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index.js
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// source: https://github.com/OpenSlides/OpenSlides/blob/f4f8b8422f9b3fbab58e35ac3f8f870d35813b7d/client/src/app/core/ui-services/html-to-pdf.service.ts
// and https://github.com/bpampuch/pdfmake/issues/205
/**
To use it:
import htmlToPdfMake from 'html-to-pdfmake.js'
htmlToPdfMake('<b>my bold text</b>');
*/
/**
* Transform HTML code to a PdfMake object
* @param {String} htmlText The HTML code to transform
* @param {Object} [options]
* @param {Object} [defaultStyles] An object with the default styles for each elements
* @param {Boolean} [tableAutoSize=false] It permits to use the width/height defined in styles for a table's cells and rows
* @param {Boolean} [imagesByReference=false] It permits to return two objets ({content, images}) to handle the `<img>` tags by reference
* @param {Boolean} [removeExtraBlanks=false] Some blank spaces in your code may cause extra blank lines in the PDF – use this option to remove them
* @param {Boolean} [showHidden=false] TRUE if the 'display:none' elements should be displayed
* @param {Boolean} [removeTagClasses=false] TRUE if we don't want to have 'html-TAG' added as a class for each node
* @param {Array} [ignoreStyles=[]] An array of style property to ignore
* @param {Function} [customTag] It permits to handle non-regular HTML tag
* @param {Object} [window] The `window` object (required for NodeJS server side use)
* @param {String} [maxImageWidth] The maximum width of the image
* @return {Object} it returns a PdfMake object
*
* @example
* // Some styles are applied by defaults for the supported HTML elements
* // but you can pass your own styles if you prefer
* htmlToPdfMake('<div><h1>My Title</h1><p>My paragraph</p></div>');
*
* // If you want to overwrite the default styles, e.g. you want <li> to not have a margin-left, and links to be 'purple' and not 'blue', and links without 'underline'
* htmlToPdfMake('<ul><li>this is <a href="...">a link</a></li><li>another item</li></ul>', {
* defaultStyles:{
* a:{
* color:'purple',
* decoration:null
* },
* li:null
* }
* });
*/
//var util = require("util"); // to debug
function htmlToPdfMake(htmlText, options) {
'use strict';
this.wndw = options && options.window ? options.window : window;
this.tableAutoSize =
options && typeof options.tableAutoSize === 'boolean'
? options.tableAutoSize
: false;
this.imagesByReference =
options && typeof options.imagesByReference === 'boolean'
? options.imagesByReference
: false;
this.removeExtraBlanks =
options && typeof options.removeExtraBlanks === 'boolean'
? options.removeExtraBlanks
: false;
this.showHidden =
options && typeof options.showHidden === 'boolean'
? options.showHidden
: false;
this.removeTagClasses =
options && typeof options.removeTagClasses === 'boolean'
? options.removeTagClasses
: false;
this.ignoreStyles =
options && Array.isArray(options.ignoreStyles) ? options.ignoreStyles : [];
this.id = options && options.id ? options.id : 0;
this.proxy = options && options.proxy ? options.proxy : null;
this.maxImageWidth =
options && options.maxImageWidth ? options.maxImageWidth : null;
// A random string to be used in the image references
//var imagesByReferenceSuffix = (Math.random().toString(36).slice(2,8));
// Used with the size attribute on the font elements to calculate relative font size
this.fontSizes =
options && Array.isArray(options.fontSizes)
? options.fontSizes
: [10, 14, 16, 18, 20, 24, 28];
// set default styles
this.defaultStyles = {
b: { bold: true },
strong: { bold: true },
u: { decoration: 'underline' },
del: { decoration: 'lineThrough' },
s: { decoration: 'lineThrough' },
em: { italics: true },
i: { italics: true },
h1: { fontSize: 24, bold: true, marginBottom: 5 },
