增加晶全app静态页面
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node_modules/vk-uview-ui/components/u-read-more/u-read-more.vue
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vendored
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node_modules/vk-uview-ui/components/u-read-more/u-read-more.vue
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<template>
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<view class="">
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<view class="u-content" :class="[elId]" :style="{
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height: isLongContent && !showMore ? showHeight + 'rpx' : 'auto',
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textIndent: textIndent
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}">
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<slot></slot>
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</view>
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<view @tap="toggleReadMore" v-if="isLongContent" class="u-content__showmore-wrap"
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:class="{ 'u-content__show-more': showMore }"
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:style="[innerShadowStyle]">
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<text class="u-content__showmore-wrap__readmore-btn" :style="{
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fontSize: fontSize + 'rpx',
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color: color
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}">
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{{ showMore ? openText : closeText }}
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</text>
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<view class="u-content__showmore-wrap__readmore-btn__icon u-flex">
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<u-icon :color="color" :size="fontSize" :name="showMore ? 'arrow-up' : 'arrow-down'"></u-icon>
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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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/**
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* readMore 阅读更多
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* @description 该组件一般用于内容较长，预先收起一部分，点击展开全部内容的场景。
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* @tutorial https://www.uviewui.com/components/readMore.html
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* @property {String Number} show-height 内容超出此高度才会显示展开全文按钮，单位rpx（默认400）
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* @property {Boolean} toggle 展开后是否显示收起按钮（默认false）
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* @property {String} close-text 关闭时的提示文字（默认“展开阅读全文”）
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* @property {String Number} font-size 提示文字的大小，单位rpx（默认28）
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* @property {String} text-indent 段落首行缩进的字符个数（默认2em）
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* @property {String} open-text 展开时的提示文字（默认“收起”）
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* @property {String} color 提示文字的颜色（默认#2979ff）
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* @example <u-read-more><rich-text :nodes="content"></rich-text></u-read-more>
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*/
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export default {
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name: "u-read-more",
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emits: ["open", "close"],
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props: {
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// 默认的显示占位高度，单位为rpx
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showHeight: {
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type: [Number, String],
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default: 400
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},
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// 展开后是否显示"收起"按钮
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toggle: {
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type: Boolean,
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default: false
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},
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// 关闭时的提示文字
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closeText: {
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type: String,
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default: '展开阅读全文'
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},
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// 展开时的提示文字
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openText: {
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type: String,
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default: '收起'
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},
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// 提示的文字颜色
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color: {
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type: String,
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default: '#2979ff'
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},
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// 提示文字的大小
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fontSize: {
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type: [String, Number],
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default: 28
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},
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// 是否显示阴影
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shadowStyle: {
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type: Object,
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default () {
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return {
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backgroundImage: "linear-gradient(-180deg, rgba(255, 255, 255, 0) 0%, #fff 80%)",
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paddingTop: "300rpx",
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marginTop: "-300rpx"
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}
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}
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},
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// 段落首行缩进的字符个数
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textIndent: {
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type: String,
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default: '2em'
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},
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// open和close事件时，将此参数返回在回调参数中
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index: {
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type: [Number, String],
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default: ''
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}
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},
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watch: {
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paramsChange(val) {
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this.init();
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}
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},
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computed: {
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paramsChange() {
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return `${this.toggle}-${this.showHeight}`;
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},
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// 展开后无需阴影，收起时才需要阴影样式
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innerShadowStyle() {
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if (this.showMore) return {};
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else return this.shadowStyle
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}
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},
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data() {
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return {
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isLongContent: false, // 是否需要隐藏一部分内容
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showMore: false, // 当前隐藏与显示的状态，true-显示，false-收起
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elId: this.$u ? this.$u.guid() : uni.$u.guid(), // 生成唯一class
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};
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},
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mounted() {
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this.$nextTick(() => {
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this.init();
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this.createIntersectionObserver();
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})
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},
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methods: {
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createIntersectionObserver() {
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try {
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const observer = uni.createIntersectionObserver(this);
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observer.relativeToViewport().observe('.u-content', (res) => {
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const { height } = res.intersectionRect;
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//console.log('元素的高度：', height);
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this.init();
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});
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} catch(err){}
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},
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init() {
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this.$uGetRect('.' + this.elId).then(res => {
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// 判断高度，如果真实内容高度大于占位高度，则显示收起与展开的控制按钮
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if (res.height > uni.upx2px(this.showHeight)) {
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this.isLongContent = true;
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this.showMore = false;
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}
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})
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},
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// 展开或者收起
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toggleReadMore() {
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this.showMore = !this.showMore;
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// 如果toggle为false，隐藏"收起"部分的内容
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if (this.toggle == false) this.isLongContent = false;
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// 发出打开或者收齐的事件
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this.$emit(this.showMore ? 'open' : 'close', this.index);
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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/style.components.scss";
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.u-content {
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font-size: 30rpx;
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color: $u-content-color;
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line-height: 1.8;
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text-align: left;
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overflow: hidden;
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&__show-more {
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padding-top: 0;
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background: none;
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margin-top: 20rpx;
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}
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&__showmore-wrap {
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position: relative;
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width: 100%;
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padding-bottom: 26rpx;
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@include vue-flex;
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align-items: center;
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justify-content: center;
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&__readmore-btn {
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@include vue-flex;
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align-items: center;
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justify-content: center;
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line-height: 1;
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&__icon {
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margin-left: 14rpx;
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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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