vant

utils/dist/notice-bar/index.d.ts

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+export {};

utils/dist/notice-bar/index.js

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+import { VantComponent } from '../common/component';
+const FONT_COLOR = '#ed6a0c';
+const BG_COLOR = '#fffbe8';
+VantComponent({
+    props: {
+        text: {
+            type: String,
+            value: ''
+        },
+        mode: {
+            type: String,
+            value: ''
+        },
+        url: {
+            type: String,
+            value: ''
+        },
+        openType: {
+            type: String,
+            value: 'navigate'
+        },
+        delay: {
+            type: Number,
+            value: 1
+        },
+        speed: {
+            type: Number,
+            value: 50
+        },
+        scrollable: {
+            type: Boolean,
+            value: true
+        },
+        leftIcon: {
+            type: String,
+            value: ''
+        },
+        color: {
+            type: String,
+            value: FONT_COLOR
+        },
+        backgroundColor: {
+            type: String,
+            value: BG_COLOR
+        },
+        wrapable: Boolean
+    },
+    data: {
+        show: true
+    },
+    watch: {
+        text() {
+            this.setData({}, this.init);
+        }
+    },
+    created() {
+        this.resetAnimation = wx.createAnimation({
+            duration: 0,
+            timingFunction: 'linear'
+        });
+    },
+    destroyed() {
+        this.timer && clearTimeout(this.timer);
+    },
+    methods: {
+        init() {
+            Promise.all([
+                this.getRect('.van-notice-bar__content'),
+                this.getRect('.van-notice-bar__wrap')
+            ]).then((rects) => {
+                const [contentRect, wrapRect] = rects;
+                if (contentRect == null ||
+                    wrapRect == null ||
+                    !contentRect.width ||
+                    !wrapRect.width) {
+                    return;
+                }
+                const { speed, scrollable, delay } = this.data;
+                if (scrollable && wrapRect.width < contentRect.width) {
+                    const duration = (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();
+                }
+            });
+        },
+        scroll() {
+            this.timer && clearTimeout(this.timer);
+            this.timer = null;
+            this.setData({
+                animationData: this.resetAnimation
+                    .translateX(this.wrapWidth)
+                    .step()
+                    .export()
+            });
+            setTimeout(() => {
+                this.setData({
+                    animationData: this.animation
+                        .translateX(-this.contentWidth)
+                        .step()
+                        .export()
+                });
+            }, 20);
+            this.timer = setTimeout(() => {
+                this.scroll();
+            }, this.duration);
+        },
+        onClickIcon() {
+            this.timer && clearTimeout(this.timer);
+            this.timer = null;
+            this.setData({ show: false });
+        },
+        onClick(event) {
+            this.$emit('click', event);
+        }
+    }
+});

utils/dist/notice-bar/index.json

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+{
+  "component": true,
+  "usingComponents": {
+    "van-icon": "../icon/index"
+  }
+}

utils/dist/notice-bar/index.wxml

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+<wxs src="../wxs/utils.wxs" module="utils" />
+
+<view
+  wx:if="{{ show }}"
+  class="custom-class {{ utils.bem('notice-bar', { withicon: mode, wrapable }) }}"
+  style="color: {{ color }}; background-color: {{ backgroundColor }};"
+  bind:tap="onClick"
+>
+  <van-icon
+    wx:if="{{ leftIcon }}"
+    size="16px"
+    name="{{ leftIcon }}"
+    class="van-notice-bar__left-icon"
+  />
+  <slot wx:else name="left-icon" />
+
+  <view class="van-notice-bar__wrap">
+    <view class="van-notice-bar__content {{ !scrollable && !wrapable ? 'van-ellipsis' : '' }}" animation="{{ animationData }}">
+      {{ text }}
+    </view>
+  </view>
+
+  <van-icon
+    wx:if="{{ mode === 'closeable' }}"
+    class="van-notice-bar__right-icon"
+    name="cross"
+    catch:tap="onClickIcon"
+  />
+  <navigator
+    wx:elif="{{ mode === 'link' }}"
+    url="{{ url }}"
+    open-type="{{ openType }}"
+  >
+    <van-icon class="van-notice-bar__right-icon" name="arrow" />
+  </navigator>
+  <slot wx:else name="right-icon" />
+</view>

utils/dist/notice-bar/index.wxss

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+@import '../common/index.wxss';.van-notice-bar{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;height:40px;height:var(--notice-bar-height,40px);padding:0 16px;padding:var(--notice-bar-padding,0 16px);font-size:14px;font-size:var(--notice-bar-font-size,14px);color:#ed6a0c;color:var(--notice-bar-text-color,#ed6a0c);line-height:24px;line-height:var(--notice-bar-line-height,24px);background-color:#fffbe8;background-color:var(--notice-bar-background-color,#fffbe8)}.van-notice-bar--withicon{position:relative;padding-right:40px}.van-notice-bar--wrapable{height:auto;padding:8px 16px;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{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;margin-right:4px;vertical-align:middle}.van-notice-bar__left-icon,.van-notice-bar__right-icon{font-size:16px;font-size:var(--notice-bar-icon-size,16px);min-width:22px;min-width:var(--notice-bar-icon-min-width,22px)}.van-notice-bar__right-icon{position:absolute;top:10px;right:15px}.van-notice-bar__wrap{position:relative;-webkit-flex:1;flex:1;overflow:hidden;height:24px;height:var(--notice-bar-line-height,24px)}.van-notice-bar__content{position:absolute;white-space:nowrap}.van-notice-bar__content.van-ellipsis{max-width:100%}