---
tags: ULA-EN
title: Styling | ULA
---

# Styling :art:

At the beginning app contains all styles out of the box. And you haven't to style anything if you don't want. But, if you want... every piece of an app is fully customizable via CSS like syntax (jsx).

If you also know CSS (brother of HTML) it will be too easy for you. If you don't, we hope, it is still easy, just you should change me code at a beginner level. But don't worry, all styles have also written, and you should just copy/paste and rewrite some of them.

There is 3 block of styles in the app: general, layout and contentType.

## general
contains things like font family, sizes for different level of headers, alignment, writing direction, colors... All things that you probably want to pass through the app, and make consistent, maintain continuity.
:::warning
<small>:abcd: code: [styles/general.js](https://github.com/Aparus/ULA/blob/master/src/styles/general.js)</small>
:::

## layout
related to things like main (home) page, drawer (table of content), screen header, navigation buttons etc...
:::warning
<small>:abcd: code: [styles/layout.js](https://github.com/Aparus/ULA/blob/master/src/styles/layout.js)</small>
:::

## contentType
at the beginning we have 4 default types:
- file card
- rich text
- rich media
- exercise

and you can create on top of them as much types as you need.
:::warning
<small>:page_facing_up: for more info: [Content types](/ReN1s8RlQAe5nYpBZDb2pA#Custom-types)</small>
:::
:::warning
<small>:abcd: code: [styles/contentType.js](https://github.com/Aparus/ULA/blob/master/src/styles/contentType.js)</small>
:::
:::danger
⚠ Don't change files linked above. Technically it works. But after [update](/o8yy7ywPQw2qofS8NNRbCQ) the app, all changes will be lost.
:::
## How to change?

To change any style, copy it from code linked above, and put it to `/content/styles` folder, to the file with the same name as the style source.

### general

For example, you are working on arabic app, and you want to apply new font to any text in the app, and make it bigger and with right to left direction. Then you should look at [styles/general.js](https://github.com/Aparus/ULA/blob/master/src/styles/general.js) to know whitch properties it has, and put to `/content/styles/general.js`:

export default {
    basicAlignItems: 'flex-end',
    basicWritingDirection: 'rtl',
    basicFontFamily: 'ScheherazadeNew-Regular',
    basicFontSize: 18,
    translation: {
        default: {
            fontFamily: 'Inter-Variable',
            writingDirection: 'ltl',
            textAlign: 'right',
            fontSize: 14
        }
    }
}

Now you have beautifull arabic font and relevant alignment and writing direction.

<center>
<img src="https://i.imgur.com/TFRQUzU.png" style="width:200px" />
</center>

### contentType

If you want to change color of italic text in `richText` , you should go to [styles/contentType.js](https://github.com/Aparus/ULA/blob/master/src/styles/contentType.js) and understand that this style is connected to `richText: {em}`. Then you put to `content/styles/contentType`:

export default {
    richText: {
        em: {
            color: 'orange'
        }
    }
}

Now you have orange cursive:
<center>
<img src="https://i.imgur.com/XLiw5fz.png" style="width:200px" />
</center>

### layout

You are working on app, where headers of chapters are numbers. You don't need their translation anywhere. Then you should change `/content/styles/layout.js`:

export default {
    drawer: {
        listItemText: {
            textAlign: 'center',
        },
        listItemTranslation: {
            display: 'none'
        }
    },

    screenHeader: {
        chapterTitleTr: {
            display: 'none'
        },
        subchapterTitleTr: {
            display: 'none'
        }
    }
}

And put to `conent/images/` two images: `titleDecorLeft.png`, `titleDecorRigth.png`, then you get such a drawer:
<center>
<img src="https://i.imgur.com/CCXpUdK.png" style="width:200px" />
</center>

## Fonts

To use custom fonts put files `.otf` or `.ttf` to `/content/fonts` folder. Then you can use them in styles by their file names.

:::warning
<small>:page_facing_up: for more info: [expo/supported-font-formats](/https://docs.expo.io/guides/using-custom-fonts/#supported-font-formats)</small>
:::

Custom fonts are especially important when you work with non-latin fonts and want to display them predictable on any device. Otherwice device will seek for existing in system fonts, and if don't find them, user will see empty rectangles or ugly letters.

In example above with [content/styles/general.js](https://hackmd.io/QjDcaEItSWKoSrukt9D24g#general1) we used two custom fonts: `ScheherazadeNew-Regular` and `Inter-Variable`. That means that before doing that, we put into `content/fonts` two files:
* `ScheherazadeNew-Regular.ttf`
* `Inter-Variable.ttf`

:::info
Notice, that `/content/styles` folder is in a different repository than the main app. This is by design so that your styles don't disappear after an update.
<br />
:::warning
<small>:page_facing_up: for more info: [Update](/o8yy7ywPQw2qofS8NNRbCQ)</small>
:::

{%hackmd tKQW1R4oSvSm58CCiq1f-Q %}