Uses SliverPadding to implementing paddding in ScrollView. Also, deploy
ScrollView in more places now that it implements padding.
Finally, remove loader_app.dart because it is not referenced.
We now report an accurate estimate when the lastIndex is the final index
in the list.
Also, we now project forward from the lastIndex using the extent of the
reified children instead of trying to project forward from index 0.
This new algorithm leads to estimation error as you reach the end of a
list, avoiding some ballistic overscrolls.
When we start a ballisitic scroll activity to correct an out-of-range scroll
offset, make sure we start with a velocity that is headed in the right
direction.
This patch introduces ScrollView, which is a convenience widget for using a
SliverBlock. This patch also switches a number of tests from Block to
ScrollView. Once we support more features of block (e.g., padding and
shrinkwrapping), we'll be able to move over more clients.
I plan to use this to implement similar logic in SliverPadding.
To make this easier to test I extended the paints matcher to accept a
function that takes a canvas. While I was at it I also made it accept
a Finder, it'll go and find the render object for you.
Also added support for paints..path and fixed some grammar in the
error messages.
Also improved the docs for debugPaint*.
This widget is a replacement for ScrollableViewport that uses the new
Scrollable2 machinery. The widget is not based on Slivers but does use the new
scroll behavior classes.
This patch aligns the iteration patterns used by animations and
ChangeNotifier. They now both respect re-entrant removal of listeners
and coalesce duplication registrations. (Also, ChangeNotifier
notification is no longer N^2).
This patch introduces ObserverList to avoid the performance regression that the
previous version of this patch caused.
Fixes#7533
MockCanvas to use it instead.
Currently it only supports a very limited set of drawing features, but
adding new ones is easy.
Once the feature set is more complete, and we've used this a bunch, if
it feels right, this API will get promoted to flutter_test.
This patch aligns the iteration patterns used by animations and
ChangeNotifier. They now both respect re-entrant removal of listeners
and coalesce duplication registrations. (Also, ChangeNotifier
notification is no longer N^2).
Fixes#7533
Previously, these classes where in material.dart, which meant they could
access private interfaces in that library. This patch moves them out
into their own files so that they need to play by the rules of the
public API.
Fixes#5969
It's not correct to set sizedByParent for
RenderCustomSingleChildLayoutBox because the delegate's size function
might depend on information other than the incoming constraints.
Previously the navigator wouldn't always call Route.dispose when it was
removed from the tree. After this patch, the navigator remembers popped
routes so that it can call dispose on them when it is removed from the
tree.
Also, improve some error messages around calling dispose() more than
once on routes and AnimationControllers.
Fixes#7457
