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// Grid system
//
// Generate semantic grid columns with these mixins.
@mixin make-row($gutter: $grid-gutter-width) {
--#{$prefix}gutter-x: #{$gutter};
--#{$prefix}gutter-y: 0;
display: flex;
flex-wrap: wrap;
// TODO: Revisit calc order after https://github.com/react-bootstrap/react-bootstrap/issues/6039 is fixed
margin-top: calc(-1 * var(--#{$prefix}gutter-y)); // stylelint-disable-line function-disallowed-list
margin-right: calc(-.5 * var(--#{$prefix}gutter-x)); // stylelint-disable-line function-disallowed-list
margin-left: calc(-.5 * var(--#{$prefix}gutter-x)); // stylelint-disable-line function-disallowed-list
}
@mixin make-col-ready() {
// Add box sizing if only the grid is loaded
box-sizing: if(variable-exists(include-column-box-sizing) and $include-column-box-sizing, border-box, null);
// Prevent columns from becoming too narrow when at smaller grid tiers by
// always setting `width: 100%;`. This works because we set the width
// later on to override this initial width.
flex-shrink: 0;
width: 100%;
max-width: 100%; // Prevent `.col-auto`, `.col` (& responsive variants) from breaking out the grid
padding-right: calc(var(--#{$prefix}gutter-x) * .5); // stylelint-disable-line function-disallowed-list
padding-left: calc(var(--#{$prefix}gutter-x) * .5); // stylelint-disable-line function-disallowed-list
margin-top: var(--#{$prefix}gutter-y);
}
@mixin make-col($size: false, $columns: $grid-columns) {
@if $size {
flex: 0 0 auto;
width: percentage(divide($size, $columns));
} @else {
flex: 1 1 0;
max-width: 100%;
}
}
@mixin make-col-auto() {
flex: 0 0 auto;
width: auto;
}
@mixin make-col-offset($size, $columns: $grid-columns) {
$num: divide($size, $columns);
margin-left: if($num == 0, 0, percentage($num));
}
// Row columns
//
// Specify on a parent element(e.g., .row) to force immediate children into NN
// number of columns. Supports wrapping to new lines, but does not do a Masonry
// style grid.
@mixin row-cols($count) {
> * {
flex: 0 0 auto;
width: divide(100%, $count);
}
}
// Framework grid generation
//
// Used only by Bootstrap to generate the correct number of grid classes given
// any value of `$grid-columns`.
@mixin make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
@each $breakpoint in map-keys($breakpoints) {
$infix: breakpoint-infix($breakpoint, $breakpoints);
@include media-breakpoint-up($breakpoint, $breakpoints) {
// Provide basic `.col-{bp}` classes for equal-width flexbox columns
.col#{$infix} {
flex: 1 0 0%; // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
}
.row-cols#{$infix}-auto > * {
@include make-col-auto();
}
@if $grid-row-columns > 0 {
@for $i from 1 through $grid-row-columns {
.row-cols#{$infix}-#{$i} {
@include row-cols($i);
}
}
}
.col#{$infix}-auto {
@include make-col-auto();
}
@if $columns > 0 {
@for $i from 1 through $columns {
.col#{$infix}-#{$i} {
@include make-col($i, $columns);
}
}
// `$columns - 1` because offsetting by the width of an entire row isn't possible
@for $i from 0 through ($columns - 1) {
@if not ($infix == "" and $i == 0) { // Avoid emitting useless .offset-0
.offset#{$infix}-#{$i} {
@include make-col-offset($i, $columns);
}
}
}
}
// Gutters
//
// Make use of `.g-*`, `.gx-*` or `.gy-*` utilities to change spacing between the columns.
@each $key, $value in $gutters {
.g#{$infix}-#{$key},
.gx#{$infix}-#{$key} {
--#{$prefix}gutter-x: #{$value};
}
.g#{$infix}-#{$key},
.gy#{$infix}-#{$key} {
--#{$prefix}gutter-y: #{$value};
}
}
}
}
}
@mixin make-cssgrid($columns: $grid-columns, $breakpoints: $grid-breakpoints) {
@each $breakpoint in map-keys($breakpoints) {
$infix: breakpoint-infix($breakpoint, $breakpoints);
@include media-breakpoint-up($breakpoint, $breakpoints) {
@if $columns > 0 {
@for $i from 1 through $columns {
.g-col#{$infix}-#{$i} {
grid-column: auto / span $i;
}
}
// Start with `1` because `0` is and invalid value.
// Ends with `$columns - 1` because offsetting by the width of an entire row isn't possible.
@for $i from 1 through ($columns - 1) {
.g-start#{$infix}-#{$i} {
grid-column-start: $i;
}
}
}
}
}
}
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