lutgen-studio 0.4.0

#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

#[cfg(not(target_arch = "wasm32"))]
#[derive(bpaf::Bpaf)]
#[bpaf(options, version)]
struct Cli {
    /// Verbosity level, repeat for more (ie, -vvv for maximum logging)
    #[bpaf(
        short, req_flag(()), count,
        map(|l| {
            use log::LevelFilter::*;
            [Warn, Info, Debug, Trace][l.clamp(0, 3)]
        })
    )]
    verbosity: log::LevelFilter,
    /// Image to open on startup
    #[bpaf(positional, guard(|p| p.exists(), "Image path not found"), optional)]
    input: Option<std::path::PathBuf>,
}

#[cfg(not(target_arch = "wasm32"))]
pub fn main() -> eframe::Result {
    let args = cli().run();

    env_logger::builder()
        .filter_level(args.verbosity)
        .parse_env("RUST_LOG")
        .init();

    eframe::run_native(
        "lutgen-studio",
        eframe::NativeOptions {
            viewport: egui::ViewportBuilder::default()
                .with_title("Lutgen Studio")
                .with_icon(
                    eframe::icon_data::from_png_bytes(include_bytes!("../../assets/lutgen.png"))
                        .expect("Failed to load icon"),
                ),
            persist_window: true,
            centered: true,
            ..Default::default()
        },
        Box::new(|cc| Ok(Box::new(lutgen_studio::App::new(cc, args.input)))),
    )
}

#[cfg(target_arch = "wasm32")]
pub fn main() {
    use eframe::wasm_bindgen::JsCast as _;

    // Redirect `log` message to `console.log` and friends:
    eframe::WebLogger::init(log::LevelFilter::Debug).ok();

    let web_options = eframe::WebOptions::default();

    wasm_bindgen_futures::spawn_local(async {
        let document = web_sys::window()
            .expect("No window")
            .document()
            .expect("No document");

        let canvas = document
            .get_element_by_id("the_canvas_id")
            .expect("Failed to find the_canvas_id")
            .dyn_into::<web_sys::HtmlCanvasElement>()
            .expect("the_canvas_id was not a HtmlCanvasElement");

        let start_result = eframe::WebRunner::new()
            .start(
                canvas,
                web_options,
                Box::new(|cc| Ok(Box::new(lutgen_studio::App::new(cc, None)))),
            )
            .await;

        // Remove the loading text and spinner:
        if let Some(loading_text) = document.get_element_by_id("loading_text") {
            match start_result {
                Ok(_) => {
                    loading_text.remove();
                },
                Err(e) => {
                    loading_text.set_inner_html(
                        "<p> The app has crashed. See the developer console for details. </p>",
                    );
                    panic!("Failed to start eframe: {e:?}");
                },
            }
        }
    });
}