How do you set alternating colors in the list of topics

[Greg11 (It Craftsmen Club)]

How do you set alternating colors in the list of topics? It helps usability a lot, but it is all white by default.

example:

[fefrei (Felix Freiberger)]

You can achieve this with a CSS customization. Here’s an example to get you started:

.topic-list-item:nth-child(even) {
    background-color: #EEE;
}

.topic-list-item:nth-child(odd) {
    background-color: #FFF;
}

Here’s how this looks on Meta:

[Silvanus]

And for those who are looking to change the background of topics, here’s the solution:

div.topic-post:nth-child(odd), div.small-action:nth-child(odd) { background-color: #FAFBFF; } div.topic-post:nth-child(even), div.small-action:nth-child(even) { background-color: #F6F6FF; }

[Falco]

And here’s the discussion about why it isn’t the default anymore:

https://meta.discourse.org/t/the-death-of-the-grey-no-more-tiger-striping-rows-by-default/28664?u=falco

[erlend_sh (Erlend Sogge Heggen)]

@fefrei Care to extract this into a super simple theme component?

@Silvanus same for your topic tweak. I was thinking maybe we’d just include it in the “tiger striping component” but commented out by default, but we might as well make it a component of its own as they really are two completely separate pieces of styling.

[fefrei (Felix Freiberger)]

@erlend_sh

Care to extract this into a super simple theme component?

Sure!
Can you tell me why I cannot use $primary-low in the theme component? It’s used all over the place in core (e.g. as the background color of buttons), and I think it’s a good color for the darkened rows, but it’s undefined:

Error: Undefined variable: "$primary-low".
        on line 2 of theme_field.scss
>>     background-color: $primary-low;
   ----------------------^

[Johani (Joe)]

I’ve run into the same problem. What solved it for me was adding this at the top:

@import "common/foundation/variables";

And then you can use those colors.

That’s the short story, the long story is here:

Use Discourse Core Variables in your Theme

Discourse is incredibly customizable! The goal of this topic is to show you how make use of all the amazing options that are available to you as a theme developer. You know… so that you don’t have to reinvent the wheel Variables? What variables? Variables cover a large number of things, from font sizes to colors to z-index values. You can use and override the vast majority of variables in your theme editor. Colors There are many colors available for you to use or override in your th…

[fefrei (Felix Freiberger)]

That did it, thanks

Here you go:

https://github.com/fefrei/discourse-tiger-stripes

[codinghorror (Jeff Atwood)]

Why not stripes? I guess stripes are less… black and white?

[fefrei (Felix Freiberger)]

@codinghorror

I guess stripes are less… black and white?

Sorry, I don’t follow. Can you elaborate?

[pqMMA (Chris Palmquist)]

How would you do this on a topic detail page for alternating replies?

[fefrei (Felix Freiberger)]

That it somewhat more involved. You can try applying the same principle to the post-stream class, but this not only contains replies, but also “gaps”, like the 2 years later above your post, so they also count and may be affected.

[rahim123]

¿Cuál sería la mejor manera de implementar esto con diferentes colores según si se está utilizando el tema claro u oscuro?

[Canapin (Coin-coin le Canapin)]

Este tema puede responder a tu pregunta :

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[ToyKeeper]

@rahim123

¿Cuál sería la mejor manera de implementar esto con diferentes colores dependiendo de si se está utilizando el tema claro u oscuro?

Hay al menos dos métodos que funcionan:

• Usar diferentes colores para diferentes temas.
• Sombrear las filas con un gris medio translúcido, para que funcione tanto en fondos claros como oscuros. Por ejemplo, dar a las filas nth-child(odd) un color como background: #80808040;.

Si ayuda, publiqué una anulación de hoja de estilos que demuestra el primer método… estableciendo colores por tema. Para más detalles, busca en style.css cualquier parte que contenga nth-child.

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Aquí tienes un ejemplo de cómo se ve en un tema claro:

… y cada tema tiene sus propias definiciones de color, por lo que las filas de la tabla se adaptan a cada tema.