mirror of
https://github.com/pbakaus/impeccable.git
synced 2026-09-15 15:46:30 +03:00
909 lines
34 KiB
JavaScript
909 lines
34 KiB
JavaScript
import { contrastInk, formatOklch, hexToOklch, oklchToHex, seedToRoles } from './color.js';
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const ROLES = ['primary', 'secondary', 'tertiary', 'neutral'];
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const screen = document.querySelector('[data-screen="02"]');
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const $ = (selector, root = screen) => root.querySelector(selector);
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const $$ = (selector, root = screen) => root.querySelectorAll(selector);
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const scroller = $('[data-deck-scroll]');
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const points = $('[data-deck-points]');
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const layer = $('[data-deck-cards]');
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const count = $('[data-deck-count]');
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const panel = $('.picker-palette-panel');
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const hint = $('[data-palette-hint]');
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const ringGuide = $('[data-ring-guide]');
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const loupe = $('[data-loupe]');
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const preview = $('.picker-preview');
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const strategyPreview = document.querySelector('[data-strategy-preview]');
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const typePreview = document.querySelector('[data-type-preview]');
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const fontOptions = document.querySelector('[data-font-options]');
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const pairTemplate = document.querySelector('[data-pair-card]');
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const scaleOptions = document.querySelector('[data-scale-options]');
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const scaleSheet = document.querySelector('[data-scale-sheet]');
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const states = new Map();
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const canvases = new WeakMap();
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let cards = [];
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let current = 0;
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let openTint;
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let fontManifest;
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/* Headlines and labels come from the product so the display face is judged on
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words it will really set. Running text stays lorem on purpose: a body face
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is judged on texture, and real prose pulls the eye into reading it. */
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const LOREM = {
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sentence: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore.',
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lines: ['Ut enim ad minim veniam, quis nostrud exercitation', 'ullamco laboris nisi ut aliquip ex ea commodo.'],
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};
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/* The desktop artboard sets three cards and the phone two, so a fourth would
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be words the agent writes and nobody ever reads. */
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const GALLERY_CARDS = 3;
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const FALLBACK_FONTS = {
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version: 1,
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specimen: {
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headline: 'Built for the work at hand',
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},
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preview: {
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brand: 'Ab',
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nav: ['Product', 'Pricing', 'Docs', 'About'],
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navAction: 'Sign in',
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menuAction: 'Menu',
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ctaPrimary: 'Get started',
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ctaSecondary: 'Learn more',
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proof: ['Fast to set up', 'Works anywhere', 'No lock-in', 'Free to try'],
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sectionTitle: 'Everything in one place',
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sectionLink: 'Read the guide',
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gallery: [
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{ title: 'Overview', meta: 'Start here' },
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{ title: 'Library', meta: 'Browse all' },
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{ title: 'Reports', meta: 'See results' },
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],
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footerLinks: ['Product', 'Company', 'Support', 'Legal'],
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footerMark: '© Your product',
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},
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pairs: [
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{
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id: 'source-editorial',
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name: 'Source editorial',
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heading: { family: 'Source Serif 4', weight: 600 },
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body: { family: 'Source Sans 3', weight: 400 },
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why: 'Considered and editorial',
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},
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{
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id: 'literary-clarity',
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name: 'Literary clarity',
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heading: { family: 'Libre Baskerville', weight: 700 },
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body: { family: 'Libre Franklin', weight: 400 },
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why: 'Bookish and plain-spoken',
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},
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{
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id: 'warm-structure',
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name: 'Warm structure',
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heading: { family: 'Bitter', weight: 600 },
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body: { family: 'Cabin', weight: 400 },
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why: 'Sturdy slab warmth',
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},
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{
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id: 'bold-utility',
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name: 'Bold utility',
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heading: { family: 'Archivo Black', weight: 400 },
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body: { family: 'Archivo', weight: 400 },
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why: 'Headlines that shout',
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},
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{
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id: 'technical-signal',
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name: 'Technical signal',
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heading: { family: 'Azeret Mono', weight: 600 },
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body: { family: 'Noto Sans', weight: 400 },
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why: 'Machined and precise',
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},
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{
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id: 'classical-poise',
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name: 'Classical poise',
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heading: { family: 'Marcellus', weight: 400 },
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body: { family: 'Karla', weight: 400 },
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why: 'Inscriptional and formal',
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},
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],
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};
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const roleMap = (value) => Object.fromEntries(ROLES.map((role) => [role, value(role)]));
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const card = () => cards[current];
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const state = () => states.get(card().id);
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const dismissRingGuide = () => ringGuide.setAttribute('aria-hidden', 'true');
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const serifFamily = /serif|mincho|baskerville|bitter|marcellus|slab|antiqua|garamond|didot|bodoni/i;
