Grow with scale factor as needed

Signed-off-by: falkTX <falktx@falktx.com>

plugins/glBars/DistrhoUIGLBars.cpp

@@ -3,7 +3,7 @@
  * Copyright (C) 1998-2000  Peter Alm, Mikael Alm, Olle Hallnas, Thomas Nilsson and 4Front Technologies
  * Copyright (C) 2000 Christian Zander <phoenix@minion.de>
  * Copyright (C) 2015 Nedko Arnaudov
- * Copyright (C) 2016-2021 Filipe Coelho <falktx@falktx.com>
+ * Copyright (C) 2016-2022 Filipe Coelho <falktx@falktx.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -30,7 +30,12 @@ DistrhoUIGLBars::DistrhoUIGLBars()
       fInitialized(false),
       fResizeHandle(this)
 {
-    setGeometryConstraints(256, 256, true);
+    const double scaleFactor = getScaleFactor();
+
+    if (d_isNotZero(scaleFactor))
+        setSize(512*scaleFactor, 512*scaleFactor);
+
+    setGeometryConstraints(256*scaleFactor, 256*scaleFactor, true);
 
     // no need to show resize handle if window is user-resizable
     if (isResizable())