本文抽象了画面基本元素，设计了一组可组合的图形元件，并给出了用于绘制流程图的几个不同的工具类。

The basal element of picture was abstracted and a group of element of figure was also designed to provide some different tool classes for user to draw flow chart.

youdao

本文抽象了画面基本元素，设计了一组可组合的图形元件，并给出了用于绘制流程图的几个不同的工具类。

The basal element of picture was abstracted and a group of element of figure was also designed to provide some different tool classes for user to draw flow chart.

youdao