Colors for Bulma.

src/Bulma/Color.purs

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+module Bulma.Color where
+
+import Prelude (show, class Show, (<<<), (<>), ($), (<))
+import Halogen.HTML as HH
+import Data.String (toLower)
+import Data.Generic.Rep (class Generic)
+import Data.Show.Generic (genericShow)
+
+type Inverted = Boolean
+
+data ColorSubject = Background | Text
+
+-- | As the documentation says, Bulma provides 7 colors: text primary successful link info warning danger.
+data PrimaryColor = ColorText | Success | Primary | Link | Info | Warning | Danger
+
+-- | Both text and background have additional colors: white black dark and light.
+data TypographyColor = White | Black | Dark | Light | PrimaryColor PrimaryColor
+
+-- | Bulma provides many shades of color: Light Dark Soft Bold OnScheme and a custom shade which
+-- | is represented by a number between 5 and 100 (by 5).
+data Shade = LightShade | DarkShade | BoldShade | SoftShade | Custom Int | OnScheme | NoShade
+
+-- | Bulma provides many shades of grey, too.
+data ShadeOfGrey
+  = BlackBis | BlackTer
+  | GreyDarker | GreyDark | Grey | GreyLight | GreyLighter
+  | WhiteTer | WhiteBis
+
+derive instance genericColorSubject :: Generic ColorSubject _
+instance showColorSubject :: Show ColorSubject where
+  show = toLower <<< genericShow
+
+derive instance genericColor :: Generic PrimaryColor _
+instance showColor :: Show PrimaryColor where
+  show = toLower <<< genericShow
+
+derive instance genericTypographyColor :: Generic TypographyColor _
+instance showTypographyColor :: Show TypographyColor where
+  show = case _ of
+    (PrimaryColor color) -> show color
+    color                -> (toLower <<< genericShow) color
+
+derive instance genericShade :: Generic Shade _
+instance showShade :: Show Shade where
+  show = toLower <<< genericShow
+
+derive instance genericShadeOfGrey :: Generic ShadeOfGrey _
+instance showShadeOfGrey :: Show ShadeOfGrey where
+  show = toLower <<< genericShow
+
+has_grey :: ColorSubject -> ShadeOfGrey -> Inverted -> HH.ClassName
+has_grey subject shade inverted = HH.ClassName $ "has-" <> show subject <> "-" <> show shade <> inverted_
+  where
+  inverted_ = if inverted then "-inverted" else ""
+
+has_color :: ColorSubject -> PrimaryColor -> Shade -> Inverted -> HH.ClassName
+has_color subject color shade inverted = HH.ClassName $ "has-" <> subject_ <> "-" <> color_ <> shade_ <> inverted_
+  where
+  subject_ = show subject
+  color_   = show color
+  shade_   = case shade of
+    NoShade    -> ""
+    Custom num -> "-" <> (if num < 10 then "0" <> show num else show num)
+    OnScheme   -> "-on-scheme"
+    _          -> "-" <> show shade
+  inverted_ = if inverted then "-inverted" else ""
+
+has_background_current = HH.ClassName "has-background-current" :: HH.ClassName
+has_background_inherit = HH.ClassName "has-background-inherit" :: HH.ClassName
+has_text_current = HH.ClassName "has-text-current" :: HH.ClassName
+has_text_inherit = HH.ClassName "has-text-inherit" :: HH.ClassName