/* It seems that I have to base64-encode the font file and add it to dataURI. * https://stackoverflow.com/questions/41571622/how-to-include-css-style-when-converting-svg-to-png * https://www.filamentgroup.com/lab/font-loading.html * * the google Font URL below is a text file which refers to a font file(?) like * http://fonts.gstatic.com/s/sourcesanspro/v11/6xK3dSBYKcSV-LCoeQqfX1RYOo3qNa7lqDY.woff2 * So, I guess I have to encode this .woff2. * I used the following service to get dataURI / base64-encoded font file for "Source Sans Pro". * https://amio.github.io/embedded-google-fonts/ * * This file is loaded through AJAX call (in init()) and the text/data is saved as a variable * which will be added to