From 343eb48db858f1b177f170d323740b4c1aa4957f Mon Sep 17 00:00:00 2001
From: trigg <triggerhapp@gmail.com>
Date: Fri, 8 Jan 2021 21:30:18 +0000
Subject: [PATCH] - Error and quit without Layer shell

---
 discover_overlay/overlay.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/discover_overlay/overlay.py b/discover_overlay/overlay.py
index 79c6007..d726b1d 100644
--- a/discover_overlay/overlay.py
+++ b/discover_overlay/overlay.py
@@ -97,6 +97,10 @@ class OverlayWindow(Gtk.Window):
         I have no idea how this should register a fail for Weston/KDE/Gnome
         """
         if self.is_wayland:
+            if not GtkLayerShell.is_supported():
+                logging.info("GTK Layer Shell is not supported on this wayland compositor")
+                logging.info("Currently not possible: Gnome, Plasma, Weston")
+                sys.exit(0)
             GtkLayerShell.init_for_window(self)
             GtkLayerShell.set_layer(self, GtkLayerShell.Layer.OVERLAY)
             GtkLayerShell.set_anchor(self, GtkLayerShell.Edge.LEFT, True)