126 lines
3.6 KiB
Rust
126 lines
3.6 KiB
Rust
use egui_file::FileDialog;
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/// 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 TemplateApp {
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// Example stuff:
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label: String,
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#[serde(skip)] // This how you opt-out of serialization of a field
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value: f32,
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#[serde(skip)]
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file_dialog: Option<FileDialog>,
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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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file_dialog: None,
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}
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}
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}
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impl TemplateApp {
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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 customize the look and 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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eframe::get_value(storage, eframe::APP_KEY).unwrap_or_default()
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} else {
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Default::default()
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}
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}
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}
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impl eframe::App for TemplateApp {
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/// Called by the framework 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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fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
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// Put your widgets into a `SidePanel`, `TopBottomPanel`, `CentralPanel`, `Window` or `Area`.
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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::MenuBar::new().ui(ui, |ui| {
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// NOTE: no File->Quit on web pages!
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let is_web = cfg!(target_arch = "wasm32");
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if !is_web {
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ui.menu_button("File", |ui| {
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if ui.button("Quit").clicked() {
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ctx.send_viewport_cmd(egui::ViewportCommand::Close);
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}
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});
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ui.add_space(16.0);
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}
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egui::widgets::global_theme_preference_buttons(ui);
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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("eframe template");
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ui.horizontal(|ui| {
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ui.label("Write something: ");
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ui.text_edit_singleline(&mut self.label);
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});
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if ui.button("Open File").clicked() {
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let mut dialog = FileDialog::open_file(None);
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dialog.open();
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self.file_dialog = Some(dialog);
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}
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ui.add(egui::Slider::new(&mut self.value, 0.0..=10.0).text("value"));
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if ui.button("Increment").clicked() {
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self.value += 1.0;
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}
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ui.separator();
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if let Some(dialog) = &mut self.file_dialog {
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dialog.pick_file()
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}
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ui.add(egui::github_link_file!(
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"https://github.com/emilk/eframe_template/blob/main/",
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"Source code."
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));
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ui.with_layout(egui::Layout::bottom_up(egui::Align::LEFT), |ui| {
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powered_by_egui_and_eframe(ui);
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egui::warn_if_debug_build(ui);
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});
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});
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}
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}
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fn powered_by_egui_and_eframe(ui: &mut egui::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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