From 509ef5c3d68ababee0c97f4caa931a55f9836f7f Mon Sep 17 00:00:00 2001
From: Chris Short <chris@chrisshort.net>
Date: Thu, 30 Nov 2023 19:17:05 +0000
Subject: [PATCH] header tweaking

---
 layouts/partials/header.html | 156 +++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 layouts/partials/header.html

diff --git a/layouts/partials/header.html b/layouts/partials/header.html
new file mode 100644
index 00000000..1a5b40af
--- /dev/null
+++ b/layouts/partials/header.html
@@ -0,0 +1,156 @@
+{{- /*  theme-toggle is enabled  */}}
+{{- if (not .Site.Params.disableThemeToggle) }}
+{{- /*  theme is light  */}}
+{{- if (eq .Site.Params.defaultTheme "light") }}
+<script>
+    if (localStorage.getItem("pref-theme") === "dark") {
+        document.body.classList.add('dark');
+    }
+
+</script>
+{{- /*  theme is dark  */}}
+{{- else if (eq .Site.Params.defaultTheme "dark") }}
+<script>
+    if (localStorage.getItem("pref-theme") === "light") {
+        document.body.classList.remove('dark')
+    }
+
+</script>
+{{- else }}
+{{- /*  theme is auto  */}}
+<script>
+    if (localStorage.getItem("pref-theme") === "dark") {
+        document.body.classList.add('dark');
+    } else if (localStorage.getItem("pref-theme") === "light") {
+        document.body.classList.remove('dark')
+    } else if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
+        document.body.classList.add('dark');
+    }
+
+</script>
+{{- end }}
+{{- /*  theme-toggle is disabled and theme is auto  */}}
+{{- else if (and (ne .Site.Params.defaultTheme "light") (ne .Site.Params.defaultTheme "dark"))}}
+<script>
+    if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
+        document.body.classList.add('dark');
+    }
+
+</script>
+{{- end }}
+<noscript>
+    <style type="text/css">
+        #theme-toggle,
+        .top-link {
+            display: none;
+        }
+
+    </style>
+    {{- if (and (ne .Site.Params.defaultTheme "light") (ne .Site.Params.defaultTheme "dark")) }}
+    <style>
+        @media (prefers-color-scheme: dark) {
+            :root {
+                --theme: #1d1e20;
+                --entry: #2e2e33;
+                --primary: rgba(255, 255, 255, 0.84);
+                --secondary: rgba(255, 255, 255, 0.56);
+                --tertiary: rgba(255, 255, 255, 0.16);
+                --content: rgba(255, 255, 255, 0.74);
+                --hljs-bg: #2e2e33;
+                --code-bg: #37383e;
+                --border: #333;
+            }
+
+            .list {
+                background: var(--theme);
+            }
+
+            .list:not(.dark)::-webkit-scrollbar-track {
+                background: 0 0;
+            }
+
+            .list:not(.dark)::-webkit-scrollbar-thumb {
+                border-color: var(--theme);
+            }
+        }
+    </style>
+    {{- end }}
+
+</noscript>
+<header class="header">
+    <nav class="nav">
+        <div class="logo">
+            {{- if .Title }}
+            <a href="{{ "" | absLangURL }}" accesskey="h" title="{{ .Site.Params.label.text | default .Site.Title }} (Alt + H)">
+                {{- if .Site.Params.label.icon }}
+                <img src="{{- .Site.Params.label.icon -}}" alt="Logo: A gradient orange circle with the textured light blue initials CS" aria-label="Logo: A gradient orange circle with the textured light blue initials CS"
+                    height="{{- .Site.Params.label.iconHeight | default "45px" -}}">
+                {{- end -}}
+                {{- .Site.Params.label.text | default .Site.Title -}}
+            </a>
+            {{- end }}
+            <span class="logo-switches">
+                {{- if (not .Site.Params.disableThemeToggle) }}
+                <button id="theme-toggle" accesskey="t" title="(Alt + T)">
+                    <svg id="moon" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"
+                        fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
+                        stroke-linejoin="round">
+                        <path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"></path>
+                    </svg>
+                    <svg id="sun" xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"
+                        fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"
+                        stroke-linejoin="round">
+                        <circle cx="12" cy="12" r="5"></circle>
+                        <line x1="12" y1="1" x2="12" y2="3"></line>
+                        <line x1="12" y1="21" x2="12" y2="23"></line>
+                        <line x1="4.22" y1="4.22" x2="5.64" y2="5.64"></line>
+                        <line x1="18.36" y1="18.36" x2="19.78" y2="19.78"></line>
+                        <line x1="1" y1="12" x2="3" y2="12"></line>
+                        <line x1="21" y1="12" x2="23" y2="12"></line>
+                        <line x1="4.22" y1="19.78" x2="5.64" y2="18.36"></line>
+                        <line x1="18.36" y1="5.64" x2="19.78" y2="4.22"></line>
+                    </svg>
+                </button>
+                {{- end}}
+                {{ $lang := .Lang}}
+                {{ $separator := or .Title (not .Site.Params.disableThemeToggle)}}
+                {{- with $.Site.Home.AllTranslations }}
+
+                <ul class="lang-switch">
+                    {{- if $separator }}<li>|</li>{{ end }}
+                    {{- range . -}}
+                    {{- if ne $lang .Lang }}
+                    <li>
+                        <a href="{{- .Permalink -}}" title="{{ .Language.LanguageName | default (.Lang | humanize) }}"
+                            aria-label="{{ .Language.LanguageName | default (.Lang | humanize) }}">
+                            {{- if (and $.Site.Params.displayFullLangName (.Language.LanguageName)) }}
+                            {{- .Language.LanguageName | emojify -}}
+                            {{- else }}
+                            {{- .Lang | humanize -}}
+                            {{- end -}}
+                        </a>
+                    </li>
+                    {{- end -}}
+                    {{- end}}
+                </ul>
+                {{- end }}
+            </span>
+        </div>
+        {{- $currentPage := . }}
+        <ul id="menu" onscroll="menu_on_scroll()">
+            {{- range .Site.Menus.main }}
+            {{- $menu_item_url := (cond (strings.HasSuffix .URL "/") .URL (printf "%s/" .URL) ) | absLangURL }}
+            {{- $page_url:= $currentPage.Permalink  | absLangURL }}
+            {{- $is_search := eq ($.Site.GetPage .KeyName).Layout `search` }}
+            <li>
+                <a href="{{ .URL | absLangURL }}" title="{{ .Title | default .Name }} {{- cond $is_search (" (Alt + /)" | safeHTMLAttr) ("" | safeHTMLAttr ) }}"
+                {{- cond $is_search (" accesskey=/" | safeHTMLAttr) ("" | safeHTMLAttr ) }}>
+                    <span {{- if eq $menu_item_url $page_url }} class="active" {{- end }}>
+                        {{- .Name -}}
+                    </span>
+                </a>
+            </li>
+            {{- end -}}
+        </ul>
+    </nav>
+</header>