tile gap patch

config.def.h

@@ -2,6 +2,7 @@
 
 /* appearance */
 static const unsigned int borderpx  = 1;        /* border pixel of windows */
+static const unsigned int gappx     = 18;       /* gap pixel between windows */
 static const unsigned int snap      = 32;       /* snap pixel */
 static const int swallowfloating    = 0;        /* 1 means swallow floating windows by default */
 static const int showbar            = 1;        /* 0 means no standard bar */

dwm.c

@@ -2233,28 +2233,31 @@ tagmon(const Arg *arg)
 void
 tile(Monitor *m)
 {
-	unsigned int i, n, h, mw, my, ty;
+	unsigned int i, n, h, mw, my, ty, ns;
 	Client *c;
 
 	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
 	if (n == 0)
 		return;
 
-	if (n > m->nmaster)
+	if (n > m->nmaster) {
 		mw = m->nmaster ? m->ww * m->mfact : 0;
-	else
+		ns = m->nmaster > 0 ? 2 : 1;
-		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);
-			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
-			if (my + HEIGHT(c) < m->wh)
-				my += HEIGHT(c);
 	} else {
-			h = (m->wh - ty) / (n - i);
+		mw = m->ww;
-			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
+		ns = 1;
+	}
+	for(i = 0, my = ty = gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+		if (i < m->nmaster) {
+			h = (m->wh - my) / (MIN(n, m->nmaster) - i) - gappx;
+			resize(c, m->wx + gappx, m->wy + my, mw - (2*c->bw) - gappx*(5-ns)/2, h - (2*c->bw), False);
+			if (my + HEIGHT(c) < m->wh)
+				my += HEIGHT(c) + gappx;
+		} else {
+			h = (m->wh - ty) / (n - i) - gappx;
+			resize(c, m->wx + mw + gappx/ns, m->wy + ty, m->ww - mw - (2*c->bw) - gappx*(5-ns)/2, h - (2*c->bw), False);
 			if (ty + HEIGHT(c) < m->wh)
-				ty += HEIGHT(c);
+				ty += HEIGHT(c) + gappx;
 		}
 }
 

patches/appearance/dwm-tilegap-6.4.diff

@@ -0,0 +1,77 @@
+From e655302a4bd74c1f2778f94761c87381d1dfc0e2 Mon Sep 17 00:00:00 2001
+From: midspec <obleque@protonmail.com>
+Date: Sat, 4 Nov 2023 19:17:50 +0000
+Subject: [PATCH] Add window-gaps for the tile-layout
+
+Adds gaps between windows in the tile-layout. The proposed advantage to some
+other patches which try to accomplish the same goal is that the gap-size between
+master and stack, window and window, and window and screen-edge is the
+same. The gap-size can be configured in the config.h with the
+gappx-variable.
+
+---
+ config.def.h |  1 +
+ dwm.c        | 23 +++++++++++++----------
+ 2 files changed, 14 insertions(+), 10 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 9efa774..82ba41f 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -2,6 +2,7 @@
+ 
+ /* appearance */
+ static const unsigned int borderpx  = 1;        /* border pixel of windows */
++static const unsigned int gappx     = 18;       /* gap pixel between windows */
+ static const unsigned int snap      = 32;       /* snap pixel */
+ static const int showbar            = 1;        /* 0 means no bar */
+ static const int topbar             = 1;        /* 0 means bottom bar */
+diff --git a/dwm.c b/dwm.c
+index f1d86b2..fa8b3d6 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -1687,28 +1687,31 @@ tagmon(const Arg *arg)
+ void
+ tile(Monitor *m)
+ {
+-	unsigned int i, n, h, mw, my, ty;
++	unsigned int i, n, h, mw, my, ty, ns;
+ 	Client *c;
+ 
+ 	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+ 	if (n == 0)
+ 		return;
+ 
+-	if (n > m->nmaster)
++	if (n > m->nmaster) {
+ 		mw = m->nmaster ? m->ww * m->mfact : 0;
+-	else
++		ns = m->nmaster > 0 ? 2 : 1;
++	} else {
+ 		mw = m->ww;
+-	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
++		ns = 1;
++	}
++	for(i = 0, my = ty = gappx, 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), 0);
++			h = (m->wh - my) / (MIN(n, m->nmaster) - i) - gappx;
++			resize(c, m->wx + gappx, m->wy + my, mw - (2*c->bw) - gappx*(5-ns)/2, h - (2*c->bw), False);
+ 			if (my + HEIGHT(c) < m->wh)
+-				my += HEIGHT(c);
++				my += HEIGHT(c) + gappx;
+ 		} else {
+-			h = (m->wh - ty) / (n - i);
+-			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
++			h = (m->wh - ty) / (n - i) - gappx;
++			resize(c, m->wx + mw + gappx/ns, m->wy + ty, m->ww - mw - (2*c->bw) - gappx*(5-ns)/2, h - (2*c->bw), False);
+ 			if (ty + HEIGHT(c) < m->wh)
+-				ty += HEIGHT(c);
++				ty += HEIGHT(c) + gappx;
+ 		}
+ }
+ 
+-- 
+2.42.0
+