how to enable the QListWidget support touch event

xhsoldier

As the title.
Do not use the scroll bar to navigate the item, but just touch the screen to scroll up and down.

Or any other options to implement a list that support touch?(not qml)

mohsen

re-implement a QListWidget class with mouseMove, mouseRelease and mousePress events

xhsoldier

Yes. I do the same. stupid.

chriadam

Do you have to use a QListWidget? If you can use QML instead, try a flickable element.
/edit: hrm, I clearly didn't read your question thoroughly; you said you can't use QML.

andre

Perhaps you should also look for the "flick charm" that was written a few years ago. It could still serve to inspire you.

mbnoimi

I stucked with this issue since months ago :(

May some one help us here and contribute with small snippet?

ltr6

Try QScroller:

http://qt-project.org/doc/qt-5/qscroller.html

This might also help:

http://qt-project.org/forums/viewthread/38529

mbnoimi

[quote author="ltr6" date="1399363630"]Try QScroller:

http://qt-project.org/doc/qt-5/qscroller.html

This might also help:

http://qt-project.org/forums/viewthread/38529[/quote]

Thank you; but I really didn't understand how can I make my QListWidget supports Touch. I really need some simple snippet.

ltr6

There was a snippet, I'll paste it here:

@QScrollerProperties sp;

sp.setScrollMetric(QScrollerProperties::DragVelocitySmoothingFactor, 0.6);
sp.setScrollMetric(QScrollerProperties::MinimumVelocity, 0.0);
sp.setScrollMetric(QScrollerProperties::MaximumVelocity, 0.5);
sp.setScrollMetric(QScrollerProperties::AcceleratingFlickMaximumTime, 0.4);
sp.setScrollMetric(QScrollerProperties::AcceleratingFlickSpeedupFactor, 1.2);
sp.setScrollMetric(QScrollerProperties::SnapPositionRatio, 0.2);
sp.setScrollMetric(QScrollerProperties::MaximumClickThroughVelocity, 0);
sp.setScrollMetric(QScrollerProperties::DragStartDistance, 0.001);
sp.setScrollMetric(QScrollerProperties::MousePressEventDelay, 0.5);

QScroller* scroller = QScroller::scroller(yourListWidget);

scroller->grabGesture(yourListWidget, QScroller::LeftMouseButtonGesture);

scroller->setScrollerProperties(sp);@

On lines 13 and 15 you need to give your list widget as the parameter.

mbnoimi

Thank you a lot; I didn't expect it very easy. I thought the pointed code works for scrolling only.

xhsoldier. May you please set this thread as [SOLVED]