vue 使用 panzoom

1.npm install panzoom --save 或者 yarn add panzoom
2.在界面中引用 import panzoom from "panzoom";

3. 
   

   
   

4.initPanZoom() {
const mainContainer =document.getElementById(''mainContainer")
const mainContainerWrap = mainContainer.parentNode
const pan = panzoom(mainContainer, {
smoothScroll: false,
bounds: true,
// autocenter: true,
zoomDoubleClickSpeed: 1,
minZoom: 0.5,
maxZoom: 1,
})
this.jsPlumb.mainContainerWrap = mainContainerWrap
this.jsPlumb.pan = pan
// 缩放时设置jsPlumb的缩放比率
pan.on('zoom', e => {
const {scale} = e.getTransform()
this.jsPlumb.setZoom(scale)
})
// 平移时设置鼠标样式
mainContainerWrap.style.cursor = 'grab'
mainContainerWrap.addEventListener('mousedown', function wrapMousedown() {
this.style.cursor = 'grabbing'
mainContainerWrap.addEventListener('mouseout', function wrapMouseout() {
this.style.cursor = 'grab'
})
})
mainContainerWrap.addEventListener('mouseup', function wrapMouseup() {
this.style.cursor = 'grab'
})
},