Add support for mobile screen sizes on Darkfish

This adds support for reading the Darkfish-generated docs in mobile devices. I tried to keep the changes minimal, and the current layout was mostly preserved. The most notable change is the navigation sidebar, which is now hidden by default on "small screens" (everything below 1024px). It can be toggled by the button on the top left corner. This button implements the ARIA pattern for a [disclosure widget]. The icon for the button was taken from [Iconoir], which is licensed under the MIT license. The design and some of the implementation were loosely inspired by the [Elixir lang docs]. [disclosure widget]: https://www.w3.org/WAI/ARIA/apg/patterns/disclosure/ [Iconoir]: https://iconoir.com/ [Elixir docs]: https://hexdocs.pm/elixir/1.15.2/Kernel.html
ruby · Jul 5, 2023 · d88b2a0 · d88b2a0
1 parent e8f22ce
commit d88b2a0
Show file tree

Hide file tree

Showing 10 changed files with 131 additions and 20 deletions.
diff --git a/lib/rdoc/generator/template/darkfish/_head.rhtml b/lib/rdoc/generator/template/darkfish/_head.rhtml
@@ -1,4 +1,5 @@
 <meta charset="<%= @options.charset %>">
+<meta name="viewport" content="width=device-width, initial-scale=1" />
 
 <title><%= h @title %></title>
 

diff --git a/lib/rdoc/generator/template/darkfish/_sidebar_toggle.rhtml b/lib/rdoc/generator/template/darkfish/_sidebar_toggle.rhtml
@@ -0,0 +1,26 @@
+<button id="navigation-toggle" class="navigation-toggle" aria-label="Toggle sidebar" aria-expanded="true" aria-controls="navigation">
+  <!--
+    Copyright (c) 2021 Luca Burgio
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+  -->
+  <svg width="20px" height="24px" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" color="#000000">
+    <path d="M3 5h18M3 12h18M3 19h18" stroke="#000000" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"></path>
+  </svg>
+</button>
diff --git a/lib/rdoc/generator/template/darkfish/class.rhtml b/lib/rdoc/generator/template/darkfish/class.rhtml
@@ -1,5 +1,7 @@
 <body id="top" role="document" class="<%= klass.type %>">
-<nav role="navigation">
+<%= render '_sidebar_toggle.rhtml' %>
+
+<nav id="navigation" role="navigation">
   <div id="project-navigation">
     <%= render '_sidebar_navigation.rhtml' %>
     <%= render '_sidebar_search.rhtml' %>

diff --git a/lib/rdoc/generator/template/darkfish/css/rdoc.css b/lib/rdoc/generator/template/darkfish/css/rdoc.css
@@ -19,12 +19,12 @@ body {
   font-weight: 300;
 
   /* Layout */
-  display: grid;
-  grid-template-columns: auto 1fr;
+  display: flex;
+  flex-wrap: wrap;
 }
 
 body > :last-child {
-  grid-column: 1 / 3;
+  width: 100%;
 }
 
 h1 span,
@@ -192,24 +192,40 @@ nav {
   font-family: Helvetica, sans-serif;
   font-size: 14px;
   border-right: 1px solid #ccc;
-  position: sticky;
+  position: fixed;
   top: 0;
   overflow: auto;
+  z-index: 10;
 
   /* Layout */
-  width: 260px; /* fallback */
-  width: max(50px, 20vw);
-  min-width: 50px;
-  max-width: 80vw;
-  height: calc(100vh - 100px); /* reduce the footer height */
+  width: 300px;
+  min-height: 100vh;
+
   resize: horizontal;
+  background: white;
+}
+
+@media (min-width: 1024px) {
+  nav {
+    min-height: unset;
+    height: calc(100vh - 100px); /* reduce the footer height */
+  }
 }
 
 main {
   display: block;
-  margin: 1em;
+  margin: 3em 1em 1em;
   min-width: 340px;
   font-size: 16px;
+  width: 100%;
+  max-width: 64em;
+}
+
+@media (min-width: 1024px) {
+  main {
+    margin-left: auto;
+    margin-right: auto;
+  }
 }
 
 main h1,
@@ -221,8 +237,10 @@ main h6 {
   font-family: Helvetica, sans-serif;
 }
 
-.table-of-contents main {
-  margin-left: 2em;
+@media (min-width: 1024px) {
+  .table-of-contents main {
+    margin-left: 20em;
+  }
 }
 
