whiteboard

This is a lightweight NodeJS collaborative Whiteboard/Sketchboard witch can easily be customized...

Some Features

• Showing remote user cursors while drawing
• Undo function for each user (strg+z as well)
• Drag & Drop Images to Whiteboard from PC and Browsers
• Copy & Paste Images from Clipboard to the Whiteboard
• Write text
• Resize, Move & Draw Images to Canvas or Background
• Save Whiteboard to Image and JSON
• Draw angle lines by pressing "shift" while drawing (with line tool)
• Draw square by pressing "shift" while drawing (with rectangle tool)
• Working on PC, Tablet & Mobile

Install the App

You can run this app with and without docker

Without Docker

1. install the latest NodeJs
2. Clone the app
3. Run npm i inside the folder
4. Run npm start
5. Surf to http://YOURIP:8080

With Docker

1. docker run -d -p 8080:8080 rofl256/whiteboard
2. Surf to http://YOURIP:8080

API

Call your site with GET parameters to change the WhiteboardID or the Username

http://YOURIP:8080?whiteboardid=MYID&username=MYNAME

• whiteboardid => All people with the same ID are drawing on the same board
• username => The name witch is showing to others while drawing

Things you may want to know

• Whiteboards are gone if you restart the Server, so keep that in mind (or save your whiteboard)
• This is just a sample layout to show the functions available
• You shoud be able to customize without ever toutching the whiteboard.js (take a look at index.html & main.js)

ToDo

• Make undo function more reliable on texts
• Add more callbacks for errors and things ...

Nginx Reverse Proxy configuration

Add this to your server part:

    location /whiteboard/ {
        proxy_set_header HOST $host;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection upgrade;
        proxy_pass http://YOURIP:8080/;
    }

To run it at /whiteboard. Don't forget to change -> YOURIP!

Nextcloud integration

1. Install this app on your server
2. Enable and go to "external sites" on your Nextcloud
3. Add Link to your server: https://YOURIP/whiteboard/?whiteboardid=WHITEBOARDNAME&username={uid} You can give each group its own whiteboard by changeing the WHITEBOARDNAME in the URL if you want.

Note: You might have to serve the app with https (If your nextcloud server runs https). To do so, its recommend to run this app behind a reverse proxy. (as shown above)

(Optional) Set whiteboard icon in nextcloud

Upload both icons present at /doc/nextcloud_icons/ to your nextcloud at the "external sites" admin section. Then set it as symbol on your link.

___ MIT License ___