D29263: Position OSD a bit farther down

ngraham created this revision.
Herald added a project: KWin.
Herald added a subscriber: kwin.
ngraham requested review of this revision.

REVISION SUMMARY
  A common user complains is that our OSDs--particularly the volume OSD--are too intrusive
  and get in the way of the screen content. For example when adjusting the volume while
  watching a full-screen video, the volume change OSD will typically appear right in the
  middle of an actor's face.
  
  D20569 <https://phabricator.kde.org/D20569> was an attempt to use a horizontal OSD to alleviate this issue. It mostly worked,
  but IMO it was still positioned too high up.
  
  This patch moved the placement down a little bit to make the OSD appear even farther from
  the center of the screen to make it less likely to
  
  I tried not to move it down too far or else it would interfere with subtitles in videos.

TEST PLAN
  F8269172: Screenshot_20200428_123436.png <https://phabricator.kde.org/F8269172> 
  F8269164: Screenshot_20200428_122838.png <https://phabricator.kde.org/F8269164>
  F8269163: Screenshot_20200428_122229.png <https://phabricator.kde.org/F8269163>

REPOSITORY
  R108 KWin

BRANCH
  position-osd-a-bit-farther-down (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D29263

AFFECTED FILES
  placement.cpp

To: ngraham
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