| <template> | 
|     <view class="u-subsection" :style="[subsectionStyle]"> | 
|         <view class="u-item u-line-1" :style="[itemStyle(index)]" @tap="click(index)" :class="[noBorderRight(index), 'u-item-' + index]" | 
|          v-for="(item, index) in listInfo" :key="index"> | 
|             <view :style="[textStyle(index)]" class="u-item-text u-line-1">{{ item.name }}</view> | 
|         </view> | 
|         <view class="u-item-bg" :style="[itemBarStyle]"></view> | 
|     </view> | 
| </template> | 
|   | 
| <script> | 
|     /** | 
|      * subsection 分段器 | 
|      * @description 该分段器一般用于用户从几个选项中选择某一个的场景 | 
|      * @tutorial https://www.uviewui.com/components/subsection.html | 
|      * @property {Array} list 选项的数组,形式见上方"基本使用" | 
|      * @property {String Number} current 初始化时默认选中的选项索引值(默认0) | 
|      * @property {String} active-color 激活时的颜色,mode为subsection时固定为白色(默认#303133) | 
|      * @property {String} inactive-color 未激活时字体的颜色,mode为subsection时无效(默认#606266) | 
|      * @property {String} mode 模式选择,见官网"模式选择"说明(默认button) | 
|      * @property {String Number} font-size 字体大小,单位rpx(默认28) | 
|      * @property {String Number} height 组件高度,单位rpx(默认70) | 
|      * @property {Boolean} animation 是否开启动画效果,见上方说明(默认true) | 
|      * @property {Boolean} bold 激活选项的字体是否加粗(默认true) | 
|      * @property {String} bg-color 组件背景颜色,mode为button时有效(默认#eeeeef) | 
|      * @property {String} button-color 按钮背景颜色,mode为button时有效(默认#ffffff) | 
|      * @event {Function} change 分段器选项发生改变时触发 | 
|      * @example <u-subsection active-color="#ff9900"></u-subsection> | 
|      */ | 
|     export default { | 
|         name: "u-subsection", | 
|         props: { | 
|             // tab的数据 | 
|             list: { | 
|                 type: Array, | 
|                 default () { | 
|                     return []; | 
|                 } | 
|             }, | 
|             // 当前活动的tab的index | 
|             current: { | 
|                 type: [Number, String], | 
|                 default: 0 | 
|             }, | 
|             // 激活的颜色 | 
|             activeColor: { | 
|                 type: String, | 
|                 default: '#303133' | 
|             }, | 
|             // 未激活的颜色 | 
|             inactiveColor: { | 
|                 type: String, | 
|                 default: '#606266' | 
|             }, | 
|             // 模式选择,mode=button为按钮形式,mode=subsection时为分段模式 | 
|             mode: { | 
|                 type: String, | 
|                 default: 'button' | 
|             }, | 
|             // 字体大小,单位rpx | 
|             fontSize: { | 
|                 type: [Number, String], | 
|                 default: 28 | 
|             }, | 
|             // 是否开启动画效果 | 
|             animation: { | 
|                 type: Boolean, | 
|                 default: true | 
|             }, | 
|             // 组件的高度,单位rpx | 
|             height: { | 
|                 type: [Number, String], | 
|                 default: 70 | 
|             }, | 
|             // 激活tab的字体是否加粗 | 
|             bold: { | 
|                 type: Boolean, | 
|                 default: true | 
|             }, | 
|             // mode=button时,组件背景颜色 | 
|             bgColor: { | 
|                 type: String, | 
|                 default: '#eeeeef' | 
|             }, | 
|             // mode = button时,滑块背景颜色 | 
|             buttonColor: { | 
|                 type: String, | 
|                 default: '#ffffff' | 
|             }, | 
|             // 在切换分段器的时候,是否让设备震一下 | 
|             vibrateShort: { | 
|                 type: Boolean, | 
|                 default: false | 
|             } | 
|         }, | 
|         data() { | 
|             return { | 
|                 listInfo: [], | 
|                 itemBgStyle: { | 
|                     width: 0, | 
|                     left: 0, | 
|                     backgroundColor: '#ffffff', | 
|                     height: '100%', | 
|                     transition: '' | 
|                 }, | 
|                 currentIndex: this.current, | 
|                 buttonPadding: 3, // mode = button 时,组件的内边距 | 
|                 borderRadius: 5, // 圆角值 | 
|                 firstTimeVibrateShort: true // 组件初始化时,会触发current变化,此时不应震动 | 
|             }; | 
|         }, | 
|         watch: { | 
|             current: { | 
|                 immediate: true, | 
|                 handler(nVal) { | 
|                     this.currentIndex = nVal; | 
|                     this.changeSectionStatus(nVal); | 
|                 } | 
|             } | 
|         }, | 
|         created() { | 
|             // 将list的数据,传入listInfo数组,因为不能修改props传递的list值 | 
|             // 可以接受直接数组形式,或者数组元素为对象的形式,如:['简介', '评论'],或者[{name: '简介'}, {name: '评论'}] | 
