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|
{{ $file := .Destination }}
{{ $altText := .Text }}
{{ $class := .Page.Param "markupImgClass" }}
<!-- Get image processing options -->
{{ $imageProc := .Page.Scratch.Get "imageProc" }}
<!-- Default image path -->
{{ $imgPath := .Page.Param "imgPath" }}
{{ if $imgPath }}
{{ $file = path.Join $imgPath $file }}
{{ end }}
{{ $encodedPixel := (printf "data:image/gif;base64,%s" ((resources.Get "img/pixel.gif").Content | base64Encode)) | safeURL }}
<!-- Assume file is local if found -->
{{ with $.Page.Resources.GetMatch $file }}
<!-- If image width is equal or greater than X, process it -->
{{ if ge .Width $imageProc.markupAutoResizeWidth }}
<!--
HACK
Reduce reflow by generating a placeholder with similar size
-->
{{ $mediumRes := (index $imageProc.mediumRes 0) }}
{{ $encodedPlaceholder := (printf "data:image/png;base64,%s" (((resources.Get "img/pixel.gif").Resize (printf "%vx%v %s" (.Resize $mediumRes).Width (.Resize $mediumRes).Height "png")).Content | base64Encode)) | safeURL }}
{{ $outputSet := slice }}
{{ $inputFile := . }}
{{ range $imageProc }}
{{ $outputSet = $outputSet | append (printf "%s %s" (($inputFile.Resize (index . 0)).RelPermalink) (index . 1)) }}
{{ end }}
<img
class="lazyload {{ $class }}"
loading="lazy"
data-srcset='{{ delimit $outputSet ", " }}'
src="{{ $encodedPlaceholder }}"
data-src="{{ (.Resize $mediumRes).RelPermalink }}"
width="{{ (.Resize $mediumRes).Width }}"
height="{{ (.Resize $mediumRes).Height }}"
{{ with $altText }}alt="{{ . }}"{{ end }}
/>
<noscript>
<img
{{ with $class }}class="{{ . }}"{{ end }}
loading="lazy"
srcset='{{ delimit $outputSet ", " }}'
src="{{ $encodedPlaceholder }}"
width="{{ (.Resize $mediumRes).Width }}"
height="{{ (.Resize $mediumRes).Height }}"
{{ with $altText }}alt="{{ . }}"{{ end }}
/>
</noscript>
{{ else }}
<!--
HACK
Reduce reflow by creating a placeholder with similar size
-->
{{ $processed := (.Resize (printf "%vx" .Width)) }}
{{ $encodedPlaceholder := (printf "data:image/png;base64,%s" (((.Resize (printf "%vx %s" .Width "png")) | images.Filter (images.Contrast -100)).Content | base64Encode)) | safeURL }}
<img
class="lazyload {{ $class }}"
loading="lazy"
src="{{ $encodedPlaceholder }}"
data-src="{{ $processed.RelPermalink }}"
width="{{ .Width }}"
height="{{ .Height }}"
{{ with $altText }}alt="{{ . }}"{{ end }}
/>
<noscript>
<img
{{ with $class }}class="{{ . }}"{{ end }}
loading="lazy"
src="{{ $processed.RelPermalink }}"
width="{{ .Width }}"
height="{{ .Height }}"
{{ with $altText }}alt="{{ . }}"{{ end }}
/>
</noscript>
{{ end }}
{{ else }}
<!-- If local file isn't found, assume it's a remote file -->
{{ with (.Destination | safeURL) }}
<img
class="lazyload {{ $class }}"
loading="lazy"
src="{{ $encodedPixel }}"
data-src="{{ . }}"
{{ with $altText }}alt="{{ . }}"{{ end }}
/>
<noscript>
<img
{{ with $class }}class="{{ . }}"{{ end }}
loading="lazy"
src="{{ . }}"
{{ with $altText }}alt="{{ . }}"{{ end }}
/>
</noscript>
{{ end }}
{{ end }}
|