D7830: Use a separate config value for Wayland font DPI

[David Edmundson]

davidedmundson created this revision.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.

REVISION SUMMARY
  On X our font DPI is used in addition to the scaling.
  i.e I want scale 2 and font DPI at 192 (96*2)
  
  On Wayland it's the opposite. The font is scaled *with* the output
  scaling. So I want it at 96 (or unset)
  
  Using the same settings makes swithing to and from X and wayland hard,
  and also makes the first Wayland run suck.
  
  There are potentially some users who want it 110 at both, so we do still
  need the option (so this isn't a perfect solution)
  
  Can we just divide it? Not really as we don't know what scale the user
  will be using and it might not just be one value.
  
  I'll make the Font KCM write to two different config values depending on
  where we're currently running.

REPOSITORY
  R120 Plasma Workspace

BRANCH
  randa/accessibility

REVISION DETAIL
  https://phabricator.kde.org/D7830

AFFECTED FILES
  startkde/startplasmacompositor.cmake

To: davidedmundson, #plasma
Cc: plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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