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color.cljc
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(ns girouette.tw.color
(:require [clojure.string :as str]
[clojure.set :as set]
[clojure.edn :as edn]
[girouette.tw.common :refer [matches-nothing
value-unit->css
div-100 mul-255
clamp-0-255]]
[garden.color :as gc]))
(def tw-v3-unified-colors
"The colors defined in Tailwind as 'v3 Unified'."
{"white" "ffffff",
"black" "000000",
"slate" {50 "f8fafc"
100 "f1f5f9"
200 "e2e8f0"
300 "cbd5e1"
400 "94a3b8"
500 "64748b"
600 "475569"
700 "334155"
800 "1e293b"
900 "0f172a"}
"gray" {50 "f9fafb"
100 "f3f4f6"
200 "e5e7eb"
300 "d1d5db"
400 "9ca3af"
500 "6b7280"
600 "4b5563"
700 "374151"
800 "1f2937"
900 "111827"}
"zinc" {50 "fafafa"
100 "f4f4f5"
200 "e4e4e7"
300 "d4d4d8"
400 "a1a1aa"
500 "71717a"
600 "52525b"
700 "3f3f46"
800 "27272a"
900 "18181b"}
"neutral" {50 "fafafa"
100 "f5f5f5"
200 "e5e5e5"
300 "d4d4d4"
400 "a3a3a3"
500 "737373"
600 "525252"
700 "404040"
800 "262626"
900 "171717"}
"stone" {50 "fafaf9"
100 "f5f5f4"
200 "e7e5e4"
300 "d6d3d1"
400 "a8a29e"
500 "78716c"
600 "57534e"
700 "44403c"
800 "292524"
900 "1c1917"}
"red" {50 "fef2f2"
100 "fee2e2"
200 "fecaca"
300 "fca5a5"
400 "f87171"
500 "ef4444"
600 "dc2626"
700 "b91c1c"
800 "991b1b"
900 "7f1d1d"}
"orange" {50 "fff7ed"
100 "ffedd5"
200 "fed7aa"
300 "fdba74"
400 "fb923c"
500 "f97316"
600 "ea580c"
700 "c2410c"
800 "9a3412"
900 "7c2d12"}
"amber" {50 "fffbeb"
100 "fef3c7"
200 "fde68a"
300 "fcd34d"
400 "fbbf24"
500 "f59e0b"
600 "d97706"
700 "b45309"
800 "92400e"
900 "78350f"}
"yellow" {50 "fefce8"
100 "fef9c3"
200 "fef08a"
300 "fde047"
400 "facc15"
500 "eab308"
600 "ca8a04"
700 "a16207"
800 "854d0e"
900 "713f12"}
"lime" {50 "f7fee7"
100 "ecfccb"
200 "d9f99d"
300 "bef264"
400 "a3e635"
500 "84cc16"
600 "65a30d"
700 "4d7c0f"
800 "3f6212"
900 "365314"}
"green" {50 "f0fdf4"
100 "dcfce7"
200 "bbf7d0"
300 "86efac"
400 "4ade80"
500 "22c55e"
600 "16a34a"
700 "15803d"
800 "166534"
900 "14532d"}
"emerald" {50 "ecfdf5"
100 "d1fae5"
200 "a7f3d0"
300 "6ee7b7"
400 "34d399"
500 "10b981"
600 "059669"
700 "047857"
800 "065f46"
900 "064e3b"}
"teal" {50 "f0fdfa"
100 "ccfbf1"
200 "99f6e4"
300 "5eead4"
400 "2dd4bf"
500 "14b8a6"
600 "0d9488"
700 "0f766e"
800 "115e59"
900 "134e4a"}
"cyan" {50 "ecfeff"
100 "cffafe"
200 "a5f3fc"
300 "67e8f9"
400 "22d3ee"
500 "06b6d4"
600 "0891b2"
700 "0e7490"
800 "155e75"
900 "164e63"}
"sky" {50 "f0f9ff"
