PID editor can now be locked to disable editing

src/ui/panes/pid_drawing_tool.rs

@@ -39,6 +39,9 @@ pub struct PidPane {
 
     #[serde(skip)]
     action: Option<Action>,
+
+    #[serde(skip)]
+    editable: bool,
 }
 
 impl Default for PidPane {
@@ -47,8 +50,8 @@ impl Default for PidPane {
             elements: Vec::default(),
             connections: Vec::default(),
             grid: GridInfo { size: 10.0 },
-
             action: None,
+            editable: false,
         }
     }
 }
@@ -56,8 +59,12 @@ impl Default for PidPane {
 impl PaneBehavior for PidPane {
     fn ui(&mut self, ui: &mut egui::Ui) -> PaneResponse {
         let theme = PidPane::find_theme(ui.ctx());
+
+        if self.editable {
             self.draw_grid(theme, ui);
-        self.draw_connections(theme, ui);
+        }
+
+        self.draw_connections(theme, self.editable, ui);
         self.draw_elements(theme, ui);
 
         // Allocate the space to sense inputs
@@ -66,8 +73,9 @@ impl PaneBehavior for PidPane {
 
         // Set grab icon when hovering an element
         if let Some(pointer_pos) = &pointer_pos {
-            if self.is_hovering_element(pointer_pos)
-                || self.is_hovering_connection_point(pointer_pos)
+            if self.editable
+                && (self.is_hovering_element(pointer_pos)
+                    || self.is_hovering_connection_point(pointer_pos))
             {
                 ui.ctx()
                     .output_mut(|output| output.cursor_icon = CursorIcon::Grab);
@@ -79,7 +87,8 @@ impl PaneBehavior for PidPane {
             if response.clicked_by(PointerButton::Secondary) {
                 println!("Context menu opened");
                 self.action = Some(Action::ContextMenu(pointer_pos.clone()));
-            } else if response.drag_started() {
+            } else if self.editable {
+                if response.drag_started() {
                     println!("Checking drag start at {:?}", pointer_pos);
                     if let Some(drag_connection_point) = self
                         .find_hovered_connection_point(pointer_pos)
@@ -100,6 +109,7 @@ impl PaneBehavior for PidPane {
                     println!("Drag stopped");
                 }
             }
+        }
 
         // Context menu
         if let Some(Action::ContextMenu(pointer_pos)) = self.action.clone() {
@@ -236,7 +246,7 @@ impl PidPane {
         }
     }
 
-    fn draw_connections(&self, theme: Theme, ui: &Ui) {
+    fn draw_connections(&self, theme: Theme, draw_handles: bool, ui: &Ui) {
         let painter = ui.painter();
 
         for connection in &self.connections {
@@ -270,7 +280,8 @@ impl PidPane {
                 painter.line_segment([a, b], PathStroke::new(2.0, line_color));
             }
 
-            // Draw dragging boxes
+            // Draw handles (dragging boxes)
+            if draw_handles {
                 for middle_point in &connection.middle_points {
                     painter.rect(
                         egui::Rect::from_center_size(
@@ -284,6 +295,7 @@ impl PidPane {
                 }
             }
         }
+    }
 
     fn draw_elements(&self, theme: Theme, ui: &Ui) {
         for element in &self.elements {
@@ -307,6 +319,14 @@ impl PidPane {
     fn draw_context_menu(&mut self, pointer_pos: &Pos2, ui: &mut Ui) {
         ui.set_max_width(120.0); // To make sure we wrap long text
 
+        if !self.editable {
+            if ui.button("Enable editing").clicked() {
+                self.editable = true;
+                ui.close_menu();
+            }
+            return;
+        }
+
         if self.is_hovering_element(&pointer_pos) {
             let hovered_element = self.find_hovered_element_idx(&pointer_pos);
             if ui.button("Connect").clicked() {
@@ -373,6 +393,11 @@ impl PidPane {
                 }
             });
         }
+
+        if ui.button("Disable editing").clicked() {
+            self.editable = false;
+            ui.close_menu();
+        }
     }
 
     fn delete_element(&mut self, idx: usize) {