h2: { fontSize: 22, bold: true, marginBottom: 5 },
h3: { fontSize: 20, bold: true, marginBottom: 5 },
h4: { fontSize: 18, bold: true, marginBottom: 5 },
h5: { fontSize: 16, bold: true, marginBottom: 5 },
h6: { fontSize: 14, bold: true, marginBottom: 5 },
a: { decoration: 'underline' },
strike: { decoration: 'lineThrough' },
p: { margin: [0, 5, 0, 10] },
ul: { marginBottom: 5, marginLeft: 5 },
table: { marginBottom: 5 },
th: { bold: true, fillColor: '#EEEEEE' },
};
// store the references to the images
this.imagesRef = [];
/**
* Permit to change the default styles based on the options
*/
this.changeDefaultStyles = function () {
for (var keyStyle in options.defaultStyles) {
if (this.defaultStyles.hasOwnProperty(keyStyle)) {
// if we want to remove a default style
if (
options.defaultStyles.hasOwnProperty(keyStyle) &&
!options.defaultStyles[keyStyle]
) {
delete this.defaultStyles[keyStyle];
} else {
for (var k in options.defaultStyles[keyStyle]) {
// if we want to delete a specific property
if (options.defaultStyles[keyStyle][k] === '')
delete this.defaultStyles[keyStyle][k];
else
this.defaultStyles[keyStyle][k] =
options.defaultStyles[keyStyle][k];
}
}
} else {
// if we add default styles
this.defaultStyles[keyStyle] = {};
for (var ks in options.defaultStyles[keyStyle]) {
this.defaultStyles[keyStyle][ks] =
options.defaultStyles[keyStyle][ks];
}
}
}
};
if (options && options.defaultStyles) {
this.changeDefaultStyles();
}
/**
* Takes an HTML string, converts to HTML using a DOM parser and recursivly parses
* the content into pdfmake compatible doc definition
*
* @param htmlText the html text to translate as string
* @returns pdfmake doc definition as object
*/
this.convertHtml = function (htmlText) {
// Create a HTML DOM tree out of html string
var parser = new this.wndw.DOMParser();
if (this.removeExtraBlanks)
htmlText = htmlText
.replace(
/(<\/?(div|p|h1|h2|h3|h4|h5|h6|ul|li)([^>]+)?>)\s+(<\/?(div|p|h1|h2|h3|h4|h5|h6|ul|li))/gi,
'$1$4'
)
.replace(
/(<\/?(div|p|h1|h2|h3|h4|h5|h6|ul|li)([^>]+)?>)\s+(<\/?(div|p|h1|h2|h3|h4|h5|h6|ul|li))/gi,
'$1$4'
);
var parsedHtml = parser.parseFromString(htmlText, 'text/html');
var docDef = this.parseElement(parsedHtml.body, []);
// remove first level
return docDef.stack || docDef.text;
};
/**
* Converts a single HTML element to pdfmake, calls itself recursively for child html elements
*
* @param element can be an HTML element (<p>) or plain text ("Hello World")
* @param parentNode the parent node for the current element
* @param parents Array of node names of all the parents for the element
* @returns the doc def to the given element in consideration to the given paragraph and styles
*/
this.parseElement = function (element, parents) {
var nodeName = element.nodeName.toUpperCase();
var nodeNameLowerCase = nodeName.toLowerCase();
var ret = { text: [] };
var text,
needStack = false;
var dataset,
i,
key,
_this = this;
// ignore some HTML tags
if (['COLGROUP', 'COL'].indexOf(nodeName) > -1) return '';
switch (element.nodeType) {
case 3: {
// TEXT_NODE
if (element.textContent) {
text = element.textContent;
// check if we have 'white-space' in the parent's style
var styleParentTextNode = this.parseStyle(
parents[parents.length - 1],
true
);
var hasWhiteSpace = false;
for (i = 0; i < styleParentTextNode.length; i++) {
if (styleParentTextNode[i].key === 'preserveLeadingSpaces') {
hasWhiteSpace = styleParentTextNode[i].value;
break;
}
}
// if no 'white-space' style, then deal with white spaces
if (!hasWhiteSpace) text = text.replace(/\s*\n\s*/g, ' ');
if (options && typeof options.replaceText === 'function')
text = options.replaceText(text, parents);
// for table, thead, tbody, tfoot, tr, ul, ol: remove all empty space
if (
['TABLE', 'THEAD', 'TBODY', 'TFOOT', 'TR', 'UL', 'OL'].indexOf(
