node.py 文件源码

def paint(self,painter,option, widget):   
        blackPen = QtGui.QPen()
        whitePen = QtGui.QPen()
        blackPen.setWidth(1)
        whitePen.setWidth(1)
        blackPen.setColor(QtGui.QColor("black"))
        whitePen.setColor(QtGui.QColor("white"))

        if self.isSelected():
            gradient = QtGui.QLinearGradient(QtCore.QPointF(0, 0), QtCore.QPointF(0, 20))
            gradient.setColorAt(0, QtGui.QColor(220,170,50))
            gradient.setColorAt(0.3, QtGui.QColor(220,170,50))
            gradient.setColorAt(1, QtGui.QColor(170,150,40))
            #brush = QtGui.QBrush(gradient)
            #brush.setStyle(QtCore.Qt.LinearGradientPattern)
            brush = QtGui.QBrush(QtGui.QColor(220,160,50))


        else:
            gradient = QtGui.QLinearGradient(QtCore.QPointF(0, 0), QtCore.QPointF(0, 20))
            gradient.setColorAt(0, QtGui.QColor(55,55,55))
            gradient.setColorAt(0.3, QtGui.QColor(60,60,60))
            gradient.setColorAt(1, QtGui.QColor(50,50,50))
            #brush = QtGui.QBrush(gradient)
            #brush.setStyle(QtCore.Qt.LinearGradientPattern)
            #brush = QtGui.QBrush(QtGui.QColor(50,50,50))
            brush = QtGui.QBrush(QtGui.QColor(32,61,74))



        font = QtGui.QFont()
        font.setFamily("Helvetica")
        font.setStyleStrategy(QtGui.QFont.PreferAntialias)
        font.setPointSize(14)


        painter.setBrush(brush)
        painter.setPen(blackPen)
        painter.setFont(font)

        painter.drawRoundedRect(self.rect,5,5)

        #pen.setColor(QtGui.QColor("white"))
        if self.scale > 0.75:
            painter.setPen(whitePen)
            painter.drawText(self.rect, QtCore.Qt.AlignCenter,self.name())