Selection zone features

Hello, 

I 'am selling wallpaper on my e-shop. I need a wp plug-in which allows my clients add personnalized dimensions (to calculate properly the total price) and then move as they want a selection frame(wich follows the dimensions they gave) on the canvas to confirm the area they want to purchase. Is it possible with fancy product designer? 

Here are a few images to illustrate my explanations

Thank you for your support =)