parents[parents.length - 1].nodeName
) > -1
)
text = text.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
if (text) {
ret = { text: text };
ret = this.applyStyle({ ret: ret, parents: parents });
return ret;
}
}
return '';
}
case 1: {
// ELEMENT_NODE
if (
(!this.showHidden &&
element.style.display &&
element.style.display === 'none') ||
(element.style.visibility && element.style.visibility === 'hidden')
) {
return;
}
ret.nodeName = nodeName;
if (element.id) ret.id = element.id;
parents.push(element);
if (element.childNodes && element.childNodes.length > 0) {
[].forEach.call(element.childNodes, function (child) {
var res = _this.parseElement(child, parents);
if (res) {
if (Array.isArray(res.text) && res.text.length === 0)
res.text = '';
ret.text.push(res);
}
});
//console.log(nodeName,'=>',util.inspect(ret.text, {showHidden: false, depth: null})); // to debug
// find if we need a 'stack' instead of a 'text'
needStack = this.searchForStack(ret);
if (needStack) {
ret.stack = ret.text.slice(0);
delete ret.text;
} else {
// apply all the inhirent classes and styles from the parents
ret = this.applyStyle({ ret: ret, parents: parents });
}
}
parents.pop();
switch (nodeName) {
case 'TABLE': {
var rowIndex, cellIndex;
// the format for the table is table.body[[], [], …]
ret.table = { body: [] };
var tbodies = ret.stack || ret.text;
if (Array.isArray(tbodies)) {
rowIndex = 0;
// Array with All Rows including THEAD
var allRows = [];
// for each THEAD / TBODY
tbodies.forEach(function (tbody) {
// for each row
var rows = tbody.stack || tbody.text;
if (Array.isArray(rows)) {
// Add rows to allRows
allRows = allRows.concat(rows);
rows.forEach(function (row) {
var cells = row.stack || row.text;
// for each cell
if (Array.isArray(cells)) {
cellIndex = 0;
ret.table.body[rowIndex] = [];
cells.forEach(function (cell) {
ret.table.body[rowIndex].push(cell);
// do we have a colSpan?
// if yes, insert empty cells due to colspan
if (cell.colSpan > 1) {
i = cell.colSpan;
// do we have a rowSpan in addition of the colSpan?
_this.setRowSpan({
rows: allRows,
cell: cell,
rowIndex: rowIndex,
cellIndex: cellIndex,
});
while (--i > 0) {
ret.table.body[rowIndex].push({ text: '' });
// keep adding empty cell due to rowspan
_this.setRowSpan({
rows: allRows,
cell: cell,
rowIndex: rowIndex,
cellIndex: cellIndex,
});
cellIndex++;
}
} else {
// do we have a rowSpan ?
_this.setRowSpan({
rows: allRows,
cell: cell,
rowIndex: rowIndex,
cellIndex: cellIndex,
});
}
cellIndex++;
});
rowIndex++;
}
});
}
});
}
delete ret.stack;
delete ret.text;
// apply all the inhirent classes and styles from the parents, or for the current element
ret = this.applyStyle({
ret: ret,
parents: parents.concat([element]),
});
// if option tableAutoSize, then we try to apply the correct width/height on the table
if (this.tableAutoSize) {
var cellsWidths = [];
var cellsHeights = [];
var tableWidths = [];
var tableHeights = [];
// determine if we have "width:100%" on the TABLE
var fullWidth =
element.getAttribute('width') === '100%' ||
(element.getAttribute('style') || '')
.replace(/width\s*:\s*100%/, 'width:100%')
.includes('width:100%');
ret.table.body.forEach(function (row, rowIndex) {
cellsWidths.push([]);
cellsHeights.push([]);
row.forEach(function (cell) {
// we want to remember the different sizes
var width =
typeof cell.width !== 'undefined' ? cell.width : 'auto';
var height =
typeof cell.height !== 'undefined' ? cell.height : 'auto';
// check if we have colspan or rowspan
// if yes, and if width/height is a number, we divide by the col/rowspan, otherwise we use 'auto'
if (width !== 'auto' && cell.colSpan > 1) {
if (!isNaN(width)) width /= cell.colSpan;
else width = 'auto';
}
if (height !== 'auto' && cell.rowSpan > 1) {
if (!isNaN(height)) height /= cell.rowSpan;
