431 lines
11 KiB
Vue
431 lines
11 KiB
Vue
<template>
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<!-- 多图上传支持拖拽排序 -->
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<view class="con">
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<movable-area class="area" :style="{ height: areaHeight }" @mouseenter="mouseenter" @mouseleave="mouseleave">
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<block v-for="(item, index) in imageList" :key="item.id">
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<movable-view class="view" :x="item.x" :y="item.y" direction="all" :damping="40" :disabled="item.disable" @change="onChange($event, item)"
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@touchstart="touchstart(item)" @mousedown="touchstart(item)" @touchend="touchend(item)" @mouseup="touchend(item)"
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:style="{ width: viewWidth + 'px', height: viewWidth + 'px', 'z-index': item.zIndex, opacity: item.opacity }">
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<view class="area-con" :style="{ width: childWidth, height: childWidth, transform: 'scale(' + item.scale + ')' }">
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<image class="pre-image" :src="item.src" mode="aspectFill"></image>
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<view class="del-con" @click="delImage(item, index)" @touchstart.stop="delImageMp(item, index)" @touchend.stop="nothing()"
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@mousedown.stop="nothing()" @mouseup.stop="nothing()">
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<view class="del-wrap">
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<image class="del-image" src="https://renwu.xiansqx.com/img/20210813/f44b954827604db8bc9c93f0ffc88ab5.png"></image>
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</view>
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</view>
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</view>
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</movable-view>
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</block>
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<view class="add" v-if="imageList.length < number" :style="{ top: add.y, left: add.x, width: viewWidth + 'px', height: viewWidth + 'px' }"
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@click="addImages">
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<view class="add-wrap" :style="{ width: childWidth, height: childWidth }">
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<image style="width: 192rpx;height: 192rpx;" src="https://renwu.xiansqx.com/img/20210813/f44b954827604db8bc9c93f0ffc88ab5.png"></image>
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</view>
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</view>
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</movable-area>
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</view>
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</template>
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<script>
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import * as websocketUtils from 'utils/websocketUtils.js';
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export default {
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data() {
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return {
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imageList: [],
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width: 0,
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add: {
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x: 0,
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y: 0
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},
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colsValue: 0,
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viewWidth: 0,
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tempItem: null,
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timer: null,
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changeStatus: true,
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preStatus: true,
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}
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},
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props: {
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// 返回排序后图片
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list: {
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type: Array,
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default: function() {
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return []
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}
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},
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// 选择图片数量限制
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number: {
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type: Number,
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default: 5
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},
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// 图片父容器宽度（实际显示的图片宽度为 imageWidth / 1.1 ），单位 rpx
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imageWidth: {
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type: Number,
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default: 230
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},
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// 图片列数（cols > 0 则 imageWidth 无效）
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cols: {
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type: Number,
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default: 3
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},
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// 图片周围空白填充，单位 rpx
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padding: {
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type: Number,
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default: 10
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},
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// 拖动图片时放大倍数 [0, ∞)
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scale: {
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type: Number,
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default: 1.1
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},
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// 拖动图片时不透明度
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opacity: {
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type: Number,
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default: 0.7
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},
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// 自定义添加（需配合 @aaddImage 事件使用）
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custom: {
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type: Boolean,
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default: false
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}
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},
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computed: {
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areaHeight() {
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if (this.imageList.length < this.number) {
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return Math.ceil((this.imageList.length + 1) / this.colsValue) * this.viewWidth + 'px'
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} else {
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return Math.ceil(this.imageList.length / this.colsValue) * this.viewWidth + 'px'
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}
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},
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childWidth() {
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return this.viewWidth - this.rpx2px(this.padding) * 2 + 'px'
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},
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},
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created() {
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this.width = uni.getSystemInfoSync().windowWidth
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this.viewWidth = this.rpx2px(this.imageWidth)
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},
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mounted() {
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const query = uni.createSelectorQuery().in(this)
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query.select('.area').boundingClientRect(data => {
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this.colsValue = Math.floor(data.width / this.viewWidth)
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if (this.cols > 0) {
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this.colsValue = this.cols
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this.viewWidth = data.width / this.cols
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}
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for (let item of this.list) {
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this.addProperties(item)
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}
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})
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query.exec()
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},
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methods: {
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onChange(e, item) {
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if (!item) return
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item.oldX = e.detail.x
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item.oldY = e.detail.y
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if (e.detail.source === 'touch') {
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if (item.moveEnd) {
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item.offset = Math.sqrt(Math.pow(item.oldX - item.absX * this.viewWidth, 2) + Math.pow(item.oldY - item.absY *
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this.viewWidth, 2))
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}
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let x = Math.floor((e.detail.x + this.viewWidth / 2) / this.viewWidth)
