From ac76d998f1e70c89b313a2fea676678d511941d4 Mon Sep 17 00:00:00 2001
From: Tobias Giess <tobias.giess@gmail.com>
Date: Wed, 17 Jun 2020 19:13:02 +0200
Subject: [PATCH] fix cfacts not working on stack

One line got lost while porting the cfacts patch from version 6.1 to version 6.2.
This single line caused that the cfacts patch was only working on master clients
but not on stack clients.
---
 config.def.h |  3 +++
 dwm.c        | 34 +++++++++++++++++++++++++++++++---
 2 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/config.def.h b/config.def.h
index 1c0b587..83910c1 100644
--- a/config.def.h
+++ b/config.def.h
@@ -70,6 +70,9 @@ static Key keys[] = {
 	{ MODKEY,                       XK_d,      incnmaster,     {.i = -1 } },
 	{ MODKEY,                       XK_h,      setmfact,       {.f = -0.05} },
 	{ MODKEY,                       XK_l,      setmfact,       {.f = +0.05} },
+	{ MODKEY|ShiftMask,             XK_h,      setcfact,       {.f = +0.25} },
+	{ MODKEY|ShiftMask,             XK_l,      setcfact,       {.f = -0.25} },
+	{ MODKEY|ShiftMask,             XK_o,      setcfact,       {.f =  0.00} },
 	{ MODKEY,                       XK_Return, zoom,           {0} },
 	{ MODKEY,                       XK_Tab,    view,           {0} },
 	{ MODKEY|ShiftMask,             XK_c,      killclient,     {0} },
diff --git a/dwm.c b/dwm.c
index 4465af1..c0ad1b3 100644
--- a/dwm.c
+++ b/dwm.c
@@ -87,6 +87,7 @@ typedef struct Client Client;
 struct Client {
 	char name[256];
 	float mina, maxa;
+	float cfact;
 	int x, y, w, h;
 	int oldx, oldy, oldw, oldh;
 	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
@@ -200,6 +201,7 @@ static void setclientstate(Client *c, long state);
 static void setfocus(Client *c);
 static void setfullscreen(Client *c, int fullscreen);
 static void setlayout(const Arg *arg);
+static void setcfact(const Arg *arg);
 static void setmfact(const Arg *arg);
 static void setup(void);
 static void seturgent(Client *c, int urg);
@@ -1029,6 +1031,7 @@ manage(Window w, XWindowAttributes *wa)
 	c->w = c->oldw = wa->width;
 	c->h = c->oldh = wa->height;
 	c->oldbw = wa->border_width;
+	c->cfact = 1.0;
 
 	updatetitle(c);
 	if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
@@ -1511,6 +1514,23 @@ setlayout(const Arg *arg)
 		drawbar(selmon);
 }
 
+void setcfact(const Arg *arg) {
+	float f;
+	Client *c;
+
+	c = selmon->sel;
+
+	if(!arg || !c || !selmon->lt[selmon->sellt]->arrange)
+		return;
+	f = arg->f + c->cfact;
+	if(arg->f == 0.0)
+		f = 1.0;
+	else if(f < 0.25 || f > 4.0)
+		return;
+	c->cfact = f;
+	arrange(selmon);
+}
+
 /* arg > 1.0 will set mfact absolutely */
 void
 setmfact(const Arg *arg)
@@ -1674,9 +1694,15 @@ void
 tile(Monitor *m)
 {
 	unsigned int i, n, h, mw, my, ty;
+	float mfacts = 0, sfacts = 0;
 	Client *c;
 
-	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) {
+		if (n < m->nmaster)
+			mfacts += c->cfact;
+		else
+			sfacts += c->cfact;
+	}
 	if (n == 0)
 		return;
 
@@ -1686,13 +1712,15 @@ tile(Monitor *m)
 		mw = m->ww;
 	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
 		if (i < m->nmaster) {
-			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
+			h = (m->wh - my) * (c->cfact / mfacts);
 			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
 			my += HEIGHT(c);
+			mfacts -= c->cfact;
 		} else {
-			h = (m->wh - ty) / (n - i);
+			h = (m->wh - ty) * (c->cfact / sfacts);
 			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
 			ty += HEIGHT(c);
+			sfacts -= c->cfact;
 		}
 }
 
-- 
2.27.0