| <template> | 
|     <button | 
|         id="u-wave-btn" | 
|         class="u-btn u-line-1 u-fix-ios-appearance" | 
|         :class="[ | 
|             'u-size-' + size, | 
|             plain ? 'u-btn--' + type + '--plain' : '', | 
|             loading ? 'u-loading' : '', | 
|             shape == 'circle' ? 'u-round-circle' : '', | 
|             hairLine ? showHairLineBorder : 'u-btn--bold-border', | 
|             'u-btn--' + type, | 
|             disabled ? `u-btn--${type}--disabled` : '', | 
|         ]" | 
|         :hover-start-time="Number(hoverStartTime)" | 
|         :hover-stay-time="Number(hoverStayTime)" | 
|         :disabled="disabled" | 
|         :form-type="formType" | 
|         :open-type="openType" | 
|         :app-parameter="appParameter" | 
|         :hover-stop-propagation="hoverStopPropagation" | 
|         :send-message-title="sendMessageTitle" | 
|         send-message-path="sendMessagePath" | 
|         :lang="lang" | 
|         :data-name="dataName" | 
|         :session-from="sessionFrom" | 
|         :send-message-img="sendMessageImg" | 
|         :show-message-card="showMessageCard" | 
|         @getphonenumber="getphonenumber" | 
|         @getuserinfo="getuserinfo" | 
|         @error="error" | 
|         @opensetting="opensetting" | 
|         @launchapp="launchapp" | 
|         :style="[customStyle, { | 
|             overflow: ripple ? 'hidden' : 'visible' | 
|         }]" | 
|         @tap.stop="click($event)" | 
|         :hover-class="getHoverClass" | 
|         :loading="loading" | 
|     > | 
|         <slot></slot> | 
|         <view | 
|             v-if="ripple" | 
|             class="u-wave-ripple" | 
|             :class="[waveActive ? 'u-wave-active' : '']" | 
|             :style="{ | 
|                 top: rippleTop + 'px', | 
|                 left: rippleLeft + 'px', | 
|                 width: fields.targetWidth + 'px', | 
|                 height: fields.targetWidth + 'px', | 
|                 'background-color': rippleBgColor || 'rgba(0, 0, 0, 0.15)' | 
|             }" | 
|         ></view> | 
|     </button> | 
| </template> | 
|   | 
| <script> | 
| /** | 
|  * button 按钮 | 
|  * @description Button 按钮 | 
|  * @tutorial https://www.uviewui.com/components/button.html | 
|  * @property {String} size 按钮的大小 | 
|  * @property {Boolean} ripple 是否开启点击水波纹效果 | 
|  * @property {String} ripple-bg-color 水波纹的背景色,ripple为true时有效 | 
|  * @property {String} type 按钮的样式类型 | 
|  * @property {Boolean} plain 按钮是否镂空,背景色透明 | 
|  * @property {Boolean} disabled 是否禁用 | 
|  * @property {Boolean} hair-line 是否显示按钮的细边框(默认true) | 
|  * @property {Boolean} shape 按钮外观形状,见文档说明 | 
|  * @property {Boolean} loading 按钮名称前是否带 loading 图标(App-nvue 平台,在 ios 上为雪花,Android上为圆圈) | 
|  * @property {String} form-type 用于 <form> 组件,点击分别会触发 <form> 组件的 submit/reset 事件 | 
|  * @property {String} open-type 开放能力 | 
|  * @property {String} data-name 额外传参参数,用于小程序的data-xxx属性,通过target.dataset.name获取 | 
|  * @property {String} hover-class 指定按钮按下去的样式类。当 hover-class="none" 时,没有点击态效果(App-nvue 平台暂不支持) | 
|  * @property {Number} hover-start-time 按住后多久出现点击态,单位毫秒 | 
|  * @property {Number} hover-stay-time 手指松开后点击态保留时间,单位毫秒 | 
|  * @property {Object} custom-style 对按钮的自定义样式,对象形式,见文档说明 | 
|  * @event {Function} click 按钮点击 | 
|  * @event {Function} getphonenumber open-type="getPhoneNumber"时有效 | 
|  * @event {Function} getuserinfo 用户点击该按钮时,会返回获取到的用户信息,从返回参数的detail中获取到的值同uni.getUserInfo | 
|  * @event {Function} error 当使用开放能力时,发生错误的回调 | 
|  * @event {Function} opensetting 在打开授权设置页并关闭后回调 | 
|  * @event {Function} launchapp 打开 APP 成功的回调 | 
|  * @example <u-button>月落</u-button> | 
|  */ | 
| export default { | 
|     name: 'u-button', | 
|     props: { | 
|         // 是否细边框 | 
|         hairLine: { | 
|             type: Boolean, | 
|             default: true | 
|         }, | 
|         // 按钮的预置样式,default,primary,error,warning,success | 
