Using OutQuad easing curve and restarting animation on new wheel events
make the scrolling feel a lot better.
Wheel scrolling behavior:
horizontal wheel event: slower scrolling
vertical wheel event with control modifier: faster scrolling
vertical wheel event with other(+no) modifiers: fast scrolling
Both tabbars will now have the same height.
This commit fixes incorrect drawing of line under pinned tabs when
moving tabs with Oxygen theme.
Also removed unused maxVisiblePinnedTabs property
Set of patches:
Introduce TabStackedWidget+ComboTabbar
[Windows] Fix enabling blur background in fullscreen
[ComboTabBar] Fix some issues with pinned tabs
[ComboTabBar] Don't use pointer to integer,
Implement TabStackedWidget::keyPressEvent() and fix changing tab by wheel event
Fix animation delay of dragged tab's buttons.
[ComboTabBar] Add themable scrollButtons