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const fontStack = (family) => `"${family.replaceAll('"', '\\"')}", ${serifFamily.test(family) ? 'serif' : 'sans-serif'}`;
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function createState(item) {
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const colors = item.type === 'cue'
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? roleMap((role) => (item.palette[role].snapped || item.palette[role].hex).toUpperCase())
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: seedToRoles(item);
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return {
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colors,
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detached: roleMap(() => false),
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rings: roleMap(() => [50, 50]),
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};
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}
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function sourceCanvas(image) {
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let canvas = canvases.get(image);
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if (canvas) return canvas;
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canvas = document.createElement('canvas');
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canvas.width = image.naturalWidth;
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canvas.height = image.naturalHeight;
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canvas.getContext('2d', { willReadFrequently: true }).drawImage(image, 0, 0);
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canvases.set(image, canvas);
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return canvas;
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}
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function syncRings(item) {
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if (item.type !== 'cue') return;
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const itemState = states.get(item.id);
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$$('.picker-ring', item.node).forEach((ring) => {
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const role = ring.dataset.role;
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const [x, y] = itemState.rings[role];
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ring.style.setProperty('--x', `${x}%`);
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ring.style.setProperty('--y', `${y}%`);
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ring.style.setProperty('--marker-color', itemState.colors[role]);
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ring.setAttribute('aria-valuetext', itemState.colors[role]);
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ring.toggleAttribute('data-detached', itemState.detached[role]);
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});
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}
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function drawLoupe(ring, item, image) {
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const [x, y] = states.get(item.id).rings[ring.dataset.role];
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const source = sourceCanvas(image);
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const canvas = $('canvas', loupe);
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const context = canvas.getContext('2d');
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const px = x / 100 * (source.width - 1);
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const py = y / 100 * (source.height - 1);
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const crop = Math.max(8, Math.min(source.width, source.height) / 128);
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context.clearRect(0, 0, 80, 80);
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context.imageSmoothingEnabled = false;
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context.drawImage(source, px - crop / 2, py - crop / 2, crop, crop, 0, 0, 80, 80);
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const stage = loupe.parentElement.getBoundingClientRect();
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const box = ring.getBoundingClientRect();
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loupe.style.left = `${box.left - stage.left + box.width / 2}px`;
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loupe.style.top = `${box.top - stage.top}px`;
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loupe.dataset.visible = '';
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}
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function renderBand(role) {
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const hex = state().colors[role];
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const band = $(`[data-band="${role}"]`, panel);
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band.style.setProperty('--band-color', hex);
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band.style.setProperty('--band-ink', contrastInk(hex));
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$('output', band).textContent = hex;
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$('input', band).value = hex;
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renderPreview();
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}
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function renderPreview() {
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for (const role of ROLES) preview.style.setProperty(`--pv-${role}`, state().colors[role]);
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preview.style.setProperty('--pv-n-ink', contrastInk(state().colors.neutral));
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}
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function syncCommittedPalette(target) {
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const committed = roleMap((role) => $(`[name="palette-${role}"]`).value);
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if (!target || Object.values(committed).some((hex) => !hex)) return;
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for (const role of ROLES) target.style.setProperty(`--pv-${role}`, committed[role]);
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target.style.setProperty('--pv-n-ink', contrastInk(committed.neutral));
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target.style.setProperty('--pv-p-ink', contrastInk(committed.primary));
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}
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/* Every field is checked only when it is present. The manifest merges over
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FALLBACK_FONTS, so a partial file is legal by design: the spec asks for the
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full set on the shared block, and a per-pair override is allowed to carry
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the one string it changes. Demanding the full shape anywhere it appears
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would reject that override and drop the whole manifest, six chosen pairs
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included, back to defaults. */
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function isPreviewCopy(value) {
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if (!value || typeof value !== 'object') return false;
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const strings = ['brand', 'navAction', 'menuAction', 'ctaPrimary', 'ctaSecondary', 'sectionTitle', 'sectionLink', 'footerMark'];
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const lists = { nav: 4, proof: 4, footerLinks: 4 };
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return strings.every((key) => value[key] === undefined || typeof value[key] === 'string')
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&& Object.entries(lists).every(([key, length]) => value[key] === undefined || (
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Array.isArray(value[key])
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&& value[key].length === length
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&& value[key].every((entry) => typeof entry === 'string')
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))
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&& (value.gallery === undefined || (
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Array.isArray(value.gallery)
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&& value.gallery.length === GALLERY_CARDS
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&& value.gallery.every((entry) => (
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typeof entry?.title === 'string'
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&& typeof entry?.meta === 'string'
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))
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));
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}
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function normalizeFontManifest(manifest) {
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return {
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...manifest,
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preview: { ...FALLBACK_FONTS.preview, ...manifest.preview },
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};
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}
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function isFontManifest(value) {
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return value?.version === 1
