio		= 0.6
 # autorun		= ws[2]:xxxterm http://www.openbsd.org
 
 # workspace layout
-# layout		= ws[1]:vertical
+# layout		= ws[1]:4:0:0:vertical
-# layout		= ws[2]:horizontal
+# layout		= ws[2]:0:0:0:horizontal
-# layout		= ws[3]:fullscreen
+# layout		= ws[3]:0:0:0:fullscreen
 
 # mod key, (windows key is Mod4) (apple key on OSX is Mod2)
 # modkey = Mod1