318 lines
11 KiB
SCSS
318 lines
11 KiB
SCSS
// Foundation for Sites by ZURB
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// foundation.zurb.com
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// Licensed under MIT Open Source
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////
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/// @group functions
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////
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/// Creates an inner box-shadow for only one side
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///
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/// @param {Keyword} $side - Side the shadow is supposed to appear. Can be `top`, `left`, `right` or `bottom`.
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/// @param {Number} $size - Width for the target side.
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/// @param {Color} $color - Color of the shadow.
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@mixin inner-side-shadow(
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$side: bottom,
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$size: 20px,
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$color: rgba($black, 0.25)
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) {
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$helper: round($size * 0.65);
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@if ($side == top) {
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box-shadow: inset 0 $helper $size (-1)*$helper $color;
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} @else if ($side == left) {
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box-shadow: inset $helper 0 $size (-1)*$helper $color;
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} @else if ($side == right) {
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box-shadow: inset (-1)*$helper 0 $size (-1)*$helper $color;
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} @else if ($side == bottom) {
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box-shadow: inset 0 (-1)*$helper $size (-1)*$helper $color;
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}
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}
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/// Creates a CSS triangle, which can be used for dropdown arrows, dropdown pips, and more. Use this mixin inside a `&::before` or `&::after` selector, to attach the triangle to an existing element.
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///
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/// @param {Number} $triangle-size - Width of the triangle.
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/// @param {Color} $triangle-color - Color of the triangle.
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/// @param {Keyword} $triangle-direction - Direction the triangle points. Can be `up`, `right`, `down`, or `left`.
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@mixin css-triangle(
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$triangle-size,
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$triangle-color,
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$triangle-direction
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) {
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display: block;
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width: 0;
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height: 0;
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border: inset $triangle-size;
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content: '';
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@if ($triangle-direction == down) {
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border-bottom-width: 0;
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border-top-style: solid;
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border-color: $triangle-color transparent transparent;
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}
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@if ($triangle-direction == up) {
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border-top-width: 0;
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border-bottom-style: solid;
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border-color: transparent transparent $triangle-color;
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}
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@if ($triangle-direction == right) {
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border-right-width: 0;
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border-left-style: solid;
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border-color: transparent transparent transparent $triangle-color;
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}
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@if ($triangle-direction == left) {
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border-left-width: 0;
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border-right-style: solid;
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border-color: transparent $triangle-color transparent transparent;
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}
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}
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/// Creates a menu icon with a set width, height, number of bars, and colors. The mixin uses the height of the icon and the weight of the bars to determine spacing. <div class="docs-example-burger"></div>
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///
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/// @param {Color} $color [$black] - Color to use for the icon.
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/// @param {Color} $color-hover [$dark-gray] - Color to use when the icon is hovered over.
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/// @param {Number} $width [20px] - Width of the icon.
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/// @param {Number} $height [16px] - Height of the icon.
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/// @param {Number} $weight [2px] - Height of individual bars in the icon.
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/// @param {Number} $bars [3] - Number of bars in the icon.
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@mixin hamburger(
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$color: $black,
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$color-hover: $dark-gray,
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$width: 20px,
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$height: 16px,
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$weight: 2px,
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$bars: 3
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) {
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// box-shadow CSS output
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$shadow: ();
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$hover-shadow: ();
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// Spacing between bars is calculated based on the total height of the icon and the weight of each bar
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$spacing: ($height - ($weight * $bars)) / ($bars - 1);
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@if unit($spacing) == 'px' {
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$spacing: floor($spacing);
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}
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@for $i from 2 through $bars {
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$offset: ($weight + $spacing) * ($i - 1);
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$shadow: append($shadow, 0 $offset 0 $color, comma);
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}
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// Icon container
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position: relative;
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display: inline-block;
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vertical-align: middle;
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width: $width;
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height: $height;
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cursor: pointer;
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// Icon bars
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&::after {
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position: absolute;
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top: 0;
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left: 0;
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display: block;
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width: 100%;
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height: $weight;
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background: $color;
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box-shadow: $shadow;
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content: '';
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}
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// Hover state
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@if $color-hover {
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// Generate CSS
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@for $i from 2 through $bars {
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$offset: ($weight + $spacing) * ($i - 1);
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$hover-shadow: append($hover-shadow, 0 $offset 0 $color-hover, comma);
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}
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&:hover::after {
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background: $color-hover;
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box-shadow: $hover-shadow;
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}
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}
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}
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/// Adds a downward-facing triangle as a background image to an element. The image is formatted as an SVG, making it easy to change the color. Because Internet Explorer doesn't support encoded SVGs as background images, a PNG fallback is also included.
