QtWebEngine duplicate touch events
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Hi,
I have a problem with touch events using a QWebEngineView within my QApplication.
When i click on a button in my web page it is double clicked by Qt for some reason, when i open the same page in Chrome this behavior is not happening.Did someone else bumped into this ? Is there any known solution ?
Thanks, Idan
Update:
Tried the attributes:
WA_AcceptTouchEvents
WA_TouchPadAcceptSingleTouchEvents
AA_SynthesizeMouseForUnhandledTouchEvents
AA_SynthesizeTouchForUnhandledMouseEventsBut none of them works for this issue.
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I am facing the same issue. Tried everything but no success yet.
Related bug:
https://bugreports.qt.io/browse/QTBUG-39814 -
Hi,
I managed to overcome this bug using a QEventFilter and filtering mouse events on the widget and it's children. I will post the code soon.However if you need both your mouse events and touch events handled this is not the solution for you, but maybe a good start.
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Thanks "ageblade". Kindly post the code soon. This has become a bottleneck for me....
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Hi, sorry for the delay.. but here it is!
This is the code initializing the view in the main function:
@
QWebEngineView view;
view.load(url);
view.show();for (int i = 0; i < view.children().size(); i++)
{
QObject *child = view.children().at(i);
child->installEventFilter(new QMouseEventFilter);
}
@and QMouseEventFilter.h is :
@
#include <QtCore/QEvent>
#include <QtCore/QObject>class QMouseEventFilter : public QObject
{
Q_OBJECT
public:QMouseEventFilter(QObject *parent = 0) : QObject(parent)
{
}protected:
bool eventFilter(QObject * p_obj, QEvent * p_event)
{
if (p_event->type() == QEvent::MouseButtonDblClick ||
p_event->type() == QEvent::MouseButtonPress ||
p_event->type() == QEvent::MouseButtonRelease ||
p_event->type() == QEvent::Wheel)
{
p_event->ignore();
return true;
}
return false;
}
};
@Enjoy
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Hi,
Thanks for your prompt reply, really helped me a lot.
I Updated your code a little bit and now both mouse and touch interaction are going on perfectly fine. Hope you and everyone else can also benefit from it.@bool eventFilter(QObject * p_obj, QEvent * p_event)
{
if (p_event->type() == QEvent::MouseButtonDblClick ||
p_event->type() == QEvent::MouseButtonPress ||
p_event->type() == QEvent::MouseButtonRelease ||
p_event->type() == QEvent::Wheel)
{
QMouseEvent* pMouseEvent = dynamic_cast<QMouseEvent*>(p_event);
if ((pMouseEvent != NULL) && (pMouseEvent->source() == Qt::MouseEventSource::MouseEventSynthesizedBySystem))
{
p_event->ignore();
return true;
}
}
return false;
}@Cheers!
