chore: no longer rely on qpa x11 platform

util.h

@@ -8,6 +8,7 @@
 #include <QImage>
 #include <QSharedPointer>
 #include <QSet>
+#include <QObject>
 
 #include <cstdint>
 #include <sys/types.h>
@@ -21,7 +22,7 @@ struct _XDisplay;
 namespace tray {
 #define UTIL Util::instance()
 class XcbThread;
-class Util
+class Util : public QObject
 {
 
 public:
@@ -59,6 +60,12 @@ private:
     Util(const Util&) = delete;
     Util& operator=(const Util&) = delete;
 
+    enum class DispatchEventsMode {
+        Poll,
+        EventQueue
+    };
+    void dispatchEvents(DispatchEventsMode mode);
+
     bool isTransparentImage(const QImage &image);
 
     QImage convertFromNative(xcb_image_t* image);