You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
3.2 KiB
128 lines
3.2 KiB
<script>
|
|
import BaseMixin from '../_util/BaseMixin'
|
|
|
|
function getNumberArray (num) {
|
|
return num
|
|
? num.toString()
|
|
.split('')
|
|
.reverse()
|
|
.map(i => Number(i)) : []
|
|
}
|
|
export default {
|
|
name: 'ScrollNumber',
|
|
props: {
|
|
className: Object,
|
|
prefixCls: String,
|
|
count: [Number, String],
|
|
titleNumber: [Number, String],
|
|
styleNumber: {
|
|
type: Object,
|
|
default: () => ({}),
|
|
},
|
|
},
|
|
mixins: [BaseMixin],
|
|
data () {
|
|
const { count } = this
|
|
return {
|
|
animateStarted: true,
|
|
lastCount: 0,
|
|
stateCount: count,
|
|
}
|
|
},
|
|
watch: {
|
|
count (newValue, oldValue) {
|
|
// 复原数字初始位置
|
|
this.setState({
|
|
animateStarted: true,
|
|
lastCount: oldValue,
|
|
}, () => {
|
|
// 等待数字位置复原完毕
|
|
// 开始设置完整的数字
|
|
setTimeout(() => {
|
|
this.setState({
|
|
animateStarted: false,
|
|
stateCount: newValue,
|
|
})
|
|
}, 30)
|
|
})
|
|
},
|
|
},
|
|
methods: {
|
|
getPositionByNum (num, i) {
|
|
const { animateStarted, lastCount, stateCount } = this
|
|
if (animateStarted) {
|
|
return 10 + num
|
|
}
|
|
const currentDigit = getNumberArray(stateCount)[i]
|
|
const lastDigit = getNumberArray(lastCount)[i]
|
|
// 同方向则在同一侧切换数字
|
|
if (stateCount > lastCount) {
|
|
if (currentDigit >= lastDigit) {
|
|
return 10 + num
|
|
}
|
|
return 20 + num
|
|
}
|
|
if (currentDigit <= lastDigit) {
|
|
return 10 + num
|
|
}
|
|
return num
|
|
},
|
|
renderNumberList (position) {
|
|
const childrenArr = new Array(30).fill(1)
|
|
const childrenHtml = childrenArr.map((item, i) => {
|
|
const currentClassName = (position === i) ? 'current' : ''
|
|
return <p key={i.toString()} class={currentClassName}>{i % 10}</p>
|
|
})
|
|
return childrenHtml
|
|
},
|
|
renderCurrentNumber (num, i) {
|
|
const { animateStarted, prefixCls } = this
|
|
const position = this.getPositionByNum(num, i)
|
|
let removeTransition = animateStarted ||
|
|
(getNumberArray(this.lastCount)[i] === undefined)
|
|
if (!removeTransition) {
|
|
removeTransition = ''
|
|
}
|
|
const styleSpan = {
|
|
transition: `${removeTransition}` && 'none',
|
|
msTransform: `translateY(${-position * 100}%)`,
|
|
WebkitTransform: `translateY(${-position * 100}%)`,
|
|
transform: `translateY(${-position * 100}%)`,
|
|
}
|
|
return (
|
|
<span
|
|
key={i}
|
|
class={`${prefixCls}-only`}
|
|
style = {styleSpan}
|
|
>
|
|
{
|
|
this.renderNumberList(position)
|
|
}
|
|
</span>
|
|
)
|
|
},
|
|
renderNumberElement () {
|
|
const { stateCount } = this
|
|
if (!stateCount || isNaN(Number(stateCount))) {
|
|
return stateCount
|
|
}
|
|
return getNumberArray(stateCount)
|
|
.map((num, i) => this.renderCurrentNumber(num, i)).reverse()
|
|
},
|
|
},
|
|
render () {
|
|
const { prefixCls, className, titleNumber, styleNumber } = this
|
|
return (
|
|
<sup
|
|
class={[prefixCls, className]}
|
|
title={titleNumber}
|
|
style={styleNumber}>
|
|
{
|
|
this.renderNumberElement()
|
|
}
|
|
</sup>
|
|
)
|
|
},
|
|
}
|
|
</script>
|