u-upload是uViewUI库的一个组件，用于图片和视频的上传操作。它支持多种配置选项，如accept（接受的文件类型）、capture（图片或视频拾取模式）、compressed（视频压缩）等。组件内部包含了预览、删除、状态显示等功能，还提供了自定义样式和事件回调，如afterRead、beforeRead等，方便开发者进行交互处理。
<template>
<view class="u-upload" :style="[$u.addStyle(customStyle)]">
<view class="u-upload__wrap" >
<template v-if="previewImage">
<view
class="u-upload__wrap__preview"
v-for="(item, index) in lists"
:key="index"
>
<image
v-if="item.isImage || (item.type && item.type === 'image')"
:src="item.thumb || item.url"
:mode="imageMode"
class="u-upload__wrap__preview__image"
@tap="onPreviewImage(item,index)"
:style="[{
width: $u.addUnit(width),
height: $u.addUnit(height)
}]"
/>
<!-- 主要是这段 -->
<view v-if="item.type && item.type === 'video'" class="u-upload__wrap__preview__other">
<image
:src="`${item.thumb || item.url}?ci-process=snapshot&time=1&format=jpg`"
:mode="imageMode"
class="u-upload__wrap__preview__image"
:style="[{
width: $u.addUnit(width),
height: $u.addUnit(height)
}]"
/>
<image src="@/static/img/pay.png" class="images" @click.stop="onPlay(item)" v-if="item.status === 'success'" />
</view>
<!-- 结尾 -->
<view
v-else
class="u-upload__wrap__preview__other"
>
<u-icon
color="#80CBF9"
size="26"
:name="item.isVideo || (item.type && item.type === 'video') ? 'movie' : 'folder'"
></u-icon>
<text class="u-upload__wrap__preview__other__text">{{item.isVideo || (item.type && item.type === 'video') ? '视频' : '文件'}}</text>
</view>
<view
class="u-upload__status"
v-if="item.status === 'uploading' || item.status === 'failed'"
>
<view class="u-upload__status__icon">
<u-icon
v-if="item.status === 'failed'"
name="close-circle"
color="#ffffff"
size="25"
/>
<u-loading-icon
size="22"
mode="circle"
color="#ffffff"
v-else
/>
</view>
<text
v-if="item.message"
class="u-upload__status__message"
>{{ item.message }}</text>
</view>
<view
class="u-upload__deletable"
v-if="item.status !== 'uploading' && (deletable || item.deletable)"
@tap.stop="deleteItem(index)"
>
<view class="u-upload__deletable__icon">
<u-icon
name="close"
color="#ffffff"
size="10"
></u-icon>
</view>
</view>
<view
class="u-upload__success"
v-if="item.status === 'success'"
>
<!-- #ifdef APP-NVUE -->
<image
:src="successIcon"
class="u-upload__success__icon"
></image>
<!-- #endif -->
<!-- #ifndef APP-NVUE -->
<view class="u-upload__success__icon">
<u-icon
name="checkmark"
color="#ffffff"
size="12"
></u-icon>
</view>
<!-- #endif -->
</view>
</view>
</template>
<template v-if="isInCount">
<view
v-if="$slots.default || $slots.$default"
@tap="chooseFile"
>
<slot />
</view>
<view
v-else
class="u-upload__button"
:hover-class="!disabled ? 'u-upload__button--hover' : ''"
hover-stay-time="150"
@tap="chooseFile"
:class="[disabled && 'u-upload__button--disabled']"
:style="[{
width: $u.addUnit(width),
height: $u.addUnit(height)
}]"
>
<u-icon
:name="uploadIcon"
size="26"
:color="uploadIconColor"
></u-icon>
<text
v-if="uploadText"
class="u-upload__button__text"
