# From e45e286b3d639b90ef202996d87054cced1fd80e Mon Sep 17 00:00:00 2001
# From: tdu <tdukv@protonmail.com>
# Date: Mon, 31 Aug 2020 00:07:32 +0300
# Subject: [PATCH] Right clicking the layout symbol opens an xmenu prompt to
#  select layout.
#
# Xmenu need to be installed for this to work.
# Edit layoutmenu with the correct layout table, and place in PATH.
# ---
#  config.def.h  |  3 ++-
#  dwm.c         | 19 +++++++++++++++++++
#  layoutmenu    |  7 +++++++
#  3 files changed, 28 insertions(+), 1 deletion(-)
#  create mode 100755 layoutmenu

diff --git a/config.def.h b/config.def.h
index 1c0b587..c9e0833 100644
--- a/config.def.h
+++ b/config.def.h
@@ -58,6 +58,7 @@ static const Layout layouts[] = {
 static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
 static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
 static const char *termcmd[]  = { "st", NULL };
+static const char *layoutmenu_cmd = "layoutmenu";

 static Key keys[] = {
 	/* modifier                     key        function        argument */
@@ -101,7 +102,7 @@ static Key keys[] = {
 static Button buttons[] = {
 	/* click                event mask      button          function        argument */
 	{ ClkLtSymbol,          0,              Button1,        setlayout,      {0} },
-	{ ClkLtSymbol,          0,              Button3,        setlayout,      {.v = &layouts[2]} },
+	{ ClkLtSymbol,          0,              Button3,        layoutmenu,     {0} },
 	{ ClkWinTitle,          0,              Button2,        zoom,           {0} },
 	{ ClkStatusText,        0,              Button2,        spawn,          {.v = termcmd } },
 	{ ClkClientWin,         MODKEY,         Button1,        movemouse,      {0} },
diff --git a/dwm.c b/dwm.c
index 4465af1..2508a0a 100644
--- a/dwm.c
+++ b/dwm.c
@@ -177,6 +177,7 @@ static void grabkeys(void);
 static void incnmaster(const Arg *arg);
 static void keypress(XEvent *e);
 static void killclient(const Arg *arg);
+static void layoutmenu(const Arg *arg);
 static void manage(Window w, XWindowAttributes *wa);
 static void mappingnotify(XEvent *e);
 static void maprequest(XEvent *e);
@@ -1014,6 +1015,24 @@ killclient(const Arg *arg)
 	}
 }

+void
+layoutmenu(const Arg *arg) {
+	FILE *p;
+	char c[3], *s;
+	int i;
+
+	if (!(p = popen(layoutmenu_cmd, "r")))
+		 return;
+	s = fgets(c, sizeof(c), p);
+	pclose(p);
+
+	if (!s || *s == '\0' || c[0] == '\0')
+		 return;
+
+	i = atoi(c);
+	setlayout(&((Arg) { .v = &layouts[i] }));
+}
+
 void
 manage(Window w, XWindowAttributes *wa)
 {
diff --git a/layoutmenu b/layoutmenu
new file mode 100755
index 0000000..1bf95f2
--- /dev/null
+++ b/layoutmenu
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+cat <<EOF | xmenu
+[]= Tiled Layout	0
+><> Floating Layout	1
+[M] Monocle Layout	2
+EOF
--
2.28.0