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@ -1,10 +1,13 @@
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<template> |
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<sup :class="[prefixCls, className]" :title="titleNumber" :style="styleNumber"> |
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<!-- <span v-if="!count || isNaN(count)">{{count}}</span> --> |
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<span>{{count}}</span> |
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</sup> |
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</template> |
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<script> |
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import StateMixin from '../_util/StateMixin' |
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function getNumberArray (num) { |
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return num |
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? num.toString() |
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.split('') |
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.reverse() |
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.map(i => Number(i)) : [] |
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} |
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export default { |
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name: 'ScrollNumber', |
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props: { |
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@ -17,18 +20,108 @@ export default {
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default: () => ({}), |
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}, |
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}, |
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mixins: [StateMixin], |
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data () { |
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const { count } = this |
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return { |
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animateStarted: true, |
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lastCount: 0, |
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stateCount: count, |
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} |
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}, |
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computed: { |
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watch: { |
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count (newValue, oldValue) { |
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// 复原数字初始位置 |
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this.setState({ |
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animateStarted: true, |
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lastCount: oldValue, |
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}, () => { |
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// 等待数字位置复原完毕 |
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// 开始设置完整的数字 |
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setTimeout(() => { |
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this.setState({ |
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animateStarted: false, |
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stateCount: newValue, |
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}) |
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}, 30) |
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}) |
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}, |
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}, |
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methods: { |
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getPositionByNum (num, i) { |
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const { animateStarted, lastCount, stateCount } = this |
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if (animateStarted) { |
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return 10 + num |
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} |
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const currentDigit = getNumberArray(stateCount)[i] |
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const lastDigit = getNumberArray(lastCount)[i] |
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// 同方向则在同一侧切换数字 |
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if (stateCount > lastCount) { |
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if (currentDigit >= lastDigit) { |
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return 10 + num |
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} |
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return 20 + num |
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} |
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if (currentDigit <= lastDigit) { |
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return 10 + num |
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} |
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return num |
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}, |
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renderNumberList (position) { |
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const childrenArr = new Array(30).fill(1) |
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const childrenHtml = childrenArr.map((item, i) => { |
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const currentClassName = (position === i) ? 'current' : '' |
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return <p key={i.toString()} class={currentClassName}>{i % 10}</p> |
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}) |
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return childrenHtml |
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}, |
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renderCurrentNumber (num, i) { |
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const { animateStarted, prefixCls } = this |
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const position = this.getPositionByNum(num, i) |
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let removeTransition = animateStarted || |
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(getNumberArray(this.lastCount)[i] === undefined) |
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if (!removeTransition) { |
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removeTransition = '' |
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} |
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const styleSpan = { |
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transition: `${removeTransition}` && 'none', |
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msTransform: `translateY(${-position * 100}%)`, |
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WebkitTransform: `translateY(${-position * 100}%)`, |
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transform: `translateY(${-position * 100}%)`, |
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} |
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return ( |
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<span |
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key={i} |
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class={`${prefixCls}-only`} |
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style = {styleSpan} |
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> |
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{ |
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this.renderNumberList(position) |
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} |
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</span> |
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) |
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}, |
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renderNumberElement () { |
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const { stateCount } = this |
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if (!stateCount || isNaN(Number(stateCount))) { |
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return stateCount |
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} |
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return getNumberArray(stateCount) |
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.map((num, i) => this.renderCurrentNumber(num, i)).reverse() |
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}, |
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}, |
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components: { |
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render () { |
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const { prefixCls, className, titleNumber, styleNumber } = this |
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return ( |
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<sup |
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class={[prefixCls, className]} |
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title={titleNumber} |
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style={styleNumber}> |
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{ |
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this.renderNumberElement() |
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} |
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</sup> |
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) |
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}, |
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} |
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</script> |
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tangjinzhou
7 years ago