Convert points to pixels when calculating width

Author: Flamenco

plugins/context2d.js

@@ -1251,6 +1251,8 @@
                 getWidth: function () {
                     var fontSize = pdf.internal.getFontSize();
                     var txtWidth = pdf.getStringUnitWidth(text) * fontSize / pdf.internal.scaleFactor;
+                    // Convert points to pixels
+                    txtWidth *= 1.3333;
                     return txtWidth;
                 },