Add script with UI as a custom parameter (filter)

1

Hi,

I’m at the beginning of a project that’s going to need a some python to generate instances. The idea is to use a typeface already designed and deform it using the transform matrix to deform it in different ways in different instances.

So here comes the question: since I would like to write a script with UI (like Roughenizer) and copy its different parameters to different instances, how would you add this “new” filter? I read this article to understand the logic of custom parameters and there’s this line of text:

You can also enter the property name with the keyboard. The property will remain grey until Glyphs recognizes it as a registered parameter name.

Should I access the customInstanceParameters.plist and add it there? In that case, how does each filter which value is linked to which one from the UI?

Thanks!

2

Please NEVER edit the customInstanceParameters.plist. It will break the app. And it will not change the behaviour of Glyphs.

So you like to add a “Filter” with a script?
That can be done like this:

parameter = GSCustomParameter("Filter", "Transform something")
Font.instances[0].customParameters.append(parameter)
1 Like
3

Thanks for the advise, Georg.

I don’t actually want to add a Filter with a script. I would like to creat a new filter I could add like a custom parameter/filter just like round corners or Roughenizer do. I was thinking about designing a UI like these filters but with different parameters that I could paste as a filter in the instances.

Thanks.

4

Then you need to build a plugin that contains the filter: https://github.com/schriftgestalt/GlyphsSDK/tree/master/Python%20Templates

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5

Oh, great. I didn’t remember there’s the option for this kind of filters in the SDK.

Thanks, Georg!

6

I did it the way you said and it did. It’s great.