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&& typeof value.specimen?.headline === 'string'
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&& (!value.preview || isPreviewCopy(value.preview))
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&& value.pairs?.length === 6
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&& value.pairs.every((pair) => (
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typeof pair.id === 'string'
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&& typeof pair.name === 'string'
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&& typeof pair.heading?.family === 'string'
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&& Number.isFinite(pair.heading?.weight)
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&& typeof pair.body?.family === 'string'
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&& Number.isFinite(pair.body?.weight)
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&& typeof pair.why === 'string'
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&& (!pair.preview || isPreviewCopy(pair.preview))
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));
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}
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function loadFontStylesheet(pairs) {
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const families = new Map();
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const addWeight = (family, weight) => {
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if (!families.has(family)) families.set(family, new Set());
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families.get(family).add(weight);
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};
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for (const pair of pairs) {
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addWeight(pair.heading.family, pair.heading.weight);
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addWeight(pair.body.family, pair.body.weight);
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addWeight(pair.body.family, 700);
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}
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const query = [...families].map(([family, weights]) => {
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const name = encodeURIComponent(family).replaceAll('%20', '+');
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return `family=${name}:wght@${[...weights].sort((a, b) => a - b).join(';')}`;
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}).join('&');
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const link = document.createElement('link');
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link.rel = 'stylesheet';
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link.href = `https://fonts.googleapis.com/css2?${query}&display=swap`;
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link.dataset.pickerFonts = '';
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document.head.append(link);
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}
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function fillIndexed(root, selector, values) {
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if (!root) return;
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root.querySelectorAll(selector).forEach((node, index) => {
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node.textContent = values[index] ?? '';
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});
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}
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function fillGallery(root, gallery) {
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if (!root) return;
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root.querySelectorAll('.ps-gallery-item').forEach((item, index) => {
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const title = item.querySelector('[data-type-gallery-title]');
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const meta = item.querySelector('[data-type-gallery-meta]');
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if (title) title.textContent = gallery[index]?.title ?? '';
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if (meta) meta.textContent = gallery[index]?.meta ?? '';
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});
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}
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function syncFontPair(pair) {
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const manifest = fontManifest;
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const preview = {
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...FALLBACK_FONTS.preview,
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...manifest.preview,
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...pair.preview,
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};
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const specimen = { ...manifest.specimen, ...pair.specimen };
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const desktop = typePreview.querySelector('.ps-desktop');
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const phoneBody = typePreview.querySelector('.ps-phone-body');
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const phoneFooter = typePreview.querySelector('.ps-phone-footer');
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// The scale sheet is set in the pair chosen here, so it travels with it.
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for (const target of [typePreview, scaleSheet]) {
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target.style.setProperty('--pt-heading', fontStack(pair.heading.family));
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target.style.setProperty('--pt-body', fontStack(pair.body.family));
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target.style.setProperty('--pt-heading-weight', pair.heading.weight);
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}
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for (const node of document.querySelectorAll('[data-type-brand]')) node.textContent = preview.brand;
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fillIndexed(desktop, '[data-type-nav]', preview.nav);
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for (const node of document.querySelectorAll('[data-type-nav-action]')) node.textContent = preview.navAction;
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for (const node of document.querySelectorAll('[data-type-menu-action]')) node.textContent = preview.menuAction;
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for (const node of document.querySelectorAll('[data-type-headline]')) node.textContent = specimen.headline;
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for (const node of document.querySelectorAll('[data-type-body]')) node.textContent = LOREM.sentence;
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document.querySelectorAll('[data-type-cta-primary]').forEach((node) => {
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node.textContent = preview.ctaPrimary;
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});
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document.querySelectorAll('[data-type-cta-secondary]').forEach((node) => {
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node.textContent = preview.ctaSecondary;
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});
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fillIndexed(desktop, '[data-type-proof]', preview.proof);
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fillIndexed(phoneBody, '[data-type-proof]', preview.proof);
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document.querySelectorAll('[data-type-section-title]').forEach((node) => {
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node.textContent = preview.sectionTitle;
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});
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fillIndexed(desktop, '[data-type-section-body]', LOREM.lines);
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fillIndexed(phoneBody, '[data-type-section-body]', LOREM.lines);
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document.querySelectorAll('[data-type-section-link]').forEach((node) => {
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node.textContent = preview.sectionLink;
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});
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fillGallery(desktop, preview.gallery);
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fillGallery(phoneBody, preview.gallery);
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fillIndexed(desktop.querySelector('.ps-footer'), '[data-type-footer-link]', preview.footerLinks);
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fillIndexed(phoneFooter, '[data-type-footer-link]', preview.footerLinks);
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document.querySelectorAll('[data-type-footer-mark]').forEach((node) => {
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node.textContent = preview.footerMark;
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});
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document.querySelector('[name="font-heading"]').value = pair.heading.family;
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document.querySelector('[name="font-body"]').value = pair.body.family;
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document.querySelector('[name="font-heading-source"]').value = pair.heading.source || '';
