From 38beaa26092917cde00f4c135122fb61aecec1ae Mon Sep 17 00:00:00 2001
From: Florian Müllner <fmuellner@gnome.org>
Date: Sep 05 2019 22:17:54 +0000
Subject: prefs: Add sane fallback preview size


When we cannot query the actual monitor dimensions for some reason,
the previews currently ends squashed to a height of 0. Just assume
a 16:9 ratio in that case to get a sane fallback.

https://pagure.io/background-logo-extension/pull-request/18

---

diff --git a/prefs.js b/prefs.js
index b827ae2..dbff639 100644
--- a/prefs.js
+++ b/prefs.js
@@ -191,6 +191,13 @@ class BackgroundLogoPrefsWidget extends Gtk.Grid {
             return;
 
         let rect = screen.get_monitor_geometry(screen.get_primary_monitor());
+
+        // If we can't get the actual geometry (wayland), use sane fallbacks
+        if (rect.width === 0 || rect.height === 0) {
+            rect.width = PREVIEW_WIDTH;
+            rect.height = PREVIEW_WIDTH * 9 / 16;
+        }
+
         this._scale = PREVIEW_WIDTH / rect.width;
         this._preview.set_size_request(
             PREVIEW_WIDTH,