else height = 'auto';
}
cellsWidths[rowIndex].push(width);
cellsHeights[rowIndex].push(height);
});
});
// determine the max width for each cell
cellsWidths.forEach(function (row) {
row.forEach(function (cellWidth, cellIndex) {
var type = typeof tableWidths[cellIndex];
if (
type === 'undefined' ||
(cellWidth !== 'auto' &&
type === 'number' &&
cellWidth > tableWidths[cellIndex]) ||
(cellWidth !== 'auto' && tableWidths[cellIndex] === 'auto')
) {
tableWidths[cellIndex] = cellWidth;
}
});
});
// determine the max height for each row
cellsHeights.forEach(function (row, rowIndex) {
row.forEach(function (cellHeight) {
var type = typeof tableHeights[rowIndex];
if (
type === 'undefined' ||
(cellHeight !== 'auto' &&
type === 'number' &&
cellHeight > tableHeights[rowIndex]) ||
(cellHeight !== 'auto' && tableHeights[rowIndex] === 'auto')
) {
tableHeights[rowIndex] = cellHeight;
}
});
});
if (tableWidths.length > 0) {
// if all columns are in 'auto' and if we have 'width:"100%"' for the table
// then put widths:['*', '*' …], for all columns
//if (fullWidth && tableWidths.filter(function(w) { return w==='auto' }).length === tableWidths.length) tableWidths=tableWidths.map(function() { return '*' });
// see https://github.com/Aymkdn/html-to-pdfmake/issues/151#issuecomment-1273015585
// if we have 'width:"100%"' for the table, replace "auto" width to "*"
if (fullWidth)
tableWidths = tableWidths.map(function (w) {
return w === 'auto' ? '*' : w;
});
ret.table.widths = tableWidths;
}
if (tableHeights.length > 0) ret.table.heights = tableHeights;
}
// check if we have some data-pdfmake to apply
if (element.dataset && element.dataset.pdfmake) {
// handle when people will use simple quotes, e.g. <table data-pdfmake="{'layout':'noBorders'}">
dataset = element.dataset.pdfmake;
if (dataset.charAt(1) === "'")
dataset = dataset.replace(/'/g, '"');
try {
dataset = JSON.parse(dataset);
for (key in dataset) {
if (key === 'layout') {
ret.layout = dataset[key];
} else {
ret.table[key] = dataset[key];
}
}
} catch (e) {
console.error(e);
}
}
break;
}
case 'TH':
case 'TD': {
if (element.getAttribute('rowspan'))
ret.rowSpan = element.getAttribute('rowspan') * 1;
if (element.getAttribute('colspan'))
ret.colSpan = element.getAttribute('colspan') * 1;
// apply all the inhirent classes and styles from the parents, or for the current element
ret = this.applyStyle({
ret: ret,
parents: parents.concat([element]),
});
break;
}
case 'SVG': {
ret = {
svg: element.outerHTML.replace(/\n(\s+)?/g, ''),
nodeName: 'SVG',
};
if (!this.removeTagClasses) ret.style = ['html-svg'];
break;
}
case 'BR': {
// for BR we return '\n'
ret.text = [{ text: '\n' }];
break;
}
case 'SUB':
case 'SUP': {
ret[nodeName.toLowerCase()] = { offset: '30%', fontSize: 8 };
break;
}
case 'HR': {
// default style for the HR
var styleHR = {
width: 514,
type: 'line',
margin: [0, 12, 0, 12],
thickness: 0.5,
color: '#000000',
left: 0,
};
// we can override the default HR style with "data-pdfmake"
if (element.dataset && element.dataset.pdfmake) {
dataset = JSON.parse(element.dataset.pdfmake);
for (key in dataset) {
styleHR[key] = dataset[key];
}
}
ret.margin = styleHR.margin;
ret.canvas = [
{
type: styleHR.type,
x1: styleHR.left,
y1: 0,
x2: styleHR.width,
y2: 0,
lineWidth: styleHR.thickness,
lineColor: styleHR.color,
},
];
delete ret.text;
break;
}
case 'OL':
case 'UL': {
ret[nodeNameLowerCase] = (ret.stack || ret.text).slice(0);
delete ret.stack;
delete ret.text;
// apply all the inhirent classes and styles from the parents, or for the current element
ret = this.applyStyle({
ret: ret,
parents: parents.concat([element]),
});
// check if we have `start`
if (element.getAttribute('start')) {
ret.start = element.getAttribute('start') * 1;
}
// check if we have "type"
switch (element.getAttribute('type')) {
