[Feature Request] Web Worker support

[endlacer]

Hello all (and @Mawi137)
just a quick question. Is it possible to add Web Worker support?
I could try it myself but before I start implementing anything, I thought I ask if it is even wanted/doable.

Do you see any problems with it? I think I would start by adding a opt-in option to use webworkers, sounds good?

[Mawi137]

Hi there

Sound like a very good idea. The operations on the canvas are quite heavy so it would indeed be nice to offload that to a worker. I have no idea if that's possible or whether there are limitations though.

[Mawi137]

Just had a quick chat with ChatGPT and it seems like a worker cannot load the images itself, but by using OffscreenCanvas, it should be able to draw it on a canvas and then return the result of toBlob.

[endlacer]

I tried a bit but had problems with creating a webworker in the angular lib. Angular did not bundle the worker into dist and I had trouble doing it manually, so i gave up.
creating a web worker via angular cli does not work: see angular/angular-cli#15059

Also tried using OffscreenCanvas, but that did not have any impact on cropping/rotating speed..

[Mawi137]

Ok too bad. I think the only thing to gain from using a web worker is not blocking the UI.
Maybe WebAssembly is a solution to speed up the cropping.
Anyway, thanks for trying!