@digivorefr/html2pdf.js
Version:
Client-side HTML-to-PDF rendering using pure JS with html2canvas-pro
1,158 lines (930 loc) • 233 kB
JavaScript
/*!
* @digivorefr/html2pdf.js v0.11.1
* Copyright (c) 2025 Erik Koopmans
* Released under the MIT License.
*/
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory(require("jspdf"), require("html2canvas-pro"));
else if(typeof define === 'function' && define.amd)
define("html2pdf", ["jspdf", "html2canvas-pro"], factory);
else if(typeof exports === 'object')
exports["html2pdf"] = factory(require("jspdf"), require("html2canvas-pro"));
else
root["html2pdf"] = factory(root["jspdf"], root["html2canvas-pro"]);
})(self, function(__WEBPACK_EXTERNAL_MODULE_jspdf__, __WEBPACK_EXTERNAL_MODULE_html2canvas_pro__) {
return /******/ (function() { // webpackBootstrap
/******/ var __webpack_modules__ = ({
/***/ "./src/plugin/hyperlinks.js":
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/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var core_js_modules_web_dom_collections_for_each_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! core-js/modules/web.dom-collections.for-each.js */ "./node_modules/core-js/modules/web.dom-collections.for-each.js");
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/* harmony import */ var _worker_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../worker.js */ "./src/worker.js");
/* harmony import */ var _utils_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ../utils.js */ "./src/utils.js");
// Add hyperlink functionality to the PDF creation.
// Main link array, and refs to original functions.
var linkInfo = [];
var orig = {
toContainer: _worker_js__WEBPACK_IMPORTED_MODULE_2__.default.prototype.toContainer,
toPdf: _worker_js__WEBPACK_IMPORTED_MODULE_2__.default.prototype.toPdf
};
_worker_js__WEBPACK_IMPORTED_MODULE_2__.default.prototype.toContainer = function toContainer() {
return orig.toContainer.call(this).then(function toContainer_hyperlink() {
// Retrieve hyperlink info if the option is enabled.
if (this.opt.enableLinks) {
// Find all anchor tags and get the container's bounds for reference.
var container = this.prop.container;
var links = container.querySelectorAll('a');
var containerRect = (0,_utils_js__WEBPACK_IMPORTED_MODULE_3__.unitConvert)(container.getBoundingClientRect(), this.prop.pageSize.k);
linkInfo = []; // Loop through each anchor tag.
Array.prototype.forEach.call(links, function (link) {
// Treat each client rect as a separate link (for text-wrapping).
var clientRects = link.getClientRects();
for (var i = 0; i < clientRects.length; i++) {
var clientRect = (0,_utils_js__WEBPACK_IMPORTED_MODULE_3__.unitConvert)(clientRects[i], this.prop.pageSize.k);
clientRect.left -= containerRect.left;
clientRect.top -= containerRect.top;
var page = Math.floor(clientRect.top / this.prop.pageSize.inner.height) + 1;
var top = this.opt.margin[0] + clientRect.top % this.prop.pageSize.inner.height;
var left = this.opt.margin[1] + clientRect.left;
linkInfo.push({
page: page,
top: top,
left: left,
clientRect: clientRect,
link: link
});
}
}, this);
}
});
};
_worker_js__WEBPACK_IMPORTED_MODULE_2__.default.prototype.toPdf = function toPdf() {
return orig.toPdf.call(this).then(function toPdf_hyperlink() {
// Add hyperlinks if the option is enabled.
if (this.opt.enableLinks) {
// Attach each anchor tag based on info from toContainer().
linkInfo.forEach(function (l) {
this.prop.pdf.setPage(l.page);
this.prop.pdf.link(l.left, l.top, l.clientRect.width, l.clientRect.height, {
url: l.link.href
});
}, this); // Reset the active page of the PDF to the final page.
var nPages = this.prop.pdf.internal.getNumberOfPages();
this.prop.pdf.setPage(nPages);
}
});
};
/***/ }),
/***/ "./src/plugin/jspdf-plugin.js":
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/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {
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__webpack_require__.r(__webpack_exports__);
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/* harmony import */ var jspdf__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! jspdf */ "jspdf");
/* harmony import */ var jspdf__WEBPACK_IMPORTED_MODULE_7___default = /*#__PURE__*/__webpack_require__.n(jspdf__WEBPACK_IMPORTED_MODULE_7__);
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
// Import dependencies.
