add built-in airhorn alarm sound

src/cli.rs

@@ -1,3 +1,5 @@
+use std::ffi::OsString;
+
 use clap::Parser;
 
 #[derive(Debug, Parser)]
@@ -17,7 +19,10 @@ pub struct Cli {
 
     /// Audio file to play at the end of the countdown.
     #[clap(long, short)]
-    pub alarm: Option<String>,
+    pub alarm: Option<OsString>,
+
+    #[clap(short = 'A', conflicts_with = "alarm")]
+    pub airhorn: bool,
 
     /// Begin countdown immediately.
     #[clap(long = "immediate", long = "running", short = 'i', short = 'r')]

src/lib.rs

@@ -1,3 +1,14 @@
+use std::ffi::OsString;
+
+pub const AIRHORN: &[u8] = include_bytes!("../airhorn_alarm.mp3");
+pub const PREDATOR_FONT: &[u8] = include_bytes!("../Predator.ttf");
+
 pub mod cli;
 pub mod timer;
 mod util;
+
+#[derive(Debug, Clone)]
+pub(crate) enum Alarm {
+    Airhon,
+    User(OsString),
+}

src/main.rs

@@ -4,7 +4,8 @@ use katabastird::timer::Timer;
 fn main() {
     let options = eframe::NativeOptions {
         renderer: eframe::Renderer::Wgpu,
-        initial_window_size: Some(Vec2::new(1400.0, 800.0)),
+        max_window_size: Some(Vec2::new(1400.0, 800.0)),
+        min_window_size: Some(Vec2::new(966.0, 600.0)),
         ..Default::default()
     };
 

src/timer.rs

@@ -5,10 +5,10 @@ use eframe::{App, CreationContext};
 use egui::{Color32, Direction, FontId, Layout, RichText, Ui};
 use egui_extras::{Size, StripBuilder};
 
-use crate::{cli::Cli, util::*};
+use crate::{cli::Cli, util::*, Alarm, PREDATOR_FONT};
 
-const MIN_REPAINT: Duration = Duration::from_millis(200); // one frame before 200ms
-const MAX_REPAINT: Duration = Duration::from_millis(500);
+const MIN_REPAINT: Duration = Duration::from_millis(100);
+const MAX_REPAINT: Duration = Duration::from_millis(250);
 
 const DIGIT_FACTOR: f32 = 0.4;
 const TEXT_FACTOR: f32 = 0.2;
@@ -25,7 +25,7 @@ pub struct Timer {
     duration: Duration,
     state: TimerState,
     tstart: Instant, // so we can blink
-    alarm: Option<String>,
+    alarm: Option<Alarm>,
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -67,9 +67,9 @@ impl App for Timer {
                     let dur = Instant::now() - cs.updated;
                     let dur = MIN_REPAINT.saturating_sub(dur);
                     ctx.request_repaint_after(dur);
-                    self.running(ui, height);
+                    self.running(ui, height, cs);
                 }
-                TimerState::Paused(_) => self.paused(ui, height),
+                TimerState::Paused(cs) => self.paused(ui, height, cs),
                 TimerState::Finished => self.finished(ui, height),
             }
             // check for quit key
@@ -95,11 +95,19 @@ impl Timer {
             CountDirection::Down
         };
 
+        let alarm = if let Some(path) = cli.alarm {
+            Some(Alarm::User(path))
+        } else if cli.airhorn {
+            Some(Alarm::Airhon)
+        } else {
+            None
+        };
+
         if predator {
             let mut fonts = egui::FontDefinitions::default();
             fonts.font_data.insert(
                 "predator".to_owned(),
-                egui::FontData::from_static(include_bytes!("../Predator.ttf")),
+                egui::FontData::from_static(PREDATOR_FONT),
             );
             fonts
                 .families
@@ -114,7 +122,7 @@ impl Timer {
             direction,
             state: TimerState::Unstarted,
             tstart: Instant::now(),
-            alarm: cli.alarm,
+            alarm,
         };
         if cli.running {
             let cs = ChronoState {
@@ -150,23 +158,15 @@ impl Timer {
             });
     }
 
