From 13ea4e72340b8c67042ff827c995d7258509361b Mon Sep 17 00:00:00 2001
From: Benjamin Chausse <benjamin@chausse.xyz>
Date: Fri, 26 Jan 2024 18:56:49 -0500
Subject: Implement defaultlayoutpermonitor

---
 config.def.h |  5 +++++
 dwm.c        | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/config.def.h b/config.def.h
index 9c2b2c5..804752e 100644
--- a/config.def.h
+++ b/config.def.h
@@ -45,6 +45,11 @@ static const int resizehints = 1;    /* 1 means respect size hints in tiled resi
 static const int lockfullscreen = 1; /* 1 will force focus on the fullscreen window */
 static const int mainmon = 0; /* xsetroot will only change the bar on this monitor */
 
+static const int lpm[] = {
+        /* Index of preferred layout], if LENGTH(lpm)<#monitors -> default layout */
+        0, 5
+};
+
 static const Layout layouts[] = {
 	/* symbol     arrange function */
 	{ "[]=",      tile },    /* first entry is default */
diff --git a/dwm.c b/dwm.c
index ff5322a..f8962e0 100644
--- a/dwm.c
+++ b/dwm.c
@@ -143,6 +143,7 @@ typedef struct {
 } Rule;
 
 /* function declarations */
+static void applydefaultlayouts();
 static void applyrules(Client *c);
 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
 static void arrange(Monitor *m);
@@ -295,6 +296,21 @@ static Colormap cmap;
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
 /* function implementations */
+void
+applydefaultlayouts()
+{
+    Monitor *m;
+    int i = 0;
+    for (m = mons; m; m = m->next) {
+        if (i < LENGTH(lpm)) {
+            m->lt[0] = &layouts[lpm[i]];
+            m->lt[1] = &layouts[(lpm[i] + 1)/ LENGTH(layouts)];
+            strncpy(m->ltsymbol, layouts[i].symbol, sizeof m->ltsymbol);
+        }
+        i++;
+    }
+}
+
 void
 applyrules(Client *c)
 {
@@ -2119,6 +2135,7 @@ updategeom(void)
 				selmon = mons;
 			cleanupmon(m);
 		}
+        applydefaultlayouts();
 		free(unique);
 	} else
 #endif /* XINERAMA */
-- 
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