D29569: Fix computing display geometry on multi-monitor HiDPI setups on X11

[Victor Dodon]

printesoi created this revision.
Herald added a project: Frameworks.
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REVISION SUMMARY
  KWindowSystem::workArea() and KWindowSystem::workArea(QList<WId>()) should return the same value, but the second call returned an incorrect value on multi-monitor HiDPI setups. The cause is that the former uses NETRootInfo::workArea() whereas the second one uses displayGeometr() to compuse base work area. displayGeometry() on X11 platform did not take into account the device pixel ratio.

REPOSITORY
  R278 KWindowSystem

REVISION DETAIL
  https://phabricator.kde.org/D29569

AFFECTED FILES
  src/platforms/xcb/kwindowsystem.cpp

To: printesoi
Cc: kde-frameworks-devel, LeGast00n, cblack, michaelh, ngraham, bruns
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