添加重新画线的基本方法以供调用
Merge branch 'dev' of https://github.com/lln7777/zhuyun into sx_func
fix缩放划线
Merge branch 'sx_func' into dev
Merge branch 'feature/jack' of https://github.com/lln7777/zhuyun into feature/jack
Merge branch 'feature/jack' into dev
添加一个layer使画布始终在最下层
Merge branch 'feature/twolayer' into dev
修正放大缩小画布的方法
Merge branch 'feature/scale' into dev
层的四个角放进一个组中
蒙板半透明
Merge branch 'feature/transparent' into dev
Merge branch 'sx_func' of https://github.com/lln7777/zhuyun into dev
四个角放进一个组中，方便使用事件
Merge branch 'sx_func' of https://github.com/lln7777/zhuyun into dev
fix 四个角+连线 bug
fix 点击组件时，层上的四个角出现问题
Merge branch 'sx_func' into dev
点击层时，标志画线；添加移动设备的触发事件（待测试）