// Get dimensions of a PDF page, as determined by jsPDF.
jspdf__WEBPACK_IMPORTED_MODULE_7__.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
var 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':
var k = 1;
break;
case 'mm':
var k = 72 / 25.4;
break;
case 'cm':
var k = 72 / 2.54;
break;
case 'in':
var k = 72;
break;
case 'px':
var k = 72 / 96;
break;
case 'pc':
var k = 12;
break;
case 'em':
var k = 12;
break;
case 'ex':
var 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)) {
var pageHeight = pageFormats[format_as_string][1] / k;
var pageWidth = pageFormats[format_as_string][0] / k;
} else {
try {
var pageHeight = format[1];
var pageWidth = format[0];
} catch (err) {
throw new Error('Invalid format: ' + format);
}
} // Handle page orientation
if (orientation === 'p' || orientation === 'portrait') {
orientation = 'p';
if (pageWidth > pageHeight) {
var tmp = pageWidth;
pageWidth = pageHeight;
pageHeight = tmp;
}
} else if (orientation === 'l' || orientation === 'landscape') {
orientation = 'l';
if (pageHeight > pageWidth) {
var 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;
};
/* harmony default export */ __webpack_exports__["default"] = (jspdf__WEBPACK_IMPORTED_MODULE_7__.jsPDF);
/***/ }),
/***/ "./src/plugin/pagebreaks.js":
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/* harmony import */ var _utils_js__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! ../utils.js */ "./src/utils.js");
/* Pagebreak plugin:
Adds page-break functionality to the html2pdf library. Page-breaks can be
enabled by CSS styles, set on individual elements using selectors, or
avoided from breaking inside all elements.
Options on the `opt.pagebreak` object:
mode: String or array of strings: 'avoid-all', 'css', and/or 'legacy'
Default: ['css', 'legacy']
before: String or array of CSS selectors for which to add page-breaks
before each element. Can be a specific element with an ID
('#myID'), all elements of a type (e.g. 'img'), all of a class
('.myClass'), or even '*' to match every element.
after: Like 'before', but adds a page-break immediately after the element.
avoid: Like 'before', but avoids page-breaks on these elements. You can
enable this feature on every element using the 'avoid-all' mode.
*/
// Refs to original functions.
var orig = {
toContainer: _worker_js__WEBPACK_IMPORTED_MODULE_5__.default.prototype.toContainer
}; // Add pagebreak default options to the Worker template.
_worker_js__WEBPACK_IMPORTED_MODULE_5__.default.template.opt.pagebreak = {
mode: ['css', 'legacy'],
before: [],
after: [],
avoid: []
};
_worker_js__WEBPACK_IMPORTED_MODULE_5__.default.prototype.toContainer = function toContainer() {
return orig.toContainer.call(this).then(function toContainer_pagebreak() {
// Setup root element and inner page height.
var root = this.prop.container;
var pxPageHeight = this.prop.pageSize.inner.px.height; // Check all requested modes.
var modeSrc = [].concat(this.opt.pagebreak.mode);
var mode = {
avoidAll: modeSrc.indexOf('avoid-all') !== -1,
css: modeSrc.indexOf('css') !== -1,
legacy: modeSrc.indexOf('legacy') !== -1
}; // Get arrays of all explicitly requested elements.
var select = {};
var self = this;
['before', 'after', 'avoid'].forEach(function (key) {
var all = mode.avoidAll && key === 'avoid';
select[key] = all ? [] : [].concat(self.opt.pagebreak[key] || []);
if (select[key].length > 0) {
select[key] = Array.prototype.slice.call(root.querySelectorAll(select[key].join(', ')));
}
}); // Get all legacy page-break elements.
var legacyEls = root.querySelectorAll('.html2pdf__page-break');
legacyEls = Array.prototype.slice.call(legacyEls); // Loop through all elements.
var els = root.querySelectorAll('*');
Array.prototype.forEach.call(els, function pagebreak_loop(el) {
// Setup pagebreak rules based on legacy and avoidAll modes.
var rules = {
before: false,
after: mode.legacy && legacyEls.indexOf(el) !== -1,
avoid: mode.avoidAll
}; // Add rules for css mode.
if (mode.css) {
// TODO: Check if this is valid with iFrames.
var style = window.getComputedStyle(el); // TODO: Handle 'left' and 'right' correctly.
