javascript - 打印时如何在页面上添加水印或 Logo

Question

我有一个 text-editor

我想要一个脚本，这样我们的 Logo 或水印将自动出现在文本编辑器的打印页面中，而无需在由 contenteditable 制作的文本编辑器中插入我们的 Logo 或水印，因为用户可以删除它，我试过了某些技巧，但所有这些都是快速修复，在我的文本编辑器中不起作用，并且被某些用户绕过是否有任何解决方案或想法或提示可以帮助我？这是script文本编辑器的

var oDoc, sDefTxt;

function initDoc() {
  oDoc = document.getElementById("textBox");
  sDefTxt = oDoc.innerHTML;
  if (document.compForm.switchMode.checked) { setDocMode(true); }
}

function formatDoc(sCmd, sValue) {
  if (validateMode()) { document.execCommand(sCmd, false, sValue); oDoc.focus(); }
}

function validateMode() {
  if (!document.compForm.switchMode.checked) { return true ; }
  alert("Uncheck \"Show HTML\".");
  oDoc.focus();
  return false;
}

function setDocMode(bToSource) {
  var oContent;
  if (bToSource) {
    oContent = document.createTextNode(oDoc.innerHTML);
    oDoc.innerHTML = "";
    var oPre = document.createElement("pre");
    oDoc.contentEditable = false;
    oPre.id = "sourceText";
    oPre.contentEditable = true;
    oPre.appendChild(oContent);
    oDoc.appendChild(oPre);
    document.execCommand("defaultParagraphSeparator", false, "div");
  } else {
    if (document.all) {
      oDoc.innerHTML = oDoc.innerText;
    } else {
      oContent = document.createRange();
      oContent.selectNodeContents(oDoc.firstChild);
      oDoc.innerHTML = oContent.toString();
    }
    oDoc.contentEditable = true;
  }
  oDoc.focus();
}




function printDoc() {
 if (!validateMode()) { return; }
var printContents = document.getElementById('textBox').innerHTML;
var originalContents = document.body.innerHTML;
document.body.innerHTML = printContents;
window.print();
document.body.innerHTML = originalContents;
}




var cssPagedMedia = (function () {
    var style = document.createElement('style');
    document.head.appendChild(style);
    return function (rule) {
        style.innerHTML = rule;
    };
}());

cssPagedMedia.margin = function (margin) {
    cssPagedMedia('@page {margin: ' + margin + '}');
};

cssPagedMedia.margin('0');

cssPagedMedia.size = function (size) {
    cssPagedMedia('@page {size: ' + size + '}');
};

var cssPagedMedia = (function () {
    var style = document.createElement('style');
    document.head.appendChild(style);
    return function (rule) {
        style.innerHTML = rule;
    };
}());

cssPagedMedia.size = function (size) {
    cssPagedMedia('@page {size: ' + size + '}');
};

cssPagedMedia.size('portrait');

Answer 1

正如我在上面的评论中所解释的，您可以修改/添加到 printDoc() 函数内的 printContents 变量。

我创建了一个变量 WaterMark，您可以将其替换为您的 Logo /水印。

这是一个JsFiddle Demo和下面的工作片段。

var oDoc, sDefTxt;

function initDoc() {
  oDoc = document.getElementById("textBox");
  sDefTxt = oDoc.innerHTML;
  if (document.compForm.switchMode.checked) {
    setDocMode(true);
  }
}

function formatDoc(sCmd, sValue) {
  if (validateMode()) {
    document.execCommand(sCmd, false, sValue);
    oDoc.focus();
  }
}

function validateMode() {
  if (!document.compForm.switchMode.checked) {
    return true;
  }
  alert("Uncheck \"Show HTML\".");
  oDoc.focus();
  return false;
}

function setDocMode(bToSource) {
  var oContent;
  if (bToSource) {
    oContent = document.createTextNode(oDoc.innerHTML);
    oDoc.innerHTML = "";
    var oPre = document.createElement("pre");
    oDoc.contentEditable = false;
    oPre.id = "sourceText";
    oPre.contentEditable = true;
    oPre.appendChild(oContent);
    oDoc.appendChild(oPre);
    document.execCommand("defaultParagraphSeparator", false, "div");
  } else {
    if (document.all) {
      oDoc.innerHTML = oDoc.innerText;
    } else {
      oContent = document.createRange();
      oContent.selectNodeContents(oDoc.firstChild);
      oDoc.innerHTML = oContent.toString();
    }
    oDoc.contentEditable = true;
  }
  oDoc.focus();
}




