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extract/reuse logic for optimizing images

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Jake Jarvis
2019-12-23 11:52:30 -06:00
parent e25c98154e
commit a7b9f897f8
4 changed files with 37 additions and 93 deletions
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39
layouts/shortcodes/image.html
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@@ -1,41 +1,14 @@
{{- /* Automatic resizing for HiDPI/retina images */ -}}
{{- $optimized := partial "optimize-image" . -}}
{{- $original := .Page.Resources.GetMatch (.Get "src") -}}
{{- .Scratch.Set "image" $original -}}
{{- $maxWidth := 910 -}}
{{- $setWidth := 0 -}}
{{- if .Get "width" -}}
{{- $setWidth = (int (.Get "width")) -}}
{{- $retinaWidth := (mul $setWidth 2) -}}
{{- if gt $original.Width $retinaWidth -}}
{{- $finalWidth := (printf "%dx" $retinaWidth) -}}
{{- .Scratch.Set "image" ($original.Resize $finalWidth) -}}
{{- end -}}
{{- else -}}
{{- $setWidth = $maxWidth -}}
{{- if gt $original.Width 1820 -}}
{{- .Scratch.Set "image" ($original.Resize "1820x") -}}
{{- end -}}
{{- end -}}
{{- $image := .Scratch.Get "image" -}}
{{- $origRatio := (div (float $image.Height) $image.Width) -}}
{{- $displayWidth := $setWidth -}}
{{- $displayHeight := (math.Ceil (mul $origRatio $setWidth)) -}}
{{ with .Inner }}
{{- with .Inner }}
<figure>
<picture>
<img src="{{ $image.Permalink }}" width="{{ $displayWidth }}" height="{{ $displayHeight }}"
<img src="{{ $optimized.Permalink }}" width="{{ $.Scratch.Get "displayWidth" }}" height="{{ $.Scratch.Get "displayHeight" }}"
alt="{{ . | markdownify | plainify | safeHTMLAttr }}" title="{{ . | markdownify | plainify | safeHTMLAttr }}">
</picture>
<figcaption>{{ $.Page.RenderString . | safeHTML }}</figcaption>
</figure>
{{ else }}
<p><img src="{{ $image.Permalink }}" width="{{ $displayWidth }}" height="{{ $displayHeight }}"
{{- else -}}
<p><img src="{{ $optimized.Permalink }}" width="{{ $.Scratch.Get "displayWidth" }}" height="{{ $.Scratch.Get "displayHeight" }}"
{{- with .Get "alt" }} alt="{{ . | safeHTMLAttr }}" title="{{ . | safeHTMLAttr }}"{{ end }}></p>
{{ end }}
{{- end }}