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Scroll to top of messages again

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We want to specify where to scroll to from the top of the message rather
than the bottom. To do this in a recycler view that's filled from the
bottom, let's just target the event above and move that out by 2/3 of
the screen.

Change-Id: Ica8ec2d0aaa22b654232f128992510c9d550fe35
This commit is contained in:
SpiritCroc 2021-08-02 10:01:53 +02:00
parent 3af5e6ea76
commit 401424ff96
2 changed files with 8 additions and 3 deletions
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5
vector/src/main/java/im/vector/app/features/home/room/detail/RoomDetailFragment.kt
View file

@ -835,7 +835,10 @@ class RoomDetailFragment @Inject constructor(
scrollOnHighlightedEventCallback.scheduleScrollTo(action.eventId)
} else {
views.timelineRecyclerView.stopScroll()
layoutManager.scrollToPosition(scrollPosition)
// Scroll such that the scrolled-to event is moved down 1/3 of the screen.
// To do that, we actually scroll the view above out by 2/3 (since we can only control the distance
// from the bottom of the view, not the top).
layoutManager.scrollToPositionWithOffset(scrollPosition + 1, views.timelineRecyclerView.measuredHeight * 2 / 3)
}
}

6
vector/src/main/java/im/vector/app/features/home/room/detail/ScrollOnNewMessageCallback.kt
View file

@ -64,8 +64,10 @@ class ScrollOnNewMessageCallback(private val layoutManager: LinearLayoutManager,
layoutManager.scrollToPositionWithOffset(0, 0)
} else {
timelineEventController.searchPositionOfEvent(scrollToEvent)?.let {
// Scroll such that the scrolled-to event is moved up 1/4 of the screen
layoutManager.scrollToPositionWithOffset(it, parentView.measuredHeight / 4)
// Scroll such that the scrolled-to event is moved down 1/3 of the screen.
// To do that, we actually scroll the view above out by 2/3 (since we can only control the distance
// from the bottom of the view, not the top).
layoutManager.scrollToPositionWithOffset(it + 1, parentView.measuredHeight * 2 / 3)
}
}
return