ToDoList.py 文件源码

def paintEvent(self, event):
        '''Paint the button grey if not highlighted, else yellow'''

        painter = QtGui.QPainter(self)
        colour = QtGui.QColor(247, 147, 30, 150)
        gradient = QtGui.QLinearGradient(QtCore.QPoint(0,0), QtCore.QPoint(self.width()/2, 0))
        gradient.setColorAt(0, QtCore.Qt.transparent)
        gradient.setColorAt(1, colour)
        gradient.setSpread(QtGui.QGradient.ReflectSpread)
        painter.setBrush(QtGui.QBrush(gradient))
        painter.setPen(QtCore.Qt.transparent)
        rect = QtCore.QRect(0,0,self.width(),self.height())
        painter.drawRect(rect)