feat: drag and drop (outside of wayland)

src/main.rs

@@ -111,6 +111,16 @@ impl State {
                 _ => {}
             },
 
+            Message::Event(iced::Event::Window(window_event)) => match window_event {
+                window::Event::FileDropped(file) => {
+                    self.error = self.load_image(file);
+                    return self.allocate_image();
+                }
+
+                // ignore unused window events
+                _ => {}
+            },
+
             // ignore unused events
             Message::Event(_) => {}
         }