I'm developing a website where people can design(customize) a product. Something similar to Vista Print where you can design a business card or a banner. After the customer has designed the product I need to capture a screenshot of the finished design. I've seen scripts such as html2canvas but they base the screenshot on the DOM which only shows what the webpage looked like before the customer started to drag and drop objects in the design process.
I need a way to capture what the product looks like when the customer clicks the add to basket button.