_functions.scss — VK Blocks 0.16.2

vk-blocks / lib / bootstrap / scss / _functions.scss

vk-blocks / lib / bootstrap / scss Last commit date

_functions.scss

87 lines

1	// Bootstrap functions
2	//
3	// Utility mixins and functions for evaluating source code across our variables, maps, and mixins.
4
5	// Ascending
6	// Used to evaluate Sass maps like our grid breakpoints.
7	@mixin _assert-ascending($map, $map-name) {
8	$prev-key: null;
9	$prev-num: null;
10	@each $key, $num in $map {
11	@if $prev-num == null or unit($num) == "%" {
12	// Do nothing
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}' !";
17	}
18	$prev-key: $key;
19	$prev-num: $num;
20	}
21	}
22
23	// Starts at zero
24	// Used to ensure the min-width of the lowest breakpoint starts at 0.
25	@mixin _assert-starts-at-zero($map, $map-name: "$grid-breakpoints") {
26	$values: map-values($map);
27	$first-value: nth($values, 1);
28	@if $first-value != 0 {
29	@warn "First breakpoint in #{$map-name} must start at 0, but starts at #{$first-value}.";
30	}
31	}
32
33	// Replace `$search` with `$replace` in `$string`
34	// Used on our SVG icon backgrounds for custom forms.
35	//
36	// @author Hugo Giraudel
37	// @param {String} $string - Initial string
38	// @param {String} $search - Substring to replace
39	// @param {String} $replace ('') - New value
40	// @return {String} - Updated string
41	@function str-replace($string, $search, $replace: "") {
42	$index: str-index($string, $search);
43
44	@if $index {
45	@return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
46	}
47
48	@return $string;
49	}
50
51	// Color contrast
52	@function color-yiq($color, $dark: $yiq-text-dark, $light: $yiq-text-light) {
53	$r: red($color);
54	$g: green($color);
55	$b: blue($color);
56
57	$yiq: (($r * 299) + ($g * 587) + ($b * 114)) / 1000;
58
59	@if ($yiq >= $yiq-contrasted-threshold) {
60	@return $dark;
61	} @else {
62	@return $light;
63	}
64	}
65
66	// Retrieve color Sass maps
67	@function color($key: "blue") {
68	@return map-get($colors, $key);
69	}
70
71	@function theme-color($key: "primary") {
72	@return map-get($theme-colors, $key);
73	}
74
75	@function gray($key: "100") {
76	@return map-get($grays, $key);
77	}
78
79	// Request a theme color level
80	@function theme-color-level($color-name: "primary", $level: 0) {
81	$color: theme-color($color-name);
82	$color-base: if($level > 0, $black, $white);
83	$level: abs($level);
84
85	@return mix($color-base, $color, $level * $theme-color-interval);
86	}
87