Add pref to hide cursor when handwriting

src/preferences.rs

@@ -10,6 +10,9 @@ pub struct Preferences {
     /// Enable high-contrast theme
     pub high_contrast: bool,
 
+    /// Hide the cursor when handwriting
+    pub hide_handwriting_cursor: bool,
+
     #[serde(skip)]
     has_applied_theme: bool,
 }
@@ -20,6 +23,7 @@ impl Default for Preferences {
             animations: true,
             high_contrast: false,
             has_applied_theme: false,
+            hide_handwriting_cursor: false,
         }
     }
 }
@@ -67,6 +71,8 @@ impl Preferences {
             self.apply(ui.ctx());
         }
 
+        ui.toggle_value(&mut self.hide_handwriting_cursor, "Hide Handwriting Cursor");
+
         egui::widgets::global_theme_preference_buttons(ui);
     }
 }