Starting Point of Rectangle in RubberBand implementation

[cdemirkir]

Hello everyone
I've tested the following RubberBand code for an image viewer. But RubberBand rectangle starts at a point a little below the mouse cursor icon instead of at the tip point mouse cursor icon. What can be the reason for this and How can I fix this situation ?

Sincerely
Cem

void ImageMarker::mousePressEvent(QMouseEvent *event)
{
origin = event->pos();

if (!rubberBand)
{
rubberBand = new QRubberBand(QRubberBand::Rectangle, imageLabel);
}

rubberBand->setGeometry(QRect(origin, QSize()));
rubberBand->show();
}

void ImageMarker::mouseMoveEvent(QMouseEvent *event)
{
rubberBand->setGeometry(QRect(origin, event->pos()));
}

void ImageMarker::mouseReleaseEvent(QMouseEvent *event)
{
rubberBand->hide();
}

[guilugi]

Hello,

You can use
QCursor::pos() to have the exact position pointed by the cursor.

[Gopala Krishna]

You are passing imageLabel as parent of rubberband instead of this(ImageMarker) and hence the coordinates differ. Try setting this as rubberBand's parent.
Another way is to map event->pos() to the imageLabel if you want rubberBand's parent to be imageLabel.

Please wrap the code you post with code tags :)

[cdemirkir]

Thanks for your reply, How can I map event->pos() to the imageLabel ?

[Gopala Krishna]

QWidget::mapTo
in your case imageLabel->mapTo..