59d46700bc
OKLCH is a perceptually uniform color space — equal lightness values produce equal perceived brightness across all hues, unlike HSL where blue at 50% looks much darker than yellow at 50%. Color scales now output oklch() CSS values directly: --gray-500: oklch(0.530 0.035 285); --accent-500: oklch(0.595 0.230 286); The browser handles gamut mapping natively. Scale definitions in tokens.edn use [label lightness chroma] tuples where L is 0-1 perceptual lightness, C is chroma (colorfulness), H is hue degrees. Theme adapter updated: sliders now control OKLCH hue/chroma, swatches render with oklch() CSS, Copy EDN outputs OKLCH config. gen.clj includes oklch->srgb and oklch->hex for validation/tools.
420 lines
18 KiB
JavaScript
420 lines
18 KiB
JavaScript
// Theme Adapter — live color scale editor for dev preview
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// Self-contained IIFE. Persists state in localStorage.
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(function() {
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'use strict';
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// ── OKLCH helpers ───────────────────────────────────────────────
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// CSS oklch() is used directly — no hex conversion needed.
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// oklch(L C H) where L: 0-1, C: 0-~0.4, H: 0-360 degrees.
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function oklchCSS(l, c, h) {
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return 'oklch(' + l.toFixed(3) + ' ' + c.toFixed(4) + ' ' + h.toFixed(1) + ')';
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}
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// OKLCH → sRGB hex for swatch preview (canvas-free fallback)
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function oklchToHex(L, C, H) {
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var hRad = H * Math.PI / 180;
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var a = C * Math.cos(hRad), b = C * Math.sin(hRad);
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var l_ = L + 0.3963377774 * a + 0.2158037573 * b;
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var m_ = L - 0.1055613458 * a - 0.0638541728 * b;
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var s_ = L - 0.0894841775 * a - 1.2914855480 * b;
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var l3 = l_*l_*l_, m3 = m_*m_*m_, s3 = s_*s_*s_;
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var rLin = 4.0767416621*l3 - 3.3077115913*m3 + 0.2309699292*s3;
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var gLin = -1.2684380046*l3 + 2.6097574011*m3 - 0.3413193965*s3;
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var bLin = -0.0041960863*l3 - 0.7034186147*m3 + 1.7076147010*s3;
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function gamma(x) { return x <= 0.0031308 ? 12.92*x : 1.055*Math.pow(Math.max(0,x),1/2.4)-0.055; }
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function clamp(x) { return Math.max(0, Math.min(255, Math.round(gamma(Math.max(0,x))*255))); }
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var r = clamp(rLin), g = clamp(gLin), bl = clamp(bLin);
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return '#' + [r,g,bl].map(function(v){ var h = v.toString(16); return h.length<2?'0'+h:h; }).join('');
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}
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// ── Scale step definitions [label, lightness, baseChroma] ──────
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// OKLCH: L is 0-1 (perceptual lightness), C is chroma (colorfulness)
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var GRAY_STEPS = [
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[50,0.975,0.003],[100,0.955,0.005],[200,0.915,0.010],[300,0.850,0.012],[400,0.690,0.025],
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[500,0.530,0.035],[600,0.425,0.035],[700,0.350,0.035],[800,0.245,0.025],[900,0.190,0.016],[950,0.145,0.011]
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];
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var ACCENT_STEPS = [
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[50,0.965,0.020],[100,0.925,0.040],[200,0.860,0.075],[300,0.770,0.125],[400,0.690,0.170],
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[500,0.595,0.230],[600,0.505,0.255],[700,0.450,0.245],[800,0.395,0.210],[900,0.350,0.175],[950,0.260,0.130]
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];
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// ── Presets ────────────────────────────────────────────────────
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// Presets use OKLCH hue (0-360) and chroma multiplier (0-2)
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var PRESETS = [
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{ name: 'Purple', grayHue: 285, graySat: 1.0, accentHue: 286, accentSat: 1.0 },
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{ name: 'Blue', grayHue: 255, graySat: 0.5, accentHue: 255, accentSat: 0.87 },
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{ name: 'Neutral', grayHue: 0, graySat: 0.0, accentHue: 255, accentSat: 0.87 },
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{ name: 'Warm', grayHue: 60, graySat: 0.7, accentHue: 50, accentSat: 0.85 },
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{ name: 'Rose', grayHue: 0, graySat: 0.5, accentHue: 350, accentSat: 0.85 },
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{ name: 'Emerald', grayHue: 165, graySat: 0.5, accentHue: 165, accentSat: 0.75 },
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];
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// ── State ──────────────────────────────────────────────────────
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var STORAGE_KEY = 'ui-fw-theme-adapter-v2';
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var DEFAULT = { grayHue: 285, graySat: 1.0, accentHue: 286, accentSat: 1.0, open: false };
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var state = assign({}, DEFAULT);
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try {
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var saved = JSON.parse(localStorage.getItem(STORAGE_KEY));
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if (saved) state = assign({}, DEFAULT, saved);
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} catch(e) {}
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function assign(target) {
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for (var i = 1; i < arguments.length; i++) {
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var src = arguments[i];
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if (src) for (var k in src) if (src.hasOwnProperty(k)) target[k] = src[k];
