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+<template>
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+ <view>
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+ <view
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+ ref="uni-rate"
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+ class="uni-rate"
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+ >
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+ <view
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+ class="uni-rate__icon"
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+ :class="{'uni-cursor-not-allowed': disabled}"
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+ :style="{ 'margin-right': marginNumber + 'px' }"
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+ v-for="(star, index) in stars"
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+ :key="index"
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+ @touchstart.stop="touchstart"
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+ @touchmove.stop="touchmove"
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+ @mousedown.stop="mousedown"
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+ @mousemove.stop="mousemove"
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+ @mouseleave="mouseleave"
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+ >
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+ <uni-icons
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+ :color="color"
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+ :size="size"
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+ :type="isFill ? 'star-filled' : 'star'"
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+ />
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+ <!-- #ifdef APP-NVUE -->
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+ <view
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+ :style="{ width: star.activeWitch.replace('%','')*size/100+'px'}"
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+ class="uni-rate__icon-on"
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+ >
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+ <uni-icons
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+ style="text-align: left;"
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+ :color="disabled?'#ccc':activeColor"
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+ :size="size"
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+ type="star-filled"
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+ />
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+ </view>
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+ <!-- #endif -->
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+ <!-- #ifndef APP-NVUE -->
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+ <view
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+ :style="{ width: star.activeWitch}"
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+ class="uni-rate__icon-on"
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+ >
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+ <uni-icons
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+ :color="disabled?disabledColor:activeColor"
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+ :size="size"
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+ type="star-filled"
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+ />
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+ </view>
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+ <!-- #endif -->
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+ </view>
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+ </view>
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+ </view>
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+</template>
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+
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+<script>
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+ // #ifdef APP-NVUE
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+ const dom = uni.requireNativePlugin('dom');
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+ // #endif
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+ /**
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+ * Rate 评分
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+ * @description 评分组件
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+ * @tutorial https://ext.dcloud.net.cn/plugin?id=33
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+ * @property {Boolean} isFill = [true|false] 星星的类型,是否为实心类型, 默认为实心
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+ * @property {String} color 未选中状态的星星颜色,默认为 "#ececec"
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+ * @property {String} activeColor 选中状态的星星颜色,默认为 "#ffca3e"
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+ * @property {String} disabledColor 禁用状态的星星颜色,默认为 "#c0c0c0"
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+ * @property {Number} size 星星的大小
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+ * @property {Number} value/v-model 当前评分
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+ * @property {Number} max 最大评分评分数量,目前一分一颗星
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+ * @property {Number} margin 星星的间距,单位 px
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+ * @property {Boolean} disabled = [true|false] 是否为禁用状态,默认为 false
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+ * @property {Boolean} readonly = [true|false] 是否为只读状态,默认为 false
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+ * @property {Boolean} allowHalf = [true|false] 是否实现半星,默认为 false
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+ * @property {Boolean} touchable = [true|false] 是否支持滑动手势,默认为 true
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+ * @event {Function} change uniRate 的 value 改变时触发事件,e={value:Number}
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+ */
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+
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+ export default {
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+ name: "UniRate",
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+ props: {
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+ isFill: {
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+ // 星星的类型,是否镂空
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+ type: [Boolean, String],
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+ default: true
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+ },
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+ color: {
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+ // 星星未选中的颜色
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+ type: String,
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+ default: "#ececec"
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+ },
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+ activeColor: {
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+ // 星星选中状态颜色
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+ type: String,
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+ default: "#ffca3e"
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+ },
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+ disabledColor: {
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+ // 星星禁用状态颜色
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+ type: String,
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+ default: "#c0c0c0"
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+ },
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+ size: {
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+ // 星星的大小
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+ type: [Number, String],
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+ default: 24
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+ },
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+ value: {
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+ // 当前评分
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+ type: [Number, String],
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+ default: 0
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+ },
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+ modelValue: {
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+ // 当前评分
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+ type: [Number, String],
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+ default: 0
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+ },
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+ max: {
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+ // 最大评分
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+ type: [Number, String],
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+ default: 5
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+ },
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+ margin: {
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+ // 星星的间距
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+ type: [Number, String],
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+ default: 0
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+ },
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+ disabled: {
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+ // 是否可点击
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+ type: [Boolean, String],
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+ default: false
