feature/scroll-animation

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "fluxo-rs"
-version = "0.4.2"
+version = "0.4.3"
 edition = "2024"
 
 [features]

example.config.toml

@@ -93,6 +93,10 @@ format_inactive = "<span size='large'></span>"
 
 [mpris]
 # enabled = false  # set to false to disable this module at runtime
+# max_length = 30          # truncate text beyond this character length (adds '...')
+# scroll = true            # enable marquee scroll animation (requires max_length)
+# scroll_speed = 500       # ms between scroll steps (only while playing)
+# scroll_separator = " /// "  # separator shown between loops when scrolling
 # tokens: {artist}, {title}, {album}, {status_icon}
 format = "{status_icon} {artist} - {title}"
 

src/config.rs

@@ -290,6 +290,22 @@ pub struct MprisConfig {
     #[serde(default = "default_true")]
     pub enabled: bool,
     pub format: String,
+    #[serde(default)]
+    pub max_length: Option<usize>,
+    #[serde(default)]
+    pub scroll: bool,
+    #[serde(default = "default_scroll_speed")]
+    pub scroll_speed: u64,
+    #[serde(default = "default_scroll_separator")]
+    pub scroll_separator: String,
+}
+
+fn default_scroll_speed() -> u64 {
+    500
+}
+
+fn default_scroll_separator() -> String {
+    " /// ".to_string()
 }
 
 impl Default for MprisConfig {
@@ -297,6 +313,10 @@ impl Default for MprisConfig {
         Self {
             enabled: true,
             format: "{status_icon} {artist} - {title}".to_string(),
+            max_length: None,
+            scroll: false,
+            scroll_speed: 500,
+            scroll_separator: " /// ".to_string(),
         }
     }
 }

src/daemon.rs

@@ -78,6 +78,10 @@ pub async fn run_daemon(config_path: Option<PathBuf>) -> Result<()> {
     let (keyboard_tx, keyboard_rx) = watch::channel(Default::default());
     #[cfg(feature = "mod-dbus")]
     let (dnd_tx, dnd_rx) = watch::channel(Default::default());
+    #[cfg(feature = "mod-dbus")]
+    let mpris_scroll = Arc::new(RwLock::new(crate::state::MprisScrollState::default()));
+    #[cfg(feature = "mod-dbus")]
+    let (mpris_scroll_tick_tx, mpris_scroll_tick_rx) = watch::channel(0u64);
     let health = Arc::new(RwLock::new(HashMap::new()));
     #[cfg(feature = "mod-bt")]
     let (bt_force_tx, mut bt_force_rx) = mpsc::channel(1);
@@ -109,6 +113,10 @@ pub async fn run_daemon(config_path: Option<PathBuf>) -> Result<()> {
         keyboard: keyboard_rx,
         #[cfg(feature = "mod-dbus")]
         dnd: dnd_rx,
+        #[cfg(feature = "mod-dbus")]
+        mpris_scroll: Arc::clone(&mpris_scroll),
+        #[cfg(feature = "mod-dbus")]
+        mpris_scroll_tick: mpris_scroll_tick_rx,
         health: Arc::clone(&health),
         #[cfg(feature = "mod-bt")]
         bt_force_poll: bt_force_tx,
@@ -313,6 +321,20 @@ pub async fn run_daemon(config_path: Option<PathBuf>) -> Result<()> {
     if config.read().await.mpris.enabled {
         let mpris_daemon = MprisDaemon::new();
         mpris_daemon.start(mpris_tx);
+
+        // Scroll ticker for MPRIS marquee animation
+        let scroll_config = Arc::clone(&config);
+        let scroll_rx = receivers.mpris.clone();
+        let scroll_state = Arc::clone(&mpris_scroll);
+        tokio::spawn(async move {
+            crate::modules::mpris::mpris_scroll_ticker(
+                scroll_config,
+                scroll_rx,
+                scroll_state,
+                mpris_scroll_tick_tx,
+            )
+            .await;
+        });
     }
 
