feat: add responsive image support (#1283)
* feat: create responsive-image helper * feat: new responsive-image helper * feat: Implement responsive image rendering in page content using a new partial and configure image processing widths. * feat: add `sizes` attribute for enhanced image responsiveness * feat: add responsive image to page header too * Check for `.Enabled` before processing image * style: remove wrong article-list--tile width and height * feat: add `helper/thumbnail-image` for responsive thumbnails * feat: enable content image processing and update responsive image `sizes` attributes for improved display. * fix: get src from the attributes so external image can work correctly * fix: add missing data-title-escaped * Update layouts/_partials/article/components/header.html Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * feat: remove default `true` for thumbnail resize parameter. * Update layouts/_markup/render-image.html Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update layouts/_partials/helper/thumbnail-image.html Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * add original width and height to thumbnail pictures, for case that resize is not enabled * Update layouts/_partials/helper/thumbnail-image.html Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Jimmy
@@ -14,8 +14,19 @@
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{{- $image := partial "helper/image" (dict "Image" .Params.image "Resources" .Resources) -}}
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{{ if $image }}
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<div class="article-image">
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<img src="{{ $image.Permalink }}" width="{{ $image.Width }}" height="{{ $image.Height }}" alt="{{ .Title }}"
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loading="lazy">
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{{ partial "helper/thumbnail-image" (dict
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"Resource" $image.Resource
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"Width" 60
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"Height" 60
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"Resize" .Site.Params.ImageProcessing.Thumbnail.Enabled
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"Attributes" (dict
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"src" $image.Permalink
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"alt" .Title
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"loading" "lazy"
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"width" $image.Width
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"height" $image.Height
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)
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) }}
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</div>
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{{ end }}
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</a>
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@@ -3,8 +3,19 @@
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<a href="{{ .context.RelPermalink }}">
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{{ if $image }}
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<div class="article-image">
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<img src="{{ $image.Permalink }}" width="{{ $image.Width }}" height="{{ $image.Height }}" loading="lazy"
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alt="Featured image of post {{ .context.Title }}">
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{{ partial "helper/thumbnail-image" (dict
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"Resource" $image.Resource
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"Width" 250
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"Height" 150
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"Resize" .context.Site.Params.ImageProcessing.Thumbnail.Enabled
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"Attributes" (dict
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"src" $image.Permalink
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"alt" (printf "Featured image of post %s" .context.Title)
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"loading" "lazy"
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"width" $image.Width
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"height" $image.Height
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)
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) }}
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</div>
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{{ end }}
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@@ -5,8 +5,18 @@
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{{ if $image }}
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<div class="article-image">
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<a href="{{ $Page.RelPermalink }}">
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<img src="{{ $image.Permalink }}" width="{{ $image.Width }}" height="{{ $image.Height }}" loading="lazy"
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alt="Featured image of post {{ $Page.Title }}" />
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{{ partial "helper/responsive-image" (dict
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"Resource" $image.Resource
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"Widths" (cond $Page.Site.Params.ImageProcessing.Content.Enabled $Page.Site.Params.ImageProcessing.Content.Widths nil)
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"Attributes" (dict
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"src" $image.Permalink
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"width" $image.Width
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"height" $image.Height
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"alt" (printf "Featured image of post %s" $Page.Title)
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"loading" "lazy"
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"sizes" "(max-width: 767px) calc(100vw - 30px), (max-width: 1023px) 700px, (max-width: 1279px) 950px, 1232px"
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)
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) }}
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</a>
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</div>
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{{ end }}
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@@ -0,0 +1,33 @@
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{{- /*
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Params:
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Resource: Hugo image resource object (Optional, for processing)
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Widths: Slice of widths to generate for srcset
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Attributes: Map of HTML attributes for the <img> tag
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*/ -}}
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{{- $resource := .Resource -}}
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{{- $widths := .Widths -}}
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{{- $attributes := .Attributes | default dict -}}
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{{/* Generate srcset if Resource and Widths are provided */}}
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{{- if and $widths $resource (reflect.IsImageResourceProcessable $resource) -}}
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{{- $srcset := slice -}}
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{{- range $widths -}}
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{{- if lt . $resource.Width -}}
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{{- $resized := $resource.Resize (printf "%dx" .) -}}
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{{- $srcset = $srcset | append (printf "%s %dw" $resized.RelPermalink .) -}}
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{{- end -}}
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{{- end -}}
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{{- if gt (len $srcset) 0 -}}
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{{- $permalink := default $resource.RelPermalink (index $attributes "src") -}}
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{{- $srcset = $srcset | append (printf "%s %dw" $permalink $resource.Width) -}}
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{{- $attributes = merge $attributes (dict "srcset" (delimit $srcset ", ")) -}}
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{{- end -}}
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{{- end -}}
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<img {{- range $k, $v := $attributes -}}
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{{- if $v -}}
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{{- printf " %s=%q" (lower $k) (printf "%v" $v) | safeHTMLAttr -}}
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{{- end -}}
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{{- end -}}>
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@@ -0,0 +1,41 @@
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{{- /*
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Params:
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Resource: Hugo image resource object (Optional, for processing)
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Width: Image width (Required)
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Height: Image height (Required)
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Resize: Whether to perform resize (Optional, default: false)
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Attributes: Map of HTML attributes for the <img> tag
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*/ -}}
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{{- $resource := .Resource -}}
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{{- $width := .Width -}}
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{{- $height := .Height -}}
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{{- $resize := .Resize -}}
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{{- $attributes := .Attributes | default dict -}}
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{{- if and $resize $resource (reflect.IsImageResourceProcessable $resource) $width $height -}}
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{{/* Create thumbnail with 1x/2x descriptors */}}
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{{- $srcset := slice -}}
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{{- range (slice 1 2) -}}
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{{- $w := mul $width . -}}
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{{- $h := mul $height . -}}
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{{- if and (le $w $resource.Width) (le $h $resource.Height) -}}
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{{- $resized := $resource.Fill (printf "%dx%d" $w $h) -}}
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{{- $srcset = $srcset | append (printf "%s %dx" $resized.RelPermalink .) -}}
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{{- if eq . 1 -}}
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{{- $attributes = merge $attributes (dict "src" $resized.RelPermalink) -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- if gt (len $srcset) 0 -}}
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{{- $attributes = merge $attributes (dict "width" $width "height" $height "srcset" (delimit $srcset ", ")) -}}
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{{- end -}}
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{{- end -}}
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<img {{- range $k, $v := $attributes -}}
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{{- if $v -}}
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{{- printf " %s=%q" (lower $k) (printf "%v" $v) | safeHTMLAttr -}}
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{{- end -}}
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{{- end -}}>
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