Workaround for a case of wrong wallpaper size on Wayland #1975
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Due to a bug in Qt, `QScreen::devicePixelRatio()` may give a rounded (ceiling?) integer on Wayland, while `QWindow::devicePixelRatio()` always gives the correct ratio. Closes #1974 NOTE: This also works with an on-the-fly change of the scaling with kanshi.
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Due to a bug in Qt,
QScreen::devicePixelRatio()may give a rounded (ceiling?) integer on Wayland, whileQWindow::devicePixelRatio()always gives the correct ratio.Closes #1974
NOTE: This also works with an on-the-fly change of the scaling with kanshi.