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imgviewer.html 3.6 KB
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电证前端整合
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潘际乾 committed
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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Photo viewer</title>
  <style type="text/css">
    * {
      margin: 0px;
      padding: 0px;
      border: 0px;
    }

    html,
    body {
      width: 100%;
      height: 100%;
      background-color: rgb(71, 71, 71);
    }

    .imgshow {
      /* margin: 0px auto; */
      width: 100%;
      height: 96%;
      position: relative;
      border: 5px solid rgb(62, 62, 62);
      border-top: 0px;
      background-color: #f5f2ef;
      overflow: auto;
      box-sizing: border-box;
    }

    .down {
      width: 100%;
      height: 4%;
      min-height: 26px;
      background-color: rgb(71, 71, 71);
    }

    .down button::before {
      position: absolute;
      display: inline-block;
      top: 1px;
      left: 85%;
    }

    .down button:hover {
      transform: opacity .9s;
      opacity: 0.9;
      cursor: pointer;
    }

    .imgshow img {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      /* cursor: -webkit-grab; */
      cursor: pointer;
    }

    .download::before {
      content: '';
      display: block;
      height: 25px;
      width: 25px;
      background: url(images/toolbarButton-download@2x.png);
      background-size: cover;
      /* content: url(images/toolbarButton-download@2x.png); */
    }
  </style>

</head>

<body>
  <div class="down">
    <button class="download" onclick="download()" title="下载"></button>
  </div>

  <div class="imgshow">
    <img id="myimg" src="" onerror="Onerr()" onmousewheel="MouseWheelHandler()" />
  </div>

  <script type="text/javascript">
    var imgurl = window.opener.url
    var filnam = window.opener.nam
    var cnt = 0
    // function geturl() {
    //   // var index = imgurl.lastIndexOf("=");
    //   // imgurl = imgurl.substring(index + 1, imgurl.length);
    // }

    // //html加载时获取文件路径
    // window.onload = function () {
    // geturl()
    console.log(imgurl)
    document.getElementById('myimg').src = imgurl;
    // }

    //越权后执行
    function Onerr() {
      if (cnt === 1) {
        var img = document.getElementById('myimg');
        img.src = "images/error.png";
      }
      if (cnt > 1) {
        img.onerror = null;
      }
      cnt++;
      // console.log(img.src)
    }


    // 滚轮放大或缩小
    function MouseWheelHandler(e) {
      var e = window.event || e;
      // console.dir(e)
      var delta = Math.max(-1, Math.min(1, (e.wheelDelta || -e.detail)));
      myimg.style.width = Math.max(50, Math.min(8000, myimg.width + (30 * delta))) + "px";
      return false;
    }

    // 下载
    function download() {
      if (!!window.ActiveXObject || "ActiveXObject" in window) {
        var elemIF = document.createElement("iframe");
        elemIF.src = document.getElementById("myimg").src
        elemIF.style.display = "none";
        document.body.appendChild(elemIF);
      }
      else {
        const link = document.createElement('a')
        link.style.display = 'none'
        link.href = document.getElementById("myimg").src
        link.setAttribute('download', filnam + "." + filtyp)
        document.body.appendChild(link)
        link.click()
        document.body.removeChild(link)
      }
      // const link = document.createElement('a')
      // link.style.display = 'none'
      // link.href = document.getElementById("myimg").src
      // link.setAttribute('download', filnam)
      // document.body.appendChild(link)
      // link.click()
      // document.body.removeChild(link)
    }
  </script>
</body>

</html>