>{{ uploadText }}</text>
</view>
</template>
</view>
<!-- 视频播放弹窗 -->
<view v-if="tempVideoUrl" class="mask" @tap.stop="tempVideoUrl = ''">
<view class="block" @tap.stop>
<video :src="tempVideoUrl" class="temp" :poster="`${tempVideoUrl}?ci-process=snapshot&time=1&format=jpg`">
<cover-image src="@/static/img/w25.png" class="temp-img" @click.stop="tempVideoUrl = ''" />
</video>
</view>
</view>
<!-- 视频播放弹窗结束 -->
</view>
</template>
<script>
import {
chooseFile
} from './utils';
import mixinUp from './mixin.js';
import props from './props.js';
import mpMixin from '../../libs/mixin/mpMixin.js';
import mixin from '../../libs/mixin/mixin.js';
/**
* upload 上传
* @description 该组件用于上传图片场景
* @tutorial https://uviewui.com/components/upload.html
* @property {String} accept 接受的文件类型, 可选值为all media image file video （默认 'image' ）
* @property {String | Array} capture 图片或视频拾取模式，当accept为image类型时设置capture可选额外camera可以直接调起摄像头（默认 ['album', 'camera'] ）
* @property {Boolean} compressed 当accept为video时生效，是否压缩视频，默认为true（默认 true ）
* @property {String} camera 当accept为video时生效，可选值为back或front（默认 'back' ）
* @property {Number} maxDuration 当accept为video时生效，拍摄视频最长拍摄时间，单位秒（默认 60 ）
* @property {String} uploadIcon 上传区域的图标，只能内置图标（默认 'camera-fill' ）
* @property {String} uploadIconColor 上传区域的图标的字体颜色，只能内置图标（默认 #D3D4D6 ）
* @property {Boolean} useBeforeRead 是否开启文件读取前事件（默认 false ）
* @property {Boolean} previewFullImage 是否显示组件自带的图片预览功能（默认 true ）
* @property {String | Number} maxCount 最大上传数量（默认 52 ）
* @property {Boolean} disabled 是否启用（默认 false ）
* @property {String} imageMode 预览上传的图片时的裁剪模式，和image组件mode属性一致（默认 'aspectFill' ）
* @property {String} name 标识符，可以在回调函数的第二项参数中获取
* @property {Array} sizeType 所选的图片的尺寸, 可选值为original compressed（默认 ['original', 'compressed'] ）
* @property {Boolean} multiple 是否开启图片多选，部分安卓机型不支持 （默认 false ）
* @property {Boolean} deletable 是否展示删除按钮（默认 true ）
* @property {String | Number} maxSize 文件大小限制，单位为byte （默认 Number.MAX_VALUE ）
* @property {Array} fileList 显示已上传的文件列表
* @property {String} uploadText 上传区域的提示文字
* @property {String | Number} width 内部预览图片区域和选择图片按钮的区域宽度（默认 80 ）
* @property {String | Number} height 内部预览图片区域和选择图片按钮的区域高度（默认 80 ）
* @property {Object} customStyle 组件的样式，对象形式
* @event {Function} afterRead 读取后的处理函数
* @event {Function} beforeRead 读取前的处理函数
* @event {Function} oversize 文件超出大小限制
* @event {Function} clickPreview 点击预览图片
* @event {Function} delete 删除图片
* @example <u-upload :action="action" :fileList="fileList" ></u-upload>
*/
export default {
name: "u-upload",
mixins: [mpMixin, mixin, mixinUp, props],
data() {
return {
// #ifdef APP-NVUE
