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rustdoc: add three-column layout for large desktops
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This commit adds a floating TOC box to the right,
leaving the sibling/module/crate navigation on the left.

This kicks in at a size a little below 1920x1080, where
desktops with very wide monitors are: it's also around
the point where the content area can be full width while
allowing two sidebars. It only kicks in if the browser
supports grid layouts, but that should be most of them,
and we can't get rid of the two-column layout anyway,
since it's the layout you get on something like a portrait iPad.

This design, where it can be used, is meant to clearly split up
the table of contents and the site navigation, so the right
side floating box has the same color as the page while the left
sidebar does not. It also pushes it down further, so that it's
not as high as the search bar, though that's a bit more
subtle than the color.
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@notriddle
notriddle committed Sep 12, 2024
1 parent 2e8db5e commit b39772f
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Showing 9 changed files with 243 additions and 73 deletions.
142 changes: 133 additions & 9 deletions src/librustdoc/html/static/css/rustdoc.css
View file
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,13 @@ xmlns="http://www.w3.org/2000/svg" fill="black" height="18px">\
</g></svg>');
--button-left-margin: 4px;
--button-border-radius: 2px;
/* Used to manage the big screen three column layout */
--width-limiter-width: 960px;
--desktop-grid-column-gap: 45px;
--container-border-radius: 6px;
/* height of header, plus header margin, plus top logo section */
--desktop-grid-toc-top: calc((1.25 * 1.5rem) + 76px + 23px);
--desktop-grid-toc-max-width: 512px;
}

/* See FiraSans-LICENSE.txt for the Fira Sans license. */
Expand Down Expand Up @@ -336,7 +343,7 @@ button#toggle-all-docs {
main {
position: relative;
flex-grow: 1;
padding: 10px 15px 40px 45px;
padding: 10px 15px 40px var(--desktop-grid-column-gap);
min-width: 0; /* avoid growing beyond the size limit */
}

Expand All @@ -345,7 +352,7 @@ main {
}

.width-limiter {
max-width: 960px;
max-width: var(--width-limiter-width);
margin-right: auto;
}

Expand All @@ -369,6 +376,7 @@ pre {
}
pre.item-decl {
overflow-x: auto;
border-radius: var(--container-border-radius);
}
/* This rule allows to have scrolling on the X axis. */
.item-decl .type-contents-toggle {
Expand Down Expand Up @@ -460,7 +468,7 @@ img {
.sidebar-resizing .sidebar {
position: fixed;
}
.sidebar-resizing > body {
.sidebar-resizing .rustdoc {
padding-left: var(--resizing-sidebar-width);
}

Expand Down Expand Up @@ -534,7 +542,7 @@ img {
scrollbar-width: initial;
scrollbar-color: var(--scrollbar-color);
}
.sidebar {
.sidebar, #rustdoc-toc section, #rustdoc-modnav section {
scrollbar-width: thin;
scrollbar-color: var(--scrollbar-color);
}
Expand All @@ -543,17 +551,24 @@ img {
::-webkit-scrollbar {
width: 12px;
}
.sidebar::-webkit-scrollbar {
.sidebar::-webkit-scrollbar,
#rustdoc-toc section::-webkit-scrollbar,
#rustdoc-modnav section::-webkit-scrollbar {
width: 8px;
}
::-webkit-scrollbar-track {
-webkit-box-shadow: inset 0;
background-color: var(--scrollbar-track-background-color);
}
.sidebar::-webkit-scrollbar-track {
.sidebar::-webkit-scrollbar-track,
#rustdoc-toc section::-webkit-scrollbar-track,
#rustdoc-modnav section::-webkit-scrollbar-track {
background-color: var(--scrollbar-track-background-color);
}
::-webkit-scrollbar-thumb, .sidebar::-webkit-scrollbar-thumb {
::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
#rustdoc-toc section::-webkit-scrollbar-thumb,
#rustdoc-modnav section::-webkit-scrollbar-thumb {
background-color: var(--scrollbar-thumb-background-color);
}

Expand Down Expand Up @@ -742,7 +757,7 @@ ul.block, .block li, .block ul {
overflow-wrap: break-word;
}

.sidebar-crate + .version {
.sidebar > .version {
margin-top: -1rem;
margin-bottom: 1rem;
}
Expand All @@ -760,7 +775,7 @@ ul.block, .block li, .block ul {
.rustdoc .example-wrap > pre,
.rustdoc .scraped-example .src-line-numbers,
.rustdoc .scraped-example .src-line-numbers > pre {
border-radius: 6px;
border-radius: var(--container-border-radius);
}

/*
Expand Down Expand Up @@ -2078,6 +2093,115 @@ However, it's not needed with smaller screen width because the doc/code block is

