Initial commit

src/app.rs

@@ -0,0 +1,116 @@
+/// 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 TemplateApp {
+    // Example stuff:
+    label: String,
+
+    // this how you opt-out of serialization of a member
+    #[serde(skip)]
+    value: f32,
+}
+
+impl Default for TemplateApp {
+    fn default() -> Self {
+        Self {
+            // Example stuff:
+            label: "Hello World!".to_owned(),
+            value: 2.7,
+        }
+    }
+}
+
+impl TemplateApp {
+    /// Called once before the first frame.
+    pub fn new(cc: &eframe::CreationContext<'_>) -> Self {
+        // This is also where you can customized the look at 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 TemplateApp {
+    /// 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.
+    /// Put your widgets into a `SidePanel`, `TopPanel`, `CentralPanel`, `Window` or `Area`.
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        let Self { label, value } = self;
+
+        // Examples of how to create different panels and windows.
+        // Pick whichever suits you.
+        // Tip: a good default choice is to just keep the `CentralPanel`.
+        // For inspiration and more examples, go to https://emilk.github.io/egui
+
+        #[cfg(not(target_arch = "wasm32"))] // no File->Quit on web pages!
+        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| {
+                ui.menu_button("File", |ui| {
+                    if ui.button("Quit").clicked() {
+                        _frame.close();
+                    }
+                });
+            });
+        });
+
+        egui::SidePanel::left("side_panel").show(ctx, |ui| {
+            ui.heading("Side Panel");
+
+            ui.horizontal(|ui| {
+                ui.label("Write something: ");
+                ui.text_edit_singleline(label);
+            });
+
+            ui.add(egui::Slider::new(value, 0.0..=10.0).text("value"));
+            if ui.button("Increment").clicked() {
+                *value += 1.0;
+            }
+
+            ui.with_layout(egui::Layout::bottom_up(egui::Align::LEFT), |ui| {
+                ui.horizontal(|ui| {
+                    ui.spacing_mut().item_spacing.x = 0.0;
+                    ui.label("powered by ");
+                    ui.hyperlink_to("egui", "https://github.com/emilk/egui");
+                    ui.label(" and ");
+                    ui.hyperlink_to(
+                        "eframe",
+                        "https://github.com/emilk/egui/tree/master/crates/eframe",
+                    );
+                    ui.label(".");
+                });
+            });
+        });
+
+        egui::CentralPanel::default().show(ctx, |ui| {
+            // The central panel the region left after adding TopPanel's and SidePanel's
+
+            ui.heading("eframe template");
+            ui.hyperlink("https://github.com/emilk/eframe_template");
+            ui.add(egui::github_link_file!(
+                "https://github.com/emilk/eframe_template/blob/master/",
+                "Source code."
+            ));
+            egui::warn_if_debug_build(ui);
+        });
+
+        if false {
+            egui::Window::new("Window").show(ctx, |ui| {
+                ui.label("Windows can be moved by dragging them.");
+                ui.label("They are automatically sized based on contents.");
+                ui.label("You can turn on resizing and scrolling if you like.");
+                ui.label("You would normally chose either panels OR windows.");
+            });
+        }
+    }
+}

src/lib.rs

@@ -0,0 +1,4 @@
+#![warn(clippy::all, rust_2018_idioms)]
+
+mod app;
+pub use app::TemplateApp;

src/main.rs

@@ -0,0 +1,34 @@
+#![warn(clippy::all, rust_2018_idioms)]
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
+// When compiling natively:
+#[cfg(not(target_arch = "wasm32"))]
+fn main() {
+    // Log to stdout (if you run with `RUST_LOG=debug`).
+    tracing_subscriber::fmt::init();
+
+    let native_options = eframe::NativeOptions::default();
+    eframe::run_native(
+        "eframe template",
+        native_options,
+        Box::new(|cc| Box::new(eframe_template::TemplateApp::new(cc))),
+    );
+}
+
+// when compiling to web using trunk.
+#[cfg(target_arch = "wasm32")]
+fn main() {
+    // Make sure panics are logged using `console.error`.
+    console_error_panic_hook::set_once();
+
+    // Redirect tracing to console.log and friends:
+    tracing_wasm::set_as_global_default();
+
+    let web_options = eframe::WebOptions::default();
+    eframe::start_web(
+        "the_canvas_id", // hardcode it
+        web_options,
+        Box::new(|cc| Box::new(eframe_template::TemplateApp::new(cc))),
+    )
+    .expect("failed to start eframe");
+}