successIcon: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACgAAAAoCAYAAACM/rhtAAAAAXNSR0IArs4c6QAAAERlWElmTU0AKgAAAAgAAYdpAAQAAAABAAAAGgAAAAAAA6ABAAMAAAABAAEAAKACAAQAAAABAAAAKKADAAQAAAABAAAAKAAAAAB65masAAACP0lEQVRYCc3YXygsURwH8K/dpcWyG3LF5u/6/+dKVylSypuUl6uUPMifKMWL8oKEB1EUT1KeUPdR3uTNUsSLxb2udG/cbvInNuvf2rVnazZ/ZndmZ87snjM1Z+Z3zpzfp9+Z5mEAhlvjRtZgCKs+gnPAOcAkkMOR4jEHfItjDvgRxxSQD8cM0BuOCaAvXNCBQrigAsXgggYUiwsK0B9cwIH+4gIKlIILGFAqLiBAOTjFgXJxigJp4BQD0sIpAqSJow6kjSNAFTnRaHJwLenD6Mud52VQAcrBfTd2oyq+HtGaGGWAcnAVcXWoM3bCZrdi+ncPfaAcXE5UKVpdW/vitGPqqAtn98d0gXJwX7Qp6MmegUYVhvmTIezdmHlxJCjpHRTCFerLkRRu4k0aqdajN3sWOo0BK//msHa+xDuPC/oNFMKRhTtM4xjIX0SCNpXL4+7VIaHuyiWEp2L7ahWLf8fejfPdqPmC3mJicORZUp1CQzm+GiphvljGk+PBvWRbxii+xVTj5M6CiZ/tsDufvaXyxEUDxeLIyvu3m0iOyEFWVAkydcVYdyFrE9tQk9iMq6f/GNlvwt3LjQfh60LUrw9/cFyyMJUW/XkLSNMV4Mi6C5ML+ui4x5ClAX9sB9w0wV6wglJwJCv5fOxcr6EstgbGiEw4XcfUry4cWrcEUW8n+ARKxXEJHhw2WG43UKSvwI/TSZgvl7kh0b3XLZaLEy0QmMgLZAVH7J+ALOE+AVnDvQOyiPMAWcW5gSzjCPAV+78S5WE0GrQAAAAASUVORK5CYII=',
// #endif
lists: [],
isInCount: true,
tempVideoUrl: '',
}
},
watch: {
// 监听文件列表的变化，重新整理内部数据
fileList: {
immediate: true,
handler() {
this.formatFileList()
},
immediate: true,
deep: true,
},
},
// #ifdef VUE3
emits: ['error', 'beforeRead', 'oversize', 'afterRead', 'delete', 'clickPreview'],
// #endif
methods: {
//点击播放视频事件
onPlay(item, index) {
if (item.type && item.type === 'video' && item.status == 'success') {
this.tempVideoUrl = item.url.url
}
},
formatFileList() {
const {
fileList = [], maxCount
} = this;
const lists = fileList.map((item) =>
Object.assign(Object.assign({}, item), {
// 如果item.url为本地选择的blob文件的话，无法判断其为video还是image，此处优先通过accept做判断处理
isImage: this.accept === 'image',
isVideo: this.accept === 'video',
deletable: typeof(item.deletable) === 'boolean' ? item.deletable : this.deletable,
})
);
this.lists = lists
this.isInCount = lists.length < maxCount
},
chooseFile() {
const {
maxCount,
multiple,
lists,
disabled
} = this;
if (disabled) return;
// 如果用户传入的是字符串，需要格式化成数组
let capture;
try {
capture = uni.$u.test.array(this.capture) ? this.capture : this.capture.split(',');
}catch(e) {
capture = [];
}
chooseFile(
Object.assign({
accept: this.accept,
multiple: this.multiple,
capture: capture,
compressed: this.compressed,
maxDuration: this.maxDuration,
sizeType: this.sizeType,
camera: this.camera,
}, {
maxCount: maxCount - lists.length,
})
)
.then((res) => {
this.onBeforeRead(multiple ? res : res[0]);
})
.catch((error) => {
this.$emit('error', error);
});
},
// 文件读取之前
onBeforeRead(file) {
const {
beforeRead,
useBeforeRead,
} = this;
let res = true
// beforeRead是否为一个方法
if (uni.$u.test.func(beforeRead)) {
// 如果用户定义了此方法，则去执行此方法，并传入读取的文件回调
res = beforeRead(file, this.getDetail());
}
if (useBeforeRead) {
res = new Promise((resolve, reject) => {
this.$emit(
'beforeRead',
Object.assign(Object.assign({
file
}, this.getDetail()), {
callback: (ok) => {
ok ? resolve() : reject();
},
})
);
});
}
if (!res) {
return;
}
if (uni.$u.test.promise(res)) {
res.then((data) => this.onAfterRead(data || file));
} else {
this.onAfterRead(file);
}
},
getDetail(index) {
return {
name: this.name,
index: index == null ? this.fileList.length : index,
};
},
onAfterRead(file) {
const {
maxSize,
afterRead
} = this;
const oversize = Array.isArray(file) ?
