D23911: Port SearchLineWidget to use KBusyIndicatorWidget

[Kai Uwe Broulik]

broulik created this revision.
broulik added reviewers: Okular, aacid.
Herald added a project: Okular.
Herald added a subscriber: okular-devel.
broulik requested review of this revision.

REVISION SUMMARY
  It's a lot nicer than manually painting a `KPixmapSequence` and supports high dpi out of the box.

TEST PLAN
  T11637 <https://phabricator.kde.org/T11637>
  It is pretty new, so maybe too new for the frameworks dep of KDE Applications / Okular
  
  - Busy indicator is prety now
  
  F7344007: Screenshot_20190912_182434.png <https://phabricator.kde.org/F7344007>

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D23911

AFFECTED FILES
  ui/searchlineedit.cpp
  ui/searchlineedit.h

To: broulik, #okular, aacid
Cc: okular-devel, andisa, siddharthmanthan, maguirre, fbampaloukas, joaonetto, kezik, tfella, ngraham, darcyshen, aacid
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