D7640: QtCurve: reduce progressbar timer overhead

[René J.V. Bertin]

rjvbb added a comment.


  Implementing on-demand/JIT starting of the timer also allowed to kill the timer when all progressbars stopped animating, in the end. No more need for the idling frequency trick.

REPOSITORY
  R626 QtCurve

REVISION DETAIL
  https://phabricator.kde.org/D7640

To: rjvbb, yuyichao, #plasma
Cc: davidedmundson, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart, lukas
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