Add widget: LeftWM Window Title

- Display the title of the current window
- Only for LeftWM
- Use `leftwm-state -q`

src/widgets/leftwmdata.rs

@@ -0,0 +1,49 @@
+use crate::TopBar;
+use slint::{ComponentHandle, Timer, TimerMode, SharedString};
+use std::process::Command;
+use std::time::Duration;
+use serde::Deserialize;
+
+// Minimal JSON structure 
+#[derive(Deserialize)]
+struct LeftState {
+    window_title: String,
+}
+
+// Run leftwm-state and return JSON output (or empty string)
+fn get_leftwm_state() -> String {
+    Command::new("leftwm-state")
+        .arg("-q")
+        .output()
+        .map(|o| String::from_utf8_lossy(&o.stdout).to_string())
+        .unwrap_or_default()
+}
+
+// Parse only the window title
+fn parse_window_title(json: &str) -> String {
+    serde_json::from_str::<LeftState>(json)
+        .map(|v| v.window_title)
+        .unwrap_or_default()
+}
+
+// Main updater loop
+fn start_leftwm_updater(ui: &TopBar) {
+    let weak = ui.as_weak();
+
+    let timer = Box::leak(Box::new(Timer::default()));
+
+    // Poll every ~300 ms (fast enough for responsiveness)
+    timer.start(TimerMode::Repeated, Duration::from_millis(300), move || {
+        if let Some(ui) = weak.upgrade() {
+            let state = get_leftwm_state();
+            let title = parse_window_title(&state);
+            // Send to UI
+            ui.set_current_window_title(SharedString::from(title));
+        }
+    });
+}
+
+// Public entry
+pub fn install(ui: &TopBar) {
+    start_leftwm_updater(ui);
+}

src/widgets/mod.rs

@@ -6,6 +6,7 @@ mod timewidget;
 mod volumewidget;
 mod weatherwidget;
 mod wifiwidget;
+mod leftwmdata;
 
 use crate::TopBar;
 
@@ -17,6 +18,7 @@ pub fn install_callbacks(ui: &TopBar) {
     brightnesswidget::install(ui);
     wifiwidget::install(ui);
     weatherwidget::install(ui);
+    leftwmdata::install(ui);
 
     // In the future:
     // notifwidget::install(ui);

ui/topbar.slint

@@ -9,7 +9,9 @@ export component TopBar inherits Window {
     in property<int> bar_height;
     in property<int> def_font_size;
     in property<string> def_font_fam;
-    background: #00000000;
+
+    // Right side
+    in property<string> current_window_title;
 
     // Time widget
     in-out property <string> time_text;
@@ -92,6 +94,7 @@ export component TopBar inherits Window {
     y: 0px;
     default-font-family: def_font_fam;
     default-font-size: def_font_size *1px;
+    background: #00000000;
 
     Rectangle {
         x: 0px;
@@ -110,8 +113,21 @@ export component TopBar inherits Window {
             
             // Left side
             Rectangle {
-                background: #79a9af7b;
                 width: parent.width/3;
+                //background: #46adbb79;
+                HorizontalLayout {
+                    alignment: start; // Left-align
+                    padding-left: 4px;
+                    padding-right: 4px;
+
+                    // CUrrent Window Title
+                    Text {
+                        text: root.current_window_title;
+                        vertical-alignment: center;
+                        wrap: no-wrap;
+                        overflow: elide;
+                    }
+                }
             }  
             
             // Middle