From 7c60b0a79c83d9ba51dd6980b4c772001a011f62 Mon Sep 17 00:00:00 2001
From: sheldonmlee <sheldon.m.lee@gmail.com>
Date: Sat, 23 Oct 2021 19:29:45 +0800
Subject: [PATCH] Add toggle for first window centering.

---
 config.h | 12 ++++++++----
 dwm.c    | 27 +++++++++++++++++----------
 2 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/config.h b/config.h
index af48a0d..9267f04 100644
--- a/config.h
+++ b/config.h
@@ -54,6 +54,9 @@ static const Rule rules[] = {
 	{ "Steam",        NULL,       NULL,       1 << 3,       0,           0,           -1 },
 	{ "Lutris",       NULL,       NULL,       1 << 3,       0,           0,           -1 },
 	{ "UE4Editor",    NULL,       NULL,       1 << 3,       0,           0,           -1 },
+	/* zoom */
+	{ "zoom",         NULL,       NULL,       0,            0,           1,           -1 },
+	{ "zoom",         NULL,  "Zoom Meeting",  0,            0,           1,           -1 },
 };
 
 /* layout(s) */
@@ -97,7 +100,7 @@ void focusmaster(const Arg* arg);
 /* variables */
 static int gamingmodmask = ALTKEY|MODKEY; /* mod keys to disable when gaming */
 
-static Key togglegamingkey = { MODKEY|ControlMask, XK_g, togglegaming, {0} };
+static Key togglegamingkey = { MODKEY, XK_g, togglegaming, {0} };
 
 static Key keys[] = {
 	/* modifier                     key        function        argument */
@@ -119,10 +122,11 @@ static Key keys[] = {
 	{ MODKEY|ControlMask,           XK_Return, zoom,           {0} },
 	{ MODKEY,                       XK_Tab,    view,           {0} },
 	{ MODKEY,                       XK_w,      killclient,     {0} },
-	{ MODKEY,                       XK_1,      setlayout,   {.v = &layouts[0]} },
-	{ MODKEY,                       XK_2,      setlayout,   {.v = &layouts[1]} },
-	{ MODKEY,                       XK_3,      setlayout,   {.v = &layouts[4]} },
+	{ MODKEY,                       XK_1,      setlayout,      {.v = &layouts[0]} },
+	{ MODKEY,                       XK_2,      setlayout,      {.v = &layouts[1]} },
+	{ MODKEY,                       XK_3,      setlayout,      {.v = &layouts[4]} },
 	{ MODKEY,                       XK_f,      togglelayout,   {.v = &layouts[3]} },
+	{ MODKEY,                       XK_p,      togglecenterfirst,   {0} },
 	{ MODKEY,                       XK_apostrophe,  focusmaster,{0} },
 	{ MODKEY|ControlMask,           XK_space,  togglefloating, {0} },
 	{ MODKEY,                       XK_0,      view,           {.ui = ~0 } },
diff --git a/dwm.c b/dwm.c
index 9e8143c..3225266 100644
--- a/dwm.c
+++ b/dwm.c
@@ -238,6 +238,7 @@ static int xerrorstart(Display *dpy, XErrorEvent *ee);
 static void zoom(const Arg *arg);
 static void centeredmaster(Monitor *m);
 static void centeredfloatingmaster(Monitor *m);
+static void togglecenterfirst(const Arg *arg);
 static void togglelayout(const Arg *arg);
 static void togglegaming(const Arg *arg);
 static int iskey(KeySym *keysym, XKeyEvent *ev, Key *key);
@@ -276,6 +277,7 @@ static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
 static int isgaming = 0;
+static int centerfirst = 0;
 
 /* configuration, allows nested code to access above variables */
 #include "config.h"
@@ -1726,12 +1728,14 @@ tile(Monitor *m)
 		return;
 
 	c = nexttiled(m->clients);
-	if (n == 1 && c && c->iscentered){
-		resize(c, 
+	if (n == 1 && centerfirst && c && c->iscentered){
+		resize(
+				c, 
 				m->wx + m->ww*(1 - m->mfact)/2,
 				m->wy,
 				m->ww * m->mfact - 2 * m->sel->bw,
-				m->wh - 2 * m->sel->bw, 0
+				m->wh - 2 * m->sel->bw,
+				0
 				);
 		return;
 	}
@@ -1752,13 +1756,6 @@ tile(Monitor *m)
 			if (ty + HEIGHT(c) < m->wh)
 				ty += HEIGHT(c);
 		}
-	if (n == 1 && m->sel->iscentered)
-		resize(m->sel, 
-				(m->wx + m->ww*(1 - m->mfact)/2),
-				m->wy,
-				m->ww * m->mfact - 2 * m->sel->bw,
-				m->wh - 2 * m->sel->bw, 0
-				);
 }
 
 void
@@ -2337,3 +2334,13 @@ togglegaming(const Arg* arg)
 	grabkeys();
 }
 
+void /* toggle center first window */
+togglecenterfirst(const Arg* arg)
+{
+	centerfirst ^= 1;	
+	if (selmon->sel)
+		arrange(selmon);
+	else
+		drawbar(selmon);
+}
+