file.some((item) => item.size > maxSize) :
file.size > maxSize;
if (oversize) {
this.$emit('oversize', Object.assign({
file
}, this.getDetail()));
return;
}
if (typeof afterRead === 'function') {
afterRead(file, this.getDetail());
}
this.$emit('afterRead', Object.assign({
file
}, this.getDetail()));
},
deleteItem(index) {
this.$emit(
'delete',
Object.assign(Object.assign({}, this.getDetail(index)), {
file: this.fileList[index],
})
);
},
// 预览图片
onPreviewImage(item,index) {
if (!item.isImage || !this.previewFullImage) return
console.log(this.tapUploadFlag,'+++++++++')
if(this.tapUploadFlag){
this.chooseFile()
}else{
uni.previewImage({
// 先filter找出为图片的item，再返回filter结果中的图片url
urls: this.lists.filter((item) => this.accept === 'image' || uni.$u.test.image(item.url || item.thumb)).map((item) => item.url || item.thumb),
current: item.url || item.thumb,
fail() {
uni.$u.toast('预览图片失败')
},
});
}
},
onPreviewVideo(event) {
if (!this.data.previewFullImage) return;
const {
index
} = event.currentTarget.dataset;
const {
lists
} = this.data;
wx.previewMedia({
sources: lists
.filter((item) => isVideoFile(item))
.map((item) =>
Object.assign(Object.assign({}, item), {
type: 'video'
})
),
current: index,
fail() {
uni.$u.toast('预览视频失败')
},
});
},
onClickPreview(event) {
const {
index
} = event.currentTarget.dataset;
const item = this.data.lists[index];
this.$emit(
'clickPreview',
Object.assign(Object.assign({}, item), this.getDetail(index))
);
}
}
}
</script>
<style lang="scss" scoped>
@import '../../libs/css/components.scss';
$u-upload-preview-border-radius: 2px !default;
$u-upload-preview-margin: 0 8px 8px 0 !default;
$u-upload-image-width:80px !default;
$u-upload-image-height:$u-upload-image-width;
$u-upload-other-bgColor: rgb(242, 242, 242) !default;
$u-upload-other-flex:1 !default;
$u-upload-text-font-size:11px !default;
$u-upload-text-color:$u-tips-color !default;
$u-upload-text-margin-top:2px !default;
$u-upload-deletable-right:0 !default;
$u-upload-deletable-top:0 !default;
$u-upload-deletable-bgColor:rgb(55, 55, 55) !default;
$u-upload-deletable-height:14px !default;
$u-upload-deletable-width:$u-upload-deletable-height;
$u-upload-deletable-boder-bottom-left-radius:100px !default;
$u-upload-deletable-zIndex:3 !default;
$u-upload-success-bottom:0 !default;
$u-upload-success-right:0 !default;
$u-upload-success-border-style:solid !default;
$u-upload-success-border-top-color:transparent !default;
$u-upload-success-border-left-color:transparent !default;
$u-upload-success-border-bottom-color: $u-success !default;
$u-upload-success-border-right-color:$u-upload-success-border-bottom-color;
$u-upload-success-border-width:9px !default;
$u-upload-icon-top:0px !default;
$u-upload-icon-right:0px !default;
$u-upload-icon-h5-top:1px !default;
$u-upload-icon-h5-right:0 !default;
$u-upload-icon-width:16px !default;
$u-upload-icon-height:$u-upload-icon-width;
$u-upload-success-icon-bottom:-10px !default;
$u-upload-success-icon-right:-10px !default;
$u-upload-status-right:0 !default;
$u-upload-status-left:0 !default;
$u-upload-status-bottom:0 !default;
$u-upload-status-top:0 !default;
$u-upload-status-bgColor:rgba(0, 0, 0, 0.5) !default;
$u-upload-status-icon-Zindex:1 !default;
$u-upload-message-font-size:12px !default;
$u-upload-message-color:#FFFFFF !default;
$u-upload-message-margin-top:5px !default;
$u-upload-button-width:80px !default;
$u-upload-button-height:$u-upload-button-width;
$u-upload-button-bgColor:rgb(244, 245, 247) !default;
$u-upload-button-border-radius:2px !default;
$u-upload-botton-margin: 0 8px 8px 0 !default;
$u-upload-text-font-size:11px !default;
$u-upload-text-color:$u-tips-color !default;
$u-upload-text-margin-top: 2px !default;
$u-upload-hover-bgColor:rgb(230, 231, 233) !default;
$u-upload-disabled-opacity:.5 !default;
:deep .uni-video-cover-duration { display: none; }
