From 295945a45db881627501eb4dbca151aaa6b8b8ed Mon Sep 17 00:00:00 2001
From: tvtur <tur.timothy@gmail.com>
Date: Mon, 13 Apr 2026 13:21:13 +0300
Subject: [PATCH] hide-behind-deck

---
 dwl.c | 54 +++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 37 insertions(+), 17 deletions(-)

diff --git a/dwl.c b/dwl.c
index 5d6db1a..090d44d 100644
--- a/dwl.c
+++ b/dwl.c
@@ -137,7 +137,7 @@ typedef struct {
 #endif
 	unsigned int bw;
 	uint32_t tags;
-	int isfloating, isurgent, isfullscreen;
+	int isfloating, isurgent, isfullscreen, ismaster;
 	uint32_t resize; /* configure serial of a pending resize */
 } Client;
 
@@ -290,7 +290,7 @@ static Client *focustop(Monitor *m, int onlytiled);
 static void fullscreennotify(struct wl_listener *listener, void *data);
 static void gpureset(struct wl_listener *listener, void *data);
 static void handlesig(int signo);
-static void hidebehindmonocle(Monitor *m);
+static void hidebehind(Monitor *m);
 static void incnmaster(const Arg *arg);
 static void inputdevice(struct wl_listener *listener, void *data);
 static int keybinding(uint32_t mods, xkb_keysym_t sym);
@@ -1431,7 +1431,7 @@ focusclient(Client *c, int lift)
 		wl_list_insert(&fstack, &c->flink);
 		selmon = c->mon;
 		c->isurgent = 0;
-		hidebehindmonocle(c->mon);
+		hidebehind(c->mon);
 
 		/* Don't change border color if there is an exclusive focus or we are
 		 * handling a drag operation */
@@ -1573,21 +1573,38 @@ handlesig(int signo)
 }
 
 void
-hidebehindmonocle(Monitor *m)
+hidebehind(Monitor *m)
 {
 	Client *c;
-	if (m && m->lt[m->sellt]->arrange == monocle) {
-		wl_list_for_each(c, &clients, link) {
-			if (c->mon != m)
-				continue;
-			wlr_scene_node_set_enabled(&c->scene->node, VISIBLEON(c, m) && c->isfloating);
-		}
+	int check1 = 0;
 
-		c = NULL;
-
-		/* Enable top tiled client, fullscreen is considered tiled */
-		if ((c = focustop(m, 1)))
-			wlr_scene_node_set_enabled(&c->scene->node, 1);
+	if (m) {
+		if (m && m->lt[m->sellt]->arrange == monocle) {
+			wl_list_for_each(c, &clients, link) {
+				if (c->mon != m)
+					continue;
+				wlr_scene_node_set_enabled(&c->scene->node, VISIBLEON(c, m) && c->isfloating);
+			}
+			c = NULL;
+			/* Enable top tiled client, fullscreen is considered tiled */
+			if ((c = focustop(m, 1)))
+				wlr_scene_node_set_enabled(&c->scene->node, 1);
+		} else if (m && m->lt[m->sellt]->arrange == deck) {
+			wl_list_for_each(c, &fstack, flink) {
+				if (!VISIBLEON(c, m))
+					continue;
+				if (c->isfloating || c->ismaster) {
+					wlr_scene_node_set_enabled(&c->scene->node, 1);
+					continue;
+				}
+				if (!check1 && !c->ismaster) {
+					wlr_scene_node_set_enabled(&c->scene->node, 1);
+					check1 = 1;
+					continue;
+				}
+				wlr_scene_node_set_enabled(&c->scene->node, 0);
+			}
+		}
 	}
 }
 
@@ -1859,7 +1876,7 @@ monocle(Monitor *m)
 	}
 	if (n)
 		snprintf(m->ltsymbol, LENGTH(m->ltsymbol), "[%d]", n);
-	hidebehindmonocle(m);
+	hidebehind(m);
 }
 
 void
@@ -1871,7 +1888,6 @@ deck(Monitor *m)
 
 	/* count tiled clients */
 	wl_list_for_each(c, &clients, link)
-
 		/* if (VISIBLEON(c, m) && !c->isfloating && !c->isfullscreen) */
 		if (VISIBLEON(c, m) && !c->isfloating)
 			n++;
@@ -1909,6 +1925,7 @@ deck(Monitor *m)
 				.height = (m->w.height - my) / (MIN(n, m->nmaster) - i)
 			}, 0);
 			my += c->geom.height;
+			c->ismaster = 1;
 		} else {
 			/* deck clients: overlap in stack area */
 			resize(c, (struct wlr_box){
@@ -1917,9 +1934,12 @@ deck(Monitor *m)
 				.width = m->w.width - mw,
 				.height = m->w.height
 			}, 0);
+			c->ismaster = 0;
 		}
 		i++;
 	}
+
+	hidebehind(m);
 }
 
 void
-- 
2.53.0