feat(bar): floating center area for widgets

* Added a new floating area at the center of the bar
* Optional center widgets config, fixed spacing on the center widget
* Turning transparency on by default

komorebi-bar/src/bar.rs

@@ -18,6 +18,8 @@ use crate::MONITOR_RIGHT;
 use crate::MONITOR_TOP;
 use crossbeam_channel::Receiver;
 use eframe::egui::Align;
+use eframe::egui::Align2;
+use eframe::egui::Area;
 use eframe::egui::CentralPanel;
 use eframe::egui::Color32;
 use eframe::egui::Context;
@@ -26,6 +28,7 @@ use eframe::egui::FontDefinitions;
 use eframe::egui::FontFamily;
 use eframe::egui::FontId;
 use eframe::egui::Frame;
+use eframe::egui::Id;
 use eframe::egui::Layout;
 use eframe::egui::Margin;
 use eframe::egui::Rgba;
@@ -50,6 +53,7 @@ pub struct Komobar {
     pub render_config: Rc<RefCell<RenderConfig>>,
     pub komorebi_notification_state: Option<Rc<RefCell<KomorebiNotificationState>>>,
     pub left_widgets: Vec<Box<dyn BarWidget>>,
+    pub center_widgets: Vec<Box<dyn BarWidget>>,
     pub right_widgets: Vec<Box<dyn BarWidget>>,
     pub rx_gui: Receiver<komorebi_client::Notification>,
     pub rx_config: Receiver<KomobarConfig>,
@@ -290,6 +294,16 @@ impl Komobar {
             }
         }
 
+        if let Some(center_widgets) = &config.center_widgets {
+            for (idx, widget_config) in center_widgets.iter().enumerate() {
+                if let WidgetConfig::Komorebi(config) = widget_config {
+                    komorebi_widget = Some(Komorebi::from(config));
+                    komorebi_widget_idx = Some(idx);
+                    side = Some(Alignment::Center);
+                }
+            }
+        }
+
         for (idx, widget_config) in config.right_widgets.iter().enumerate() {
             if let WidgetConfig::Komorebi(config) = widget_config {
                 komorebi_widget = Some(Komorebi::from(config));
@@ -304,6 +318,14 @@ impl Komobar {
             .map(|config| config.as_boxed_bar_widget())
             .collect::<Vec<Box<dyn BarWidget>>>();
 
+        let mut center_widgets = match &config.center_widgets {
+            Some(center_widgets) => center_widgets
+                .iter()
+                .map(|config| config.as_boxed_bar_widget())
+                .collect::<Vec<Box<dyn BarWidget>>>(),
+            None => vec![],
+        };
+
         let mut right_widgets = config
             .right_widgets
             .iter()
@@ -329,6 +351,7 @@ impl Komobar {
             let boxed: Box<dyn BarWidget> = Box::new(widget);
             match side {
                 Alignment::Left => left_widgets[idx] = boxed,
+                Alignment::Center => center_widgets[idx] = boxed,
                 Alignment::Right => right_widgets[idx] = boxed,
             }
         }
@@ -336,6 +359,7 @@ impl Komobar {
         right_widgets.reverse();
 
         self.left_widgets = left_widgets;
+        self.center_widgets = center_widgets;
         self.right_widgets = right_widgets;
 
         tracing::info!("widget configuration options applied");
@@ -354,6 +378,7 @@ impl Komobar {
             render_config: Rc::new(RefCell::new(RenderConfig::new())),
             komorebi_notification_state: None,
             left_widgets: vec![],
+            center_widgets: vec![],
             right_widgets: vec![],
             rx_gui,
             rx_config,
@@ -495,7 +520,27 @@ impl eframe::App for Komobar {
                                 w.render(ctx, ui, &mut render_conf);
                             }
                         });
-                    })
+                    });
+
+                    if !self.center_widgets.is_empty() {
+                        // Floating center widgets
+                        Area::new(Id::new("center_panel"))
+                            .anchor(Align2::CENTER_CENTER, [0.0, 0.0]) // Align in the center of the window
+                            .show(ctx, |ui| {
+                                Frame::none().show(ui, |ui| {
+                                    ui.horizontal_centered(|ui| {
+                                        let mut render_conf = *render_config;
+                                        render_conf.alignment = Some(Alignment::Center);
+
+                                        render_config.apply_on_alignment(ui, |ui| {
+                                            for w in &mut self.center_widgets {
+                                                w.render(ctx, ui, &mut render_conf);
+                                            }
+                                        });
+                                    });
+                                });
+                            });
+                    }
                 })
             })
         });
@@ -505,5 +550,6 @@ impl eframe::App for Komobar {
 #[derive(Copy, Clone)]
 pub enum Alignment {
     Left,
+    Center,
     Right,
 }

komorebi-bar/src/config.rs

@@ -37,6 +37,8 @@ pub struct KomobarConfig {
     pub grouping: Option<Grouping>,
     /// Left side widgets (ordered left-to-right)
     pub left_widgets: Vec<WidgetConfig>,
+    /// Center widgets (ordered left-to-right)
+    pub center_widgets: Option<Vec<WidgetConfig>>,
     /// Right side widgets (ordered left-to-right)
     pub right_widgets: Vec<WidgetConfig>,
 }

komorebi-bar/src/main.rs

@@ -269,7 +269,7 @@ fn main() -> color_eyre::Result<()> {
 
     let viewport_builder = ViewportBuilder::default()
         .with_decorations(false)
-        .with_transparent(config.transparency_alpha.is_some())
+        .with_transparent(true)
         .with_taskbar(false);
 
     let native_options = eframe::NativeOptions {

komorebi-bar/src/render.rs

@@ -190,6 +190,7 @@ impl RenderConfig {
             left: match self.alignment {
                 Some(align) => match align {
                     Alignment::Left => spacing,
+                    Alignment::Center => spacing,
                     Alignment::Right => 0.0,
                 },
                 None => 0.0,
@@ -197,6 +198,7 @@ impl RenderConfig {
             right: match self.alignment {
                 Some(align) => match align {
                     Alignment::Left => 0.0,
+                    Alignment::Center => 0.0,
                     Alignment::Right => spacing,
                 },
                 None => 0.0,