xster 4fcdb50d9b
Add Cupertino scrollbar (#13290)
* Create CupertinoScrollbar

* handle main axis margin

* Adaptive material scrollbar and tests

* Small tweaks

* reapply changes on head

* Docs

* start

* Refactored ScrollbarPainter to be more immutable

* fix tests

* fix bug: one animationcontroller pointed to multiple painters

* some docs tweak

* remove unused import

* review

* review

* add dispose
2017-12-21 16:44:42 -08:00
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2017-12-21 16:44:42 -08:00