Working with Hex codes

[mswift42]

Are there any plans for adding support for hex format, specifically something like rgb::new(hex) ?

[Ogeon]

Nothing concrete at the moment, apart from #144 being at the other end of the pipeline, but there's not really any particular reason against it. Do you have any specific input format/type in mind? Like a string or a u32? Does the component order matter?

Also, just so it's not forgotten, if it's just for being able to input it in hex instead of decimal, it can always be broken up into u8 components:

let color: Srgb<u8> = Srgb::new(0xFF, 0x00, 0xFF);

[mswift42]

I need to parse hex color strings in format "#ff00dd" and convert that to rgb.

I can do the parsing / converting to rgb my self, I was just puzzled that working with hex colors wasn't more sought after.

[Ogeon]

Sounds like a FromStr implementation for Srgb<u8> would fulfill that need. Or maybe a more specific from_hex method. 🙂

[mswift42]

Yes, something like from_hex sounds great.

At the end of the day, hex is rgb, just written in a different notation.

The only problem is, you have to validate the input and "#fff" and "#ffffff" are the same thing.

[NickHu]

One issue is that you don't get an Eq instance for Srgb<u8>; should there be an impl for Rgb<S, T> when T: Eq? Does this hurt anything? I'm currently running in to this myself...

[Ogeon]

Oh, you are completely right! That must have been forgotten somewhere along the way. I'll report a separate issue for it, since this one is closed, and also make it a task to go through the other types and add it in there too. Just in case. Thanks for pointing it out!