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/// There are two PNG fallbacks: a black triangle and a white triangle. The one used depends on the lightness of the input color.
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///
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/// @param {Color} $color [$black] - Color to use for the triangle.
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@mixin background-triangle($color: $black) {
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$rgb: 'rgb%28#{round(red($color))}, #{round(green($color))}, #{round(blue($color))}%29';
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background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' version='1.1' width='32' height='24' viewBox='0 0 32 24'><polygon points='0,0 32,0 16,24' style='fill: #{$rgb}'></polygon></svg>");
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@media screen and (min-width:0\0) {
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@if lightness($color) < 60% {
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// White triangle
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background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAYCAYAAACbU/80AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAIpJREFUeNrEkckNgDAMBBfRkEt0ObRBBdsGXUDgmQfK4XhH2m8czQAAy27R3tsw4Qfe2x8uOO6oYLb6GlOor3GF+swURAOmUJ+RwtEJs9WvTGEYxBXqI1MQAZhCfUQKRzDMVj+TwrAIV6jvSUEkYAr1LSkcyTBb/V+KYfX7xAeusq3sLDtGH3kEGACPWIflNZfhRQAAAABJRU5ErkJggg==');
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}
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@else {
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// Black triangle
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background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAYCAYAAACbU/80AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAMBJREFUeNrEllsOhCAMRVszC9IlzU7KCmVHTJsoMWYMUtpyv9BgbuXQB5ZSdgBYYY4ycgBivk8KYFsQMfMiTTBP4o3nUzCKzOabLJbLy2/g31evGkAginR4/ZegKH5qX3bJCscA3t0x3kgO5tQFyhhFf50xRqFLbyMUNJQzgyjGS/wgCpvKqkRBpuWrE4V9d+1E4dPUXqIg107SQOE/2DRQxMwTDygIInVDET9T3lCoj/6j/VCmGjZOl2lKpZ8AAwDQP7zIimDGFQAAAABJRU5ErkJggg==');
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}
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}
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}
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/// Applies the micro clearfix hack popularized by Nicolas Gallagher. Include this mixin on a container if its children are all floated, to give the container a proper height.
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/// The clearfix is augmented with specific styles to prevent borders in flexbox environments
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/// @link http://nicolasgallagher.com/micro-clearfix-hack/ Micro Clearfix Hack
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/// @link http://danisadesigner.com/blog/flexbox-clear-fix-pseudo-elements/ Flexbox fix
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@mixin clearfix {
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&::before,
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&::after {
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display: table;
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content: ' ';
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@if $global-flexbox {
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flex-basis: 0;
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order: 1;
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}
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}
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&::after {
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clear: both;
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}
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}
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/// Adds CSS for a "quantity query" selector that automatically sizes elements based on how many there are inside a container.
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/// @link http://alistapart.com/article/quantity-queries-for-css Quantity Queries for CSS
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///
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/// @param {Number} $max - Maximum number of items to detect. The higher this number is, the more CSS that's required to cover each number of items.
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/// @param {Keyword} $elem [li] - Tag to use for sibling selectors.
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@mixin auto-width($max, $elem: li) {
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@for $i from 2 through $max {
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&:nth-last-child(#{$i}):first-child,
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&:nth-last-child(#{$i}):first-child ~ #{$elem} {
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width: percentage(1 / $i);
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}
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}
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}
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/// Removes the focus ring around an element when a mouse input is detected.