function printDoc() {
  if (!validateMode()) {
    return;
  }
  // Add your watermark here  
  var WaterMark = '<div style="width:150px;position:fixed;bottom:5px;right:5px;opacity:.8;">StackOverFlow</div>';
  var printContents = document.getElementById('textBox').innerHTML;
  var originalContents = document.body.innerHTML;
  document.body.innerHTML = printContents + WaterMark;
  window.print();
  document.body.innerHTML = originalContents;
}
/*page margin*/
var cssPagedMedia = (function() {
  var style = document.createElement('style');
  document.head.appendChild(style);
  return function(rule) {
    style.innerHTML = rule;
  };
}());

cssPagedMedia.margin = function(margin) {
  cssPagedMedia('@page {margin: ' + margin + '}');
};

cssPagedMedia.margin('0');
/*page size*/
cssPagedMedia.size = function(size) {
  cssPagedMedia('@page {size: ' + size + '}');
};

var cssPagedMedia = (function() {
  var style = document.createElement('style');
  document.head.appendChild(style);
  return function(rule) {
    style.innerHTML = rule;
  };
}());
cssPagedMedia.size = function(size) {
  cssPagedMedia('@page {size: ' + size + '}');
};
cssPagedMedia.size('portrait');

.intLink {
  cursor: pointer;
}

img.intLink {
  border: 0;
}

#toolBar1 select {
  font-size: 10px;
}

#textBox {
  width: 540px;
  height: 500px;
  border: 1px #000000 solid;
  padding: 12px;
  overflow: scroll;
}

#textBox #sourceText {
  padding: 0;
  margin: 0;
  min-width: 498px;
  min-height: 200px;
}

.unselectable {
  -moz-user-select: -moz-none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  -o-user-select: none;
  user-select: none;
  cursor: not-allowed;
}

