two.vue
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<template>
<div class="pdf_container">
<NafmHeader navClass="nafmii-head-bg3" title="详情页面">
<template #bottom>
<div class="header">
<div class="header_left">
<span class="pre" @click="handlePre">上一页</span>
<span class="next" @click="handleNext">下一页</span>
</div>
<div class="center">
<input type="text" v-model.number="inputValue" class="inputClass" @change="handleChange"> <span>/ {{pageCount}}</span>
</div>
<div class="header_right">
<span class="pre" @click="handleScaleBig">放大</span>
<span class="pre" @click="handleScaleSmall">缩小</span>
<span class="next" @click="handleReset">重置</span>
</div>
</div>
</template>
</NafmHeader>
<Pdf v-for="(i,index) in numPages" :key="i" :src="src" :ref="`wrapper${index}`" :page="i" @num-pages="pageCount = $event" @page-loaded="currentPage = $event" />
</div>
</template>
<script>
import Pdf from 'vue-pdf'
export default {
components: {
Pdf
},
data() {
return {
inputValue: 1,
currentPage: 0,
pageCount: 0,
fileUrl: `${window.location.origin}/study.pdf`,
numPages: undefined,
src: '',
scale: 100,
}
},
created() {
this.src = Pdf.createLoadingTask(this.fileUrl)
this.src.promise.then(pdf => {
this.numPages = pdf.numPages
})
},
mounted() {
// this.src.promise.then(pdf => {
// this.numPages = pdf.numPages
// })
console.log('---', this.currentPage)
},
methods: {
onLoad(val) {
this.currentPage = val || 1
this.inputValue = this.currentPage
// this.src.then(pdf => { this.currentPage = pdf.numPages; });
},
handlePre() {
if (this.currentPage == 1) {
Toast('已在第一页')
return
} else {
this.currentPage--
}
this.inputValue = this.currentPage
},
handleNext() {
if (this.currentPage == this.pageCount) {
Toast('已在末页')
return
} else {
this.currentPage++
}
this.inputValue = this.currentPage
},
pageLoad(val) {
console.log(val, this.currentPage);
},
handleChange(e) {
console.log('val-->', val)
const val = e.target.value
if (val > this.pageCount) {
Toast('输入值不能大于总页数')
this.inputValue = ''
return
}
if (val < 1 || val == "" || val == '') {
Toast('输入值小于了最小页数')
this.inputValue = ''
return
}
try {
console.log('val', val);
this.currentPage = Number(val)
} catch (e) {
console.log(e);
}
},
handleScaleBig() {
const canvas = document.querySelector('canvas')
this.scale += 10;
// canvas.style.width = parseInt(this.scale) + "%";
canvas.style.width = parseInt(this.scale) + "%";
canvas.style.height = parseInt(100) + "%";
},
handleScaleSmall() {
const canvas = document.querySelector('canvas')
if (this.scale == 100) {
return;
}
this.scale += -10;
canvas.style.width = parseInt(this.scale) + "%";
canvas.style.height = parseInt(100) + "%";
},
handleReset() {
const canvas = document.querySelector('canvas')
canvas.style.width = parseInt(100) + "%";
canvas.style.height = parseInt(100) + "%";
this.currentPage = 1
this.inputValue = 1
}
}
}
</script>
<style lang="less" scoped>
.header {
display: flex;
height: 50px;
align-items: center;
.pre {
width: 50px;
margin-right: 5px;
}
.next {
width: 50px;
}
.center {
flex: 1;
display: flex;
justify-content: center;
align-items: center;
}
}
.inputClass {
width: 50px;
color: #333;
margin-right: 2px;
text-align: center;
}
/deep/ .annotationLayer {
margin-bottom: 10px;
border-bottom: 10px solid #ccc;
}
</style>