|         type: { | 
|             type: String, | 
|             default: 'default' | 
|         }, | 
|         // 按钮尺寸,default,medium,mini | 
|         size: { | 
|             type: String, | 
|             default: 'default' | 
|         }, | 
|         // 按钮形状,circle(两边为半圆),square(带圆角) | 
|         shape: { | 
|             type: String, | 
|             default: 'square' | 
|         }, | 
|         // 按钮是否镂空 | 
|         plain: { | 
|             type: Boolean, | 
|             default: false | 
|         }, | 
|         // 是否禁止状态 | 
|         disabled: { | 
|             type: Boolean, | 
|             default: false | 
|         }, | 
|         // 是否加载中 | 
|         loading: { | 
|             type: Boolean, | 
|             default: false | 
|         }, | 
|         // 开放能力,具体请看uniapp稳定关于button组件部分说明 | 
|         // https://uniapp.dcloud.io/component/button | 
|         openType: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 用于 <form> 组件,点击分别会触发 <form> 组件的 submit/reset 事件 | 
|         // 取值为submit(提交表单),reset(重置表单) | 
|         formType: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 打开 APP 时,向 APP 传递的参数,open-type=launchApp时有效 | 
|         // 只微信小程序、QQ小程序有效 | 
|         appParameter: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 指定是否阻止本节点的祖先节点出现点击态,微信小程序有效 | 
|         hoverStopPropagation: { | 
|             type: Boolean, | 
|             default: false | 
|         }, | 
|         // 指定返回用户信息的语言,zh_CN 简体中文,zh_TW 繁体中文,en 英文。只微信小程序有效 | 
|         lang: { | 
|             type: String, | 
|             default: 'en' | 
|         }, | 
|         // 会话来源,open-type="contact"时有效。只微信小程序有效 | 
|         sessionFrom: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 会话内消息卡片标题,open-type="contact"时有效 | 
|         // 默认当前标题,只微信小程序有效 | 
|         sendMessageTitle: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 会话内消息卡片点击跳转小程序路径,open-type="contact"时有效 | 
|         // 默认当前分享路径,只微信小程序有效 | 
|         sendMessagePath: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 会话内消息卡片图片,open-type="contact"时有效 | 
|         // 默认当前页面截图,只微信小程序有效 | 
|         sendMessageImg: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 是否显示会话内消息卡片,设置此参数为 true,用户进入客服会话会在右下角显示"可能要发送的小程序"提示, | 
|         // 用户点击后可以快速发送小程序消息,open-type="contact"时有效 | 
|         showMessageCard: { | 
|             type: Boolean, | 
|             default: false | 
|         }, | 
|         // 手指按(触摸)按钮时按钮时的背景颜色 | 
|         hoverBgColor: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 水波纹的背景颜色 | 
|         rippleBgColor: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 是否开启水波纹效果 | 
|         ripple: { | 
|             type: Boolean, | 
|             default: false | 
|         }, | 
|         // 按下的类名 | 
|         hoverClass: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 自定义样式,对象形式 | 
|         customStyle: { | 
|             type: Object, | 
|             default() { | 
|                 return {}; | 
|             } | 
|         }, | 
|         // 额外传参参数,用于小程序的data-xxx属性,通过target.dataset.name获取 | 
|         dataName: { | 
|             type: String, | 
|             default: '' | 
|         }, | 
|         // 节流,一定时间内只能触发一次 | 
|         throttleTime: { | 
|             type: [String, Number], | 
|             default: 1000 | 
|         }, | 
|         // 按住后多久出现点击态,单位毫秒 | 
|         hoverStartTime: { | 
|             type: [String, Number], | 
|             default: 20 | 
|         }, | 
|         // 手指松开后点击态保留时间,单位毫秒 | 
|         hoverStayTime: { | 
|             type: [String, Number], | 
|             default: 150 | 
|         }, | 
|     }, | 
|     computed: { | 
|         // 当没有传bgColor变量时,按钮按下去的颜色类名 | 
|         getHoverClass() { | 
|             // 如果开启水波纹效果,则不启用hover-class效果 | 
|             if (this.loading || this.disabled || this.ripple || this.hoverClass) return ''; | 
