Migrate from PySide2 to PySide6 to fix Qt symbol compatibility issues

- Updated all import statements from PySide2 to PySide6 across the codebase
- Fixed QAction import (moved from QtWidgets to QtGui in PySide6)
- Updated dependencies: PySide2~=5.15 → PySide6~=6.5
- Switched to opencv-contrib-python-headless to avoid Qt conflicts
- Fixed indentation errors in uihelper_transparency.py
- Resolves ImportError: undefined symbol _ZdlPvm, version Qt_5

Author: stephanschielke

pyproject.toml

@@ -41,8 +41,8 @@ test_sources = [
 
 
 requires = [
-"opencv-contrib-python==4.8.1.78",
-"PySide2~=5.15",
+"opencv-contrib-python-headless==4.8.1.78",
+"PySide6~=6.5",
 "mediapipe==0.10.7",
 "numpy~=1.19",
 "pyqtdarktheme ~=2.1.0",

src/photoglimmer/colorcurverwidget.py

@@ -1,9 +1,8 @@
-
 import sys
-from PySide2 import QtWidgets, QtGui, QtCore
-from PySide2.QtWidgets import QWidget, QApplication, QVBoxLayout, QHBoxLayout, QPushButton # Added layouts/button
-from PySide2.QtGui import QPainter, QPen, QBrush, QColor, QPainterPath, QPalette
-from PySide2.QtCore import QPointF, QRectF, Qt, Signal
+from PySide6 import QtWidgets, QtGui, QtCore
+from PySide6.QtWidgets import QWidget, QApplication, QVBoxLayout, QHBoxLayout, QPushButton # Added layouts/button
+from PySide6.QtGui import QPainter, QPen, QBrush, QColor, QPainterPath, QPalette
+from PySide6.QtCore import QPointF, QRectF, Qt, Signal
 import math
 from pympler import asizeof
 # import copy # Needed for deep copying QPointF list during save/load if necessary

src/photoglimmer/customfiledialog.py

@@ -5,9 +5,9 @@
 # File license CC BY-SA 3.0
 # ###############################################################################
 import sys
-from PySide2.QtCore import Qt
-from PySide2.QtGui import QPixmap
-from PySide2.QtWidgets import QApplication, QFileDialog, QVBoxLayout, QLabel, QDialog
+from PySide6.QtCore import Qt
+from PySide6.QtGui import QPixmap
+from PySide6.QtWidgets import QApplication, QFileDialog, QVBoxLayout, QLabel, QDialog
 import  qdarktheme
 
 

src/photoglimmer/imagewidget.py

@@ -1,4 +1,3 @@
-
 # ###############################################################################
 # Copyright : Rahul Singh
 # URL       : https://github.com/codecliff/PhotoGlimmer
@@ -14,7 +13,7 @@
 # ###############################################################################
 import sys
 from enum import Enum
-from PySide2 import QtCore, QtGui, QtWidgets
+from PySide6 import QtCore, QtGui, QtWidgets
 # --- Interaction Modes Enum ---
 
 

src/photoglimmer/photoglimmer_ui.py

@@ -14,11 +14,11 @@
 #imports
 import os, sys, shutil, time, tempfile
 # QT
-from PySide2 import QtWidgets,  QtCore
-from PySide2.QtUiTools import QUiLoader
-from PySide2.QtGui import QPixmap, QIcon, QMovie, QKeySequence
-from PySide2.QtCore import QThreadPool, QFile,QSettings,QStandardPaths
-from PySide2.QtWidgets import QStyle, QMessageBox, QAction, QGridLayout,QLabel, QDialog
+from PySide6 import QtWidgets,  QtCore
+from PySide6.QtUiTools import QUiLoader
+from PySide6.QtGui import QPixmap, QIcon, QMovie, QKeySequence, QAction
+from PySide6.QtCore import QThreadPool, QFile,QSettings,QStandardPaths
+from PySide6.QtWidgets import QStyle, QMessageBox, QGridLayout,QLabel, QDialog
 # Only if using qdarktheme style
 import  qdarktheme
 # This application
@@ -190,7 +190,7 @@ def  setUpMyUI(self):
 