#editMode label {
  cursor: pointer;
}

<div id="printa">

  <body onload="initDoc();">
    <form name="compForm" method="post" action="sample.php" onsubmit="if(validateMode()){this.myDoc.value=oDoc.innerHTML;return true;}return false;">
      <input type="hidden" name="myDoc">
      <div id="toolBar1">
        <select onchange="formatDoc('formatblock',this[this.selectedIndex].value);this.selectedIndex=0;">
          <option selected>- التنسيق -</option>
          <option value="h1">عنوان 1 &lt;h1&gt;</option>
          <option value="h2">عنوان 2 &lt;h2&gt;</option>
          <option value="h3">عنوان 3 &lt;h3&gt;</option>
          <option value="h4">عنوان 4 &lt;h4&gt;</option>
          <option value="h5">عنوان 5 &lt;h5&gt;</option>
          <option value="h6">عنوان فرعي &lt;h6&gt;</option>
          <option value="p">فقرة &lt;p&gt;</option>
          <option value="pre">مهيأ مسبقا &lt;pre&gt;</option>
        </select>
        <select onchange="formatDoc('fontname',this[this.selectedIndex].value);this.selectedIndex=0;">
          <option class="heading" selected>- الخطوط -</option>
          <option>Arial</option>
          <option>Arial Black</option>
          <option>Courier New</option>
          <option>Times New Roman</option>
        </select>
        <select onchange="formatDoc('fontsize',this[this.selectedIndex].value);this.selectedIndex=0;">
          <option class="heading" selected>- الحجم -</option>
          <option value="1">صغير جدا</option>
          <option value="2">صغير بعض الشيء</option>
          <option value="3">عادي</option>
          <option value="4">متوسط - كبير</option>
          <option value="5">كبير</option>
          <option value="6">كبير جدا</option>
          <option value="7">أقصى</option>
        </select>
        <select onchange="formatDoc('forecolor',this[this.selectedIndex].value);this.selectedIndex=0;">
          <option class="heading" selected>- اللون -</option>
          <option value="red">أحمر</option>
          <option value="blue">أزرق</option>
          <option value="green">أخضر</option>
          <option value="black">أسود</option>
        </select>
        <select onchange="formatDoc('backcolor',this[this.selectedIndex].value);this.selectedIndex=0;">
          <option class="heading" selected>- الخلفية -</option>
          <option value="red">أحمر</option>
          <option value="green">أخضر</option>
          <option value="black">أسود</option>
        </select>
      </div>
      <div id="toolBar2">
        <img class="intLink" title="طباعة" onclick="printDoc();" src="data:image/png;base64,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">
        <img class="intLink" title="خط عريض " onclick="formatDoc('bold');" src="data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWABYAQAInhI+pa+H9mJy0LhdgtrxzDG5WGFVk6aXqyk6Y9kXvKKNuLbb6zgMFADs=" />
        <img class="intLink" title="خط مائل" onclick="formatDoc('italic');" src="data:image/gif;base64,R0lGODlhFgAWAKEDAAAAAF9vj5WIbf///yH5BAEAAAMALAAAAAAWABYAAAIjnI+py+0Po5x0gXvruEKHrF2BB1YiCWgbMFIYpsbyTNd2UwAAOw==" />
        <img class="intLink" title="تسطير" onclick="formatDoc('underline');" src="data:image/gif;base64,R0lGODlhFgAWAKECAAAAAF9vj////////yH5BAEAAAIALAAAAAAWABYAAAIrlI+py+0Po5zUgAsEzvEeL4Ea15EiJJ5PSqJmuwKBEKgxVuXWtun+DwxCCgA7" />
        <img class="intLink" title="محاذاة إلى اليسار" onclick="formatDoc('justifyleft');" src="data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWABYAQAIghI+py+0Po5y02ouz3jL4D4JMGELkGYxo+qzl4nKyXAAAOw==" />
        <img class="intLink" title="محاذاة إلى الوسط" onclick="formatDoc('justifycenter');" src="data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWABYAQAIfhI+py+0Po5y02ouz3jL4D4JOGI7kaZ5Bqn4sycVbAQA7" />
        <img class="intLink" title="محاذاة إلى اليمين" onclick="formatDoc('justifyright');" src="data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWABYAQAIghI+py+0Po5y02ouz3jL4D4JQGDLkGYxouqzl43JyVgAAOw==" />
        <img class="intLink" title="الرجوع إلى الخلف" onclick="formatDoc('undo');" src="data:image/gif;base64,R0lGODlhFgAWAOMKADljwliE33mOrpGjuYKl8aezxqPD+7/I19DV3NHa7P///////////////////////yH5BAEKAA8ALAAAAAAWABYAAARR8MlJq7046807TkaYeJJBnES4EeUJvIGapWYAC0CsocQ7SDlWJkAkCA6ToMYWIARGQF3mRQVIEjkkSVLIbSfEwhdRIH4fh/DZMICe3/C4nBQBADs="
        />