case 'A':
ret.type = 'upper-alpha';
break;
case 'a':
ret.type = 'lower-alpha';
break;
case 'I':
ret.type = 'upper-roman';
break;
case 'i':
ret.type = 'lower-roman';
break;
}
// check if we have `list-style-type` or `list-style`
if (ret.listStyle || ret.listStyleType)
ret.type = ret.listStyle || ret.listStyleType;
break;
}
case 'LI': {
// if it's a stack, then check if the last child has a "text"
if (ret.stack && !ret.stack[ret.stack.length - 1].text) {
// if not, we restructure our node
text = ret.stack.slice(0, -1);
ret = [{ text: text }, ret.stack[ret.stack.length - 1]];
}
// we don't want a child of UL/OL to be an array, but it should be a "stack"
if (Array.isArray(ret)) {
ret = { stack: ret };
}
break;
}
case 'IMG': {
if (this.imagesByReference) {
var src = element.getAttribute('data-src') || element.getAttribute('src');
if (this.proxy) {
src = this.proxy + src;
}
var index = this.imagesRef.indexOf(src);
if (index > -1) {
ret.image = 'img_ref_' + this.id + '_' + index;
} else {
ret.image = 'img_ref_' + this.id + '_' + this.imagesRef.length;
var promise = new Promise(function (resolve, reject) {
var img = new Image();
img.onload = function () {
delete ret.stack;
delete ret.text;
if (this.width > _this.maxImageWidth) {
var ratio = _this.maxImageWidth / this.width;
ret.width = _this.maxImageWidth;
ret.height = this.height * ratio;
}
// apply all the inhirent classes and styles from the parents, or for the current element
_this.applyStyle({
ret: ret,
parents: parents.concat([element]),
});
resolve(img);
};
img.onerror = function () {
_this.applyStyle({ ret: ret });
reject('Error loading image');
};
img.src = src;
});
this.imagesRef.push(promise);
}
} else {
ret.image = element.getAttribute('src');
this.applyStyle({
ret: ret,
parents: parents.concat([element]),
});
}
break;
}
case 'A': {
// the link must be applied to the deeper `text` or stacked element (e.g. `image`)
var setLink = function (pointer, href) {
pointer = pointer || { text: '' }; // for link without any text
if (Array.isArray(pointer.text)) {
return setLink(pointer.text[0], href);
} else if (Array.isArray(pointer.stack)) {
// if we have a more complex layer
pointer.stack = pointer.stack.map(function (stack) {
return setLink(stack, href);
});
return pointer;
}
// if 'href' starts with '#' then it's an internal link
if (href.indexOf('#') === 0)
pointer.linkToDestination = href.slice(1);
else pointer.link = href;
return pointer;
};
if (element.getAttribute('href')) {
ret = setLink(ret, element.getAttribute('href'));
ret.nodeName = 'A';
}
break;
}
default: {
// handle other cases
if (options && typeof options.customTag === 'function') {
ret = options.customTag.call(this, {
element: element,
parents: parents,
ret: ret,
});
}
}
}
// reduce the number of JSON properties
if (
Array.isArray(ret.text) &&
ret.text.length === 1 &&
ret.text[0].text &&
!ret.text[0].nodeName
) {
ret.text = ret.text[0].text;
}
// check if we have some data-pdfmake to apply
if (
['HR', 'TABLE'].indexOf(nodeName) === -1 &&
element.dataset &&
element.dataset.pdfmake
) {
dataset = JSON.parse(element.dataset.pdfmake);
for (key in dataset) {
ret[key] = dataset[key];
}
}
return ret;
}
}
};
this.searchForStack = function (ret) {
if (Array.isArray(ret.text)) {
for (var i = 0; i < ret.text.length; i++) {
if (
ret.text[i].stack ||
[
'P',
'DIV',
'TABLE',
'SVG',
'UL',
'OL',
'IMG',
'H1',
'H2',
'H3',
'H4',
'H5',
'H6',
].indexOf(ret.text[i].nodeName) > -1
)
return true;
if (this.searchForStack(ret.text[i]) === true) return true;
}
}
return false;
};
/**
* Add empty cells due to rowspan
*
* @param {Object} params
* @param {Array} rows
* @param {Object} cell
* @param {Number} rowIndex Current row index
* @param {Number} cellIndex Current cell index
*/
this.setRowSpan = function (params) {
