diff --git a/_javascript/commons/topbar-switch.js b/_javascript/commons/topbar-switch.js index 55fbab6..1740d1f 100644 --- a/_javascript/commons/topbar-switch.js +++ b/_javascript/commons/topbar-switch.js @@ -3,50 +3,50 @@ */ $(function() { + const $topbarWrapper = $("#topbar-wrapper"); + const $panel = $("#panel-wrapper"); + const $searchInput = $("#search-input"); - const topbarWrapper = $("#topbar-wrapper"); - const toc = $("#toc-wrapper"); - const access = $(".access"); - const searchInput = $("#search-input"); + const CLASS_TOPBAR_UP = "topbar-up"; + const CLASS_TOPBAR_DOWN = "topbar-down"; + const ATTR_TOC_SCROLLING_UP = "toc-scrolling-up"; // topbar locked let didScroll; let lastScrollTop = 0; - const delta = 5; - const topbarHeight = topbarWrapper.outerHeight(); + const delta = $topbarWrapper.outerHeight(); + const topbarHeight = $topbarWrapper.outerHeight(); function hasScrolled() { - var st = $(this).scrollTop(); + let st = $(this).scrollTop(); /* Make sure they scroll more than delta */ if (Math.abs(lastScrollTop - st) <= delta) { return; } - if (st > lastScrollTop && st > topbarHeight) { - /* Scroll Down */ - topbarWrapper.removeClass("topbar-down").addClass("topbar-up"); + if (st > lastScrollTop ) { // Scroll Down + if (st > topbarHeight) { + $topbarWrapper.removeClass(CLASS_TOPBAR_DOWN).addClass(CLASS_TOPBAR_UP); + $panel.removeClass(CLASS_TOPBAR_DOWN); - if (toc.length > 0) { - toc.removeClass("topbar-down"); + if ($searchInput.is(":focus")) { + $searchInput.blur(); /* remove focus */ + } } + } else {// Scroll up + // did not reach the bottom of the document, i.e., still have space to scroll up + if (st + $(window).height() < $(document).height()) { + let tocScrollingUp = $topbarWrapper.attr(ATTR_TOC_SCROLLING_UP); + if (typeof tocScrollingUp !== "undefined") { + if (tocScrollingUp === "false") { + $topbarWrapper.removeAttr(ATTR_TOC_SCROLLING_UP); + } - if (access.length > 0) { - access.removeClass("topbar-down"); - } - - if (searchInput.is(":focus")) { - searchInput.blur(); /* remove focus */ - } - - } else if (st + $(window).height() < $(document).height()) { - /* Scroll Up */ - topbarWrapper.removeClass("topbar-up").addClass("topbar-down"); - if (toc.length > 0) { - toc.addClass("topbar-down"); - } - if (access.length > 0) { - access.addClass("topbar-down"); + } else { + $topbarWrapper.removeClass(CLASS_TOPBAR_UP).addClass(CLASS_TOPBAR_DOWN); + $panel.addClass(CLASS_TOPBAR_DOWN); + } } } @@ -54,7 +54,7 @@ $(function() { } $(window).scroll(function(event) { - if ($("#topbar-title").is(":hidden")) { /* Not in small screens */ + if ($("#topbar-title").is(":hidden")) { didScroll = true; } }); diff --git a/_javascript/utils/smooth-scroll.js b/_javascript/utils/smooth-scroll.js index 8869da6..2d41988 100644 --- a/_javascript/utils/smooth-scroll.js +++ b/_javascript/utils/smooth-scroll.js @@ -8,16 +8,19 @@ */ $(function() { - const REM = 16; /* 16px */ + const $topbarWrapper = $("#topbar-wrapper"); + const topbarHeight = $topbarWrapper.outerHeight(); const $topbarTitle = $("#topbar-title"); - const topbarHeight = $("#topbar-wrapper").outerHeight(); + + const ATTR_TOC_SCROLLING = "toc-scrolling-up"; const SCROLL_MARK = "scroll-focus"; + const REM = 16; // in pixels + let tocScrollUpCount = 0; $("a[href*='#']") .not("[href='#']") .not("[href='#0']") .click(function(event) { - if (this.pathname.replace(/^\//, "") === location.pathname.replace(/^\//, "")) { if (location.hostname === this.hostname) { const hash = decodeURI(this.hash); @@ -28,6 +31,7 @@ $(function() { let parent = $(this).parent().prop("tagName"); let isAnchor = RegExp(/^H\d/).test(parent); + let isMobileViews = !$topbarTitle.is(":hidden"); if (typeof $target !