|             let hoverClass = ''; | 
|             hoverClass = this.plain ? 'u-' + this.type + '-plain-hover' : 'u-' + this.type + '-hover'; | 
|             return hoverClass; | 
|         }, | 
|         // 在'primary', 'success', 'error', 'warning'类型下,不显示边框,否则会造成四角有毛刺现象 | 
|         showHairLineBorder() { | 
|             if (['primary', 'success', 'error', 'warning'].indexOf(this.type) >= 0 && !this.plain) { | 
|                 return ''; | 
|             } else { | 
|                 return 'u-hairline-border'; | 
|             } | 
|         } | 
|     }, | 
|     data() { | 
|         return { | 
|             rippleTop: 0, // 水波纹的起点Y坐标到按钮上边界的距离 | 
|             rippleLeft: 0, // 水波纹起点X坐标到按钮左边界的距离 | 
|             fields: {}, // 波纹按钮节点信息 | 
|             waveActive: false // 激活水波纹 | 
|         }; | 
|     }, | 
|     methods: { | 
|         // 按钮点击 | 
|         click(e) { | 
|             // 进行节流控制,每this.throttle毫秒内,只在开始处执行 | 
|             this.$u.throttle(() => { | 
|                 // 如果按钮时disabled和loading状态,不触发水波纹效果 | 
|                 if (this.loading === true || this.disabled === true) return; | 
|                 // 是否开启水波纹效果 | 
|                 if (this.ripple) { | 
|                     // 每次点击时,移除上一次的类,再次添加,才能触发动画效果 | 
|                     this.waveActive = false; | 
|                     this.$nextTick(function() { | 
|                         this.getWaveQuery(e); | 
|                     }); | 
|                 } | 
|                 this.$emit('click', e); | 
|             }, this.throttleTime); | 
|         }, | 
|         // 查询按钮的节点信息 | 
|         getWaveQuery(e) { | 
|             this.getElQuery().then(res => { | 
|                 // 查询返回的是一个数组节点 | 
|                 let data = res[0]; | 
|                 // 查询不到节点信息,不操作 | 
|                 if (!data.width || !data.width) return; | 
|                 // 水波纹的最终形态是一个正方形(通过border-radius让其变为一个圆形),这里要保证正方形的边长等于按钮的最长边 | 
|                 // 最终的方形(变换后的圆形)才能覆盖整个按钮 | 
|                 data.targetWidth = data.height > data.width ? data.height : data.width; | 
|                 if (!data.targetWidth) return; | 
|                 this.fields = data; | 
|                 let touchesX = '', | 
|                     touchesY = ''; | 
|                 // #ifdef MP-BAIDU | 
|                 touchesX = e.changedTouches[0].clientX; | 
|                 touchesY = e.changedTouches[0].clientY; | 
|                 // #endif | 
|                 // #ifdef MP-ALIPAY | 
|                 touchesX = e.detail.clientX; | 
|                 touchesY = e.detail.clientY; | 
|                 // #endif | 
|                 // #ifndef MP-BAIDU || MP-ALIPAY | 
|                 touchesX = e.touches[0].clientX; | 
|                 touchesY = e.touches[0].clientY; | 
|                 // #endif | 
|                 // 获取触摸点相对于按钮上边和左边的x和y坐标,原理是通过屏幕的触摸点(touchesY),减去按钮的上边界data.top | 
|                 // 但是由于`transform-origin`默认是center,所以这里再减去半径才是水波纹view应该的位置 | 
|                 // 总的来说,就是把水波纹的矩形(变换后的圆形)的中心点,移动到我们的触摸点位置 | 
|                 this.rippleTop = touchesY - data.top - data.targetWidth / 2; | 
|                 this.rippleLeft = touchesX - data.left - data.targetWidth / 2; | 
|                 this.$nextTick(() => { | 
|                     this.waveActive = true; | 
|                 }); | 
|             }); | 
|         }, | 
|         // 获取节点信息 | 
|         getElQuery() { | 
|             return new Promise(resolve => { | 
|                 let queryInfo = ''; | 
|                 // 获取元素节点信息,请查看uniapp相关文档 | 
|                 // https://uniapp.dcloud.io/api/ui/nodes-info?id=nodesrefboundingclientrect | 
|                 queryInfo = uni.createSelectorQuery().in(this); | 
|                 //#ifdef MP-ALIPAY | 
|                 queryInfo = uni.createSelectorQuery(); | 
|                 //#endif | 