 
     def  getImagesDirectory(self):
-        from  PySide2.QtCore import QStandardPaths
+        from  PySide6.QtCore import QStandardPaths
         pth=QStandardPaths.PicturesLocation
         sysimgfolder= str(QStandardPaths.writableLocation(pth) )
         if os.path.exists(sysimgfolder):
@@ -636,7 +636,8 @@ def  openBrowser(self, path_to_open):
 
 
     def  getScreenSize( self ):
-        from PySide2.QtWidgets import QApplication, QDesktopWidget
+        from PySide6.QtWidgets import QApplication
+        from PySide6.QtGui import QScreen
         desktop = QDesktopWidget()
         screen_width = desktop.screenGeometry().width()
         screen_height = desktop.screenGeometry().height()

src/photoglimmer/prefs/preferences_dialog.py

@@ -2,11 +2,11 @@
 # preferences_dialog.py
 import sys
 import os
-from PySide2.QtWidgets import (QApplication, QDialog, QFileDialog, QMessageBox,
+from PySide6.QtWidgets import (QApplication, QDialog, QFileDialog, QMessageBox,
                                QWidget, QRadioButton, QVBoxLayout,
                                QDialogButtonBox)
-from PySide2.QtCore import QFile, QSettings, QStandardPaths, Slot
-from PySide2.QtUiTools import QUiLoader
+from PySide6.QtCore import QFile, QSettings, QStandardPaths, Slot
+from PySide6.QtUiTools import QUiLoader
 # --- Import the configuration ---
 #standard way of importing form same package  is to add . prefix
 from .settings_config import SettingsConfig

src/photoglimmer/prefs/settings_config.py

@@ -1,6 +1,6 @@
 
 # settings_config.py
-from PySide2.QtCore import QStandardPaths
+from PySide6.QtCore import QStandardPaths
 
 
 class  SettingsConfig:

src/photoglimmer/requirements.txt

@@ -1,10 +1,10 @@
-"opencv-contrib-python==4.8.1.78",
-"PySide2~=5.15",
-"mediapipe==0.10.7",
-"numpy~=1.19",
-"pyqtdarktheme ~=2.1.0",
-"splines ~= 0.3.0",
-"piexif ~= 1.1.3",
-"Pympler ~=1.1",
-"memory-profiler ~=0.61.0",
-"line-profiler ~=4.2.0"
+opencv-contrib-python-headless==4.8.1.78
+PySide6~=6.5
+mediapipe==0.10.7
+numpy~=1.19
+pyqtdarktheme~=2.1.0
+splines~=0.3.0
+piexif~=1.1.3
+Pympler~=1.1
+memory-profiler~=0.61.0
+line-profiler~=4.2.0

src/photoglimmer/threadwork.py

@@ -1,9 +1,8 @@
-
 # source for all the code in  this file :
 # https://gist.github.com/sabapathygithub/160ecf262063bcb826787a7af1637f44
-from PySide2.QtCore import QObject,QRunnable,QThreadPool
-from PySide2.QtCore import Signal as pyqtSignal
-from PySide2.QtCore import Slot as pyqtSlot
+from PySide6.QtCore import QObject,QRunnable,QThreadPool
+from PySide6.QtCore import Signal as pyqtSignal
+from PySide6.QtCore import Slot as pyqtSlot
 import sys,traceback
 
 

src/photoglimmer/uihelper_transparency.py

@@ -1,4 +1,3 @@
-
 # import backend
 import os
 import photoglimmer.photoglimmer_backend as backend
@@ -14,16 +13,16 @@ def  __init__(self, uiobject):
 
 
     def  convert_and_copy_to_clipboard(self, bgra_image):
-            from PySide2.QtGui import QImage, QPixmap,QClipboard
-            from PySide2.QtWidgets import QApplication
+            from PySide6.QtGui import QImage, QPixmap,QClipboard
+            from PySide6.QtWidgets import QApplication
             rgba_image = backend.cv2.cvtColor(bgra_image, backend.cv2.COLOR_BGRA2RGBA)
             height, width, channels = rgba_image.shape
             bytes_per_line = channels * width 
             qimage = QImage(rgba_image.data, width, height, bytes_per_line, 
                             QImage.Format_RGBA8888)
             clipboard = QApplication.clipboard()
             clipboard.setPixmap(QPixmap(qimage), QClipboard.Clipboard) 
-            return 
+            return
 
 
     def  transparency_to_clipboard( self, tempdirpath,originalImgPath):