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}
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return target;
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}
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function save() {
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try { localStorage.setItem(STORAGE_KEY, JSON.stringify(state)); } catch(e) {}
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}
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// ── Apply colors to :root ─────────────────────────────────────
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function applyScale(name, hue, steps, chromaMul) {
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var root = document.documentElement.style;
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for (var i = 0; i < steps.length; i++) {
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var label = steps[i][0], l = steps[i][1], baseChroma = steps[i][2];
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var c = Math.min(0.4, baseChroma * chromaMul);
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root.setProperty('--' + name + '-' + label, oklchCSS(l, c, hue));
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}
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}
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function apply() {
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applyScale('gray', state.grayHue, GRAY_STEPS, state.graySat);
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applyScale('accent', state.accentHue, ACCENT_STEPS, state.accentSat);
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save();
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updateUI();
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}
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function reset() {
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state = assign({}, DEFAULT, { open: true });
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// Remove inline overrides so CSS file values take effect
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var root = document.documentElement.style;
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GRAY_STEPS.forEach(function(s) { root.removeProperty('--gray-' + s[0]); });
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ACCENT_STEPS.forEach(function(s) { root.removeProperty('--accent-' + s[0]); });
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save();
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updateUI();
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}
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// ── Generate EDN for tokens.edn ───────────────────────────────
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function generateEDN() {
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function fmtSteps(steps, chromaMul) {
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return steps.map(function(s) {
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var c = Math.min(0.4, s[2] * chromaMul);
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return ' [' + String(s[0]).padStart(3) + ' ' + s[1].toFixed(3) + ' ' + c.toFixed(3) + ']';
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}).join('\n');
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}
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var grayChroma = Math.min(0.4, 0.025 * state.graySat);
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var accentChroma = Math.min(0.4, 0.23 * state.accentSat);
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return ':color\n' +
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' {:gray {:hue ' + state.grayHue + ' :chroma ' + grayChroma.toFixed(3) + '\n' +
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' :steps [' + fmtSteps(GRAY_STEPS, state.graySat).trimStart() + ']}\n\n' +
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' :accent {:hue ' + state.accentHue + ' :chroma ' + accentChroma.toFixed(2) + '\n' +
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' :steps [' + fmtSteps(ACCENT_STEPS, state.accentSat).trimStart() + ']}}';
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}
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// ── UI ─────────────────────────────────────────────────────────
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var panel, swatchGray, swatchAccent, inputs = {};
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function el(tag, attrs, children) {
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var e = document.createElement(tag);
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if (attrs) for (var k in attrs) {
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if (k === 'style' && typeof attrs[k] === 'object') {
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for (var s in attrs[k]) e.style[s] = attrs[k][s];
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} else if (k.slice(0,2) === 'on') {
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e.addEventListener(k.slice(2), attrs[k]);
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} else {
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e.setAttribute(k, attrs[k]);
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}
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}
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if (children) {
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if (typeof children === 'string') e.textContent = children;
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else if (Array.isArray(children)) children.forEach(function(c) { if (c) e.appendChild(c); });
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}
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return e;
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}
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var S = {
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panel: {
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position: 'fixed', bottom: '16px', right: '16px', zIndex: '99999',
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fontFamily: "-apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif",
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fontSize: '12px', lineHeight: '1.4',
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},
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card: {
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background: '#1a1a26', color: '#e0e0e8', border: '1px solid #2a2a3a',
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borderRadius: '12px', width: '280px', overflow: 'hidden',
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boxShadow: '0 8px 32px rgba(0,0,0,0.4)',
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},
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header: {
