fix(bar): handle komorebi theme change properly

Previously if we changed/set the theme on `komorebi.json` it would apply
that theme to the bar without taking into account the transparency
alpha, also after removing the `theme` from `komorebi.json` file it
wasn't applying the theme from the bar config. This commit fixes these
issues.

komorebi-bar/src/bar.rs

@@ -59,7 +59,7 @@ pub struct Komobar {
     pub scale_factor: f32,
 }
 
-pub fn apply_theme(ctx: &Context, theme: KomobarTheme, bg_color: Rc<RefCell<Color32>>) {
+pub fn apply_theme(ctx: &Context, theme: KomobarTheme, bg_color: Rc<RefCell<Color32>>, transparency_alpha: Option<u8>) {
     match theme {
         KomobarTheme::Catppuccin {
             name: catppuccin,
@@ -139,6 +139,12 @@ pub fn apply_theme(ctx: &Context, theme: KomobarTheme, bg_color: Rc<RefCell<Colo
             bg_color.replace(base16.background());
         }
     }
+
+    // Apply transparency_alpha
+    let theme_color = *bg_color.borrow();
+
+    bg_color
+        .replace(theme_color.try_apply_alpha(transparency_alpha));
 }
 
 impl Komobar {
@@ -204,7 +210,7 @@ impl Komobar {
 
         match config.theme {
             Some(theme) => {
-                apply_theme(ctx, theme, self.bg_color.clone());
+                apply_theme(ctx, theme, self.bg_color.clone(), config.transparency_alpha);
             }
             None => {
                 let home_dir: PathBuf = std::env::var("KOMOREBI_CONFIG_HOME").map_or_else(
@@ -224,7 +230,7 @@ impl Komobar {
                 match komorebi_client::StaticConfig::read(&config) {
                     Ok(config) => {
                         if let Some(theme) = config.theme {
-                            apply_theme(ctx, KomobarTheme::from(theme), self.bg_color.clone());
+                            apply_theme(ctx, KomobarTheme::from(theme), self.bg_color.clone(), config.transparency_alpha);
 
                             let stack_accent = match theme {
                                 KomorebiTheme::Catppuccin {
@@ -266,18 +272,13 @@ impl Komobar {
             }
         }
 
-        let theme_color = *self.bg_color.borrow();
-
-        self.bg_color
-            .replace(theme_color.try_apply_alpha(config.transparency_alpha));
-
         if let Some(font_size) = &config.font_size {
             tracing::info!("attempting to set custom font size: {font_size}");
             Self::set_font_size(ctx, *font_size);
         }
 
         self.render_config
-            .replace(config.new_renderconfig(ctx, theme_color));
+            .replace(config.new_renderconfig(ctx, *self.bg_color.borrow()));
 
         let mut komorebi_notification_state = previous_notification_state;
         let mut komorebi_widgets = Vec::new();
@@ -476,6 +477,8 @@ impl eframe::App for Komobar {
                     self.config.monitor.index,
                     self.rx_gui.clone(),
                     self.bg_color.clone(),
+                    self.config.transparency_alpha,
+                    self.config.theme,
                 );
         }
 

komorebi-bar/src/komorebi.rs

@@ -496,6 +496,8 @@ impl KomorebiNotificationState {
         monitor_index: usize,
         rx_gui: Receiver<komorebi_client::Notification>,
         bg_color: Rc<RefCell<Color32>>,
+        transparency_alpha: Option<u8>,
+        default_theme: Option<KomobarTheme>,
     ) {
         match rx_gui.try_recv() {
             Err(error) => match error {
@@ -513,13 +515,33 @@ impl KomorebiNotificationState {
                         SocketMessage::ReloadStaticConfiguration(path) => {
                             if let Ok(config) = komorebi_client::StaticConfig::read(&path) {
                                 if let Some(theme) = config.theme {
-                                    apply_theme(ctx, KomobarTheme::from(theme), bg_color.clone());
+                                    apply_theme(
+                                        ctx,
+                                        KomobarTheme::from(theme),
+                                        bg_color.clone(),
+                                        transparency_alpha,
+                                    );
                                     tracing::info!("applied theme from updated komorebi.json");
+                                } else if let Some(default_theme) = default_theme {
+                                    apply_theme(
+                                        ctx,
+                                        default_theme,
+                                        bg_color.clone(),
+                                        transparency_alpha,
+                                    );
+                                    tracing::info!("removed theme from updated komorebi.json and applied default theme");
+                                } else {
+                                    tracing::warn!("theme was removed from updated komorebi.json but there was no default theme to apply");
                                 }
                             }
                         }
                         SocketMessage::Theme(theme) => {
-                            apply_theme(ctx, KomobarTheme::from(theme), bg_color);
+                            apply_theme(
+                                ctx,
+                                KomobarTheme::from(theme),
+                                bg_color,
+                                transparency_alpha,
+                            );
                             tracing::info!("applied theme from komorebi socket message");
                         }
                         _ => {}