canvas_variant.py 文件源码

def addRectangle(self):
        item = QtCanvasRectangle(rand() % self.canvas.width(), rand() % self.canvas.height(), 50, 50, self.canvas)
        item.setBrush(QBrush(QColor(rand() % 32 * 8, rand() % 32 * 8, rand() % 32 * 8)))
        item.setPen(QPen(QColor(rand() % 32*8, rand() % 32*8, rand() % 32*8), 4))
        item.setZ(rand() % 256)
        item.show()
        return item