PDFViewDelegate.pdfViewWillChangeScaleFactor only exists for MacOS, but how to listen for scale changes (at best before they happen) on iOS?
I receive the PDFViewScaleChanged notification after the user changes scale by pinching, yet not if she or he does it by double tap. The same is true when trying to override PDFView.scaleFactor setter, double tap scale changes go unnoticed, although scaleFactor is actually adjusted.
I'm trying to tackle the issue that there seem to be no reliable way to listen for scale changes (in the best case before they happen).
Any ideas?
Thanks a million
Klaus
