hexo-filter-github-emojis/README.md
2020-10-03 11:10:42 +08:00

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# hexo-filter-github-emojis
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A Hexo plugin that adds emoji support, using [Github Emojis API][ghemojis].
Check out the [Emoji Cheat Sheet](http://www.webpagefx.com/tools/emoji-cheat-sheet/) for all the emojis it supports.
## Installation
``` bash
$ npm install hexo-filter-github-emojis --save
```
## Options
You can configure this plugin in `_config.yml`. Default options:
``` yaml
githubEmojis:
enable: true
className: github-emoji
inject: true
styles:
customEmojis:
```
- **enable** `boolean=true` - Enable `::` emoji parsing. If off the [tag](#tag) and [helper](#helper) still work.
- **className** `string="github-emoji"` - Emoji class name.
For example :sparkles: `:sparkles:` the filter will generate something like this:
```html
<span class="github-emoji"><span>&#x2728;</span><img src="https://assets-cdn.github.com/images/icons/emoji/unicode/2728.png?v8"></span>
```
- **inject** `boolean=true` - Inject emoji styles and fallback script.
If `true`, the filter will inject a `<style>` to document `<head>`.
If `false`, the filter will not inject any style. If you can modify source style files you may turn this off and add them yourself.
Below is the injected `<style>`. The class name changes according to option.
```html
<style>
.github-emoji {
position: relative;
display: inline-block;
width: 1.2em;
min-height: 1.2em;
overflow: hidden;
vertical-align: top;
color: transparent;
}
.github-emoji > span {
position: relative;
z-index: 10;
}
.github-emoji img,
.github-emoji .fancybox {
margin: 0 !important;
padding: 0 !important;
border: none !important;
outline: none !important;
text-decoration: none !important;
user-select: none !important;
cursor: auto !important;
}
.github-emoji img {
height: 1.2em !important;
width: 1.2em !important;
position: absolute !important;
left: 50% !important;
top: 50% !important;
transform: translate(-50%, -50%) !important;
user-select: none !important;
cursor: auto !important;
}
.github-emoji-fallback {
color: inherit;
}
.github-emoji-fallback img {
opacity: 0 !important;
}
</style>
```
- **styles** `object={}` - inline styles. For example:
```yaml
githubEmojis:
styles:
font-size: 2em
font-weight: bold
```
outputs:
```html
<span class="github-emoji" style="font-size:2em;font-weight:bold" ...>
```
- **customEmojis** `object={}` - You can specify your own list. An object or JSON string is valid. The filter will first check the `customEmojis` then fallback to the [Github Emojis][ghemojis] list.
For example:
```yaml
githubEmojis:
customEmojis:
arrow_left: https://path/to/arrow_left.png
arrow_right: https://path/to/arrow_right.png
```
If you need to add code points that are not in the Github list, you can do this:
```yaml
githubEmojis:
customEmojis:
man_juggling:
src: https://path/to/man_juggling.png
codepoints: ["1f939", "2642"]
arrow_right: https://path/to/arrow_right.png
```
## Tag
If you do not like the `::`-style keywords, you can always use tags:
```html
{% github_emoji sparkles %}
```
Add `no-emoji: true` to front-matter to stop replacing `::`:
```md
---
title: Hello World
no-emoji: true
---
:tada: as it is.
{% github_emoji tada %} still works.
```
## Helper
You can also render a GitHub emoji from a template using the `github_emoji` helper:
```html
<h1><%- github_emoji('octocat') %></h1>
```
[ghemojis]: https://api.github.com/emojis