368 lines
9.4 KiB
Vue
368 lines
9.4 KiB
Vue
<template>
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<div class="gva-cropper-btn">
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<label :class="`btn btn-${props.btnType}`" :for="`uploads_${props.name}`">
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<el-icon>
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<Crop />
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</el-icon>
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<span>裁剪上传</span>
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</label>
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<input type="file" :id="`uploads_${props.name}`" style="display: none;"
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accept="image/png, image/jpeg, image/gif, image/jpg, image/webp" @change="handleSelectImg($event)">
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</div>
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<el-drawer v-model="showDrawer" title="上传头像" direction="ltr" :show-close="false" :close-on-press-escape="false"
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:close-on-click-modal="false" :size="Math.max(800, Math.min(1500, props.imgWidth + 140))">
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<template #header>
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<div class="flex justify-between items-center">
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<span class="text-lg">裁剪上传图片</span>
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<div>
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<el-button type="primary" @click="handleConfirm('blob')">确 定</el-button>
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<el-button @click="showDrawer = false">取 消</el-button>
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</div>
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</div>
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</template>
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<div class="gva-cropper-content flex">
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<div class="cropper"
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:style="{ 'width': Math.max(760, Math.min(1500, props.imgWidth + 100)) + 'px', 'min-height': Math.max(Math.min(props.imgHeight + 200, 900), 500) + 'px' }">
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<div class="gva-btn-list">
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<el-button @click="changeScale(1)">
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<el-icon>
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<ZoomIn />
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</el-icon>
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</el-button>
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<el-button @click="changeScale(-1)">
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<el-icon>
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<ZoomOut />
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</el-icon>
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</el-button>
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<el-button @click="rotateLeft">
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<el-icon>
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<RefreshLeft />
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</el-icon>
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</el-button>
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<el-button @click="rotateRight">
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<el-icon>
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<RefreshRight />
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</el-icon>
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</el-button>
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</div>
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<vue-cropper v-if="showDrawer" ref="vueCropperRef" :outputSize="1" outputType="png" :img="vueCropperImg"
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:info="true" :full="true" autoCrop :centerBox="props.cropType === 'fixed' ? true : false"
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:autoCropWidth="props.imgWidth" :autoCropHeight="props.imgHeight"
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:fixedBox="props.cropType === 'fixed' ? true : false" :fixedNumber="props.fixedNumber" :maxImgSize="2000" />
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</div>
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</div>
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</el-drawer>
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</template>
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<script setup>
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import { ref } from 'vue'
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import VueCropper from "@/components/vueCropper";
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import { ElMessage } from 'element-plus'
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import axios from 'axios'
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defineOptions({
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name: 'CropperImg',
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})
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const showDrawer = ref(false)
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const vueCropperImg = ref(null)
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const vueCropperRef = ref(null)
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const props = defineProps({
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imgWidth: {
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required: true,
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type: Number
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},
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imgHeight: {
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required: true,
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type: Number
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},
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category: {
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required: true,
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type: String
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},
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name: {
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type: String,
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default: 'media'
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},
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cropType: {
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type: String,
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default: 'fixed'
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},
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outputSize: {
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type: Number,
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default: 1
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},
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fixed: {
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type: Boolean,
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default: true
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},
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fixedNumber: {
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type: Array,
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default: function () {
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return [1, 1]
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}
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},
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btnType: {
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type: String,
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default: 'default'
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},
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})
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const emits = defineEmits(['on-success', 'update:modelValue'])
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const changeScale = (num) => {
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num = num || 1
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vueCropperRef.value.changeScale(num)
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}
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const rotateLeft = () => {
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vueCropperRef.value.rotateLeft()
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}
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const rotateRight = () => {
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vueCropperRef.value.rotateRight()
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}
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// 实时预览函数
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// const realTime = (data) => {
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// previews.value = data
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// }
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const handleConfirm = (type) => {
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// 输出
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if (type === 'blob') {
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vueCropperRef.value.getCropBlob(async (data) => {
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doConfirm(data)
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})
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} else {
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vueCropperRef.getCropData(async (data) => {
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doConfirm(data)
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})
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}
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}
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// 判断是哪种缩放方式
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const doConfirm = (cropData) => {
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const originalBlob = cropData // 原始 Blob 对象
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const desiredWidth = props.imgWidth// 所需的宽度
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const desiredHeight = props.imgHeight // 所需的高度
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if (props.cropType == 'fixed') {
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// 如果是需要固定宽高的图片，直接调用方法缩放图片
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handleResizeBlob(originalBlob, desiredWidth, desiredHeight)
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} else if (props.cropType == 'max') {
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// 如果是需要不超过xxx宽高的图片，先做判断
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var blob = new Blob([cropData], { type: 'image/png' })
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var img = new Image()
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var url = window.URL.createObjectURL(blob)
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img.src = url
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img.onload = function () {
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// 获取图像的宽度和高度
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var width = img.width
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var height = img.height
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if (width <= desiredWidth && height <= desiredHeight) {
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// 如果裁剪完未超过限制，则直接去上传
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uploadImage(cropData)
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} else {
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// 如果裁剪完超过限制，则调用方法缩放图片
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handleResizeBlob(originalBlob, desiredWidth, desiredHeight)
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}
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// 清理 URL 对象
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window.URL.revokeObjectURL(url)
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}
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}
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}
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// 缩放图片
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const resizeBlob = (blob, desiredWidth, desiredHeight) => {
