From cb3cac91db32403bb581aecbc2957b00bb49c898 Mon Sep 17 00:00:00 2001
From: aleks <aleks.stier@icloud.com>
Date: Mon, 6 May 2019 16:34:58 +0200
Subject: [PATCH] Add deck-layout

deck is a dwm-layout which is inspired by the TTWM window manager.
It applies the monocle-layout to the clients in the stack.
The master-client is still visible. The stacked clients are like
a deck of cards, hence the name.

The vanilla patch doesn't work properly with patches which add gaps.
This means that when the deck-layout is activated gaps are omitted.
To make it work with the tilegap-patch apply the dwm-deck-tilegap patch
on top of the dwm-deck patch.

The vanilla patch doesn't respect the master-area which is defined by
the rmaster-patch. To make it work with the rmaster-patch apply the
dwm-deck-rmaster patch on top of the dwm-deck patch.
---
 config.def.h |  2 ++
 dwm.c        | 26 ++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/config.def.h b/config.def.h
index 77ff358..55d8a07 100644
--- a/config.def.h
+++ b/config.def.h
@@ -32,6 +32,7 @@ static const Layout layouts[] = {
 	{ "[]=",      tile },    /* first entry is default */
 	{ "><>",      NULL },    /* no layout function means floating behavior */
 	{ "[M]",      monocle },
+	{ "[D]",      deck },
 };
 
 /* key definitions */
@@ -66,6 +67,7 @@ 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 1d78655..356ab44 100644
--- a/dwm.c
+++ b/dwm.c
@@ -171,6 +171,7 @@ 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);
@@ -669,6 +670,31 @@ destroynotify(XEvent *e) {
 		unmanage(c, True);
 }
 
+void
+deck(Monitor *m) {
+	unsigned int i, n, h, mw, my;
+	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;
+		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
+			resize(c, m->wx + mw, m->wy, m->ww - mw - (2*c->bw), m->wh - (2*c->bw), False);
+}
+
 void
 detach(Client *c) {
 	Client **tc;
-- 
2.21.0