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Chris Waldon
cc2d2c0abf
This commit updates the logic that computes scroll viewport coordinates to correctly consume layout.Position.OffsetLast, which was previously ignored. The impact of ignoring that field was that dragging on a scroll indicator could sometimes fail to reach the end of the list. I've updated the logic to consume that field, which increased the amount of visual jitter in the position of the scrollbar. I then also added a mechanism for smoothing the jitter by using both methods of deriving the viewport and synthesizing a viewport from both. This new strategy exhibits a lower standard deviation than the other options on each of: - the length of the scroll indicator - the change in the start coordinate of the viewport when scrolling smoothly - the change in the end coordinate of the viewport when scrolling smoothly Fixes: https://todo.sr.ht/~eliasnaur/gio/504 Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>