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Some Pointer Handlers can perform the desired interaction using only
passive grabs. When such a handler is used to modify behavior of
another event-handling Item or Handler which needs to take the
exclusive grab, this allows them to cooperate: both can see the
updates, and neither prevents delivery of events to both.
Change-Id: I312cc301c52fcdf805245bbe0ac60fd28f92c01f
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
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even if all points are accepted or grabbed. A passive grab isn't much
good if there are cases where the handler is prevented from monitoring.
This enables e.g. the PinchHandler to steal the grab when the right
number of touchpoints are present and have moved past the drag threshold,
and enables completion of a couple of autotests.
Change-Id: I78dc6fc585f80bfb3c13e0c6e757ef815fb94afe
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
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For consistency we use QVector2D to represent relative movements in all
Pointer Handlers.
Change-Id: I23dc20c360b482a995d232e8a6d7e87d9bd8f600
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
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Change-Id: I46f7e2c16b775723a08aa192845d490046231990
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
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