|                 queryInfo.select('.u-btn').boundingClientRect(); | 
|                 queryInfo.exec(data => { | 
|                     resolve(data); | 
|                 }); | 
|             }); | 
|         }, | 
|         // 下面为对接uniapp官方按钮开放能力事件回调的对接 | 
|         getphonenumber(res) { | 
|             this.$emit('getphonenumber', res); | 
|         }, | 
|         getuserinfo(res) { | 
|             this.$emit('getuserinfo', res); | 
|         }, | 
|         error(res) { | 
|             this.$emit('error', res); | 
|         }, | 
|         opensetting(res) { | 
|             this.$emit('opensetting', res); | 
|         }, | 
|         launchapp(res) { | 
|             this.$emit('launchapp', res); | 
|         } | 
|     } | 
| }; | 
| </script> | 
|   | 
| <style scoped lang="scss"> | 
| @import '../../libs/css/style.components.scss'; | 
| .u-btn::after { | 
|     border: none; | 
| } | 
|   | 
| .u-btn { | 
|     position: relative; | 
|     border: 0; | 
|     //border-radius: 10rpx; | 
|     /* #ifndef APP-NVUE */ | 
|     display: inline-flex;         | 
|     /* #endif */ | 
|     // 避免边框某些场景可能被“裁剪”,不能设置为hidden | 
|     overflow: visible; | 
|     line-height: 1; | 
|     @include vue-flex; | 
|     align-items: center; | 
|     justify-content: center; | 
|     cursor: pointer; | 
|     padding: 0 40rpx; | 
|     z-index: 1; | 
|     box-sizing: border-box; | 
|     transition: all 0.15s; | 
|      | 
|     &--bold-border { | 
|         border: 1px solid #ffffff; | 
|     } | 
|      | 
|     &--default { | 
|         color: $u-content-color; | 
|         border-color: #c0c4cc; | 
|         background-color: #ffffff; | 
|     } | 
|      | 
|     &--primary { | 
|         color: #ffffff; | 
|         border-color: $u-type-primary; | 
|         background-color: $u-type-primary; | 
|     } | 
|      | 
|     &--success { | 
|         color: #ffffff; | 
|         border-color: $u-type-success; | 
|         background-color: $u-type-success; | 
|     } | 
|      | 
|     &--error { | 
|         color: #ffffff; | 
|         border-color: $u-type-error; | 
|         background-color: $u-type-error; | 
|     } | 
|      | 
|     &--warning { | 
|         color: #ffffff; | 
|         border-color: $u-type-warning; | 
|         background-color: $u-type-warning; | 
|     } | 
|      | 
|     &--default--disabled { | 
|         color: #ffffff; | 
|         border-color: #e4e7ed; | 
|         background-color: #ffffff; | 
|     } | 
|      | 
|     &--primary--disabled { | 
|         color: #ffffff!important; | 
|         border-color: $u-type-primary-disabled!important; | 
|         background-color: $u-type-primary-disabled!important; | 
|     } | 
|      | 
|     &--success--disabled { | 
|         color: #ffffff!important; | 
|         border-color: $u-type-success-disabled!important; | 
|         background-color: $u-type-success-disabled!important; | 
|     } | 
|      | 
|     &--error--disabled { | 
|         color: #ffffff!important; | 
|         border-color: $u-type-error-disabled!important; | 
|         background-color: $u-type-error-disabled!important; | 
|     } | 
|      | 
|     &--warning--disabled { | 
|         color: #ffffff!important; | 
|         border-color: $u-type-warning-disabled!important; | 
|         background-color: $u-type-warning-disabled!important; | 
|     } | 
|      | 
|     &--primary--plain { | 
|         color: $u-type-primary!important; | 
|         border-color: $u-type-primary-disabled!important; | 
|         background-color: $u-type-primary-light!important; | 
|     } | 
|      | 
|     &--success--plain { | 
|         color: $u-type-success!important; | 
|         border-color: $u-type-success-disabled!important; | 
|         background-color: $u-type-success-light!important; | 
|     } | 
|      | 
|     &--error--plain { | 
|         color: $u-type-error!important; | 
