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drustdoc: add three-column layout for large desktops
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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+186
-53
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7 files changed

+186
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‎src/librustdoc/html/static/css/rustdoc.css

+122-8
Original file line numberDiff line numberDiff line change
@@ -15,6 +15,8 @@
1515
--desktop-sidebar-width: 200px;
1616
--src-sidebar-width: 300px;
1717
--desktop-sidebar-z-index: 100;
18+
--width-limiter-width: 960px;
19+
--desktop-grid-column-gap: 45px;
1820
}
1921

2022
/* See FiraSans-LICENSE.txt for the Fira Sans license. */
@@ -317,7 +319,7 @@ button#toggle-all-docs {
317319
main {
318320
position: relative;
319321
flex-grow: 1;
320-
padding: 10px 15px 40px 45px;
322+
padding: 10px 15px 40px var(--desktop-grid-column-gap);
321323
min-width: 0; /* avoid growing beyond the size limit */
322324
}
323325

@@ -326,7 +328,7 @@ main {
326328
}
327329

328330
.width-limiter {
329-
max-width: 960px;
331+
max-width: var(--width-limiter-width);
330332
margin-right: auto;
331333
}
332334

@@ -441,7 +443,7 @@ img {
441443
.sidebar-resizing .sidebar {
442444
position: fixed;
443445
}
444-
.sidebar-resizing > body {
446+
.sidebar-resizing .rustdoc {
445447
padding-left: var(--resizing-sidebar-width);
446448
}
447449

@@ -515,7 +517,7 @@ img {
515517
scrollbar-width: initial;
516518
scrollbar-color: var(--scrollbar-color);
517519
}
518-
.sidebar {
520+
.sidebar, #TOC section, #ModNav section {
519521
scrollbar-width: thin;
520522
scrollbar-color: var(--scrollbar-color);
521523
}
@@ -524,17 +526,24 @@ img {
524526
::-webkit-scrollbar {
525527
width: 12px;
526528
}
527-
.sidebar::-webkit-scrollbar {
529+
.sidebar::-webkit-scrollbar,
530+
#TOC section::-webkit-scrollbar,
531+
#ModNav section::-webkit-scrollbar {
528532
width: 8px;
529533
}
530534
::-webkit-scrollbar-track {
531535
-webkit-box-shadow: inset 0;
532536
background-color: var(--scrollbar-track-background-color);
533537
}
534-
.sidebar::-webkit-scrollbar-track {
538+
.sidebar::-webkit-scrollbar-track,
539+
#TOC section::-webkit-scrollbar-track,
540+
#ModNav section::-webkit-scrollbar-track {
535541
background-color: var(--scrollbar-track-background-color);
536542
}
537-
::-webkit-scrollbar-thumb, .sidebar::-webkit-scrollbar-thumb {
543+
::-webkit-scrollbar-thumb,
544+
.sidebar::-webkit-scrollbar-thumb,
545+
#TOC section::-webkit-scrollbar-thumb,
546+
#ModNav section::-webkit-scrollbar-thumb {
538547
background-color: var(--scrollbar-thumb-background-color);
539548
}
540549

@@ -675,7 +684,7 @@ ul.block, .block li, .block ul {
675684
overflow-wrap: break-word;
676685
}
677686

678-
.sidebar-crate + .version {
687+
.sidebar > .version {
679688
margin-top: -1rem;
680689
margin-bottom: 1rem;
681690
}
@@ -1853,6 +1862,111 @@ However, it's not needed with smaller screen width because the doc/code block is
18531862

