From 98eb2f85d8913d36733467eedea0f1dce9ed50df Mon Sep 17 00:00:00 2001
From: Arvind Tiwari <tiwariav@gmail.com>
Date: Thu, 21 Sep 2017 01:19:38 +0530
Subject: [PATCH] printing pdf

---
 hosting/static/hosting/css/order.css        |  16 +
 hosting/static/hosting/js/html2pdf.js       | 387 ++++++++++++++++++++
 hosting/templates/hosting/order_detail.html |  27 +-
 3 files changed, 421 insertions(+), 9 deletions(-)
 create mode 100644 hosting/static/hosting/js/html2pdf.js

diff --git a/hosting/static/hosting/css/order.css b/hosting/static/hosting/css/order.css
index bdd124c9..3e916cdd 100644
--- a/hosting/static/hosting/css/order.css
+++ b/hosting/static/hosting/css/order.css
@@ -20,3 +20,19 @@
 .order-detail-container .table > tbody > tr > .thick-line {
     border-top: 2px solid;
 }
+
+.order-detail-container .dashboard-title-thin {
+    margin-top: 0;
+}
+
+.order-detail-container .dashboard-title-thin .un-icon {
+    margin-top: -6px;
+}
+
+.order-detail-container .dashboard-title-thin .svg-img {
+    height: 20px;
+    margin-right: 5px;
+    margin-top: -2px;
+    width: 20px;
+    margin-top: -6px;
+}
\ No newline at end of file
diff --git a/hosting/static/hosting/js/html2pdf.js b/hosting/static/hosting/js/html2pdf.js
new file mode 100644
index 00000000..45ae5b0c
--- /dev/null
+++ b/hosting/static/hosting/js/html2pdf.js
@@ -0,0 +1,387 @@
+/**
+ * @license
+ *
+ * MIT License
+ *
+ * Copyright (c) 2017 Erik Koopmans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/**
+ * Generate a PDF from an HTML element or string using html2canvas and jsPDF.
+ *
+ * @param {Element|string} source The source element or HTML string.
+ * @param {Object=} opt An object of optional settings: 'margin', 'filename',
+ *    'image' ('type' and 'quality'), and 'html2canvas' / 'jspdf', which are
+ *    sent as settings to their corresponding functions.
+ */
+var html2pdf = (function(html2canvas, jsPDF) {
+
+  /* ---------- MAIN FUNCTION ---------- */
+
+  var html2pdf = function(source, opt) {
+    // Handle input.
+    opt = objType(opt) === 'object' ? opt : {};
+    var source = html2pdf.parseInput(source, opt);
+
+    // Determine the PDF page size.
+    var pageSize = jsPDF.getPageSize(opt.jsPDF);
+    pageSize.inner = {
+      width:  pageSize.width - opt.margin[1] - opt.margin[3],
+      height: pageSize.height - opt.margin[0] - opt.margin[2]
+    };
+    pageSize.inner.ratio = pageSize.inner.height / pageSize.inner.width;
+
+    // Copy the source element into a PDF-styled container div.
+    var container = html2pdf.makeContainer(source, pageSize);
+    var overlay = container.parentElement;
+
+    // Get the locations of all hyperlinks.
+    if (opt.enableLinks) {
+      // Find all anchor tags and get the container's bounds for reference.
+      opt.links = [];
+      var links = container.querySelectorAll('a');
+      var containerRect = unitConvert(container.getBoundingClientRect(), pageSize.k);
+
+      // Treat each client rect as a separate link (for text-wrapping).
+      Array.prototype.forEach.call(links, function(link) {
+        var clientRects = link.getClientRects();
+        for (var i=0; i<clientRects.length; i++) {
+          var clientRect = unitConvert(clientRects[i], pageSize.k);
+          clientRect.left -= containerRect.left;
+          clientRect.top -= containerRect.top;
+          opt.links.push({ el: link, clientRect: clientRect });
+        }
+      });
+    }
+
+    // Render the canvas and pass the result to makePDF.
+    var onRendered = opt.html2canvas.onrendered || function() {};
+    opt.html2canvas.onrendered = function(canvas) {
+      onRendered(canvas);
+      document.body.removeChild(overlay);
+      html2pdf.makePDF(canvas, pageSize, opt);
+    }
+    html2canvas(container, opt.html2canvas);
+  };
+
+  html2pdf.parseInput = function(source, opt) {
+    // Parse the opt object.
+    opt.jsPDF = opt.jsPDF || {};
+    opt.html2canvas = opt.html2canvas || {};
+    opt.filename = opt.filename && objType(opt.filename) === 'string' ? opt.filename : 'file.pdf';
+    opt.enableLinks = opt.hasOwnProperty('enableLinks') ? opt.enableLinks : true;
+    opt.image = opt.image || {};
+    opt.image.type = opt.image.type || 'jpeg';
+    opt.image.quality = opt.image.quality || 0.95;
+
+    // Parse the margin property of the opt object.
