Flickable: make overshoot distance velocity-sensitive; limit velocity

QQuickFlickablePrivate::overShootDistance() was documented to take
velocity, but actually took the size (content width or height) instead.
When animated flicking occurs while handling wheel events, and we hit
the end-stop, we want the springy overshoot behavior to be proportional
to velocity, not always go to the max of 150 pixels.

But then the calculated velocity needs to be kept reasonable; so we
avoid updating the value if the time between updates is less than 2 ms.

This code is bypassed when the user is actually drag-flicking the
content, i.e. when the wheel events have phase() or when dragging via
mouse or touch.

Fixes: QTBUG-99529
Change-Id: Ia9278c6fb14654d0a05b9679824ee7bdef4e219b
Reviewed-by: Oliver Eftevaag <oliver.eftevaag@qt.io>
(cherry picked from commit 97eaba8998cad554e6466831ea8977f26c9e0de5)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions