a2702f6d
 刘淇
巡查计划
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import { defineMixin } from '../vue'
const MIN_DISTANCE = 10
function getDirection(x, y) {
if (x > y && x > MIN_DISTANCE) {
return 'horizontal'
}
if (y > x && y > MIN_DISTANCE) {
return 'vertical'
}
return ''
}
export const touchMixin = defineMixin({
methods: {
getTouchPoint(e) {
if (!e) {
return {
x: 0,
y: 0
}
} if (e.touches && e.touches[0]) {
return {
x: e.touches[0].pageX,
y: e.touches[0].pageY
}
} if (e.changedTouches && e.changedTouches[0]) {
return {
x: e.changedTouches[0].pageX,
y: e.changedTouches[0].pageY
}
}
return {
x: e.clientX || 0,
y: e.clientY || 0
}
},
resetTouchStatus() {
this.direction = ''
this.deltaX = 0
this.deltaY = 0
this.offsetX = 0
this.offsetY = 0
},
touchStart(event) {
this.resetTouchStatus()
const touch = this.getTouchPoint(event)
this.startX = touch.x
this.startY = touch.y
},
touchMove(event) {
const touch = this.getTouchPoint(event)
this.deltaX = touch.x - this.startX
this.deltaY = touch.y - this.startY
this.offsetX = Math.abs(this.deltaX)
this.offsetY = Math.abs(this.deltaY)
this.direction = this.direction || getDirection(this.offsetX, this.offsetY)
}
}
})
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