Revert "Increase smooth scrolling animation duration from 100 to 300 ms and set easing curve to InOutQuart"
This reverts commit 58c5eae1953bbdcf6d4150b21cb7ffdad07a5257.
Reasons against this change:
- Scroll is now too fast with devices such as touchpads or trackpoints.
- Scroll behavior is now inconsistent between Dolphin and other applications (e.g. the Plasma file dialog). Breeze's default animation duration is 100 ms.
- Many people complained and this feature is currently not configurable. We should introduce a QStyle::SH_Widget_Animation_Duration hint that would allow us to not hardcode durations in Dolphin (i.e. respect whatever duration the users set in their QStyle). Proposal in https://codereview.qt-project.org/#/c/195712/
Reviewers: VDG, Plasma, emmanuelp, davidedmundson
Reviewed By: Plasma, davidedmundson
Differential Revision: https://phabricator.kde.org/D5883