diff --git a/_includes/toc-status.html b/_includes/toc-status.html new file mode 100644 index 0000000..4b71cae --- /dev/null +++ b/_includes/toc-status.html @@ -0,0 +1,10 @@ +{% comment %} + Determine TOC state and return it through variable "enable_toc" +{% endcomment %} + +{% assign enable_toc = false %} +{% if site.toc and page.toc %} + {% if page.content contains ' +

{{- site.data.locales[include.lang].panel.toc -}}

diff --git a/_javascript/modules/components/toc.js b/_javascript/modules/components/toc.js index 56ce26f..765336a 100644 --- a/_javascript/modules/components/toc.js +++ b/_javascript/modules/components/toc.js @@ -1,15 +1,30 @@ -export function toc() { - if (document.querySelector('main h2, main h3')) { - // see: https://github.com/tscanlin/tocbot#usage - tocbot.init({ - tocSelector: '#toc', - contentSelector: '.content', - ignoreSelector: '[data-toc-skip]', - headingSelector: 'h2, h3, h4', - orderedList: false, - scrollSmooth: false - }); +import { TocMobile as mobile } from './toc/toc-mobile'; +import { TocDesktop as desktop } from './toc/toc-desktop'; - document.getElementById('toc-wrapper').classList.remove('d-none'); +const desktopMode = matchMedia('(min-width: 1200px)'); + +function refresh(e) { + if (e.matches) { + mobile.hidePopup(); + desktop.refresh(); + } else { + mobile.refresh(); } } + +function init() { + if (document.querySelector('main>article[data-toc="true"]') === null) { + return; + } + + // Avoid create multiple instances of Tocbot. Ref: + if (desktopMode.matches) { + desktop.init(); + } else { + mobile.init(); + } + + desktopMode.onchange = refresh; +} + +export { init as initToc }; diff --git a/_javascript/modules/components/toc/toc-desktop.js b/_javascript/modules/components/toc/toc-desktop.js new file mode 100644 index 0000000..5021a72 --- /dev/null +++ b/_javascript/modules/components/toc/toc-desktop.js @@ -0,0 +1,22 @@ +export class TocDesktop { + /* Tocbot options Ref: https://github.com/tscanlin/tocbot#usage */ + static options = { + tocSelector: '#toc', + contentSelector: '.content', + ignoreSelector: '[data-toc-skip]', + headingSelector: 'h2, h3, h4', + orderedList: false, + scrollSmooth: false, + headingsOffset: 16 * 2 // 2rem + }; + + static refresh() { + tocbot.refresh(this.options); + } + + static init() { + if (document.getElementById('toc-wrapper')) { + tocbot.init(this.options); + } + } +} diff --git a/_javascript/modules/components/toc/toc-mobile.js b/_javascript/modules/components/toc/toc-mobile.js new file mode 100644 index 0000000..48b372d --- /dev/null +++ b/_javascript/modules/components/toc/toc-mobile.js @@ -0,0 +1,117 @@ +/** + * TOC button, topbar and popup for mobile devices + */ + +const $tocBar = document.getElementById('toc-bar'); +const $soloTrigger = document.getElementById('toc-solo-trigger'); +const $triggers = document.getElementsByClassName('toc-trigger'); +const $popup = document.getElementById('toc-popup'); +const $btnClose = document.getElementById('toc-popup-close'); + +const SCROLL_LOCK = 'overflow-hidden'; +const CLOSING = 'closing'; + +export class TocMobile { + static invisible = true; + static barHeight = 16 * 3; // 3rem + + static options = { + tocSelector: '#toc-popup-content', + contentSelector: '.content', + ignoreSelector: '[data-toc-skip]', + headingSelector: 'h2, h3, h4', + orderedList: false, + scrollSmooth: false, + collapseDepth: 4, + headingsOffset: this.barHeight + }; + + static initBar() { + const observer = new IntersectionObserver( + (entries) => { + entries.forEach((entry) => { + $tocBar.classList.toggle('invisible', entry.isIntersecting); + }); + }, + { rootMargin: `-${this.barHeight}px 0px 0px 0px` } + ); + + observer.observe($soloTrigger); + this.invisible = false; + } + + static listenAnchors() { + const $anchors = document.getElementsByClassName('toc-link'); + [...$anchors].forEach((anchor) => { + anchor.onclick = this.hidePopup; + }); + } + + static refresh() { + if (this.invisible) { + this.initComponents(); + } + tocbot.refresh(this.options); + this.listenAnchors(); + } + + static showPopup() { + TocMobile.lockScroll(true); + $popup.showModal(); + const activeItem = $popup.querySelector('li.is-active-li'); + activeItem.scrollIntoView({ block: 'center' }); + } + + static hidePopup() { + if (!