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Add theme selector
1 parent ee2f8cf commit b2b716f

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8 files changed

+212
-27
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8 files changed

+212
-27
lines changed

‎.gitignore

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@@ -5,3 +5,4 @@ site
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static/styles/vendor.css
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static/styles/app.css
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static/styles/fonts.css
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static/styles/noscript.css

‎src/lib.rs

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@@ -88,6 +88,7 @@ impl<'a> Generator<'a> {
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self.render_blog(blog)?;
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}
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self.compile_sass("app")?;
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self.compile_sass("noscript")?;
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self.compile_sass("fonts")?;
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self.concat_vendor_css(vec!["skeleton", "tachyons"])?;
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self.copy_static_files()?;

‎src/styles/app.scss

Lines changed: 74 additions & 19 deletions
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@@ -3,8 +3,10 @@
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$body-font: 'Fira Sans', Helvetica, Arial, sans-serif;
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$header-font: 'Alfa Slab One', serif;
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// Switching theme will only work if JavaScript is enabled as well
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// Default light theme
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:root {
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:root, :root:not([data-theme]) {
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--gray: #2a3439;
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--red: #a72145;
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--yellow: #ffc832;
@@ -23,27 +25,38 @@ $header-font: 'Alfa Slab One', serif;
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--nav-links-a: #2a3439;
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--publish-date-author: #2a3439;
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--section-header-h2-color: black;
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--theme-icon: #43484d;
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--theme-popup-border: #43484d;
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--theme-popup-bg: white;
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--theme-hover: #cacaca;
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--theme-choice-color: black;
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}
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// Dark theme
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@media (prefers-color-scheme: dark) {
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:root {
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--code-color: white;
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--code-bg-color: rgba(213, 203, 198, 0.05);
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--code-border-color: rgba(213, 203, 198, 0.25);
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--blockquote-color: rgb(195, 205, 210);
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--blockquote-bg-color: rgba(213, 203, 198, 0.05);
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--blockquote-left-border-color: rgb(195, 205, 210);
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--body-background-color: #181a1b;
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--body-foreground-color: #e8e6e3;
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--body-color: white;
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--div-brand-a-color: white;
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--white-elem-color: white;
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--white-elem-a: #d5cbc6;
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--nav-links-a: #d5cbc6;
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--publish-date-author: #d5cbc6;
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--section-header-h2-color: white;
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}
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:root[data-theme='dark'] {
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--gray: #2a3439;
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--red: #a72145;
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--yellow: #ffc832;
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--code-color: white;
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--code-bg-color: rgba(213, 203, 198, 0.05);
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--code-border-color: rgba(213, 203, 198, 0.25);
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--blockquote-color: rgb(195, 205, 210);
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--blockquote-bg-color: rgba(213, 203, 198, 0.05);
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--blockquote-left-border-color: rgb(195, 205, 210);
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--body-background-color: #181a1b;
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--body-foreground-color: #e8e6e3;
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--body-color: white;
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--div-brand-a-color: white;
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--white-elem-color: white;
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--white-elem-a: #d5cbc6;
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--nav-links-a: #d5cbc6;
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--publish-date-author: #d5cbc6;
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--section-header-h2-color: white;
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--theme-icon: #43484d;
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--theme-popup-border: #43484d;
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--theme-popup-bg: #141617;
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--theme-hover: #474c51;
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--theme-choice-color: #d5cbc6;
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}
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4962
html {
@@ -363,3 +376,45 @@ header h1 {
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border-top-left-radius: 0;
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}
365378
}
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// Theme switch popup
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// theme selector visible only if JavaScript is available
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.theme-icon {
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display: none;
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line-height: 2em;
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border: 2px solid var(--theme-icon);
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border-radius: 5px;
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padding: 0px 5px;
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color: var(--theme-choice-color);
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&:hover {
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color: var(--theme-choice-color);
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}
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}
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#theme-choice {
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display: none;
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border: 2px solid var(--theme-popup-border);
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border-radius: 5px;
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color: var(--theme-choice-color);
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background: var(--theme-popup-bg);
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position: absolute;
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list-style: none;
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font-weight: 400;
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padding: 0px;
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// counterbalance vendored skeleton.css
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margin: 0.2em -0.5em;
407+
}
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409+
.theme-item {
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padding: 0px 5px;
411+
}
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413+
#theme-choice.showThemeDropdown {
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display: block;
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z-index: 1;
416+
}
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418+
li.theme-item:hover {
419+
background-color: var(--theme-hover);
420+
}