+    switch (objType(opt.margin)) {
+      case 'undefined':
+        opt.margin = 0;
+      case 'number':
+        opt.margin = [opt.margin, opt.margin, opt.margin, opt.margin];
+        break;
+      case 'array':
+        if (opt.margin.length === 2) {
+          opt.margin = [opt.margin[0], opt.margin[1], opt.margin[0], opt.margin[1]];
+        }
+        if (opt.margin.length === 4) {
+          break;
+        }
+      default:
+        throw 'Invalid margin array.';
+    }
+
+    // Parse the source element/string.
+    if (!source) {
+      throw 'Missing source element or string.';
+    } else if (objType(source) === 'string') {
+      source = createElement('div', { innerHTML: source });
+    } else if (objType(source) === 'element') {
+      source = cloneNode(source, opt.html2canvas.javascriptEnabled);
+    } else {
+      throw 'Invalid source - please specify an HTML Element or string.';
+    }
+
+    // Return the parsed input (opt is modified in-place, no need to return).
+    return source;
+  };
+
+  html2pdf.makeContainer = function(source, pageSize) {
+    // Define the CSS styles for the container and its overlay parent.
+    var overlayCSS = {
+      position: 'fixed', overflow: 'hidden', zIndex: 1000,
+      left: 0, right: 0, bottom: 0, top: 0,
+      backgroundColor: 'rgba(0,0,0,0.8)'
+    };
+    var containerCSS = {
+      position: 'absolute', width: pageSize.inner.width + pageSize.unit,
+      left: 0, right: 0, top: 0, height: 'auto', margin: 'auto',
+      backgroundColor: 'white'
+    };
+
+    // Set the overlay to hidden (could be changed in the future to provide a print preview).
+    overlayCSS.opacity = 0;
+
+    // Create and attach the elements.
+    var overlay = createElement('div',   { className: 'html2pdf__overlay', style: overlayCSS });
+    var container = createElement('div', { className: 'html2pdf__container', style: containerCSS });
+    container.appendChild(source);
+    overlay.appendChild(container);
+    document.body.appendChild(overlay);
+
+    // Enable page-breaks.
+    var pageBreaks = source.querySelectorAll('.html2pdf__page-break');
+    var pxPageHeight = pageSize.inner.height * pageSize.k / 72 * 96;
+    Array.prototype.forEach.call(pageBreaks, function(el) {
+      el.style.display = 'block';
+      var clientRect = el.getBoundingClientRect();
+      el.style.height = pxPageHeight - (clientRect.top % pxPageHeight) + 'px';
+    }, this);
+
+    // Return the container.
+    return container;
+  };
+
+  html2pdf.makePDF = function(canvas, pageSize, opt) {
+    // Calculate the number of pages.
+    var ctx = canvas.getContext('2d');
+    var pxFullHeight = canvas.height;
+    var pxPageHeight = Math.floor(canvas.width * pageSize.inner.ratio);
+    var nPages = Math.ceil(pxFullHeight / pxPageHeight);
+
+    // Create a one-page canvas to split up the full image.
+    var pageCanvas = document.createElement('canvas');
+    var pageCtx = pageCanvas.getContext('2d');
+    var pageHeight = pageSize.inner.height;
+    pageCanvas.width = canvas.width;
+    pageCanvas.height = pxPageHeight;
+
+    // Initialize the PDF.
+    var pdf = new jsPDF(opt.jsPDF);
+
+    for (var page=0; page<nPages; page++) {
+      // Trim the final page to reduce file size.
+      if (page === nPages-1) {
+        pageCanvas.height = pxFullHeight % pxPageHeight;
+        pageHeight = pageCanvas.height * pageSize.inner.width / pageCanvas.width;
+      }
+
+      // Display the page.
+      var w = pageCanvas.width;
+      var h = pageCanvas.height;
+      pageCtx.fillStyle = 'white';
+      pageCtx.fillRect(0, 0, w, h);
+      pageCtx.drawImage(canvas, 0, page*pxPageHeight, w, h, 0, 0, w, h);
+
+      // Add the page to the PDF.
+      if (page)  pdf.addPage();
+      var imgData = pageCanvas.toDataURL('image/' + opt.image.type, opt.image.quality);
+      pdf.addImage(imgData, opt.image.type, opt.margin[1], opt.margin[0],
+                   pageSize.inner.width, pageHeight);
+
+      // Add hyperlinks.
