'Make slider range QRect'

def make_slider_range(self, value):

    vsb = self.editor.verticalScrollBar()
    pos1 = self.value_to_position(value, slider=True)
    pos2 = self.value_to_position((value + vsb.pageStep()), slider=True)
    return QRect(1, pos1, (self.WIDTH - 2), ((pos2 - pos1) + 1))