18541863
/* Media Queries */
18551864

1865+
/* Very-large-screen mode. */
1866+
@supports (display: grid) and (display: contents) {
1867+
@media (min-width: 1600px) and (min-height: 800px) {
1868+
.rustdoc:not(.src) {
1869+
display: grid;
1870+
grid-template-columns:
1871+
var(--desktop-sidebar-width)
1872+
var(--width-limiter-width)
1873+
minmax(0, 1fr);
1874+
grid-template-rows: min-content 1fr;
1875+
grid-template-areas:
1876+
"sidebar-title main sidebar-cratenav"
1877+
"sidebar-modnav main sidebar-toc";
1878+
grid-column-gap: var(--desktop-grid-column-gap);
1879+
}
1880+
.sidebar-resizing .rustdoc:not(.src) {
1881+
padding-left: 0;
1882+
}
1883+
.hide-sidebar .rustdoc:not(.src) {
1884+
grid-template-columns:
1885+
var(--width-limiter-width)
1886+
minmax(0, 1fr);
1887+
grid-template-rows: minmax(min-content, calc(64px + 0.75rem)) 1fr;
1888+
grid-template-areas:
1889+
"main sidebar-cratenav"
1890+
"main sidebar-toc";
1891+
padding-left: var(--desktop-grid-column-gap);
1892+
}
1893+
.rustdoc:not(.src) .sidebar,
1894+
.rustdoc:not(.src) main {
1895+
display: contents;
1896+
}
1897+
.width-limiter {
1898+
grid-area: main;
1899+
width: var(--width-limiter-width);
1900+
--desktop-sidebar-width: 0;
1901+
}
1902+
.rustdoc:not(.src) nav.sub {
1903+
padding-top: 10px;
1904+
}
1905+
.rustdoc:not(.src) .doc-sidebar-title {
1906+
grid-area: sidebar-title;
1907+
background: var(--sidebar-background-color);
1908+
position: sticky;
1909+
top: 0;
1910+
}
1911+
.rustdoc:not(.src) .sidebar-crate {
1912+
margin-bottom: 0.5rem;
1913+
}
1914+
.rustdoc:not(.src) #TOC,
1915+
.rustdoc:not(.src) #CrateNav {
1916+
grid-area: sidebar-toc;
1917+
background: var(--main-background-color);
1918+
padding-left: 0;
1919+
}
1920+
.rustdoc:not(.src) #CrateNav {
1921+
grid-area: sidebar-cratenav;
1922+
align-self: middle;
1923+
}
1924+
.rustdoc:not(.src) #ModNav {
1925+
grid-area: sidebar-modnav;
1926+
background: var(--sidebar-background-color);
1927+
padding-left: 0;
1928+
}
1929+
.rustdoc:not(.src) #ModNav .in-crate {
1930+
display: none;
1931+
}
1932+
.rustdoc:not(.src) #TOC section,
1933+
.rustdoc:not(.src) #ModNav section {
1934+
position: sticky;
1935+
top: 0;
1936+
bottom: 0;
1937+
overflow-y: scroll;
1938+
overscroll-behavior: contain;
1939+
max-height: 100vh;
1940+
padding-left: 24px;
1941+
}
1942+
.rustdoc:not(.src) #TOC .location,
1943+
.rustdoc:not(.src) #ModNav h2 {
1944+
margin-top: 0;
1945+
}
1946+
.rustdoc:not(.src) #ModNav section {
1947+
top: calc(64px + 0.75rem);
1948+
max-height: calc(100vh - 64px - 0.75rem);
1949+
background: var(--sidebar-background-color);
1950+
border-top: solid 1px var(--border-color);
1951+
}
1952+
.rustdoc:not(.src) #TOC section {
1953+
max-height: calc(100vh - 0.5rem);
1954+
top: 0.25rem;
1955+
margin: 0 var(--desktop-grid-column-gap) var(--desktop-grid-column-gap) 0;
1956+
border: solid 1px var(--border-color);
1957+
padding: 0.25rem;
1958+
}
1959+
.rustdoc:not(.src) #CrateNav .block:last-child,
1960+
.rustdoc:not(.src) #TOC .block:last-child {
1961+
margin-bottom: 0;
1962+
}
1963+
.rustdoc:not(.src) #CrateNav a:hover,
1964+
.rustdoc:not(.src) #TOC a:hover {
1965+
background-color: var(--sidebar-background-color);
1966+
}
1967+
}
1968+
}
1969+
18561970
/* Make sure all the buttons line wrap at the same time */
18571971
@media (max-width: 850px) {
18581972
#search-tabs .count {

‎src/librustdoc/html/static/js/main.js

+19-5
Original file line numberDiff line numberDiff line change
@@ -460,7 +460,7 @@ function preLoadCss(cssUrl) {
460460
if (!window.SIDEBAR_ITEMS) {
461461
return;
462462
}
463-
const sidebar = document.getElementById("ModNav");
463+
const sidebar = document.querySelector("#ModNav section");
464464

465465
/**
466466
* Append to the sidebar a "block" of links - a heading along with a list (`<ul>`) of items.
@@ -496,11 +496,12 @@ function preLoadCss(cssUrl) {
496496
}
497497
const link = document.createElement("a");
498498
link.href = path;
499-
if (path === current_page) {
500-
link.className = "current";
501-
}
502499
link.textContent = name;
503500
const li = document.createElement("li");
501+
if (link.href.toString() === current_page) {
502+
link.className = "current";
503+
li.className = "current";
504+
}
504505
li.appendChild(link);
505506
ul.appendChild(li);
506507
}
@@ -845,7 +846,7 @@ function preLoadCss(cssUrl) {
845846
if (!window.ALL_CRATES) {
846847
return;
847848
}
848-
const sidebarElems = document.getElementById("ModNav");
849+
const sidebarElems = document.querySelector("#ModNav section");
849850
if (!sidebarElems) {
850851
return;
851852
}
@@ -1511,6 +1512,15 @@ href="https://doc.rust-lang.org/${channel}/rustdoc/read-documentation/search.htm
15111512
// At half-way past the minimum size, vanish the sidebar entirely
15121513
const SIDEBAR_VANISH_THRESHOLD = SIDEBAR_MIN / 2;
15131514

