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gtk-rs change widget appearance at runtime. (infosec.pub)

submitted 2 weeks ago* (last edited 2 weeks ago) by Doods@infosec.pub to c/rust@programming.dev

11 comments fedilink hide all child comments

It might be lack of sleep, but I can't figure this out.

I have a Label, and I want its text to be red when it represents an error, and I want it be green when it represent "good to go".

I found search result for C and maybe a solution for Python, but nothing for Rust.

I tried manually setting the css-classes property and running queue_draw(); it didn't work.

I can have a gtk::Box or a Frame that I place where the Label should go, then declare two Labels, and use set_child() to switch between them, but that seems like an ugly solution.

Do you have a solution?

SOLVED:

I have to add a "." before declaring a CSS "thing" for it to be considered a class.

Ex:

.overlay {
        background: rgba(60, 60, 60, 1);
        font-size: 25px;
}

instead of:

overlay {
        background: rgba(60, 60, 60, 1);
        font-size: 25px;)
}

Just use label.add_css_class(), label.remove_css_class() or label.set_css_classes() and make sure to properly load your CSS style sheets,

Source: the comment of d_k_bo@feddit.org

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[–] Doods@infosec.pub 2 points 2 weeks ago (1 children)

Before anyone suggests another library:

Iced and Egui both can't handle Arabic, which is a deal breaker.
Iced takes forever to compile and iterate, maybe that'll be fixed with dynamic linking.
Relm: I didn't know it existed before I started this project.
Qt bindings: IDK I forgot Qt existed, I was always more of GNOME* guy.
I am already pretty deep into this project, and don't want to learn something else for now.

* GNU Network Object something Environment

[–] BB_C@programming.dev 0 points 2 weeks ago (1 children)

Use libcosmic 😑

No, but seriously.. skip to the end.

Iced and Egui both can’t handle Arabic, which is a deal breaker.

Iced can handle Arabic shaping-wise when cosmic-text is used, but it can't handle the direction (yet). If you only need it for the interface, a shit workaround would be to prefix all text with an RLM (RIGHT-TO-LEFT Mark). This would left-align all text of course.

Iced takes forever to compile and iterate, maybe that’ll be fixed with dynamic linking.

Fast iteration is already fixed by using cranelift in your release-dev profile (or whatever you want to call it), and mold as a linker. The binary will be slower, but iteration will be much much faster.

Okay, something helpful instead: Did you try asking in the rust:gnome.org matrix room mentioned in the project page?

[–] Doods@infosec.pub 5 points 2 weeks ago

If you only need it for the interface, a shit workaround would be to prefix all text with an RLM (RIGHT-TO-LEFT Mark).

Unfortunately no, I expect users to enter Arabic text as well.

Fast iteration is already fixed by using cranelift in your release-dev profile (or whatever you want to call it), and mold as a linker.

Maybe, I didn't try that before, but I don't expect Cranelift to match the speeds gtk-rs is currently giving me; Cranelift also doesn't solve the problem of rust-analyzer acting crazy.

Okay, something helpful instead: Did you try asking in the rust:gnome.org matrix room mentioned in the project page?

No, I prefer public posts to prevent effort duplication, so much so that my mind started filtering out such things on project pages, but thanks for reminding me.