This project is a whiteboard application where users can create and share whiteboards with each other.
The Backend is .NET Core uses SignalR for the socket and DartSignalR for generated the signalr client dart class.
The Frontend is flutter with MVVM as design pattern and use these packages:
- reactable: a reactive state management package.
- signalr_core: for connecting to the socket.
The backend contains:
- Board: The board information with all paths in it.
- Path: The path that user draw on the board with the pen color and width and all the points.
- Point: the points of a path.
The hub that connect all users to each other. have all the methods that user can call.
- AddBoard: a method to create a new board and notify all users.
- RemoveBoard: a method to remove a board and notify all users.
- GetBoards: a method to get all available boards.
- GetBoard: a method to get a board info by id.
- AddPath: a method to add a new path to a board and notify all users.
- AddPoint: a method to add a new point to a path and notify all users.
- UserUpdate: If user joins or leaves a board, the hub will send the update to all users.
A project that generate the dart code for the dart client from the backend hub class. Read more about it here.
This page is the first page in the app where the app will try to connect to the server. When the app is connected, it will go to the Boards page. otherwise, it will show the error message.
This page will show all available boards to join and the board information
Board information includes:
- Board name
- Board creation time.
- How many users are currently in the board.
From this page, users can create a new board, delete a board or join one.
In this page the user can draw on the whiteboard. change the color and the size of the pen.