// TODO: Add support for 'avoid' on breakBefore/After.
var breakOpt = ['always', 'page', 'left', 'right'];
var avoidOpt = ['avoid', 'avoid-page'];
rules = {
before: rules.before || breakOpt.indexOf(style.breakBefore || style.pageBreakBefore) !== -1,
after: rules.after || breakOpt.indexOf(style.breakAfter || style.pageBreakAfter) !== -1,
avoid: rules.avoid || avoidOpt.indexOf(style.breakInside || style.pageBreakInside) !== -1
};
} // Add rules for explicit requests.
Object.keys(rules).forEach(function (key) {
rules[key] = rules[key] || select[key].indexOf(el) !== -1;
}); // Get element position on the screen.
// TODO: Subtract the top of the container from clientRect.top/bottom?
var clientRect = el.getBoundingClientRect(); // Avoid: Check if a break happens mid-element.
if (rules.avoid && !rules.before) {
var startPage = Math.floor(clientRect.top / pxPageHeight);
var endPage = Math.floor(clientRect.bottom / pxPageHeight);
var nPages = Math.abs(clientRect.bottom - clientRect.top) / pxPageHeight; // Turn on rules.before if the el is broken and is at most one page long.
if (endPage !== startPage && nPages <= 1) {
rules.before = true;
}
} // Before: Create a padding div to push the element to the next page.
if (rules.before) {
var pad = (0,_utils_js__WEBPACK_IMPORTED_MODULE_6__.createElement)('div', {
style: {
display: 'block',
height: pxPageHeight - clientRect.top % pxPageHeight + 'px'
}
});
el.parentNode.insertBefore(pad, el);
} // After: Create a padding div to fill the remaining page.
if (rules.after) {
var pad = (0,_utils_js__WEBPACK_IMPORTED_MODULE_6__.createElement)('div', {
style: {
display: 'block',
height: pxPageHeight - clientRect.bottom % pxPageHeight + 'px'
}
});
el.parentNode.insertBefore(pad, el.nextSibling);
}
});
});
};
/***/ }),
/***/ "./src/utils.js":
/*!**********************!*\
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/* harmony export */ "unitConvert": function() { return /* binding */ unitConvert; },
/* harmony export */ "toPx": function() { return /* binding */ toPx; }
/* harmony export */ });
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function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
// Determine the type of a variable/object.
var objType = function objType(obj) {
var type = _typeof(obj);
if (type === 'undefined') return 'undefined';else if (type === 'string' || obj instanceof String) return 'string';else if (type === 'number' || obj instanceof Number) return 'number';else if (type === 'function' || obj instanceof Function) return 'function';else if (!!obj && obj.constructor === Array) return 'array';else if (obj && obj.nodeType === 1) return 'element';else if (type === 'object') return 'object';else return 'unknown';
}; // Create an HTML element with optional className, innerHTML, and style.
var createElement = function createElement(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 cloneNode(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 from px using the conversion value 'k' from jsPDF.
var unitConvert = function unitConvert(obj, k) {
if (objType(obj) === 'number') {
return obj * 72 / 96 / k;
} else {
var newObj = {};
for (var key in obj) {
newObj[key] = obj[key] * 72 / 96 / k;
}
return newObj;
}
}; // Convert units to px using the conversion value 'k' from jsPDF.
var toPx = function toPx(val, k) {
return Math.floor(val * k / 72 * 96);
};
/***/ }),
/***/ "./src/worker.js":
/*!***********************!*\
!*** ./src/worker.js ***!