100 "e0f2fe"
200 "bae6fd"
300 "7dd3fc"
400 "38bdf8"
500 "0ea5e9"
600 "0284c7"
700 "0369a1"
800 "075985"
900 "0c4a6e"}
"blue" {50 "eff6ff"
100 "dbeafe"
200 "bfdbfe"
300 "93c5fd"
400 "60a5fa"
500 "3b82f6"
600 "2563eb"
700 "1d4ed8"
800 "1e40af"
900 "1e3a8a"}
"indigo" {50 "eef2ff"
100 "e0e7ff"
200 "c7d2fe"
300 "a5b4fc"
400 "818cf8"
500 "6366f1"
600 "4f46e5"
700 "4338ca"
800 "3730a3"
900 "312e81"}
"violet" {50 "f5f3ff"
100 "ede9fe"
200 "ddd6fe"
300 "c4b5fd"
400 "a78bfa"
500 "8b5cf6"
600 "7c3aed"
700 "6d28d9"
800 "5b21b6"
900 "4c1d95"}
"purple" {50 "faf5ff"
100 "f3e8ff"
200 "e9d5ff"
300 "d8b4fe"
400 "c084fc"
500 "a855f7"
600 "9333ea"
700 "7e22ce"
800 "6b21a8"
900 "581c87"}
"fuchsia" {50 "fdf4ff"
100 "fae8ff"
200 "f5d0fe"
300 "f0abfc"
400 "e879f9"
500 "d946ef"
600 "c026d3"
700 "a21caf"
800 "86198f"
900 "701a75"}
"pink" {50 "fdf2f8"
100 "fce7f3"
200 "fbcfe8"
300 "f9a8d4"
400 "f472b6"
500 "ec4899"
600 "db2777"
700 "be185d"
800 "9d174d"
900 "831843"}
"rose" {50 "fff1f2"
100 "ffe4e6"
200 "fecdd3"
300 "fda4af"
400 "fb7185"
500 "f43f5e"
600 "e11d48"
700 "be123c"
800 "9f1239"
900 "881337"}})
(def tw-v3-unified-colors-extended
"The colors defined in Tailwind as 'v3 Unified', plus some extra colors for backward compatibility."
(-> tw-v3-unified-colors
(into (set/rename-keys tw-v3-unified-colors {"lightBlue" "sky"
"warmGray" "stone"
"trueGray" "neutral"
"coolGray" "gray"
"blueGray" "slate"}))))
(def tw-v2-colors
"The colors from Tailwind CSS v2, for backward compatibility."
{"white" "ffffff"
"black" "000000"
"rose" {50 "fff1f2"
100 "ffe4e6"
200 "fecdd3"
300 "fda4af"
400 "fb7185"
500 "f43f5e"
600 "e11d48"
700 "be123c"
800 "9f1239"
900 "881337"}
"pink" {50 "fdf2f8"
100 "fce7f3"
200 "fbcfe8"
300 "f9a8d4"
400 "f472b6"
500 "ec4899"
600 "db2777"
700 "be185d"
800 "9d174d"
900 "831843"}
"fuchsia" {50 "fdf4ff"
100 "fae8ff"
200 "f5d0fe"
300 "f0abfc"
400 "e879f9"
500 "d946ef"
600 "c026d3"
700 "a21caf"
800 "86198f"
900 "701a75"}
"purple" {50 "faf5ff"
100 "f3e8ff"
200 "e9d5ff"
300 "d8b4fe"
400 "c084fc"
500 "a855f7"
600 "9333ea"
700 "7e22ce"
800 "6b21a8"
900 "581c87"}
"violet" {50 "f5f3ff"
100 "ede9fe"
200 "ddd6fe"
300 "c4b5fd"
400 "a78bfa"
500 "8b5cf6"
600 "7c3aed"
700 "6d28d9"
800 "5b21b6"
900 "4c1d95"}
"indigo" {50 "eef2ff"
100 "e0e7ff"
200 "c7d2fe"
300 "a5b4fc"
400 "818cf8"
500 "6366f1"
600 "4f46e5"
700 "4338ca"
800 "3730a3"
900 "312e81"}
"blue" {50 "eff6ff"
100 "dbeafe"
200 "bfdbfe"
300 "93c5fd"
