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<template>
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<view class="u-swiper-indicator">
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<view
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class="u-swiper-indicator__wrapper"
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v-if="indicatorMode === 'line'"
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:class="[`u-swiper-indicator__wrapper--${indicatorMode}`]"
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:style="{
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width: $u.addUnit(lineWidth * length),
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backgroundColor: indicatorInactiveColor
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}"
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>
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<view
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class="u-swiper-indicator__wrapper--line__bar"
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:style="[lineStyle]"
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></view>
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</view>
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<view
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class="u-swiper-indicator__wrapper"
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v-if="indicatorMode === 'dot'"
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>
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<view
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class="u-swiper-indicator__wrapper__dot"
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v-for="(item, index) in length"
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:key="index"
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:class="[index === current && 'u-swiper-indicator__wrapper__dot--active']"
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:style="[dotStyle(index)]"
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>
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</view>
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</view>
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</view>
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</template>
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<script>
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import props from './props.js';
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/**
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* SwiperIndicator 轮播图指示器
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* @description 该组件一般用于导航轮播，广告展示等场景,可开箱即用，
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* @tutorial https://www.uviewui.com/components/swiper.html
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* @property {String | Number} length 轮播的长度（默认 0 ）
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* @property {String | Number} current 当前处于活动状态的轮播的索引（默认 0 ）
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* @property {String} indicatorActiveColor 指示器非激活颜色
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* @property {String} indicatorInactiveColor 指示器的激活颜色
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* @property {String} indicatorMode 指示器模式（默认 'line' ）
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* @example <u-swiper :list="list4" indicator keyName="url" :autoplay="false"></u-swiper>
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*/
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export default {
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name: 'u-swiper-indicator',
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
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data() {
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return {
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lineWidth: 22
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}
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},
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computed: {
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// 指示器为线型的样式
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lineStyle() {
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let style = {}
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style.width = uni.$u.addUnit(this.lineWidth)
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style.transform = `translateX(${ uni.$u.addUnit(this.current * this.lineWidth) })`
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style.backgroundColor = this.indicatorActiveColor
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return style
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},
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// 指示器为点型的样式
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dotStyle() {
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return index => {
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let style = {}
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style.backgroundColor = index === this.current ? this.indicatorActiveColor : this.indicatorInactiveColor
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return style
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}
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}
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},
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}
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</script>
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<style lang="scss" scoped>
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@import "../../libs/css/components.scss";
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.u-swiper-indicator {
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&__wrapper {
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@include flex;
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&--line {
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border-radius: 100px;
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height: 4px;
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&__bar {
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width: 22px;
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height: 4px;
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border-radius: 100px;
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background-color: #FFFFFF;
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transition: transform 0.3s;
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}
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}
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&__dot {
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width: 5px;
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height: 5px;
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border-radius: 100px;
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margin: 0 4px;
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&--active {
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width: 12px;
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}
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}
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}
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}
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</style>
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