\***********************/
/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var core_js_modules_es_object_assign_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! core-js/modules/es.object.assign.js */ "./node_modules/core-js/modules/es.object.assign.js");
/* harmony import */ var core_js_modules_es_object_assign_js__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_object_assign_js__WEBPACK_IMPORTED_MODULE_0__);
/* harmony import */ var core_js_modules_es_array_map_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! core-js/modules/es.array.map.js */ "./node_modules/core-js/modules/es.array.map.js");
/* harmony import */ var core_js_modules_es_array_map_js__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_array_map_js__WEBPACK_IMPORTED_MODULE_1__);
/* harmony import */ var core_js_modules_es_object_keys_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! core-js/modules/es.object.keys.js */ "./node_modules/core-js/modules/es.object.keys.js");
/* harmony import */ var core_js_modules_es_object_keys_js__WEBPACK_IMPORTED_MODULE_2___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_object_keys_js__WEBPACK_IMPORTED_MODULE_2__);
/* harmony import */ var core_js_modules_es_array_concat_js__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! core-js/modules/es.array.concat.js */ "./node_modules/core-js/modules/es.array.concat.js");
/* harmony import */ var core_js_modules_es_array_concat_js__WEBPACK_IMPORTED_MODULE_3___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_array_concat_js__WEBPACK_IMPORTED_MODULE_3__);
/* harmony import */ var core_js_modules_es_object_to_string_js__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! core-js/modules/es.object.to-string.js */ "./node_modules/core-js/modules/es.object.to-string.js");
/* harmony import */ var core_js_modules_es_object_to_string_js__WEBPACK_IMPORTED_MODULE_4___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_object_to_string_js__WEBPACK_IMPORTED_MODULE_4__);
/* harmony import */ var core_js_modules_es_regexp_to_string_js__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! core-js/modules/es.regexp.to-string.js */ "./node_modules/core-js/modules/es.regexp.to-string.js");
/* harmony import */ var core_js_modules_es_regexp_to_string_js__WEBPACK_IMPORTED_MODULE_5___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_regexp_to_string_js__WEBPACK_IMPORTED_MODULE_5__);
/* harmony import */ var core_js_modules_es_function_name_js__WEBPACK_IMPORTED_MODULE_6__ = __webpack_require__(/*! core-js/modules/es.function.name.js */ "./node_modules/core-js/modules/es.function.name.js");
/* harmony import */ var core_js_modules_es_function_name_js__WEBPACK_IMPORTED_MODULE_6___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_es_function_name_js__WEBPACK_IMPORTED_MODULE_6__);
/* harmony import */ var core_js_modules_web_dom_collections_for_each_js__WEBPACK_IMPORTED_MODULE_7__ = __webpack_require__(/*! core-js/modules/web.dom-collections.for-each.js */ "./node_modules/core-js/modules/web.dom-collections.for-each.js");
/* harmony import */ var core_js_modules_web_dom_collections_for_each_js__WEBPACK_IMPORTED_MODULE_7___default = /*#__PURE__*/__webpack_require__.n(core_js_modules_web_dom_collections_for_each_js__WEBPACK_IMPORTED_MODULE_7__);
/* harmony import */ var jspdf__WEBPACK_IMPORTED_MODULE_8__ = __webpack_require__(/*! jspdf */ "jspdf");
/* harmony import */ var jspdf__WEBPACK_IMPORTED_MODULE_8___default = /*#__PURE__*/__webpack_require__.n(jspdf__WEBPACK_IMPORTED_MODULE_8__);
/* harmony import */ var html2canvas_pro__WEBPACK_IMPORTED_MODULE_9__ = __webpack_require__(/*! html2canvas-pro */ "html2canvas-pro");
/* harmony import */ var html2canvas_pro__WEBPACK_IMPORTED_MODULE_9___default = /*#__PURE__*/__webpack_require__.n(html2canvas_pro__WEBPACK_IMPORTED_MODULE_9__);
/* harmony import */ var _utils_js__WEBPACK_IMPORTED_MODULE_10__ = __webpack_require__(/*! ./utils.js */ "./src/utils.js");
/* harmony import */ var es6_promise__WEBPACK_IMPORTED_MODULE_11__ = __webpack_require__(/*! es6-promise */ "./node_modules/es6-promise/dist/es6-promise.js");
/* harmony import */ var es6_promise__WEBPACK_IMPORTED_MODULE_11___default = /*#__PURE__*/__webpack_require__.n(es6_promise__WEBPACK_IMPORTED_MODULE_11__);
var Promise = (es6_promise__WEBPACK_IMPORTED_MODULE_11___default().Promise);
/* ----- CONSTRUCTOR ----- */
var Worker = function Worker(opt) {
// Create the root parent for the proto chain, and the starting Worker.
