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vue iview多張圖片大圖預(yù)覽、縮放翻轉(zhuǎn)

發(fā)布時(shí)間：2020-10-01 17:40:03 來(lái)源：腳本之家 閱讀：431 作者：強(qiáng)哥叨逼叨 欄目：web開(kāi)發(fā)

本文實(shí)例為大家分享了vue iview多張圖片大圖預(yù)覽，可縮放翻轉(zhuǎn)，供大家參考，具體內(nèi)容如下

先看效果：

vue iview多張圖片大圖預(yù)覽、縮放翻轉(zhuǎn)

完整項(xiàng)目代碼地址

具體代碼如下：

<style lang="less">
@import "../advanced-router.less";
</style>
 
<template>
 <div class="balance-accounts">
  <Row class-name="detail-row">
   <Card>
    <p slot="title">
     回單照片
    </p>
    <div class="demo-upload-list" v-for="(item,index) in opPicsList" :key="index">
     <img :src="item.url">
     <div class="demo-upload-list-cover">
      <Icon type="ios-search-strong" @click.native="handleView(item.name)"></Icon>
     </div>
    </div>
   </Card>
  </Row>
 </div>
</template>
<script>
import * as API from "@/api/adminApi";
import iconLeft from "@/images/icon-left.png";
import iconRight from "@/images/icon-right.png";
import iconClose from "@/images/icon-close.png";
import iconRotate from "@/images/icon-rotate.png";
import iconNoImages from "@/images/icon-no-images.png";
 
export default {
 name: "shopping-info",
 data() {
 return {
  opPicsList: [
  {
   name: "none",
   url: iconNoImages
  }
  ],
  bigImage: null,
  currentImageName: "",
  currentRotate: 0
 };
 },
 props: ['imageList'],
 methods: {
 loadDetail() {
  let vm = this;
  API.getFundClearDetail({ orderId: this.$route.query.orderId }).then(
  data => {
   if (data.resultObj.detail) {
   if (data.resultObj.detail.opPics.length > 0) {
    vm.opPicsList.splice(0, vm.opPicsList.length);
    data.resultObj.detail.opPics
    .split(",")
    .forEach((element, index) => {
     vm.opPicsList.push({
     name: index,
     url: element
     });
    });
   }
   }
  }
  );
 },
 rollImg() {
  /* 獲取當(dāng)前頁(yè)面的縮放比
   若未設(shè)置zoom縮放比，則為默認(rèn)100%，即1，原圖大小
  */
  var zoom = parseInt(this.bigImage.style.zoom) || 100;
  /* event.wheelDelta 獲取滾輪滾動(dòng)值并將滾動(dòng)值疊加給縮放比zoom
   wheelDelta統(tǒng)一為±120，其中正數(shù)表示為向上滾動(dòng)，負(fù)數(shù)表示向下滾動(dòng)
  */
  zoom += event.wheelDelta / 12;
  /* 如果縮放比大于0，則將縮放比加載到頁(yè)面元素 */
  if (zoom >= 100) {
  this.bigImage.style.zoom = zoom + "%";
  }
  /* 如果縮放比不大于0，則返回false，不執(zhí)行操作 */
  return false;
 },
 handleView(name) {
  if (this.opPicsList[0].name == "none") {
  this.$Message.error("沒(méi)有圖片哦~");
  return;
  }
  this.currentImageName = name;
 
