add manpage and make format option work

man/waybar-river-window.5.scd

@@ -0,0 +1,31 @@
+waybar-river-window(5)
+
+# NAME
+
+waybar - river window module
+
+# DESCRIPTION
+
+The *window* module displays the title of the currently focused window in river
+
+# CONFIGURATION
+
+Addressed by *river/window*
+
+*format*: ++
+	typeof: string ++
+	default: {} ++
+	The format, how information should be displayed. On {} data gets inserted.
+
+# EXAMPLES
+
+```
+"river/window": {
+    "format": "{}"
+}
+```
+
+# STYLE
+
+- *#window*
+- *window#.focused* Applied when the output this module's bar belongs to is focused.

src/modules/river/window.cpp

@@ -1,14 +1,11 @@
 #include "modules/river/window.hpp"
 
-#include <gtkmm/button.h>
-#include <gtkmm/label.h>
 #include <spdlog/spdlog.h>
 #include <wayland-client.h>
 
 #include <algorithm>
 
 #include "client.hpp"
-#include "xdg-output-unstable-v1-client-protocol.h"
 
 namespace waybar::modules::river {
 
@@ -99,11 +96,11 @@ void Window::handle_focused_view(const char *title) {
   // last focused view, and will get blank labels until they are brought into focus at least once.
   if (focused_output_ != output_) return;
 
-  if (std::strcmp(title, "") == 0) {
-    label_.hide();  // hide empty labels
+  if (std::strcmp(title, "") == 0 || format_.empty()) {
+    label_.hide();  // hide empty labels or labels with empty format
   } else {
     label_.show();
-    label_.set_markup(title);
+    label_.set_markup(fmt::format(format_, title));
   }
 
   ALabel::update();