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Adding offline MathJax and Mermaid. #170

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Adding offline MathJax and Mermaid. #170

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27 changes: 21 additions & 6 deletions layouts/partials/layout/javascript.html
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Original file line number Diff line number Diff line change
Expand Up @@ -68,15 +68,23 @@
{{ end }}

{{ if $hasMermaid }}
{{ $mermaidSrc := resources.GetRemote "https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js" }}
<script type="text/javascript" src="{{ $mermaidSrc.RelPermalink }}"></script>
<script type="text/javascript">
{{- $mermaid_location := $.Param "reveal_hugo.mermaid_cdn" | default "__fetch_cdn__" -}}

{{ if eq $mermaid_location "__fetch_cdn__" }}
{{ $mermaid_location = resources.GetRemote "https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js" }}
{{ $mermaid_location = $mermaid_location.RelPermalink }}
{{ end }}

<script type="text/javascript" async src="{{ $mermaid_location }}?nocache={{ now.Unix }}">
mermaid.initialize({startOnLoad: false});

let render = (event) => {
let mermaidElems = event.currentSlide.querySelectorAll('.mermaid');

if (!mermaidElems.length){
return
}

mermaidElems.forEach(mermaidElem => {
let processed = mermaidElem.getAttribute('data-processed');
if (!processed){
Expand All @@ -85,6 +93,7 @@
}
});
};

// support current page reload with possible mermaid element
render({currentSlide: Reveal.getCurrentSlide()});

Expand All @@ -104,9 +113,15 @@
}
};
</script>

{{ $mathjaxSrc := resources.GetRemote "https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-svg.js" }}
<script type="text/javascript" id="MathJax-script" async src="{{ $mathjaxSrc.RelPermalink }}"></script>

{{- $mathjax_location := $.Param "reveal_hugo.mathjax_cdn" | default "__fetch_cdn__" -}}

{{ if eq $mathjax_location "__fetch_cdn__" }}
{{ $mathjax_location := resources.GetRemote "https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-svg.js" }}
<script type="text/javascript" id="MathJax-script" async src="{{ $mathjax_location.RelPermalink }}"></script>
{{ else }}
<script type="text/javascript" id="MathJax-script" async src="{{ $mathjax_location }}"></script>
{{ end }}
{{ end }}

{{- $custom_js := $.Param "reveal_hugo.custom_js" -}}
Expand Down