online indicator

src/bin/render_lines_gui.rs

@@ -352,8 +352,9 @@ fn model(app: &App) -> GuiModel {
     // A user-interface to tweak the settings.
     let window = app.window(w_id_lasersettings).unwrap();
     let egui = Egui::from_window(&window);
-    // egui.ctx().set_fonts(fonts());
-    egui.ctx().set_style(style());
+
+    let egui_ctx = egui.ctx();
+    egui_ctx.set_style(style());
 
     let current_lines = RenderableLines::new(); //Vec::new();
 
@@ -393,7 +394,6 @@ fn laser_frame_producer(model: &mut LaserModel, frame: &mut laser::Frame){
     //     println!("Cropped Points {} (was: {})", new_laser_points.len(), pointno);
     // }
 
-    
     frame.add_lines(new_laser_points);
     return;
 }
@@ -628,12 +628,21 @@ fn update(_app: &App, model: &mut GuiModel, update: Update) {
                     );
 
                 for (dac_id, _config) in per_laser_config.iter() {
+                    let is_available = laser_streams.contains_key(&dac_id);
+                    ui.style_mut().visuals.override_text_color = if is_available {Some(egui::Color32::GREEN)} else {None};
+                    ui.style_mut().visuals.widgets.inactive.bg_stroke = if is_available {egui::Stroke::new(2.0, egui::Color32::GREEN)} else {egui::Stroke::NONE};
+                    let name = if let Some(config) = per_laser_config.get(&dac_id) { config.name.clone() } else { "DAC".into() };
+                    let indicator = if is_available{" 🔌"}else{""};
+                    // egui::widgets::SelectableLabel cannot have border unless hovered/highlighted
+                    // TODO: alternatively underscore with ui.painter().rect/hline(ui.selectable_value().rect.max/min, ....)
                     ui.selectable_value(
                         selected_stream,
                         Some(dac_id.clone()),
-                        if let Some(config) = per_laser_config.get(&dac_id) { config.name.clone() } else { "DAC".into() }
+                        format!("{name}{indicator}")
                     );
                 }
+                // reset
+                ui.style_mut().visuals.override_text_color = None;
             });
         }