https://github.com/moethu/paintchat

a digital chalkboard written in go
https://github.com/moethu/paintchat

golang websocket whiteboard

Last synced: about 19 hours ago
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a digital chalkboard written in go

• Host: GitHub
• URL: https://github.com/moethu/paintchat
• Owner: moethu
• License: apache-2.0
• Created: 2021-01-24T12:49:50.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2021-02-05T17:38:28.000Z (about 4 years ago)
• Last Synced: 2024-12-19T23:15:42.860Z (about 2 months ago)
• Topics: golang, websocket, whiteboard
• Language: JavaScript
• Homepage: https://paint-chat.com
• Size: 861 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# paintchat

a simple digital chalkboard written in go.

![](https://raw.githubusercontent.com/moethu/paintchat/main/static/screenshot.png)

the server is similar to a chat server with rooms implemented using go channels. each client is streaming its drawing actions to the server throgh a websocket. the server then broadcasts changes to all other clients in the same room. As long as a client stays connected all its streamed data remains buffered at the server. If a new client connects it first gets a random name and color assigned and then receives all drawing history form all other currently connected clients. Once a user leaves a room all her drawing data will be lost.

### Feature list

- all users enter a public board when opening the root url

- create private boards

- copy board url on click

- three different pencil sizes

- random name and color assignment

- erase all what you've been drawing so far

- save drawing as png

### Dependencies

All dependencies are installed using go modules.

### Build & run

simply run `go build .` or `go run` to build.

### Contribute

You are welcome to open pull-request or simply report feature requests or issues.