[PyQt] Hover Event for a QGraphicsItem

[sw33tz]

Thanks for replying...I've updated my code but I still cant get it to work:

class graphics_Object(QtGui.QGraphicsPixmapItem):
    def __init__(self, parent=None):
        super(switch_Object, self).__init__(parent)
        pixmap = QtGui.QPixmap("item.png")
        self.graphics_pixItem =
QtGui.QGraphicsPixmapItem(pixmap.scaled(40, 40,
QtCore.Qt.KeepAspectRatio))
        self.graphics_pixItem.setFlag(QtGui.QGraphicsPixmapItem.ItemIsSelectable)
        self.graphics_pixItem.setFlag(QtGui.QGraphicsPixmapItem.ItemIsMovable)
        self.graphics_pixItem.setAcceptHoverEvents(True)


    def hoverEnterEvent(self, event):
        print 'hello'
class graphicsScene(QtGui.QGraphicsScene):
    def __init__(self, parent=None):
        super(graphicsScene, self).__init__(parent)

    def mousePressEvent(self, event):
        self.graphics_item = graphics_Object()
    def mouseReleaseEvent(self, event)
        self.addItem(self.self.graphics_item.graphics_pixItem)
        self.graphics_item.self.graphics_pixItem.setPos(event.scenePos())
class Form(QtGui.QMainWindow):
    def __init__(self):
        super(Form, self).__init__()
        self.ui = uic.loadUi('form.ui')

        self.scene = graphicsScene()
        self.ui.view.setScene(self.scene)

        self.setMouseTracking(True)


On Sat, May 7, 2016 at 10:55 PM, Elvis Stansvik [via Python] <
ml-node+s6n5190286h77 at n6.nabble.com> wrote:

> Hi Nesibe,
>
> 2016-05-07 19:46 GMT+02:00 sw33tz <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5190286&i=0>>:
> > I want some small text to pop up when I have my curser over a
> QGraphicsItem
> > in my QGraphicsScene. I have a class that inherits from QGraphicsItem,
> and
> > this represents my graphical items in the scene.
> >
> > I tried using the QGraphicsItem.hoverEnterEvent and I also set the
> > setAcceptHoverEvents(True), but I still can't enable that hover event. I
> > also came across an event filter method but I'm not sure where to
> implement
> > it.
>
> This seems to work here:
>
>
> test.py:
>
> from sys import argv, exit
>
> from PyQt5.QtCore import Qt
> from PyQt5.QtWidgets import QApplication
> from PyQt5.QtWidgets import QGraphicsEllipseItem
> from PyQt5.QtWidgets import QGraphicsScene
> from PyQt5.QtWidgets import QGraphicsView
> from PyQt5.QtWidgets import QMainWindow
>
>
> class MyItem(QGraphicsEllipseItem):
>
>     def __init__(self, parent=None):
>         super(MyItem, self).__init__(parent)
>
>         self.setRect(50, 50, 50, 50)
>         self.setBrush(Qt.red)
>         self.setAcceptHoverEvents(True)
>
>     def hoverEnterEvent(self, event):
>         print('hover enter')
>
>     def hoverLeaveEvent(self, event):
>         print('hover leave')
>
>
> app = None
>
>
> def main():
>     global app
>
>     app = QApplication(argv)
>
>     scene = QGraphicsScene()
>     scene.addItem(MyItem())
>
>     view = QGraphicsView()
>     view.setScene(scene)
>
>     window = QMainWindow()
>     window.setCentralWidget(view)
>     window.show()
>
>     exit(app.exec_())
>
>
> if __name__ == '__main__':
>     main()
>
>
> Hope that helps.
>
> Best regards,
> Elvis
>
> >
> > Should I install the event filter in the QGraphicsItem class, or the
> scene?
> > I tried both and I'm still not getting the desired result. I want to be
> able
> > to hover over all the items in the scene.
> >
> >
> > class HoverEventFilter(QtCore.QObject):
> >     def eventFilter(self, receiver, event):
> >         if (event.type() == QtCore.QEvent.HoverEnter):
> >             # this is for test purposes
> >             print 'hover event'
> >             return True
> >         else:
> >             # Call Base Class Method to Continue Normal Event Processing
> >             return super(HoverEventFilter, self).eventFilter(receiver,
> > event)
> >
> >
> >
> > --
> > View this message in context:
> http://python.6.x6.nabble.com/Hover-Event-for-a-QGraphicsItem-tp5190283.html
> > Sent from the PyQt mailing list archive at Nabble.com.
> > _______________________________________________
> > PyQt mailing list    [hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5190286&i=1>
> > https://www.riverbankcomputing.com/mailman/listinfo/pyqt
> _______________________________________________
> PyQt mailing list    [hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5190286&i=2>
> https://www.riverbankcomputing.com/mailman/listinfo/pyqt
>
> ------------------------------
> If you reply to this email, your message will be added to the discussion
> below:
>
> http://python.6.x6.nabble.com/Hover-Event-for-a-QGraphicsItem-tp5190283p5190286.html
> To unsubscribe from Hover Event for a QGraphicsItem, click here
> <http://python.6.x6.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=5190283&code=bnlhdnV6Lm5tMjBAZ21haWwuY29tfDUxOTAyODN8LTE2MTY4NDE4NTE=>
> .
> NAML
> <http://python.6.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>




--
View this message in context: http://python.6.x6.nabble.com/Hover-Event-for-a-QGraphicsItem-tp5190283p5190289.html
Sent from the PyQt mailing list archive at Nabble.com.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://www.riverbankcomputing.com/pipermail/pyqt/attachments/20160507/d8ad3fe5/attachment-0001.html>