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return new Promise((resolve, reject) => {
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const img = new Image()
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img.onload = () => {
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const canvas = document.createElement('canvas')
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const ctx = canvas.getContext('2d')
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// 计算缩放比例
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const scaleX = desiredWidth / img.width
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const scaleY = desiredHeight / img.height
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const scale = Math.min(scaleX, scaleY)
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// 设置 Canvas 的宽度和高度
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canvas.width = desiredWidth
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canvas.height = desiredHeight
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// 绘制图片到 Canvas 上，并进行缩放
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ctx.drawImage(img, 0, 0, img.width * scale, img.height * scale)
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// 将 Canvas 中的图像转换为 Blob 对象
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canvas.toBlob((resizedBlob) => {
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resolve(resizedBlob)
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}, blob.type)
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}
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img.onerror = (error) => {
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reject(error)
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}
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img.src = window.URL.createObjectURL(blob)
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})
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}
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// 缩放后上传
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const handleResizeBlob = (originalBlob, desiredWidth, desiredHeight) => {
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resizeBlob(originalBlob, desiredWidth, desiredHeight)
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.then((resizedBlob) => {
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uploadImage(resizedBlob)
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})
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.catch((error) => {
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console.error('Error resizing Blob:', error)
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})
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}
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const uploadImage = (data) => {
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const formData = new FormData();
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formData.append('file', data, props.name + '_image.png'); // 假设使用'image.jpg'作为上传的文件名
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const path = import.meta.env.VITE_BASE_API + '/cms/mediaFile/upload?category=' + props.category
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axios.post(path, formData, {
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headers: {
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'Content-Type': 'multipart/form-data'
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}
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})
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.then(res => {
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// 处理上传成功的响应
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if (res.data.code === 0) {
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emits('on-success', res.data)
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emits('update:modelValue', res.data.data.url)
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showDrawer.value = false
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} else {
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ElMessage({
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type: 'error',
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message: '上传失败'
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})
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}
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})
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.catch(error => {
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// 处理上传失败的错误
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console.error('上传失败', error);
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ElMessage({
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type: 'error',
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message: '上传失败'
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})
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})
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}
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const handleSelectImg = (e) => {
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var file = e.target.files[0]
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if (! /\.(gif|jpg|jpeg|png|bmp|webp|GIF|JPG|PNG)$/.test(e.target.value)) {
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ElMessage({
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type: 'error',
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message: '图片类型必须是.gif,jpeg,jpg,png,bmp中的一种'
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})
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return false
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}
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var reader = new FileReader()
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reader.onloadend = (e) => {
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let data
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if (typeof e.target.result === 'object') {
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// 把Array Buffer转化为blob 如果是base64不需要
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data = window.URL.createObjectURL(new Blob([e.target.result]))
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} else {
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data = e.target.result
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}
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vueCropperImg.value = data
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showDrawer.value = true
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}
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reader.readAsArrayBuffer(file)
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e.target.value = ''
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}
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// 初始化方法
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const open = async (data) => {
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showDrawer.value = true
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vueCropperImg.value = data
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}
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// 对外暴露方法
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defineExpose({ open })
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</script>
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<style lang="scss">
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.gva-cropper-content {
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justify-content: flex-start;
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-webkit-justify-content: flex-start;
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.cropper {
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width: 565px;
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height: 600px;
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.gva-btn-list {
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justify-content: center;
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-webkit-justify-content: center;
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}
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}
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.show-preview {
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margin-right: 15px;
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.preview-title {
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line-height: 42px;
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}
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.preview {
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box-sizing: border-box;
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overflow: hidden;
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/*border-radius: 50%;*/
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border: 2px solid var(--el-border-color-dark);
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background: #cccccc;
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margin-right: 20px;
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}
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}
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}
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.gva-cropper-btn {
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display: inline-flex;
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.btn {
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min-width: 108px;
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display: inline-flex;
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box-sizing: border-box;
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line-height: 1;
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height: 32px;
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padding: 8px 15px;
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border-radius: var(--el-border-radius-base);
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cursor: pointer;
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position: relative;
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overflow: hidden;
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transition: var(--el-transition-duration-fast);
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vertical-align: middle;
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justify-content: center;
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align-items: center;
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outline: none;
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>span {
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margin-left: 6px;
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}
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}
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.btn-default {
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border: 1px solid var(--el-border-color);
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color: var(--el-text-color-regular);
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background-color: var(--el-fill-color-blank);
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}
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.btn-default:hover {
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border-color: var(--el-color-primary);
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color: var(--el-color-primary);
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}
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.btn-primary {
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border: 1px solid var(--el-color-primary-light-5);
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color: var(--el-color-primary);
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background-color: var(--el-color-primary-light-9);
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}
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.btn-primary:hover {
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border: 1px solid var(--el-color-primary);
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color: var(--el-color-white);
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background-color: var(--el-color-primary);
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}
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}
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</style>
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