Using a directional distance to calculate an animation velocity fixes an
issue where a panel's animation was wrong when a user swipes up a panel
at the top most position.
* add floatingPanel(_:contentOffsetForPinning:)
* add 'Show NavigationController' sample
* fix the initial content offset in a navigation bar with a large text
The content offset preservation should be applied only when
`FloatingPanelController.contentInsetAdjustmentBehavior` is `.always`.
This is because the library user loses control of the initial offset.
Ideally, it's better to define a delegate method like
scrollViewDidEndDragging(_:willDecelerate:) in FloatingPanelControllerDelegate
to notify whether a panel will be decelerated or not.
However it's a broken change so I add this change as workaround.
The delegate method definition will be improved on v2.0.
This issue is that a panel moved up while dragging it
down if content offset of the tracking scroll view in
a content view controller was greater than its top interaction buffer.
Ref. #293
* Evaluate the surface position approximately by 1px with a display scale
* Allow a top scroll bouncing of content without closing floating panel when a user scrolls it a lot
Following the alert suggestion
> [TableView] Warning once only: UITableView was told to layout its visible
> cells and other contents without being in the view hierarchy (the table
> view or one of its superviews has not been added to a window).
Following the alert suggestion
> [TableView] Warning once only: UITableView was told to layout its visible
> cells and other contents without being in the view hierarchy (the table
> view or one of its superviews has not been added to a window).
The panel(surface view) could stop b/w anchors if the pan gesture doesn't
pass through `.changed` state after an interruptible animator is interrupted.
The possible reason is the constraints have never changed since the last animation
is committed so that `surfaceView.superview!.layoutIfNeeded()` doesn't trigger
a layout update by the constraint-based layout system in
`FloatingPanelLayoutAdapter.activateLayout(of:)`.
Thus the inserted code changes a panel interactive constraint by the least
positive number. It allows the constraint-based layout system to update the
surface layout expectedly.
Shin Yamamoto
Grigory
Federico Zanetello
Ramesh R C
dmytrofrolov1
Nikolay Derkach
David Hart
Yuki Yoshioka