feat(viewport): expand ZOOMFACTOR range to 500

src/app/commands/styleprops.rs

@@ -1688,11 +1688,11 @@ impl OpenCADStudio {
                             },
                             "ZOOMFACTOR" => match &value {
                                 Some(v) => match v.parse::<i32>() {
-                                    Ok(factor) if (3..=100).contains(&factor) => {
+                                    Ok(factor) if (3..=500).contains(&factor) => {
                                         self.zoom_factor = factor;
                                         Ok((format!("ZOOMFACTOR = {factor}"), true))
                                     }
-                                    _ => Err("SETVAR: integer from 3 to 100 required.".into()),
+                                    _ => Err("SETVAR: integer from 3 to 500 required.".into()),
                                 },
                                 None => {
                                     Ok((format!("ZOOMFACTOR = {}", self.zoom_factor), false))

src/app/mod.rs

@@ -554,7 +554,7 @@ pub(super) struct OpenCADStudio {
     polar_increment_deg: f32,
     /// Reverse the mouse-wheel zoom direction when true (ZOOMWHEEL = 1).
     zoom_wheel_reversed: bool,
-    /// Mouse-wheel zoom sensitivity, clamped to 3..=100 (ZOOMFACTOR).
+    /// Mouse-wheel zoom sensitivity, clamped to 3..=500 (ZOOMFACTOR).
     zoom_factor: i32,
     /// Crosshair size setting (CURSORSIZE, 1..=100).
     cursor_size: i32,
@@ -2308,7 +2308,7 @@ pub enum Message {
     CommandLineFadeChanged(i32),
     /// Toggle reversing the mouse-wheel zoom direction (ZOOMWHEEL).
     ZoomWheelReversedChanged(bool),
-    /// Change how far one wheel notch zooms (ZOOMFACTOR, 3..=100).
+    /// Change how far one wheel notch zooms (ZOOMFACTOR, 3..=500).
     ZoomFactorChanged(i32),
     /// Options → User Preferences: right-click behaviour (SHORTCUTMENU).
     RightClickModeChanged(settings::RightClickMode),

src/app/options_session.rs

@@ -222,4 +222,15 @@ mod tests {
         assert_eq!(h.display_silhouette, silhouette);
         assert!(!app.tabs[i].dirty, "the drawing is as unmodified as it was");
     }
+
+    #[test]
+    fn zoom_factor_supports_values_above_100() {
+        let mut app = app();
+        let _ = app.update(Message::ZoomFactorChanged(250));
+        assert_eq!(app.zoom_factor, 250);
+        let _ = app.update(Message::ZoomFactorChanged(500));
+        assert_eq!(app.zoom_factor, 500);
+        let _ = app.update(Message::ZoomFactorChanged(600));
+        assert_eq!(app.zoom_factor, 500, "clamped to new upper limit of 500");
+    }
 }

src/app/update/file.rs

@@ -743,7 +743,7 @@ impl OpenCADStudio {
         self.polar_mode = s.polar;
         self.polar_increment_deg = s.polar_increment_deg;
         self.zoom_wheel_reversed = s.zoom_wheel_reversed;
-        self.zoom_factor = s.zoom_factor.clamp(3, 100);
+        self.zoom_factor = s.zoom_factor.clamp(3, 500);
         self.cursor_size = s.cursor_size.clamp(1, 100);
         self.pick_box = s.pick_box.clamp(0, 50);
         self.options_tab = s.options_tab;

src/app/update/mod.rs

@@ -8239,7 +8239,7 @@ impl OpenCADStudio {
             }
 
             Message::ZoomFactorChanged(factor) => {
-                self.zoom_factor = factor.clamp(3, 100);
+                self.zoom_factor = factor.clamp(3, 500);
                 self.persist_settings_if_changed();
                 Task::none()
             }