  let elementArr = document.getElementsByClassName("showBigImage");
  if (elementArr.length == 0) {
  this.createShowImage();
  }
  for (let y = 0; y < this.opPicsList.length; y++) {
  if (name == this.opPicsList[y].name) {
   document.getElementById("bigImageE").src = this.opPicsList[y].url;
   break;
  }
  }
 },
 closeImageShow() {
  let elementArr = document.getElementsByClassName("showBigImage");
  let main = document.getElementsByClassName("main");
  let count = elementArr.length;
  for (let i = 0; i < count; i++) {
  main[0].removeChild(elementArr[0]);
  }
 },
 rotateImage() {
  let imageE = document.getElementById("bigImageE");
  this.currentRotate = (this.currentRotate + 90) % 360;
  imageE.style.transform =
  imageE.style.transform.split(" ")[0] +
  " rotate(" +
  this.currentRotate +
  "deg)";
 },
 toLeftImage() {
  for (let y = 0; y < this.opPicsList.length; y++) {
  if (this.currentImageName == this.opPicsList[y].name) {
   if (y - 1 < 0) {
   this.$Message.info("已經(jīng)是最左邊的一張圖了哦~");
   } else {
   this.currentImageName = this.opPicsList[y - 1].name;
   let imageE = document.getElementById("bigImageE");
   imageE.src = this.opPicsList[y - 1].url;
   // 加載完成執(zhí)行
   imageE.onload = function() {
    if (imageE.naturalHeight < window.innerHeight) {
    //圖片高度小于屏幕則需要垂直居中處理
    imageE.style.height = imageE.naturalHeight + "px";
    imageE.style.top = "50%";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(-50%)";
    imageE.style.zoom = "100%";
    } else {
    //需要去除前一張圖片的效果
    imageE.style.height = window.innerHeight + "px";
    imageE.style.top = "0";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(0%)";
    imageE.style.zoom = "100%";
    }
   };
   }
   break;
  }
  }
 },
 toRightImage() {
  for (let y = 0; y < this.opPicsList.length; y++) {
  if (this.currentImageName == this.opPicsList[y].name) {
   if (y + 1 == this.opPicsList.length) {
   this.$Message.info("已經(jīng)是最右邊的一張圖了哦~");
   } else {
   this.currentImageName = this.opPicsList[y + 1].name;
   let imageE = document.getElementById("bigImageE");
   imageE.src = this.opPicsList[y + 1].url;
   // 加載完成執(zhí)行
   imageE.onload = function() {
    if (imageE.naturalHeight < window.innerHeight) {
    //圖片高度小于屏幕則需要垂直居中處理
    imageE.style.height = imageE.naturalHeight + "px";
    imageE.style.top = "50%";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(-50%)";
    imageE.style.zoom = "100%";
    } else {
    //需要去除前一張圖片的效果
    imageE.style.height = window.innerHeight + "px";
    imageE.style.top = "0";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(0%)";
    imageE.style.zoom = "100%";
    }
   };
   }
   break;
  }
  }
 },
 createShowImage() {
  //創(chuàng)建圖片顯示
  let main = document.getElementsByClassName("main");
  let topContainer = document.createElement("div");
  let scrollContainer = document.createElement("div");
  topContainer.style.position = "fixed";
  topContainer.style.zIndex = "80";
  topContainer.style.background = "rgba(0,0,0,0.80)";
  topContainer.style.height = "100%";
  topContainer.style.width = "100%";
  topContainer.style.textAlign = "center";
  topContainer.className = "showBigImage";
 
  let imageContainer = document.createElement("div");
  imageContainer.style.width = window.innerWidth + "px";
  imageContainer.style.height = window.innerHeight + "px";
  imageContainer.style.margin = "0 auto";
  imageContainer.style.overflow = "auto";
  imageContainer.style.top = "50%";
  imageContainer.style.position = "relative";
  imageContainer.style.transform = "translateY(-50%)";
 
  let imageE = document.createElement("img");
  imageE.src = iconNoImages;
  imageE.title = "鼠標(biāo)滾輪滾動(dòng)可縮放圖片";
  imageE.id = "bigImageE";
  // 加載完成執(zhí)行
  imageE.onload = function() {
  if (imageE.naturalHeight < window.innerHeight) {
   //圖片高度小于屏幕則需要垂直居中處理
   // imageE.style.width = "100%";
   imageE.style.top = "50%";
   imageE.style.position = "relative";
   imageE.style.transform = "translateY(-50%)";
  } else {
   imageE.style.height = window.innerHeight + "px";
  }
  };
 
  this.bigImage = imageE;
 
  //添加鼠標(biāo)滾輪事件縮放圖片
  if (imageE.addEventListener) {
  // IE9, Chrome, Safari, Opera
  imageE.addEventListener("mousewheel", this.rollImg, false);
  // Firefox
  imageE.addEventListener("DOMMouseScroll", this.rollImg, false);
  } else {
  // IE 6/7/8
  imageE.attachEvent("onmousewheel", this.rollImg);
  }
  imageContainer.appendChild(imageE);
  topContainer.appendChild(imageContainer);
 
  main[0].appendChild(topContainer);
 
