fs = require 'fs' vm = require 'vm' md = require('markdown').markdown coffee = require 'coffee-script' CodeMirror = require 'codemirror/addon/runmode/runmode.node' PDFDocument = require '../' process.chdir(__dirname) # setup code mirror coffeescript mode filename = require.resolve('codemirror/mode/coffeescript/coffeescript') coffeeMode = fs.readFileSync filename, 'utf8' vm.runInNewContext coffeeMode, CodeMirror: CodeMirror # style definitions for markdown styles = h1: font: 'fonts/Alegreya-Bold.ttf' fontSize: 25 padding: 15 h2: font: 'fonts/Alegreya-Bold.ttf' fontSize: 18 padding: 10 h3: font: 'fonts/Alegreya-Bold.ttf' fontSize: 18 padding: 10 para: font: 'fonts/Merriweather-Regular.ttf' fontSize: 10 padding: 10 code: font: 'fonts/SourceCodePro-Regular.ttf' fontSize: 9 code_block: padding: 10 background: '#2c2c2c' inlinecode: font: 'fonts/SourceCodePro-Bold.ttf' fontSize: 10 listitem: font: 'fonts/Merriweather-Regular.ttf' fontSize: 10 padding: 6 link: font: 'fonts/Merriweather-Regular.ttf' fontSize: 10 color: 'blue' underline: true example: font: 'Helvetica' fontSize: 9 color: 'black' padding: 10 # syntax highlighting colors # based on Github's theme colors = keyword: '#cb4b16' atom: '#d33682' number: '#009999' def: '#2aa198' variable: '#108888' 'variable-2': '#b58900' 'variable-3': '#6c71c4' property: '#2aa198' operator: '#6c71c4' comment: '#999988' string: '#dd1144' 'string-2': '#009926' meta: '#768E04' qualifier: '#b58900' builtin: '#d33682' bracket: '#cb4b16' tag: '#93a1a1' attribute: '#2aa198' header: '#586e75' quote: '#93a1a1' link: '#93a1a1' special: '#6c71c4' default: '#002b36' # shared lorem ipsum text so we don't need to copy it into every example lorem = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Vivamus nec hendrerit felis. Morbi aliquam facilisis risus eu lacinia. Sed eu leo in turpis fringilla hendrerit. Ut nec accumsan nisl. Suspendisse rhoncus nisl posuere tortor tempus et dapibus elit porta. Cras leo neque, elementum a rhoncus ut, vestibulum non nibh. Phasellus pretium justo turpis. Etiam vulputate, odio vitae tincidunt ultricies, eros odio dapibus nisi, ut tincidunt lacus arcu eu elit. Aenean velit erat, vehicula eget lacinia ut, dignissim non tellus. Aliquam nec lacus mi, sed vestibulum nunc. Suspendisse potenti. Curabitur vitae sem turpis. Vestibulum sed neque eget dolor dapibus porttitor at sit amet sem. Fusce a turpis lorem. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae;' codeBlocks = [] lastType = null # This class represents a node in the markdown tree, and can render it to pdf class Node constructor: (tree) -> # special case for text nodes if typeof tree is 'string' @type = 'text' @text = tree return @type = tree.shift() @attrs = {} if typeof tree[0] is 'object' and not Array.isArray tree[0] @attrs = tree.shift() # parse sub nodes @content = while tree.length new Node tree.shift() switch @type when 'header' @type = 'h' + @attrs.level when 'code_block' # use code mirror to syntax highlight the code block code = @content[0].text @content = [] CodeMirror.runMode code, 'coffeescript', (text, style) => color = colors[style] or colors.default opts = color: color continued: text isnt '\n' @content.push new Node ['code', opts, text] @content[@content.length - 1]?.attrs.continued = false codeBlocks.push code when 'img' # images are used to generate inline example output # compiles the coffeescript to JS so it can be run # in the render method @type = 'example' code = codeBlocks[@attrs.alt] @code = coffee.compile code if code @height = +@attrs.title or 0 @style = styles[@type] or styles.para # sets the styles on the document for this node setStyle: (doc) -> if @style.font doc.font @style.font if @style.fontSize doc.fontSize @style.fontSize if @style.color or @attrs.color doc.fillColor @style.color or @attrs.color else doc.fillColor 'black' options = {} options.align = @style.align options.link = @attrs.href or false # override continued link options.continued = @attrs.continued if @attrs.continued? return options # renders this node and its subnodes to the document render: (doc, continued = false) -> switch @type when 'example' @setStyle doc # translate all points in the example code to # the current point in the document doc.moveDown() doc.save() doc.translate(doc.x, doc.y) x = doc.x y = doc.y doc.x = doc.y = 0 # run the example code with the document vm.runInNewContext @code, doc: doc lorem: lorem # restore points and styles y += doc.y doc.restore() doc.x = x doc.y = y + @height when 'hr' doc.addPage() else # loop through subnodes and render them for fragment, index in @content if fragment.type is 'text' # add a new page for each heading, unless it follows another heading if @type in ['h1', 'h2'] and lastType? and lastType isnt 'h1' doc.addPage() # set styles and whether this fragment is continued (for rich text wrapping) options = @setStyle doc options.continued ?= continued or index < @content.length - 1 # remove newlines unless this is code unless @type is 'code' fragment.text = fragment.text.replace(/[\r\n]\s*/g, ' ') doc.text fragment.text, options else fragment.render doc, index < @content.length - 1 and @type isnt 'bulletlist' lastType = @type if @style.padding doc.y += @style.padding # reads and renders a markdown/literate coffeescript file to the document render = (doc, filename) -> codeBlocks = [] tree = md.parse fs.readFileSync(filename, 'utf8') tree.shift() while tree.length node = new Node tree.shift() node.render(doc) # renders the title page of the guide renderTitlePage = (doc) -> title = 'PDFKit Guide' author = 'By Devon Govett' version = 'Version ' + require('../package.json').version doc.font 'fonts/AlegreyaSans-Light.ttf', 60 doc.y = doc.page.height / 2 - doc.currentLineHeight() doc.text title, align: 'center' w = doc.widthOfString(title) doc.fontSize 20 doc.y -= 10 doc.text author, align: 'center' indent: w - doc.widthOfString(author) doc.font styles.para.font, 10 doc.text version, align: 'center' indent: w - doc.widthOfString(version) doc.addPage() # render all sections of the guide and write the pdf file do -> doc = new PDFDocument doc.pipe fs.createWriteStream('guide.pdf') renderTitlePage doc render doc, 'getting_started.coffee.md' render doc, 'vector.coffee.md' render doc, 'text.coffee.md' render doc, 'images.coffee.md' render doc, 'annotations.coffee.md' doc.end()