[Interest] How to handle Touch Input on C++ side when extending QQuickItem

[Alexandru Croitor]

Hi.

What platform are you testing on?


> On 20 Apr 2017, at 10:26, Nuno Santos <nunosantos at imaginando.pt> wrote:
> 
> Hi,
> 
> I would like to understand how can I handle a QQuickItem touch input when extending QQuickItem and creating my own item in C++
> 
> I can’t find documentation that explains this, neither examples. I have tried the following and none have worked.
> 
> What am I missing?
> 
> // Implementation
> 
> MyItem::MyItem(QQuickItem* parent) :
>    QQuickItem(parent)
> {
>    setAcceptedMouseButtons(Qt::LeftButton);
>    setFiltersChildMouseEvents(true);
>    setKeepTouchGrab(true);
> }
> 
> // Header
> 
> protected:
>    void mousePressEvent(QMouseEvent *event) {
>        QQuickItem::mousePressEvent(event);
> 
>        qDebug() << "mousePressEvent" << event->pos();
>    }
> 
>    void mouseMoveEvent(QMouseEvent *event) {
>        QQuickItem::mouseMoveEvent(event);
> 
>        qDebug() << "mouseMoveEvent" << event->pos();
>    }
> 
>    void mouseReleaseEvent(QMouseEvent *event) {
>        QQuickItem::mouseReleaseEvent(event);
> 
>        qDebug() << "mouseReleaseEvent" << event->pos();
>    }
> 
>    void mouseReleaseEvent();
> 
>    void touchEvent(QTouchEvent* event) {
>        qDebug() << "touch event" << event;
>    }
> 
>    bool eventFilter(QObject *, QEvent *event)
>    {
>        qDebug() << "processing TouchUpdate...";
> 
>        if (event->type() == QEvent::TouchUpdate) {
>        }
>        // other Touch events here...
> 
>        return false;
>    }
> 
> Thanks,
> 
> Regards,
> 
> Nuno
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