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// mixins
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// --------------------------
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// base rendering for an icon
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@mixin fa-icon {
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-webkit-font-smoothing: antialiased;
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-moz-osx-font-smoothing: grayscale;
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display: inline-block;
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font-style: normal;
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font-variant: normal;
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font-weight: normal;
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line-height: 1;
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}
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// sets relative font-sizing and alignment (in _sizing)
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@mixin fa-size ($font-size) {
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font-size: fa-divide($font-size, $fa-size-scale-base) * 1em; // converts step in sizing scale into an em-based value that's relative to the scale's base
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line-height: fa-divide(1, $font-size) * 1em; // sets the line-height of the icon back to that of it's parent
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vertical-align: (fa-divide(6, $font-size) - fa-divide(3, 8)) * 1em; // vertically centers the icon taking into account the surrounding text's descender
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}
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// only display content to screen readers
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// see: https://www.a11yproject.com/posts/2013-01-11-how-to-hide-content/
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// see: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
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@mixin fa-sr-only() {
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position: absolute;
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width: 1px;
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height: 1px;
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padding: 0;
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margin: -1px;
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overflow: hidden;
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clip: rect(0, 0, 0, 0);
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white-space: nowrap;
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border-width: 0;
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}
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// use in conjunction with .sr-only to only display content when it's focused
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@mixin fa-sr-only-focusable() {
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&:not(:focus) {
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@include fa-sr-only();
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}
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}
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// sets a specific icon family to use alongside style + icon mixins
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// convenience mixins for declaring pseudo-elements by CSS variable,
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// including all style-specific font properties, and both the ::before
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// and ::after elements in the duotone case.
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@mixin fa-icon-solid($fa-var) {
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@extend %fa-icon;
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@extend .fa-solid;
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&::before {
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content: unquote("\"#{ $fa-var }\"");
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}
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}
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@mixin fa-icon-regular($fa-var) {
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@extend %fa-icon;
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@extend .fa-regular;
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&::before {
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content: unquote("\"#{ $fa-var }\"");
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}
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}
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@mixin fa-icon-brands($fa-var) {
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@extend %fa-icon;
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@extend .fa-brands;
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&::before {
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content: unquote("\"#{ $fa-var }\"");
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}
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}
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