| <template> | 
|     <view | 
|         class="u-rate" | 
|         :id="elId" | 
|         ref="u-rate" | 
|         :style="[$u.addStyle(customStyle)]" | 
|     > | 
|         <view | 
|             class="u-rate__content" | 
|             @touchmove.stop="touchMove" | 
|             @touchend.stop="touchEnd" | 
|         > | 
|             <view | 
|                 class="u-rate__content__item" | 
|                 v-for="(item, index) in Number(count)" | 
|                 :key="index" | 
|                 :class="[elClass]" | 
|             > | 
|                 <view | 
|                     class="u-rate__content__item__icon-wrap" | 
|                     ref="u-rate__content__item__icon-wrap" | 
|                     @tap.stop="clickHandler($event, index + 1)" | 
|                 > | 
|                     <u-icon | 
|                         :name=" | 
|                             Math.floor(activeIndex) > index | 
|                                 ? activeIcon | 
|                                 : inactiveIcon | 
|                         " | 
|                         :color=" | 
|                             disabled | 
|                                 ? '#c8c9cc' | 
|                                 : Math.floor(activeIndex) > index | 
|                                 ? activeColor | 
|                                 : inactiveColor | 
|                         " | 
|                         :custom-style="{ | 
|                             'padding-left': $u.addUnit(gutter / 2), | 
|                             'padding-right': $u.addUnit(gutter / 2) | 
|                         }" | 
|                         :size="size" | 
|                     ></u-icon> | 
|                 </view> | 
|                 <view | 
|                     v-if="allowHalf" | 
|                     @tap.stop="clickHandler($event, index + 1)" | 
|                     class="u-rate__content__item__icon-wrap u-rate__content__item__icon-wrap--half" | 
|                     :style="[{ | 
|                         width: $u.addUnit(rateWidth / 2), | 
|                     }]" | 
|                     ref="u-rate__content__item__icon-wrap" | 
|                 > | 
|                     <u-icon | 
|                         :name=" | 
|                             Math.ceil(activeIndex) > index | 
|                                 ? activeIcon | 
|                                 : inactiveIcon | 
|                         " | 
|                         :color=" | 
|                             disabled | 
|                                 ? '#c8c9cc' | 
|                                 : Math.ceil(activeIndex) > index | 
|                                 ? activeColor | 
|                                 : inactiveColor | 
|                         " | 
|                         :custom-style="{ | 
|                             'padding-left': $u.addUnit(gutter / 2), | 
|                             'padding-right': $u.addUnit(gutter / 2) | 
|                         }" | 
|                         :size="size" | 
|                     ></u-icon> | 
|                 </view> | 
|             </view> | 
|         </view> | 
|     </view> | 
| </template> | 
|   | 
| <script> | 
|     import props from './props.js'; | 
|   | 
|     // #ifdef APP-NVUE | 
|     const dom = weex.requireModule("dom"); | 
|     // #endif | 
|     /** | 
|      * rate 评分 | 
|      * @description 该组件一般用于满意度调查,星型评分的场景 | 
|      * @tutorial https://www.uviewui.com/components/rate.html | 
|      * @property {String | Number}    value            用于v-model双向绑定选中的星星数量 (默认 1 ) | 
|      * @property {String | Number}    count            最多可选的星星数量 (默认 5 ) | 
|      * @property {Boolean}            disabled        是否禁止用户操作 (默认 false ) | 
|      * @property {Boolean}            readonly        是否只读 (默认 false ) | 
|      * @property {String | Number}    size            星星的大小,单位px (默认 18 ) | 
|      * @property {String}            inactiveColor    未选中星星的颜色 (默认 '#b2b2b2' ) | 
|      * @property {String}            activeColor        选中的星星颜色 (默认 '#FA3534' ) | 
|      * @property {String | Number}    gutter            星星之间的距离 (默认 4 ) | 