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+ },
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+ readonly: {
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+ // 是否只读
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+ type: [Boolean, String],
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+ default: false
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+ },
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+ allowHalf: {
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+ // 是否显示半星
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+ type: [Boolean, String],
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+ default: false
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+ },
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+ touchable: {
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+ // 是否支持滑动手势
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+ type: [Boolean, String],
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+ default: true
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+ }
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+ },
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+ data() {
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+ return {
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+ valueSync: "",
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+ userMouseFristMove: true,
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+ userRated: false,
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+ userLastRate: 1
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+ };
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+ },
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+ watch: {
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+ value(newVal) {
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+ this.valueSync = Number(newVal);
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+ },
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+ modelValue(newVal) {
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+ this.valueSync = Number(newVal);
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+ },
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+ },
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+ computed: {
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+ stars() {
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+ const value = this.valueSync ? this.valueSync : 0;
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+ const starList = [];
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+ const floorValue = Math.floor(value);
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+ const ceilValue = Math.ceil(value);
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+ for (let i = 0; i < this.max; i++) {
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+ if (floorValue > i) {
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+ starList.push({
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+ activeWitch: "100%"
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+ });
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+ } else if (ceilValue - 1 === i) {
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+ starList.push({
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+ activeWitch: (value - floorValue) * 100 + "%"
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+ });
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+ } else {
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+ starList.push({
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+ activeWitch: "0"
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+ });
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+ }
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+ }
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+ return starList;
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+ },
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+
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+ marginNumber() {
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+ return Number(this.margin)
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+ }
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+ },
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+ created() {
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+ this.valueSync = Number(this.value||this.modelValue);
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+ this._rateBoxLeft = 0
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+ this._oldValue = null
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+ },
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+ mounted() {
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+ setTimeout(() => {
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+ this._getSize()
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+ }, 100)
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+ // #ifdef H5
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+ this.PC = this.IsPC()
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+ // #endif
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+ },
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+ methods: {
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+ touchstart(e) {
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+ // #ifdef H5
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+ if( this.IsPC() ) return
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+ // #endif
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+ if (this.readonly || this.disabled) return
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+ const {
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+ clientX,
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+ screenX
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+ } = e.changedTouches[0]
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+ // TODO 做一下兼容,只有 Nvue 下才有 screenX,其他平台式 clientX
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+ this._getRateCount(clientX || screenX)
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+ },
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+ touchmove(e) {
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+ // #ifdef H5
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+ if( this.IsPC() ) return
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+ // #endif
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+ if (this.readonly || this.disabled || !this.touchable) return
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+ const {
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+ clientX,
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+ screenX
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+ } = e.changedTouches[0]
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+ this._getRateCount(clientX || screenX)
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+ },
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+
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+ /**
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+ * 兼容 PC @tian
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+ */
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+
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+ mousedown(e) {
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+ // #ifdef H5
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+ if( !this.IsPC() ) return
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+ if (this.readonly || this.disabled) return
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+ const {
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+ clientX,
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+ } = e
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+ this.userLastRate = this.valueSync
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+ this._getRateCount(clientX)
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+ this.userRated = true
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+ // #endif
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+ },
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+ mousemove(e) {
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+ // #ifdef H5
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+ if( !this.IsPC() ) return
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+ if( this.userRated ) return
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+ if( this.userMouseFristMove ) {
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+ console.log('---mousemove----', this.valueSync);
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+ this.userLastRate = this.valueSync
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+ this.userMouseFristMove = false
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+ }
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+ if (this.readonly || this.disabled || !this.touchable) return
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+ const {
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+ clientX,
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+ } = e
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+ this._getRateCount(clientX)
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+ // #endif
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+ },
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+ mouseleave(e) {
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+ // #ifdef H5
