Basic renrs-gui implementation

renrs-gui/.gitignore

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+/target
+Cargo.lock

renrs-gui/Cargo.toml

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+[package]
+name = "renrs-gui"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+eframe = "0.21.3"
+env_logger = "0.10.0"
+renrs = { path = "../renrs" }

renrs-gui/src/lib.rs

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+use std::path::PathBuf;
+
+use eframe::egui;
+use egui::*;
+use renrs::{State, Command};
+
+pub fn run(file: PathBuf) -> Result<(), eframe::Error> {
+    env_logger::init();
+    let options = eframe::NativeOptions {
+        initial_window_size: Some(egui::vec2(640.0, 480.0)),
+        resizable: false, // prevent i3 from automatically resizing
+        ..Default::default()
+    };
+    eframe::run_native(
+        "renrs-gui", 
+        options,
+        Box::new(|_cc| Box::new(
+            App::from_state(State::from_file(file))
+        )),
+    )
+}
+
+struct App {
+    state: State,
+    text: String,
+}
+
+impl App {
+    fn from_state(state: State) -> Self {
+        let mut app = Self {
+            state,
+            text: "".to_owned(),
+        };
+        app.next();
+        app
+    }
+
+    fn next(&mut self) {
+        if let Some(Command::Say { name, text }) = self.state.next_command() {
+            self.text = match name {
+                Some(name) => format!("{name}: {text}"),
+                None => text,
+            }
+        }
+    }
+}
+
+impl eframe::App for App {
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        egui::CentralPanel::default().show(ctx, |ui| {
+            if ctx.input(|i|
+                i.key_pressed(Key::Space)
+                || i.pointer.button_clicked(PointerButton::Primary)
+            ) {
+                self.next();
+            }
+            ui.label(&self.text);
+        });
+    }
+}