Fix high DPI check in 0437835b

app/wm.cpp

@@ -0,0 +1,46 @@
+#include "utils.h"
+
+#ifdef HAS_X11
+#include <X11/Xlib.h>
+#endif
+
+#ifdef HAS_WAYLAND
+#include <wayland-client.h>
+#endif
+
+bool WMUtils::isRunningX11()
+{
+#ifdef HAS_WAYLAND
+    Display* display = XOpenDisplay(nullptr);
+    if (display != nullptr) {
+        XCloseDisplay(display);
+        return true;
+    }
+#endif
+
+    return false;
+}
+
+bool WMUtils::isRunningWayland()
+{
+#ifdef HAS_WAYLAND
+    struct wl_display* display = wl_display_connect(nullptr);
+    if (display != nullptr) {
+        wl_display_disconnect(display);
+        return true;
+    }
+#endif
+
+    return false;
+}
+
+bool WMUtils::isRunningWindowManager()
+{
+#if defined(Q_OS_WIN) || defined(Q_OS_DARWIN)
+    // Windows and macOS are always running a window manager
+    return true;
+#else
+    // On Unix OSes, look for Wayland or X
+    return WMUtils::isRunningWayland() || WMUtils::isRunningX11();
+#endif
+}