npm package: @nxmix/svg-to-pdfkit2
Description: Insert SVG into a PDF document created with PDFKit
Author: alafr
Latest version: 0.1.7

# SVG-to-PDFKit

## Notes: Added by forker (jacobbubu)

* Using peerDependencies for pdfkit
* adding callback for element drawing.
* support color from color books
  - must use my forked [pdfkit](https://github.com/jacobbubu/pdfkit)
* support customized getComputedStyle
  - Add getComputedStyleCallback

### Example for parseColorCallback

``` js
import SVGtoPDF from "svg-to-pdfkit";
import { load } from "color-books";

const getColor = (bookName, colorName: string) {
  const book = load(bookName);
  if (book.records[colorName]) {
    return {
      name: colorName,
      colorSpace: book.colorSpace,
      components: book.records[colorName].components,
      isSpot: book.isSpot
    };
  }
};

// <path d="..." fill="COLOR_BOOK(PANTONE+ CMYK Coated/PANTONE P 24-8 C)"></path>
const parseColorCallback = (color) => {
  const temp = color.match(/^COLOR_BOOK\((.+)\/(.+)\)$/);
  if (temp) {
    const [bookName, colorName] = temp.slice(1);
    return getColor(bookName, colorName);
  }
};

const draw = (doc, svg, { left, top, width, height }) => {
  doc.save();
  try {
    SVGtoPDF(doc, svg, left, top, {
      width,
      height,
      parseColorCallback
    });
  } finally {
    doc.restore();
  }
};
```

### Example for getComputedStyleCallback

``` coffee
fs = require 'fs'
PDFDocument = require 'pdfkit'
SVGtoPDF = require 'svg-to-pdfkit'
open = require 'opn'
cheerio = require 'cheerio'
css = require 'css'

doc = new PDFDocument autoFirstPage: false

###
<svg>
    <defs>
        <style>
            .cls-1 {
                fill: red;
            }
            .cls-2 {
                stroke: yellow;
            }
        </style>
    </defs>
    <rect class="cls-1 cls-2" x="0" y="0" width="100" height="100" />
</svg>
###
svgContent = fs.readFileSync 'has-css.svg', 'utf8'

$ = cheerio.load svgContent, xmlMode: true

styles = reduce.call $('svg defs style').contents(), (sum, curr) ->
    if curr.type is 'text'
        sum += curr.data + '\n'
    sum
, ''

parsed = css.parse(styles)

cssProps = parsed.stylesheet.rules.reduce (propsBySelector, rule) ->
    if rule.type is 'rule'
        props = rule.declarations.reduce (sum, decor) ->
            sum[decor.property] = decor.value
            sum
        , {}

        for s in rule.selectors
            propsBySelector[s] = props
    propsBySelector
, {}

doc.pipe fs.createWriteStream 'output.pdf'

doc.addPage { size: [512, 512], margin: 0 }

getComputedStyleCallback = (node) ->
    if node.getAttribute('class')
        classNames = node.getAttribute('class').split(/\s/)
        styles = classNames.reduce((sum, name) ->
            name = '.' + name
            if cssProps[name]
                sum = { sum..., cssProps[name]... }
            sum
        , {})
        styles

SVGtoPDF doc, svgContent, 0, 0, { width: 200, height: 200, getComputedStyleCallback }
doc.end();
```

Insert SVG into a PDF document created with PDFKit.

#### Use:

    SVGtoPDF(doc, svg, x, y, options);

&nbsp; &nbsp; If you prefer, you can add the function to the PDFDocument prototype:

    PDFDocument.prototype.addSVG = function(svg, x, y, options) {
      return SVGtoPDF(this, svg, x, y, options), this;
    };

&nbsp; &nbsp; And then simply call:

    doc.addSVG(svg, x, y, options);

#### Parameters:

    doc [PDFDocument] = the PDF document created with PDFKit
    svg [SVGElement or string] = the SVG object or XML code
    x, y [number] = the position where the SVG will be added
    options [Object] = >
      - width, height [number] = initial viewport, by default it's the page dimensions
      - preserveAspectRatio [string] = override alignment of the SVG content inside its viewport
      - useCSS [boolean] = use the CSS styles computed by the browser (for SVGElement only)
      - fontCallback [function] = function called to get the fonts, see source code
      - imageCallback [function] = same as above for the images (for Node.js)
      - warningCallback [function] = function called when there is a warning
      - assumePt [boolean] = assume that units are PDF points instead of SVG pixels
      - precision [number] = precision factor for approximative calculations (default = 3)

#### Demos:
&nbsp; &nbsp; <a href="https://alafr.github.io/SVG-to-PDFKit/examples/demo.htm" target="_blank">https://alafr.github.io/SVG-to-PDFKit/examples/demo.htm</a>

&nbsp; &nbsp; <a href="https://alafr.github.io/SVG-to-PDFKit/examples/options.htm" target="_blank">https://alafr.github.io/SVG-to-PDFKit/examples/options.htm</a>

#### Supported:
 - shapes: rect, circle, path, ellipse, line, polyline, polygon
 - special elements: use, nested svg
 - text elements: text, tspan, textPath
 - text attributes: x, y, dx, dy, rotate, text-anchor, textLength, word-spacing, letter-spacing, font-size
 - styling: with attributes only
 - colors: fill, stroke & color (rgb, rgba, hex, string), fill-opacity, stroke-opacity & opacity
 - units: all standard units
 - transformations: transform, viewBox & preserveAspectRatio attributes
 - clip paths & masks
 - images
 - fonts
 - gradients
 - patterns

#### Unsupported:
 - links (<a href="https://github.com/alafr/SVG-to-PDFKit/issues/18">#18</a>)
 - filters
 - text attributes: text-decoration, font-variant, writing-mode, unicode-bidi
 - foreignObject (<a href="https://github.com/alafr/SVG-to-PDFKit/issues/37">#37</a>)
 - other things I don't even know they exist

#### Warning:
 - Use an updated PDFKit version (≥0.8.1): see <a href="https://github.com/alafr/pdfkit/wiki/How-to-install-and-build-a-PDFKit-branch">here</a> how to build it, or use the prebuilt file in the <a href="https://github.com/alafr/SVG-to-PDFKit/tree/master/examples">examples</a> folder.
 - There are bugs, please send issues and/or pull requests.

#### License:
&nbsp; &nbsp; <a href="http://choosealicense.com/licenses/mit/">MIT</a>

#### Other useful projects:
 - <a href="https://github.com/devongovett/pdfkit">PDFKit</a>, the JavaScript PDF generation library for Node and the browser.
 - For inserting SVG graphics into a PDFKit document there is also <a href="https://github.com/devongovett/svgkit">svgkit</a>.
 - For the opposite conversion, from PDF to SVG, you can use <a href="https://github.com/mozilla/pdf.js">Mozilla's PDF.js</a>.