  //創(chuàng)建點(diǎn)擊左右瀏覽按鈕
  //左按鈕
  let imgLeft = document.createElement("img");
  imgLeft.src = iconLeft;
  imgLeft.style.zIndex = "101";
  imgLeft.style.position = "fixed";
  imgLeft.style.top = "50%";
  imgLeft.style.transform = "translateY(-50%)";
  imgLeft.style.left = "12%";
  imgLeft.style.cursor = "pointer";
  imgLeft.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件切換圖片
  imgLeft.addEventListener("click", this.toLeftImage);
  //右按鈕
  let imgRight = document.createElement("img");
  imgRight.src = iconRight;
  imgRight.style.zIndex = "101";
  imgRight.style.position = "fixed";
  imgRight.style.top = "50%";
  imgRight.style.transform = "translateY(-50%)";
  imgRight.style.right = "12%";
  imgRight.style.cursor = "pointer";
  imgRight.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件切換圖片
  imgRight.addEventListener("click", this.toRightImage);
 
  //大圖片選轉(zhuǎn)
  let imgRotate = document.createElement("img");
  imgRotate.id = "rotateImageBtn";
  imgRotate.src = iconRotate;
  imgRotate.style.zIndex = "102";
  imgRotate.style.position = "fixed";
  imgRotate.style.top = "5%";
  imgRotate.style.right = "5%";
  imgRotate.style.transform = "translateY(-50%)";
  imgRotate.style.cursor = "pointer";
  imgRotate.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件旋轉(zhuǎn)大圖
  imgRotate.addEventListener("click", this.rotateImage);
 
  //關(guān)閉按鈕
  let imgClose = document.createElement("img");
  imgClose.src = iconClose;
  imgClose.style.zIndex = "101";
  imgClose.style.position = "fixed";
  imgClose.style.top = "5%";
  imgClose.style.right = "1%";
  imgClose.style.transform = "translateY(-50%)";
  imgClose.style.cursor = "pointer";
  imgClose.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件關(guān)閉顯示大圖
  imgClose.addEventListener("click", this.closeImageShow);
 
  main[0].appendChild(imgLeft);
  main[0].appendChild(imgRight);
  main[0].appendChild(imgClose);
  main[0].appendChild(imgRotate);
 
 }
 },
 mounted() {
 this.loadDetail();
 }
};
</script>

可以看到，這個(gè)圖片大圖預(yù)覽是用js創(chuàng)建的，而且是在main元素下添加的元素。因?yàn)檫@個(gè)是在ivew-admin框架下寫的，其主要內(nèi)容區(qū)的z-index是比菜單和header小的，所以如果在內(nèi)容去寫這個(gè)圖片全局預(yù)覽陰影區(qū)域無(wú)法覆蓋整個(gè)頁(yè)面。所以需要在main下加入元素。

組件方式：

<template>
 <div>
 </div>
</template>
<script>
import iconLeft from "@/images/icon-left.png";
import iconRight from "@/images/icon-right.png";
import iconClose from "@/images/icon-close.png";
import iconRotate from "@/images/icon-rotate.png";
import iconNoImages from "@/images/icon-no-images.png";
import {IMAGE_URL_PREFIX} from "@/config/constant";
export default {
 data() {
 return {
  opPicsList: [
  {
   name: "none",
   url: iconNoImages
  }
  ],
  imgName: "",
  bigImage: null,
  currentImageName: "",
  currentRotate: 0
 };
 },
 props: {
 },
 methods: {
 loadImages(opPics) {
  this.opPicsList.splice(0, this.opPicsList.length);
  opPics.split(",").forEach((element, index) => {
  this.opPicsList.push({
   name: index,
   url: IMAGE_URL_PREFIX + element
  });
  });
  this.handleView("0");
 },
 rollImg() {
  /* 獲取當(dāng)前頁(yè)面的縮放比
   若未設(shè)置zoom縮放比，則為默認(rèn)100%，即1，原圖大小
  */
 
  var zoom = parseInt(this.bigImage.style.zoom) || 100;
  /* event.wheelDelta 獲取滾輪滾動(dòng)值并將滾動(dòng)值疊加給縮放比zoom
   wheelDelta統(tǒng)一為±120，其中正數(shù)表示為向上滾動(dòng)，負(fù)數(shù)表示向下滾動(dòng)
  */
  zoom += event.wheelDelta / 12;
  /* 如果縮放比大于0，則將縮放比加載到頁(yè)面元素 */
  if (zoom >= 100) {
  this.bigImage.style.zoom = zoom + "%";
  }
  /* 如果縮放比不大于0，則返回false，不執(zhí)行操作 */
  return false;
 },
 handleView(name) {
  if (this.opPicsList[0].name == "none") {
  this.$Message.error("沒(méi)有圖片哦~");
  return;
  }
  this.currentImageName = name;
 