/* Media Queries */

/* Very-large-screen mode. */
@supports (display: grid) and (display: contents) {
@media (min-width: 1600px) {
.rustdoc:not(.src) {
display: grid;
grid-template-columns:
var(--desktop-sidebar-width)
var(--width-limiter-width)
minmax(0, 1fr);
grid-template-rows: min-content 1fr;
grid-template-areas:
"sidebar-title main sidebar-cratenav"
"sidebar-modnav main sidebar-toc";
grid-column-gap: var(--desktop-grid-column-gap);
}
.sidebar-resizing .rustdoc:not(.src) {
padding-left: 0;
}
.hide-sidebar .rustdoc:not(.src) {
grid-template-columns:
var(--width-limiter-width)
minmax(0, 1fr);
grid-template-rows: minmax(min-content, calc(64px + 0.75rem)) 1fr;
grid-template-areas:
"main sidebar-cratenav"
"main sidebar-toc";
padding-left: var(--desktop-grid-column-gap);
}
.rustdoc:not(.src) .sidebar,
.rustdoc:not(.src) main {
display: contents;
}
.width-limiter {
grid-area: main;
width: var(--width-limiter-width);
--desktop-sidebar-width: 0;
}
.rustdoc:not(.src) nav.sub {
padding-top: 10px;
}
.rustdoc:not(.src) .doc-sidebar-title {
grid-area: sidebar-title;
background: var(--sidebar-background-color);
position: sticky;
top: 0;
}
.rustdoc:not(.src) .sidebar-crate {
margin-bottom: 0.5rem;
}
.rustdoc:not(.src) #rustdoc-toc,
.rustdoc:not(.src) #rustdoc-cratenav {
grid-area: sidebar-toc;
background: var(--main-background-color);
padding-left: 0;
}
.rustdoc:not(.src) #rustdoc-cratenav {
grid-area: sidebar-cratenav;
align-self: middle;
}
.rustdoc:not(.src) #rustdoc-modnav {
grid-area: sidebar-modnav;
background: var(--sidebar-background-color);
padding-left: 0;
}
.rustdoc:not(.src) #rustdoc-modnav .in-crate {
display: none;
}
.rustdoc:not(.src) #rustdoc-toc section,
.rustdoc:not(.src) #rustdoc-modnav section {
position: sticky;
top: 0;
bottom: 0;
overflow-y: scroll;
overscroll-behavior: contain;
max-height: 100vh;
padding-left: 24px;
}
.rustdoc:not(.src) #rustdoc-toc .location,
.rustdoc:not(.src) #rustdoc-modnav h2 {
margin-top: 0;
}
.rustdoc:not(.src) #rustdoc-modnav section {
top: calc(64px + 0.75rem);
height: calc(100vh - 64px - 0.75rem);
background: var(--sidebar-background-color);
}
.rustdoc:not(.src) #rustdoc-modnav section.scrolled {
border-top: solid 1px var(--border-color);
}
.rustdoc:not(.src) #rustdoc-toc section {
max-height: calc(100vh - (2 * var(--desktop-grid-toc-top)));
top: var(--desktop-grid-toc-top);
margin: 0 var(--desktop-grid-column-gap) var(--desktop-grid-column-gap) 0;
border: solid 1px var(--border-color);
padding: 14px 0 14px var(--sidebar-elems-left-padding);
border-radius: var(--container-border-radius);
max-width: var(--desktop-grid-toc-max-width);
}
.rustdoc:not(.src) #rustdoc-cratenav .block:last-child,
.rustdoc:not(.src) #rustdoc-toc .block:last-child {
margin-bottom: 0;
}
.rustdoc:not(.src) #rustdoc-cratenav a:hover,
.rustdoc:not(.src) #rustdoc-toc a:hover {
background-color: var(--sidebar-background-color);
}
}
}

/* Make sure all the buttons line wrap at the same time */
@media (max-width: 850px) {
#search-tabs .count {
Expand Down
30 changes: 26 additions & 4 deletions src/librustdoc/html/static/js/main.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -499,7 +499,7 @@ function preLoadCss(cssUrl) {
if (!window.SIDEBAR_ITEMS) {
return;
}
const sidebar = document.getElementById("rustdoc-modnav");
const sidebar = document.querySelector("#rustdoc-modnav section");

/**
* Append to the sidebar a "block" of links - a heading along with a list (`<ul>`) of items.
Expand Down Expand Up @@ -539,8 +539,9 @@ function preLoadCss(cssUrl) {
const li = document.createElement("li");
// Don't "optimize" this to just use `path`.
// We want the browser to normalize this into an absolute URL.
if (link.href === current_page) {
li.classList.add("current");
if (link.href.toString() === current_page) {
link.className = "current";
li.className = "current";
}
li.appendChild(link);
ul.appendChild(li);
Expand Down Expand Up @@ -885,7 +886,7 @@ function preLoadCss(cssUrl) {
if (!window.ALL_CRATES) {
return;
}
const sidebarElems = document.getElementById("rustdoc-modnav");
const sidebarElems = document.querySelector("#rustdoc-modnav section");
if (!sidebarElems) {
return;
}
Expand Down Expand Up @@ -1549,6 +1550,23 @@ href="https://doc.rust-lang.org/${channel}/rustdoc/read-documentation/search.htm
// At half-way past the minimum size, vanish the sidebar entirely
const SIDEBAR_VANISH_THRESHOLD = SIDEBAR_MIN / 2;

