diff options
Diffstat (limited to 'src/util/colors.js')
-rw-r--r-- | src/util/colors.js | 62 |
1 files changed, 27 insertions, 35 deletions
diff --git a/src/util/colors.js b/src/util/colors.js index a0cc7486..dea67123 100644 --- a/src/util/colors.js +++ b/src/util/colors.js @@ -1,44 +1,36 @@ // Color and theming utility functions! Handy. -// Graciously stolen from https://stackoverflow.com/a/54071699! ::::) -// in: r,g,b in [0,1], out: h in [0,360) and s,l in [0,1] -export function rgb2hsl(r, g, b) { - let a = Math.max(r, g, b), - n = a - Math.min(r, g, b), - f = 1 - Math.abs(a + a - n - 1); - - let h = - n && - a == r - ? (g - b) / n - : a == g - ? 2 + (b - r) / n - : 4 + (r - g) / n; - - return [ - 60 * (h < 0 ? h + 6 : h), - f ? n / f : 0, - (a + a - n) / 2 - ]; -} +export function getColors(themeColor, { + // chroma.js external dependency (https://gka.github.io/chroma.js/) + chroma, +} = {}) { + if (!chroma) { + throw new Error('chroma.js library must be passed or bound for color manipulation'); + } + + const primary = chroma(themeColor); -export function getColors(primary) { - const [r, g, b] = primary - .slice(1) - .match(/[0-9a-fA-F]{2,2}/g) - .slice(0, 3) - .map((val) => parseInt(val, 16) / 255); + const dark = primary.luminance(0.02); + const dim = primary.desaturate(2).darken(1.5); - const [h, s, l] = rgb2hsl(r, g, b); + const bg = primary.luminance(0.008).desaturate(3.5).alpha(0.8); + const bgBlack = primary.saturate(1).luminance(0.0025).alpha(0.8); + const shadow = primary.desaturate(4).set('hsl.l', 0.05).alpha(0.8); - const dim = `hsl(${Math.round(h)}deg, ${Math.round(s * 50)}%, ${Math.round(l * 80)}%)`; - const bg = `hsla(${Math.round(h)}deg, ${Math.round(s * 15)}%, 12%, 0.80)`; + const hsl = primary.hsl(); + if (isNaN(hsl[0])) hsl[0] = 0; return { - primary, - dim, - bg, - rgb: [r, g, b], - hsl: [h, s, l], + primary: primary.hex(), + + dark: dark.hex(), + dim: dim.hex(), + + bg: bg.hex(), + bgBlack: bgBlack.hex(), + shadow: shadow.hex(), + + rgb: primary.rgb(), + hsl, }; } |