|      * @property {String | Number}    minCount        最少选中星星的个数 (默认 1 ) | 
|      * @property {Boolean}            allowHalf        是否允许半星选择 (默认 false ) | 
|      * @property {String}            activeIcon        选中时的图标名,只能为uView的内置图标 (默认 'star-fill' ) | 
|      * @property {String}            inactiveIcon    未选中时的图标名,只能为uView的内置图标 (默认 'star' ) | 
|      * @property {Boolean}            touchable        是否可以通过滑动手势选择评分 (默认 'true' ) | 
|      * @property {Object}            customStyle        组件的样式,对象形式 | 
|      * @event {Function} change 选中的星星发生变化时触发 | 
|      * @example <u-rate :count="count" :value="2"></u-rate> | 
|      */ | 
|     export default { | 
|         name: "u-rate", | 
|         mixins: [uni.$u.mpMixin, uni.$u.mixin,props], | 
|         data() { | 
|             return { | 
|                 // 生成一个唯一id,否则一个页面多个评分组件,会造成冲突 | 
|                 elId: uni.$u.guid(), | 
|                 elClass: uni.$u.guid(), | 
|                 rateBoxLeft: 0, // 评分盒子左边到屏幕左边的距离,用于滑动选择时计算距离 | 
|                 activeIndex: this.value, | 
|                 rateWidth: 0, // 每个星星的宽度 | 
|                 // 标识是否正在滑动,由于iOS事件上touch比click先触发,导致快速滑动结束后,接着触发click,导致事件混乱而出错 | 
|                 moving: false, | 
|             }; | 
|         }, | 
|         watch: { | 
|             value(val) { | 
|                 this.activeIndex = val; | 
|             }, | 
|             activeIndex: 'emitEvent' | 
|         }, | 
|         methods: { | 
|             init() { | 
|                 uni.$u.sleep().then(() => { | 
|                     this.getRateItemRect(); | 
|                     this.getRateIconWrapRect(); | 
|                 }) | 
|             }, | 
|             // 获取评分组件盒子的布局信息 | 
|             async getRateItemRect() { | 
|                 await uni.$u.sleep(); | 
|                 // uView封装的获取节点的方法,详见文档 | 
|                 // #ifndef APP-NVUE | 
|                 this.$uGetRect("#" + this.elId).then((res) => { | 
|                     this.rateBoxLeft = res.left; | 
|                 }); | 
|                 // #endif | 
|                 // #ifdef APP-NVUE | 
|                 dom.getComponentRect(this.$refs["u-rate"], (res) => { | 
|                     this.rateBoxLeft = res.size.left; | 
|                 }); | 
|                 // #endif | 
|             }, | 
|             // 获取单个星星的尺寸 | 
|             getRateIconWrapRect() { | 
|                 // uView封装的获取节点的方法,详见文档 | 
|                 // #ifndef APP-NVUE | 
|                 this.$uGetRect("." + this.elClass).then((res) => { | 
|                     this.rateWidth = res.width; | 
|                 }); | 
|                 // #endif | 
|                 // #ifdef APP-NVUE | 
|                 dom.getComponentRect( | 
|                     this.$refs["u-rate__content__item__icon-wrap"][0], | 
|                     (res) => { | 
|                         this.rateWidth = res.size.width; | 
|                     } | 
|                 ); | 
|                 // #endif | 
|             }, | 
|             // 手指滑动 | 
|             touchMove(e) { | 
|                 // 如果禁止通过手动滑动选择,返回 | 
|                 if (!this.touchable) { | 
|                     return; | 
|                 } | 
|                 this.preventEvent(e); | 
|                 const x = e.changedTouches[0].pageX; | 
|                 this.getActiveIndex(x); | 
|             }, | 
|             // 停止滑动 | 
|             touchEnd(e) { | 
|                 // 如果禁止通过手动滑动选择,返回 | 
|                 if (!this.touchable) { | 
|                     return; | 
|                 } | 
|                 this.preventEvent(e); | 
|                 const x = e.changedTouches[0].pageX; | 
|                 this.getActiveIndex(x); | 
|             }, | 
|             // 通过点击,直接选中 | 
|             clickHandler(e, index) { | 
|                 // ios上,moving状态取消事件触发 | 
|                 if (uni.$u.os() === "ios" && this.moving) { | 
|                     return; | 
|                 } | 
|                 this.preventEvent(e); | 
|                 let x = 0; | 
|                 // 点击时,在nvue上,无法获得点击的坐标,所以无法实现点击半星选择 | 
