1 files changed, 98 insertions, 0 deletions
diff --git a/styles/_sass/utilities/functions.sass b/styles/_sass/utilities/functions.sass
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+++ b/styles/_sass/utilities/functions.sass
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+@function mergeColorMaps($bulma-colors, $custom-colors)
+  // We return at least Bulma's hard-coded colors
+  $merged-colors: $bulma-colors
+
+  // We want a map as input
+  @if type-of($custom-colors) == 'map'
+    @each $name, $components in $custom-colors
+      // The color name should be a string
+      // and the components either a single color
+      // or a colors list with at least one element
+      @if type-of($name) == 'string' and (type-of($components) == 'list' or type-of($components) == 'color') and length($components) >= 1
+        $color-base: null
+        $color-invert: null
+        $color-light: null
+        $color-dark: null
+        $value: null
+
+        // The param can either be a single color
+        // or a list of 2 colors
+        @if type-of($components) == 'color'
+          $color-base: $components
+          $color-invert: findColorInvert($color-base)
+          $color-light: findLightColor($color-base)
+          $color-dark: findDarkColor($color-base)
+        @else if type-of($components) == 'list'
+          $color-base: nth($components, 1)
+          // If Invert, Light and Dark are provided
+          @if length($components) > 3
+            $color-invert: nth($components, 2)
+            $color-light: nth($components, 3)
+            $color-dark: nth($components, 4)
+            // If only Invert and Light are provided
+          @else if length($components) > 2
+            $color-invert: nth($components, 2)
+            $color-light: nth($components, 3)
+            $color-dark: findDarkColor($color-base)
+            // If only Invert is provided
+          @else
+            $color-invert: nth($components, 2)
+            $color-light: findLightColor($color-base)
+            $color-dark: findDarkColor($color-base)
+
+        $value: ($color-base, $color-invert, $color-light, $color-dark)
+
+        // We only want to merge the map if the color base is an actual color
+        @if type-of($color-base) == 'color'
+          // We merge this colors elements as map with Bulma's colors map
+          // (we can override them this way, no multiple definition for the same name)
+          // $merged-colors: map_merge($merged-colors, ($name: ($color-base, $color-invert, $color-light, $color-dark)))
+          $merged-colors: map_merge($merged-colors, ($name: $value))
+
+  @return $merged-colors
+
+@function powerNumber($number, $exp)
+  $value: 1
+  @if $exp > 0
+    @for $i from 1 through $exp
+      $value: $value * $number
+  @else if $exp < 0
+    @for $i from 1 through -$exp
+      $value: $value / $number
+  @return $value
+
+@function colorLuminance($color)
+  $color-rgb: ('red': red($color),'green': green($color),'blue': blue($color))
+  @each $name, $value in $color-rgb
+    $adjusted: 0
+    $value: $value / 255
+    @if $value < 0.03928
+      $value: $value / 12.92
+    @else
+      $value: ($value + .055) / 1.055
+      $value: powerNumber($value, 2)
+    $color-rgb: map-merge($color-rgb, ($name: $value))
+  @return (map-get($color-rgb, 'red') * .2126) + (map-get($color-rgb, 'green') * .7152) + (map-get($color-rgb, 'blue') * .0722)
+
+@function findColorInvert($color)
+  @if (colorLuminance($color) > 0.55)
+    @return rgba(#000, 0.7)
+  @else
+    @return #fff
+
+@function findLightColor($color)
+  @if type-of($color) == 'color'
+    $l: 96%
+    @if lightness($color) > 96%
+      $l: lightness($color)
+    @return change-color($color, $lightness: $l)
+  @return $background
+
+@function findDarkColor($color)
+  @if type-of($color) == 'color'
+    $base-l: 29%
+    $luminance: colorLuminance($color)
+    $luminance-delta: (0.53 - $luminance)
+    $target-l: round($base-l + ($luminance-delta * 53))
+    @return change-color($color, $lightness: max($base-l, $target-l))
+  @return $text-strong