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document.querySelector('[name="font-body-source"]').value = pair.body.source || '';
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}
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function addPairCard(pair, { checked = false, prepend = false } = {}) {
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const node = pairTemplate.content.firstElementChild.cloneNode(true);
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const input = node.querySelector('input');
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input.value = pair.id;
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input.checked = checked;
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input.setAttribute('aria-label', `${pair.heading.family} with ${pair.body.family}`);
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node.style.setProperty('--pair-heading', fontStack(pair.heading.family));
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node.style.setProperty('--pair-body', fontStack(pair.body.family));
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node.style.setProperty('--pair-heading-weight', pair.heading.weight);
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node.style.setProperty('--pair-body-weight', pair.body.weight);
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node.querySelector('[data-pair-heading]').textContent = pair.heading.family;
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node.querySelector('[data-pair-body]').textContent = pair.body.family;
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node.querySelector('[data-pair-why]').textContent = pair.why;
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if (prepend) fontOptions.prepend(node);
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else fontOptions.append(node);
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return node;
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}
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function renderFontPairs(manifest, fallback) {
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fontManifest = normalizeFontManifest(manifest);
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fontOptions.toggleAttribute('data-fallback', fallback);
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manifest.pairs.forEach((pair, index) => addPairCard(pair, { checked: index === 0 }));
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loadFontStylesheet(manifest.pairs);
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syncFontPair(manifest.pairs[0]);
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}
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fontOptions.onchange = ({ target }) => {
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if (!target.matches('input[name="font-pair"]')) return;
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const pair = fontManifest.pairs.find(({ id }) => id === target.value);
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if (pair) syncFontPair(pair);
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};
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/* Scroll by whole rows so an option never ends up half in frame, and disable
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an arrow at the end it points to, since a live arrow that does nothing is
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the reason the list looked unscrollable in the first place. */
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function wireListScroll(list) {
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const buttons = [...list.closest('.picker-type-rail').querySelectorAll('[data-list-scroll]')];
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const sync = () => {
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const room = list.scrollHeight - list.clientHeight;
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for (const button of buttons) {
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const down = button.dataset.listScroll === '1';
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const spent = down ? list.scrollTop >= room - 1 : list.scrollTop <= 1;
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button.disabled = room < 2 || spent;
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}
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};
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for (const button of buttons) {
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button.onclick = () => {
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const step = list.querySelector('.picker-strategy-option')?.offsetHeight || 100;
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list.scrollBy({ top: step * Number(button.dataset.listScroll), behavior: 'smooth' });
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};
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}
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list.addEventListener('scroll', sync, { passive: true });
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new ResizeObserver(sync).observe(list);
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return sync;
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}
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const syncScrollButtons = wireListScroll(fontOptions);
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wireListScroll(scaleOptions);
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/* Type scale.
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The numbers are the real ones: step n is 16px * ratio^n, and a Golden Ratio
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H1 really is 287px. The specimen cannot be, because 287px of "This is the
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Golden Ratio scale" is eight times the width of the sheet, and a sheet fitted
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to that H1 would set its paragraph at 2px.
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So the rendering compresses the exponent by half, which keeps every scale in
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its own character (a Minor Second sheet still reads as nearly flat, a Golden
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Ratio one as dramatic) while bringing the range from 18x down to about 4x.
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The measured fit below then scales the whole sheet if even that overflows.
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The quoted px and rem stay untouched, which is the point of showing them. */
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const SCALE_BASE = 16;
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const SCALE_BODY_PX = 13;
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const SCALE_COMPRESSION = 0.5;
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const scaleRows = [...scaleSheet.querySelectorAll('[data-scale-row]')];
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const scaleRatioInput = document.querySelector('[name="type-scale-ratio"]');
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const trimZeros = (value) => value.replace(/\.0+$/, '').replace(/(\.\d*[1-9])0+$/, '$1');
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/* One pass is exact: every size is linear in the fit factor, and the row boxes
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the text has to fit inside do not move when it changes. */
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function fitScaleSheet() {
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scaleSheet.style.setProperty('--ts-fit', '1');
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if (!scaleSheet.clientHeight) return;
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let over = 1;
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for (const row of scaleRows) {
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const sample = row.querySelector('[data-scale-sample]');
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over = Math.max(
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over,
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sample.scrollWidth / Math.max(sample.clientWidth, 1),
|
||
sample.scrollHeight / Math.max(row.clientHeight, 1),
|
||
);
|
||
}
|
||
if (over > 1.001) scaleSheet.style.setProperty('--ts-fit', (1 / over).toFixed(4));
|
||
}
|
||
|
||
function syncTypeScale(input) {
|
||
const ratio = Number(input.dataset.ratio);
|
||
const name = input.dataset.scaleName;
|
||
for (const row of scaleRows) {
|
||
const step = Number(row.dataset.scaleRow);
|
||
const px = SCALE_BASE * ratio ** step;
|
||
row.style.setProperty('--ts-size', (SCALE_BODY_PX * ratio ** (step * SCALE_COMPRESSION)).toFixed(3));
|
||
row.querySelector('[data-scale-sample]').textContent = `This is the ${name} scale`;
|
||
row.querySelector('[data-scale-px]').textContent = `${Math.round(px)}px`;
|
||
row.querySelector('[data-scale-rem]').textContent = `${trimZeros((px / SCALE_BASE).toFixed(2))}rem`;
|
||
}
|
||
scaleRatioInput.value = ratio.toFixed(3);
|
||
fitScaleSheet();
|
||
}
|
||
|
||
scaleOptions.onchange = ({ target }) => {
|
||
if (target.matches('input[name="type-scale"]')) syncTypeScale(target);
|
||
};
|
||
|
||
new ResizeObserver(fitScaleSheet).observe(scaleSheet);
|
||
// Every face swap changes the width of the same string, fit included.
|
||
document.fonts?.addEventListener('loadingdone', fitScaleSheet);
|
||
syncTypeScale(scaleOptions.querySelector('input:checked'));
|
||
|
||
/* Custom fonts. A URL is carried through as-is; an uploaded face is handed to
|
||
the server, which stores the bytes and returns the path the answers record.
