[PyQt] item selection in a graphicsscene

[Matteo Boscolo]

Have a look at

http://pythoncad.git.sourceforge.net/git/gitweb.cgi?p=pythoncad/pythoncad;a=blob;f=PythonCAD/Interface/cadscene.py;h=77cf54b821f244975372ed2d025c9c7a90033247;hb=refs/heads/R38

regards,
Matteo

Il 14/09/2012 23:28, Martin Airs ha scritto:
> good day all,
>
> I'm currently writing a Plasmoid for KDE, so I'm not 100% certain who's lap to
> lay this in, but I'll try here first.
>
> I'm using a Plasma.Frame which inherits a QGraphicsWidget, in my subclass I
> have reimplemented the itemChange function so I can set the element prefix of
> the SVG used to paint the frame.
>
> when i press each item with the left mouse button, everything works as
> expected :)
> however if i right click an item, its ElementPrefix changes ok and the menu
> pops up, but the other item that is selected doesn't deselect. and i end up
> with 2 selected items until i click one again.
>
> Martin
>
> here is a snippet of the code...
>
>      def itemChange(self, change, value):
>          if change == QGraphicsItem.ItemSelectedChange:
>              print "selection changed"
>              if value == QVariant(True):
>                 self.border.setElementPrefix("selected")
>              else:
>                 self.border.setElementPrefix("normal")
>              self.update()
>          return value
>
>      def mousePressEvent(self, event):
>          if event.button() == 1:
>              self.setSelected(1)
>              self.update()
>          if event.button() == 2:
>              self.setSelected(1)
>              self.update()
>              self.menu.exec_(QCursor.pos())
>
>
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