I'm excited about this feature. I augmented the box drawing feature for a small demo: https://twitter.com/R_Dimm/status/1305251396669800448

I don't know javascript but potentially this might serve as inspiration: https://github.com/andfanilo/streamlit-drawable-canvas they had a similar usecase but in python.

I'd be happy to take a stab at this feature someone can help specify the requirements.

Sorry I already kind of wrote this myself:
https://github.com/fonsp/disorganised-mess/blob/master/drawoncanvas.jl

🙂
let's turn it into a PlutoUI element after #3 is done

Super. Keep up the great work!

Great to see already something in the works..
I was prototyping about a 2D slider

@dpsanders asked for that once

Create another issue to track it?

yep!

Sorry I already kind of wrote this myself: https://github.com/fonsp/disorganised-mess/blob/master/drawoncanvas.jl

slightly_smiling_face let's turn it into a PlutoUI element after #3 is done

Hi @fonsp what's the scene on this issue? Is it just a matter of someone formalizing your code?

WIP at #234!

@fonsp this thread and examples have been helpful!
The only thing I cannot make to work is to draw an image on the canvas from julia. https://gist.github.com/RensDimmendaal/2cb0ada5750b00d703c3976df1716e14 has an example of an image from a URL, but I have the image in Julia as a regular matrix of RGB colors. How to send it to JS and draw?