:deep .uni-video-cover-play-button { display: none; }
.video { position: relative; width: $u-upload-image-width; height: $u-upload-image-height; border-radius: $u-upload-preview-border-radius; }
.images { position: absolute; width: 100rpx; height: 100rpx; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: 1; }
.mask { background-color: #000; position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 99; }
.mask .block { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 100%; }
.temp { position: relative; width: 100%; height: 78vh; }
.temp-img { position: absolute; width: 40rpx; height: 40rpx; top: 20rpx; right: 40rpx; }
.u-upload {
@include flex(column);
flex: 1;
&__wrap {
@include flex;
flex-wrap: wrap;
flex: 1;
&__preview {
border-radius: $u-upload-preview-border-radius;
margin: $u-upload-preview-margin;
position: relative;
overflow: hidden;
@include flex;
&__image {
width: $u-upload-image-width;
height: $u-upload-image-height;
}
&__other {
width: $u-upload-image-width;
height: $u-upload-image-height;
background-color: $u-upload-other-bgColor;
flex: $u-upload-other-flex;
@include flex(column);
justify-content: center;
align-items: center;
&__text {
font-size: $u-upload-text-font-size;
color: $u-upload-text-color;
margin-top: $u-upload-text-margin-top;
}
}
}
}
&__deletable {
position: absolute;
top: $u-upload-deletable-top;
right: $u-upload-deletable-right;
background-color: $u-upload-deletable-bgColor;
height: $u-upload-deletable-height;
width: $u-upload-deletable-width;
@include flex;
border-bottom-left-radius: $u-upload-deletable-boder-bottom-left-radius;
align-items: center;
justify-content: center;
z-index: $u-upload-deletable-zIndex;
&__icon {
position: absolute;
transform: scale(0.7);
top: $u-upload-icon-top;
right: $u-upload-icon-right;
/* #ifdef H5 */
top: $u-upload-icon-h5-top;
right: $u-upload-icon-h5-right;
/* #endif */
}
}
&__success {
position: absolute;
bottom: $u-upload-success-bottom;
right: $u-upload-success-right;
@include flex;
// 由于weex(nvue)为阿里巴巴的KPI(部门业绩考核)的laji产物，不支持css绘制三角形
// 所以在nvue下使用图片，非nvue下使用css实现
/* #ifndef APP-NVUE */
border-style: $u-upload-success-border-style;
border-top-color: $u-upload-success-border-top-color;
border-left-color: $u-upload-success-border-left-color;
border-bottom-color: $u-upload-success-border-bottom-color;
border-right-color: $u-upload-success-border-right-color;
border-width: $u-upload-success-border-width;
align-items: center;
justify-content: center;
/* #endif */
&__icon {
/* #ifndef APP-NVUE */
position: absolute;
transform: scale(0.7);
bottom: $u-upload-success-icon-bottom;
right: $u-upload-success-icon-right;
/* #endif */
/* #ifdef APP-NVUE */
width: $u-upload-icon-width;
height: $u-upload-icon-height;
/* #endif */
}
}
&__status {
position: absolute;
top: $u-upload-status-top;
bottom: $u-upload-status-bottom;
left: $u-upload-status-left;
right: $u-upload-status-right;
background-color: $u-upload-status-bgColor;
@include flex(column);
align-items: center;
justify-content: center;
&__icon {
position: relative;
z-index: $u-upload-status-icon-Zindex;
}
&__message {
font-size: $u-upload-message-font-size;
color: $u-upload-message-color;
margin-top: $u-upload-message-margin-top;
}
}
&__button {
@include flex(column);
align-items: center;
justify-content: center;
width: $u-upload-button-width;
height: $u-upload-button-height;
background-color: $u-upload-button-bgColor;
border-radius: $u-upload-button-border-radius;
margin: $u-upload-botton-margin;
/* #ifndef APP-NVUE */
box-sizing: border-box;
/* #endif */
&__text {
font-size: $u-upload-text-font-size;
color: $u-upload-text-color;
margin-top: $u-upload-text-margin-top;
}
&--hover {
background-color: $u-upload-hover-bgColor;
}
&--disabled {
opacity: $u-upload-disabled-opacity;
}
}
}
</style>
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