  let elementArr = document.getElementsByClassName("showBigImage");
  if (elementArr.length == 0) {
  this.createShowImage();
  }
  for (let y = 0; y < this.opPicsList.length; y++) {
  if (name == this.opPicsList[y].name) {
   document.getElementById("bigImageE").src = this.opPicsList[y].url;
   // debugger
   // document.getElementById("bigImageE").width = this.opPicsList[y].url;
   // document.getElementById("bigImageE").height = this.opPicsList[y].url;
   // for (let i = 0; i < elementArr.length; i++) {
   // elementArr[i].style.display = "block";
   // }
   break;
  }
  }
 },
 closeImageShow() {
  let elementArr = document.getElementsByClassName("showBigImage");
  let main = document.getElementsByClassName("main");
  let count = elementArr.length;
  for (let i = 0; i < count; i++) {
  main[0].removeChild(elementArr[0]);
  }
 },
 rotateImage() {
  let imageE = document.getElementById("bigImageE");
  this.currentRotate = (this.currentRotate + 90) % 360;
  imageE.style.transform =
  imageE.style.transform.split(" ")[0] +
  " rotate(" +
  this.currentRotate +
  "deg)";
 },
 toLeftImage() {
  for (let y = 0; y < this.opPicsList.length; y++) {
  if (this.currentImageName == this.opPicsList[y].name) {
   if (y - 1 < 0) {
   this.$Message.info("已經(jīng)是最左邊的一張圖了哦~");
   } else {
   this.currentImageName = this.opPicsList[y - 1].name;
   let imageE = document.getElementById("bigImageE");
   imageE.src = this.opPicsList[y - 1].url;
   // 加載完成執(zhí)行
   imageE.onload = function() {
    if (imageE.naturalHeight < window.innerHeight) {
    //圖片高度小于屏幕則需要垂直居中處理
    imageE.style.height = imageE.naturalHeight + "px";
    imageE.style.top = "50%";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(-50%)";
    imageE.style.zoom = "100%";
    } else {
    //需要去除前一張圖片的效果
    imageE.style.height = window.innerHeight + "px";
    imageE.style.top = "0";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(0%)";
    imageE.style.zoom = "100%";
    }
   };
   }
   break;
  }
  }
 },
 toRightImage() {
  for (let y = 0; y < this.opPicsList.length; y++) {
  if (this.currentImageName == this.opPicsList[y].name) {
   if (y + 1 == this.opPicsList.length) {
   this.$Message.info("已經(jīng)是最右邊的一張圖了哦~");
   } else {
   this.currentImageName = this.opPicsList[y + 1].name;
   let imageE = document.getElementById("bigImageE");
   imageE.src = this.opPicsList[y + 1].url;
   // 加載完成執(zhí)行
   imageE.onload = function() {
    if (imageE.naturalHeight < window.innerHeight) {
    //圖片高度小于屏幕則需要垂直居中處理
    imageE.style.height = imageE.naturalHeight + "px";
    imageE.style.top = "50%";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(-50%)";
    imageE.style.zoom = "100%";
    } else {
    //需要去除前一張圖片的效果
    imageE.style.height = window.innerHeight + "px";
    imageE.style.top = "0";
    imageE.style.position = "relative";
    imageE.style.transform = "translateY(0%)";
    imageE.style.zoom = "100%";
    }
   };
   }
   break;
  }
  }
 },
 createShowImage() {
  //創(chuàng)建圖片顯示
  // let elementArr = document.getElementsByClassName("showBigImage");
  // if (elementArr.length == 0) {
  let main = document.getElementsByClassName("main");
  let topContainer = document.createElement("div");
  let scrollContainer = document.createElement("div");
  topContainer.style.position = "fixed";
  topContainer.style.zIndex = "80";
  topContainer.style.background = "rgba(0,0,0,0.80)";
  topContainer.style.height = "100%";
  topContainer.style.width = "100%";
  topContainer.style.textAlign = "center";
  topContainer.className = "showBigImage";
  // topContainer.style.display = "none";
 
  let imageContainer = document.createElement("div");
  imageContainer.style.width = window.innerWidth + "px";
  imageContainer.style.height = window.innerHeight + "px";
  imageContainer.style.margin = "0 auto";
  imageContainer.style.overflow = "auto";
  imageContainer.style.top = "50%";
  imageContainer.style.position = "relative";
  imageContainer.style.transform = "translateY(-50%)";
 
