Saving the state of the application

[kolibril13]

At the moment, closing and reopening a notebook will delete all drawings from a canvas.
Also, re-executing a cell will delete all drawings from a canvas.

Current workaround: Copy the drawings to the clipboard, re-execute the cell and paste it into the fresh canvas.

Saving the state to the metadata of the notebook cell would be nice to have!
E.g. buttons for

• "Save tldraw state for this cell"
• "Load tldraw state for this cell"
• "Clear tldraw state for this cell"

Further idea: auto-saving the state for every interaction.

For reference: there is a similar button for ipywidgets

[TomToniq]

What about the result of TldrawMakeStaticSVG and similar functions? How would I get those to stick?

[kolibril13]

First version of saving and loading drawings is now possible withTldrawMakeStaticTldraw

But that's not the final solution.
Re-rendering the whole widget with interactive canvers after notebook restart is currently not possible, but that's a jupyterlab issue that might get solved at some point
jupyterlab/jupyterlab#15361

I also have the idea to convert drawings to static formats like TldrawMakeStaticSVG and TldrawMakeStaticPNG, I've made an issue for that here: #16