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+ if( !this.IsPC() ) return
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+ if (this.readonly || this.disabled || !this.touchable) return
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+ if( this.userRated ) {
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+ this.userRated = false
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+ return
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+ }
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+ this.valueSync = this.userLastRate
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+ // #endif
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+ },
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+ // #ifdef H5
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+ IsPC() {
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+ var userAgentInfo = navigator.userAgent;
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+ var Agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];
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+ var flag = true;
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+ for (let v = 0; v < Agents.length - 1; v++) {
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+ if (userAgentInfo.indexOf(Agents[v]) > 0) {
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+ flag = false;
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+ break;
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+ }
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+ }
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+ return flag;
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+ },
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+ // #endif
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+
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+ /**
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+ * 获取星星个数
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+ */
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+ _getRateCount(clientX) {
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+ this._getSize()
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+ const size = Number(this.size)
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+ if(size === NaN){
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+ return new Error('size 属性只能设置为数字')
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+ }
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+ const rateMoveRange = clientX - this._rateBoxLeft
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+ let index = parseInt(rateMoveRange / (size + this.marginNumber))
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+ index = index < 0 ? 0 : index;
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+ index = index > this.max ? this.max : index;
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+ const range = parseInt(rateMoveRange - (size + this.marginNumber) * index);
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+ let value = 0;
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+ if (this._oldValue === index && !this.PC) return;
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+ this._oldValue = index;
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+ if (this.allowHalf) {
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+ if (range > (size / 2)) {
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+ value = index + 1
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+ } else {
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+ value = index + 0.5
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+ }
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+ } else {
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+ value = index + 1
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+ }
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+
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+ value = Math.max(0.5, Math.min(value, this.max))
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+ this.valueSync = value
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+ this._onChange()
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+ },
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+
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+ /**
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+ * 触发动态修改
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+ */
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+ _onChange() {
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+
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+ this.$emit("input", this.valueSync);
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+ this.$emit("update:modelValue", this.valueSync);
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+ this.$emit("change", {
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+ value: this.valueSync
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+ });
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+ },
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+ /**
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+ * 获取星星距离屏幕左侧距离
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+ */
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+ _getSize() {
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+ // #ifndef APP-NVUE
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+ uni.createSelectorQuery()
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+ .in(this)
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+ .select('.uni-rate')
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+ .boundingClientRect()
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+ .exec(ret => {
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+ if (ret) {
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+ this._rateBoxLeft = ret[0].left
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+ }
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+ })
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+ // #endif
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+ // #ifdef APP-NVUE
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+ dom.getComponentRect(this.$refs['uni-rate'], (ret) => {
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+ const size = ret.size
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+ if (size) {
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+ this._rateBoxLeft = size.left
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+ }
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+ })
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+ // #endif
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+ }
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+ }
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+ };
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+</script>
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+
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+<style
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+ lang="scss"
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+ scoped
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+>
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+ .uni-rate {
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+ /* #ifndef APP-NVUE */
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+ display: flex;
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+ /* #endif */
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+ line-height: 1;
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+ font-size: 0;
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+ flex-direction: row;
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+ /* #ifdef H5 */
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+ cursor: pointer;
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+ /* #endif */
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+ }
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+
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+ .uni-rate__icon {
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+ position: relative;
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+ line-height: 1;
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+ font-size: 0;
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+ }
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+
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+ .uni-rate__icon-on {
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+ overflow: hidden;
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+ position: absolute;
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+ top: 0;
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+ left: 0;
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+ line-height: 1;
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+ text-align: left;
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+ }
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+
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+ .uni-cursor-not-allowed {
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+ /* #ifdef H5 */
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+ cursor: not-allowed !important;
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+ /* #endif */
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+ }
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+</style>
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