// When running in grid layout mode, we have to change sizes
// on the parent element. Otherwise, we can resize the sidebar
// independently.
//
// This is less bad than it otherwise would be, since if you are in grid
// mode, resizing the sidebar will resize the floating TOC, not the huge
// content area.
let gridMode = window.getComputedStyle(document.querySelector(".rustdoc")).display === "grid";

// Scroll border between modnav and logo lockup (this is only used in gridmode).
const modNavSection = document.querySelector("#rustdoc-modnav section");
if (modNavSection) {
modNavSection.onscroll = function() {
(this.scrollTop === 0 ? removeClass : addClass)(this, "scrolled");
};
}

// Toolbar button to show the sidebar.
//
// On small, "mobile-sized" viewports, it's not persistent and it
Expand Down Expand Up @@ -1669,6 +1687,9 @@ href="https://doc.rust-lang.org/${channel}/rustdoc/read-documentation/search.htm
updateLocalStorage("desktop-sidebar-width", size);
sidebar.style.setProperty("--desktop-sidebar-width", size + "px");
resizer.style.setProperty("--desktop-sidebar-width", size + "px");
if (gridMode) {
document.documentElement.style.setProperty("--desktop-sidebar-width", size + "px");
}
}
}

Expand Down Expand Up @@ -1720,6 +1741,7 @@ href="https://doc.rust-lang.org/${channel}/rustdoc/read-documentation/search.htm
if (window.innerWidth < RUSTDOC_MOBILE_BREAKPOINT) {
return;
}
gridMode = window.getComputedStyle(document.querySelector(".rustdoc")).display === "grid";
stopResize();
if (desiredSidebarSize >= (window.innerWidth - BODY_MIN)) {
changeSidebarSize(window.innerWidth - BODY_MIN);
Expand Down
32 changes: 17 additions & 15 deletions src/librustdoc/html/templates/page.html
View file
Original file line number Diff line number Diff line change
Expand Up @@ -87,22 +87,24 @@
{% endif %}
<nav class="sidebar"> {# #}
{% if page.css_class != "src" %}
<div class="sidebar-crate">
{% if !layout.logo.is_empty() || page.rust_logo %}
<a class="logo-container" href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html"> {# #}
{% if page.rust_logo %}
<img class="rust-logo" src="{{static_root_path|safe}}{{files.rust_logo_svg}}" alt="logo"> {# #}
{% else if !layout.logo.is_empty() %}
<img src="{{layout.logo}}" alt="logo"> {# #}
<div class="doc-sidebar-title">
<div class="sidebar-crate">
{% if !layout.logo.is_empty() || page.rust_logo %}
<a class="logo-container" href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html"> {# #}
{% if page.rust_logo %}
<img class="rust-logo" src="{{static_root_path|safe}}{{files.rust_logo_svg}}" alt="logo"> {# #}
{% else if !layout.logo.is_empty() %}
<img src="{{layout.logo}}" alt="logo"> {# #}
{% endif %}
</a> {# #}
{% endif %}
</a> {# #}
{% endif %}
<h2> {# #}
<a href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html">{{display_krate|wrapped|safe}}</a> {# #}
{% if !display_krate_version_number.is_empty() %}
<span class="version">{{+ display_krate_version_number}}</span>
{% endif %}
</h2> {# #}
<h2> {# #}
<a href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html">{{display_krate|wrapped|safe}}</a> {# #}
{% if !display_krate_version_number.is_empty() %}
<span class="version">{{+ display_krate_version_number}}</span>
{% endif %}
</h2> {# #}
</div> {# #}
</div> {# #}
{% if !display_krate_version_extra.is_empty() %}
<div class="version">{{+ display_krate_version_extra}}</div> {# #}
Expand Down
23 changes: 13 additions & 10 deletions src/librustdoc/html/templates/sidebar.html
View file
Original file line number Diff line number Diff line change
@@ -1,12 +1,13 @@
<div class="sidebar-elems">
{% if is_crate %}
<ul class="block"> {# #}
{% if is_crate %}
<div class="sidebar-elems" id="rustdoc-cratenav">
<ul class="block">
<li><a id="all-types" href="all.html">All Items</a></li> {# #}
</ul>
{% endif %}

{% if self.should_render_blocks() %}
<section id="rustdoc-toc">
</div>
{% endif %}
{% if self.should_render_blocks() %}
<div class="sidebar-elems" id="rustdoc-toc">
<section>
{% if !title.is_empty() %}
<h2 class="location"> {# #}
<a href="#">{{title_prefix}}{{title|wrapped|safe}}</a> {# #}
Expand Down Expand Up @@ -52,12 +53,14 @@ <h3> {# #}
{% endif %}
{% endfor %}
</section>
{% endif %}
<div id="rustdoc-modnav">
</div>
{% endif %}
<div class="sidebar-elems" id="rustdoc-modnav">
<section>
{% if !path.is_empty() %}
<h2{% if parent_is_crate +%} class="in-crate"{% endif %}> {# #}
<a href="{% if is_mod %}../{% endif %}index.html">In {{+ path|wrapped|safe}}</a> {# #}
</h2>
{% endif %}
</div> {# #}
</section> {# #}
</div>
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