From c766bb02f02432e76b727f3f055f50005d441133 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Leonardo=20Hern=C3=A1ndez=20Hern=C3=A1ndez?=
 <leohdz172@protonmail.com>
Date: Sun, 10 Apr 2022 22:38:53 -0500
Subject: [PATCH] hide-behind-fullscreen

---
 config.def.h |  2 +-
 dwl.c        | 18 +++++++++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/config.def.h b/config.def.h
index 33a8089..93b2fdc 100644
--- a/config.def.h
+++ b/config.def.h
@@ -18,7 +18,7 @@ static const float bordercolor[]           = COLOR(0x444444ff);
 static const float focuscolor[]            = COLOR(0x005577ff);
 static const float urgentcolor[]           = COLOR(0xff0000ff);
 /* To conform the xdg-protocol, set the alpha to zero to restore the old behavior */
-static const float fullscreen_bg[]         = {0.1, 0.1, 0.1, 1.0}; /* You can also use glsl colors */
+static const float fullscreen_bg[]         = {0.1, 0.1, 0.1, 0.0}; /* You can also use glsl colors */
 static const float default_opacity         = 0.75;
 
 /* tagging - TAGCOUNT must be no greater than 31 */
diff --git a/dwl.c b/dwl.c
index 5ba5593..23dae9e 100644
--- a/dwl.c
+++ b/dwl.c
@@ -536,7 +536,9 @@ applyrules(Client *c)
 void
 arrange(Monitor *m)
 {
-	Client *c;
+	LayerSurface *l;
+	Client *c, *sel = focustop(selmon);
+	int i;
 	wl_list_for_each(c, &clients, link) {
 		if (c->mon == m) {
 			wlr_scene_node_set_enabled(&c->scene->node, VISIBLEON(c, m));
@@ -549,6 +551,20 @@ arrange(Monitor *m)
 
 	strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, LENGTH(m->ltsymbol));
 
+	if (sel && sel->isfullscreen && VISIBLEON(sel, m)) {
+		for (i = 3; i > ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND; i--)
+			wl_list_for_each(l, &sel->mon->layers[i], link)
+				wlr_scene_node_set_enabled(&l->scene->node, 0);
+
+		wl_list_for_each(c, &clients, link)
+			wlr_scene_node_set_enabled(&c->scene->node, (sel->isfullscreen && c == sel)
+					|| !sel->isfullscreen);
+	}
+	if (!sel || (!sel->isfullscreen && VISIBLEON(sel, m)))
+		for (i = 3; i > ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND; i--)
+			wl_list_for_each(l, &m->layers[i], link)
+				wlr_scene_node_set_enabled(&l->scene->node, 1);
+
 	if (m->lt[m->sellt]->arrange)
 		m->lt[m->sellt]->arrange(m);
 	motionnotify(0, NULL, 0, 0, 0, 0);