‎src/styles/noscript.scss

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@@ -0,0 +1,53 @@
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// This stylesheet is used when the user agent has no JavaScript capabilities (or has it disabled)
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// Sets dark theme according to user agent preferences
3+
4+
// Default light theme
5+
:root, :root:not([data-theme]) {
6+
--gray: #2a3439;
7+
--red: #a72145;
8+
--yellow: #ffc832;
9+
--code-color: black;
10+
--code-bg-color: rgba(42, 52, 57, 0.05);
11+
--code-border-color: rgba(42, 52, 57, 0.25);
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--blockquote-color: black;
13+
--blockquote-bg-color: rgb(247, 249, 249);
14+
--blockquote-left-border-color: rgb(195, 205, 210);
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--body-background-color: white;
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--body-foreground-color: white;
17+
--body-color: rgb(34,34,34);
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--div-brand-a-color: black;
19+
--white-elem-color: black;
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--white-a: #2a3439;
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--nav-links-a: #2a3439;
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--publish-date-author: #2a3439;
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--section-header-h2-color: black;
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}
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26+
// Dark theme (probed from user prefs)
27+
@media (prefers-color-scheme: dark) {
28+
:root, :root:not([data-theme]) {
29+
--gray: #2a3439;
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--red: #a72145;
31+
--yellow: #ffc832;
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--code-color: white;
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--code-bg-color: rgba(213, 203, 198, 0.05);
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--code-border-color: rgba(213, 203, 198, 0.25);
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--blockquote-color: rgb(195, 205, 210);
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--blockquote-bg-color: rgba(213, 203, 198, 0.05);
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--blockquote-left-border-color: rgb(195, 205, 210);
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--body-background-color: #181a1b;
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--body-foreground-color: #e8e6e3;
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--body-color: white;
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--div-brand-a-color: white;
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--white-elem-color: white;
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--white-elem-a: #d5cbc6;
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--nav-links-a: #d5cbc6;
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--publish-date-author: #d5cbc6;
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--section-header-h2-color: white;
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}
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}
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50+
// Don't show the theme selector button when JavaScript is disabled
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#theme-icon {
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display: none !important;
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}

‎static/scripts/theme-switch.js

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@@ -0,0 +1,63 @@
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"use strict";
2+
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function changeThemeTo(val) {
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document.documentElement.setAttribute("data-theme", val);
5+
// save theme prefs in the browser
6+
if (storageAvailable("localStorage")) {
7+
localStorage.setItem("blog-rust-lang-org-theme", val);
8+
}
9+
// the theme dropdown will close itself when returning to the dropdown() caller
10+
}
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12+
function dropdown () {
13+
document.getElementById("theme-choice").classList.toggle("showThemeDropdown");
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}
15+
16+
// courtesy MDN
17+
function storageAvailable(type) {
18+
let storage;
19+
try {
20+
storage = window[type];
21+
const x = "__storage_test__";
22+
storage.setItem(x, x);
23+
storage.removeItem(x);
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return true;
25+
} catch (e) {
26+
return (
27+
e instanceof DOMException &&
28+
e.name === "QuotaExceededError" &&
29+
// acknowledge QuotaExceededError only if there's something already stored
30+
storage &&
31+
storage.length !== 0
32+
);
33+
}
34+
}
35+
36+
function handleBlur(event) {
37+
const parent = document.getElementById("theme-choice");
38+
if (!parent.contains(document.activeElement) &&
39+
!parent.contains(event.relatedTarget) &&
40+
parent.classList.contains("showThemeDropdown")
41+
) {
42+
console.debug('Closing the dropdown');
43+
parent.classList.remove("showThemeDropdown");
44+
}
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}
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47+
// close the theme dropdown if clicking somewhere else
48+
document.querySelector('.theme-icon').onblur = handleBlur;
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50+
// Check for saved user preference on load, else check and save user agent prefs
51+
let savedTheme = null;
52+
if (storageAvailable("localStorage")) {
53+
savedTheme = localStorage.getItem("blog-rust-lang-org-theme");
54+
}
55+
if (savedTheme) {
56+
document.documentElement.setAttribute("data-theme", savedTheme);
57+
} else if (window.matchMedia("(prefers-color-scheme: dark)").matches) {
58+
document.documentElement.setAttribute("data-theme", "dark");
59+
localStorage.setItem("blog-rust-lang-org-theme", "dark");
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}
61+
62+
// show the theme selector only if JavaScript is enabled/available
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document.querySelector('.theme-icon').style.display = 'block';

