Qt 图形视图架构简介与场景应用编码实现

令狐掌门发布时间：2022-05-02 18:01:49 ，浏览量：1

一、什么时候需要使用GraphicsView
二、GraphicsView基本组成
- 2.1 场景QGraphicsScene
- 2.2 视图QGraphicsView
- - 场景在视图中的显示时的两种情况
- 2.3 图形项QGraphicsItem
三、Graphics View 的坐标系统
- 图形项坐标
- 视图坐标
- 场景坐标
- 坐标映射
四、代码编写
五、应用场景
- （1）、绘制基本图元
- （2）、实现矩形拉伸旋转
六、源码链接

一、什么时候需要使用GraphicsView

在paintEvent()方法

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Qt 图形视图架构简介与场景应用编码实现

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