[Interest] QPixmap::scroll() is not HiDPI-aware?
realnc at gmail.com
Mon Dec 31 01:53:02 CET 2018
When I use QPixmap::scroll() it does not take the devicePixelRatio() of
the pixmap into account, so the passed values need to be scaled
beforehand. However, there is no QPixmap::scroll() overload that takes
floating point arguments. It only takes integers. So when scaling the
passed values by the DPR, they will be inaccurate when the DPR is
fractional (like 125%, 150% and 175% scaling on Windows instead of 200%,
or fractional screen scaling in KDE.)
Was this intended or is it an oversight, and is there a recommended
approach for doing a HiDPI QPixmap::scroll()?
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