Add shortcuts tab.

src/app.rs

@@ -73,7 +73,7 @@ impl TabViewer {
                     let magnitude = self.magnitude_series.lock().unwrap();
                     Plot::new("magnitude")
                         .legend(Legend::default().position(Corner::LeftTop))
-                        .y_axis_label("Magnitude at {} Hz[Ω]")
+                        .y_axis_label("Magnitude [Ω]")
                         .y_axis_min_width(80.0)
                         .show(ui, |plot_ui| {
                             plot_ui.line(
@@ -108,6 +108,14 @@ impl TabViewer {
     fn multi_tab(&mut self, ui: &mut egui::Ui) {
         ui.heading("Bode plots!");
     }
+
+    fn shortcuts(&mut self, ui: &mut egui::Ui) {
+        ui.heading("Shortcuts");
+        ui.label("Space: Start/Stop measurement");
+        ui.label("C: Clear plots");
+        ui.label("S: Toggle settings");
+        ui.label("CMD-W: Close window");
+    }
 }
 
 impl egui_dock::TabViewer for TabViewer {
@@ -121,6 +129,7 @@ impl egui_dock::TabViewer for TabViewer {
         match tab.as_str() {
             "Single" => self.single_tab(ui),
             "Multi" => self.multi_tab(ui),
+            "Shortcuts" => self.shortcuts(ui),
             _ => {
                 let _ = ui.label("Unknown tab");
             }
@@ -152,7 +161,7 @@ impl App {
 
         // Step 3: Construct App
         let app = App {
-            tree: DockState::new(vec!["Single".to_string(), "Multi".to_string()]),
+            tree: DockState::new(vec!["Single".to_string(), "Multi".to_string(), "Shortcuts".to_string()]),
             tab_viewer,
             run_impedancemeter_tx,
             magnitude,
@@ -255,7 +264,7 @@ impl eframe::App for App {
             ctx.send_viewport_cmd(egui::ViewportCommand::Close);
         }
 
-        // CMD- or control-W to close window
+        // Space to start/stop measurement
         if ctx.input(|i| i.key_pressed(Key::Space))
         {
             let value = *self.on.lock().unwrap();