D17228: Fixing a crash caused by QCustomPlot's replot method in a concurrent thread

[Robert Lancaster]

lancaster created this revision.
lancaster added a reviewer: mutlaqja.
Herald added a project: KDE Edu.
Herald added a subscriber: kde-edu.
lancaster requested review of this revision.

REVISION SUMMARY
  Fixing an intermittent crash caused by QCustomPlot's replot method 
  being used in a concurrent thread  The reason for it is because Qt does not
  support painting to GUI elements in any thread but the GUI thread and 
  QCustomPlot's replot method includes a repaint.  So if the Histogram is       
  currently visible and construct histogram is run in a concurrent thread, 
  the program would call replot and crash.

REPOSITORY
  R321 KStars

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D17228

AFFECTED FILES
  kstars/fitsviewer/fitstab.cpp

To: lancaster, mutlaqja
Cc: kde-edu, narvaez, apol
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