|
||
Neither is parsed here: the questionnaire validates at the end. */
|
||
const fontModal = document.querySelector('[data-font-modal]');
|
||
const customStatus = fontModal.querySelector('[data-custom-status]');
|
||
const customFile = (role) => fontModal.querySelector(`[data-custom-file="${role}"]`);
|
||
const customUrl = (role) => fontModal.querySelector(`[data-custom-url="${role}"]`);
|
||
const FONT_SOURCE_SEP = '\n';
|
||
const FONT_FILE_EXTENSIONS = new Set(['.woff2', '.woff', '.ttf', '.otf']);
|
||
const customFilesByRole = { heading: [], body: [] };
|
||
|
||
function fontFileExtension(name) {
|
||
const index = name.lastIndexOf('.');
|
||
return index === -1 ? '' : name.slice(index).toLowerCase();
|
||
}
|
||
|
||
function isFontFile(file) {
|
||
return FONT_FILE_EXTENSIONS.has(fontFileExtension(file.name));
|
||
}
|
||
|
||
function setChosenFontFiles(input, files) {
|
||
const transfer = new DataTransfer();
|
||
for (const file of files) transfer.items.add(file);
|
||
input.files = transfer.files;
|
||
}
|
||
|
||
function sameFontFile(a, b) {
|
||
return a.name === b.name && a.size === b.size && a.lastModified === b.lastModified;
|
||
}
|
||
|
||
function mergeFontFiles(existing, incoming) {
|
||
const merged = [...existing];
|
||
for (const file of incoming) {
|
||
if (!merged.some((entry) => sameFontFile(entry, file))) merged.push(file);
|
||
}
|
||
return merged;
|
||
}
|
||
|
||
function renderCustomFileList(role) {
|
||
const list = fontModal.querySelector(`[data-custom-file-list="${role}"]`);
|
||
const files = customFilesByRole[role];
|
||
list.replaceChildren();
|
||
list.hidden = files.length === 0;
|
||
for (const file of files) {
|
||
const item = document.createElement('li');
|
||
item.className = 'picker-modal-file-item';
|
||
const name = document.createElement('span');
|
||
name.textContent = file.name;
|
||
const remove = document.createElement('button');
|
||
remove.type = 'button';
|
||
remove.className = 'picker-modal-file-remove';
|
||
remove.setAttribute('aria-label', `Remove ${file.name}`);
|
||
remove.textContent = '×';
|
||
remove.onclick = () => {
|
||
customFilesByRole[role] = customFilesByRole[role].filter((entry) => !sameFontFile(entry, file));
|
||
setChosenFontFiles(customFile(role), customFilesByRole[role]);
|
||
renderCustomFileList(role);
|
||
customStatus.textContent = '';
|
||
};
|
||
item.append(name, remove);
|
||
list.append(item);
|
||
}
|
||
}
|
||
|
||
function parseFontSources(source) {
|
||
if (!source) return [];
|
||
if (source.includes(FONT_SOURCE_SEP)) return source.split(FONT_SOURCE_SEP).filter(Boolean);
|
||
return [source];
|
||
}
|
||
|
||
document.querySelector('[data-font-custom-open]').onclick = () => {
|
||
customStatus.textContent = '';
|
||
for (const role of ['heading', 'body']) {
|
||
customFilesByRole[role] = [];
|
||
customFile(role).value = '';
|
||
setChosenFontFiles(customFile(role), []);
|
||
renderCustomFileList(role);
|
||
}
|
||
fontModal.showModal();
|
||
};
|
||
|
||
document.querySelector('[data-font-custom-close]').onclick = () => fontModal.close();
|
||
|
||
for (const role of ['heading', 'body']) {
|
||
customFile(role).onchange = ({ target }) => {
|
||
const incoming = [...target.files].filter(isFontFile);
|
||
if (incoming.length !== target.files.length) {
|
||
customStatus.textContent = 'Only .woff2, .woff, .ttf, and .otf files are accepted.';
|
||
} else {
|
||
customStatus.textContent = '';
|
||
}
|
||
customFilesByRole[role] = mergeFontFiles(customFilesByRole[role], incoming);
|
||
setChosenFontFiles(target, customFilesByRole[role]);
|
||
target.value = '';
|
||
renderCustomFileList(role);
|
||
};
|
||
}
|
||
|
||
async function uploadFontFile(file) {
|
||
const response = await fetch('/font-upload', {
|
||
method: 'POST',
|
||
headers: { 'X-Font-Filename': file.name, 'Content-Type': 'application/octet-stream' },
|
||
body: file,
|
||
});
|
||
const result = await response.json();
|
||
if (!response.ok) throw new Error(result.error || 'Upload failed');
|
||
return result.path;
|
||
}
|
||
|
||
async function resolveCustomFace(role) {
|
||
const files = customFilesByRole[role].filter(isFontFile);
|
||
if (files.length) {
|
||
const paths = await Promise.all(files.map((file) => uploadFontFile(file)));
|
||
return {
|
||
family: files[0].name.replace(/\.[^.]+$/, ''),
|
||
source: paths.join(FONT_SOURCE_SEP),
|
||
};
|
||
}
|
||
const url = customUrl(role).value.trim();
|
||
return url ? { family: url.split('/').pop().replace(/\.[^.]+$/, '') || 'Custom', source: url } : null;
|
||
}
|
||
|
||
document.querySelector('[data-font-custom-save]').onclick = async () => {
|
||
customStatus.textContent = 'Saving…';
|
||
let heading;
|
||
let body;
|
||
try {
|
||
[heading, body] = await Promise.all([resolveCustomFace('heading'), resolveCustomFace('body')]);
|
||
} catch (error) {
|
||
customStatus.textContent = error.message;
|
||
return;
|
||
}
|
||
if (!heading && !body) {
|
||
customStatus.textContent = 'Add a URL or a file for at least one role.';
|
||
return;
|
||
}
|
||
const current = fontManifest.pairs.find(({ id }) => id === fontOptions.querySelector('input:checked')?.value);
|
||
const pair = {
|
||
id: 'custom',
|
||
name: 'Custom',
|
||
heading: heading || current.heading,
|
||
body: body || current.body,
|
||
why: 'Your own faces',
|
||
};
|
||
fontManifest.pairs = [pair, ...fontManifest.pairs.filter(({ id }) => id !== 'custom')];
|
||
addPairCard(pair, { prepend: true });
|
||
loadCustomFace(pair);
|
||
fontOptions.querySelector('input[value="custom"]').checked = true;
|
||
syncFontPair(pair);
|
||
fontOptions.scrollTo({ top: 0 });
|
||
fontModal.close();
|
||
};
|
||
|
||
// A hosted stylesheet is linked; an uploaded file is registered as a face so
|
||
// the specimen and the artboards can render it immediately.
