Mercurial > core / rust/ui/alik/src/lib.rs

 //! alik/src/lib.rs --- Alik UI library
 
 //
 
 //! Code:
 
 // We derive Deserialize/Serialize so we can persist app state on shutdown.
 #[derive(serde::Deserialize, serde::Serialize)]
 #[serde(default)] // if we add new fields, give them default values when deserializing old state
 pub struct AlikApp {
   // Example stuff:
   label: String,
 
   #[serde(skip)] // This how you opt-out of serialization of a field
   value: f32,
 }
 
 impl Default for AlikApp {
   fn default() -> Self {
     Self {
       // Example stuff:
       label: "Hello World!".to_owned(),
       value: 2.7,
     }
   }
 }
 
 impl AlikApp {
   /// Called once before the first frame.
   pub fn new(cc: &eframe::CreationContext<'_>) -> Self {
     // This is also where you can customize the look and feel of egui using
     // `cc.egui_ctx.set_visuals` and `cc.egui_ctx.set_fonts`.
 
     // Load previous app state (if any).
     // Note that you must enable the `persistence` feature for this to work.
     if let Some(storage) = cc.storage {
       return eframe::get_value(storage, eframe::APP_KEY).unwrap_or_default();
     }
 
     Default::default()
   }
 }
 
 impl eframe::App for AlikApp {
   /// Called by the frame work to save state before shutdown.
   fn save(&mut self, storage: &mut dyn eframe::Storage) {
     eframe::set_value(storage, eframe::APP_KEY, self);
   }
 
   /// Called each time the UI needs repainting, which may be many times per
   /// second.
   fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
     // Put your widgets into a `SidePanel`, `TopBottomPanel`, `CentralPanel`,
     // `Window` or `Area`. For inspiration and more examples, go to https://emilk.github.io/egui
 
     egui::TopBottomPanel::top("top_panel").show(ctx, |ui| {
       // The top panel is often a good place for a menu bar:
 
       egui::menu::bar(ui, |ui| {
         // NOTE: no File->Quit on web pages!
         let is_web = cfg!(target_arch = "wasm32");
         if !is_web {
           ui.menu_button("File", |ui| {
             if ui.button("Quit").clicked() {
               ctx.send_viewport_cmd(egui::ViewportCommand::Close);
             }
           });
           ui.add_space(16.0);
         }
 
         egui::widgets::global_dark_light_mode_buttons(ui);
       });
     });
 
     egui::CentralPanel::default().show(ctx, |ui| {
       // The central panel the region left after adding TopPanel's and
       // SidePanel's
       ui.heading("alik");
 
       ui.horizontal(|ui| {
         ui.label("query: ");
         ui.text_edit_singleline(&mut self.label);
       });
 
       ui.add(egui::Slider::new(&mut self.value, 0.0..=10.0).text("val"));
       if ui.button("inc").clicked() {
         self.value += 1.0;
       }
 
       ui.separator();
 
       ui.add(egui::github_link_file!(
         "https://vc.compiler.company/comp/core/-/blob/branch/default/rust/",
         "Source code."
       ));
 
       ui.with_layout(egui::Layout::bottom_up(egui::Align::LEFT), |ui| {
         egui::warn_if_debug_build(ui);
       });
     });
   }
 }