bunteshaus.de/themes/buha/layouts/partials/snippets/banner.html

{{ $title := .Title }}
{{ $title = singularize $title }}
{{ $title = i18n $title }}
{{ if not $title }}
    {{ $title = .Title }}
{{ end }}
{{ $good_w := "1920"}}
{{ $good_h := "550"}}
{{ $px := string "400" }}
{{ $fill := string (printf "1280x%s smart" $px) }}
{{ $what := "none" }}
{{ $img := "none" }}
{{ if eq .Kind "home" }}
    {{ $what = "home" }}
{{ else }}
    {{ with .File }}
        {{ $what = .File.ContentBaseName }}
    {{ end }}
{{ end }}
{{ $banner := printf "/images/banner/%s*" $what }}
{{ if resources.GetMatch $banner }}
    {{  $img = (resources.GetMatch $banner).Fill $fill }}
{{ end }}
{{ if and (resources.GetMatch $banner) (ne .Params.banner false) }}
    <div style="background-image: url({{- $img.Permalink -}})" class="banner">
        <h1>{{ $title }}</h1>
        {{ if eq hugo.Environment "development" }}
            <div>
                {{ $w := (resources.GetMatch $banner).Width }}
                {{ $h := (resources.GetMatch $banner).Height }}
                {{ if lt (int $w) $good_w }}
                    {{ if eq hugo.Environment "development" }}
                        Width: {{ $w }}px: too small, better {{ $good_w -}}px in width<br>
                    {{ end }}
                {{ else if gt (int $w) $good_w }}
                    {{ if eq hugo.Environment "development" }}
                        Width: {{ $w }}px: too big, better {{ $good_w -}}px in width<br>
                    {{ end }}
                {{ end }}
                {{ if lt (int $h) $good_h }}
                    {{ if eq hugo.Environment "development" }}
                        Height: {{ $h }}px: too small, better {{ $good_h -}}px in height<br>
                    {{ end }}
                {{ else if gt (int $h) $good_h }}
                    {{ if eq hugo.Environment "development" }}
                        Height: {{ $h }}px: too big, better {{ $good_h -}}px in height<br>
                    {{ end }}
                {{ end }}
            </div>
        {{ end }}
    </div>
{{ else if and (.Resources.Match "banner*") (ne .Params.banner false) }}
        {{ $img = (.Resources.GetMatch "banner*").Fill $fill }}
    <div style="background-image:url({{- $img.Permalink -}})" class="banner">
        <h1>{{ $title }}</h1>
        {{ if eq hugo.Environment "development" }}
            <div>
                {{ $w :=  (index (.Resources.Match "banner*") 0).Width }}
                {{ $h := (index (.Resources.Match "banner*") 0).Height }}
                {{ if lt (int $w) $good_w }}
                    {{ if eq hugo.Environment "development" }}
                        Width: {{ $w }}px: too small, better {{ $good_w -}}px in width<br>
                    {{ end }}
                {{ else if gt (int $w) $good_w }}
                    {{ if eq hugo.Environment "development" }}
                        Width: {{ $w }}px: too big, better {{ $good_w -}}px in width<br>
                    {{ end }}
                {{ end }}
                {{ if lt (int $h) $good_h }}
                    {{ if eq hugo.Environment "development" }}
                        Height: {{ $h }}px: too small, better {{ $good_h -}}px in height<br>
                    {{ end }}
                {{ else if gt (int $h) $good_h }}
                    {{ if eq hugo.Environment "development" }}
                        Height: {{ $h }}px: too big, better {{ $good_h -}}px in height<br>
                    {{ end }}
                {{ end }}
            </div>
        {{ end }}
    </div>
{{ else if and (.Resources.ByType "image") (ne .Params.banner false) }}
        {{ $img = (index (.Resources.ByType "image") 0).Fill $fill }}
    <div style="background-image: url({{- $img.Permalink -}})" class="banner">
        <h1>{{ $title }}</h1>
        {{ if eq hugo.Environment "development" }}
            <div>
                {{ $w := (index (.Resources.ByType "image") 0).Width }}
                {{ $h := (index (.Resources.ByType "image") 0).Height }}
                {{ if lt (int $w) $good_w }}
                    {{ if eq hugo.Environment "development" }}
                        Width: {{ $w }}px: too small, better {{ $good_w -}}px in width<br>
                    {{ end }}
                {{ else if gt (int $w) $good_w }}
                    {{ if eq hugo.Environment "development" }}
                        Width: {{ $w }}px: too big, better {{ $good_w -}}px in width<br>
                    {{ end }}
                {{ end }}
                {{ if lt (int $h) $good_h }}
                    {{ if eq hugo.Environment "development" }}
                        Height: {{ $h }}px: too small, better {{ $good_h -}}px in height<br>
                    {{ end }}
                {{ else if gt (int $h) $good_h }}
                    {{ if eq hugo.Environment "development" }}
                        Height: {{ $h }}px: too big, better {{ $good_h -}}px in height<br>
                    {{ end }}
                {{ end }}
            </div>
        {{ end }}
    </div>
{{ else }}
    <div class="banner">
        <h1>{{ $title }}</h1>
        {{ if eq hugo.Environment "development" }}
            <p>
            assets/images/banner/{{ $what -}}.* missing..<br>
            or<br>
            {{ with .File }}content/{{ .Dir }}/banner* missing..{{ end }}
            </p>
        {{ end }}
    </div>
{{ end }}