|
||
function loadCustomFace({ heading, body }) {
|
||
for (const face of [heading, body]) {
|
||
if (!face?.source) continue;
|
||
if (/\.(css)(\?|$)/i.test(face.source) || (!face.source.includes(FONT_SOURCE_SEP) && !/\.(woff2?|ttf|otf)(\?|$)/i.test(face.source))) {
|
||
const link = document.createElement('link');
|
||
link.rel = 'stylesheet';
|
||
link.href = face.source;
|
||
document.head.append(link);
|
||
continue;
|
||
}
|
||
for (const entry of parseFontSources(face.source)) {
|
||
const src = entry.startsWith('http') ? entry : `/fonts/${entry.split('/').pop()}`;
|
||
document.fonts.add(new FontFace(face.family, `url(${src})`));
|
||
}
|
||
document.fonts.load(`16px "${face.family}"`);
|
||
}
|
||
}
|
||
|
||
function setActiveRole(role) {
|
||
if (hint.textContent === hint.dataset[role]) return;
|
||
hint.classList.add('is-changing');
|
||
setTimeout(() => {
|
||
hint.textContent = hint.dataset[role];
|
||
hint.classList.remove('is-changing');
|
||
}, 90);
|
||
}
|
||
|
||
function setColor(role, hex, detached = true) {
|
||
const itemState = state();
|
||
itemState.colors[role] = hex.toUpperCase();
|
||
itemState.detached[role] = detached;
|
||
renderBand(role);
|
||
syncRings(card());
|
||
setActiveRole(role);
|
||
}
|
||
|
||
function sample(ring, item, image, x, y) {
|
||
const saved = states.get(item.id);
|
||
const source = sourceCanvas(image);
|
||
const role = ring.dataset.role;
|
||
x = Math.min(100, Math.max(0, x));
|
||
y = Math.min(100, Math.max(0, y));
|
||
const pixel = source.getContext('2d').getImageData(
|
||
Math.round(x / 100 * (source.width - 1)),
|
||
Math.round(y / 100 * (source.height - 1)),
|
||
1,
|
||
1,
|
||
).data;
|
||
const hex = `#${[pixel[0], pixel[1], pixel[2]].map((value) => value.toString(16).padStart(2, '0')).join('').toUpperCase()}`;
|
||
saved.rings[role] = [x, y];
|
||
saved.colors[role] = hex;
|
||
saved.detached[role] = false;
|
||
syncRings(item);
|
||
if (item === card()) renderBand(role);
|
||
setActiveRole(role);
|
||
drawLoupe(ring, item, image);
|
||
}
|
||
|
||
function wireRing(ring, item, image) {
|
||
const move = (e) => {
|
||
const box = image.getBoundingClientRect();
|
||
sample(ring, item, image, (e.clientX - box.left) / box.width * 100, (e.clientY - box.top) / box.height * 100);
|
||
};
|
||
ring.onpointerdown = (e) => {
|
||
if (e.button !== 0) return;
|
||
ring.focus();
|
||
ring.setPointerCapture(e.pointerId);
|
||
ring.dataset.dragging = '';
|
||
move(e);
|
||
};
|
||
ring.onpointermove = (e) => {
|
||
if (ring.hasPointerCapture(e.pointerId)) {
|
||
dismissRingGuide();
|
||
move(e);
|
||
}
|
||
};
|
||
ring.onpointerup = (e) => {
|
||
move(e);
|
||
ring.releasePointerCapture(e.pointerId);
|
||
delete ring.dataset.dragging;
|
||
if (document.activeElement !== ring) delete loupe.dataset.visible;
|
||
};
|
||
ring.onfocus = () => image.complete && drawLoupe(ring, item, image);
|
||
ring.onblur = () => {
|
||
if (!('dragging' in ring.dataset)) delete loupe.dataset.visible;
|
||
};
|
||
ring.onkeydown = (e) => {
|
||
const moves = { ArrowLeft: [-1, 0], ArrowRight: [1, 0], ArrowUp: [0, -1], ArrowDown: [0, 1] };
|
||
if (!moves[e.key]) return;
|
||
e.preventDefault();
|
||
dismissRingGuide();
|
||
const step = e.shiftKey ? 5 : 1;
|
||
const [x, y] = states.get(item.id).rings[ring.dataset.role];
|
||
sample(ring, item, image, x + moves[e.key][0] * step, y + moves[e.key][1] * step);
|
||
};
|
||
}
|
||
|
||
function buildCard(item) {
|
||