        <img class="intLink" title="التقدم إلى الأمام" onclick="formatDoc('redo');" src="data:image/gif;base64,R0lGODlhFgAWAMIHAB1ChDljwl9vj1iE34Kl8aPD+7/I1////yH5BAEKAAcALAAAAAAWABYAAANKeLrc/jDKSesyphi7SiEgsVXZEATDICqBVJjpqWZt9NaEDNbQK1wCQsxlYnxMAImhyDoFAElJasRRvAZVRqqQXUy7Cgx4TC6bswkAOw=="
        />
        <img class="intLink" title="قائمة ذات تعداد رقمي" onclick="formatDoc('insertorderedlist');" src="data:image/gif;base64,R0lGODlhFgAWAMIGAAAAADljwliE35GjuaezxtHa7P///////yH5BAEAAAcALAAAAAAWABYAAAM2eLrc/jDKSespwjoRFvggCBUBoTFBeq6QIAysQnRHaEOzyaZ07Lu9lUBnC0UGQU1K52s6n5oEADs="
        />
        <img class="intLink" title="قائمة ذات تعداد نقطي" onclick="formatDoc('insertunorderedlist');" src="data:image/gif;base64,R0lGODlhFgAWAMIGAAAAAB1ChF9vj1iE33mOrqezxv///////yH5BAEAAAcALAAAAAAWABYAAAMyeLrc/jDKSesppNhGRlBAKIZRERBbqm6YtnbfMY7lud64UwiuKnigGQliQuWOyKQykgAAOw=="
        />
        <img class="intLink" title="إضافة رابط" onclick="var sLnk=prompt('Write the URL here','http:\/\/');if(sLnk&&sLnk!=''&&sLnk!='http://'){formatDoc('createlink',sLnk)}" src="data:image/gif;base64,R0lGODlhFgAWAOMKAB1ChDRLY19vj3mOrpGjuaezxrCztb/I19Ha7Pv8/f///////////////////////yH5BAEKAA8ALAAAAAAWABYAAARY8MlJq7046827/2BYIQVhHg9pEgVGIklyDEUBy/RlE4FQF4dCj2AQXAiJQDCWQCAEBwIioEMQBgSAFhDAGghGi9XgHAhMNoSZgJkJei33UESv2+/4vD4TAQA7"
        />
        <img class="intLink" title="القص" onclick="formatDoc('cut');" src="data:image/gif;base64,R0lGODlhFgAWAIQSAB1ChBFNsRJTySJYwjljwkxwl19vj1dusYODhl6MnHmOrpqbmpGjuaezxrCztcDCxL/I18rL1P///////////////////////////////////////////////////////yH5BAEAAB8ALAAAAAAWABYAAAVu4CeOZGmeaKqubDs6TNnEbGNApNG0kbGMi5trwcA9GArXh+FAfBAw5UexUDAQESkRsfhJPwaH4YsEGAAJGisRGAQY7UCC9ZAXBB+74LGCRxIEHwAHdWooDgGJcwpxDisQBQRjIgkDCVlfmZqbmiEAOw=="
        />
        <img class="intLink" title="النسخ" onclick="formatDoc('copy');" src="data:image/gif;base64,R0lGODlhFgAWAIQcAB1ChBFNsTRLYyJYwjljwl9vj1iE31iGzF6MnHWX9HOdz5GjuYCl2YKl8ZOt4qezxqK63aK/9KPD+7DI3b/I17LM/MrL1MLY9NHa7OPs++bx/Pv8/f///////////////yH5BAEAAB8ALAAAAAAWABYAAAWG4CeOZGmeaKqubOum1SQ/kPVOW749BeVSus2CgrCxHptLBbOQxCSNCCaF1GUqwQbBd0JGJAyGJJiobE+LnCaDcXAaEoxhQACgNw0FQx9kP+wmaRgYFBQNeAoGihCAJQsCkJAKOhgXEw8BLQYciooHf5o7EA+kC40qBKkAAAGrpy+wsbKzIiEAOw=="
        />
        <img class="intLink" title="اللصق" onclick="formatDoc('paste');" src="data:image/gif;base64,R0lGODlhFgAWAIQUAD04KTRLY2tXQF9vj414WZWIbXmOrpqbmpGjudClFaezxsa0cb/I1+3YitHa7PrkIPHvbuPs+/fvrvv8/f///////////////////////////////////////////////yH5BAEAAB8ALAAAAAAWABYAAAWN4CeOZGmeaKqubGsusPvBSyFJjVDs6nJLB0khR4AkBCmfsCGBQAoCwjF5gwquVykSFbwZE+AwIBV0GhFog2EwIDchjwRiQo9E2Fx4XD5R+B0DDAEnBXBhBhN2DgwDAQFjJYVhCQYRfgoIDGiQJAWTCQMRiwwMfgicnVcAAAMOaK+bLAOrtLUyt7i5uiUhADs="
        />
        <img class="intLink" title="المسح التام" onclick="if(validateMode()&&confirm('Are you sure?')){oDoc.innerHTML=sDefTxt};" src="data:image/gif;base64,R0lGODlhFgAWAIQbAD04KTRLYzFRjlldZl9vj1dusY14WYODhpWIbbSVFY6O7IOXw5qbms+wUbCztca0ccS4kdDQjdTLtMrL1O3YitHa7OPcsd/f4PfvrvDv8Pv5xv///////////////////yH5BAEKAB8ALAAAAAAWABYAAAV84CeOZGmeaKqubMteyzK547QoBcFWTm/jgsHq4rhMLoxFIehQQSAWR+Z4IAyaJ0kEgtFoLIzLwRE4oCQWrxoTOTAIhMCZ0tVgMBQKZHAYyFEWEV14eQ8IflhnEHmFDQkAiSkQCI2PDC4QBg+OAJc0ewadNCOgo6anqKkoIQA7"
        />

      </div>
      <iframe id="inlineFrameExample" name="inlineFrameExample" title="Inline Frame Example" width="0" height="0" dir="rtl" hidden="hidden">
  </iframe>
      <div id="textBox" contenteditable="true">


        <div style="text-align: center;"><img src="https://i.imgur.com/KDXSnOv.jpg" width="160"></div><strong style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: &quot;Open Sans&quot;, Arial, sans-serif; text-align: justify; background-color: rgb(255, 255, 255);">Lorem Ipsum</strong>
        <span style="color: rgb(0, 0, 0); font-family: &quot;Open Sans&quot;, Arial, sans-serif; text-align: justify; background-color: rgb(255, 255, 255);">&nbsp;is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It
          has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with
          desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</span>
      </div>

      <p id="editMode"><input type="checkbox" name="switchMode" id="switchBox" onchange="setDocMode(this.checked);" hidden="hidden" /> </p>
      <p><input type="submit" value="Send" hidden="hidden" /></p>

希望对您有所帮助，如果您有任何问题，请在下方留言，我会尽快回复您。

编码愉快!