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display: 'flex', alignItems: 'center', justifyContent: 'space-between',
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padding: '10px 12px', borderBottom: '1px solid #2a2a3a',
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},
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title: { fontWeight: '600', fontSize: '12px', letterSpacing: '0.02em' },
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body: { padding: '10px 12px', display: 'flex', flexDirection: 'column', gap: '10px' },
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presetRow: { display: 'flex', flexWrap: 'wrap', gap: '4px' },
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preset: {
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padding: '3px 8px', border: '1px solid #3a3a4a', borderRadius: '6px',
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background: 'transparent', color: '#b0b0c0', cursor: 'pointer',
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fontSize: '11px', fontFamily: 'inherit', transition: 'all 0.15s',
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},
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presetActive: {
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background: '#7a5afc', borderColor: '#7a5afc', color: '#fff',
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},
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section: { display: 'flex', flexDirection: 'column', gap: '6px' },
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label: { fontWeight: '500', fontSize: '11px', color: '#8a8aa0', textTransform: 'uppercase', letterSpacing: '0.05em' },
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sliderRow: { display: 'flex', alignItems: 'center', gap: '8px' },
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sliderLabel: { width: '26px', fontSize: '10px', color: '#6a6a80', flexShrink: '0' },
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sliderValue: { width: '32px', fontSize: '10px', color: '#9a9aac', textAlign: 'right', flexShrink: '0', fontFamily: "'JetBrains Mono', monospace" },
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slider: { flex: '1', height: '4px', WebkitAppearance: 'none', appearance: 'none', borderRadius: '2px', outline: 'none', cursor: 'pointer' },
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swatches: { display: 'flex', gap: '2px' },
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swatch: { flex: '1', height: '14px', borderRadius: '3px' },
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footer: { padding: '8px 12px', borderTop: '1px solid #2a2a3a', display: 'flex', gap: '6px' },
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btn: {
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flex: '1', padding: '5px 8px', border: '1px solid #3a3a4a', borderRadius: '6px',
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background: 'transparent', color: '#b0b0c0', cursor: 'pointer',
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fontSize: '11px', fontFamily: 'inherit', textAlign: 'center',
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},
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toggle: {
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width: '36px', height: '36px', borderRadius: '10px',
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background: '#1a1a26', border: '1px solid #2a2a3a', cursor: 'pointer',
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display: 'flex', alignItems: 'center', justifyContent: 'center',
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fontSize: '16px', boxShadow: '0 4px 12px rgba(0,0,0,0.3)',
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position: 'fixed', bottom: '16px', right: '16px', zIndex: '99999',
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},
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};
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function applyStyle(elem, style) {
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for (var k in style) elem.style[k] = style[k];
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}
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function hueGradient() {
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return 'linear-gradient(to right, hsl(0,80%,50%),hsl(60,80%,50%),hsl(120,80%,50%),hsl(180,80%,50%),hsl(240,80%,50%),hsl(300,80%,50%),hsl(360,80%,50%))';
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}
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function satGradient(hue) {
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return 'linear-gradient(to right, oklch(0.5 0 ' + hue + '), oklch(0.5 0.15 ' + hue + '))';
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}
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function makeSlider(id, label, min, max, step, gradient) {
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var row = el('div');
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applyStyle(row, S.sliderRow);
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var lbl = el('span', null, label);
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applyStyle(lbl, S.sliderLabel);
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var input = el('input', { type: 'range', min: String(min), max: String(max), step: String(step) });
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applyStyle(input, S.slider);
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input.style.background = gradient || '#3a3a4a';
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var val = el('span', null, '0');
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applyStyle(val, S.sliderValue);
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row.appendChild(lbl);
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row.appendChild(input);
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row.appendChild(val);
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inputs[id] = { input: input, value: val };
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return row;
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}
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function makeSwatches() {
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var row = el('div');
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applyStyle(row, S.swatches);
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var items = [];
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for (var i = 0; i < 11; i++) {
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var sw = el('div');
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applyStyle(sw, S.swatch);
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row.appendChild(sw);
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items.push(sw);
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}