1515+
// When running in grid layout mode, we have to change sizes
1516+
// on the parent element. Otherwise, we can resize the sidebar
1517+
// independently.
1518+
//
1519+
// This is less bad than it otherwise would be, since if you are in grid
1520+
// mode, resizing the sidebar will resize the floating TOC, not the huge
1521+
// content area.
1522+
let gridMode = window.getComputedStyle(document.querySelector(".rustdoc")).display === "grid";
1523+
15141524
// Toolbar button to show the sidebar.
15151525
//
15161526
// On small, "mobile-sized" viewports, it's not persistent and it
@@ -1631,6 +1641,9 @@ href="https://doc.rust-lang.org/${channel}/rustdoc/read-documentation/search.htm
16311641
updateLocalStorage("desktop-sidebar-width", size);
16321642
sidebar.style.setProperty("--desktop-sidebar-width", size + "px");
16331643
resizer.style.setProperty("--desktop-sidebar-width", size + "px");
1644+
if (gridMode) {
1645+
document.documentElement.style.setProperty("--desktop-sidebar-width", size + "px");
1646+
}
16341647
}
16351648
}
16361649

@@ -1682,6 +1695,7 @@ href="https://doc.rust-lang.org/${channel}/rustdoc/read-documentation/search.htm
16821695
if (window.innerWidth < RUSTDOC_MOBILE_BREAKPOINT) {
16831696
return;
16841697
}
1698+
gridMode = window.getComputedStyle(document.querySelector(".rustdoc")).display === "grid";
16851699
stopResize();
16861700
if (desiredSidebarSize >= (window.innerWidth - BODY_MIN)) {
16871701
changeSidebarSize(window.innerWidth - BODY_MIN);

‎src/librustdoc/html/templates/page.html

+17-15
Original file line numberDiff line numberDiff line change
@@ -91,22 +91,24 @@
9191
{% endif %}
9292
<nav class="sidebar"> {# #}
9393
{% if page.css_class != "src" %}
94-
<div class="sidebar-crate">
95-
{% if !layout.logo.is_empty() || page.rust_logo %}
96-
<a class="logo-container" href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html"> {# #}
97-
{% if page.rust_logo %}
98-
<img class="rust-logo" src="{{static_root_path|safe}}{{files.rust_logo_svg}}" alt="logo"> {# #}
99-
{% else if !layout.logo.is_empty() %}
100-
<img src="{{layout.logo}}" alt="logo"> {# #}
94+
<div class="doc-sidebar-title">
95+
<div class="sidebar-crate">
96+
{% if !layout.logo.is_empty() || page.rust_logo %}
97+
<a class="logo-container" href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html"> {# #}
98+
{% if page.rust_logo %}
99+
<img class="rust-logo" src="{{static_root_path|safe}}{{files.rust_logo_svg}}" alt="logo"> {# #}
100+
{% else if !layout.logo.is_empty() %}
101+
<img src="{{layout.logo}}" alt="logo"> {# #}
102+
{% endif %}
103+
</a> {# #}
101104
{% endif %}
102-
</a> {# #}
103-
{% endif %}
104-
<h2> {# #}
105-
<a href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html">{{display_krate}}</a> {# #}
106-
{% if !display_krate_version_number.is_empty() %}
107-
<span class="version">{{+ display_krate_version_number}}</span>
108-
{% endif %}
109-
</h2> {# #}
105+
<h2> {# #}
106+
<a href="{{page.root_path|safe}}{{display_krate_with_trailing_slash|safe}}index.html">{{display_krate}}</a> {# #}
107+
{% if !display_krate_version_number.is_empty() %}
108+
<span class="version">{{+ display_krate_version_number}}</span>
109+
{% endif %}
110+
</h2> {# #}
111+
</div> {# #}
110112
</div> {# #}
111113
{% if !display_krate_version_extra.is_empty() %}
112114
<div class="version">{{+ display_krate_version_extra}}</div> {# #}

‎src/librustdoc/html/templates/sidebar.html

+12-9
Original file line numberDiff line numberDiff line change
@@ -1,12 +1,13 @@
1-
<div class="sidebar-elems">
2-
{% if is_crate %}
1+
{% if is_crate %}
2+
<div class="sidebar-elems" id="CrateNav">
33
<ul class="block">
44
<li><a id="all-types" href="all.html">All Items</a></li> {# #}
55
</ul>
6-
{% endif %}
7-
8-
{% if self.should_render_blocks() %}
9-
<section id="TOC">
6+
</div>
7+
{% endif %}
8+
{% if self.should_render_blocks() %}
9+
<div class="sidebar-elems" id="TOC">
10+
<section>
1011
{% if !title.is_empty() %}
1112
<h2 class="location"> {# #}
1213
<a href="#">{{title_prefix}}{{title}}</a> {# #}
@@ -38,12 +39,14 @@ <h3> {# #}
3839
{% endif %}
3940
{% endfor %}
4041
</section>
41-
{% endif %}
42-
<div id="ModNav">
42+
</div>
43+
{% endif %}
44+
<div class="sidebar-elems" id="ModNav">
45+
<section>
4346
{% if !path.is_empty() %}
4447
<h2{% if parent_is_crate +%} class="in-crate"{% endif %}> {# #}
4548
<a href="{% if is_mod %}../{% endif %}index.html">In {{+ path}}</a> {# #}
4649
</h2> {# #}
4750
{% endif %}
48-
</div> {# #}
51+
</section> {# #}
4952
</div>

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