| <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>
 |