From d59d1fcbaacacc8fffa8cbf6212e1013f95d4e0e Mon Sep 17 00:00:00 2001
From: Bakkeby <bakkeby@gmail.com>
Date: Mon, 10 Jan 2022 11:09:11 +0100
Subject: [PATCH] alpha deck layout: only show the currently focused window 
 (rather than all windows stacked on top of each other)

---
 config.def.h |  2 ++
 dwm.c        | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/config.def.h b/config.def.h
index a2ac963..a52bbfa 100644
--- a/config.def.h
+++ b/config.def.h
@@ -42,6 +42,7 @@ static const Layout layouts[] = {
 	{ "[]=",      tile },    /* first entry is default */
 	{ "><>",      NULL },    /* no layout function means floating behavior */
 	{ "[M]",      monocle },
+	{ "[D]",      deck },
 };
 
 /* key definitions */
@@ -77,6 +78,7 @@ static Key keys[] = {
 	{ MODKEY,                       XK_t,      setlayout,      {.v = &layouts[0]} },
 	{ MODKEY,                       XK_f,      setlayout,      {.v = &layouts[1]} },
 	{ MODKEY,                       XK_m,      setlayout,      {.v = &layouts[2]} },
+	{ MODKEY,                       XK_c,      setlayout,      {.v = &layouts[3]} },
 	{ MODKEY,                       XK_space,  setlayout,      {0} },
 	{ MODKEY|ShiftMask,             XK_space,  togglefloating, {0} },
 	{ MODKEY,                       XK_0,      view,           {.ui = ~0 } },
diff --git a/dwm.c b/dwm.c
index a96f33c..4d79804 100644
--- a/dwm.c
+++ b/dwm.c
@@ -157,6 +157,7 @@ static void configure(Client *c);
 static void configurenotify(XEvent *e);
 static void configurerequest(XEvent *e);
 static Monitor *createmon(void);
+static void deck(Monitor *m);
 static void destroynotify(XEvent *e);
 static void detach(Client *c);
 static void detachstack(Client *c);
@@ -645,6 +646,43 @@ createmon(void)
 	return m;
 }
 
+void
+deck(Monitor *m) {
+	unsigned int i, n, h, mw, my;
+	Client *c, *s;
+
+	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;
+		snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n - m->nmaster);
+	}
+	else
+		mw = m->ww;
+	for (i = my = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+		if (i < m->nmaster) {
+			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
+			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), False);
+			my += HEIGHT(c);
+		}
+		else
+			XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
+
+	for (s = m->stack; s; s = s->snext) {
+		if (!ISVISIBLE(s) || s->isfloating)
+			continue;
+
+		for (i = my = 0, c = nexttiled(m->clients); c && c != s; c = nexttiled(c->next), i++);
+		if (i < m->nmaster)
+			continue;
+		XMoveWindow(dpy, s->win, c->x, c->y);
+		resize(s, m->wx + mw, m->wy, m->ww - mw - (2*s->bw), m->wh - (2*s->bw), False);
+		break;
+	}
+}
+
 void
 destroynotify(XEvent *e)
 {
@@ -806,6 +844,8 @@ focus(Client *c)
 		XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
 	}
 	selmon->sel = c;
+	if (selmon->lt[selmon->sellt]->arrange == deck)
+		arrangemon(selmon);
 	drawbars();
 }
 
-- 
2.19.1