From 597a5546cdb9ca912fa634776b3e873a80ccc277 Mon Sep 17 00:00:00 2001
From: Malfurious <m@lfurio.us>
Date: Thu, 27 Jan 2022 03:46:21 -0500
Subject: patch: columns

This patch adds an extra layout to dwm called col in which the windows
in the master area are arranged in colums of equal size. The number of
columns is always nmaster + 1, and the last column is a stack of
leftover windows just like the normal tile layout. It effectively acts
like the default tiling mode, except provides for vertical instead of
horizontal master windows.
---
 config.def.h |  2 ++
 dwm.c        | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/config.def.h b/config.def.h
index 65b674f..c713ec1 100644
--- a/config.def.h
+++ b/config.def.h
@@ -46,6 +46,7 @@ static const Layout layouts[] = {
 	{ "><>",      NULL },    /* no layout function means floating behavior */
 	{ "[M]",      monocle },
 	{ "|M|",      centeredmaster },
+	{ "||=",      col },
 };
 
 /* key definitions */
@@ -94,6 +95,7 @@ static const Key keys[] = {
 	{ MODKEY,                       XK_f,      setlayout,      {.v = &layouts[1]} },
 	{ MODKEY,                       XK_m,      setlayout,      {.v = &layouts[2]} },
 	{ MODKEY,                       XK_u,      setlayout,      {.v = &layouts[3]} },
+	{ MODKEY,                       XK_o,      setlayout,      {.v = &layouts[4]} },
 	{ MODKEY,                       XK_comma,  focusmon,       {.i = -1 } },
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
diff --git a/dwm.c b/dwm.c
index ec9a8f9..6253c39 100644
--- a/dwm.c
+++ b/dwm.c
@@ -156,6 +156,7 @@ static void checkotherwm(void);
 static void cleanup(void);
 static void cleanupmon(Monitor *mon);
 static void clientmessage(XEvent *e);
+static void col(Monitor *);
 static void configure(Client *c);
 static void configurenotify(XEvent *e);
 static void configurerequest(XEvent *e);
@@ -1762,6 +1763,32 @@ tagmon(const Arg *arg)
 	sendmon(selmon->sel, dirtomon(arg->i));
 }
 
+void
+col(Monitor *m)
+{
+	unsigned int i, n, h, w, x, y, mw;
+	Client *c;
+
+	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+	if (n == 0)
+		return;
+
+	if (n > m->nmaster)
+		mw = m->nmaster ? m->ww * m->mfact : 0;
+	else
+		mw = m->ww;
+	for (i = x = y = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+		if (i < m->nmaster) {
+			w = (mw - x) / (MIN(n, m->nmaster) - i);
+			resize(c, x + m->wx, m->wy, w - (2 * c->bw), m->wh - (2 * c->bw), 0);
+			x += WIDTH(c);
+		} else {
+			h = (m->wh - y) / (n - i);
+			resize(c, x + m->wx, m->wy + y, m->ww - x - (2 * c->bw), h - (2 * c->bw), 0);
+			y += HEIGHT(c);
+		}
+}
+
 void
 tile(Monitor *m)
 {
-- 
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