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Breakpoints and container widths are now defined as maps.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| // Breakpoint viewport sizes and media queries. | ||
| // | ||
| // Breakpoints are defined as a map of (name: minimum width), order from small to large: | ||
| // | ||
| // (xs: 0, sm: 34rem, md: 45rem) | ||
| // | ||
| // The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default. | ||
|
|
||
| // Name of the next breakpoint, or null for the last breakpoint. | ||
| // | ||
| // >> breakpoint-next(sm) | ||
| // md | ||
| // >> breakpoint-next(sm, $breakpoints: (xs: 0, sm: 34rem, md: 45rem)) | ||
| // md | ||
| // >> breakpoint-next(sm, $breakpoint-names: (xs sm md)) | ||
| // md | ||
| @function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) { | ||
| $n: index($breakpoint-names, $name); | ||
| @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null); | ||
| } | ||
|
|
||
| // Minimum breakpoint width. Null for the smallest (first) breakpoint. | ||
| // | ||
| // >> breakpoint-min(sm, (xs: 0, sm: 34rem, md: 45rem)) | ||
| // 34rem | ||
| @function breakpoint-min($name, $breakpoints: $grid-breakpoints) { | ||
| $min: map-get($breakpoints, $name); | ||
| @return if($min != 0, $min, null); | ||
| } | ||
|
|
||
| // Maximum breakpoint width. Null for the largest (last) breakpoint. | ||
| // The maximum value is calculated as the minimum of the next one less 0.1. | ||
| // | ||
| // >> breakpoint-max(sm, (xs: 0, sm: 34rem, md: 45rem)) | ||
| // 44.9rem | ||
| @function breakpoint-max($name, $breakpoints: $grid-breakpoints) { | ||
| $next: breakpoint-next($name, $breakpoints); | ||
| @return if($next, breakpoint-min($next, $breakpoints) - 0.1, null); | ||
| } | ||
|
|
||
| // Media of at least the minimum breakpoint width. No query for the smallest breakpoint. | ||
| @mixin media-breakpoint-min($name, $breakpoints: $grid-breakpoints) { | ||
| $min: breakpoint-min($name, $breakpoints); | ||
| @if $min { | ||
| @media (min-width: $min) { | ||
| @content; | ||
| } | ||
| } @else { | ||
| @content; | ||
| } | ||
| } | ||
|
|
||
| // Media of at most the maximum breakpoint width. No query for the largest breakpoint. | ||
| @mixin media-breakpoint-max($name, $breakpoints: $grid-breakpoints) { | ||
| $max: breakpoint-max($name, $breakpoints); | ||
| @if $max { | ||
| @media (max-width: $max) { | ||
| @content; | ||
| } | ||
| } @else { | ||
| @content; | ||
| } | ||
| } | ||
|
|
||
| // Media between the breakpoint's minimum and maximum widths. | ||
| // No minimum for the smallest breakpoint, and no maximum for the largest one. | ||
| @mixin media-breakpoint-only($name, $breakpoints: $grid-breakpoints) { | ||
| // Nested media query combination does not work in libsass yet | ||
| // https://github.com/sass/libsass/issues/185 | ||
| // Work around until the issue is resolved: | ||
| $min: breakpoint-min($name, $breakpoints); | ||
| $max: breakpoint-max($name, $breakpoints); | ||
| @if $min and $max { | ||
| @media (min-width: $min) and (max-width: $max) { | ||
| @content; | ||
| } | ||
| } @else { | ||
| // One of min or max is a no-op, so this branch is not affected by libsass#185 | ||
| @include media-breakpoint-min($name, $breakpoints) { | ||
| @include media-breakpoint-max($name, $breakpoints) { | ||
| @content; | ||
| } | ||
| } | ||
| } | ||
| } |
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