  let imageE = document.createElement("img");
  imageE.src = iconNoImages;
  imageE.title = "鼠標(biāo)滾輪滾動(dòng)可縮放圖片";
  imageE.id = "bigImageE";
  // 加載完成執(zhí)行
  imageE.onload = function() {
  if (imageE.naturalHeight < window.innerHeight) {
   //圖片高度小于屏幕則需要垂直居中處理
   // imageE.style.width = "100%";
   imageE.style.top = "50%";
   imageE.style.position = "relative";
   imageE.style.transform = "translateY(-50%)";
  } else {
   imageE.style.height = window.innerHeight + "px";
  }
  };
  // imageE.style.width = "100%";
  // imageE.style.width = "475px";
  // imageE.style.height = window.innerHeight + 'px';
 
  // imageE.style.objectFit= "scale-down";
  // imageE.style.height = "100%";
  // imageE.style.top = "50%";
  // imageE.style.position = "relative";
  // imageE.style.transform = "translateY(-50%)";
  this.bigImage = imageE;
 
  //添加鼠標(biāo)滾輪事件縮放圖片
  if (imageE.addEventListener) {
  // IE9, Chrome, Safari, Opera
  imageE.addEventListener("mousewheel", this.rollImg, false);
  // Firefox
  imageE.addEventListener("DOMMouseScroll", this.rollImg, false);
  } else {
  // IE 6/7/8
  imageE.attachEvent("onmousewheel", this.rollImg);
  }
  imageContainer.appendChild(imageE);
  topContainer.appendChild(imageContainer);
 
  main[0].appendChild(topContainer);
 
  //創(chuàng)建點(diǎn)擊左右瀏覽按鈕
  //左按鈕
  let imgLeft = document.createElement("img");
  imgLeft.src = iconLeft;
  imgLeft.style.zIndex = "101";
  imgLeft.style.position = "fixed";
  imgLeft.style.top = "50%";
  imgLeft.style.transform = "translateY(-50%)";
  imgLeft.style.left = "12%";
  imgLeft.style.cursor = "pointer";
  imgLeft.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件切換圖片
  imgLeft.addEventListener("click", this.toLeftImage);
  //右按鈕
  let imgRight = document.createElement("img");
  imgRight.src = iconRight;
  imgRight.style.zIndex = "101";
  imgRight.style.position = "fixed";
  imgRight.style.top = "50%";
  imgRight.style.transform = "translateY(-50%)";
  imgRight.style.right = "12%";
  imgRight.style.cursor = "pointer";
  imgRight.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件切換圖片
  imgRight.addEventListener("click", this.toRightImage);
 
  //大圖片選轉(zhuǎn)
  let imgRotate = document.createElement("img");
  imgRotate.id = "rotateImageBtn";
  imgRotate.src = iconRotate;
  imgRotate.style.zIndex = "102";
  imgRotate.style.position = "fixed";
  imgRotate.style.top = "5%";
  imgRotate.style.right = "5%";
  imgRotate.style.transform = "translateY(-50%)";
  imgRotate.style.cursor = "pointer";
  imgRotate.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件旋轉(zhuǎn)大圖
  imgRotate.addEventListener("click", this.rotateImage);
 
  //關(guān)閉按鈕
  let imgClose = document.createElement("img");
  imgClose.src = iconClose;
  imgClose.style.zIndex = "101";
  imgClose.style.position = "fixed";
  imgClose.style.top = "5%";
  imgClose.style.right = "1%";
  imgClose.style.transform = "translateY(-50%)";
  imgClose.style.cursor = "pointer";
  imgClose.className = "showBigImage";
  //添加鼠標(biāo)點(diǎn)擊事件關(guān)閉顯示大圖
  imgClose.addEventListener("click", this.closeImageShow);
 
  // imgLeft.style.display = "none";
  // imgRight.style.display = "none";
  // imgClose.style.display = "none";
  main[0].appendChild(imgLeft);
  main[0].appendChild(imgRight);
  main[0].appendChild(imgClose);
  main[0].appendChild(imgRotate);
  // main[0].style.textAlign = "center";
  // this.imgName = name;
  // this.visible = true;
  // }
 }
 },
 mounted() {
 // this.loadImages();
 }
};
</script>

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