     // 6. Waybar Signaler Task

src/modules/mpris.rs

@@ -2,12 +2,66 @@ use crate::config::Config;
 use crate::error::Result;
 use crate::modules::WaybarModule;
 use crate::output::WaybarOutput;
-use crate::state::{AppReceivers, MprisState};
+use crate::state::{AppReceivers, MprisScrollState, MprisState};
 use crate::utils::{TokenValue, format_template};
-use tokio::sync::watch;
+use std::sync::Arc;
+use tokio::sync::{RwLock, watch};
+use tokio::time::Duration;
 use tracing::{debug, info};
 use zbus::{Connection, proxy};
 
+fn format_mpris_text(format: &str, mpris: &MprisState) -> (String, &'static str) {
+    let status_icon = if mpris.is_playing {
+        "󰏤"
+    } else if mpris.is_paused {
+        "󰐊"
+    } else {
+        "󰓛"
+    };
+
+    let class = if mpris.is_playing {
+        "playing"
+    } else if mpris.is_paused {
+        "paused"
+    } else {
+        "stopped"
+    };
+
+    let text = format_template(
+        format,
+        &[
+            ("artist", TokenValue::String(mpris.artist.clone())),
+            ("title", TokenValue::String(mpris.title.clone())),
+            ("album", TokenValue::String(mpris.album.clone())),
+            ("status_icon", TokenValue::String(status_icon.to_string())),
+        ],
+    );
+
+    (text, class)
+}
+
+fn apply_scroll_window(full_text: &str, max_len: usize, offset: usize, separator: &str) -> String {
+    let char_count = full_text.chars().count();
+    let total_len = char_count + separator.chars().count();
+    let offset = offset % total_len;
+    full_text
+        .chars()
+        .chain(separator.chars())
+        .cycle()
+        .skip(offset)
+        .take(max_len)
+        .collect()
+}
+
+fn truncate_with_ellipsis(text: &str, max_len: usize) -> String {
+    let char_count = text.chars().count();
+    if char_count <= max_len {
+        return text.to_string();
+    }
+    let truncated: String = text.chars().take(max_len.saturating_sub(3)).collect();
+    format!("{}...", truncated)
+}
+
 pub struct MprisModule;
 
 impl WaybarModule for MprisModule {
@@ -28,32 +82,26 @@ impl WaybarModule for MprisModule {
             });
         }
 
-        let status_icon = if mpris.is_playing {
-            "󰏤"
-        } else if mpris.is_paused {
-            "󰐊"
-        } else {
-            "󰓛"
-        };
+        let (full_text, class) = format_mpris_text(&config.mpris.format, &mpris);
 
-        let class = if mpris.is_playing {
-            "playing"
-        } else if mpris.is_paused {
-            "paused"
+        let text = if config.mpris.scroll {
+            if let Some(max_len) = config.mpris.max_length {
+                let scroll = state.mpris_scroll.read().await;
+                apply_scroll_window(
+                    &full_text,
+                    max_len,
+                    scroll.offset,
+                    &config.mpris.scroll_separator,
+                )
+            } else {
+                full_text.clone()
+            }
+        } else if let Some(max_len) = config.mpris.max_length {
+            truncate_with_ellipsis(&full_text, max_len)
         } else {
-            "stopped"
+            full_text.clone()
         };
 
-        let text = format_template(
-            &config.mpris.format,
-            &[
-                ("artist", TokenValue::String(mpris.artist.clone())),
-                ("title", TokenValue::String(mpris.title.clone())),
-                ("album", TokenValue::String(mpris.album.clone())),
-                ("status_icon", TokenValue::String(status_icon.to_string())),
-            ],
-        );
-
         Ok(WaybarOutput {
             text,
             tooltip: Some(format!("{} - {}", mpris.artist, mpris.title)),
@@ -63,6 +111,54 @@ impl WaybarModule for MprisModule {
     }
 }
 
