Flickable: use wheel event pixel deltas when available

Flickable can now handle wheel events which come from touchpads,
providing pixel deltas instead of angle deltas.  It will interpret
them as distance to flick, rather than using an average-velocity
physics model as it does when handling events from a physical mouse
wheel. This enables much finer control and limits the tendency
to "zing" way out of bounds accidentally.  It is achieved by
refactoring the direct-drag code which is needed for mouse dragging
and for touchpad gesture dragging (and eventually touchscreen dragging)
into a new internal drag() method.

[ChangeLog][QtQuick][Flickable] Flickable handles pixel deltas from
trackpad gestures as drags, for a more native feel

Task-number: QTBUG-22407
Change-Id: Ia613ddb25f46d452603f7cb567b74e80c95a346c
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>

0 files changed, 0 insertions, 0 deletions