/
_toc.scss
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/
_toc.scss
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////
/// Copyright (c) 2016-2020 Martin Donath <martin.donath@squidfunk.com>
///
/// Permission is hereby granted, free of charge, to any person obtaining a
/// copy of this software and associated documentation files (the "Software"),
/// to deal in the Software without restriction, including without limitation
/// the rights to use, copy, modify, merge, publish, distribute, sublicense,
/// and/or sell copies of the Software, and to permit persons to whom the
/// Software is furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
/// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
/// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
/// DEALINGS
////
// ----------------------------------------------------------------------------
// Rules
// ----------------------------------------------------------------------------
// Scoped in typesetted content to match specificity of regular content
.md-typeset {
// Permalinks extension
.headerlink {
display: inline-block;
margin-left: px2rem(10px);
// Hack: if we don't set visibility hidden, the text content of the node
// will include the headerlink character, which is why Google indexes them.
visibility: hidden;
opacity: 0;
transition:
color 250ms,
visibility 0ms 500ms,
opacity 125ms;
// Adjust for RTL languages
[dir="rtl"] & {
margin-right: px2rem(10px);
margin-left: initial;
}
// Higher specificity for color due to palettes integration
html body & {
color: var(--md-default-fg-color--lighter);
}
// Hide for print
@media print {
display: none;
}
}
// Make permalink visible on hover
:hover > .headerlink,
:target > .headerlink,
.headerlink:focus {
visibility: visible;
opacity: 1;
transition:
color 250ms,
visibility 0ms,
opacity 125ms;
}
// Active or targeted permalink
:target > .headerlink,
.headerlink:focus,
.headerlink:hover {
color: var(--md-accent-fg-color);
}
// General scroll margin offset for anything that can be targeted. Browser
// support is pretty decent by now, and if we wait until Edge 79+ has more
// adoption, we can get rid of all anchor-correction hacks.
:target {
scroll-margin-top: px2rem(48px + 24px);
}
// Correct anchor offset for link blurring
@each $level, $delta in (
h1 h2 h3: 8px,
h4: 9px,
h5 h6: 12px,
) {
%#{nth($level, 1)} {
// Reset, as we use the anchor-correction hack here.
&:target {
scroll-margin-top: initial;
}
// Un-targeted anchor
&::before {
display: block;
margin-top: -1 * px2rem($delta);
padding-top: px2rem($delta);
content: "";
}
// Targeted anchor (48px from header, 12px from sidebar offset)
&:target::before {
margin-top: -1 * px2rem(48px + 12px + $delta);
padding-top: px2rem(48px + 12px + $delta);
}
}
// Define levels
@for $n from 1 through length($level) {
#{nth($level, $n)}[id] {
@extend %#{nth($level, 1)};
}
}
}
}