is there any way to animate between two textstyles?

How would you expect this to work across completely different font families, multiline texts, etc?

I would like to do something like scale down/up based on a state. I m trying to use

updateTransition

. Probably I need to rewrite the

animateDp

and have something similar but for sp, right? Additinionally, i think it woul be nice to have something similar but for padding values (

animatePaddingValues

). Now, I call 4 times the

animateDp

to update the padding values.

There's way more to

TextStyle

than just font size

of course! But most of these values could be animated separately. So I would expect to have a transition from these values to the values that are declared in another textstyle

That's my question though. How do you animate from italic to bold? From monospace to non monospace (different shapes of characters)? How do you animate a multi-line text where switching the font results in a different number of lines as words shift across lines?

To be honest, I do not know and possibly this is hard to implement. What I would like to achieve is something similar with autosizing textview. So, I do not want to bother with different fonts, etc. This autosizing needs to be implemented based on a gesture. Probably, I could do it by defining every animated value by hand, but this seems counterproductive

Do you have a video example of what you'd like to achieve?

I'd love to see a mock for the autosizing textview that you have in mind as well, if you don't mind sharing. 🙂 Maybe it's a use case that we could support if we could understand it better.

@Anastasia [G] fyi

I made a poc. Indeed I feel that is not an eye-catching animation. Additionally, I think that I have to write a lot of boilerplate to achieve it :s

This looks kind of like a shared element case. Given that we know the initial size and can look ahead for target size of the text layout, I wonder if there's anything we can do with that additional info to reduce the performance cost.

Thank you for you response! I ll give crossfade a try

Also fyi variable fonts are a lot more friendly to animating between styles, but android/compose support for them is pretty limited still and most fonts don't support it anyway