400 "60a5fa"
500 "3b82f6"
600 "2563eb"
700 "1d4ed8"
800 "1e40af"
900 "1e3a8a"}
"lightBlue" {50 "f0f9ff"
100 "e0f2fe"
200 "bae6fd"
300 "7dd3fc"
400 "38bdf8"
500 "0ea5e9"
600 "0284c7"
700 "0369a1"
800 "075985"
900 "0c4a6e"}
"sky" {50 "f0f9ff"
100 "e0f2fe"
200 "bae6fd"
300 "7dd3fc"
400 "38bdf8"
500 "0ea5e9"
600 "0284c7"
700 "0369a1"
800 "075985"
900 "0c4a6e"}
"cyan" {50 "ecfeff"
100 "cffafe"
200 "a5f3fc"
300 "67e8f9"
400 "22d3ee"
500 "06b6d4"
600 "0891b2"
700 "0e7490"
800 "155e75"
900 "164e63"}
"teal" {50 "f0fdfa"
100 "ccfbf1"
200 "99f6e4"
300 "5eead4"
400 "2dd4bf"
500 "14b8a6"
600 "0d9488"
700 "0f766e"
800 "115e59"
900 "134e4a"}
"emerald" {50 "ecfdf5"
100 "d1fae5"
200 "a7f3d0"
300 "6ee7b7"
400 "34d399"
500 "10b981"
600 "059669"
700 "047857"
800 "065f46"
900 "064e3b"}
"green" {50 "f0fdf4"
100 "dcfce7"
200 "bbf7d0"
300 "86efac"
400 "4ade80"
500 "22c55e"
600 "16a34a"
700 "15803d"
800 "166534"
900 "14532d"}
"lime" {50 "f7fee7"
100 "ecfccb"
200 "d9f99d"
300 "bef264"
400 "a3e635"
500 "84cc16"
600 "65a30d"
700 "4d7c0f"
800 "3f6212"
900 "365314"}
"yellow" {50 "fefce8"
100 "fef9c3"
200 "fef08a"
300 "fde047"
400 "facc15"
500 "eab308"
600 "ca8a04"
700 "a16207"
800 "854d0e"
900 "713f12"}
"amber" {50 "fffbeb"
100 "fef3c7"
200 "fde68a"
300 "fcd34d"
400 "fbbf24"
500 "f59e0b"
600 "d97706"
700 "b45309"
800 "92400e"
900 "78350f"}
"orange" {50 "fff7ed"
100 "ffedd5"
200 "fed7aa"
300 "fdba74"
400 "fb923c"
500 "f97316"
600 "ea580c"
700 "c2410c"
800 "9a3412"
900 "7c2d12"}
"red" {50 "fef2f2"
100 "fee2e2"
200 "fecaca"
300 "fca5a5"
400 "f87171"
500 "ef4444"
600 "dc2626"
700 "b91c1c"
800 "991b1b"
900 "7f1d1d"}
"warmGray" {50 "fafaf9"
100 "f5f5f4"
200 "e7e5e4"
300 "d6d3d1"
400 "a8a29e"
500 "78716c"
600 "57534e"
700 "44403c"
800 "292524"
900 "1c1917"}
"trueGray" {50 "fafafa"
100 "f5f5f5"
200 "e5e5e5"
300 "d4d4d4"
400 "a3a3a3"
500 "737373"
600 "525252"
700 "404040"
800 "262626"
900 "171717"}
"gray" {50 "fafafa"
100 "f4f4f5"
200 "e4e4e7"
300 "d4d4d8"
400 "a1a1aa"
500 "71717a"
600 "52525b"
700 "3f3f46"
800 "27272a"
900 "18181b"}
"coolGray" {50 "f9fafb"
100 "f3f4f6"
200 "e5e7eb"
300 "d1d5db"
400 "9ca3af"
500 "6b7280"
600 "4b5563"
700 "374151"
800 "1f2937"
900 "111827"}
"blueGray" {50 "f8fafc"
100 "f1f5f9"
200 "e2e8f0"
300 "cbd5e1"
400 "94a3b8"
500 "64748b"
600 "475569"
700 "334155"
800 "1e293b"
900 "0f172a"}})
(defn flatten-color-map
"This function flattens the color maps like the ones defined above."
[color-map]
(into {}
(mapcat (fn [[name v]]
(cond
(string? v) [[name v]]
(map? v) (mapv (fn [[index rgba]]
[(str name "-" index) rgba])
v))))
color-map))
(defn color-rules [color-map]
(let [color-names (if (seq color-map)
(->> (keys color-map)
(map (fn [color] (str "'" color "'")))
(str/join " | "))
matches-nothing)]
(str "
color = color-rgb | color-rgba |
color-hsl | color-hsla |
special-color |
predefined-color-opacity
color-rgb = (<'#'> | <'rgb-'>) (#'[0-9a-f]{3}' | #'[0-9a-f]{6}')
color-rgba = (<'#'> | <'rgba-'>) (#'[0-9a-f]{4}' | #'[0-9a-f]{8}')
color-hsl = <'hsl-'> color-hue <'-'> color-saturation <'-'> color-lightness
color-hsla = <'hsla-'> color-hue <'-'> color-saturation <'-'> color-lightness <'-'> color-opacity
<color-hue> = number
<color-saturation> = number
<color-lightness> = number
<color-opacity> = number
special-color = 'transparent' | 'current'
predefined-color-opacity = predefined-color (<'-' | '/'> color-opacity)?
<predefined-color> = " color-names "
")))
(def ^:private zero-to-f "0123456789abcdef")
(defn- read-hex-value [hex-value]
(edn/read-string (str "0x" hex-value)))
(defn- byte->hex [byte]
(when byte
(str (nth zero-to-f (bit-and (bit-shift-right byte 4) 0xf))
(nth zero-to-f (bit-and byte 0xf)))))
(defn read-color
"Returns a 4-elements vector containing the color components, or a string.
The nil value is returned if a particular component is not specified in the input.
`color-map` is a function which takes a string and returns a string in the hexadecimal RRGGBB format.
`color-map` is typically a hashmap.
`color` is the data structure from the parser which matched a color."
[color-map color]
(let [[_ [type param1 param2 param3 param4]] color]
(case type
:color-rgb (case (count param1)
3 [(read-hex-value (str (nth param1 0) (nth param1 0)))
(read-hex-value (str (nth param1 1) (nth param1 1)))
(read-hex-value (str (nth param1 2) (nth param1 2)))
nil]
6 [(read-hex-value (subs param1 0 2))
(read-hex-value (subs param1 2 4))
(read-hex-value (subs param1 4 6))
nil])
:color-rgba (case (count param1)
4 [(read-hex-value (str (nth param1 0) (nth param1 0)))
(read-hex-value (str (nth param1 1) (nth param1 1)))
(read-hex-value (str (nth param1 2) (nth param1 2)))
(read-hex-value (str (nth param1 3) (nth param1 3)))]
8 [(read-hex-value (subs param1 0 2))
(read-hex-value (subs param1 2 4))
(read-hex-value (subs param1 4 6))
(read-hex-value (subs param1 6 8))])
(:color-hsl :color-hsla) (let [{:keys [red green blue]} (gc/hsl->rgb {:hue (value-unit->css param1)
:saturation (value-unit->css param2)
:lightness (value-unit->css param3)})
alpha (when (some? param4)
(value-unit->css param4 {:value-fn (comp clamp-0-255 int div-100 mul-255)}))]
[red green blue alpha])
:special-color ({"transparent" "transparent"
"current" "currentColor"} param1)
:predefined-color-opacity
(let [color-code (color-map param1) ;; color-name -> color-code
r (read-hex-value (subs color-code 0 2))
b (read-hex-value (subs color-code 2 4))
g (read-hex-value (subs color-code 4 6))
a (when (some? param2)
(value-unit->css param2 {:value-fn (comp clamp-0-255 int div-100 mul-255)}))]
[r b g a]))))
(defn as-transparent
"Transforms a color into a transparent one when possible."
[color]
(if (string? color)
color
(let [[r g b _] color]
[r g b 0])))
(defn color->css
"Transform a color structure into a css string."
[color]
(if (string? color)
color
(let [[r g b a] color]
(if (string? a)
(str "rgba("
r ","
g ","
b ","
a ")")
(str "#"
(byte->hex r)
(byte->hex g)
(byte->hex b)
(byte->hex a))))))