From bfa185fac49d62f4d2f313df0cb7cd98a7546ca5 Mon Sep 17 00:00:00 2001
From: Sravan Balaji <balajsra@umich.edu>
Date: Sun, 30 Aug 2020 13:43:21 -0400
Subject: [PATCH] gridmode patch

- Apply gridmode patch
- Add patch link to README
- Add new layout keybinding to man page
---
 README.md |  1 +
 config.h  |  4 ++++
 dwm.1     |  3 +++
 layouts.c | 27 +++++++++++++++++++++++++++
 4 files changed, 35 insertions(+)
 create mode 100644 layouts.c

diff --git a/README.md b/README.md
index 90a8872..d79ae81 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ and (re)compiling the source code.
 * [autostart](https://dwm.suckless.org/patches/autostart/)
 * [centeredmaster](https://dwm.suckless.org/patches/centeredmaster/)
 * [combo](https://dwm.suckless.org/patches/combo/)
+* [gridmode](https://dwm.suckless.org/patches/gridmode/)
 * [movestack](https://dwm.suckless.org/patches/movestack/)
 * [ru_gaps](https://dwm.suckless.org/patches/ru_gaps/)
 * [systray](https://dwm.suckless.org/patches/systray/)
diff --git a/config.h b/config.h
index 14b41e8..9723c0a 100644
--- a/config.h
+++ b/config.h
@@ -44,6 +44,7 @@ static const float mfact     = 0.55; /* factor of master area size [0.05..0.95]
 static const int nmaster     = 1;    /* number of clients in master area */
 static const int resizehints = 1;    /* 1 means respect size hints in tiled resizals */
 
+#include "layouts.c"
 static const Layout layouts[] = {
 	/* symbol     arrange function */
 	{ "[]=",      tile },    /* first entry is default */
@@ -51,6 +52,7 @@ static const Layout layouts[] = {
 	{ "[M]",      monocle },
 	{ "|M|",      centeredmaster },
 	{ ">M>",      centeredfloatingmaster },
+	{ "HHH",      grid },
 };
 
 /* key definitions */
@@ -83,6 +85,7 @@ static const char *playernextcmd[]		= { "playerctl", "--player=playerctld", "nex
 static const char *playerprevcmd[]		= { "playerctl", "--player=playerctld", "previous",   NULL };
 static const char *flameshotcmd[]		= { "flameshot", "gui",	NULL };
 
+/* key definitions */
 static Key keys[] = {
 	/* modifier				key							function		argument */
 	{ MODKEY,				XK_p,						spawn,          {.v = rofiruncmd} },
@@ -108,6 +111,7 @@ static Key keys[] = {
 	{ MODKEY,               XK_m,						setlayout,      {.v = &layouts[2]} },
 	{ MODKEY,				XK_u,						setlayout,		{.v = &layouts[3]} },
 	{ MODKEY,				XK_o,						setlayout,		{.v = &layouts[4]} },
+	{ MODKEY,				XK_g,						setlayout,		{.v = &layouts[5]} },
 	{ MODKEY,               XK_space,					setlayout,      {0} },
 	{ MODKEY|ShiftMask,     XK_space,					togglefloating, {0} },
 	{ MODKEY,               XK_0,						view,           {.ui = ~0} },
diff --git a/dwm.1 b/dwm.1
index 6c0f349..a6d4fbc 100644
--- a/dwm.1
+++ b/dwm.1
@@ -131,6 +131,9 @@ Sets centered master layout.
 .B Mod1\-o
 Sets centered floating master layout.
 .TP
+.B Mod1\-g
+Sets grid layout.
+.TP
 .B Mod1\-space
 Toggles between current and previous layout.
 .TP
diff --git a/layouts.c b/layouts.c
new file mode 100644
index 0000000..d26acf3
--- /dev/null
+++ b/layouts.c
@@ -0,0 +1,27 @@
+void
+grid(Monitor *m) {
+	unsigned int i, n, cx, cy, cw, ch, aw, ah, cols, rows;
+	Client *c;
+
+	for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next))
+		n++;
+
+	/* grid dimensions */
+	for(rows = 0; rows <= n/2; rows++)
+		if(rows*rows >= n)
+			break;
+	cols = (rows && (rows - 1) * rows >= n) ? rows - 1 : rows;
+
+	/* window geoms (cell height/width) */
+	ch = m->wh / (rows ? rows : 1);
+	cw = m->ww / (cols ? cols : 1);
+	for(i = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next)) {
+		cx = m->wx + (i / rows) * cw;
+		cy = m->wy + (i % rows) * ch;
+		/* adjust height/width of last row/column's windows */
+		ah = ((i + 1) % rows == 0) ? m->wh - ch * rows : 0;
+		aw = (i >= rows * (cols - 1)) ? m->ww - cw * cols : 0;
+		resize(c, cx, cy, cw - 2 * c->bw + aw, ch - 2 * c->bw + ah, False);
+		i++;
+	}
+}