|             this.listInfo = this.list.map((val, index) => { | 
|                 if (typeof val != 'object') { | 
|                     let obj = { | 
|                         width: 0, | 
|                         name: val | 
|                     }; | 
|                     return obj; | 
|                 } else { | 
|                     val.width = 0; | 
|                     return val; | 
|                 } | 
|             }); | 
|         }, | 
|         computed: { | 
|             // 设置mode=subsection时,滑块特有的样式 | 
|             noBorderRight() { | 
|                 return index => { | 
|                     if (this.mode != 'subsection') return; | 
|                     let classs = ''; | 
|                     // 不显示右边的边框 | 
|                     if (index < this.list.length - 1) classs += ' u-none-border-right'; | 
|                     // 显示整个组件的左右边圆角 | 
|                     if (index == 0) classs += ' u-item-first'; | 
|                     if (index == this.list.length - 1) classs += ' u-item-last'; | 
|                     return classs; | 
|                 }; | 
|             }, | 
|             // 文字的样式 | 
|             textStyle() { | 
|                 return index => { | 
|                     let style = {}; | 
|                     // 设置字体颜色 | 
|                     if (this.mode == 'subsection') { | 
|                         if (index == this.currentIndex) { | 
|                             style.color = '#ffffff'; | 
|                         } else { | 
|                             style.color = this.activeColor; | 
|                         } | 
|                     } else { | 
|                         if (index == this.currentIndex) { | 
|                             style.color = this.activeColor; | 
|                         } else { | 
|                             style.color = this.inactiveColor; | 
|                         } | 
|                     } | 
|                     // 字体加粗 | 
|                     if (index == this.currentIndex && this.bold) style.fontWeight = 'bold'; | 
|                     // 文字大小 | 
|                     style.fontSize = this.fontSize + 'rpx'; | 
|                     return style; | 
|                 }; | 
|             }, | 
|             // 每个分段器item的样式 | 
|             itemStyle() { | 
|                 return index => { | 
|                     let style = {}; | 
|                     if (this.mode == 'subsection') { | 
|                         // 设置border的样式 | 
|                         style.borderColor = this.activeColor; | 
|                         style.borderWidth = '1px'; | 
|                         style.borderStyle = 'solid'; | 
|                     } | 
|                     return style; | 
|                 }; | 
|             }, | 
|             // mode=button时,外层view的样式 | 
|             subsectionStyle() { | 
|                 let style = {}; | 
|                 style.height = uni.upx2px(this.height) + 'px'; | 
|                 if (this.mode == 'button') { | 
|                     style.backgroundColor = this.bgColor; | 
|                     style.padding = `${this.buttonPadding}px`; | 
|                     style.borderRadius = `${this.borderRadius}px`; | 
|                 } | 
|                 return style; | 
|             }, | 
|             // 滑块的样式 | 
|             itemBarStyle() { | 
|                 let style = {}; | 
|                 style.backgroundColor = this.activeColor; | 
|                 style.zIndex = 1; | 
|                 if (this.mode == 'button') { | 
|                     style.backgroundColor = this.buttonColor; | 
|                     style.borderRadius = `${this.borderRadius}px`; | 
|                     style.bottom = `${this.buttonPadding}px`; | 
|                     style.height = uni.upx2px(this.height) - this.buttonPadding * 2 + 'px'; | 
|                     style.zIndex = 0; | 
|                 } | 
|                 return Object.assign(this.itemBgStyle, style); | 
|             } | 
|         }, | 
|         mounted() { | 
|             setTimeout(() => { | 
|                 this.getTabsInfo(); | 
|             }, 10); | 
|         }, | 
|         methods: { | 
|             // 改变滑块的样式 | 
|             changeSectionStatus(nVal) { | 
|                 if (this.mode == 'subsection') { | 
|                     // 根据滑块在最左边和最右边时,显示左边和右边的圆角 | 
|                     if (nVal == this.list.length - 1) { | 
|                         this.itemBgStyle.borderRadius = `0 ${this.buttonPadding}px ${this.buttonPadding}px 0`; | 
|                     } | 
|                     if (nVal == 0) { | 
|                         this.itemBgStyle.borderRadius = `${this.buttonPadding}px 0 0 ${this.buttonPadding}px`; | 