== "undefined") { event.preventDefault(); @@ -37,30 +41,27 @@ $(function() { } let curOffset = isAnchor? $(this).offset().top : $(window).scrollTop(); - let destOffset = $target.offset().top; + let destOffset = $target.offset().top -= REM / 2; if (destOffset < curOffset) { // scroll up - if (toFootnoteRef) { - // Avoid the top-bar covering `fnref` when scrolling up - // because `fnref` has no `%anchor`(see: module.scss) style. - destOffset -= (topbarHeight + REM / 2); + if (!isAnchor && !toFootnote) { // trigger by ToC item + if (!isMobileViews) { // on desktop/tablet screens + $topbarWrapper.removeClass("topbar-down").addClass("topbar-up"); + // Send message to `${JS_ROOT}/commons/topbar-switch.js` + $topbarWrapper.attr(ATTR_TOC_SCROLLING, true); + tocScrollUpCount += 1; + } } - if (isAnchor && $topbarTitle.is(":hidden")) { - destOffset += topbarHeight; - } - - } else { // scroll down - if (!isAnchor && !toFootnote) { // the ToC item - destOffset += topbarHeight; + if ((isAnchor || toFootnoteRef) && isMobileViews) { + destOffset -= topbarHeight; + console.log(`[smooth] mobile -= topbar height`); } } - $("html,body").animate({ + $("html").animate({ scrollTop: destOffset - }, 800, () => { - - // const $target = $($target); + }, 500, () => { $target.focus(); /* clean up old scroll mark */ @@ -84,6 +85,14 @@ $(function() { $target.attr("tabindex", "-1"); /* Adding tabindex for elements not focusable */ $target.focus(); /* Set focus again */ } + + if (typeof $topbarWrapper.attr(ATTR_TOC_SCROLLING) !== "undefined") { + tocScrollUpCount -= 1; + + if (tocScrollUpCount <= 0) { + $topbarWrapper.attr(ATTR_TOC_SCROLLING, "false"); + } + } }); } } diff --git a/_sass/addon/commons.scss b/_sass/addon/commons.scss index 0729239..9683c67 100644 --- a/_sass/addon/commons.scss +++ b/_sass/addon/commons.scss @@ -62,7 +62,7 @@ h2 { h3 { @extend %heading; @extend %section; - @extend %anchor-relative; + @extend %anchor; font-size: 1.2rem; } @@ -196,10 +196,6 @@ img[data-src] { position: sticky; } - &.topbar-down { - top: 6rem; - } - > div { padding-left: 1rem; border-left: 1px solid var(--main-border-color); @@ -237,6 +233,10 @@ img[data-src] { transition: none; } } + + &.topbar-down > div { + top: 6rem; + } } #access-lastmod { diff --git a/_sass/addon/module.scss b/_sass/addon/module.scss index 7e25531..9f705a8 100644 --- a/_sass/addon/module.scss +++ b/_sass/addon/module.scss @@ -11,30 +11,32 @@ } %section { - padding-top: 3.5rem; - margin-top: -2.5rem; - #core-wrapper & { - line-height: 1.2; - margin-bottom: 1rem; + margin-top: 2.5rem; + margin-bottom: 2rem; } } %anchor { > a { - font-size: 70%; - visibility: hidden; - margin-left: 0.25rem; - border-bottom: none !important; - opacity: 0; - transition: opacity 0.25s ease-in, visibility 0s ease-in 0.25s; + font-size: 1rem; + margin-left: 0.5rem; } - &:hover { + @media (hover: hover) { > a { - visibility: visible; - opacity: 1; - transition: opacity 0.25s ease-in, visibility 0s ease-in 0s; + border-bottom: none !important; + visibility: hidden; + opacity: 0; + transition: opacity 0.25s ease-in, visibility 0s ease-in 0.25s; + } + + &:hover { + > a { + visibility: visible; + opacity: 1; + transition: opacity 0.25s ease-in, visibility 0s ease-in 0s; + } } } } diff --git a/_sass/layout/post.scss b/_sass/layout/post.scss index 4d09f23..aaf0647 100644 --- a/_sass/layout/post.scss +++ b/_sass/layout/post.scss @@ -145,11 +145,6 @@ img.preview-img { top: 4rem; transition: top 0.2s ease-in-out; animation: fade-up 0.8s; - - &.topbar-down { - top: 6rem; - } - } #toc li a { diff --git a/assets/js/dist/categories.min.js b/assets/js/dist/categories.min.js index 8cb8fb1..d4bb325 100644 --- a/assets/js/dist/categories.min.js +++ b/assets/js/dist/categories.min.js @@ -3,4 +3,4 @@ * © 2019 Cotes Chung * MIT Licensed */ -$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(e=>{const o=$(e.target);let t=o.prop("tagName")==="button".toUpperCase()?o:o.parent();t.blur(),flipMode()})}),$(function(){const 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