Mouse event is not working for "pyqtgraph.graphicsItems.TextItem" and "pyqtgraph.graphicsItems.ArrowItem"

[Rakesh Mishra]

Hi Luke,

I want to use Mouse events for TextItem and ArrowItem. but it's not working for me could  you please help me figure out the  problem, here is my Code

class MyTextItem(TextItem):
    def __init__(self, text='', color=(200,200,200), html=None, anchor=(0,0), border=None, fill=None, angle=0):
        TextItem.__init__(self, text, color, html, anchor, border, fill, angle)
       
    def mousePressEvent(self, *args, **kwargs):
        print "mouse has pressed"
        return TextItem.mousePressEvent(self, *args, **kwargs)
  
    def mouseDragEvent(self, ev):
        print "Drag Event"
  

class MyArrow(ArrowItem):
    def __init__(self, **opts):
        ArrowItem.__init__(self,**opts)
        self.setZValue(-1)
    def mousePressEvent(self, *args, **kwargs):
        print " mouse clicked "
        return ArrowItem.mousePressEvent(self, *args, **kwargs)
    def mouseMoveEvent(self, *args, **kwargs):
        print "mouse is moving"
        return ArrowItem.mouseMoveEvent(self, *args, **kwargs)

Thanks
Rakesh
  

[Luke Campagnola]

On Fri, Mar 28, 2014 at 1:39 AM, Rakesh Mishra <mishra.r...@gmail.com> wrote:

I want to use Mouse events for TextItem and ArrowItem. but it's not working for me could  you please help me figure out the  problem

 Thanks, Rakesh. I can confirm this is a bug. Will reply here when a fix is pushed.

[ivan....@gmail.com]

I'm trying to do the same thing. Luke, could you please explain why it doesn't work and what the bug is?

 

[vas...@gmail.com]

To try with something like http://stackoverflow.com/questions/27222016/pyqt-mousepressevent-get-object-that-was-clicked-on?

Good luck,

Vasilije

On Thu, Aug 4, 2016 at 3:52 PM, <ivan....@gmail.com> wrote:

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[ivan....@gmail.com]

Thanks, Vasilije. That link gave me most of the information I needed.

To implement, I added a pg.SignalProxy to my plot with the signal, self.plot.scene().sigMouseClicked and the slot self.mouseClicked.

In my __init__ method of the class:

    self.window = pg.GraphicsWindow(...)

    self.plot = self.window.addPlot(...)

    self.proxyMouse = pg.SignalProxy(self.plot.scene().sigMouseClicked, slot=self.mouseClicked)

The in my mouseClicked method:

def mouseClicked(self, ev):

    if ev[0].button() != 1: return

    pos = ev[0].scenePos()

    items = self.window.scene().items(pos, QtCore.Qt.IntersectsItemBoundingRect, QtCore.DescendingOrder)

    if isinstance(items[0], QGraphicsTextItem):

        widget = items[0].parentItem()

widget is now the TextItem that was clicked on. Note that the default ItemSelectionMode does not catch the object.

--

Ivan