‎templates/footer.hbs

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@@ -44,3 +44,4 @@
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<!-- scripts -->
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<script src="{{root}}scripts/highlight.js"></script>
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<script src="{{root}}scripts/theme-switch.js"></script>

‎templates/headers.hbs

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@@ -1,9 +1,9 @@
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<!-- Twitter card -->
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<meta name="twitter:card" content="summary">
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<meta name="twitter:site" content="@rustlang">
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<meta name="twitter:creator" content="@rustlang">
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<meta name="twitter:title" content="{{title}}">
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<meta name="twitter:description" content="{{blog.description}}">
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<!-- Twitter card -->
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<meta name="twitter:card" content="summary">
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<meta name="twitter:site" content="@rustlang">
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<meta name="twitter:creator" content="@rustlang">
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<meta name="twitter:title" content="{{title}}">
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<meta name="twitter:description" content="{{blog.description}}">
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<meta name="twitter:image" content="https://www.rust-lang.org/static/images/rust-social.jpg">
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<!-- Facebook OpenGraph -->
@@ -19,6 +19,11 @@
1919
<link rel="stylesheet" href="{{root}}styles/app.css"/>
2020
<link rel="stylesheet" href="{{root}}styles/highlight.css"/>
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<!-- stylesheet for user agents without js -->
23+
<noscript>
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<link rel="stylesheet" href="{{root}}styles/noscript.css">
25+
</noscript>
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<!-- favicon -->
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<link rel="apple-touch-icon" sizes="180x180" href="{{root}}images/apple-touch-icon.png">
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<link rel="icon" type="image/png" sizes="16x16" href="{{root}}images/favicon-16x16.png">
@@ -29,5 +34,5 @@
2934
<meta name="msapplication-TileColor" content="#00aba9">
3035
<meta name="theme-color" content="#ffffff">
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32-
<!-- atom -->
33-
<link type="application/atom+xml" rel="alternate" href="https://blog.rust-lang.org/{{blog.prefix}}feed.xml" title="{{blog.title}}" />
37+
<!-- atom -->
38+
<link type="application/atom+xml" rel="alternate" href="https://blog.rust-lang.org/{{blog.prefix}}feed.xml" title="{{blog.title}}" />

‎templates/nav.hbs

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@@ -13,5 +13,11 @@
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<li class="tc pv2 ph2 ph4-ns flex-20-s"><a href="https://www.rust-lang.org/tools">Tools</a></li>
1414
<li class="tc pv2 ph2 ph4-ns flex-20-s"><a href="https://www.rust-lang.org/governance">Governance</a></li>
1515
<li class="tc pv2 ph2 ph4-ns flex-20-s"><a href="https://www.rust-lang.org/community">Community</a></li>
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<button class="theme-icon" onclick="dropdown();">🖌
17+
<ul id="theme-choice">
18+
<li class="theme-item" onclick="changeThemeTo('light');">Light</li>
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<li class="theme-item" onclick="changeThemeTo('dark');">Dark</li>
20+
</ul>
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</button>
1622
</ul>
1723
</nav>

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