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if (x >= this.colsValue) return
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let y = Math.floor((e.detail.y + this.viewWidth / 2) / this.viewWidth)
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let index = this.colsValue * y + x
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if (item.index != index && index < this.imageList.length) {
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this.changeStatus = false
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for (let obj of this.imageList) {
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if (item.index > index && obj.index >= index && obj.index < item.index) {
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this.change(obj, 1)
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} else if (item.index < index && obj.index <= index && obj.index > item.index) {
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this.change(obj, -1)
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} else if (obj.id != item.id) {
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obj.offset = 0
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obj.x = obj.oldX
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obj.y = obj.oldY
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setTimeout(() => {
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this.$nextTick(() => {
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obj.x = obj.absX * this.viewWidth
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obj.y = obj.absY * this.viewWidth
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})
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}, 0)
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}
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}
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item.index = index
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item.absX = x
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item.absY = y
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this.sortList()
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}
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}
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},
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change(obj, i) {
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obj.index += i
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obj.offset = 0
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obj.x = obj.oldX
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obj.y = obj.oldY
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obj.absX = obj.index % this.colsValue
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obj.absY = Math.floor(obj.index / this.colsValue)
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setTimeout(() => {
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this.$nextTick(() => {
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obj.x = obj.absX * this.viewWidth
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obj.y = obj.absY * this.viewWidth
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})
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}, 0)
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},
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touchstart(item) {
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this.imageList.forEach(v => {
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v.zIndex = v.index + 9
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})
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item.zIndex = 99
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item.moveEnd = true
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this.tempItem = item
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this.timer = setTimeout(() => {
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item.scale = this.scale
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item.opacity = this.opacity
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clearTimeout(this.timer)
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this.timer = null
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}, 200)
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},
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touchend(item) {
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this.previewImage(item)
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item.scale = 1
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item.opacity = 1
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item.x = item.oldX
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item.y = item.oldY
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item.offset = 0
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item.moveEnd = false
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setTimeout(() => {
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this.$nextTick(() => {
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item.x = item.absX * this.viewWidth
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item.y = item.absY * this.viewWidth
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this.tempItem = null
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this.changeStatus = true
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})
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}, 0)
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},
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previewImage(item) {
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if (this.timer && this.preStatus && this.changeStatus && item.offset < 28.28) {
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clearTimeout(this.timer)
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this.timer = null
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let src = this.list.findIndex(v => v === item.src)
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uni.previewImage({
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urls: this.list,
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current: src,
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success: () => {
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this.preStatus = false
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setTimeout(() => {
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this.preStatus = true
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}, 600)
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}
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})
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} else if (this.timer) {
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clearTimeout(this.timer)
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this.timer = null
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}
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},
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mouseenter() {
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//#ifdef H5
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this.imageList.forEach(v => {
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v.disable = false
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})
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//#endif
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},
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mouseleave() {
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//#ifdef H5
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if (this.tempItem) {
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this.imageList.forEach(v => {
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v.disable = true
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v.zIndex = v.index + 9
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v.offset = 0
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v.moveEnd = false
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if (v.id == this.tempItem.id) {
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if (this.timer) {
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clearTimeout(this.timer)
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this.timer = null
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}
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v.scale = 1
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v.opacity = 1
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v.x = v.oldX
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v.y = v.oldY
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this.$nextTick(() => {
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v.x = v.absX * this.viewWidth
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v.y = v.absY * this.viewWidth
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this.tempItem = null
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})
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}
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})
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this.changeStatus = true
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}
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//#endif
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},
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addImages() {
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console.log('addImages')
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if (this.custom) {
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this.$emit('addImage')
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} else {
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let checkNumber = this.number - this.imageList.length
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uni.chooseImage({
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count: checkNumber,
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sourceType: ['album', 'camera'],
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success: res => {
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let count = checkNumber <= res.tempFilePaths.length ? checkNumber : res.tempFilePaths.length
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for (let i = 0; i < count; i++) {
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this.$queue.showLoading("上传中...");
