Clear selection - no work

[manueletes]

Hello, I have managed to make the circles change color when selecting them using 'QRubberBand', but when I try to clear the selection it does not work

from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
class Boton(QGraphicsItem):
    def __init__(self,parent,size,X,Y,name):
        super(Boton,self).__init__()
        self.setFlag(QGraphicsItem.ItemIsSelectable, True)        
        self.parent=parent
        self.globalRec=QRectF(0,0,size,size)
        self.setPos(X,Y)
        self.parent._scene.addItem(self)
    def cambi(self,val):
        if val ==0:
            self.parent.select=0
        else:
            self.parent.select=1
    def paint(self,painter,option,widget):
        if self.parent.select==0:
            painter.setBrush(self.parent.brush2)
        if self.parent.select==1:
            painter.setBrush(self.parent.brush1)       
        painter.setPen(self.parent.pen)
        painter.drawEllipse(self.globalRec)
    def boundingRect(self):
        return self.globalRec
class Viewer(QGraphicsView):
    rectChanged = pyqtSignal(QRect)
    def __init__(self, parent):
        super(Viewer, self).__init__(parent)
        self.select=0   
        self.misItems=None
        color2 = QColor(5,100,70)
        color3 = QColor(155,100,70)
        color1 = QColor(225,100,70)
        self.brush1=QBrush(color1)
        self.brush2=QBrush(color2)
        self.origin = QPoint()
        self.poi=QPoint()
        self.pen=QPen()        
        self.pen.setWidth(2)
        self.pen.setColor(color3)
        self.rubberBand = QRubberBand(QRubberBand.Rectangle, self)
        self.setMouseTracking(True)
        self.changeRubberBand = False
        self._scene = QGraphicsScene(self)
        self.setScene(self._scene)
        Boton(self,20,0,0,'btn1')
        Boton(self,20,0,80,'btn2')
        Boton(self,20,0,-80,'btn3')

    def mousePressEvent(self, event):
        if event.button() == Qt.LeftButton:
            self.origin = event.pos()
            self.rubberBand.setGeometry(QRect(self.origin, QSize()))
            self.rectChanged.emit(self.rubberBand.geometry())
            self.rubberBand.show()
            self.changeRubberBand = True
            return
        super(Viewer, self).mousePressEvent(event)
    def mouseMoveEvent(self, event):
        if self.changeRubberBand:
            self.rubberBand.setGeometry(
                QRect(self.origin, event.pos()).normalized())
            self.rectChanged.emit(self.rubberBand.geometry())
        super(Viewer, self).mouseMoveEvent(event)
    def mouseReleaseEvent(self, event):
        if event.button() == Qt.LeftButton:
            self.changeRubberBand = False
            if self.rubberBand.isVisible():
                self.rubberBand.hide()
                rect = self.rubberBand.geometry()
                rect_scene = self.mapToScene(rect).boundingRect()
                selected = self.scene().items(rect_scene)
#event SELECT items Buttons:
                if selected:
                    self.misItems=selected
                    for item in selected:
                        item.cambi(1)               
                else:
                    for item in self.misItems:
                        item.cambi(0)
        super(Viewer, self).mouseReleaseEvent(event)


class Window(QWidget):
    def __init__(self):
        super(Window, self).__init__()
        self.viewer = Viewer(self)
        VBlayout = QVBoxLayout(self)
        VBlayout.addWidget(self.viewer)
        VBlayout.setContentsMargins(0,0,0,0)
        self.setFixedSize(400,400)
if __name__ == "__main__":
    import sys
    app = QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec_())

link text

[SGaist]

Hi and welcome to devnet,

Can you explain why you are abusing "parent" as you do ?

Also, what exactly are you trying to achieve ? It seems that the QGraphicsElipseItem would do what you need.