feat: add uptime to title

it will be displayed somewhere else later,
hopefully with better formatting too.

src/app/mod.rs

@@ -1,3 +1,5 @@
+use std::time::Duration;
+
 use iced::{
     Color, Element, Length, Renderer, Task, Theme, application, futures::SinkExt, stream, theme,
     widget,
@@ -14,6 +16,8 @@ enum Message {
 
 #[derive(Default)]
 struct State {
+    uptime: Duration,
+
     total_cpu_graph: Graph,
     cpu_graphs: Vec<Graph>,
     memory_graph: Graph,
@@ -47,6 +51,8 @@ impl State {
     fn update(&mut self, message: Message) -> Task<Message> {
         match message {
             Message::Info(snapshot) => {
+                self.uptime = snapshot.uptime();
+
                 self.total_cpu_graph.update(snapshot.cpu_total);
 
                 self.memory_graph
@@ -103,10 +109,15 @@ impl State {
         ])
         .into()
     }
+
+    fn title(&self) -> String {
+        format!("itop {:?}", self.uptime)
+    }
 }
 
 pub fn run() -> Result<(), impl std::error::Error> {
     application(State::new, State::update, State::view)
+        .title(State::title)
         .theme(theme::Theme::custom(
             "high-contrast-dark",
             theme::Palette {

src/sysinfo_snapshot.rs

@@ -1,5 +1,9 @@
+use std::time::Duration;
+
 #[derive(Clone, Debug)]
 pub struct SysinfoSnapshot {
+    uptime: u64,
+
     pub cpu_total: f32,
     pub cpus: Vec<f32>,
 
@@ -8,10 +12,17 @@ pub struct SysinfoSnapshot {
     pub swap: u64,
     pub swap_total: u64,
 }
+impl SysinfoSnapshot {
+    pub fn uptime(&self) -> Duration {
+        Duration::from_secs(self.uptime)
+    }
+}
 
 impl From<&sysinfo::System> for SysinfoSnapshot {
     fn from(value: &sysinfo::System) -> Self {
         Self {
+            uptime: sysinfo::System::uptime(),
+
             cpu_total: value.global_cpu_usage(),
             cpus: value.cpus().iter().map(|cpu| cpu.cpu_usage()).collect(),