|         border-color: $u-type-error-disabled!important; | 
|         background-color: $u-type-error-light!important; | 
|     } | 
|      | 
|     &--warning--plain { | 
|         color: $u-type-warning!important; | 
|         border-color: $u-type-warning-disabled!important; | 
|         background-color: $u-type-warning-light!important; | 
|     } | 
| } | 
|   | 
| .u-hairline-border:after { | 
|     content: ' '; | 
|     position: absolute; | 
|     pointer-events: none; | 
|     // 设置为border-box,意味着下面的scale缩小为0.5,实际上缩小的是伪元素的内容(border-box意味着内容不含border) | 
|     box-sizing: border-box; | 
|     // 中心点作为变形(scale())的原点 | 
|     -webkit-transform-origin: 0 0; | 
|     transform-origin: 0 0; | 
|     left: 0; | 
|     top: 0; | 
|     width: 199.8%; | 
|     height: 199.7%; | 
|     -webkit-transform: scale(0.5, 0.5); | 
|     transform: scale(0.5, 0.5); | 
|     border: 1px solid currentColor; | 
|     z-index: 1; | 
| } | 
|   | 
| .u-wave-ripple { | 
|     z-index: 0; | 
|     position: absolute; | 
|     border-radius: 100%; | 
|     background-clip: padding-box; | 
|     pointer-events: none; | 
|     user-select: none; | 
|     transform: scale(0); | 
|     opacity: 1; | 
|     transform-origin: center; | 
| } | 
|   | 
| .u-wave-ripple.u-wave-active { | 
|     opacity: 0; | 
|     transform: scale(2); | 
|     transition: opacity 1s linear, transform 0.4s linear; | 
| } | 
|   | 
| .u-round-circle { | 
|     border-radius: 100rpx; | 
| } | 
|   | 
| .u-round-circle::after { | 
|     border-radius: 100rpx; | 
| } | 
|   | 
| .u-loading::after { | 
|     background-color: hsla(0, 0%, 100%, 0.35); | 
| } | 
|   | 
| .u-size-default { | 
|     font-size: 30rpx; | 
|     height: 80rpx; | 
|     line-height: 80rpx; | 
| } | 
|   | 
| .u-size-medium { | 
|     /* #ifndef APP-NVUE */ | 
|     display: inline-flex;         | 
|     /* #endif */ | 
|     width: auto; | 
|     font-size: 26rpx; | 
|     height: 70rpx; | 
|     line-height: 70rpx; | 
|     padding: 0 80rpx; | 
| } | 
|   | 
| .u-size-mini { | 
|     /* #ifndef APP-NVUE */ | 
|     display: inline-flex;         | 
|     /* #endif */ | 
|     width: auto; | 
|     font-size: 22rpx; | 
|     padding-top: 1px; | 
|     height: 50rpx; | 
|     line-height: 50rpx; | 
|     padding: 0 20rpx; | 
| } | 
|   | 
| .u-primary-plain-hover { | 
|     color: #ffffff !important; | 
|     background: $u-type-primary-dark !important; | 
| } | 
|   | 
| .u-default-plain-hover { | 
|     color: $u-type-primary-dark !important; | 
|     background: $u-type-primary-light !important; | 
| } | 
|   | 
| .u-success-plain-hover { | 
|     color: #ffffff !important; | 
|     background: $u-type-success-dark !important; | 
| } | 
|   | 
| .u-warning-plain-hover { | 
|     color: #ffffff !important; | 
|     background: $u-type-warning-dark !important; | 
| } | 
|   | 
| .u-error-plain-hover { | 
|     color: #ffffff !important; | 
|     background: $u-type-error-dark !important; | 
| } | 
|   | 
| .u-info-plain-hover { | 
|     color: #ffffff !important; | 
|     background: $u-type-info-dark !important; | 
| } | 
|   | 
| .u-default-hover { | 
|     color: $u-type-primary-dark !important; | 
|     border-color: $u-type-primary-dark !important; | 
|     background-color: $u-type-primary-light !important; | 
| } | 
|   | 
| .u-primary-hover { | 
|     background: $u-type-primary-dark !important; | 
|     color: #fff; | 
| } | 
|   | 
| .u-success-hover { | 
|     background: $u-type-success-dark !important; | 
|     color: #fff; | 
| } | 
|   | 
| .u-info-hover { | 
|     background: $u-type-info-dark !important; | 
|     color: #fff; | 
| } | 
|   | 
| .u-warning-hover { | 
|     background: $u-type-warning-dark !important; | 
|     color: #fff; | 
| } | 
|   | 
| .u-error-hover { | 
|     background: $u-type-error-dark !important; | 
|     color: #fff; | 
| } | 
| </style> |