|                 // #ifndef APP-NVUE | 
|                 x = e.changedTouches[0].pageX; | 
|                 // #endif | 
|                 // #ifdef APP-NVUE | 
|                 // nvue下,无法通过点击获得坐标信息,这里通过元素的位置尺寸值模拟坐标 | 
|                 x = index * this.rateWidth + this.rateBoxLeft; | 
|                 // #endif | 
|                 this.getActiveIndex(x,true); | 
|             }, | 
|             // 发出事件 | 
|             emitEvent() { | 
|                 // 发出change事件 | 
|                 this.$emit("change", this.activeIndex); | 
|                 // 同时修改双向绑定的value的值 | 
|                 this.$emit("input", this.activeIndex); | 
|             }, | 
|             // 获取当前激活的评分图标 | 
|             getActiveIndex(x,isClick = false) { | 
|                 if (this.disabled || this.readonly) { | 
|                     return; | 
|                 } | 
|                 // 判断当前操作的点的x坐标值,是否在允许的边界范围内 | 
|                 const allRateWidth = this.rateWidth * this.count + this.rateBoxLeft; | 
|                 // 如果小于第一个图标的左边界,设置为最小值,如果大于所有图标的宽度,则设置为最大值 | 
|                 x = uni.$u.range(this.rateBoxLeft, allRateWidth, x) - this.rateBoxLeft | 
|                 // 滑动点相对于评分盒子左边的距离 | 
|                 const distance = x; | 
|                 // 滑动的距离,相当于多少颗星星 | 
|                 let index; | 
|                 // 判断是否允许半星 | 
|                 if (this.allowHalf) { | 
|                     index = Math.floor(distance / this.rateWidth); | 
|                     // 取余,判断小数的区间范围 | 
|                     const decimal = distance % this.rateWidth; | 
|                     if (decimal <= this.rateWidth / 2 && decimal > 0) { | 
|                         index += 0.5; | 
|                     } else if (decimal > this.rateWidth / 2) { | 
|                         index++; | 
|                     } | 
|                 } else { | 
|                     index = Math.floor(distance / this.rateWidth); | 
|                     // 取余,判断小数的区间范围 | 
|                     const decimal = distance % this.rateWidth; | 
|                     // 非半星时,只有超过了图标的一半距离,才认为是选择了这颗星 | 
|                     if (isClick){ | 
|                         if (decimal > 0) index++; | 
|                     } else { | 
|                         if (decimal > this.rateWidth / 2) index++; | 
|                     } | 
|   | 
|                 } | 
|                 this.activeIndex = Math.min(index, this.count); | 
|                 // 对最少颗星星的限制 | 
|                 if (this.activeIndex < this.minCount) { | 
|                     this.activeIndex = this.minCount; | 
|                 } | 
|   | 
|                 // 设置延时为了让click事件在touchmove之前触发 | 
|                 setTimeout(() => { | 
|                     this.moving = true; | 
|                 }, 10); | 
|                 // 一定时间后,取消标识为移动中状态,是为了让click事件无效 | 
|                 setTimeout(() => { | 
|                     this.moving = false; | 
|                 }, 10); | 
|             }, | 
|         }, | 
|         mounted() { | 
|             this.init(); | 
|         }, | 
|     }; | 
| </script> | 
|   | 
| <style lang="scss" scoped> | 
| @import "../../libs/css/components.scss"; | 
| $u-rate-margin: 0 !default; | 
| $u-rate-padding: 0 !default; | 
| $u-rate-item-icon-wrap-half-top: 0 !default; | 
| $u-rate-item-icon-wrap-half-left: 0 !default; | 
|   | 
| .u-rate { | 
|     @include flex; | 
|     align-items: center; | 
|     margin: $u-rate-margin; | 
|     padding: $u-rate-padding; | 
|     /* #ifndef APP-NVUE */ | 
|     touch-action: none; | 
|     /* #endif */ | 
|   | 
|     &__content { | 
|         @include flex; | 
|   | 
|         &__item { | 
|             position: relative; | 
|   | 
|             &__icon-wrap { | 
|                 &--half { | 
|                     position: absolute; | 
|                     overflow: hidden; | 
|                     top: $u-rate-item-icon-wrap-half-top; | 
|                     left: $u-rate-item-icon-wrap-half-left; | 
|                 } | 
|             } | 
|         } | 
|     } | 
| } | 
|   | 
| .u-icon { | 
|     /* #ifndef APP-NVUE */ | 
|     box-sizing: border-box; | 
|     /* #endif */ | 
| } | 
| </style> |