mp_exhibitor_miniprog/wxcomponents/vant/notice-bar/index.vue

<template>
<uni-shadow-root class="vant-notice-bar-index"><view v-if="show" :class="'custom-class '+(utils.bem('notice-bar', { withicon: mode, wrapable }))" :style="computed.rootStyle({ color, backgroundColor, background })" @click="onClick">
  <van-icon v-if="leftIcon" :name="leftIcon" class="van-notice-bar__left-icon"></van-icon>
  <slot v-else name="left-icon"></slot>

  <view class="van-notice-bar__wrap">
    <view :class="'van-notice-bar__content '+(scrollable === false && !wrapable ? 'van-ellipsis' : '')" :animation="animationData">
      {{ text }}
      <slot v-if="(!text)"></slot>
    </view>
  </view>

  <van-icon v-if="mode === 'closeable'" class="van-notice-bar__right-icon" name="cross" @click.native.stop.prevent="onClickIcon"></van-icon>
  <navigator v-else-if="mode === 'link'" :url="url" :open-type="openType">
    <van-icon class="van-notice-bar__right-icon" name="arrow"></van-icon>
  </navigator>
  <slot v-else name="right-icon"></slot>
</view></uni-shadow-root>
</template>
<wxs src="../wxs/utils.wxs" module="utils"></wxs><wxs src="./index.wxs" module="computed"></wxs>
<script>
import VanIcon from '../icon/index.vue'
global['__wxVueOptions'] = {components:{'van-icon': VanIcon}}

global['__wxRoute'] = 'vant/notice-bar/index'
import { VantComponent } from '../common/component';
import { getRect, requestAnimationFrame } from '../common/utils';
VantComponent({
    props: {
        text: {
            type: String,
            value: '',
            observer: 'init',
        },
        mode: {
            type: String,
            value: '',
        },
        url: {
            type: String,
            value: '',
        },
        openType: {
            type: String,
            value: 'navigate',
        },
        delay: {
            type: Number,
            value: 1,
        },
        speed: {
            type: Number,
            value: 60,
            observer: 'init',
        },
        scrollable: null,
        leftIcon: {
            type: String,
            value: '',
        },
        color: String,
        backgroundColor: String,
        background: String,
        wrapable: Boolean,
    },
    data: {
        show: true,
    },
    created() {
        this.resetAnimation = wx.createAnimation({
            duration: 0,
            timingFunction: 'linear',
        });
    },
    destroyed() {
        this.timer && clearTimeout(this.timer);
    },
    mounted() {
        this.init();
    },
    methods: {
        init() {
            requestAnimationFrame(() => {
                Promise.all([
                    getRect(this, '.van-notice-bar__content'),
                    getRect(this, '.van-notice-bar__wrap'),
                ]).then((rects) => {
                    const [contentRect, wrapRect] = rects;
                    const { speed, scrollable, delay } = this.data;
                    if (contentRect == null ||
                        wrapRect == null ||
                        !contentRect.width ||
                        !wrapRect.width ||
                        scrollable === false) {
                        return;
                    }
                    if (scrollable || wrapRect.width < contentRect.width) {
                        const duration = ((wrapRect.width + contentRect.width) / speed) * 1000;
                        this.wrapWidth = wrapRect.width;
                        this.contentWidth = contentRect.width;
                        this.duration = duration;
                        this.animation = wx.createAnimation({
                            duration,
                            timingFunction: 'linear',
                            delay,
                        });
                        this.scroll(true);
                    }
                });
            });
        },
        scroll(isInit = false) {
            this.timer && clearTimeout(this.timer);
            this.timer = null;
            this.setData({
                animationData: this.resetAnimation
                    .translateX(isInit ? 0 : this.wrapWidth)
                    .step()
                    .export(),
            });
            requestAnimationFrame(() => {
                this.setData({
                    animationData: this.animation
                        .translateX(-this.contentWidth)
                        .step()
                        .export(),
                });
            });
            this.timer = setTimeout(() => {
                this.scroll();
            }, this.duration + this.data.delay);
        },
        onClickIcon(event) {
            if (this.data.mode === 'closeable') {
                this.timer && clearTimeout(this.timer);
                this.timer = null;
                this.setData({ show: false });
                this.$emit('close', event.detail);
            }
        },
        onClick(event) {
            this.$emit('click', event);
        },
    },
});
export default global['__wxComponents']['vant/notice-bar/index']
</script>
<style platform="mp-weixin">
@import '../common/index.css';.van-notice-bar{align-items:center;background-color:var(--notice-bar-background-color,#fffbe8);color:var(--notice-bar-text-color,#ed6a0c);display:flex;font-size:var(--notice-bar-font-size,14px);height:var(--notice-bar-height,40px);line-height:var(--notice-bar-line-height,24px);padding:var(--notice-bar-padding,0 16px)}.van-notice-bar--withicon{padding-right:40px;position:relative}.van-notice-bar--wrapable{height:auto;padding:var(--notice-bar-wrapable-padding,8px 16px)}.van-notice-bar--wrapable .van-notice-bar__wrap{height:auto}.van-notice-bar--wrapable .van-notice-bar__content{position:relative;white-space:normal}.van-notice-bar__left-icon{align-items:center;display:flex;margin-right:4px;vertical-align:middle}.van-notice-bar__left-icon,.van-notice-bar__right-icon{font-size:var(--notice-bar-icon-size,16px);min-width:var(--notice-bar-icon-min-width,22px)}.van-notice-bar__right-icon{position:absolute;right:15px;top:10px}.van-notice-bar__wrap{flex:1;height:var(--notice-bar-line-height,24px);overflow:hidden;position:relative}.van-notice-bar__content{position:absolute;white-space:nowrap}.van-notice-bar__content.van-ellipsis{max-width:100%}
</style>