var root = Object.assign(Worker.convert(Promise.resolve()), JSON.parse(JSON.stringify(Worker.template)));
var self = Worker.convert(Promise.resolve(), root); // Set progress, optional settings, and return.
self = self.setProgress(1, Worker, 1, [Worker]);
self = self.set(opt);
return self;
}; // Boilerplate for subclassing Promise.
Worker.prototype = Object.create(Promise.prototype);
Worker.prototype.constructor = Worker; // Converts/casts promises into Workers.
Worker.convert = function convert(promise, inherit) {
// Uses prototypal inheritance to receive changes made to ancestors' properties.
promise.__proto__ = inherit || Worker.prototype;
return promise;
};
Worker.template = {
prop: {
src: null,
container: null,
overlay: null,
canvas: null,
img: null,
pdf: null,
pageSize: null
},
progress: {
val: 0,
state: null,
n: 0,
stack: []
},
opt: {
filename: 'file.pdf',
margin: [0, 0, 0, 0],
image: {
type: 'jpeg',
quality: 0.95
},
enableLinks: true,
html2canvas: {},
jsPDF: {}
}
};
/* ----- FROM / TO ----- */
Worker.prototype.from = function from(src, type) {
function getType(src) {
switch ((0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.objType)(src)) {
case 'string':
return 'string';
case 'element':
return src.nodeName.toLowerCase && src.nodeName.toLowerCase() === 'canvas' ? 'canvas' : 'element';
default:
return 'unknown';
}
}
return this.then(function from_main() {
type = type || getType(src);
switch (type) {
case 'string':
return this.set({
src: (0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.createElement)('div', {
innerHTML: src
})
});
case 'element':
return this.set({
src: src
});
case 'canvas':
return this.set({
canvas: src
});
case 'img':
return this.set({
img: src
});
default:
return this.error('Unknown source type.');
}
});
};
Worker.prototype.to = function to(target) {
// Route the 'to' request to the appropriate method.
switch (target) {
case 'container':
return this.toContainer();
case 'canvas':
return this.toCanvas();
case 'img':
return this.toImg();
case 'pdf':
return this.toPdf();
default:
return this.error('Invalid target.');
}
};
Worker.prototype.toContainer = function toContainer() {
// Set up function prerequisites.
var prereqs = [function checkSrc() {
return this.prop.src || this.error('Cannot duplicate - no source HTML.');
}, function checkPageSize() {
return this.prop.pageSize || this.setPageSize();
}];
return this.thenList(prereqs).then(function toContainer_main() {
// 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: this.prop.pageSize.inner.width + this.prop.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 source = (0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.cloneNode)(this.prop.src, this.opt.html2canvas.javascriptEnabled);
this.prop.overlay = (0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.createElement)('div', {
className: 'html2pdf__overlay',
style: overlayCSS
});
this.prop.container = (0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.createElement)('div', {
className: 'html2pdf__container',
style: containerCSS
});
this.prop.container.appendChild(source);
this.prop.overlay.appendChild(this.prop.container);
document.body.appendChild(this.prop.overlay);
});
};
Worker.prototype.toCanvas = function toCanvas() {
// Set up function prerequisites.
var prereqs = [function checkContainer() {
return document.body.contains(this.prop.container) || this.toContainer();
}]; // Fulfill prereqs then create the canvas.
return this.thenList(prereqs).then(function toCanvas_main() {
// Handle old-fashioned 'onrendered' argument.
var options = Object.assign({}, this.opt.html2canvas);
delete options.onrendered;
return html2canvas_pro__WEBPACK_IMPORTED_MODULE_9__(this.prop.container, options);
}).then(function toCanvas_post(canvas) {
// Handle old-fashioned 'onrendered' argument.
