Estrobeda

Found a solution.

I'm definetly not a "pro" user of affinity designer so it would probably be obvious to most but the solution was:

There's a "fill" tool in affinity designer which I thought was the typical fill with solid color tool. Turns out that you can fill with gradients, bitmaps, solid colors etc.
When I was searching for a solution for this, all the suggestions I found was "Go to layer -> new fill layer". The problem is that, that solution is for Affinity Photo, not Affinity Designer, Affinity Designer doesn't seem to have that option there at all which caused a confusion.

So then you might ask, why just not edit it in photo?
Well, I do have Affinity photo but I don't want to install a whole program for one small thing like that and I bet there's those who don't have Affinity Photo.

Anyway, by using the fill tool on a shape, I could specify the effects and patterns etc that I wanted and then choose "Right Click -> Create new style".

Well, true, still a lot better than nothing and perhaps easier to develop and maintain than a full port if that's the issue.

@mzo
Welcome to the Serif Affinity forums  Thanks for your contribution. Yes we have considered that and that is one obvious good reason why we are not saying "never", just not now.

I can't wait, awsome suggestion =D

Hi, it would be great if you add CSS export feature like CSS Hat (https://csshat.com).   I think that every HTML & CSS coder will buy your Affinity Designer and stop using expensive Photoshop :-)   Thanks.  
Petr

We agree and will be adding this over time.

I think that Affinity Designer needs to be able to create animations of transformation and transition of an interface and more generally the UI/UX prototyping.
 
Thanks. I love this software.

As a programmer I doubt im the only one who'd enjoy having the power and complexity of Affinity Photo as a library for image editing programically. Say making a image classification network and using this for preprocessing. You already have most of this made as its highly likely your GUI just calls methods from some proprietary library you bundle with your software, so why not just document it and let ppl that pay for your products use it in our code? of course have a TOS that dont allow us to make another photo editor using your library but it would be nice to have for doing preproccessing or other fun projects. Like a discord bot to apply some fun visual effects to images users upload.

If you ask me this would give you a new market to advertise to, the developer market, a market that is lacking in comptitision for minimal work.  
 
Sorry for my bad english Im dyslextic