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111 lines
2.8 KiB
SCSS
111 lines
2.8 KiB
SCSS
// directional-property mixins are shorthands
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// for writing properties like the following
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//
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// @include margin(null 0 10px);
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// ------
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// margin-right: 0;
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// margin-bottom: 10px;
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// margin-left: 0;
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//
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// - or -
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//
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// @include border-style(dotted null);
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// ------
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// border-top-style: dotted;
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// border-bottom-style: dotted;
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//
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// ------
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//
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// Note: You can also use false instead of null
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@function collapse-directionals($vals) {
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$output: null;
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$A: nth( $vals, 1 );
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$B: if( length($vals) < 2, $A, nth($vals, 2));
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$C: if( length($vals) < 3, $A, nth($vals, 3));
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$D: if( length($vals) < 2, $A, nth($vals, if( length($vals) < 4, 2, 4) ));
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@if $A == 0 { $A: 0 }
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@if $B == 0 { $B: 0 }
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@if $C == 0 { $C: 0 }
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@if $D == 0 { $D: 0 }
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@if $A == $B and $A == $C and $A == $D { $output: $A }
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@else if $A == $C and $B == $D { $output: $A $B }
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@else if $B == $D { $output: $A $B $C }
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@else { $output: $A $B $C $D }
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@return $output;
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}
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@function contains-falsy($list) {
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@each $item in $list {
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@if not $item {
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@return true;
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}
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}
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@return false;
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}
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@mixin directional-property($pre, $suf, $vals) {
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// Property Names
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$top: $pre + "-top" + if($suf, "-#{$suf}", "");
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$bottom: $pre + "-bottom" + if($suf, "-#{$suf}", "");
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$left: $pre + "-left" + if($suf, "-#{$suf}", "");
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$right: $pre + "-right" + if($suf, "-#{$suf}", "");
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$all: $pre + if($suf, "-#{$suf}", "");
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$vals: collapse-directionals($vals);
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@if contains-falsy($vals) {
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@if nth($vals, 1) { #{$top}: nth($vals, 1); }
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@if length($vals) == 1 {
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@if nth($vals, 1) { #{$right}: nth($vals, 1); }
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} @else {
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@if nth($vals, 2) { #{$right}: nth($vals, 2); }
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}
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// prop: top/bottom right/left
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@if length($vals) == 2 {
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@if nth($vals, 1) { #{$bottom}: nth($vals, 1); }
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@if nth($vals, 2) { #{$left}: nth($vals, 2); }
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// prop: top right/left bottom
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} @else if length($vals) == 3 {
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@if nth($vals, 3) { #{$bottom}: nth($vals, 3); }
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@if nth($vals, 2) { #{$left}: nth($vals, 2); }
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// prop: top right bottom left
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} @else if length($vals) == 4 {
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@if nth($vals, 3) { #{$bottom}: nth($vals, 3); }
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@if nth($vals, 4) { #{$left}: nth($vals, 4); }
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}
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// prop: top/right/bottom/left
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} @else {
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#{$all}: $vals;
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}
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}
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@mixin margin($vals...) {
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@include directional-property(margin, false, $vals...);
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}
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@mixin padding($vals...) {
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@include directional-property(padding, false, $vals...);
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}
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@mixin border-style($vals...) {
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@include directional-property(border, style, $vals...);
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}
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@mixin border-color($vals...) {
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@include directional-property(border, color, $vals...);
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}
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@mixin border-width($vals...) {
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@include directional-property(border, width, $vals...);
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}
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