+      if (opt.enableLinks) {
+        var pageTop = page * pageSize.inner.height;
+        opt.links.forEach(function(link) {
+          if (link.clientRect.top > pageTop && link.clientRect.top < pageTop + pageSize.inner.height) {
+            var left = opt.margin[1] + link.clientRect.left;
+            var top = opt.margin[0] + link.clientRect.top - pageTop;
+            pdf.link(left, top, link.clientRect.width, link.clientRect.height, { url: link.el.href });
+          }
+        });
+      }
+    }
+
+    // Finish the PDF.
+    pdf.save( opt.filename );
+  }
+
+
+  /* ---------- UTILS ---------- */
+
+  // Determine the type of a variable/object.
+  var objType = function(obj) {
+    if (typeof obj === 'undefined')                             return 'undefined';
+    else if (typeof obj === 'string' || obj instanceof String)  return 'string';
+    else if (typeof obj === 'number' || obj instanceof Number)  return 'number';
+    else if (!!obj && obj.constructor === Array)                return 'array';
+    else if (obj && obj.nodeType === 1)                         return 'element';
+    else if (typeof obj === 'object')                           return 'object';
+    else                                                        return 'unknown';
+  };
+
+  // Create an HTML element with optional className, innerHTML, and style.
+  var createElement = function(tagName, opt) {
+    var el = document.createElement(tagName);
+    if (opt.className)  el.className = opt.className;
+    if (opt.innerHTML) {
+      el.innerHTML = opt.innerHTML;
+      var scripts = el.getElementsByTagName('script');
+      for (var i = scripts.length; i-- > 0; null) {
+        scripts[i].parentNode.removeChild(scripts[i]);
+      }
+    }
+    for (var key in opt.style) {
+      el.style[key] = opt.style[key];
+    }
+    return el;
+  };
+
+  // Deep-clone a node and preserve contents/properties.
+  var cloneNode = function(node, javascriptEnabled) {
+    // Recursively clone the node.
+    var clone = node.nodeType === 3 ? document.createTextNode(node.nodeValue) : node.cloneNode(false);
+    for (var child = node.firstChild; child; child = child.nextSibling) {
+      if (javascriptEnabled === true || child.nodeType !== 1 || child.nodeName !== 'SCRIPT') {
+        clone.appendChild(cloneNode(child, javascriptEnabled));
+      }
+    }
+
+    if (node.nodeType === 1) {
+      // Preserve contents/properties of special nodes.
+      if (node.nodeName === 'CANVAS') {
+        clone.width = node.width;
+        clone.height = node.height;
+        clone.getContext('2d').drawImage(node, 0, 0);
+      } else if (node.nodeName === 'TEXTAREA' || node.nodeName === 'SELECT') {
+        clone.value = node.value;
+      }
+
+      // Preserve the node's scroll position when it loads.
+      clone.addEventListener('load', function() {
+        clone.scrollTop = node.scrollTop;
+        clone.scrollLeft = node.scrollLeft;
+      }, true);
+    }
+
+    // Return the cloned node.
+    return clone;
+  }
+
+  // Convert units using the conversion value 'k' from jsPDF.
+  var unitConvert = function(obj, k) {
+    var newObj = {};
+    for (var key in obj) {
+      newObj[key] = obj[key] * 72 / 96 / k;
+    }
+    return newObj;
+  };
+
+  // Get dimensions of a PDF page, as determined by jsPDF.
+  jsPDF.getPageSize = function(orientation, unit, format) {
+    // Decode options object
+    if (typeof orientation === 'object') {
+      var options = orientation;
+      orientation = options.orientation;
+      unit = options.unit || unit;
+      format = options.format || format;
+    }
+
+    // Default options
+    unit        = unit || 'mm';
+    format      = format || 'a4';
+    orientation = ('' + (orientation || 'P')).toLowerCase();
+    var format_as_string = ('' + format).toLowerCase();
+
+    // Size in pt of various paper formats
+    pageFormats = {
+      'a0'  : [2383.94, 3370.39], 'a1'  : [1683.78, 2383.94],
+      'a2'  : [1190.55, 1683.78], 'a3'  : [ 841.89, 1190.55],
+      'a4'  : [ 595.28,  841.89], 'a5'  : [ 419.53,  595.28],
+      'a6'  : [ 297.64,  419.53], 'a7'  : [ 209.76,  297.64],
+      'a8'  : [ 147.40,  209.76], 'a9'  : [ 104.88,  147.40],
+      'a10' : [  73.70,  104.88], 'b0'  : [2834.65, 4008.19],
+      'b1'  : [2004.09, 2834.65], 'b2'  : [1417.32, 2004.09],
+      'b3'  : [1000.63, 1417.32], 'b4'  : [ 708.66, 1000.63],
+      'b5'  : [ 498.90,  708.66], 'b6'  : [ 354.33,  498.90],
+      'b7'  : [ 249.45,  354.33], 'b8'  : [ 175.75,  249.45],
