unsupported operand type(s) for +=: 'QPoint' and 'QPointF' in pyqt6 - pyqt6

Question

I have an application built on pyqt6 and wanted to add a feature ( displaying a panorama image),
so I found this code on the internet to display panorama image using pyqt5.
can someone help me convert it to pyqt6?
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
class Panoramic(QtWidgets.QWidget):
def __init__(self, imagePath):
QtWidgets.QWidget.__init__(self)
self.setCursor(QtCore.Qt.CrossCursor)
# keep a reference of the original image
self.source = QtGui.QPixmap(imagePath)
self.pano = QtGui.QPixmap(self.source.width() * 3, self.source.height())
self.center = self.pano.rect().center()
# use a QPointF for precision
self.delta = QtCore.QPointF()
self.deltaTimer = QtCore.QTimer(interval=25, timeout=self.moveCenter)
self.sourceRect = QtCore.QRect()
# create a pixmap with three copies of the source;
# this could be avoided by smart repainting and translation of the source
# but since paintEvent automatically clips the painting, it should be
# faster then computing the new rectangle each paint cycle, at the cost
# of a few megabytes of memory.
self.setMaximumSize(self.source.size())
qp = QtGui.QPainter(self.pano)
qp.drawPixmap(0, 0, self.source)
qp.drawPixmap(self.source.width(), 0, self.source)
qp.drawPixmap(self.source.width() * 2, 0, self.source)
qp.end()
def moveCenter(self):
if not self.delta:
return
self.center += self.delta
# limit the vertical position
if self.center.y() < self.sourceRect.height() * .5:
self.center.setY(self.sourceRect.height() * .5)
elif self.center.y() > self.source.height() - self.height() * .5:
self.center.setY(self.source.height() - self.height() * .5)
# reset the horizontal position if beyond the center of the virtual image
if self.center.x() < self.source.width() * .5:
self.center.setX(self.source.width() * 1.5)
elif self.center.x() > self.source.width() * 2.5:
self.center.setX(self.source.width() * 1.5)
self.sourceRect.moveCenter(self.center.toPoint())
self.update()
def mousePressEvent(self, event):
if event.button() == QtCore.Qt.LeftButton:
self.mousePos = event.pos()
def mouseMoveEvent(self, event):
if event.buttons() != QtCore.Qt.LeftButton:
return
delta = event.pos() - self.mousePos
# use a fraction to get small movements, and ensure we're not too fast
self.delta.setX(max(-25, min(25, delta.x() * .125)))
self.delta.setY(max(-25, min(25, delta.y() * .125)))
if not self.deltaTimer.isActive():
self.deltaTimer.start()
def mouseReleaseEvent(self, event):
self.deltaTimer.stop()
def paintEvent(self, event):
qp = QtGui.QPainter(self)
qp.drawPixmap(self.rect(), self.pano, self.sourceRect)
# resize and reposition the coordinates whenever the window is resized
def resizeEvent(self, event):
self.sourceRect.setSize(self.size())
self.sourceRect.moveCenter(self.center)
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
w = Panoramic('pano5.jpg')
w.show()
sys.exit(app.exec_())
Here is what I tried to do.
changed QtCore.Qt.CrossCursor to QtCore.Qt.CursorShape.CrossCursor
changed QtCore.Qt.LeftButton to QtCore.Qt.MouseButton.LeftButton
changed sys.exit(app.exec_()) to sys.exit(app.exec())
now I reached the point of getting this error
'line 32, in moveCenter
self.center += self.delta
TypeError: unsupported operand type(s) for +=: 'QPoint' and 'QPointF''
and could not find a way to work around it in pyqt6

Answer 1

Here are the changes that solved my issue:
Changed self.center = QPointF(self.pano.rect().center())) to self.center += self.delta.toPoint()).
and changed self.sourceRect.moveCenter(self.center.toPoint()) to self.sourceRect.moveCenter(self.center).
Now the code is successfully converted from pyqt5 to pyqt6.