|                     } | 
|                     if (nVal > 0 && nVal < this.list.length - 1) { | 
|                         this.itemBgStyle.borderRadius = '0'; | 
|                     } | 
|                 } | 
|                 // 更新滑块的位置 | 
|                 setTimeout(() => { | 
|                     this.itemBgLeft(); | 
|                 }, 10); | 
|                 if (this.vibrateShort && !this.firstTimeVibrateShort) { | 
|                     // 使手机产生短促震动,微信小程序有效,APP(HX 2.6.8)和H5无效 | 
|                     // #ifndef H5 | 
|                     uni.vibrateShort(); | 
|                     // #endif | 
|                 } | 
|                 // 第一次过后,设置firstTimeVibrateShort为false,让其下一次可以震动(如果允许震动的话) | 
|                 this.firstTimeVibrateShort = false; | 
|             }, | 
|             click(index) { | 
|                 // 不允许点击当前激活选项 | 
|                 if (index == this.currentIndex) return; | 
|                 this.currentIndex = index; | 
|                 this.changeSectionStatus(index); | 
|                 this.$emit('change', Number(index)); | 
|             }, | 
|             // 获取各个tab的节点信息 | 
|             getTabsInfo() { | 
|                 let view = uni.createSelectorQuery().in(this); | 
|                 for (let i = 0; i < this.list.length; i++) { | 
|                     view.select('.u-item-' + i).boundingClientRect(); | 
|                 } | 
|                 view.exec(res => { | 
|                     if (!res.length) { | 
|                         setTimeout(() => { | 
|                             this.getTabsInfo(); | 
|                             return; | 
|                         }, 10); | 
|                     } | 
|                     // 将分段器每个item的宽度,放入listInfo数组 | 
|                     res.map((val, index) => { | 
|                         this.listInfo[index].width = val.width; | 
|                     }); | 
|                     // 初始化滑块的宽度 | 
|                     if (this.mode == 'subsection') { | 
|                         this.itemBgStyle.width = this.listInfo[0].width + 'px'; | 
|                     } else if (this.mode == 'button') { | 
|                         this.itemBgStyle.width = this.listInfo[0].width + 'px'; | 
|                     } | 
|                     // 初始化滑块的位置 | 
|                     this.itemBgLeft(); | 
|                 }); | 
|             }, | 
|             itemBgLeft() { | 
|                 // 根据是否开启动画效果, | 
|                 if (this.animation) { | 
|                     this.itemBgStyle.transition = 'all 0.35s'; | 
|                 } else { | 
|                     this.itemBgStyle.transition = 'all 0s'; | 
|                 } | 
|                 let left = 0; | 
|                 // 计算当前活跃item到组件左边的距离 | 
|                 this.listInfo.map((val, index) => { | 
|                     if (index < this.currentIndex) left += val.width; | 
|                 }); | 
|                 // 根据mode不同模式,计算滑块需要移动的距离 | 
|                 if (this.mode == 'subsection') { | 
|                     this.itemBgStyle.left = left + 'px'; | 
|                 } else if (this.mode == 'button') { | 
|                     this.itemBgStyle.left = left + this.buttonPadding + 'px'; | 
|                 } | 
|             } | 
|         } | 
|     }; | 
| </script> | 
|   | 
| <style lang="scss" scoped> | 
|     @import "../../libs/css/style.components.scss"; | 
|      | 
|     .u-subsection { | 
|         @include vue-flex; | 
|         align-items: center; | 
|         overflow: hidden; | 
|         position: relative; | 
|     } | 
|   | 
|     .u-item { | 
|         flex: 1; | 
|         text-align: center; | 
|         font-size: 26rpx; | 
|         height: 100%; | 
|         @include vue-flex; | 
|         align-items: center; | 
|         justify-content: center; | 
|         color: $u-main-color; | 
|         padding: 0 6rpx; | 
|     } | 
|   | 
|     .u-item-bg { | 
|         background-color: $u-type-primary; | 
|         position: absolute; | 
|         z-index: -1; | 
|     } | 
|   | 
|     .u-none-border-right { | 
|         border-right: none !important; | 
|     } | 
|   | 
|     .u-item-first { | 
|         border-top-left-radius: 8rpx; | 
|         border-bottom-left-radius: 8rpx; | 
|     } | 
|   | 
|     .u-item-last { | 
|         border-top-right-radius: 8rpx; | 
|         border-bottom-right-radius: 8rpx; | 
|     } | 
|   | 
|     .u-item-text { | 
|         transition: all 0.35s; | 
|         color: $u-main-color; | 
|         @include vue-flex; | 
|         align-items: center; | 
|         position: relative; | 
|         z-index: 3; | 
|     } | 
| </style> |