D12405: [WIP] Per-screen scale factors on X11 using QT_SCREEN_SCALE_FACTORS

[David Edmundson]

davidedmundson added a comment.


  The good:
  
  In one setup I was pleasantly surpised at how well it worked. Fonts did behave as expected. 
  Specatcle was able to capture all screens and individual rects correctly.
  
  The less good:
  
  When I switched round the primary monitor all through the GUI and rebooting I had a right mess. The @1x screen fonts were double the size, the @2x screen were 4x the size.
  In this setup spectacle had an issue with "current screen"  when it was on the non primary. I assume this problem: https://bugreports.qt.io/browse/QTBUG-64992  .
  
  Possibly that's just a oneline fix wrt correct font DPI saving.
  
  Does this change make sense whilst Plasma is not using Qt scaling?

REPOSITORY
  R104 KScreen

REVISION DETAIL
  https://phabricator.kde.org/D12405

To: fvogt, #plasma
Cc: mart, hein, ngraham, graesslin, davidedmundson, plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol
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