D24256: Enable the auto-stretch Fits setting to be undone.

[Hy Murveit]

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

REVISION SUMMARY
  Previously, when the Kstars Fits setting AutoStretch was set, and the image
  was displayed in the viewer, the stretch could not be undone. This change
  allows undo of the initial stretch with the undo button. A follow-in might
  convert the autostretch button to toggle stretch if no intermediate filter
  was applied.

REPOSITORY
  R321 KStars

BRANCH
  undo-stretch (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D24256

AFFECTED FILES
  kstars/fitsviewer/fitsview.cpp
  kstars/fitsviewer/fitsviewer.cpp

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