Collaborative Whiteboard with React Canvas and SocketIO

Handle the mouse up event on the canvas to stop drawing, reset the action to null, and clear the selected element, preparing for drawing shapes like a rectangle.

Add a new line tool by introducing a line icon button, importing the line icon, updating tool types and Redux state, and implementing line drawing logic similar to the rectangle.

Create a line element on a collaborative whiteboard by handling mouse down, setting the selected element, and updating the Redux store with the new line coordinates.

Draw line on the canvas by updating its coordinates in the store. Add a line case to the draw function so the line renders for all users using rough canvas.

Fix a console error by adding the missing break in the update element’s switch case, enabling freehand drawing tool. The session demonstrates real-time collaboration and notes a future text tool.

Learn how to refactor the handle mouse down handler to add a new text writing action, update tool-type logic, and manage the selected element in the store.

Render a text area at the clicked location when writing, with 24px sans serif font, and blur updates the canvas via the elements array.

Fix the get context from null error by adding the canvas id, then draw text on the canvas and fix a jumping position in upcoming video.

Fixes a position bug in the get element at position logic by mapping elements to identify the element under the cursor and updating the cursor appearance accordingly.

Identify the element at the cursor position and select it. Use element-at-position logic to move or resize with the mouse.

Calculate offset on mousedown, set selected element with that offset, and update its position on move to enable moving or resizing in a collaborative whiteboard using react canvas and socketio.