var cells;
if (params.cell.rowSpan) {
for (var i = 1; i <= params.cell.rowSpan - 1; i++) {
cells =
params.rows[params.rowIndex + i].text ||
params.rows[params.rowIndex + i].stack;
cells.splice(params.cellIndex, 0, { text: '' });
}
}
};
/**
* Apply style and classes from all the parents
*
* @param {Object} params
* @param {Object} ret The object that will receive the 'style' and other properties
* @param {Array} parents Array of node elements
* @return {Object} the modified 'ret'
*/
this.applyStyle = function (params) {
if (!params.parents || params.parents.length === 0) return params.ret;
var cssClass = [];
var lastIndex = params.parents.length - 1;
var _this = this;
params.parents.forEach(function (parent, parentIndex) {
// classes
var parentNodeName = parent.nodeName.toLowerCase();
if (!_this.removeTagClasses) {
var htmlClass = 'html-' + parentNodeName;
if (htmlClass !== 'html-body' && cssClass.indexOf(htmlClass) === -1)
cssClass.unshift(htmlClass);
}
var parentClass = (parent.getAttribute('class') || '').split(' ');
parentClass.forEach(function (p) {
if (p) cssClass.push(p);
});
// styles
var style;
// not all the CSS properties should be inherent
var ignoreNonDescendentProperties = parentIndex !== lastIndex;
// 1) the default styles
if (_this.defaultStyles[parentNodeName]) {
for (style in _this.defaultStyles[parentNodeName]) {
if (_this.defaultStyles[parentNodeName].hasOwnProperty(style)) {
if (
!ignoreNonDescendentProperties ||
(ignoreNonDescendentProperties &&
style.indexOf('margin') === -1 &&
style.indexOf('border') === -1)
) {
// 'decoration' can be an array
if (style === 'decoration') {
if (!Array.isArray(params.ret[style])) params.ret[style] = [];
// do not apply twice the same (e.g. applying 2 "underline" will cause an extra blank space with an underline)
if (
params.ret[style].indexOf(
_this.defaultStyles[parentNodeName][style]
) === -1
) {
params.ret[style].push(
_this.defaultStyles[parentNodeName][style]
);
}
} else {
params.ret[style] = JSON.parse(
JSON.stringify(_this.defaultStyles[parentNodeName][style])
);
}
}
}
}
}
// 2) element's style
// we want TD/TH to receive descendant properties from TR
if (parentNodeName === 'tr') ignoreNonDescendentProperties = false;
style = _this.parseStyle(parent, ignoreNonDescendentProperties);
style.forEach(function (stl) {
// 'decoration' can be an array
if (stl.key === 'decoration') {
if (!Array.isArray(params.ret[stl.key])) params.ret[stl.key] = [];
params.ret[stl.key].push(stl.value);
} else {
// when 'params.ret.margin' is defined but also a 'marginXYZ' is defined in `stl.key`,
// then we should change the correct index in `params.ret.margin` to reflect it
if (params.ret.margin && stl.key.indexOf('margin') === 0) {
// order: left | top | right | bottom
switch (stl.key) {
case 'marginLeft':
params.ret.margin[0] = stl.value;
break;
case 'marginTop':
params.ret.margin[1] = stl.value;
break;
case 'marginRight':
params.ret.margin[2] = stl.value;
break;
case 'marginBottom':
params.ret.margin[3] = stl.value;
break;
}
} else {
params.ret[stl.key] = stl.value;
}
}
});
});
if (cssClass.length > 0) params.ret.style = cssClass;
return params.ret;
};
/**
* Border Value Rearrange a CSS expression (e.g. 'border:solid 10px red' to 'border:10px solid red')
*
* @param {String} styleStr The CSS expression values
* @returns {String} border value in global accepted format (e.g. 'border:10px solid red')
*/
this.borderValueRearrange = function (styleStr) {
try {
var styleArray = styleStr.split(' ');
if (styleArray.length !== 3) return styleStr;
var v1 = '0px',
v2 = 'none',
v3 = 'transparent';
var style = [
'dotted',
'dashed',
'solid',
'double',
'groove',
'ridge',
'inset',
'outset',
'none',
'hidden',
'mix',
];
styleArray.forEach(function (v) {
if (v.match(/^\d/)) {