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return { row: row, items: items };
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}
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function buildPanel() {
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// Toggle button (shown when panel is closed)
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var toggle = el('button', { onclick: function() { state.open = true; save(); updateUI(); } }, '\u{1F3A8}');
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applyStyle(toggle, S.toggle);
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// Panel
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panel = el('div');
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applyStyle(panel, S.panel);
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var card = el('div');
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applyStyle(card, S.card);
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// Header
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var header = el('div');
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applyStyle(header, S.header);
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var title = el('span', null, 'Theme');
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applyStyle(title, S.title);
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var closeBtn = el('button', { onclick: function() { state.open = false; save(); updateUI(); } }, '\u00d7');
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applyStyle(closeBtn, { background: 'none', border: 'none', color: '#6a6a80', cursor: 'pointer', fontSize: '16px', padding: '0 2px', fontFamily: 'inherit' });
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var resetBtn = el('button', { onclick: reset }, 'Reset');
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applyStyle(resetBtn, { background: 'none', border: '1px solid #3a3a4a', color: '#6a6a80', cursor: 'pointer', fontSize: '10px', padding: '2px 6px', borderRadius: '4px', fontFamily: 'inherit', marginLeft: 'auto', marginRight: '8px' });
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header.appendChild(title);
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header.appendChild(resetBtn);
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header.appendChild(closeBtn);
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// Body
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var body = el('div');
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applyStyle(body, S.body);
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// Presets
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var presetRow = el('div');
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applyStyle(presetRow, S.presetRow);
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PRESETS.forEach(function(p) {
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var btn = el('button', { onclick: function() {
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state.grayHue = p.grayHue;
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state.graySat = p.graySat;
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state.accentHue = p.accentHue;
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state.accentSat = p.accentSat;
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apply();
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}}, p.name);
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applyStyle(btn, S.preset);
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// Small color dot
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var dot = el('span');
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dot.style.cssText = 'display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:4px;vertical-align:middle;';
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dot.style.background = oklchToHex(0.595, 0.23 * p.accentSat, p.accentHue);
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btn.insertBefore(dot, btn.firstChild);
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presetRow.appendChild(btn);
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});
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// Gray section
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var graySection = el('div');
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applyStyle(graySection, S.section);
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var grayLabel = el('div', null, 'Gray');
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applyStyle(grayLabel, S.label);
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graySection.appendChild(grayLabel);
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graySection.appendChild(makeSlider('grayHue', 'Hue', 0, 360, 1, hueGradient()));
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graySection.appendChild(makeSlider('graySat', 'Chr', 0, 200, 1));
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var graySwatches = makeSwatches();
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swatchGray = graySwatches.items;
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graySection.appendChild(graySwatches.row);
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// Accent section
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var accentSection = el('div');
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applyStyle(accentSection, S.section);
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var accentLabel = el('div', null, 'Accent');
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applyStyle(accentLabel, S.label);
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accentSection.appendChild(accentLabel);
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accentSection.appendChild(makeSlider('accentHue', 'Hue', 0, 360, 1, hueGradient()));
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accentSection.appendChild(makeSlider('accentSat', 'Chr', 0, 200, 1));
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var accentSwatches = makeSwatches();
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swatchAccent = accentSwatches.items;
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accentSection.appendChild(accentSwatches.row);
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body.appendChild(presetRow);
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body.appendChild(graySection);
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body.appendChild(accentSection);
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// Footer
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var footer = el('div');
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applyStyle(footer, S.footer);
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var copyBtn = el('button', { onclick: function() {
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var edn = generateEDN();
