From dfea960240ed45a660abc1acba2041318127761f Mon Sep 17 00:00:00 2001
From: astier <aleksandrs.stier@uni-bielefeld.de>
Date: Thu, 21 Feb 2019 09:38:38 +0100
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 1c0b587..2ca9e56 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 4465af1..c556a2d 100644
--- a/dwm.c
+++ b/dwm.c
@@ -1673,26 +1673,29 @@ 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);
-			my += HEIGHT(c);
+			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);
+			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);
-			ty += HEIGHT(c);
+			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);
+			ty += HEIGHT(c) + gappx;
 		}
 }
 
-- 
2.20.1