拖动画布，添加节点到画布左侧失败

[wiserliu]

拖动画布，添加节点到画布左侧失败

[wiserliu]

这是项目给出的示例

[gzhanghui]

在dragPanelItemAddNode.js 中有这么一段代码

onMouseUp (e) {
  if (this.graph.get('addNodeDragging')) {
    const p = this.graph.getPointByClient(e.clientX, e.clientY);
    ......
  }
},

这样写可以避免这种情况

const p = this.graph.getPointByClient(e.clientX, e.clientY);
const { x, y } = this.graph.getCanvasByPoint(p.x, p.y);