-    fn running(&mut self, ui: &mut Ui, size: f32) {
+    fn running(&mut self, ui: &mut Ui, size: f32, cs: ChronoState) {
         let tsize = size * TEXT_FACTOR;
         let text = RichText::new("PAUSE")
             .font(FontId::monospace(tsize))
             .color(Color32::GOLD);
 
-        let elapsed;
-        let remaining;
         let mut is_paused = false;
-        if let TimerState::Running(rs) = self.state {
-            elapsed = Instant::now() - rs.updated;
-            remaining = rs.remaining;
-        } else {
-            unreachable!()
-        }
-
-        let remaining = remaining.saturating_sub(elapsed);
+        let elapsed = Instant::now() - cs.updated;
+        let remaining = cs.remaining.saturating_sub(elapsed);
 
         StripBuilder::new(ui)
             .size(Size::relative(0.3333))
@@ -216,17 +216,11 @@ impl Timer {
         }
     }
 
-    fn paused(&mut self, ui: &mut Ui, vsize: f32) {
-        let elapsed;
+    fn paused(&mut self, ui: &mut Ui, vsize: f32, cs: ChronoState) {
         let mut is_running = false;
         let tsize = vsize * TEXT_FACTOR;
-        if let TimerState::Paused(cs) = self.state {
-            elapsed = cs.remaining;
-        } else {
-            unreachable!()
-        }
 
-        let remaining = elapsed;
+        let remaining = cs.remaining;
         StripBuilder::new(ui)
             .size(Size::relative(0.33333))
             .size(Size::remainder())

src/util.rs

@@ -1,7 +1,15 @@
-use std::time::Duration;
+use std::{
+    ffi::OsStr,
+    fs::File,
+    io::{Cursor, Read, Seek},
+    time::Duration,
+};
 
 use egui::{Color32, Direction, FontId, Layout, RichText};
 use egui_extras::{Size, Strip};
+use rodio::{source::Source, Decoder, OutputStream};
+
+use crate::{Alarm, AIRHORN};
 
 fn format_digits(digits: u64, size: f32, color: Color32) -> RichText {
     RichText::new(format!("{:02}", digits))
@@ -9,14 +17,29 @@ fn format_digits(digits: u64, size: f32, color: Color32) -> RichText {
         .color(color)
 }
 
-pub fn alarm(path: String) {
-    use rodio::{source::Source, Decoder, OutputStream};
-    use std::fs::File;
-    use std::io::BufReader;
+pub(crate) fn alarm(source: Alarm) {
+    if let Alarm::User(path) = source {
+        play_user(&path)
+    } else {
+        let source = Cursor::new(AIRHORN.to_owned());
+        let decoder = Decoder::new(source).unwrap();
+        play_alarm(decoder);
+    }
+}
 
-    let (_stream, stream_handle) = OutputStream::try_default().unwrap();
-    let file = BufReader::new(File::open(path).unwrap());
+fn play_user(path: &OsStr) {
+    let mut f = File::open(path).unwrap_or_else(|_| panic!("Could not open file {:?}", path));
+    let metadata = std::fs::metadata(path).expect("unable to read metadata");
+    let mut buffer = vec![0; metadata.len() as usize];
+    f.read_exact(&mut buffer).expect("buffer overflow");
+    let file = Cursor::new(buffer);
     let source = Decoder::new(file).unwrap();
+    play_alarm(source);
+}
+
+fn play_alarm<S: Read + Seek + Send + 'static>(source: Decoder<S>) {
+    let (_stream, stream_handle) = OutputStream::try_default().unwrap();
+
     let dur = if let Some(dur) = source.total_duration() {
         dur
     } else {