Use pdfkit instead of canvas

badge.js

@@ -2,18 +2,7 @@ var fs = require('fs');
 var path = require('path');
 var SVGO = require('svgo');
 var dot = require('dot');
-
-// Initialize what will be used for automatic text measurement.
-var Canvas = require('canvas');
-var canvasElement = new Canvas(0, 0);   // Width and height are irrelevant.
-var canvasContext = canvasElement.getContext('2d');
-var CanvasFont = Canvas.Font;
-try {
-  var opensans = new CanvasFont('Verdana',
-      path.join(__dirname, 'Verdana.ttf'));
-  canvasContext.addFont(opensans);
-} catch(e) {}
-canvasContext.font = '11px Verdana, "DejaVu Sans"';
+var measureTextWidth = require('./measure-text');
 
 // cache templates.
 var templates = {};
@@ -75,9 +64,9 @@ function makeImage(data, cb) {
     data.logoPadding = 0;
   }
   data.widths = [
-    (canvasContext.measureText(data.text[0]).width|0) + 10
+    (measureTextWidth(data.text[0])|0) + 10
       + data.logoWidth + data.logoPadding,
-    (canvasContext.measureText(data.text[1]).width|0) + 10,
+    (measureTextWidth(data.text[1])|0) + 10,
   ];
   if (data.links === undefined) {
     data.links = ['', ''];

measure-text.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var path = require('path');
+var fs = require('fs');
+var PDFDocument = require('pdfkit');
+
+var doc = (new PDFDocument({size:'A4', layout:'landscape'}));
+try {
+  doc = doc.font(path.join(__dirname, 'Verdana.ttf'));
+} catch (ex) {
+  doc = doc.font('Helvetica-Bold')
+  console.warn('Could not load font file "Verdana.ttf", text widths will therefore be approximate', ex);
+}
+doc = doc.fontSize(11);
+
+module.exports = measure;
+function measure(str) {
+  return doc.widthOfString(str);
+}

package.json

@@ -18,7 +18,7 @@
   "dependencies": {
     "dot": "~1.0.3",
     "svgo": "~0.5.1",
-    "canvas": "~1.1.2",
+    "pdfkit": "~0.7.1",
     "phantomjs": "~1.9.2-6",
     "es6-promise": "~2.1.0",
     "request": "~2.55.0",