$popup.open) { + return; + } + + $popup.toggleAttribute(CLOSING); + + $popup.addEventListener( + 'animationend', + () => { + $popup.toggleAttribute(CLOSING); + $popup.close(); + }, + { once: true } + ); + + TocMobile.lockScroll(false); + } + + static lockScroll(enable) { + document.documentElement.classList.toggle(SCROLL_LOCK, enable); + document.body.classList.toggle(SCROLL_LOCK, enable); + } + + static clickBackdrop(event) { + const rect = event.target.getBoundingClientRect(); + if ( + event.clientX < rect.left || + event.clientX > rect.right || + event.clientY < rect.top || + event.clientY > rect.bottom + ) { + TocMobile.hidePopup(); + } + } + + static initComponents() { + this.initBar(); + + [...$triggers].forEach((trigger) => { + trigger.onclick = this.showPopup; + }); + + $popup.onclick = this.clickBackdrop; + $btnClose.onclick = $popup.oncancel = this.hidePopup; + } + + static init() { + tocbot.init(this.options); + this.listenAnchors(); + this.initComponents(); + } +} diff --git a/_javascript/modules/plugins.js b/_javascript/modules/plugins.js index fb892e2..cc95c1b 100644 --- a/_javascript/modules/plugins.js +++ b/_javascript/modules/plugins.js @@ -3,4 +3,4 @@ export { initClipboard } from './components/clipboard'; export { loadImg } from './components/img-loading'; export { imgPopup } from './components/img-popup'; export { initLocaleDatetime } from './components/locale-datetime'; -export { toc } from './components/toc'; +export { initToc } from './components/toc'; diff --git a/_javascript/post.js b/_javascript/post.js index 9340f05..1c616ec 100644 --- a/_javascript/post.js +++ b/_javascript/post.js @@ -1,14 +1,15 @@ -import { basic, initSidebar, initTopbar } from './modules/layouts'; +import { basic, initTopbar, initSidebar } from './modules/layouts'; + import { loadImg, imgPopup, initLocaleDatetime, initClipboard, - toc + initToc } from './modules/plugins'; loadImg(); -toc(); +initToc(); imgPopup(); initSidebar(); initLocaleDatetime(); diff --git a/_layouts/post.html b/_layouts/post.html index f17ceea..bcc133f 100644 --- a/_layouts/post.html +++ b/_layouts/post.html @@ -11,7 +11,9 @@ tail_includes: {% include lang.html %} -
+{% include toc-status.html %} + +

{{ page.title }}

{% if page.description %} @@ -95,6 +97,30 @@ tail_includes:
+ {% if enable_toc %} + + + + + +
+
{{- page.title -}}
+ +
+
+ + {% endif %} +
{{ content }}
diff --git a/_sass/addon/commons.scss b/_sass/addon/commons.scss index e2a0e61..e332f21 100644 --- a/_sass/addon/commons.scss +++ b/_sass/addon/commons.scss @@ -908,9 +908,7 @@ $btn-mb: 0.5rem; } #topbar { - button i { - color: #999999; - } + @extend %btn-color; #breadcrumb { font-size: 1rem; diff --git a/_sass/addon/module.scss b/_sass/addon/module.scss index 42db4e2..34ac67b 100644 --- a/_sass/addon/module.scss +++ b/_sass/addon/module.scss @@ -8,6 +8,7 @@ color: var(--heading-color); font-weight: 400; font-family: $font-family-heading; + scroll-margin-top: 3.5rem; } %anchor { @@ -134,6 +135,12 @@ } } +%btn-color { + button i { + color: #999999; + } +} + /* ---------- scss mixin --------- */ @mixin mt-mb($value) { diff --git a/_sass/colors/typography-dark.scss b/_sass/colors/typography-dark.scss index 12427ec..664c936 100644 --- a/_sass/colors/typography-dark.scss +++ b/_sass/colors/typography-dark.scss @@ -22,7 +22,6 @@ --btn-border-color: #2e2f31; --btn-backtotop-color: var(--text-color); --btn-backtotop-border-color: #212122; - --btn-box-shadow: var(--main-bg); --card-header-bg: #292929; --checkbox-color: rgb(118, 120, 121); --checkbox-checked-color: var(--link-color); @@ -60,6 +59,7 @@ /* Posts */ --toc-highlight: rgb(116, 178, 243); + --toc-popup-border-color: #373737; --tag-hover: rgb(43, 56, 62); --tb-odd-bg: #252526; /* odd rows of the posts' table */ --tb-even-bg: rgb(31, 31, 34); /* even rows of the posts' table */ diff --git a/_sass/colors/typography-light.scss b/_sass/colors/typography-light.scss index 7800074..b6fc561 100644 --- a/_sass/colors/typography-light.scss +++ b/_sass/colors/typography-light.scss @@ -22,7 +22,6 @@ --btn-border-color: #e9ecef; --btn-backtotop-color: #686868; --btn-backtotop-border-color: #f1f1f1; - --btn-box-shadow: #eaeaea; --checkbox-color: #c5c5c5; --checkbox-checked-color: #07a8f7; --img-bg: radial-gradient( @@ -63,6 +62,7 @@ /* Posts */ --toc-highlight: #0550ae; + --toc-popup-border-color: lightgray; --btn-share-color: gray; --btn-share-hover-color: #0d6efd; --card-bg: white; diff --git a/_sass/layout/post.scss b/_sass/layout/post.scss index 815db93..be72700 100644 --- a/_sass/layout/post.scss +++ b/_sass/layout/post.scss @@ -228,6 +228,7 @@ header { } } +/* TOC panel */ #toc-wrapper { border-left: 1px solid rgba(158, 158, 158, 0.17); position: -webkit-sticky; @@ -290,6 +291,201 @@ header { } } +/* --- TOC button, bar and popup in mobile/tablet --- */ + +#toc-bar { + position: -webkit-sticky; + position: sticky; + top: 0; + z-index: 1; + margin: 0 -1rem; + height: $topbar-height; + background: var(--main-bg); + border-bottom: 1px solid var(--main-border-color); + transition: all 0.2s ease-in-out; + + @extend %btn-color; + + .label { + @extend %heading; + + margin-left: 0.25rem; + padding: 0 0.75rem; + color: inherit; + } + + &.invisible { + top: -$topbar-height; + transition: none; + } +} + +#toc-solo-trigger { + color: var(--text-muted-color); + border-color: var(--btn-border-color); + border-radius: $radius-lg; + + .label { + font-size: 1rem; + font-family: $font-family-heading; + } + + &:hover { + box-shadow: none; + background: none; + } +} + +@mixin slide-in { + from { + opacity: 0.7; + transform: translateY(-$topbar-height); + } + + to { + opacity: 1; + transform: translateY(0); + } +} + +@mixin slide-out { + 0% { + transform: translateY(0); + opacity: 1; + } + + 100% { + transform: translateY(-$topbar-height); + opacity: 0; + } +} + +@-webkit-keyframes slide-in { + @include slide-in; +} + +@keyframes slide-in { + @include slide-in; +} + +@-webkit-keyframes slide-out { + @include slide-out; +} + +@keyframes slide-out { + @include slide-out; +} + +#toc-popup { + $slide-in: slide-in 0.3s ease-out; + $slide-out: slide-out 0.3s ease-out; + $curtain-height: 2rem; + + border-color: var(--toc-popup-border-color); + border-width: 1px; + border-radius: $radius-lg; + color: var(--text-color); + background: var(--main-bg); + margin-top: $topbar-height; + min-width: 20rem; + font-size: 1.05rem; + + @media all and (min-width: 576px) { + max-width: 32rem; + } + + &[open] { + -webkit-animation: $slide-in; + animation: $slide-in; + } + + &[closing] { + -webkit-animation: $slide-out; + animation: $slide-out; + } + + @media all and (min-width: 850px) { + left: $sidebar-width; + } + + .header { + @extend %btn-color; + + position: -webkit-sticky; + position: sticky; + top: 0; + background-color: inherit; + border-bottom: 1px solid var(--main-border-color); + + .label { + font-family: $font-family-heading; + } + } + + button:focus-visible { + box-shadow: none; + } + + ul { + list-style-type: none; + padding-left: 0; + + li { + ul, + & + li { + margin-top: 0.25rem; + } + + a { + display: flex; + line-height: 1.5; + padding: 0.375rem 0; + padding-right: 1.125rem; + + &.toc-link::before { + display: none; + } + } + } + } + + @for $i from 2 through 4 { + .node-name--H#{$i} { + padding-left: 1.125rem * ($i - 1); + } + } + + .is-active-link { + color: var(--toc-highlight) !important; + font-weight: 600; + } + + &::-webkit-backdrop { + -webkit-backdrop-filter: blur(5px); + backdrop-filter: blur(5px); + } + + &::backdrop { + -webkit-backdrop-filter: blur(5px); + backdrop-filter: blur(5px); + } + + &::after { + display: flex; + content: ''; + position: relative; + background: linear-gradient(transparent, var(--main-bg) 70%); + height: $curtain-height; + } + + #toc-popup-content { + overflow: auto; + max-height: calc(100vh - 4 * $topbar-height); + font-family: $font-family-heading; + margin-bottom: -$curtain-height; + } +} + /* --- Related Posts --- */ #related-posts { @@ -368,3 +564,16 @@ header { margin-right: -0.5rem; } } + +@media all and (min-width: 1200px) { + h2, + h3, + h4 { + scroll-margin-top: 2rem; + } + + #toc-bar, + #toc-solo-trigger { + display: none !important; + } +}