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@use "sass:list"; |
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@use "sass:map"; |
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|
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// Breakpoint viewport sizes and media queries. |
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// Breakpoints are defined as a map of (name: minimum width), order from small to large: |
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// (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px) |
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// The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default. |
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|
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// Name of the next breakpoint, or null for the last breakpoint. |
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// >> breakpoint-next(sm) |
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// md |
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// >> breakpoint-next(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)) |
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// md |
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// >> breakpoint-next(sm, $breakpoint-names: (xs sm md lg xl)) |
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// md |
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@function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) { |
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$n: list.index($breakpoint-names, $name); |
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@return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null); |
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} |
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|
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// Minimum breakpoint width. Null for the smallest (first) breakpoint. |
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// >> breakpoint-min(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)) |
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// 576px |
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@function breakpoint-min($name, $breakpoints: $grid-breakpoints) { |
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$min: map.get($breakpoints, $name); |
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@return if($min != 0, $min, null); |
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} |
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|
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// Maximum breakpoint width. Null for the largest (last) breakpoint. |
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// The maximum value is calculated as the minimum of the next one less 0.02px |
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// to work around the limitations of `min-` and `max-` prefixes and viewports with fractional widths. |
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// See https://www.w3.org/TR/mediaqueries-4/#mq-min-max |
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// Uses 0.02px rather than 0.01px to work around a current rounding bug in Safari. |
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// See https://bugs.webkit.org/show_bug.cgi?id=178261 |
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// >> breakpoint-max(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)) |
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// 767.98px |
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@function breakpoint-max($name, $breakpoints: $grid-breakpoints) { |
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$next: breakpoint-next($name, $breakpoints); |
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@return if($next, breakpoint-min($next, $breakpoints) - 0.02px, null); |
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} |
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|
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// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash infront. |
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// Useful for making responsive utilities. |
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// >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)) |
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// "" (Returns a blank string) |
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// >> breakpoint-infix(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)) |
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// "-sm" |
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@function breakpoint-infix($name, $breakpoints: $grid-breakpoints) { |
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@return if(breakpoint-min($name, $breakpoints) == null, "", "-#{$name}"); |
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} |
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|
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// Media of at least the minimum breakpoint width. No query for the smallest breakpoint. |
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// Makes the @content apply to the given breakpoint and wider. |
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@mixin media-breakpoint-up($name, $breakpoints: $grid-breakpoints) { |
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$min: breakpoint-min($name, $breakpoints); |
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@if $min { |
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@media (min-width: $min) { |
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@content; |
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} |
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} @else { |
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@content; |
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} |
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} |
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|
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// Media of at most the maximum breakpoint width. No query for the largest breakpoint. |
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// Makes the @content apply to the given breakpoint and narrower. |
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@mixin media-breakpoint-down($name, $breakpoints: $grid-breakpoints) { |
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// NOTE: Changed $max to $min to change 'mobile first' to 'desktop first' |
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$min: breakpoint-min($name, $breakpoints); |
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@if $min { |
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@media (max-width: $min) { |
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@content; |
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} |
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} @else { |
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@content; |
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} |
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} |
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