pdf_view: QPdfView = main_window.ui.pdfView
document: QPdfDocument = pdf_view.document()
current_page: int = pdf_view.pageNavigator().currentPage()

selection: QPdfSelection = document.getAllText(current_page)
print(selection.isValid())
# True
print(selection.boundingRectangle())
# PySide6.QtCore.QRectF(73.000000, 118.000000, 450.000000, 682.000000)
print(selection.text())
# some text ...

But when trying to use getSelection (even with the QPointFs of the boundingRectagle above) I get an invalid selection with a QRectF with all its values set to 0.

What do I'm missing?

top_left: QPointF = selection.boundingRectangle().topLeft()
bottom_right: QPointF = selection.boundingRectangle().bottomRight()
selection: QPdfSelection = document.getSelection(current_page, top_left, bottom_right)
print(selection.isValid(), selection.boundingRectangle())
print(selection.isValid())
# False
print(selection.boundingRectangle())
# False PySide6.QtCore.QRectF(0.000000, 0.000000, 0.000000, 0.000000)