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uni.uploadFile({ // 上传接口
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url: websocketUtils.uploadFileUrl(), //真实的接口地址
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filePath: res.tempFilePaths[i],
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name: 'file',
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success: (uploadFileRes) => {
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// this.addProperties(JSON.parse(uploadFileRes.data).data.src) //列表接口
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this.addProperties(JSON.parse(uploadFileRes.data).data)
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uni.hideLoading();
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}
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});
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}
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}
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})
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}
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},
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addImage(image) {
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this.addProperties(image)
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},
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delImage(item, index) {
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this.imageList.splice(index, 1)
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for (let obj of this.imageList) {
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if (obj.index > item.index) {
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obj.index -= 1
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obj.x = obj.oldX
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obj.y = obj.oldY
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obj.absX = obj.index % this.colsValue
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obj.absY = Math.floor(obj.index / this.colsValue)
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this.$nextTick(() => {
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obj.x = obj.absX * this.viewWidth
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obj.y = obj.absY * this.viewWidth
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})
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}
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}
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this.add.x = (this.imageList.length % this.colsValue) * this.viewWidth + 'px'
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this.add.y = Math.floor(this.imageList.length / this.colsValue) * this.viewWidth + 'px'
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this.sortList()
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},
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delImageMp(item, index) {
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//#ifdef MP
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this.delImage(item, index)
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//#endif
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},
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sortList() {
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let list = this.imageList.slice()
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console.log('获取到上传图片的列表', this.imageList)
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list.sort((a, b) => {
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return a.index - b.index
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})
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for (let i = 0; i < list.length; i++) {
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list[i] = list[i].src
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}
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console.log('list', list)
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this.$emit('update:list', list)
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},
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addProperties(item) {
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let absX = this.imageList.length % this.colsValue
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let absY = Math.floor(this.imageList.length / this.colsValue)
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let x = absX * this.viewWidth
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let y = absY * this.viewWidth
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this.imageList.push({
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src: item,
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x,
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y,
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oldX: x,
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oldY: y,
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absX,
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absY,
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scale: 1,
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zIndex: 9,
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opacity: 1,
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index: this.imageList.length,
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id: this.guid(),
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disable: false,
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offset: 0,
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moveEnd: false
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})
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this.add.x = (this.imageList.length % this.colsValue) * this.viewWidth + 'px'
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this.add.y = Math.floor(this.imageList.length / this.colsValue) * this.viewWidth + 'px'
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this.sortList()
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},
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nothing() {},
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rpx2px(v) {
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return this.width * v / 750
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},
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guid() {
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function S4() {
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return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
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}
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return (S4() + S4() + "-" + S4() + "-" + S4() + "-" + S4() + "-" + S4() + S4() + S4());
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}
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}
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}
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</script>
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<style lang="scss" scoped>
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.con {
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// padding: 30rpx;
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.area {
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width: 100%;
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.view {
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display: flex;
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justify-content: center;
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align-items: center;
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.area-con {
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position: relative;
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.pre-image {
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width: 100%;
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height: 100%;
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}
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.del-con {
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position: absolute;
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top: -8rpx;
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right: -4rpx;
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padding: 0 0 20rpx 20rpx;
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.del-wrap {
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width: 36rpx;
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height: 36rpx;
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background-color: #ff0000;
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border-radius: 50%;
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display: flex;
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justify-content: center;
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align-items: center;
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.del-image {
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width: 20rpx;
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height: 20rpx;
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}
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}
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}
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}
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}
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.add {
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position: absolute;
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display: flex;
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justify-content: center;
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align-items: center;
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.add-wrap {
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display: flex;
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justify-content: center;
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align-items: center;
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background-color: #FFFFFF;
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}
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}
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}
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}
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</style>
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