62 lines
1.9 KiB
HTML
62 lines
1.9 KiB
HTML
{{/* Original code from: https://laurakalbag.com/processing-responsive-images-with-hugo/ */}}
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{{/* Just modified a bit to work with render_image hook and output webp images */}}
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{{/* get file that matches the filename as specified as src="" */}}
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{{ $src := .Page.Resources.GetMatch (printf "%s" (.Destination | safeURL)) }}
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{{ $alt := .PlainText | safeHTML }}
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{{/* So for posts that aren't setup in the page bundles, it doesn't fail */}}
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{{ if $src }}
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{{ $tinyw := default "500x webp" }}
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{{ $smallw := default "800x webp" }}
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{{ $mediumw := default "1200x webp" }}
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{{ $largew := default "1500x webp" }}
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{{/* resize the src image to the given sizes */}}
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{{/* We create a a temp scratch because it's not available in this context */}}
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{{ $data := newScratch }}
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{{ $data.Set "tiny" ($src.Resize $tinyw) }}
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{{ $data.Set "small" ($src.Resize $smallw) }}
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{{ $data.Set "medium" ($src.Resize $mediumw) }}
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{{ $data.Set "large" ($src.Resize $largew) }}
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{{/* add the processed images to the scratch */}}
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{{ $tiny := $data.Get "tiny" }}
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{{ $small := $data.Get "small" }}
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{{ $medium := $data.Get "medium" }}
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{{ $large := $data.Get "large" }}
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{{/* only use images smaller than or equal to the src (original)
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image size, as Hugo will upscale small images */}}
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<a href="{{ $src.RelPermalink }}">
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<picture>
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<source media="(max-width: 376px)"
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srcset="{{with $tiny.RelPermalink }}{{.}}{{ end }}">
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<source media="(max-width: 992px)"
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srcset="{{with $small.RelPermalink }}{{.}}{{ end }}">
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<source media="(max-width: 1400px)"
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srcset="{{with $medium.RelPermalink }}{{.}}{{ end }}">
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<source media="(min-width: 1600px)"
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srcset="{{with $large.RelPermalink }}{{.}}{{ end }}">
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<img
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alt="{{ $alt }}" title="{{ $alt }}" src="{{ $src }}"
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class="img-fluid">
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</picture>
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</a>
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{{/* Since I do image-response class, the only thing that really
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matters is the height and width matches the image aspect ratio */}}
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{{ end }}
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