117 lines
4.0 KiB
Rust
117 lines
4.0 KiB
Rust
/// We derive Deserialize/Serialize so we can persist app state on shutdown.
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#[derive(serde::Deserialize, serde::Serialize)]
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#[serde(default)] // if we add new fields, give them default values when deserializing old state
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pub struct Damus {
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// Example stuff:
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label: String,
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// this how you opt-out of serialization of a member
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#[serde(skip)]
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value: f32,
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}
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impl Default for Damus {
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fn default() -> Self {
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Self {
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// Example stuff:
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label: "Hello World!".to_owned(),
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value: 2.7,
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}
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}
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}
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impl Damus {
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/// Called once before the first frame.
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pub fn new(cc: &eframe::CreationContext<'_>) -> Self {
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// This is also where you can customized the look at feel of egui using
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// `cc.egui_ctx.set_visuals` and `cc.egui_ctx.set_fonts`.
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// Load previous app state (if any).
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// Note that you must enable the `persistence` feature for this to work.
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if let Some(storage) = cc.storage {
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return eframe::get_value(storage, eframe::APP_KEY).unwrap_or_default();
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}
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Default::default()
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}
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}
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fn timeline_view(app: &mut Damus, ui: &mut egui::Ui) {
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ui.heading("Timeline");
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ui.horizontal(|ui| {
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ui.label("Write something: ");
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ui.text_edit_singleline(&mut app.label);
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});
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ui.add(egui::Slider::new(&mut app.value, 0.0..=10.0).text("value"));
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if ui.button("Increment").clicked() {
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app.value += 1.0;
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}
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ui.with_layout(egui::Layout::bottom_up(egui::Align::LEFT), |ui| {
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ui.horizontal(|ui| {
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ui.spacing_mut().item_spacing.x = 0.0;
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ui.label("powered by ");
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ui.hyperlink_to("egui", "https://github.com/emilk/egui");
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ui.label(" and ");
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ui.hyperlink_to(
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"eframe",
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"https://github.com/emilk/egui/tree/master/crates/eframe",
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);
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ui.label(".");
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});
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});
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}
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impl eframe::App for Damus {
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/// Called by the frame work to save state before shutdown.
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fn save(&mut self, storage: &mut dyn eframe::Storage) {
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eframe::set_value(storage, eframe::APP_KEY, self);
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}
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/// Called each time the UI needs repainting, which may be many times per second.
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/// Put your widgets into a `SidePanel`, `TopPanel`, `CentralPanel`, `Window` or `Area`.
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fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
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// Examples of how to create different panels and windows.
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// Pick whichever suits you.
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// Tip: a good default choice is to just keep the `CentralPanel`.
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// For inspiration and more examples, go to https://emilk.github.io/egui
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#[cfg(not(target_arch = "wasm32"))] // no File->Quit on web pages!
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egui::TopBottomPanel::top("top_panel").show(ctx, |ui| {
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// The top panel is often a good place for a menu bar:
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egui::menu::bar(ui, |ui| {
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ui.menu_button("File", |ui| {
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if ui.button("Quit").clicked() {
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_frame.close();
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}
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});
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});
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});
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egui::SidePanel::left("side_panel").show(ctx, |ui| timeline_view(self, ui));
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egui::CentralPanel::default().show(ctx, |ui| {
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// The central panel the region left after adding TopPanel's and SidePanel's
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ui.heading("eframe template");
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ui.hyperlink("https://github.com/emilk/eframe_template");
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ui.add(egui::github_link_file!(
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"https://github.com/emilk/eframe_template/blob/master/",
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"Source code."
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));
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egui::warn_if_debug_build(ui);
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});
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if false {
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egui::Window::new("Window").show(ctx, |ui| {
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ui.label("Windows can be moved by dragging them.");
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ui.label("They are automatically sized based on contents.");
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ui.label("You can turn on resizing and scrolling if you like.");
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ui.label("You would normally chose either panels OR windows.");
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});
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}
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}
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}
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