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<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 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 hover-class="none" 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',
emits: ["click", "getphonenumber", "getuserinfo", "error", "opensetting", "launchapp"],
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: 500
},
// 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
},
timerId: {
type: [String, Number]
},
},
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() {
let btnTimerId = this.timerId || "button_" + Math.floor(Math.random() * 100000000 + 0);
return {
btnTimerId,
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.$emit('click', e);
}, this.throttleTime, true, this.btnTimerId);
},
// 查询按钮的节点信息
getWaveQuery(e) {
this.getElQuery().then(res => {
// 查询返回的是一个数组节点
let data = res[0];
// 查询不到节点信息,不操作
if (!data.width || !data.width) return;
// 水波纹的最终形态是一个正方形(通过border-radius让其变为一个圆形),这里要保证正方形的边长等于按钮的最长边
// 最终的方形(变换后的圆形)才能覆盖整个按钮
data.targetWidth = data.height > data.width ? data.height : data.width;
if (!data.targetWidth) return;
this.fields = data;
let touchesX = '',
touchesY = '';
// #ifdef MP-BAIDU
touchesX = e.changedTouches[0].clientX;
touchesY = e.changedTouches[0].clientY;
// #endif
// #ifdef MP-ALIPAY
touchesX = e.detail.clientX;
touchesY = e.detail.clientY;
// #endif
// #ifndef MP-BAIDU || MP-ALIPAY
touchesX = e.touches[0].clientX;
touchesY = e.touches[0].clientY;
// #endif
// 获取触摸点相对于按钮上边和左边的x和y坐标,原理是通过屏幕的触摸点(touchesY),减去按钮的上边界data.top
// 但是由于`transform-origin`默认是center,所以这里再减去半径才是水波纹view应该的位置
// 总的来说,就是把水波纹的矩形(变换后的圆形)的中心点,移动到我们的触摸点位置
this.rippleTop = touchesY - data.top - data.targetWidth / 2;
this.rippleLeft = touchesX - data.left - data.targetWidth / 2;
this.$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>