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That is, from the time between the last mouse move event to the mouse
release, the velocity will be linearly discounted/depreciated until it
reaches 0 at QML_FLICK_VELOCITY_DECAY_TIME, which is currently 50 ms.
50 ms seems like a long time if the user meant to flick and release
immediately (in practice it might be more like 4 ms), and also a
short time if the user meant to "dwell" before releasing.
If we try to translate the fake physics to real physics, this would be
approximately equivalent to saying that if you slide a flat plate on an
air hockey table with one finger, and then stop suddenly, its momentum
_would_ cause it to keep moving under your finger for up to 50ms (except
that it doesn't, because our timeline doesn't "tick" until after the
release); and yet if you hold it for longer than 50ms, it will stop
right on the spot. That's not quite realistic, but feels OK for fake
physics (like the rest of the physics in Qt Quick).
Also add the qt.quick.pathview logging category, which will just log
the velocity calculations for now (but is intended for anything else
in PathView that seems worth logging later on).
Task-number: QTBUG-77173
Task-number: QTBUG-59052
Change-Id: Ie86f18d3b3305874b698c848290e0fd3beda94de
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>
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The last remnants were removed from qtbase in 5.7 making this all dead code,
so match here too.
Change-Id: I10f3f1c614562f2a97ade7cdf5002065d6f79e07
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: Ic36f1a0a1436fe6ac6eeca8c2375a79857e9cb12
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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Task-number: QTBUG-48594
Change-Id: Ifc207938de7f0c8995fc712df92665f222612647
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
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Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Change-Id: I61120571787870c0ed17066afb31779b1e6e30e9
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
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- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3 & LICENSE.GPLv2
- Removed LICENSE.GPL
Change-Id: I84a565e2e0caa3b76bf291a7d188a57a4b00e1b0
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
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Due to the high resolution the display default flicking speed
is rather slow. This change introduces increased values of
QML_FLICK_DEFAULTMAXVELOCITY and QML_FLICK_DEFAULTDECELERATION
which feel closer to the native experience.
Also cleans up the flick variables a little by moving them to
their own header, so that QQuickPathView can also benefit from
the improved behavior on BB10.
Change-Id: I80878d4cc2a53a8f530b1dc8674f729f70a83119
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
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