From 9452cdb06d289aced41d4bffb0104f6fc24d2ab5 Mon Sep 17 00:00:00 2001
From: Jakub Trllo <jakub.trllo@gmail.com>
Date: Mon, 5 Feb 2024 13:45:04 +0100
Subject: [PATCH] define 'get_qt_app' in tools utils

---
 openpype/hosts/fusion/api/menu.py | 30 +-----------------------------
 openpype/tools/utils/__init__.py  |  1 +
 openpype/tools/utils/lib.py       | 23 +++++++++++++++++++----
 3 files changed, 21 insertions(+), 33 deletions(-)

diff --git a/openpype/hosts/fusion/api/menu.py b/openpype/hosts/fusion/api/menu.py
index 53ff5af767..ff4a734928 100644
--- a/openpype/hosts/fusion/api/menu.py
+++ b/openpype/hosts/fusion/api/menu.py
@@ -15,6 +15,7 @@ from openpype.hosts.fusion.api.lib import (
 )
 from openpype.pipeline import get_current_asset_name
 from openpype.resources import get_openpype_icon_filepath
+from openpype.tools.utils import get_qt_app
 
 from .pipeline import FusionEventHandler
 from .pulse import FusionPulse
@@ -173,35 +174,6 @@ class OpenPypeMenu(QtWidgets.QWidget):
         set_asset_framerange()
 
 
-def get_qt_app():
-    """Main Qt application."""
-
-    app = QtWidgets.QApplication.instance()
-    if app is None:
-        for attr_name in (
-            "AA_EnableHighDpiScaling",
-            "AA_UseHighDpiPixmaps",
-        ):
-            attr = getattr(QtCore.Qt, attr_name, None)
-            if attr is not None:
-                QtWidgets.QApplication.setAttribute(attr)
-
-        policy = os.getenv("QT_SCALE_FACTOR_ROUNDING_POLICY")
-        if (
-            hasattr(
-                QtWidgets.QApplication, "setHighDpiScaleFactorRoundingPolicy"
-            )
-            and not policy
-        ):
-            QtWidgets.QApplication.setHighDpiScaleFactorRoundingPolicy(
-                QtCore.Qt.HighDpiScaleFactorRoundingPolicy.PassThrough
-            )
-
-        app = QtWidgets.QApplication(sys.argv)
-
-    return app
-
-
 def launch_openpype_menu():
 
     app = get_qt_app()
diff --git a/openpype/tools/utils/__init__.py b/openpype/tools/utils/__init__.py
index 50d50f467a..74702a2a10 100644
--- a/openpype/tools/utils/__init__.py
+++ b/openpype/tools/utils/__init__.py
@@ -32,6 +32,7 @@ from .lib import (
     set_style_property,
     DynamicQThread,
     qt_app_context,
+    get_qt_app,
     get_openpype_qt_app,
     get_asset_icon,
     get_asset_icon_by_name,
diff --git a/openpype/tools/utils/lib.py b/openpype/tools/utils/lib.py
index 365caaafd9..c7f92dd26e 100644
--- a/openpype/tools/utils/lib.py
+++ b/openpype/tools/utils/lib.py
@@ -154,11 +154,15 @@ def qt_app_context():
         yield app
 
 
-def get_openpype_qt_app():
-    """Main Qt application initialized for OpenPype processed.
+def get_qt_app():
+    """Get Qt application.
 
-    This function should be used only inside OpenPype process and never inside
-        other processes.
+    The function initializes new Qt application if it is not already
+    initialized. It also sets some attributes to the application to
+    ensure that it will work properly on high DPI displays.
+
+    Returns:
+        QtWidgets.QApplication: Current Qt application.
     """
 
     app = QtWidgets.QApplication.instance()
@@ -184,6 +188,17 @@ def get_openpype_qt_app():
 
         app = QtWidgets.QApplication(sys.argv)
 
+    return app
+
+
+def get_openpype_qt_app():
+    """Main Qt application initialized for OpenPype processed.
+
+    This function should be used only inside OpenPype process and never inside
+        other processes.
+    """
+
+    app = get_qt_app()
     app.setWindowIcon(QtGui.QIcon(get_app_icon_path()))
     return app