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navigator.clipboard.writeText(edn).then(function() {
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copyBtn.textContent = 'Copied!';
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setTimeout(function() { copyBtn.textContent = 'Copy EDN'; }, 1500);
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});
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}}, 'Copy EDN');
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applyStyle(copyBtn, S.btn);
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footer.appendChild(copyBtn);
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card.appendChild(header);
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card.appendChild(body);
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card.appendChild(footer);
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panel.appendChild(card);
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document.body.appendChild(toggle);
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document.body.appendChild(panel);
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// Slider events
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inputs.grayHue.input.addEventListener('input', function(e) {
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state.grayHue = parseInt(e.target.value); apply();
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});
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inputs.graySat.input.addEventListener('input', function(e) {
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state.graySat = parseInt(e.target.value) / 100; apply();
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});
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inputs.accentHue.input.addEventListener('input', function(e) {
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state.accentHue = parseInt(e.target.value); apply();
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});
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inputs.accentSat.input.addEventListener('input', function(e) {
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state.accentSat = parseInt(e.target.value) / 100; apply();
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});
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// Style range inputs (webkit + moz)
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var css = document.createElement('style');
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css.textContent = [
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'#ta-root input[type=range]::-webkit-slider-thumb {',
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' -webkit-appearance: none; width: 14px; height: 14px;',
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' border-radius: 50%; background: #fff; border: 2px solid #7a5afc;',
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' cursor: pointer; margin-top: -5px; box-shadow: 0 1px 4px rgba(0,0,0,0.3);',
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'}',
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'#ta-root input[type=range]::-moz-range-thumb {',
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' width: 14px; height: 14px; border-radius: 50%;',
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' background: #fff; border: 2px solid #7a5afc; cursor: pointer;',
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' box-shadow: 0 1px 4px rgba(0,0,0,0.3);',
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'}',
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'#ta-root input[type=range]::-webkit-slider-runnable-track {',
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' height: 4px; border-radius: 2px;',
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'}',
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'#ta-root input[type=range]::-moz-range-track {',
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' height: 4px; border-radius: 2px;',
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'}',
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].join('\n');
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document.head.appendChild(css);
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panel.id = 'ta-root';
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toggle.id = 'ta-toggle';
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// Reference for toggle visibility
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panel._toggle = toggle;
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}
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function updateUI() {
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if (!panel) return;
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// Show/hide
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panel.style.display = state.open ? 'block' : 'none';
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panel._toggle.style.display = state.open ? 'none' : 'flex';
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// Sync slider values
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inputs.grayHue.input.value = state.grayHue;
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inputs.grayHue.value.textContent = state.grayHue + '\u00b0';
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inputs.graySat.input.value = Math.round(state.graySat * 100);
|
|
inputs.graySat.value.textContent = Math.round(state.graySat * 100) + '%';
|
|
inputs.graySat.input.style.background = satGradient(state.grayHue);
|
|
inputs.accentHue.input.value = state.accentHue;
|
|
inputs.accentHue.value.textContent = state.accentHue + '\u00b0';
|
|
inputs.accentSat.input.value = Math.round(state.accentSat * 100);
|
|
inputs.accentSat.value.textContent = Math.round(state.accentSat * 100) + '%';
|
|
inputs.accentSat.input.style.background = satGradient(state.accentHue);
|
|
|
|
// Swatches — use oklch() CSS for accurate preview
|
|
if (swatchGray) {
|
|
GRAY_STEPS.forEach(function(s, i) {
|
|
var c = Math.min(0.4, s[2] * state.graySat);
|
|
swatchGray[i].style.background = oklchCSS(s[1], c, state.grayHue);
|
|
});
|
|
}
|
|
if (swatchAccent) {
|
|
ACCENT_STEPS.forEach(function(s, i) {
|
|
var c = Math.min(0.4, s[2] * state.accentSat);
|
|
swatchAccent[i].style.background = oklchCSS(s[1], c, state.accentHue);
|
|
});
|
|
}
|
|
}
|
|
|
|
// ── Init ───────────────────────────────────────────────────────
|
|
if (document.readyState === 'loading') {
|
|
document.addEventListener('DOMContentLoaded', init);
|
|
} else {
|
|
init();
|
|
}
|
|
|
|
function init() {
|
|
buildPanel();
|
|
// Apply saved non-default state
|
|
if (state.grayHue !== DEFAULT.grayHue || state.graySat !== DEFAULT.graySat ||
|
|
state.accentHue !== DEFAULT.accentHue || state.accentSat !== DEFAULT.accentSat) {
|
|
apply();
|
|
} else {
|
|
updateUI();
|
|
}
|
|
}
|
|
})();
|