const node = $(`[data-${item.type}-card]`).content.firstElementChild.cloneNode(true);
|
||
node.dataset.id = item.id;
|
||
const face = $('.picker-card-face', node);
|
||
if (item.type === 'seed') {
|
||
$$('span', face).forEach((stripe, index) => {
|
||
stripe.style.setProperty('--seed-color', states.get(item.id).colors[ROLES[index]]);
|
||
});
|
||
} else {
|
||
const image = $('img', face);
|
||
image.alt = `Visual cue ${item.id}`;
|
||
image.src = `/cues/${encodeURIComponent(item.id)}.png`;
|
||
$$('.picker-ring', face).forEach((ring) => {
|
||
const role = ring.dataset.role;
|
||
ring.setAttribute('aria-valuetext', states.get(item.id).colors[role]);
|
||
wireRing(ring, item, image);
|
||
});
|
||
image.addEventListener('load', () => {
|
||
item.defaultRings = roleMap((role) => {
|
||
const [x, y] = item.palette[role].at;
|
||
return [x / image.naturalWidth * 100, y / image.naturalHeight * 100];
|
||
});
|
||
states.get(item.id).rings = structuredClone(item.defaultRings);
|
||
syncRings(item);
|
||
if (item === card()) sourceCanvas(image);
|
||
});
|
||
}
|
||
item.node = node;
|
||
return node;
|
||
}
|
||
|
||
function closeTints() {
|
||
if (!openTint) return;
|
||
const item = $(`[data-band-item="${openTint}"]`, panel);
|
||
delete item.dataset.tintOpen;
|
||
$('[data-tints]', item).hidden = true;
|
||
openTint = null;
|
||
}
|
||
|
||
function render() {
|
||
const active = card();
|
||
cards.forEach(({ node }, index) => {
|
||
const delta = index - current;
|
||
node.dataset.pos = Math.max(-2, Math.min(2, delta));
|
||
node.classList.toggle('is-far', Math.abs(delta) > 2);
|
||
node.setAttribute('aria-hidden', delta !== 0);
|
||
});
|
||
$('[data-deck-prev]').disabled = current === 0;
|
||
$('[data-deck-next]').disabled = current === cards.length - 1;
|
||
count.textContent = `${current + 1} / ${cards.length}`;
|
||
for (const role of ROLES) renderBand(role);
|
||
syncRings(active);
|
||
if (active.type === 'cue') {
|
||
const image = $('img', active.node);
|
||
if (image.complete && image.naturalWidth) sourceCanvas(image);
|
||
}
|
||
closeTints();
|
||
}
|
||
|
||
function browse(index) {
|
||
const next = Math.min(cards.length - 1, Math.max(0, index));
|
||
const behavior = matchMedia('(prefers-reduced-motion: reduce)').matches ? 'auto' : 'smooth';
|
||
points.children[next].scrollIntoView({ behavior, block: 'start' });
|
||
}
|
||
|
||
function deckKeys(e) {
|
||
if (e.key === 'Escape' && openTint) {
|
||
e.preventDefault();
|
||
closeTints();
|
||
return;
|
||
}
|
||
const delta = { ArrowLeft: -1, ArrowRight: 1 }[e.key];
|
||
if (!delta) return;
|
||
if (e.target instanceof Element && e.target.closest('[role="slider"], input')) return;
|
||
e.preventDefault();
|
||
browse(current + delta);
|
||
}
|
||
|
||
const activate = (value) => document[value ? 'addEventListener' : 'removeEventListener']('keydown', deckKeys, true);
|
||
|
||
function openTints(role) {
|
||
closeTints();
|
||
openTint = role;
|
||
setActiveRole(role);
|
||
const item = $(`[data-band-item="${role}"]`, panel);
|
||
const strip = $('[data-tints]', item);
|
||
const current = state().colors[role];
|
||
const [L, C, H] = hexToOklch(current);
|
||
// The strip pivots on the band's color: the middle swatch is that color
|
||
// exactly, the three to its left step toward near-white, the three to its
|
||
// right toward near-black. Chroma eases off toward the ends so the
|
||
// extremes stay in gamut instead of clipping to a different hue.