var onRendered = this.opt.html2canvas.onrendered || function () {};
onRendered(canvas);
this.prop.canvas = canvas;
document.body.removeChild(this.prop.overlay);
});
};
Worker.prototype.toImg = function toImg() {
// Set up function prerequisites.
var prereqs = [function checkCanvas() {
return this.prop.canvas || this.toCanvas();
}]; // Fulfill prereqs then create the image.
return this.thenList(prereqs).then(function toImg_main() {
var imgData = this.prop.canvas.toDataURL('image/' + this.opt.image.type, this.opt.image.quality);
this.prop.img = document.createElement('img');
this.prop.img.src = imgData;
});
};
Worker.prototype.toPdf = function toPdf() {
// Set up function prerequisites.
var prereqs = [function checkCanvas() {
return this.prop.canvas || this.toCanvas();
}, function checkPageSize() {
return this.prop.pageSize || this.setPageSize();
}]; // Fulfill prereqs then create the image.
return this.thenList(prereqs).then(function toPdf_main() {
// Create local copies of frequently used properties.
var canvas = this.prop.canvas;
var opt = this.opt; // Calculate the number of pages.
var pxFullHeight = canvas.height;
var pxPageHeight = Math.floor(canvas.width * this.prop.pageSize.inner.ratio);
var nPages = Math.ceil(pxFullHeight / pxPageHeight); // Define pageHeight separately so it can be trimmed on the final page.
var pageHeight = this.prop.pageSize.inner.height; // Create a one-page canvas to split up the full image.
var pageCanvas = document.createElement('canvas');
var pageCtx = pageCanvas.getContext('2d');
pageCanvas.width = canvas.width;
pageCanvas.height = pxPageHeight; // Initialize the PDF.
this.prop.pdf = this.prop.pdf || new jspdf__WEBPACK_IMPORTED_MODULE_8__.jsPDF(opt.jsPDF);
for (var page = 0; page < nPages; page++) {
// Trim the final page to reduce file size.
if (page === nPages - 1 && pxFullHeight % pxPageHeight !== 0) {
pageCanvas.height = pxFullHeight % pxPageHeight;
pageHeight = pageCanvas.height * this.prop.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) this.prop.pdf.addPage();
var imgData = pageCanvas.toDataURL('image/' + opt.image.type, opt.image.quality);
this.prop.pdf.addImage(imgData, opt.image.type, opt.margin[1], opt.margin[0], this.prop.pageSize.inner.width, pageHeight);
}
});
};
/* ----- OUTPUT / SAVE ----- */
Worker.prototype.output = function output(type, options, src) {
// Redirect requests to the correct function (outputPdf / outputImg).
src = src || 'pdf';
if (src.toLowerCase() === 'img' || src.toLowerCase() === 'image') {
return this.outputImg(type, options);
} else {
return this.outputPdf(type, options);
}
};
Worker.prototype.outputPdf = function outputPdf(type, options) {
// Set up function prerequisites.
var prereqs = [function checkPdf() {
return this.prop.pdf || this.toPdf();
}]; // Fulfill prereqs then perform the appropriate output.
return this.thenList(prereqs).then(function outputPdf_main() {
/* Currently implemented output types:
* https://rawgit.com/MrRio/jsPDF/master/docs/jspdf.js.html#line992
* save(options), arraybuffer, blob, bloburi/bloburl,
* datauristring/dataurlstring, dataurlnewwindow, datauri/dataurl
*/
return this.prop.pdf.output(type, options);
});
};
Worker.prototype.outputImg = function outputImg(type, options) {
// Set up function prerequisites.
var prereqs = [function checkImg() {
return this.prop.img || this.toImg();
}]; // Fulfill prereqs then perform the appropriate output.
return this.thenList(prereqs).then(function outputImg_main() {
switch (type) {
case undefined:
case 'img':
return this.prop.img;
case 'datauristring':
case 'dataurlstring':
return this.prop.img.src;
case 'datauri':
case 'dataurl':
return document.location.href = this.prop.img.src;
default:
throw 'Image output type "' + type + '" is not supported.';
}
});
};
Worker.prototype.save = function save(filename) {
// Set up function prerequisites.
var prereqs = [function checkPdf() {
return this.prop.pdf || this.toPdf();
}]; // Fulfill prereqs, update the filename (if provided), and save the PDF.
return this.thenList(prereqs).set(filename ? {
filename: filename
} : null).then(function save_main() {
this.prop.pdf.save(this.opt.filename);
});
};
/* ----- SET / GET ----- */
Worker.prototype.set = function set(opt) {
// TODO: Implement ordered pairs?
