From 86f29e989de8419cb89fa507b434c76106750324 Mon Sep 17 00:00:00 2001
From: Sky Leite <sky@leite.dev>
Date: Sun, 15 Sep 2024 10:39:05 -0300
Subject: [PATCH] Make system cursor optional

Fixes an issue where running the program in a platform without a mouse cursor (like an embedded device) would crash with the following error:

`called `Result::unwrap()` on an `Err` value: "CreateSystemCursor is not currently supported"`
---
 src/lib.rs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index f1740fc..08ea8d0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -41,14 +41,14 @@ impl RepaintSignal for Signal {
 }
 
 pub struct FusedCursor {
-    pub cursor: Cursor,
+    pub cursor: Option<Cursor>,
     pub icon: SystemCursor,
 }
 
 impl FusedCursor {
     pub fn new() -> Self {
         Self {
-            cursor: Cursor::from_system(SystemCursor::Arrow).unwrap(),
+            cursor: Cursor::from_system(SystemCursor::Arrow).ok(),
             icon: SystemCursor::Arrow,
         }
     }
@@ -422,8 +422,10 @@ pub fn translate_cursor(fused: &mut FusedCursor, cursor_icon: egui::CursorIcon)
     };
 
     if tmp_icon != fused.icon {
-        fused.cursor = Cursor::from_system(tmp_icon).unwrap();
+        fused.cursor = Cursor::from_system(tmp_icon).ok();
         fused.icon = tmp_icon;
-        fused.cursor.set();
+        if let Some(cursor) = &fused.cursor {
+            cursor.set();
+        }
     }
 }