improved split header menu button

src/util/FunctionEventFilter.cpp

@@ -0,0 +1,17 @@
+#include "FunctionEventFilter.hpp"
+
+namespace chatterino {
+
+FunctionEventFilter::FunctionEventFilter(
+    QObject *parent, std::function<bool(QObject *, QEvent *)> function)
+    : QObject(parent)
+    , function_(std::move(function))
+{
+}
+
+bool FunctionEventFilter::eventFilter(QObject *watched, QEvent *event)
+{
+    return this->function_(watched, event);
+}
+
+}  // namespace chatterino