D5078: when the padding aroun the window changes, update

[Marco Martin]

mart created this revision.
Restricted Application added a project: KWin.
Restricted Application added subscribers: KWin, kwin, plasma-devel.

REVISION SUMMARY
  update m_visibleRectBeforeGeometryUpdate when the padding
  change signal gets emitted: aurorae updates its shadow
  and postentially shadow size asynchronously after repainting.
  that would make the first addRepaintDuringGeometryUpdates
  when the winow is moved *for the first time* have a wrong
  m_visibleRectBeforeGeometryUpdate that doesn't take into
  account the shadow, leaving some leftover shadow on screen
  
  BUG:377670

TEST PLAN
  shadow leftover not reproducible anymore with maui's kwinrc

REPOSITORY
  R108 KWin

BRANCH
  phab/updateshadowchanges

REVISION DETAIL
  https://phabricator.kde.org/D5078

AFFECTED FILES
  abstract_client.cpp

To: mart, #plasma, graesslin
Cc: plasma-devel, kwin, #kwin, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol
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