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

![start](https://raw.githubusercontent.com/cracker0dks/whiteboard/master/doc/start.png)

## Demowhiteboard ##
[HERE](https://cloud13.de/testwhiteboard/) (Reset every night)

## Some Features
* Shows remote user cursors while drawing
* Undo function for each user
* Drag+Drop / Copy+Paste Images to Whiteboard from PC and Browsers
* Resize, Move & Draw Images to Canvas or Background
* Write text
* 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)
* Indicator that shows the smallest screen participating
* Keybindings for ALL the functions
* 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 `node server.js`
5. Surf to http://YOURIP:8080

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

## Default keyboard shortcuts
Use keyboard shortcuts to become more productive while using Whiteboard.

They are especially useful if you work with interactive displays such as XP-Pen Artist, Huion Kamvas and Wacom Cintiq. These devices have quick buttons (6-8 buttons and scrolling). By default, the buttons on these displays are mapped to standard Photoshop keyboard shortcuts. Keys can be configured to function effectively in other software.

The following are predefined shortcuts that you can override in the file [/public/js/keybinds.js](https://github.com/cracker0dks/whiteboard/blob/master/public/js/keybinds.js)

Result | Windows and Linux | macOS
------ | -------------------- | -------
Clear the whiteboard | Ctrl + Shift + Z | Command + Shift + Z
Undo your last step | Ctrl + Z | Command + Z
Select an area | Ctrl + X | Command + X
Take the mouse | Ctrl + M | Command + M
Take the pen | Ctrl + P | Command + P
Draw a line | Ctrl + L | Command + L
Draw a rectangle | Ctrl + R | Command + R
Draw a circle | Ctrl + C | Command + C
Toggle between line, rectangle and circle | Ctrl + Shift + F | Command + Shift + F
Toggle between pen and eraser | Ctrl + Shift + X | Command + Shift + X
Toggle between main clolors (black, blue, green, yellow and red) | Ctrl + Shift + R | Command + Shift + R
Write text | Ctrl + A | Command + A
Take the eraser | Ctrl + E | Command + E
Increase thickness | Ctrl + Up Arrow | Command + Up Arrow
Decrease thickness | Ctrl + Down Arrow | Command + Down Arrow
Colorpicker | Ctrl + Shift + C | Command + Shift + C
Set black color | Ctrl + Shift + 1 | Command + Shift + 1
Set blue color | Ctrl + Shift + 2 | Command + Shift + 2
Set green color | Ctrl + Shift + 3 | Command + Shift + 3
Set yellow color | Ctrl + Shift + 4 | Command + Shift + 4
Set red color | Ctrl + Shift + 5 | Command + Shift + 5
Save whiteboard as image | Ctrl + S | Command + S
Save whiteboard as JSON | Ctrl + Shift + K | Command + Shift + K
Save whiteboard to WebDav | Ctrl + Shift + I (i) | Command + Shift + I (i)
Load saved JSON to whiteboard | Ctrl + Shift + J | Command + Shift + J
Share whiteboard | Ctrl + Shift + S | Command + Shift + S
Hide or show toolbar | Tab | Tab
Move selected object up | Up Arrow | Up Arrow
Move selected object down | Down Arrow | Down Arrow
Move selected object left | Left Arrow | Left Arrow
Move selected object right | Right Arrow | Right Arrow
Drop object | Ctrl + Enter | Command + Enter
Add Image to backgroud | Shift + Enter | Shift + Enter
Cancel all actions | Escape | Escape
Delete selected object | Delete | Delete

## URL Parameters
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
* title => Change the name of the Browser Tab
* randomid => if set to true, a random whiteboardId will be generated if not given aswell

## Security - AccessToken (Optional)
To prevent clients who might know or guess the base URL from abusing the server to upload files and stuff..., you can set an accesstoken at server start.

<b>Server (Without docker):</b> `node server.js --accesstoken="mySecToken"`

<b>Server (With docker):</b> `docker run -d -e accesstoken="mySecToken" -p 8080:8080 rofl256/whiteboard`

Then set the same token on the client side as well:

<b>Client (With and without docker):</b> `http://YOURIP:8080?accesstoken=mySecToken&whiteboardid=MYID&username=MYNAME`

Done!

## WebDAV (Optional)
This function allows your users to save the whiteboard directly to a webdav server (Nextcloud) as image without downloading it.

To enable it:

<b>Server (Without docker):</b> `node server.js --webdav=true`

<b>Server (With docker):</b> `docker run -d -e webdav=true -p 8080:8080 rofl256/whiteboard`

Then set the same parameter on the client side as well:

<b>Client (With and without docker):</b> `http://YOURIP:8080?webdav=true&whiteboardid=MYID&username=MYNAME`

Refresh the site and You will notice an extra save button in the top panel. Set your WebDav Parameters, and you are good to go!

Note: For the most owncloud/nextcloud setups you have to set the WebDav-Server URL to: https://YourDomain.tl/remote.php/webdav/

Done!


## Things you may want to know
* Whiteboards are gone if you restart the Server, so keep that in mind (or save your whiteboard)
* You shoud be able to customize the layout without ever toutching the whiteboard.js (take a look at index.html & main.js)

## All server start parameters (also docker)
* accesstoken => take a look at "Security - AccessToken" for a full explanation
* disablesmallestscreen => set this to "true" if you don't want show the "smallest screen" indicator (A dotted gray line) to the users
* webdav => Enable the function to save to a webdav-server (Must also be enabled on the client; Take a look at the webdav section)

## ToDo
* Make undo function more reliable on texts

## 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" (app) on your Nextcloud
2. Add a 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
![start](https://raw.githubusercontent.com/cracker0dks/whiteboard/master/doc/iconPrev.jpg)

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 ___
