added pdf-images.js example

examples/pdf-images.js

@@ -0,0 +1,40 @@
+
+var Canvas = require('../')
+  , Image = Canvas.Image
+  , canvas = new Canvas(500, 500, 'pdf')
+  , ctx = canvas.getContext('2d')
+  , fs = require('fs');
+
+var x, y;
+
+function reset() {
+  x = 50;
+  y = 80;
+}
+
+function h1(str) {
+  ctx.font = '22px Helvetica';
+  ctx.fillText(str, x, y);
+}
+
+function p(str) {
+  ctx.font = '10px Arial';
+  ctx.fillText(str, x, y += 20);
+}
+
+function img(src) {
+  var img = new Image;
+  img.src = src;
+  ctx.drawImage(img, x, y += 20);
+  y += img.height;
+}
+
+reset();
+h1('PDF image demo');
+p('This is an image embedded in a PDF');
+img('examples/images/squid.png');
+p('Figure 1.0 - Some squid thing');
+ctx.nextPage();
+
+fs.writeFile('out.pdf', canvas.toBuffer());
+console.log('created out.pdf');