Draw ui

custom_consumption/src/app_config.rs

@@ -0,0 +1,48 @@
+use clap::Parser;
+use std::path::{Path, PathBuf};
+
+/// Solar system central backend
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+pub struct AppConfig {
+    /// The path to the file to write to update the value
+    #[clap(short, long, default_value = "/dev/shm/consumption.txt")]
+    file_path: String,
+
+    /// Minimal value
+    #[clap( long, default_value_t = -5000)]
+    pub min: i64,
+
+    /// Maximal value
+    #[clap(long, default_value_t = 5000)]
+    pub max: i64,
+}
+
+lazy_static::lazy_static! {
+    static ref ARGS: AppConfig = {
+        AppConfig::parse()
+    };
+}
+
+impl AppConfig {
+    /// Get parsed command line arguments
+    pub fn get() -> &'static AppConfig {
+        &ARGS
+    }
+
+    /// Path to the file to update the value
+    pub fn file_path(&self) -> PathBuf {
+        Path::new(&self.file_path).to_path_buf()
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use crate::app_config::AppConfig;
+
+    #[test]
+    fn verify_cli() {
+        use clap::CommandFactory;
+        AppConfig::command().debug_assert()
+    }
+}

custom_consumption/src/lib.rs

@@ -0,0 +1 @@
+pub mod app_config;

custom_consumption/src/main.rs

@@ -0,0 +1,52 @@
+use custom_consumption::app_config::AppConfig;
+
+fn main() {
+    env_logger::init();
+
+    let options = eframe::NativeOptions {
+        viewport: egui::ViewportBuilder::default().with_inner_size([220.0, 60.0]),
+        ..Default::default()
+    };
+    eframe::run_native(
+        "Custom consumption",
+        options,
+        Box::new(|_cc| Box::<MyApp>::default()),
+    )
+    .unwrap()
+}
+
+struct MyApp {
+    consumption: i64,
+}
+
+impl Default for MyApp {
+    fn default() -> Self {
+        let mut prev_consumption = 42;
+
+        if AppConfig::get().file_path().is_file() {
+            prev_consumption = std::fs::read_to_string(AppConfig::get().file_path())
+                .unwrap_or("43".to_string())
+                .parse()
+                .unwrap_or(44)
+        }
+
+        Self {
+            consumption: prev_consumption,
+        }
+    }
+}
+
+impl eframe::App for MyApp {
+    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+        egui::CentralPanel::default().show(ctx, |ui| {
+            ui.heading("Custom consumption");
+            ui.add(
+                egui::Slider::new(
+                    &mut self.consumption,
+                    AppConfig::get().min..=AppConfig::get().max,
+                )
+                .text("W"),
+            );
+        });
+    }
+}