3
// Utility mixins and functions for evaluating source code across our variables, maps, and mixins.
6
// Used to evaluate Sass maps like our grid breakpoints.
7
@mixin _assert-ascending($map, $map-name) {
10
@each $key, $num in $map {
11
@if $prev-num == null or unit($num) == "%" or unit($prev-num) == "%" {
13
} @else if not comparable($prev-num, $num) {
14
@warn "Potentially invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} whose unit makes it incomparable to #{$prev-num}, the value of the previous key '#{$prev-key}' !";
15
} @else if $prev-num >= $num {
16
@warn "Invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} which isn't greater than #{$prev-num}, the value of the previous key '#{$prev-key}' !";
24
// Used to ensure the min-width of the lowest breakpoint starts at 0.
25
@mixin _assert-starts-at-zero($map, $map-name: "$grid-breakpoints") {
26
@if length($map) > 0 {
27
$values: map-values($map);
28
$first-value: nth($values, 1);
29
@if $first-value != 0 {
30
@warn "First breakpoint in #{$map-name} must start at 0, but starts at #{$first-value}.";
35
// Replace `$search` with `$replace` in `$string`
36
// Used on our SVG icon backgrounds for custom forms.
38
// @author Hugo Giraudel
39
// @param {String} $string - Initial string
40
// @param {String} $search - Substring to replace
41
// @param {String} $replace ('') - New value
42
// @return {String} - Updated string
43
@function str-replace($string, $search, $replace: "") {
44
$index: str-index($string, $search);
47
@return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
53
// See https://codepen.io/kevinweber/pen/dXWoRw
55
// Requires the use of quotes around data URIs.
57
@function escape-svg($string) {
58
@if str-index($string, "data:image/svg+xml") {
59
@each $char, $encoded in $escaped-characters {
60
// Do not escape the url brackets
61
@if str-index($string, "url(") == 1 {
62
$string: url("#{str-replace(str-slice($string, 6, -3), $char, $encoded)}");
64
$string: str-replace($string, $char, $encoded);
73
@function color-yiq($color, $dark: $yiq-text-dark, $light: $yiq-text-light) {
78
$yiq: (($r * 299) + ($g * 587) + ($b * 114)) * .001;
80
@if ($yiq >= $yiq-contrasted-threshold) {
87
// Retrieve color Sass maps
88
@function color($key: "blue") {
89
@return map-get($colors, $key);
92
@function theme-color($key: "primary") {
93
@return map-get($theme-colors, $key);
96
@function gray($key: "100") {
97
@return map-get($grays, $key);
100
// Request a theme color level
101
@function theme-color-level($color-name: "primary", $level: 0) {
102
$color: theme-color($color-name);
103
$color-base: if($level > 0, $black, $white);
106
@return mix($color-base, $color, $level * $theme-color-interval);
110
@function add($value1, $value2, $return-calc: true) {
111
@if $value1 == null {
115
@if $value2 == null {
119
@if type-of($value1) == number and type-of($value2) == number and comparable($value1, $value2) {
120
@return $value1 + $value2;
123
@return if($return-calc == true, calc(#{$value1} + #{$value2}), $value1 + unquote(" + ") + $value2);
126
@function subtract($value1, $value2, $return-calc: true) {
127
@if $value1 == null and $value2 == null {
131
@if $value1 == null {
135
@if $value2 == null {
139
@if type-of($value1) == number and type-of($value2) == number and comparable($value1, $value2) {
140
@return $value1 - $value2;
143
@if type-of($value2) != number {
144
$value2: unquote("(") + $value2 + unquote(")");
147
@return if($return-calc == true, calc(#{$value1} - #{$value2}), $value1 + unquote(" - ") + $value2);
150
@function divide($dividend, $divisor, $precision: 10) {
151
$sign: if($dividend > 0 and $divisor > 0 or $dividend < 0 and $divisor < 0, 1, -1);
152
$dividend: abs($dividend);
153
$divisor: abs($divisor);
158
@error "Cannot divide by 0";
160
$remainder: $dividend;
163
@while ($remainder > 0 and $precision >= 0) {
165
@while ($remainder >= $divisor) {
166
$remainder: $remainder - $divisor;
167
$quotient: $quotient + 1;
169
$result: $result * 10 + $quotient;
170
$factor: $factor * .1;
171
$remainder: $remainder * 10;
172
$precision: $precision - 1;
173
@if ($precision < 0 and $remainder >= $divisor * 5) {
174
$result: $result + 1;
177
$result: $result * $factor * $sign;
178
$dividend-unit: unit($dividend);
179
$divisor-unit: unit($divisor);
186
@if ($dividend-unit != $divisor-unit and map-has-key($unit-map, $dividend-unit)) {
187
$result: $result * map-get($unit-map, $dividend-unit);