Fabricjs Overlay for OpenSeadragon

An OpenSeadragon plugin that adds Fabric.js overlay capability.

Compatible with OpenSeadragon 2.0.0 or greater.

Documentation

To use, include the openseadragon-fabricjs-overlay.js and fabric.adapted.js file after openseadragon.js on your web page.

To add fabricjs overlay capability to your OpenSeadragon Viewer, call fabricjsOverlay() on it. This will return a new object with the following methods:

• fabricCanvas(): Returns fabricjs canvas that you can add elements to
• resize(): If your viewer changes size, you'll need to resize the fabricjs overlay by calling this method.

See demo or demo.html in github repository for an example of it in use.