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# Icons and SVG Illustrations
We manage our own Icon and Illustration library in the [gitlab-svgs][gitlab-svgs] repository.
This repository is published on [npm][npm] and managed as a dependency via yarn.
You can browse all available Icons and Illustrations [here][svg-preview].
To upgrade to a new version run `yarn upgrade @gitlab/svgs`.
## Icons
We are using SVG Icons in GitLab with a SVG Sprite.
This means the icons are only loaded once, and are referenced through an ID.
The sprite SVG is located under `/assets/icons.svg`.
Our goal is to replace one by one all inline SVG Icons (as those currently bloat the HTML) and also all Font Awesome icons.
### Usage in HAML/Rails
To use a sprite Icon in HAML or Rails we use a specific helper function :
```ruby
sprite_icon(icon_name, size: nil, css_class: '')
```
- **icon_name** Use the icon_name that you can find in the SVG Sprite
([Overview is available here][svg-preview]).
- **size (optional)** Use one of the following sizes : 16, 24, 32, 48, 72 (this will be translated into a `s16` class)
- **css_class (optional)** If you want to add additional css classes
**Example**
```haml
= sprite_icon('issues', size: 72, css_class: 'icon-danger')
```
**Output from example above**
```html
<svg class="s72 icon-danger">
<use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="/assets/icons.svg#issues"></use>
</svg>
```
### Usage in Vue
We have a special Vue component for our sprite icons in `\vue_shared\components\icon.vue`.
Sample usage :
```javascript
<script>
import Icon from "~/vue_shared/components/icon.vue"
export default {
components: {
Icon,
},
};
<script>
<template>
<icon
name="issues"
:size="72"
css-classes="icon-danger"
/>
</template>
```
- **name** Name of the Icon in the SVG Sprite ([Overview is available here][svg-preview]).
- **size (optional)** Number value for the size which is then mapped to a specific CSS class
(Available Sizes: 8, 12, 16, 18, 24, 32, 48, 72 are mapped to `sXX` css classes)
- **css-classes (optional)** Additional CSS Classes to add to the svg tag.
### Usage in HTML/JS
Please use the following function inside JS to render an icon:
`gl.utils.spriteIcon(iconName)`
## SVG Illustrations
Please use from now on for any SVG based illustrations simple `img` tags to show an illustration by simply using either `image_tag` or `image_path` helpers.
Please use the class `svg-content` around it to ensure nice rendering.
### Usage in HAML/Rails
**Example**
```haml
.svg-content
= image_tag 'illustrations/merge_requests.svg'
```
### Usage in Vue
To use an SVG illustrations in a template provide the path as a property and display it through a standard img tag.
Component:
```js
<script>
export default {
props: {
svgIllustrationPath: {
type: String,
required: true,
},
},
};
<script>
<template>
<img :src="svgIllustrationPath" />
</template>
```
[npm]: https://www.npmjs.com/package/@gitlab/svgs
[gitlab-svgs]: https://gitlab.com/gitlab-org/gitlab-svgs
[svg-preview]: https://gitlab-org.gitlab.io/gitlab-svgs
|