// Silently ignore invalid or empty input.
if ((0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.objType)(opt) !== 'object') {
return this;
} // Build an array of setter functions to queue.
var fns = Object.keys(opt || {}).map(function (key) {
switch (key) {
case 'margin':
return this.setMargin.bind(this, opt.margin);
case 'jsPDF':
return function set_jsPDF() {
this.opt.jsPDF = opt.jsPDF;
return this.setPageSize();
};
case 'pageSize':
return this.setPageSize.bind(this, opt.pageSize);
default:
if (key in Worker.template.prop) {
// Set pre-defined properties in prop.
return function set_prop() {
this.prop[key] = opt[key];
};
} else {
// Set any other properties in opt.
return function set_opt() {
this.opt[key] = opt[key];
};
}
}
}, this); // Set properties within the promise chain.
return this.then(function set_main() {
return this.thenList(fns);
});
};
Worker.prototype.get = function get(key, cbk) {
return this.then(function get_main() {
// Fetch the requested property, either as a predefined prop or in opt.
var val = key in Worker.template.prop ? this.prop[key] : this.opt[key];
return cbk ? cbk(val) : val;
});
};
Worker.prototype.setMargin = function setMargin(margin) {
return this.then(function setMargin_main() {
// Parse the margin property: [top, left, bottom, right].
switch ((0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.objType)(margin)) {
case 'number':
margin = [margin, margin, margin, margin];
case 'array':
if (margin.length === 2) {
margin = [margin[0], margin[1], margin[0], margin[1]];
}
if (margin.length === 4) {
break;
}
default:
return this.error('Invalid margin array.');
} // Set the margin property, then update pageSize.
this.opt.margin = margin;
}).then(this.setPageSize);
};
Worker.prototype.setPageSize = function setPageSize(pageSize) {
return this.then(function setPageSize_main() {
// Retrieve page-size based on jsPDF settings, if not explicitly provided.
pageSize = pageSize || jspdf__WEBPACK_IMPORTED_MODULE_8__.jsPDF.getPageSize(this.opt.jsPDF); // Add 'inner' field if not present.
if (!pageSize.hasOwnProperty('inner')) {
pageSize.inner = {
width: pageSize.width - this.opt.margin[1] - this.opt.margin[3],
height: pageSize.height - this.opt.margin[0] - this.opt.margin[2]
};
pageSize.inner.px = {
width: (0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.toPx)(pageSize.inner.width, pageSize.k),
height: (0,_utils_js__WEBPACK_IMPORTED_MODULE_10__.toPx)(pageSize.inner.height, pageSize.k)
};
pageSize.inner.ratio = pageSize.inner.height / pageSize.inner.width;
} // Attach pageSize to this.
this.prop.pageSize = pageSize;
});
};
Worker.prototype.setProgress = function setProgress(val, state, n, stack) {
// Immediately update all progress values.
if (val != null) this.progress.val = val;
if (state != null) this.progress.state = state;
if (n != null) this.progress.n = n;
if (stack != null) this.progress.stack = stack;
this.progress.ratio = this.progress.val / this.progress.state; // Return this for command chaining.
return this;
};
Worker.prototype.updateProgress = function updateProgress(val, state, n, stack) {
// Immediately update all progress values, using setProgress.
return this.setProgress(val ? this.progress.val + val : null, state ? state : null, n ? this.progress.n + n : null, stack ? this.progress.stack.concat(stack) : null);
};
/* ----- PROMISE MAPPING ----- */
Worker.prototype.then = function then(onFulfilled, onRejected) {
// Wrap `this` for encapsulation.
var self = this;
return this.thenCore(onFulfilled, onRejected, function then_main(onFulfilled, onRejected) {
// Update progress while queuing, calling, and resolving `then`.