+      'b9'  : [ 124.72,  175.75], 'b10' : [  87.87,  124.72],
+      'c0'  : [2599.37, 3676.54], 'c1'  : [1836.85, 2599.37],
+      'c2'  : [1298.27, 1836.85], 'c3'  : [ 918.43, 1298.27],
+      'c4'  : [ 649.13,  918.43], 'c5'  : [ 459.21,  649.13],
+      'c6'  : [ 323.15,  459.21], 'c7'  : [ 229.61,  323.15],
+      'c8'  : [ 161.57,  229.61], 'c9'  : [ 113.39,  161.57],
+      'c10' : [  79.37,  113.39], 'dl'  : [ 311.81,  623.62],
+      'letter'            : [612,   792],
+      'government-letter' : [576,   756],
+      'legal'             : [612,  1008],
+      'junior-legal'      : [576,   360],
+      'ledger'            : [1224,  792],
+      'tabloid'           : [792,  1224],
+      'credit-card'       : [153,   243]
+    };
+
+    // Unit conversion
+    switch (unit) {
+      case 'pt':  k = 1;          break;
+      case 'mm':  k = 72 / 25.4;  break;
+      case 'cm':  k = 72 / 2.54;  break;
+      case 'in':  k = 72;         break;
+      case 'px':  k = 72 / 96;    break;
+      case 'pc':  k = 12;         break;
+      case 'em':  k = 12;         break;
+      case 'ex':  k = 6;          break;
+      default:
+        throw ('Invalid unit: ' + unit);
+    }
+
+    // Dimensions are stored as user units and converted to points on output
+    if (pageFormats.hasOwnProperty(format_as_string)) {
+      pageHeight = pageFormats[format_as_string][1] / k;
+      pageWidth = pageFormats[format_as_string][0] / k;
+    } else {
+      try {
+        pageHeight = format[1];
+        pageWidth = format[0];
+      } catch (err) {
+        throw new Error('Invalid format: ' + format);
+      }
+    }
+
+    // Handle page orientation
+    if (orientation === 'p' || orientation === 'portrait') {
+      orientation = 'p';
+      if (pageWidth > pageHeight) {
+        tmp = pageWidth;
+        pageWidth = pageHeight;
+        pageHeight = tmp;
+      }
+    } else if (orientation === 'l' || orientation === 'landscape') {
+      orientation = 'l';
+      if (pageHeight > pageWidth) {
+        tmp = pageWidth;
+        pageWidth = pageHeight;
+        pageHeight = tmp;
+      }
+    } else {
+      throw('Invalid orientation: ' + orientation);
+    }
+
+    // Return information (k is the unit conversion ratio from pts)
+    var info = { 'width': pageWidth, 'height': pageHeight, 'unit': unit, 'k': k };
+    return info;
+  };
+
+
+  // Expose the html2pdf function.
+  return html2pdf;
+}(html2canvas, jsPDF));
diff --git a/hosting/templates/hosting/order_detail.html b/hosting/templates/hosting/order_detail.html
index 3d1ffd35..8278db45 100644
--- a/hosting/templates/hosting/order_detail.html
+++ b/hosting/templates/hosting/order_detail.html
@@ -5,7 +5,7 @@
 
 {% block content %}
 
-<div class="order-detail-container">
+<div id="order-detail" class="order-detail-container">
     {% if messages %}
         <div class="alert alert-warning">
             {% for message in messages %}
@@ -14,17 +14,20 @@
         </div>
     {% endif %}
     {% if not error %}
-        <h1 class="dashboard-title-thin">
-            {% blocktrans %}{{page_header_text|default:'Invoice'}}{% endblocktrans %}
-        </h1>
+        <div class="dashboard-container-head">
+            <h1 class="dashboard-title-thin">
+                <img src="{% static 'hosting/img/billing.svg' %}" class="un-icon">{% blocktrans with page_header_text=page_header_text|default:"Invoice" %}{{page_header_text}}{% endblocktrans %}
+            </h1>
+
+            <button></button>
+                <img src="{% static 'hosting/img/icon-pdf.svg' %}" class="svg-img pull-right">
+                <img src="{% static 'hosting/img/icon-print.svg' %}" class="svg-img pull-right">
+        </div>
         <div class="invoice-title">
-            <h3 class="pull-right">
-                {% if order %}
-                    {% trans "Order #"%} {{order.id}}
-                {% endif %}
+            <h3>
+                {% trans "Order #"%} {{order.id}}
             </h3>
         </div>
-        <hr>
         <div class="row">
             <div class="col-xs-12 col-md-6 pull-right order-confirm-date">
                 <address>
@@ -202,5 +205,11 @@
     };
 
 </script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.5/jspdf.min.js"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.min.js"></script>
+<script src="{% static 'hosting/js/html2pdf.js' %}"></script>
+<script>
+    html2pdf(document.getElementById('order-detail'));
+</script>
 {%endblock%}