Canvas/Canvas-like field editor, All browsers, mobile friendly

We need work done for part a our project. Given a pdf document, we create images of each page of the pdf and display it. From you, we need the following: Over these pages, we need to allow the user to add resizable and dragable rectangles. Inside these rectangles, the user will be able to add text. After a rectangle is created, moved or resized, we will use an ajax call to update the database with the rectangle’s width, height, and x,y coordinates of the top left corner. There should be a two icon buttons next to the rectangle, one to delete the rectangle and one to edit the text inside. Editing the text would bring up a dialog box and allow the user to change the text. When text changes, we will use an ajax call to update the database. Deleting the rectangle should bring up a confirmation dialog before deletion. Upon confirmation, we will use an ajax call to update the database. When the text changes, or when the rectangles are resized, the text inside must be made to fit. The font size (px) and line height should automatically change to best fit inside the rectangle. Font size and line height should be updated in the database via ajax call also. The user will be able to zoom in and out of the pdf page images. We need this to work across all browsers. It is necessary that it work on mobile devices (touch screens) Docusign has similar applications Ex: [login to view URL]|_____18 We’ve started using canvas but haven’t gotten good results with it. I don’t believe Docusign uses canvas in their application.