51 lines
1.5 KiB
HTML
51 lines
1.5 KiB
HTML
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{{/*
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Renders a photo thumbnail. If neither a target height or target width are
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given, and the image is already in the correct orientation, no image
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processing is performed.
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Arguments
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---------
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"Page" : A reference to the current Page
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"Height" : The target height of the image
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"Width" : The target width of the image
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Returns
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-------
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The processed thumbnail image resource
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*/}}
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{{- $thumbnailResource := .Page.Resources.GetMatch
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(index .Page.Params "thumbnail" | default "[tT]humbnail*")
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| default (index (.Page.Resources.ByType "image") 0) -}}
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{{- if not $thumbnailResource -}}
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{{- errorf "No thumbnail available for %s" .Page.Permalink }}
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{{- end -}}
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{{ $orientation := partial "image-utilities/orientation-angle.html" $thumbnailResource }}
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{{ $targetWidth := 0 }}
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{{ with .Width }}
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{{ $targetWidth = . }}
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{{ else }}
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{{ $targetWidth = $thumbnailResource.Width }}
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{{ end }}
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{{ $targetHeight := 0 }}
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{{ with .Height }}
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{{ $targetHeight = . }}
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{{ else }}
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{{ $targetHeight = $thumbnailResource.Height }}
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{{ end }}
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{{ $thumbnail := false }}
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{{ if not (and (eq $orientation 0)
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(eq $targetWidth $thumbnailResource.Width)
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(eq $targetHeight $thumbnailResource.Height)) }}
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{{ $thumbnail = $thumbnailResource.Fit (printf "%dx%d r%d" $targetWidth $targetHeight (sub 360 $orientation)) }}
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{{ else }}
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{{ $thumbnail = $thumbnailResource }}
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{{ end }}
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{{ return $thumbnail }}
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