四零语境前端代码仓库
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const threshold = 50
export default {
props: {
//点击事件位置设置
clickOption: {
type: Object,
default () {
return {
width: uni.upx2px(200),
height: uni.upx2px(200),
left: 'auto',
top: 'auto'
}
}
}
},
computed: {
//点击区域左边位置
clickLeft () {
return typeof this.clickOption.left == 'number' ? this.clickOption.left : (this.windowWidth / 2) - (this.clickOption.width / 2)
},
//点击区域右边位置
clickRight () {
return this.clickLeft + this.clickOption.width
},
//点击区域顶部位置
clickTop () {
return typeof this.clickOption.top == 'number' ? this.clickOption.top : (this.windowHeight / 2) - (this.clickOption.height / 2)
},
//点击区域底部位置
clickBottom () {
return this.clickTop + this.clickOption.height
}
},
data () {
return {
autoplaySync: false,
windowHeight: 0,//组件高度
windowWidth: 0,//组件宽度
clickTime: 0,//点击次数
touchstartX: 0,//触摸开始x轴位置
touchstartY: 0,//触摸开始y轴位置
touchmoveX: 0,//触摸滑动x轴距离
touchmoveY: 0,//触摸滑动y轴距离
touchTime: 0//触摸时间
}
},
methods: {
touchstart (e) {
if ( this.pageType != 'scroll' ) this.autoplaySync = false//如果是翻页阅读关闭自动播放
if ( this.touchTimer ) {//清楚定时任务
clearTimeout(this.touchTimer)
this.touchTimer = null
}
if ( this.longTimer ) {//清楚定时任务
clearTimeout(this.longTimer)
this.longTimer = null
}
const touch = e.touches[0]
this.touchstartX = touch.pageX
this.touchstartY = touch.pageY
//点击在规定区域中
if ( this.touchstartX >= this.clickLeft && this.touchstartX <= this.clickRight && this.touchstartY >= this.clickTop && this.touchstartY <= this.clickBottom) {
this.clickTime++
if ( this.clickTime == 1 ) {//第一次点击
this.touchTimer = setTimeout(() => {
this.touchTime = 300
}, 300)
this.longTimer = setTimeout(() => {
this.touchTime = 500
if ( this.touchmoveX <= threshold && this.touchmoveY <= threshold ) this.$emit('long-click')//抛出长按事件
this.resetTouch()
}, 500)
}
} else {//没有点击在规定区域中直接重置触摸事件
this.resetTouch()
}
},
touchmove (e) {
if ( this.clickTime > 0 ) {
const touch = e.touches[0]
this.touchmoveX = Math.abs(touch.pageX - this.touchstartX)
this.touchmoveY = Math.abs(touch.pageY - this.touchstartY)
}
},
touchend (e) {
if ( this.pageType != 'scroll' ) this.autoplaySync = this.autoplay//如果是横向翻页开启自动播放
if ( this.touchTimer ) {//清楚按下定时任务
clearTimeout(this.touchTimer);
this.touchTimer = null
}
if ( this.longTimer ) {//清楚长按定时任务
clearTimeout(this.longTimer)
this.longTimer = null
}
//点击次数为零或者触摸时间超过300,或者滑动距离超过阙值
if ( this.clickTime == 0 || this.touchTime > 300 || this.touchmoveX > threshold || this.touchmoveY > threshold ) {
this.resetTouch()
return
}
if ( this.clickTime == 1 ) {//第一次点击
this.touchTimer = setTimeout(() => {
this.$emit('single-click')//抛出单击事件
this.resetTouch()
}, 300)
}
if ( this.clickTime == 2 ) {//第二次点击
this.$emit('double-click')//抛出双击事件
this.resetTouch()
}
},
resetTouch () {
this.touchstartX = 0
this.touchstartY = 0
this.touchmoveX = 0
this.touchmoveY = 0
this.touchTime = 0
this.clickTime = 0
}
}
}