+pub async fn mpris_scroll_ticker(
+    config: Arc<RwLock<Config>>,
+    mut mpris_rx: watch::Receiver<MprisState>,
+    scroll_state: Arc<RwLock<MprisScrollState>>,
+    tick_tx: watch::Sender<u64>,
+) {
+    let mut generation: u64 = 0;
+    let mut last_track_key = String::new();
+
+    loop {
+        let mpris = mpris_rx.borrow_and_update().clone();
+        let cfg = config.read().await;
+        let scroll_enabled = cfg.mpris.scroll;
+        let has_max_length = cfg.mpris.max_length.is_some();
+        let scroll_speed = cfg.mpris.scroll_speed;
+        let format_str = cfg.mpris.format.clone();
+        drop(cfg);
+
+        let (full_text, _) = format_mpris_text(&format_str, &mpris);
+        let track_key = format!("{}|{}|{}", mpris.artist, mpris.title, mpris.album);
+
+        if track_key != last_track_key {
+            let mut state = scroll_state.write().await;
+            state.offset = 0;
+            state.full_text = full_text.clone();
+            last_track_key = track_key;
+            generation += 1;
+            let _ = tick_tx.send(generation);
+        }
+
+        if scroll_enabled && has_max_length && mpris.is_playing {
+            tokio::time::sleep(Duration::from_millis(scroll_speed)).await;
+            let mut state = scroll_state.write().await;
+            state.offset += 1;
+            state.full_text = full_text;
+            drop(state);
+            generation += 1;
+            let _ = tick_tx.send(generation);
+            continue;
+        }
+
+        // Not scrolling — wait for next state change
+        if mpris_rx.changed().await.is_err() {
+            break;
+        }
+    }
+}
+
 pub struct MprisDaemon;
 
 #[proxy(

src/signaler.rs

@@ -175,6 +175,13 @@ impl WaybarSignaler {
             #[cfg(feature = "mod-dbus")]
             let mpris_changed = receivers.mpris.changed();
 
+            #[cfg(not(feature = "mod-dbus"))]
+            let mpris_scroll_tick_changed = std::future::pending::<
+                std::result::Result<(), tokio::sync::watch::error::RecvError>,
+            >();
+            #[cfg(feature = "mod-dbus")]
+            let mpris_scroll_tick_changed = receivers.mpris_scroll_tick.changed();
+
             tokio::select! {
                 res = net_changed, if signals.network.is_some() => {
                     if res.is_ok() { check_and_signal!("net", signals.network); }
@@ -215,6 +222,10 @@ impl WaybarSignaler {
                 res = mpris_changed, if signals.mpris.is_some() => {
                     if res.is_ok() { check_and_signal!("mpris", signals.mpris); }
                 }
+                res = mpris_scroll_tick_changed, if signals.mpris.is_some() => {
+                    if res.is_ok()
+                        && let Some(sig) = signals.mpris { self.send_signal(sig); }
+                }
                 _ = sleep(Duration::from_secs(5)) => {
                     // loop and refresh config
                 }

src/state.rs

@@ -30,6 +30,10 @@ pub struct AppReceivers {
     pub keyboard: watch::Receiver<KeyboardState>,
     #[cfg(feature = "mod-dbus")]
     pub dnd: watch::Receiver<DndState>,
+    #[cfg(feature = "mod-dbus")]
+    pub mpris_scroll: Arc<RwLock<MprisScrollState>>,
+    #[cfg(feature = "mod-dbus")]
+    pub mpris_scroll_tick: watch::Receiver<u64>,
     pub health: Arc<RwLock<HashMap<String, ModuleHealth>>>,
     #[cfg(feature = "mod-bt")]
     pub bt_force_poll: mpsc::Sender<()>,
@@ -169,6 +173,12 @@ pub struct BacklightState {
     pub percentage: u8,
 }
 
+#[derive(Default, Clone)]
+pub struct MprisScrollState {
+    pub offset: usize,
+    pub full_text: String,
+}
+
 #[derive(Default, Clone)]
 pub struct MprisState {
     pub is_playing: bool,
@@ -295,6 +305,13 @@ pub fn mock_state(state: AppState) -> MockState {
             keyboard: keyboard_rx,
             #[cfg(feature = "mod-dbus")]
             dnd: dnd_rx,
+            #[cfg(feature = "mod-dbus")]
+            mpris_scroll: Arc::new(RwLock::new(MprisScrollState::default())),
+            #[cfg(feature = "mod-dbus")]
+            mpris_scroll_tick: {
+                let (_, rx) = watch::channel(0u64);
+                rx
+            },
             health: Arc::new(RwLock::new(state.health)),
             #[cfg(feature = "mod-bt")]
             bt_force_poll: bt_force_tx,