x11: add XPanelWindow

src/wayland/init.cpp

@@ -1,5 +1,7 @@
 #include <qguiapplication.h>
+#include <qlogging.h>
 #include <qqml.h>
+#include <qtenvironmentvariables.h>
 
 #include "../core/plugin.hpp"
 
@@ -10,7 +12,19 @@
 namespace {
 
 class WaylandPlugin: public QuickshellPlugin {
-	bool applies() override { return QGuiApplication::platformName() == "wayland"; }
+	bool applies() override {
+		auto isWayland = QGuiApplication::platformName() == "wayland";
+
+		if (!isWayland && !qEnvironmentVariable("WAYLAND_DISPLAY").isEmpty()) {
+			qWarning() << "--- WARNING ---";
+			qWarning() << "WAYLAND_DISPLAY is present but QT_QPA_PLATFORM is"
+			           << QGuiApplication::platformName();
+			qWarning() << "If you are actually running wayland, set QT_QPA_PLATFORM to \"wayland\" or "
+			              "most functionality will be broken.";
+		}
+
+		return isWayland;
+	}
 
 	void registerTypes() override {
 #ifdef QS_WAYLAND_WLR_LAYERSHELL