|
||
$$('[data-tint]', strip).forEach((button, index) => {
|
||
const offset = index - 3;
|
||
const tintL = offset < 0
|
||
? L + (0.96 - L) * (-offset / 3)
|
||
: L - (L - 0.16) * (offset / 3);
|
||
const hex = offset === 0
|
||
? current
|
||
: oklchToHex([tintL, C * (1 - 0.3 * (Math.abs(offset) / 3)), H]);
|
||
button.dataset.tint = hex;
|
||
button.style.setProperty('--tint-color', hex);
|
||
button.setAttribute('aria-label', hex);
|
||
button.toggleAttribute('data-current', offset === 0);
|
||
});
|
||
strip.hidden = false;
|
||
item.dataset.tintOpen = '';
|
||
$('button', strip)?.focus();
|
||
}
|
||
|
||
panel.onpointerover = panel.onfocusin = ({ target }) => {
|
||
const band = target.closest('[data-band]');
|
||
if (band) setActiveRole(band.dataset.band);
|
||
};
|
||
panel.oninput = ({ target }) => {
|
||
if (target.matches('[data-color-input]')) setColor(target.dataset.colorInput, target.value);
|
||
};
|
||
panel.onclick = async (e) => {
|
||
const data = e.target.closest('button')?.dataset;
|
||
if (!data) return;
|
||
if (data.copyColor) {
|
||
const hex = state().colors[data.copyColor];
|
||
await navigator.clipboard.writeText(`${hex}\n${formatOklch(hex)}`);
|
||
const tip = data.tip;
|
||
data.tip = 'Copied';
|
||
setTimeout(() => data.tip = tip, 1200);
|
||
} else if (data.editTints) openTints(data.editTints);
|
||
else if (data.customColor) $(`[data-color-input="${data.customColor}"]`, panel).click();
|
||
else if (data.tint) setColor(openTint, data.tint);
|
||
else if ('closeTints' in data) closeTints();
|
||
else if ('reset' in data) {
|
||
const item = card();
|
||
const fresh = createState(item);
|
||
if (item.type === 'cue' && item.defaultRings) fresh.rings = structuredClone(item.defaultRings);
|
||
states.set(item.id, fresh);
|
||
render();
|
||
} else if ('selectPalette' in data) {
|
||
const item = card();
|
||
$('[name="palette-source"]').value = item.id;
|
||
for (const role of ROLES) $(`[name="palette-${role}"]`).value = state().colors[role];
|
||
}
|
||
};
|
||
|
||
$('[data-deck-prev]').onclick = () => browse(current - 1);
|
||
$('[data-deck-next]').onclick = () => browse(current + 1);
|
||
scroller.addEventListener('scroll', () => {
|
||
const height = points.firstElementChild?.offsetHeight || 1;
|
||
const next = Math.min(cards.length - 1, Math.round(scroller.scrollTop / height));
|
||
if (next !== current) {
|
||
const node = card().node;
|
||
node.dataset.exit = next > current ? 'left' : 'right';
|
||
setTimeout(() => delete node.dataset.exit, 280);
|
||
current = next;
|
||
delete card().node.dataset.exit;
|
||
render();
|
||
}
|
||
}, { passive: true });
|
||
document.addEventListener('picker:screenchange', (event) => {
|
||
activate(event.detail.screen === '02');
|
||
const target = { '03': strategyPreview, '04': typePreview, '05': scaleSheet }[event.detail.screen];
|
||
if (target) syncCommittedPalette(target);
|
||
// A hidden sheet measures zero, so the fit can only be resolved on arrival.
|
||
// The scroll waits a frame: the screen change focuses the first control after
|
||
// this event, and that scrolls the list back to the top.
|
||
if (event.detail.screen === '05') {
|
||
fitScaleSheet();
|
||
requestAnimationFrame(() => {
|
||
scaleOptions.querySelector('input:checked')?.parentElement.scrollIntoView({ block: 'center' });
|
||
});
|
||
}
|
||
});
|
||
|
||
try {
|
||
const get = (url) => fetch(url).then((response) => response.ok ? response.json() : Promise.reject());
|
||
const [cueData, seedData] = await Promise.all([get('/cues.json'), get('/palettes.json')]);
|
||
cards = [
|
||
...cueData.cues.map((id) => ({ id, type: 'cue', palette: cueData.palette[id] })),
|
||
...seedData.seeds.map((seed) => ({ ...seed, type: 'seed' })),
|
||
];
|
||
for (const item of cards) states.set(item.id, createState(item));
|
||
layer.append(...cards.map(buildCard));
|
||
points.innerHTML = '<div class="picker-snap-point"></div>'.repeat(cards.length);
|
||
$('[data-select-palette]').disabled = false;
|
||
render();
|
||
activate(screen.hasAttribute('data-active'));
|
||
} catch {
|
||
count.textContent = 'Palette sources could not be loaded.';
|
||
}
|
||
|
||
let manifest = FALLBACK_FONTS;
|
||
let usingFallback = true;
|
||
try {
|
||
const response = await fetch('/fonts.json');
|
||
const candidate = response.ok ? await response.json() : null;
|
||
if (isFontManifest(candidate)) {
|
||
manifest = normalizeFontManifest(candidate);
|
||
usingFallback = false;
|
||
}
|
||
} catch {
|
||
// The built-in pairs keep older and incomplete runs moving.
|
||
}
|
||
renderFontPairs(manifest, usingFallback);
|