congo/layouts/partials/picture.html

85 lines
2.9 KiB
HTML

{{ $img := .img }}
{{ $alt := .alt }}
{{ $class := .class }}
{{ $lazy := .lazy }}
{{ $webp := .webp }}
{{ $lqip := .lqip }}
{{ with $img }}
{{ if (eq .MediaType.SubType "svg") }}
{{ $width := ""}}
{{ $height := ""}}
{{ $svgContent := .Content }}
{{ range (findRESubmatch `<svg[^>]*width=["']([.0-9]*)["'a-zA-Z]` $svgContent 1) }}
{{ $width = index . 1 }}
{{ end }}
{{ range (findRESubmatch `<svg[^>]*height=["']([.0-9]*)["'a-zA-Z]` $svgContent 1) }}
{{ $height = index . 1 }}
{{ end }}
{{ if (eq "" $width $height) }}
{{ range (findRESubmatch `<svg[^>]*viewBox=["']?([.0-9]*) ([.0-9]*) ([.0-9]*) ([.0-9]*)` $svgContent 1) }}
{{ $width = index . 3 }}
{{ $height = index . 4 }}
{{ end }}
{{ end }}
{{ if (eq "" $width $height) }}
{{ warnf "Can't detect width and height for SVG %s" .RelPermalink }}
{{/* do not use lazy without dimensions */}}
{{ $lazy = false }}
{{ end }}
<picture {{ with $class }} class="{{ . }}" {{ end }}>
<img
src="{{ .RelPermalink }}"
{{ with $width }} width="{{ . }}" {{ end }}
{{ with $height }} height="{{ . }}" {{ end }}
{{ with $class }} class="{{ . }}" {{ end }}
{{ with $alt }} alt="{{ . }}" {{ end }}
{{ with $lazy }} loading="lazy" decoding="async" {{ end }}
>
</picture>
{{ else }}
<picture
{{ with $class }} class="{{ . }}" {{ end }}
{{ if $lqip }}
{{ $bg := (.Resize "20x webp q20").Content | base64Encode }}
style="background-image:url(data:image/webp;base64,{{ $bg }});background-size:cover"
{{ end }}
>
{{ if $webp }}
<source
{{ if lt .Width 660 }}
{{ with .Resize (printf "%dx%d webp" .Width .Height) }}
src="{{ .RelPermalink }}"
{{ end }}
{{ else }}
srcset="
{{- (.Resize "330x webp").RelPermalink }} 330w,
{{- (.Resize "660x webp").RelPermalink }} 660w,
{{- (.Resize "1024x webp").RelPermalink }} 1024w,
{{- (.Resize "1320x webp").RelPermalink }} 2x"
src="{{ (.Resize "660x webp").RelPermalink }}"
{{ end }}
type="image/webp"
/>
{{ end }}
<img
src="{{ .RelPermalink }}"
width="{{ .Width }}"
height="{{ .Height }}"
{{ with $class }} class="{{ . }}" {{ end }}
{{ with $alt }} alt="{{ . }}" {{ end }}
{{ with $lazy }} loading="lazy" decoding="async" {{ end }}
{{ if lt .Width 660 }}
src="{{ .RelPermalink }}"
{{ else }}
srcset="
{{- (.Resize "330x").RelPermalink }} 330w,
{{- (.Resize "660x").RelPermalink }} 660w,
{{- (.Resize "1024x").RelPermalink }} 1024w,
{{- (.Resize "1320x").RelPermalink }} 2x"
src="{{ (.Resize "660x").RelPermalink }}"
{{ end }}
>
</picture>
{{ end }}
{{ end }}