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

  • Doods@infosec.pubOP
    5·
    15 days ago

    This is embarrassing, but when was it not?

    I have to add a “.” before the name of a css class, I must learn my tools.

      • Doods@infosec.pubOP
        1·
        14 days ago

        you can set a CSS name, wich isn’t a CSS class and doesn’t use a leading dot.

        Yeah that’s what I’ve been using all along.

    • zlatko@programming.dev
      3·
      15 days ago

      I mean, it is not embarrassing for you. In the browser, the CSS’s “native platform”, you add classes, via the JavaScript API, without the dot. It’s not a stupid assumption.

      To have to add the dot in the CSS class name seems a bit of an oversight in the gtkrs API.

      • d_k_bo@feddit.org
        1·
        15 days ago

        I think you understood their comment wrong. In your code (e.g. label.add_css_class("green");) you don’t use a dot, but in the CSS stylesheet. It works the same as with HTML/JS/CSS.

      • zlatko@programming.dev
        1·
        2 days ago

        (sorry for the late response, I have to get in the habit of checking my Lemmy account)

        No, I get that - a stylesheet denotes a class by having a dot. A JavaScript API for adding a CSS class omits this redundancy.

        I was saying that the author might not be wrong to want to avoid the redundancy in rust example as well (since it explicitly mentions CSS classes).