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@mixin disable-mouse-outline {
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[data-whatinput='mouse'] & {
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outline: 0;
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}
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}
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/// Makes an element visually hidden, but still accessible to keyboards and assistive devices.
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/// @link http://snook.ca/archives/html_and_css/hiding-content-for-accessibility Hiding Content for Accessibility
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/// @link http://hugogiraudel.com/2016/10/13/css-hide-and-seek/
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@mixin element-invisible {
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position: absolute !important;
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width: 1px;
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height: 1px;
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padding: 0;
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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: 0;
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}
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/// Reverses the CSS output created by the `element-invisible()` mixin.
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@mixin element-invisible-off {
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position: static !important;
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width: auto;
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height: auto;
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overflow: visible;
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clip: auto;
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white-space: normal;
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}
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/// Vertically centers the element inside of its first non-static parent,
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/// @link http://www.sitepoint.com/centering-with-sass/ Centering With Sass
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@mixin vertical-center {
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position: absolute;
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top: 50%;
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transform: translateY(-50%);
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}
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/// Horizontally centers the element inside of its first non-static parent,
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/// @link http://www.sitepoint.com/centering-with-sass/ Centering With Sass
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@mixin horizontal-center {
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position: absolute;
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left: 50%;
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transform: translateX(-50%);
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}
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/// Absolutely centers the element inside of its first non-static parent,
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/// @link http://www.sitepoint.com/centering-with-sass/ Centering With Sass
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@mixin absolute-center {
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position: absolute;
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top: 50%;
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left: 50%;
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transform: translate(-50%, -50%);
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}
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/// Iterates through breakpoints defined in `$breakpoint-classes` and prints the CSS inside the mixin at each breakpoint's media query. Use this with the grid, or any other component that has responsive classes.
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///
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/// @param {Boolean} $small [true] - If `false`, the mixin will skip the `small` breakpoint. Use this with components that don't prefix classes with `small-`, only `medium-` and up.
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/// @param {Boolean} $auto-insert-breakpoints [true] - If `false`, the mixin will iterate over breakpoints without doing the media query itself. Useful for more complex media query generation as in the margin grid.
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@mixin -zf-each-breakpoint($small: true, $auto-insert-breakpoints: true) {
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$list: $breakpoint-classes;
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@if not $small {
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$list: sl-remove($list, $-zf-zero-breakpoint);
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}
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@each $name in $list {
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$old-zf-size: null;
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@if global-variable-exists(-zf-size) {
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$old-zf-size: $-zf-size;
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}
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$-zf-size: $name !global;
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@if $auto-insert-breakpoints {
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@include breakpoint($name) {
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@content;
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}
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}
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@else {
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@content;
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}
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$-zf-size: $old-zf-size !global;
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}
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}
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/// Generate the `@content` passed to the mixin with a value `$-zf-bp-value` related to a breakpoint, depending on the `$name` parameter:
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/// - For a single value, `$-zf-bp-value` is this value.
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/// - For a breakpoint name, `$-zf-bp-value` is the corresponding breakpoint value in `$map`.
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/// - For "auto", `$-zf-bp-value` is the corresponding breakpoint value in `$map` and is passed to `@content`, which is made responsive for each breakpoint of `$map`.
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/// @param {Number|Array|Keyword} $name [auto] - Single value, breakpoint name, or list of breakpoint names to use. "auto" by default.
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/// @param {Number|Map} $map - Map of breakpoints and values or single value to use.
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@mixin -zf-breakpoint-value(
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$name: auto,
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$map: null
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) {
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@if $name == auto and type-of($map) == 'map' {
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// "auto"
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@each $k, $v in $map {
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@include breakpoint($k) {
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@include -zf-breakpoint-value($v, $map) {
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@content;
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}
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}
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}
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}
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@else {
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// breakpoint name
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@if type-of($name) == 'string' {
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$name: -zf-get-bp-val($map, $name);
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}
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// breakpoint value
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$-zf-bp-value: $name !global;
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@content;
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}
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}
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