 #validator-badges {
@@ -269,6 +287,39 @@ nav p {
   list-style: none;
 }
 
+.navigation-toggle {
+  position: fixed;
+  left: 4px;
+  top: 6px;
+  z-index: 100;
+
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  margin-left: 7px;
+  padding: 4px;
+}
+.navigation-toggle[aria-expanded="true"] {
+  left: 260px;
+}
+
+/* Adds a suble gradient to help the toggle stand out from the background */
+.navigation-toggle::before {
+  content: "";
+  background: linear-gradient(180deg, rgba(250,250,250,1) 40%, rgba(250,250,250,0.8) 70%, rgba(250,250,250,0) 100%);
+  display: block;
+  z-index: -1;
+  pointer-events: none;
+  position: fixed;
+  top: 0;
+  height: 50px;
+  width: 100vw;
+}
+
+.navigation-toggle[aria-expanded="true"]::before {
+  height: 0;
+}
+
 #project-navigation .nav-section {
   margin: 0;
   border-top: 0;
@@ -673,4 +724,3 @@ pre {
 }
 
 /* @end */
-
diff --git a/lib/rdoc/generator/template/darkfish/index.rhtml b/lib/rdoc/generator/template/darkfish/index.rhtml
@@ -1,5 +1,7 @@
 <body id="top" role="document" class="file">
-<nav role="navigation">
+<%= render '_sidebar_toggle.rhtml' %>
+
+<nav id="navigation" role="navigation">
   <div id="project-navigation">
     <%= render '_sidebar_navigation.rhtml' %>
 

diff --git a/lib/rdoc/generator/template/darkfish/js/darkfish.js b/lib/rdoc/generator/template/darkfish/js/darkfish.js
@@ -90,8 +90,25 @@ function hookFocus() {
   });
 }
 
+function hookSidebar() {
+  var navigation = document.querySelector('#navigation');
+  var navigationToggle = document.querySelector('#navigation-toggle');
+
+  navigationToggle.addEventListener('click', function() {
+    navigation.hidden = !navigation.hidden;
+    navigationToggle.ariaExpanded = navigationToggle.ariaExpanded !== 'true';
+  });
+
+  var isSmallViewport = window.matchMedia("(max-width: 1024px)").matches;
+  if (isSmallViewport) {
+    navigation.hidden = true;
+    navigationToggle.ariaExpanded = false;
+  }
+}
+
 document.addEventListener('DOMContentLoaded', function() {
   hookSourceViews();
   hookSearch();
   hookFocus();
+  hookSidebar();
 });
diff --git a/lib/rdoc/generator/template/darkfish/page.rhtml b/lib/rdoc/generator/template/darkfish/page.rhtml
@@ -1,5 +1,7 @@
 <body id="top" role="document" class="file">
-<nav role="navigation">
+<%= render '_sidebar_toggle.rhtml' %>
+
+<nav id="navigation" role="navigation">
   <div id="project-navigation">
     <%= render '_sidebar_navigation.rhtml' %>
     <%= render '_sidebar_search.rhtml' %>
@@ -15,4 +17,3 @@
 <main role="main" aria-label="Page <%=h file.full_name%>">
 <%= file.description %>
 </main>
-
diff --git a/lib/rdoc/generator/template/darkfish/servlet_not_found.rhtml b/lib/rdoc/generator/template/darkfish/servlet_not_found.rhtml
@@ -1,5 +1,7 @@
 <body role="document">
-<nav role="navigation">
+<%= render '_sidebar_toggle.rhtml' %>
+
+<nav id="navigation" role="navigation">
   <%= render '_sidebar_navigation.rhtml' %>
 
   <%= render '_sidebar_search.rhtml' %>
@@ -15,4 +17,3 @@
 
   <p><%= message %>
 </main>
-
diff --git a/lib/rdoc/generator/template/darkfish/servlet_root.rhtml b/lib/rdoc/generator/template/darkfish/servlet_root.rhtml
@@ -1,5 +1,7 @@
 <body role="document">
-<nav role="navigation">
+<%= render '_sidebar_toggle.rhtml' %>
+
+<nav id="navigation" role="navigation">
   <div id="project-navigation">
     <div id="home-section" class="nav-section">
       <h2>

diff --git a/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml b/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
@@ -1,4 +1,13 @@
 <body id="top" class="table-of-contents">
+<%= render '_sidebar_toggle.rhtml' %>
+
+<nav id="navigation" role="navigation">
+  <div id="project-navigation">
+    <%= render '_sidebar_navigation.rhtml' %>
+
+    <%= render '_sidebar_search.rhtml' %>
+  </div>
+</nav>
 <main role="main">
 <h1 class="class"><%= h @title %></h1>