112 lines
3.8 KiB
Rust
112 lines
3.8 KiB
Rust
use eframe::{egui, epi};
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/// We derive Deserialize/Serialize so we can persist app state on shutdown.
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#[cfg_attr(feature = "persistence", derive(serde::Deserialize, serde::Serialize))]
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#[cfg_attr(feature = "persistence", serde(default))] // if we add new fields, give them default values when deserializing old state
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pub struct TemplateApp {
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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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#[cfg_attr(feature = "persistence", serde(skip))]
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value: f32,
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}
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impl Default for TemplateApp {
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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 epi::App for TemplateApp {
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fn name(&self) -> &str {
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"egui template"
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}
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/// Called by the framework to load old app state (if any).
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#[cfg(feature = "persistence")]
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fn setup(
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&mut self,
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_ctx: &egui::CtxRef,
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_frame: &mut epi::Frame<'_>,
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storage: Option<&dyn epi::Storage>,
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) {
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if let Some(storage) = storage {
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*self = epi::get_value(storage, epi::APP_KEY).unwrap_or_default()
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}
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}
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/// Called by the frame work to save state before shutdown.
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#[cfg(feature = "persistence")]
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fn save(&mut self, storage: &mut dyn epi::Storage) {
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epi::set_value(storage, epi::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::CtxRef, frame: &mut epi::Frame<'_>) {
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let Self { label, value } = self;
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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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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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egui::menu::menu(ui, "File", |ui| {
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if ui.button("Quit").clicked() {
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frame.quit();
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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| {
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ui.heading("Side Panel");
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ui.horizontal(|ui| {
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ui.label("Write something: ");
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ui.text_edit_singleline(label);
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});
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ui.add(egui::Slider::new(value, 0.0..=10.0).text("value"));
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if ui.button("Increment").clicked() {
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*value += 1.0;
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}
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ui.with_layout(egui::Layout::bottom_up(egui::Align::Center), |ui| {
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ui.add(
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egui::Hyperlink::new("https://github.com/emilk/egui/").text("powered by egui"),
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);
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});
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});
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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("egui template");
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ui.hyperlink("https://github.com/emilk/egui_template");
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ui.add(egui::github_link_file!(
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"https://github.com/emilk/egui_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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