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<template>
<div class="doc-image">
<div v-if="isPdf" class="p-2 flex items-center view-pdf">
<doc-icon type="doc-PDF" style="font-size: .48rem" class="shrink-0"/>
<span class="grow px-4 text-ellipsis">{{name}}</span>
<span class="close-btn" @click.stop="removeBtn" v-if="remove">
<doc-icon type="close-circle" />
</span>
</div>
<div class="view-img" v-if="status==='success' && !isPdf">
<img :src="src" :alt="name"
:loading="loading" >
</div>
<template v-if="!isPdf">
<div class="doc-image-wrapper" v-if="status==='loading'">
<slot name="placeholder">
<div class="doc-image-default">加载中...</div>
</slot>
</div>
<div class="doc-image-wrapper" v-if="status==='fail'">
<slot name="fail">
<div class="doc-image-default">加载失败</div>
</slot>
</div>
<span class="close-btn" @click.stop="removeBtn" v-if="remove">
<doc-icon type="close-circle" />
</span>
</template>
</div>
</template>
<script>
export default {
name: 'doc-image',
props: {
src: String,
// 浏览器应当如何加载该图像
// img标签中的属性 需要浏览器支持
// https://developer.mozilla.org/zh-CN/docs/Web/HTML/Element/img
// eager 立即加载图像
// lazy 延迟加载图像，直到它和视口接近到一个计算得到的距离
loading: String,
// 开启删除功能
remove: Boolean,
// 处理pdf预览
isPdf: Boolean,
name: String
},
emits: ['removeBtn'],
data() {
return {
// 图片加载状态 loading | fail | success
status: 'loading',
imgStyle: {},
// viewer显示
visible: false,
// 按键界面显示
btVisible: false
}
},
methods: {
loadImage() {
if (this.isPdf) {
this.status = 'success'
return
}
const image = new Image()
image.onload = () => {
this.show = true
this.status = 'success'
}
image.onerror = (err) => {
console.warn('doc-image', err)
this.show = false
this.status = 'fail'
}
this.status = 'loading'
image.src = this.src
},
removeBtn() {
this.btVisible = false
this.$emit('onRemove', this.src)
}
},
watch: {
src: {
handler(val) {
if (val) {
this.loadImage()
}
},
immediate: true
}
}
}
</script>
<style lang="less" scoped>
.doc-image {
display: inline-block;
width: 100%;
height: 100%;
position: relative;
.view-img {
width: 100%;
height: 100%;
min-height: 90px;
border: 1px dashed #d9d9d9;
background: #fafafa;
img {
width: 100%;
height: 90px;
object-fit: contain;
}
}
.view-pdf {
width: 100%;
min-height: 48px;
overflow-y: hidden;
border-radius: 8px;
border: 1px solid #EEEEEE;
.close-btn {
top: 50%;
right: 8px;
transform: translateY(-50%);
}
}
.close-btn {
position: absolute;
font-size: 16px;
top: -8px;
right: -8px;
}
}
.doc-image-wrapper {
width: 100%;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
}
.doc-image-default {
width: 100%;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
font-size: 14px;
background: #f5faf7;
color: #a8abb2;
vertical-align: middle;
user-select: none;
}
</style>