Update QT_SCREEN_SCALE_FACTORS

Store name->factor associations in a global QHash instead of on the
QScreen object, making them survive QScreen object deletion, for
example on disconnect/ connect cycles.

Make factors set with QT_SCREEN_SCALE_FACTORS override the screen
factors computed from platform plugin DPI values. This matches the use
case for QT_SCREEN_SCALE_FACTORS (but not the general scale factors
combine by multiplication”principle)

Done-with: Friedemann Kleint <Friedemann.Kleint@qt.io>
Task-number: QTBUG-53022
Change-Id: I12771249314ab0c073e609d62f57ac0d18d3b6ce
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

0 files changed, 0 insertions, 0 deletions