UI elements sizing in Modena.css

[Pedro Duque Vieira]

Andy, if I understand the suggestion correctly, you want to set the Modena
sizes using variables that can be easily overridden. To that effect
variables must first be able to hold numeric values as, as it stands today
JavaFX only allows colors to be used for CSS variables.
So, you're also suggesting adding the ability for CSS variables to define
inset values, is that correct?

I think that's a good idea. I would, however, generalize that to allow CSS
variables to hold numeric values that could be used anywhere. Or at least,
starting to pave the ground for that.

I would go even further and start to pave ground to add the CSS
variable spec into javafx css:
https://codersblock.com/blog/what-can-you-put-in-a-css-variable/

Why use the css web spec? Because of the following reasons:
1 - Designers already know how to work with the css web spec
2 - there are already many tools available that work with the css web spec
3 - there are already many examples on the web using CSS so developers can
just copy paste those examples
4 - Developers coming from the web can easily start using javafx css with
no friction and no need to learn it

Thanks





On Tue, Jul 9, 2024 at 9:04 PM Andy Goryachev <andy.goryachev at oracle.com>
wrote:

> Since we touched the modena.css, I would like to ask the group's opinion
> on whether we should fix the way modena.css sizes UI elements.  Please see
> https://bugs.openjdk.org/browse/JDK-8314683 for reference, where changing
> the font size also unexpectedly changed the scrollbar.
>
>
>
> What do you think about introducing a set of variables similar to -fx-base
> but for sizing/padding, placing them early on to depend on the font size in
> the .root selector instead of the font in the actual control?  Something
> along the lines of
>
>
>
> .root {
>
> -fx-size-3px: 0.25em;
>
> ...
>
> }
>
>
>
> .scroll-bar:horizontal > .increment-button > .increment-arrow {
>
>     -fx-padding: -fx-size-3px -fx-size-3px -fx-size-3px -fx-size-3px;
>
> }
>
>
>
> instead of
>
>
>
> .scroll-bar:horizontal > .increment-button > .increment-arrow {
>
>     -fx-padding: 0.333em 0.167em 0.333em 0.167em; /* 4 2 4 2 */
>
> }
>
>
>
> This way we still permit the UI components resize with the main font,
> while keeping the sizes of all the control surfaces consistent?
>
>
>
> This will require a trivial change in InsetsConverter.
>
>
>
> What do you think?
>
>
>
> -andy
>


-- 
Pedro Duque Vieira (Duke) - https://www.pixelduke.com
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