Merge pull request #4532 from mbroemme/2025-wlr-taskbar-add-justify-option

feat(wlr/taskbar): add `justify` option to control horizontal alignment of the module box

man/waybar-wlr-taskbar.5.scd

@@ -70,6 +70,10 @@ Addressed by *wlr/taskbar*
 	default: false ++
 	If set to true, group tasks by their app_id. Cannot be used with 'active-first'.
 
+*justify*: ++
+	typeof: string ++
+	The alignment of the text within the module's box, allowing options 'left', 'right', or 'center' to define the positioning.
+
 *expand*: ++
 	typeof: bool ++
 	default: false ++

src/modules/wlr/taskbar.cpp

@@ -124,6 +124,17 @@ Task::Task(const waybar::Bar& bar, const Json::Value& config, Taskbar* tbar,
     content_.add(text_after_);
   }
 
+  if (config_["justify"].isString()) {
+    auto justify_str = config_["justify"].asString();
+    if (justify_str == "left") {
+      content_.set_halign(Gtk::ALIGN_START);
+    } else if (justify_str == "right") {
+      content_.set_halign(Gtk::ALIGN_END);
+    } else if (justify_str == "center") {
+      content_.set_halign(Gtk::ALIGN_CENTER);
+    }
+  }
+
   content_.show();
   button.add(content_);