mirror of https://github.com/gohugoio/hugo
114 lines
3.0 KiB
Markdown
114 lines
3.0 KiB
Markdown
---
|
|
title: diagrams.Goat
|
|
description: Converts ASCII art to an SVG diagram, returning a GoAT diagram object.
|
|
categories: []
|
|
keywords: []
|
|
action:
|
|
aliases: []
|
|
related: []
|
|
returnType: diagrams.goatDiagram
|
|
signatures: ['diagrams.Goat INPUT']
|
|
toc: true
|
|
---
|
|
|
|
Useful in a [code block render hook], the `diagram.Goat` function converts ASCII art to an SVG diagram, returning a [GoAT] diagram object with the following methods:
|
|
|
|
[GoAT]: https://github.com/blampe/goat#readme
|
|
[code block render hook]: /render-hooks/code-blocks/
|
|
|
|
Inner
|
|
: (`template.HTML`) Returns the SVG child elements without a wrapping `svg` element, allowing you to create your own wrapper.
|
|
|
|
Wrapped
|
|
: (`template.HTML`) Returns the SVG child elements wrapped in an `svg` element.
|
|
|
|
Width
|
|
: (`int`) Returns the width of the rendered diagram, in pixels.
|
|
|
|
Height
|
|
: (`int`) Returns the height of the rendered diagram, in pixels.
|
|
|
|
## GoAT Diagrams
|
|
|
|
Hugo natively supports [GoAT](https://github.com/bep/goat) diagrams with an [embedded code block render hook].
|
|
|
|
[embedded code block render hook]: {{% eturl render-codeblock-goat %}}
|
|
|
|
This Markdown:
|
|
|
|
````
|
|
```goat
|
|
.---. .-. .-. .-. .---.
|
|
| A +--->| 1 |<--->| 2 |<--->| 3 |<---+ B |
|
|
'---' '-' '+' '+' '---'
|
|
```
|
|
````
|
|
|
|
Is rendered to:
|
|
|
|
```html
|
|
<div class="goat svg-container">
|
|
<svg xmlns="http://www.w3.org/2000/svg" font-family="Menlo,Lucida Console,monospace" viewBox="0 0 352 57">
|
|
...
|
|
</svg>
|
|
</div>
|
|
```
|
|
|
|
Which appears in your browser as:
|
|
|
|
```goat {class="mw6-ns"}
|
|
.---. .-. .-. .-. .---.
|
|
| A +--->| 1 |<--->| 2 |<--->| 3 |<---+ B |
|
|
'---' '-' '+' '+' '---'
|
|
```
|
|
|
|
To customize rendering, override Hugo's [embedded code block render hook] for GoAT diagrams.
|
|
|
|
## Code block render hook
|
|
|
|
By way of example, let's create a code block render hook to render GoAT diagrams as `figure` elements with an optional caption.
|
|
|
|
{{< code file=layouts/_default/_markup/render-codeblock-goat.html >}}
|
|
{{ $caption := or .Attributes.caption "" }}
|
|
{{ $class := or .Attributes.class "diagram" }}
|
|
{{ $id := or .Attributes.id (printf "diagram-%d" (add 1 .Ordinal)) }}
|
|
|
|
<figure id="{{ $id }}">
|
|
{{ with diagrams.Goat (trim .Inner "\n\r") }}
|
|
<svg class="{{ $class }}" width="{{ .Width }}" height="{{ .Height }}" xmlns="http://www.w3.org/2000/svg" version="1.1">
|
|
{{ .Inner }}
|
|
</svg>
|
|
{{ end }}
|
|
<figcaption>{{ $caption }}</figcaption>
|
|
</figure>
|
|
{{< /code >}}
|
|
|
|
This Markdown:
|
|
|
|
{{< code file=content/example.md lang=text >}}
|
|
```goat {class="foo" caption="Diagram 1: Example"}
|
|
.---. .-. .-. .-. .---.
|
|
| A +--->| 1 |<--->| 2 |<--->| 3 |<---+ B |
|
|
'---' '-' '+' '+' '---'
|
|
```
|
|
{{< /code >}}
|
|
|
|
Is rendered to:
|
|
|
|
```html
|
|
<figure id="diagram-1">
|
|
<svg class="foo" width="272" height="57" xmlns="http://www.w3.org/2000/svg" version="1.1">
|
|
...
|
|
</svg>
|
|
<figcaption>Diagram 1: Example</figcaption>
|
|
</figure>
|
|
```
|
|
|
|
Use CSS to style the SVG as needed:
|
|
|
|
```css
|
|
svg.foo {
|
|
font-family: "Segoe UI","Noto Sans",Helvetica,Arial,sans-serif
|
|
}
|
|
```
|