v1 = v;
} else if (style.indexOf(v) > -1) {
v2 = v;
} else {
v3 = v;
}
});
return v1 + ' ' + v2 + ' ' + v3;
} catch (e) {
return styleStr;
}
};
/**
* Transform a CSS expression (e.g. 'margin:10px') in the PDFMake version
*
* @param {String} style The CSS expression to transform
* @param {DOMElement} element
* @param {Boolean} ignoreProperties TRUE when we have to ignore some properties, like border, padding, margin
* @returns {Array} array of {key, value}
*/
this.parseStyle = function (element, ignoreProperties) {
var style = element.getAttribute('style') || '';
var ret = [];
style = style.split(';');
// check if we have "width" or "height"
var width = element.getAttribute('width');
var height = element.getAttribute('height');
if (width) {
style.unshift(
'width:' + this.convertToUnit(width + (isNaN(width) ? '' : 'px'))
);
}
if (height) {
style.unshift(
'height:' + this.convertToUnit(height + (isNaN(height) ? '' : 'px'))
);
}
// check if we have 'color' or 'size' -- mainly for '<font>'
var color = element.getAttribute('color');
if (color) {
ret.push({ key: 'color', value: this.parseColor(color) });
}
var size = element.getAttribute('size');
if (size !== null) {
// Getting and sanitizing the size value: it should be included between 1 and 7
size = Math.min(Math.max(1, parseInt(size)), 7);
// Assigning the font size
ret.push({
key: 'fontSize',
value: Math.max(this.fontSizes[0], this.fontSizes[size - 1]),
});
}
var styleDefs = style.map(function (style) {
return style.toLowerCase().split(':');
});
var borders = []; // special treatment for borders
var nodeName = element.nodeName.toUpperCase();
var _this = this;
styleDefs.forEach(function (styleDef) {
if (styleDef.length === 2) {
var key = styleDef[0].trim().toLowerCase();
var value = styleDef[1].trim();
if (_this.ignoreStyles.indexOf(key) === -1) {
switch (key) {
case 'margin': {
if (ignoreProperties) break;
// pdfMake uses a different order than CSS
value = value.split(' ');
if (value.length === 1)
value = [value[0], value[0], value[0], value[0]];
else if (value.length === 2) value = [value[1], value[0]];
// vertical | horizontal ==> horizontal | vertical
else if (value.length === 3)
value = [value[1], value[0], value[1], value[2]];
// top | horizontal | bottom ==> left | top | right | bottom
else if (value.length === 4)
value = [value[3], value[0], value[1], value[2]]; // top | right | bottom | left ==> left | top | right | bottom
// we now need to convert to PT
value.forEach(function (val, i) {
value[i] = _this.convertToUnit(val);
});
// ignore if we have a FALSE in the table
if (value.indexOf(false) === -1)
ret.push({ key: key, value: value });
break;
}
case 'line-height': {
// change % unit
if (typeof value === 'string' && value.slice(-1) === '%') {
value = value.slice(0, -1) / 100;
} else {
value = _this.convertToUnit(value);
}
ret.push({ key: 'lineHeight', value: value });
break;
}
case 'text-align': {
ret.push({ key: 'alignment', value: value });
break;
}
case 'font-weight': {
if (value === 'bold') ret.push({ key: 'bold', value: true });
break;
}
case 'text-decoration': {
ret.push({ key: 'decoration', value: _this.toCamelCase(value) });
break;
}
case 'font-style': {
if (value === 'italic') ret.push({ key: 'italics', value: true });
break;
}
case 'font-family': {
ret.push({
key: 'font',
value: value
.split(',')[0]
.replace(/"|^'|^\s*|\s*$|'$/g, '')
.replace(/^([a-z])/g, function (g) {
return g[0].toUpperCase();
})
.replace(/ ([a-z])/g, function (g) {
return g[1].toUpperCase();
}),
});
break;
}
case 'color': {
ret.push({ key: 'color', value: _this.parseColor(value) });
break;
}
case 'background-color': {
// if TH/TD and key is 'background', then we use 'fillColor' instead
ret.push({
key:
nodeName === 'TD' || nodeName === 'TH'
? 'fillColor'
: 'background',