self.updateProgress(null, null, 1, [onFulfilled]);
return Promise.prototype.then.call(this, function then_pre(val) {
self.updateProgress(null, onFulfilled);
return val;
}).then(onFulfilled, onRejected).then(function then_post(val) {
self.updateProgress(1);
return val;
});
});
};
Worker.prototype.thenCore = function thenCore(onFulfilled, onRejected, thenBase) {
// Handle optional thenBase parameter.
thenBase = thenBase || Promise.prototype.then; // Wrap `this` for encapsulation and bind it to the promise handlers.
var self = this;
if (onFulfilled) {
onFulfilled = onFulfilled.bind(self);
}
if (onRejected) {
onRejected = onRejected.bind(self);
} // Cast self into a Promise to avoid polyfills recursively defining `then`.
var isNative = Promise.toString().indexOf('[native code]') !== -1 && Promise.name === 'Promise';
var selfPromise = isNative ? self : Worker.convert(Object.assign({}, self), Promise.prototype); // Return the promise, after casting it into a Worker and preserving props.
var returnVal = thenBase.call(selfPromise, onFulfilled, onRejected);
return Worker.convert(returnVal, self.__proto__);
};
Worker.prototype.thenExternal = function thenExternal(onFulfilled, onRejected) {
// Call `then` and return a standard promise (exits the Worker chain).
return Promise.prototype.then.call(this, onFulfilled, onRejected);
};
Worker.prototype.thenList = function thenList(fns) {
// Queue a series of promise 'factories' into the promise chain.
var self = this;
fns.forEach(function thenList_forEach(fn) {
self = self.thenCore(fn);
});
return self;
};
Worker.prototype['catch'] = function (onRejected) {
// Bind `this` to the promise handler, call `catch`, and return a Worker.
if (onRejected) {
onRejected = onRejected.bind(this);
}
var returnVal = Promise.prototype['catch'].call(this, onRejected);
return Worker.convert(returnVal, this);
};
Worker.prototype.catchExternal = function catchExternal(onRejected) {
// Call `catch` and return a standard promise (exits the Worker chain).
return Promise.prototype['catch'].call(this, onRejected);
};
Worker.prototype.error = function error(msg) {
// Throw the error in the Promise chain.
return this.then(function error_main() {
throw new Error(msg);
});
};
/* ----- ALIASES ----- */
Worker.prototype.using = Worker.prototype.set;
Worker.prototype.saveAs = Worker.prototype.save;
Worker.prototype.export = Worker.prototype.output;
Worker.prototype.run = Worker.prototype.then;
/* ----- FINISHING ----- */
// Expose the Worker class.
/* harmony default export */ __webpack_exports__["default"] = (Worker);
/***/ }),
/***/ "./node_modules/core-js/internals/a-function.js":
/*!******************************************************!*\
!*** ./node_modules/core-js/internals/a-function.js ***!
\******************************************************/
/***/ (function(module) {
module.exports = function (it) {
if (typeof it != 'function') {
throw TypeError(String(it) + ' is not a function');
} return it;
};
/***/ }),
/***/ "./node_modules/core-js/internals/a-possible-prototype.js":
/*!****************************************************************!*\
!*** ./node_modules/core-js/internals/a-possible-prototype.js ***!
\****************************************************************/
/***/ (function(module, __unused_webpack_exports, __webpack_require__) {
var isObject = __webpack_require__(/*! ../internals/is-object */ "./node_modules/core-js/internals/is-object.js");
module.exports = function (it) {
if (!isObject(it) && it !== null) {
throw TypeError("Can't set " + String(it) + ' as a prototype');
} return it;
};
/***/ }),
/***/ "./node_modules/core-js/internals/add-to-unscopables.js":
/*!**************************************************************!*\
!*** ./node_modules/core-js/internals/add-to-unscopables.js ***!
\**************************************************************/
/***/ (function(module, __unused_webpack_exports, __webpack_require__) {
var wellKnownSymbol = __webpack_require__(/*! ../internals/well-known-symbol */ "./node_modules/core-js/internals/well-known-symbol.js");
var create = __webpack_requi