Merge pull request #3938 from pypeclub/bugfix/set_high_dpi_before_app…

…_init

Tray: Change order of attribute changes

openpype/tools/tray/pype_tray.py

@@ -775,12 +775,26 @@ def _create_splash(self):
 def main():
  log = Logger.get_logger(__name__)
  app = QtWidgets.QApplication.instance()
+
+ high_dpi_scale_attr = None
  if not app:
+ # 'AA_EnableHighDpiScaling' must be set before app instance creation
+ high_dpi_scale_attr = getattr(
+ QtCore.Qt, "AA_EnableHighDpiScaling", None
+ )
+ if high_dpi_scale_attr is not None:
+ QtWidgets.QApplication.setAttribute(high_dpi_scale_attr)
+
  app = QtWidgets.QApplication([])
 
+ if high_dpi_scale_attr is None:
+ log.debug((
+ "Attribute 'AA_EnableHighDpiScaling' was not set."
+ " UI quality may be affected."
+ ))
+
  for attr_name in (
- "AA_EnableHighDpiScaling",
- "AA_UseHighDpiPixmaps"
+ "AA_UseHighDpiPixmaps",
  ):
  attr = getattr(QtCore.Qt, attr_name, None)
  if attr is None: