framework7
Version:
Full featured mobile HTML framework for building iOS & Android apps
879 lines • 137 kB
JavaScript
/* eslint-disable */
function signum(num) {
return num < 0 ? -1 : 0 === num ? 0 : 1;
}
function lerp(start, stop, amount) {
return (1 - amount) * start + amount * stop;
}
function clampInt(min, max, input) {
return input < min ? min : input > max ? max : input;
}
function clampDouble(min, max, input) {
return input < min ? min : input > max ? max : input;
}
function sanitizeDegreesInt(degrees) {
return (degrees %= 360) < 0 && (degrees += 360), degrees;
}
function sanitizeDegreesDouble(degrees) {
return (degrees %= 360) < 0 && (degrees += 360), degrees;
}
function matrixMultiply(row, matrix) {
return [row[0] * matrix[0][0] + row[1] * matrix[0][1] + row[2] * matrix[0][2], row[0] * matrix[1][0] + row[1] * matrix[1][1] + row[2] * matrix[1][2], row[0] * matrix[2][0] + row[1] * matrix[2][1] + row[2] * matrix[2][2]];
}
const SRGB_TO_XYZ = [[.41233895, .35762064, .18051042], [.2126, .7152, .0722], [.01932141, .11916382, .95034478]],
XYZ_TO_SRGB = [[3.2413774792388685, -1.5376652402851851, -.49885366846268053], [-.9691452513005321, 1.8758853451067872, .04156585616912061], [.05562093689691305, -.20395524564742123, 1.0571799111220335]],
WHITE_POINT_D65 = [95.047, 100, 108.883];
function argbFromRgb(red, green, blue) {
return (255 << 24 | (255 & red) << 16 | (255 & green) << 8 | 255 & blue) >>> 0;
}
function argbFromLinrgb(linrgb) {
return argbFromRgb(delinearized(linrgb[0]), delinearized(linrgb[1]), delinearized(linrgb[2]));
}
function redFromArgb(argb) {
return argb >> 16 & 255;
}
function greenFromArgb(argb) {
return argb >> 8 & 255;
}
function blueFromArgb(argb) {
return 255 & argb;
}
function argbFromXyz(x, y, z) {
const matrix = XYZ_TO_SRGB,
linearR = matrix[0][0] * x + matrix[0][1] * y + matrix[0][2] * z,
linearG = matrix[1][0] * x + matrix[1][1] * y + matrix[1][2] * z,
linearB = matrix[2][0] * x + matrix[2][1] * y + matrix[2][2] * z;
return argbFromRgb(delinearized(linearR), delinearized(linearG), delinearized(linearB));
}
function xyzFromArgb(argb) {
return matrixMultiply([linearized(redFromArgb(argb)), linearized(greenFromArgb(argb)), linearized(blueFromArgb(argb))], SRGB_TO_XYZ);
}
function labFromArgb(argb) {
const linearR = linearized(redFromArgb(argb)),
linearG = linearized(greenFromArgb(argb)),
linearB = linearized(blueFromArgb(argb)),
matrix = SRGB_TO_XYZ,
x = matrix[0][0] * linearR + matrix[0][1] * linearG + matrix[0][2] * linearB,
y = matrix[1][0] * linearR + matrix[1][1] * linearG + matrix[1][2] * linearB,
z = matrix[2][0] * linearR + matrix[2][1] * linearG + matrix[2][2] * linearB,
yNormalized = y / WHITE_POINT_D65[1],
zNormalized = z / WHITE_POINT_D65[2],
fx = labF(x / WHITE_POINT_D65[0]),
fy = labF(yNormalized);
return [116 * fy - 16, 500 * (fx - fy), 200 * (fy - labF(zNormalized))];
}
function argbFromLstar(lstar) {
const component = delinearized(yFromLstar(lstar));
return argbFromRgb(component, component, component);
}
function lstarFromArgb(argb) {
return 116 * labF(xyzFromArgb(argb)[1] / 100) - 16;
}
function yFromLstar(lstar) {
return 100 * labInvf((lstar + 16) / 116);
}
function lstarFromY(y) {
return 116 * labF(y / 100) - 16;
}
function linearized(rgbComponent) {
const normalized = rgbComponent / 255;
return normalized <= .040449936 ? normalized / 12.92 * 100 : 100 * Math.pow((normalized + .055) / 1.055, 2.4);
}
function delinearized(rgbComponent) {
const normalized = rgbComponent / 100;
let delinearized = 0;
return delinearized = normalized <= .0031308 ? 12.92 * normalized : 1.055 * Math.pow(normalized, 1 / 2.4) - .055, clampInt(0, 255, Math.round(255 * delinearized));
}
function whitePointD65() {
return WHITE_POINT_D65;
}
function labF(t) {
return t > 216 / 24389 ? Math.pow(t, 1 / 3) : (903.2962962962963 * t + 16) / 116;
}
function labInvf(ft) {
const ft3 = ft * ft * ft;
return ft3 > 216 / 24389 ? ft3 : (116 * ft - 16) / 903.2962962962963;
}
class ViewingConditions {
static make(whitePoint = whitePointD65(), adaptingLuminance = 200 / Math.PI * yFromLstar(50) / 100, backgroundLstar = 50, surround = 2, discountingIlluminant = !1) {
const xyz = whitePoint,
rW = .401288 * xyz[0] + .650173 * xyz[1] + -.051461 * xyz[2],
gW = -.250268 * xyz[0] + 1.204414 * xyz[1] + .045854 * xyz[2],
bW = -.002079 * xyz[0] + .048952 * xyz[1] + .953127 * xyz[2],
f = .8 + surround / 10,
c = f >= .9 ? lerp(.59, .69, 10 * (f - .9)) : lerp(.525, .59, 10 * (f - .8));
let d = discountingIlluminant ? 1 : f * (1 - 1 / 3.6 * Math.exp((-adaptingLuminance - 42) / 92));
d = d > 1 ? 1 : d < 0 ? 0 : d;
const nc = f,
rgbD = [d * (100 / rW) + 1 - d, d * (100 / gW) + 1 - d, d * (100 / bW) + 1 - d],
k = 1 / (5 * adaptingLuminance + 1),
k4 = k * k * k * k,
k4F = 1 - k4,
fl = k4 * adaptingLuminance + .1 * k4F * k4F * Math.cbrt(5 * adaptingLuminance),
n = yFromLstar(backgroundLstar) / whitePoint[1],
z = 1.48 + Math.sqrt(n),
nbb = .725 / Math.pow(n, .2),
ncb = nbb,
rgbAFactors = [Math.pow(fl * rgbD[0] * rW / 100, .42), Math.pow(fl * rgbD[1] * gW / 100, .42), Math.pow(fl * rgbD[2] * bW / 100, .42)],
rgbA = [400 * rgbAFactors[0] / (rgbAFactors[0] + 27.13), 400 * rgbAFactors[1] / (rgbAFactors[1] + 27.13), 400 * rgbAFactors[2] / (rgbAFactors[2] + 27.13)];
return new ViewingConditions(n, (2 * rgbA[0] + rgbA[1] + .05 * rgbA[2]) * nbb, nbb, ncb, c, nc, rgbD, fl, Math.pow(fl, .25), z);
}
constructor(n, aw, nbb, ncb, c, nc, rgbD, fl, fLRoot, z) {
this.n = n, this.aw = aw, this.nbb = nbb, this.ncb = ncb, this.c = c, this.nc = nc, this.rgbD = rgbD, this.fl = fl, this.fLRoot = fLRoot, this.z = z;
}
}
ViewingConditions.DEFAULT = ViewingConditions.make();
class Cam16 {
constructor(hue, chroma, j, q, m, s, jstar, astar, bstar) {
this.hue = hue, this.chroma = chroma, this.j = j, this.q = q, this.m = m, this.s = s, this.jstar = jstar, this.astar = astar, this.bstar = bstar;
}
distance(other) {
const dJ = this.jstar - other.jstar,
dA = this.astar - other.astar,
dB = this.bstar - other.bstar,
dEPrime = Math.sqrt(dJ * dJ + dA * dA + dB * dB);
return 1.41 * Math.pow(dEPrime, .63);
}
static fromInt(argb) {
return Cam16.fromIntInViewingConditions(argb, ViewingConditions.DEFAULT);
}
static fromIntInViewingConditions(argb, viewingConditions) {
const green = (65280 & argb) >> 8,
blue = 255 & argb,
redL = linearized((16711680 & argb) >> 16),
greenL = linearized(green),
blueL = linearized(blue),
x = .41233895 * redL + .35762064 * greenL + .18051042 * blueL,
y = .2126 * redL + .7152 * greenL + .0722 * blueL,
z = .01932141 * redL + .11916382 * greenL + .95034478 * blueL,
rC = .401288 * x + .650173 * y - .051461 * z,
gC = -.250268 * x + 1.204414 * y + .045854 * z,
bC = -.002079 * x + .048952 * y + .953127 * z,
rD = viewingConditions.rgbD[0] * rC,
gD = viewingConditions.rgbD[1] * gC,
bD = viewingConditions.rgbD[2] * bC,
rAF = Math.pow(viewingConditions.fl * Math.abs(rD) / 100, .42),
gAF = Math.pow(viewingConditions.fl * Math.abs(gD) / 100, .42),
bAF = Math.pow(viewingConditions.fl * Math.abs(bD) / 100, .42),
rA = 400 * signum(rD) * rAF / (rAF + 27.13),
gA = 400 * signum(gD) * gAF / (gAF + 27.13),
bA = 400 * signum(bD) * bAF / (bAF + 27.13),
a = (11 * rA + -12 * gA + bA) / 11,
b = (rA + gA - 2 * bA) / 9,
u = (20 * rA + 20 * gA + 21 * bA) / 20,
p2 = (40 * rA + 20 * gA + bA) / 20,
atanDegrees = 180 * Math.atan2(b, a) / Math.PI,
hue = atanDegrees < 0 ? atanDegrees + 360 : atanDegrees >= 360 ? atanDegrees - 360 : atanDegrees,
hueRadians = hue * Math.PI / 180,
ac = p2 * viewingConditions.nbb,
j = 100 * Math.pow(ac / viewingConditions.aw, viewingConditions.c * viewingConditions.z),
q = 4 / viewingConditions.c * Math.sqrt(j / 100) * (viewingConditions.aw + 4) * viewingConditions.fLRoot,
huePrime = hue < 20.14 ? hue + 360 : hue,
t = 5e4 / 13 * (.25 * (Math.cos(huePrime * Math.PI / 180 + 2) + 3.8)) * viewingConditions.nc * viewingConditions.ncb * Math.sqrt(a * a + b * b) / (u + .305),
alpha = Math.pow(t, .9) * Math.pow(1.64 - Math.pow(.29, viewingConditions.n), .73),
c = alpha * Math.sqrt(j / 100),
m = c * viewingConditions.fLRoot,
s = 50 * Math.sqrt(alpha * viewingConditions.c / (viewingConditions.aw + 4)),
jstar = (1 + 100 * .007) * j / (1 + .007 * j),
mstar = 1 / .0228 * Math.log(1 + .0228 * m),
astar = mstar * Math.cos(hueRadians),
bstar = mstar * Math.sin(hueRadians);
return new Cam16(hue, c, j, q, m, s, jstar, astar, bstar);
}
static fromJch(j, c, h) {
return Cam16.fromJchInViewingConditions(j, c, h, ViewingConditions.DEFAULT);
}
static fromJchInViewingConditions(j, c, h, viewingConditions) {
const q = 4 / viewingConditions.c * Math.sqrt(j / 100) * (viewingConditions.aw + 4) * viewingConditions.fLRoot,
m = c * viewingConditions.fLRoot,
alpha = c / Math.sqrt(j / 100),
s = 50 * Math.sqrt(alpha * viewingConditions.c / (viewingConditions.aw + 4)),
hueRadians = h * Math.PI / 180,
jstar = (1 + 100 * .007) * j / (1 + .007 * j),
mstar = 1 / .0228 * Math.log(1 + .0228 * m),
astar = mstar * Math.cos(hueRadians),
bstar = mstar * Math.sin(hueRadians);
return new Cam16(h, c, j, q, m, s, jstar, astar, bstar);
}
static fromUcs(jstar, astar, bstar) {
return Cam16.fromUcsInViewingConditions(jstar, astar, bstar, ViewingConditions.DEFAULT);
}
static fromUcsInViewingConditions(jstar, astar, bstar, viewingConditions) {
const a = astar,
b = bstar,
m = Math.sqrt(a * a + b * b),
c = (Math.exp(.0228 * m) - 1) / .0228 / viewingConditions.fLRoot;
let h = Math.atan2(b, a) * (180 / Math.PI);
h < 0 && (h += 360);
const j = jstar / (1 - .007 * (jstar - 100));
return Cam16.fromJchInViewingConditions(j, c, h, viewingConditions);
}
toInt() {
return this.viewed(ViewingConditions.DEFAULT);
}
viewed(viewingConditions) {
const alpha = 0 === this.chroma || 0 === this.j ? 0 : this.chroma / Math.sqrt(this.j / 100),
t = Math.pow(alpha / Math.pow(1.64 - Math.pow(.29, viewingConditions.n), .73), 1 / .9),
hRad = this.hue * Math.PI / 180,
eHue = .25 * (Math.cos(hRad + 2) + 3.8),
ac = viewingConditions.aw * Math.pow(this.j / 100, 1 / viewingConditions.c / viewingConditions.z),
p1 = eHue * (5e4 / 13) * viewingConditions.nc * viewingConditions.ncb,
p2 = ac / viewingConditions.nbb,
hSin = Math.sin(hRad),
hCos = Math.cos(hRad),
gamma = 23 * (p2 + .305) * t / (23 * p1 + 11 * t * hCos + 108 * t * hSin),
a = gamma * hCos,
b = gamma * hSin,
rA = (460 * p2 + 451 * a + 288 * b) / 1403,
gA = (460 * p2 - 891 * a - 261 * b) / 1403,
bA = (460 * p2 - 220 * a - 6300 * b) / 1403,
rCBase = Math.max(0, 27.13 * Math.abs(rA) / (400 - Math.abs(rA))),
rC = signum(rA) * (100 / viewingConditions.fl) * Math.pow(rCBase, 1 / .42),
gCBase = Math.max(0, 27.13 * Math.abs(gA) / (400 - Math.abs(gA))),
gC = signum(gA) * (100 / viewingConditions.fl) * Math.pow(gCBase, 1 / .42),
bCBase = Math.max(0, 27.13 * Math.abs(bA) / (400 - Math.abs(bA))),
bC = signum(bA) * (100 / viewingConditions.fl) * Math.pow(bCBase, 1 / .42),
rF = rC / viewingConditions.rgbD[0],
gF = gC / viewingConditions.rgbD[1],
bF = bC / viewingConditions.rgbD[2];
return argbFromXyz(1.86206786 * rF - 1.01125463 * gF + .14918677 * bF, .38752654 * rF + .62144744 * gF - .00897398 * bF, -.0158415 * rF - .03412294 * gF + 1.04996444 * bF);
}
static fromXyzInViewingConditions(x, y, z, viewingConditions) {
const rC = .401288 * x + .650173 * y - .051461 * z,
gC = -.250268 * x + 1.204414 * y + .045854 * z,
bC = -.002079 * x + .048952 * y + .953127 * z,
rD = viewingConditions.rgbD[0] * rC,
gD = viewingConditions.rgbD[1] * gC,
bD = viewingConditions.rgbD[2] * bC,
rAF = Math.pow(viewingConditions.fl * Math.abs(rD) / 100, .42),
gAF = Math.pow(viewingConditions.fl * Math.abs(gD) / 100, .42),
bAF = Math.pow(viewingConditions.fl * Math.abs(bD) / 100, .42),
rA = 400 * signum(rD) * rAF / (rAF + 27.13),
gA = 400 * signum(gD) * gAF / (gAF + 27.13),
bA = 400 * signum(bD) * bAF / (bAF + 27.13),
a = (11 * rA + -12 * gA + bA) / 11,
b = (rA + gA - 2 * bA) / 9,
u = (20 * rA + 20 * gA + 21 * bA) / 20,
p2 = (40 * rA + 20 * gA + bA) / 20,
atanDegrees = 180 * Math.atan2(b, a) / Math.PI,
hue = atanDegrees < 0 ? atanDegrees + 360 : atanDegrees >= 360 ? atanDegrees - 360 : atanDegrees,
hueRadians = hue * Math.PI / 180,
ac = p2 * viewingConditions.nbb,
J = 100 * Math.pow(ac / viewingConditions.aw, viewingConditions.c * viewingConditions.z),
Q = 4 / viewingConditions.c * Math.sqrt(J / 100) * (viewingConditions.aw + 4) * viewingConditions.fLRoot,
huePrime = hue < 20.14 ? hue + 360 : hue,
t = 5e4 / 13 * (1 / 4 * (Math.cos(huePrime * Math.PI / 180 + 2) + 3.8)) * viewingConditions.nc * viewingConditions.ncb * Math.sqrt(a * a + b * b) / (u + .305),
alpha = Math.pow(t, .9) * Math.pow(1.64 - Math.pow(.29, viewingConditions.n), .73),
C = alpha * Math.sqrt(J / 100),
M = C * viewingConditions.fLRoot,
s = 50 * Math.sqrt(alpha * viewingConditions.c / (viewingConditions.aw + 4)),
jstar = (1 + 100 * .007) * J / (1 + .007 * J),
mstar = Math.log(1 + .0228 * M) / .0228,
astar = mstar * Math.cos(hueRadians),
bstar = mstar * Math.sin(hueRadians);
return new Cam16(hue, C, J, Q, M, s, jstar, astar, bstar);
}
xyzInViewingConditions(viewingConditions) {
const alpha = 0 === this.chroma || 0 === this.j ? 0 : this.chroma / Math.sqrt(this.j / 100),
t = Math.pow(alpha / Math.pow(1.64 - Math.pow(.29, viewingConditions.n), .73), 1 / .9),
hRad = this.hue * Math.PI / 180,
eHue = .25 * (Math.cos(hRad + 2) + 3.8),
ac = viewingConditions.aw * Math.pow(this.j / 100, 1 / viewingConditions.c / viewingConditions.z),
p1 = eHue * (5e4 / 13) * viewingConditions.nc * viewingConditions.ncb,
p2 = ac / viewingConditions.nbb,
hSin = Math.sin(hRad),
hCos = Math.cos(hRad),
gamma = 23 * (p2 + .305) * t / (23 * p1 + 11 * t * hCos + 108 * t * hSin),
a = gamma * hCos,
b = gamma * hSin,
rA = (460 * p2 + 451 * a + 288 * b) / 1403,
gA = (460 * p2 - 891 * a - 261 * b) / 1403,
bA = (460 * p2 - 220 * a - 6300 * b) / 1403,
rCBase = Math.max(0, 27.13 * Math.abs(rA) / (400 - Math.abs(rA))),
rC = signum(rA) * (100 / viewingConditions.fl) * Math.pow(rCBase, 1 / .42),
gCBase = Math.max(0, 27.13 * Math.abs(gA) / (400 - Math.abs(gA))),
gC = signum(gA) * (100 / viewingConditions.fl) * Math.pow(gCBase, 1 / .42),
bCBase = Math.max(0, 27.13 * Math.abs(bA) / (400 - Math.abs(bA))),
bC = signum(bA) * (100 / viewingConditions.fl) * Math.pow(bCBase, 1 / .42),
rF = rC / viewingConditions.rgbD[0],
gF = gC / viewingConditions.rgbD[1],
bF = bC / viewingConditions.rgbD[2];
return [1.86206786 * rF - 1.01125463 * gF + .14918677 * bF, .38752654 * rF + .62144744 * gF - .00897398 * bF, -.0158415 * rF - .03412294 * gF + 1.04996444 * bF];
}
}
class HctSolver {
static sanitizeRadians(angle) {
return (angle + 8 * Math.PI) % (2 * Math.PI);
}
static trueDelinearized(rgbComponent) {
const normalized = rgbComponent / 100;
let delinearized = 0;
return delinearized = normalized <= .0031308 ? 12.92 * normalized : 1.055 * Math.pow(normalized, 1 / 2.4) - .055, 255 * delinearized;
}
static chromaticAdaptation(component) {
const af = Math.pow(Math.abs(component), .42);
return 400 * signum(component) * af / (af + 27.13);
}
static hueOf(linrgb) {
const scaledDiscount = matrixMultiply(linrgb, HctSolver.SCALED_DISCOUNT_FROM_LINRGB),
rA = HctSolver.chromaticAdaptation(scaledDiscount[0]),
gA = HctSolver.chromaticAdaptation(scaledDiscount[1]),
bA = HctSolver.chromaticAdaptation(scaledDiscount[2]),
a = (11 * rA + -12 * gA + bA) / 11,
b = (rA + gA - 2 * bA) / 9;
return Math.atan2(b, a);
}
static areInCyclicOrder(a, b, c) {
return HctSolver.sanitizeRadians(b - a) < HctSolver.sanitizeRadians(c - a);
}
static intercept(source, mid, target) {
return (mid - source) / (target - source);
}
static lerpPoint(source, t, target) {
return [source[0] + (target[0] - source[0]) * t, source[1] + (target[1] - source[1]) * t, source[2] + (target[2] - source[2]) * t];
}
static setCoordinate(source, coordinate, target, axis) {
const t = HctSolver.intercept(source[axis], coordinate, target[axis]);
return HctSolver.lerpPoint(source, t, target);
}
static isBounded(x) {
return 0 <= x && x <= 100;
}
static nthVertex(y, n) {
const kR = HctSolver.Y_FROM_LINRGB[0],
kG = HctSolver.Y_FROM_LINRGB[1],
kB = HctSolver.Y_FROM_LINRGB[2],
coordA = n % 4 <= 1 ? 0 : 100,
coordB = n % 2 == 0 ? 0 : 100;
if (n < 4) {
const g = coordA,
b = coordB,
r = (y - g * kG - b * kB) / kR;
return HctSolver.isBounded(r) ? [r, g, b] : [-1, -1, -1];
}
if (n < 8) {
const b = coordA,
r = coordB,
g = (y - r * kR - b * kB) / kG;
return HctSolver.isBounded(g) ? [r, g, b] : [-1, -1, -1];
}
{
const r = coordA,
g = coordB,
b = (y - r * kR - g * kG) / kB;
return HctSolver.isBounded(b) ? [r, g, b] : [-1, -1, -1];
}
}
static bisectToSegment(y, targetHue) {
let left = [-1, -1, -1],
right = left,
leftHue = 0,
rightHue = 0,
initialized = !1,
uncut = !0;
for (let n = 0; n < 12; n++) {
const mid = HctSolver.nthVertex(y, n);
if (mid[0] < 0) continue;
const midHue = HctSolver.hueOf(mid);
initialized ? (uncut || HctSolver.areInCyclicOrder(leftHue, midHue, rightHue)) && (uncut = !1, HctSolver.areInCyclicOrder(leftHue, targetHue, midHue) ? (right = mid, rightHue = midHue) : (left = mid, leftHue = midHue)) : (left = mid, right = mid, leftHue = midHue, rightHue = midHue, initialized = !0);
}
return [left, right];
}
static midpoint(a, b) {
return [(a[0] + b[0]) / 2, (a[1] + b[1]) / 2, (a[2] + b[2]) / 2];
}
static criticalPlaneBelow(x) {
return Math.floor(x - .5);
}
static criticalPlaneAbove(x) {
return Math.ceil(x - .5);
}
static bisectToLimit(y, targetHue) {
const segment = HctSolver.bisectToSegment(y, targetHue);
let left = segment[0],
leftHue = HctSolver.hueOf(left),
right = segment[1];
for (let axis = 0; axis < 3; axis++) if (left[axis] !== right[axis]) {
let lPlane = -1,
rPlane = 255;
left[axis] < right[axis] ? (lPlane = HctSolver.criticalPlaneBelow(HctSolver.trueDelinearized(left[axis])), rPlane = HctSolver.criticalPlaneAbove(HctSolver.trueDelinearized(right[axis]))) : (lPlane = HctSolver.criticalPlaneAbove(HctSolver.trueDelinearized(left[axis])), rPlane = HctSolver.criticalPlaneBelow(HctSolver.trueDelinearized(right[axis])));
for (let i = 0; i < 8 && !(Math.abs(rPlane - lPlane) <= 1); i++) {
const mPlane = Math.floor((lPlane + rPlane) / 2),
midPlaneCoordinate = HctSolver.CRITICAL_PLANES[mPlane],
mid = HctSolver.setCoordinate(left, midPlaneCoordinate, right, axis),
midHue = HctSolver.hueOf(mid);
HctSolver.areInCyclicOrder(leftHue, targetHue, midHue) ? (right = mid, rPlane = mPlane) : (left = mid, leftHue = midHue, lPlane = mPlane);
}
}
return HctSolver.midpoint(left, right);
}
static inverseChromaticAdaptation(adapted) {
const adaptedAbs = Math.abs(adapted),
base = Math.max(0, 27.13 * adaptedAbs / (400 - adaptedAbs));
return signum(adapted) * Math.pow(base, 1 / .42);
}
static findResultByJ(hueRadians, chroma, y) {
let j = 11 * Math.sqrt(y);
const viewingConditions = ViewingConditions.DEFAULT,
tInnerCoeff = 1 / Math.pow(1.64 - Math.pow(.29, viewingConditions.n), .73),
p1 = .25 * (Math.cos(hueRadians + 2) + 3.8) * (5e4 / 13) * viewingConditions.nc * viewingConditions.ncb,
hSin = Math.sin(hueRadians),
hCos = Math.cos(hueRadians);
for (let iterationRound = 0; iterationRound < 5; iterationRound++) {
const jNormalized = j / 100,
alpha = 0 === chroma || 0 === j ? 0 : chroma / Math.sqrt(jNormalized),
t = Math.pow(alpha * tInnerCoeff, 1 / .9),
p2 = viewingConditions.aw * Math.pow(jNormalized, 1 / viewingConditions.c / viewingConditions.z) / viewingConditions.nbb,
gamma = 23 * (p2 + .305) * t / (23 * p1 + 11 * t * hCos + 108 * t * hSin),
a = gamma * hCos,
b = gamma * hSin,
rA = (460 * p2 + 451 * a + 288 * b) / 1403,
gA = (460 * p2 - 891 * a - 261 * b) / 1403,
bA = (460 * p2 - 220 * a - 6300 * b) / 1403,
linrgb = matrixMultiply([HctSolver.inverseChromaticAdaptation(rA), HctSolver.inverseChromaticAdaptation(gA), HctSolver.inverseChromaticAdaptation(bA)], HctSolver.LINRGB_FROM_SCALED_DISCOUNT);
if (linrgb[0] < 0 || linrgb[1] < 0 || linrgb[2] < 0) return 0;
const kR = HctSolver.Y_FROM_LINRGB[0],
kG = HctSolver.Y_FROM_LINRGB[1],
kB = HctSolver.Y_FROM_LINRGB[2],
fnj = kR * linrgb[0] + kG * linrgb[1] + kB * linrgb[2];
if (fnj <= 0) return 0;
if (4 === iterationRound || Math.abs(fnj - y) < .002) return linrgb[0] > 100.01 || linrgb[1] > 100.01 || linrgb[2] > 100.01 ? 0 : argbFromLinrgb(linrgb);
j -= (fnj - y) * j / (2 * fnj);
}
return 0;
}
static solveToInt(hueDegrees, chroma, lstar) {
if (chroma < 1e-4 || lstar < 1e-4 || lstar > 99.9999) return argbFromLstar(lstar);
const hueRadians = (hueDegrees = sanitizeDegreesDouble(hueDegrees)) / 180 * Math.PI,
y = yFromLstar(lstar),
exactAnswer = HctSolver.findResultByJ(hueRadians, chroma, y);
if (0 !== exactAnswer) return exactAnswer;
return argbFromLinrgb(HctSolver.bisectToLimit(y, hueRadians));
}
static solveToCam(hueDegrees, chroma, lstar) {
return Cam16.fromInt(HctSolver.solveToInt(hueDegrees, chroma, lstar));
}
}
HctSolver.SCALED_DISCOUNT_FROM_LINRGB = [[.001200833568784504, .002389694492170889, .0002795742885861124], [.0005891086651375999, .0029785502573438758, .0003270666104008398], [.00010146692491640572, .0005364214359186694, .0032979401770712076]], HctSolver.LINRGB_FROM_SCALED_DISCOUNT = [[1373.2198709594231, -1100.4251190754821, -7.278681089101213], [-271.815969077903, 559.6580465940733, -32.46047482791194], [1.9622899599665666, -57.173814538844006, 308.7233197812385]], HctSolver.Y_FROM_LINRGB = [.2126, .7152, .0722], HctSolver.CRITICAL_PLANES = [.015176349177441876, .045529047532325624, .07588174588720938, .10623444424209313, .13658714259697685, .16693984095186062, .19729253930674434, .2276452376616281, .2579979360165119, .28835063437139563, .3188300904430532, .350925934958123, .3848314933096426, .42057480301049466, .458183274052838, .4976837250274023, .5391024159806381, .5824650784040898, .6277969426914107, .6751227633498623, .7244668422128921, .775853049866786, .829304845476233, .8848452951698498, .942497089126609, 1.0022825574869039, 1.0642236851973577, 1.1283421258858297, 1.1946592148522128, 1.2631959812511864, 1.3339731595349034, 1.407011200216447, 1.4823302800086415, 1.5599503113873272, 1.6398909516233677, 1.7221716113234105, 1.8068114625156377, 1.8938294463134073, 1.9832442801866852, 2.075074464868551, 2.1693382909216234, 2.2660538449872063, 2.36523901573795, 2.4669114995532007, 2.5710888059345764, 2.6777882626779785, 2.7870270208169257, 2.898822059350997, 3.0131901897720907, 3.1301480604002863, 3.2497121605402226, 3.3718988244681087, 3.4967242352587946, 3.624204428461639, 3.754355295633311, 3.887192587735158, 4.022731918402185, 4.160988767090289, 4.301978482107941, 4.445716283538092, 4.592217266055746, 4.741496401646282, 4.893568542229298, 5.048448422192488, 5.20615066083972, 5.3666897647573375, 5.5300801301023865, 5.696336044816294, 5.865471690767354, 6.037501145825082, 6.212438385869475, 6.390297286737924, 6.571091626112461, 6.7548350853498045, 6.941541251256611, 7.131223617812143, 7.323895587840543, 7.5195704746346665, 7.7182615035334345, 7.919981813454504, 8.124744458384042, 8.332562408825165, 8.543448553206703, 8.757415699253682, 8.974476575321063, 9.194643831691977, 9.417930041841839, 9.644347703669503, 9.873909240696694, 10.106627003236781, 10.342513269534024, 10.58158024687427, 10.8238400726681, 11.069304815507364, 11.317986476196008, 11.569896988756009, 11.825048221409341, 12.083451977536606, 12.345119996613247, 12.610063955123938, 12.878295467455942, 13.149826086772048, 13.42466730586372, 13.702830557985108, 13.984327217668513, 14.269168601521828, 14.55736596900856, 14.848930523210871, 15.143873411576273, 15.44220572664832, 15.743938506781891, 16.04908273684337, 16.35764934889634, 16.66964922287304, 16.985093187232053, 17.30399201960269, 17.62635644741625, 17.95219714852476, 18.281524751807332, 18.614349837764564, 18.95068293910138, 19.290534541298456, 19.633915083172692, 19.98083495742689, 20.331304511189067, 20.685334046541502, 21.042933821039977, 21.404114048223256, 21.76888489811322, 22.137256497705877, 22.50923893145328, 22.884842241736916, 23.264076429332462, 23.6469514538663, 24.033477234264016, 24.42366364919083, 24.817520537484558, 25.21505769858089, 25.61628489293138, 26.021211842414342, 26.429848230738664, 26.842203703840827, 27.258287870275353, 27.678110301598522, 28.10168053274597, 28.529008062403893, 28.96010235337422, 29.39497283293396, 29.83362889318845, 30.276079891419332, 30.722335150426627, 31.172403958865512, 31.62629557157785, 32.08401920991837, 32.54558406207592, 33.010999283389665, 33.4802739966603, 33.953417292456834, 34.430438229418264, 34.911345834551085, 35.39614910352207, 35.88485700094671, 36.37747846067349, 36.87402238606382, 37.37449765026789, 37.87891309649659, 38.38727753828926, 38.89959975977785, 39.41588851594697, 39.93615253289054, 40.460400508064545, 40.98864111053629, 41.520882981230194, 42.05713473317016, 42.597404951718396, 43.141702194811224, 43.6900349931913, 44.24241185063697, 44.798841244188324, 45.35933162437017, 45.92389141541209, 46.49252901546552, 47.065252796817916, 47.64207110610409, 48.22299226451468, 48.808024568002054, 49.3971762874833, 49.9904556690408, 50.587870934119984, 51.189430279724725, 51.79514187861014, 52.40501387947288, 53.0190544071392, 53.637271562750364, 54.259673423945976, 54.88626804504493, 55.517063457223934, 56.15206766869424, 56.79128866487574, 57.43473440856916, 58.08241284012621, 58.734331877617365, 59.39049941699807, 60.05092333227251, 60.715611475655585, 61.38457167773311, 62.057811747619894, 62.7353394731159, 63.417162620860914, 64.10328893648692, 64.79372614476921, 65.48848194977529, 66.18756403501224, 66.89098006357258, 67.59873767827808, 68.31084450182222, 69.02730813691093, 69.74813616640164, 70.47333615344107, 71.20291564160104, 71.93688215501312, 72.67524319850172, 73.41800625771542, 74.16517879925733, 74.9167682708136, 75.67278210128072, 76.43322770089146, 77.1981124613393, 77.96744375590167, 78.74122893956174, 79.51947534912904, 80.30219030335869, 81.08938110306934, 81.88105503125999, 82.67721935322541, 83.4778813166706, 84.28304815182372, 85.09272707154808, 85.90692527145302, 86.72564993000343, 87.54890820862819, 88.3767072518277, 89.2090541872801, 90.04595612594655, 90.88742016217518, 91.73345337380438, 92.58406282226491, 93.43925555268066, 94.29903859396902, 95.16341895893969, 96.03240364439274, 96.9059996312159, 97.78421388448044, 98.6670533535366, 99.55452497210776];
class Hct {
static from(hue, chroma, tone) {
return new Hct(HctSolver.solveToInt(hue, chroma, tone));
}
static fromInt(argb) {
return new Hct(argb);
}
toInt() {
return this.argb;
}
get hue() {
return this.internalHue;
}
set hue(newHue) {
this.setInternalState(HctSolver.solveToInt(newHue, this.internalChroma, this.internalTone));
}
get chroma() {
return this.internalChroma;
}
set chroma(newChroma) {
this.setInternalState(HctSolver.solveToInt(this.internalHue, newChroma, this.internalTone));
}
get tone() {
return this.internalTone;
}
set tone(newTone) {
this.setInternalState(HctSolver.solveToInt(this.internalHue, this.internalChroma, newTone));
}
setValue(propertyName, value) {
this[propertyName] = value;
}
toString() {
return `HCT(${this.hue.toFixed(0)}, ${this.chroma.toFixed(0)}, ${this.tone.toFixed(0)})`;
}
static isBlue(hue) {
return hue >= 250 && hue < 270;
}
static isYellow(hue) {
return hue >= 105 && hue < 125;
}
static isCyan(hue) {
return hue >= 170 && hue < 207;
}
constructor(argb) {
this.argb = argb;
const cam = Cam16.fromInt(argb);
this.internalHue = cam.hue, this.internalChroma = cam.chroma, this.internalTone = lstarFromArgb(argb), this.argb = argb;
}
setInternalState(argb) {
const cam = Cam16.fromInt(argb);
this.internalHue = cam.hue, this.internalChroma = cam.chroma, this.internalTone = lstarFromArgb(argb), this.argb = argb;
}
inViewingConditions(vc) {
const viewedInVc = Cam16.fromInt(this.toInt()).xyzInViewingConditions(vc),
recastInVc = Cam16.fromXyzInViewingConditions(viewedInVc[0], viewedInVc[1], viewedInVc[2], ViewingConditions.make());
return Hct.from(recastInVc.hue, recastInVc.chroma, lstarFromY(viewedInVc[1]));
}
}
class Contrast {
static ratioOfTones(toneA, toneB) {
return toneA = clampDouble(0, 100, toneA), toneB = clampDouble(0, 100, toneB), Contrast.ratioOfYs(yFromLstar(toneA), yFromLstar(toneB));
}
static ratioOfYs(y1, y2) {
const lighter = y1 > y2 ? y1 : y2;
return (lighter + 5) / ((lighter === y2 ? y1 : y2) + 5);
}
static lighter(tone, ratio) {
if (tone < 0 || tone > 100) return -1;
const darkY = yFromLstar(tone),
lightY = ratio * (darkY + 5) - 5,
realContrast = Contrast.ratioOfYs(lightY, darkY),
delta = Math.abs(realContrast - ratio);
if (realContrast < ratio && delta > .04) return -1;
const returnValue = lstarFromY(lightY) + .4;
return returnValue < 0 || returnValue > 100 ? -1 : returnValue;
}
static darker(tone, ratio) {
if (tone < 0 || tone > 100) return -1;
const lightY = yFromLstar(tone),
darkY = (lightY + 5) / ratio - 5,
realContrast = Contrast.ratioOfYs(lightY, darkY),
delta = Math.abs(realContrast - ratio);
if (realContrast < ratio && delta > .04) return -1;
const returnValue = lstarFromY(darkY) - .4;
return returnValue < 0 || returnValue > 100 ? -1 : returnValue;
}
static lighterUnsafe(tone, ratio) {
const lighterSafe = Contrast.lighter(tone, ratio);
return lighterSafe < 0 ? 100 : lighterSafe;
}
static darkerUnsafe(tone, ratio) {
const darkerSafe = Contrast.darker(tone, ratio);
return darkerSafe < 0 ? 0 : darkerSafe;
}
}
class DislikeAnalyzer {
static isDisliked(hct) {
const huePasses = Math.round(hct.hue) >= 90 && Math.round(hct.hue) <= 111,
chromaPasses = Math.round(hct.chroma) > 16,
tonePasses = Math.round(hct.tone) < 65;
return huePasses && chromaPasses && tonePasses;
}
static fixIfDisliked(hct) {
return DislikeAnalyzer.isDisliked(hct) ? Hct.from(hct.hue, hct.chroma, 70) : hct;
}
}
function validateExtendedColor(originalColor, specVersion, extendedColor) {
if (originalColor.name !== extendedColor.name) throw new Error(`Attempting to extend color ${originalColor.name} with color ${extendedColor.name} of different name for spec version ${specVersion}.`);
if (originalColor.isBackground !== extendedColor.isBackground) throw new Error(`Attempting to extend color ${originalColor.name} as a ${originalColor.isBackground ? "background" : "foreground"} with color ${extendedColor.name} as a ${extendedColor.isBackground ? "background" : "foreground"} for spec version ${specVersion}.`);
}
function extendSpecVersion(originlColor, specVersion, extendedColor) {
return validateExtendedColor(originlColor, specVersion, extendedColor), DynamicColor.fromPalette({
name: originlColor.name,
palette: s => s.specVersion === specVersion ? extendedColor.palette(s) : originlColor.palette(s),
tone: s => s.specVersion === specVersion ? extendedColor.tone(s) : originlColor.tone(s),
isBackground: originlColor.isBackground,
chromaMultiplier: s => {
const chromaMultiplier = s.specVersion === specVersion ? extendedColor.chromaMultiplier : originlColor.chromaMultiplier;
return void 0 !== chromaMultiplier ? chromaMultiplier(s) : 1;
},
background: s => {
const background = s.specVersion === specVersion ? extendedColor.background : originlColor.background;
return void 0 !== background ? background(s) : void 0;
},
secondBackground: s => {
const secondBackground = s.specVersion === specVersion ? extendedColor.secondBackground : originlColor.secondBackground;
return void 0 !== secondBackground ? secondBackground(s) : void 0;
},
contrastCurve: s => {
const contrastCurve = s.specVersion === specVersion ? extendedColor.contrastCurve : originlColor.contrastCurve;
return void 0 !== contrastCurve ? contrastCurve(s) : void 0;
},
toneDeltaPair: s => {
const toneDeltaPair = s.specVersion === specVersion ? extendedColor.toneDeltaPair : originlColor.toneDeltaPair;
return void 0 !== toneDeltaPair ? toneDeltaPair(s) : void 0;
}
});
}
class DynamicColor {
static fromPalette(args) {
return new DynamicColor(args.name ?? "", args.palette, args.tone ?? DynamicColor.getInitialToneFromBackground(args.background), args.isBackground ?? !1, args.chromaMultiplier, args.background, args.secondBackground, args.contrastCurve, args.toneDeltaPair);
}
static getInitialToneFromBackground(background) {
return void 0 === background ? s => 50 : s => background(s) ? background(s).getTone(s) : 50;
}
constructor(name, palette, tone, isBackground, chromaMultiplier, background, secondBackground, contrastCurve, toneDeltaPair) {
if (this.name = name, this.palette = palette, this.tone = tone, this.isBackground = isBackground, this.chromaMultiplier = chromaMultiplier, this.background = background, this.secondBackground = secondBackground, this.contrastCurve = contrastCurve, this.toneDeltaPair = toneDeltaPair, this.hctCache = new Map(), !background && secondBackground) throw new Error(`Color ${name} has secondBackgrounddefined, but background is not defined.`);
if (!background && contrastCurve) throw new Error(`Color ${name} has contrastCurvedefined, but background is not defined.`);
if (background && !contrastCurve) throw new Error(`Color ${name} has backgrounddefined, but contrastCurve is not defined.`);
}
clone() {
return DynamicColor.fromPalette({
name: this.name,
palette: this.palette,
tone: this.tone,
isBackground: this.isBackground,
chromaMultiplier: this.chromaMultiplier,
background: this.background,
secondBackground: this.secondBackground,
contrastCurve: this.contrastCurve,
toneDeltaPair: this.toneDeltaPair
});
}
clearCache() {
this.hctCache.clear();
}
getArgb(scheme) {
return this.getHct(scheme).toInt();
}
getHct(scheme) {
const cachedAnswer = this.hctCache.get(scheme);
if (null != cachedAnswer) return cachedAnswer;
const answer = getSpec$1(scheme.specVersion).getHct(scheme, this);
return this.hctCache.size > 4 && this.hctCache.clear(), this.hctCache.set(scheme, answer), answer;
}
getTone(scheme) {
return getSpec$1(scheme.specVersion).getTone(scheme, this);
}
static foregroundTone(bgTone, ratio) {
const lighterTone = Contrast.lighterUnsafe(bgTone, ratio),
darkerTone = Contrast.darkerUnsafe(bgTone, ratio),
lighterRatio = Contrast.ratioOfTones(lighterTone, bgTone),
darkerRatio = Contrast.ratioOfTones(darkerTone, bgTone);
if (DynamicColor.tonePrefersLightForeground(bgTone)) {
const negligibleDifference = Math.abs(lighterRatio - darkerRatio) < .1 && lighterRatio < ratio && darkerRatio < ratio;
return lighterRatio >= ratio || lighterRatio >= darkerRatio || negligibleDifference ? lighterTone : darkerTone;
}
return darkerRatio >= ratio || darkerRatio >= lighterRatio ? darkerTone : lighterTone;
}
static tonePrefersLightForeground(tone) {
return Math.round(tone) < 60;
}
static toneAllowsLightForeground(tone) {
return Math.round(tone) <= 49;
}
static enableLightForeground(tone) {
return DynamicColor.tonePrefersLightForeground(tone) && !DynamicColor.toneAllowsLightForeground(tone) ? 49 : tone;
}
}
class ColorCalculationDelegateImpl2021 {
getHct(scheme, color) {
const tone = color.getTone(scheme);
return color.palette(scheme).getHct(tone);
}
getTone(scheme, color) {
const decreasingContrast = scheme.contrastLevel < 0,
toneDeltaPair = color.toneDeltaPair ? color.toneDeltaPair(scheme) : void 0;
if (toneDeltaPair) {
const roleA = toneDeltaPair.roleA,
roleB = toneDeltaPair.roleB,
delta = toneDeltaPair.delta,
polarity = toneDeltaPair.polarity,
stayTogether = toneDeltaPair.stayTogether,
aIsNearer = "nearer" === polarity || "lighter" === polarity && !scheme.isDark || "darker" === polarity && scheme.isDark,
nearer = aIsNearer ? roleA : roleB,
farther = aIsNearer ? roleB : roleA,
amNearer = color.name === nearer.name,
expansionDir = scheme.isDark ? 1 : -1;
let nTone = nearer.tone(scheme),
fTone = farther.tone(scheme);
if (color.background && nearer.contrastCurve && farther.contrastCurve) {
const bg = color.background(scheme),
nContrastCurve = nearer.contrastCurve(scheme),
fContrastCurve = farther.contrastCurve(scheme);
if (bg && nContrastCurve && fContrastCurve) {
const bgTone = bg.getTone(scheme),
nContrast = nContrastCurve.get(scheme.contrastLevel),
fContrast = fContrastCurve.get(scheme.contrastLevel);
Contrast.ratioOfTones(bgTone, nTone) < nContrast && (nTone = DynamicColor.foregroundTone(bgTone, nContrast)), Contrast.ratioOfTones(bgTone, fTone) < fContrast && (fTone = DynamicColor.foregroundTone(bgTone, fContrast)), decreasingContrast && (nTone = DynamicColor.foregroundTone(bgTone, nContrast), fTone = DynamicColor.foregroundTone(bgTone, fContrast));
}
}
return (fTone - nTone) * expansionDir < delta && (fTone = clampDouble(0, 100, nTone + delta * expansionDir), (fTone - nTone) * expansionDir >= delta || (nTone = clampDouble(0, 100, fTone - delta * expansionDir))), 50 <= nTone && nTone < 60 ? expansionDir > 0 ? (nTone = 60, fTone = Math.max(fTone, nTone + delta * expansionDir)) : (nTone = 49, fTone = Math.min(fTone, nTone + delta * expansionDir)) : 50 <= fTone && fTone < 60 && (stayTogether ? expansionDir > 0 ? (nTone = 60, fTone = Math.max(fTone, nTone + delta * expansionDir)) : (nTone = 49, fTone = Math.min(fTone, nTone + delta * expansionDir)) : fTone = expansionDir > 0 ? 60 : 49), amNearer ? nTone : fTone;
}
{
let answer = color.tone(scheme);
if (null == color.background || void 0 === color.background(scheme) || null == color.contrastCurve || void 0 === color.contrastCurve(scheme)) return answer;
const bgTone = color.background(scheme).getTone(scheme),
desiredRatio = color.contrastCurve(scheme).get(scheme.contrastLevel);
if (Contrast.ratioOfTones(bgTone, answer) >= desiredRatio || (answer = DynamicColor.foregroundTone(bgTone, desiredRatio)), decreasingContrast && (answer = DynamicColor.foregroundTone(bgTone, desiredRatio)), color.isBackground && 50 <= answer && answer < 60 && (answer = Contrast.ratioOfTones(49, bgTone) >= desiredRatio ? 49 : 60), null == color.secondBackground || void 0 === color.secondBackground(scheme)) return answer;
const [bg1, bg2] = [color.background, color.secondBackground],
[bgTone1, bgTone2] = [bg1(scheme).getTone(scheme), bg2(scheme).getTone(scheme)],
[upper, lower] = [Math.max(bgTone1, bgTone2), Math.min(bgTone1, bgTone2)];
if (Contrast.ratioOfTones(upper, answer) >= desiredRatio && Contrast.ratioOfTones(lower, answer) >= desiredRatio) return answer;
const lightOption = Contrast.lighter(upper, desiredRatio),
darkOption = Contrast.darker(lower, desiredRatio),
availables = [];
-1 !== lightOption && availables.push(lightOption), -1 !== darkOption && availables.push(darkOption);
return DynamicColor.tonePrefersLightForeground(bgTone1) || DynamicColor.tonePrefersLightForeground(bgTone2) ? lightOption < 0 ? 100 : lightOption : 1 === availables.length ? availables[0] : darkOption < 0 ? 0 : darkOption;
}
}
}
class ColorCalculationDelegateImpl2025 {
getHct(scheme, color) {
const palette = color.palette(scheme),
tone = color.getTone(scheme),
hue = palette.hue,
chroma = palette.chroma * (color.chromaMultiplier ? color.chromaMultiplier(scheme) : 1);
return Hct.from(hue, chroma, tone);
}
getTone(scheme, color) {
const toneDeltaPair = color.toneDeltaPair ? color.toneDeltaPair(scheme) : void 0;
if (toneDeltaPair) {
const roleA = toneDeltaPair.roleA,
roleB = toneDeltaPair.roleB,
polarity = toneDeltaPair.polarity,
constraint = toneDeltaPair.constraint,
absoluteDelta = "darker" === polarity || "relative_lighter" === polarity && scheme.isDark || "relative_darker" === polarity && !scheme.isDark ? -toneDeltaPair.delta : toneDeltaPair.delta,
amRoleA = color.name === roleA.name,
refRole = amRoleA ? roleB : roleA;
let selfTone = (amRoleA ? roleA : roleB).tone(scheme),
refTone = refRole.getTone(scheme);
const relativeDelta = absoluteDelta * (amRoleA ? 1 : -1);
if ("exact" === constraint ? selfTone = clampDouble(0, 100, refTone + relativeDelta) : "nearer" === constraint ? selfTone = clampDouble(0, 100, relativeDelta > 0 ? clampDouble(refTone, refTone + relativeDelta, selfTone) : clampDouble(refTone + relativeDelta, refTone, selfTone)) : "farther" === constraint && (selfTone = relativeDelta > 0 ? clampDouble(refTone + relativeDelta, 100, selfTone) : clampDouble(0, refTone + relativeDelta, selfTone)), color.background && color.contrastCurve) {
const background = color.background(scheme),
contrastCurve = color.contrastCurve(scheme);
if (background && contrastCurve) {
const bgTone = background.getTone(scheme),
selfContrast = contrastCurve.get(scheme.contrastLevel);
selfTone = Contrast.ratioOfTones(bgTone, selfTone) >= selfContrast && scheme.contrastLevel >= 0 ? selfTone : DynamicColor.foregroundTone(bgTone, selfContrast);
}
}
return color.isBackground && !color.name.endsWith("_fixed_dim") && (selfTone = selfTone >= 57 ? clampDouble(65, 100, selfTone) : clampDouble(0, 49, selfTone)), selfTone;
}
{
let answer = color.tone(scheme);
if (null == color.background || void 0 === color.background(scheme) || null == color.contrastCurve || void 0 === color.contrastCurve(scheme)) return answer;
const bgTone = color.background(scheme).getTone(scheme),
desiredRatio = color.contrastCurve(scheme).get(scheme.contrastLevel);
if (answer = Contrast.ratioOfTones(bgTone, answer) >= desiredRatio && scheme.contrastLevel >= 0 ? answer : DynamicColor.foregroundTone(bgTone, desiredRatio), color.isBackground && !color.name.endsWith("_fixed_dim") && (answer = answer >= 57 ? clampDouble(65, 100, answer) : clampDouble(0, 49, answer)), null == color.secondBackground || void 0 === color.secondBackground(scheme)) return answer;
const [bg1, bg2] = [color.background, color.secondBackground],
[bgTone1, bgTone2] = [bg1(scheme).getTone(scheme), bg2(scheme).getTone(scheme)],
[upper, lower] = [Math.max(bgTone1, bgTone2), Math.min(bgTone1, bgTone2)];
if (Contrast.ratioOfTones(upper, answer) >= desiredRatio && Contrast.ratioOfTones(lower, answer) >= desiredRatio) return answer;
const lightOption = Contrast.lighter(upper, desiredRatio),
darkOption = Contrast.darker(lower, desiredRatio),
availables = [];
-1 !== lightOption && availables.push(lightOption), -1 !== darkOption && availables.push(darkOption);
return DynamicColor.tonePrefersLightForeground(bgTone1) || DynamicColor.tonePrefersLightForeground(bgTone2) ? lightOption < 0 ? 100 : lightOption : 1 === availables.length ? availables[0] : darkOption < 0 ? 0 : darkOption;
}
}
}
const spec2021$1 = new ColorCalculationDelegateImpl2021(),
spec2025$1 = new ColorCalculationDelegateImpl2025();
function getSpec$1(specVersion) {
return "2025" === specVersion ? spec2025$1 : spec2021$1;
}
class TonalPalette {
static fromInt(argb) {
const hct = Hct.fromInt(argb);
return TonalPalette.fromHct(hct);
}
static fromHct(hct) {
return new TonalPalette(hct.hue, hct.chroma, hct);
}
static fromHueAndChroma(hue, chroma) {
const keyColor = new KeyColor(hue, chroma).create();
return new TonalPalette(hue, chroma, keyColor);
}
constructor(hue, chroma, keyColor) {
this.hue = hue, this.chroma = chroma, this.keyColor = keyColor, this.cache = new Map();
}
tone(tone) {
let argb = this.cache.get(tone);
return void 0 === argb && (argb = 99 == tone && Hct.isYellow(this.hue) ? this.averageArgb(this.tone(98), this.tone(100)) : Hct.from(this.hue, this.chroma, tone).toInt(), this.cache.set(tone, argb)), argb;
}
getHct(tone) {
return Hct.fromInt(this.tone(tone));
}
averageArgb(argb1, argb2) {
const red1 = argb1 >>> 16 & 255,
green1 = argb1 >>> 8 & 255,
blue1 = 255 & argb1,
red2 = argb2 >>> 16 & 255,
green2 = argb2 >>> 8 & 255,
blue2 = 255 & argb2;
return (255 << 24 | (255 & Math.round((red1 + red2) / 2)) << 16 | (255 & Math.round((green1 + green2) / 2)) << 8 | 255 & Math.round((blue1 + blue2) / 2)) >>> 0;
}
}
class KeyColor {
constructor(hue, requestedChroma) {
this.hue = hue, this.requestedChroma = requestedChroma, this.chromaCache = new Map(), this.maxChromaValue = 200;
}
create() {
let lowerTone = 0,
upperTone = 100;
for (; lowerTone < upperTone;) {
const midTone = Math.floor((lowerTone + upperTone) / 2),
isAscending = this.maxChroma(midTone) < this.maxChroma(midTone + 1);
if (this.maxChroma(midTone) >= this.requestedChroma - .01) {
if (Math.abs(lowerTone - 50) < Math.abs(upperTone - 50)) upperTone = midTone;else {
if (lowerTone === midTone) return Hct.from(this.hue, this.requestedChroma, lowerTone);
lowerTone = midTone;
}
} else isAscending ? lowerTone = midTone + 1 : upperTone = midTone;
}
return Hct.from(this.hue, this.requestedChroma, lowerTone);
}
maxChroma(tone) {
if (this.chromaCache.has(tone)) return this.chromaCache.get(tone);
const chroma = Hct.from(this.hue, this.maxChromaValue, tone).chroma;
return this.chromaCache.set(tone, chroma), chroma;
}
}
class TemperatureCache {
constructor(input) {
this.input = input, this.hctsByTempCache = [], this.hctsByHueCache = [], this.tempsByHctCache = new Map(), this.inputRelativeTemperatureCache = -1, this.complementCache = null;
}
get hctsByTemp() {
if (this.hctsByTempCache.length > 0) return this.hctsByTempCache;
const hcts = this.hctsByHue.concat([this.input]),
temperaturesByHct = this.tempsByHct;
return hcts.sort((a, b) => temperaturesByHct.get(a) - temperaturesByHct.get(b)), this.hctsByTempCache = hcts, hcts;
}
get warmest() {
return this.hctsByTemp[this.hctsByTemp.length - 1];
}
get coldest() {
return this.hctsByTemp[0];
}
analogous(count = 5, divisions = 12) {
const startHue = Math.round(this.input.hue),
startHct = this.hctsByHue[startHue];
let lastTemp = this.relativeTemperature(startHct);
const allColors = [startHct];
let absoluteTotalTempDelta = 0;
for (let i = 0; i < 360; i++) {
const hue = sanitizeDegreesInt(startHue + i),
hct = this.hctsByHue[hue],
temp = this.relativeTemperature(hct),
tempDelta = Math.abs(temp - lastTemp);
lastTemp = temp, absoluteTotalTempDelta += tempDelta;
}
let hueAddend = 1;
const tempStep = absoluteTotalTempDelta / divisions;
let totalTempDelta = 0;
for (lastTemp = this.relativeTemperature(startHct); allColors.length < divisions;) {
const hue = sanitizeDegreesInt(startHue + hueAddend),
hct = this.hctsByHue[hue],
temp = this.relativeTemperature(hct);
totalTempDelta += Math.abs(temp - lastTemp);
let indexSatisfied = totalTempDelta >= allColors.length * tempStep,
indexAddend = 1;
for (; indexSatisfied && allColors.length < divisions;) {
allColors.push(hct);
indexSatisfied = totalTempDelta >= (allColors.length + indexAddend) * tempStep, indexAddend++;
}
if (lastTemp = temp, hueAddend++, hueAddend > 360) {
for (; allColors.length < divisions;) allColors.push(hct);
break;
}
}
const answers = [this.input],
increaseHueCount = Math.floor((count - 1) / 2);
for (let i = 1; i < increaseHueCount + 1; i++) {
let index = 0 - i;
for (; index < 0;) index = allColors.length + index;
index >= allColors.length && (index %= allColors.length), answers.splice(0, 0, allColors[index]);
}
const decreaseHueCount = count - increaseHueCount - 1;
for (let i = 1; i < decreaseHueCount + 1; i++) {
let index = i;
for (; index < 0;) index