Programma di un convegno con griglia oraria a celle unite

// ═══ Postext Cookbook · Nº 053 · Conference programme with a merged schedule grid ═══════
// https://postext.dev/en/cookbook/conference-programme
// Code: MIT · Text: original, in Catalan (CC BY 4.0) · Drawings: generated in code (CC BY 4.0)
// Fonts: Schibsted Grotesk, Unbounded, Chivo Mono (SIL OFL 1.1) · Needs postext ≥ 1.25.0
import {
  buildDocumentWithFonts, prepareFonts, renderPageToCanvas, registerResourceImage,
  defaultResourceTypes, mergeCells, setCellContent, setCellBackground, setAlignment,
} from 'https://esm.sh/postext';

const LANG = 'en'; // @lang: the language of the sample document ('en' | 'es')
const RECIPE = 'conference-programme';

// ─── 1 · Design ─────────────────────────────────────────────────────────────
const palette = {
  ink: '#1d1b24', paper: '#ffffff', // a violet near-black; type on the ink fills
  tipo: '#b09cf2', digital: '#4fc7bb', edicio: '#f4b43a', // the three tracks: fills and swatches
  pause: '#ecebf1', // registration, breaks and meals
  accent: '#6a3ed3', // kickers, caption labels, the parts of the day
  muted: '#67636f', // running heads and notes
};
// Each colour carries its hex and the palette entry it follows.
const col = (id) => ({ hex: palette[id], model: 'hex', paletteId: id });
const colorPalette = Object.entries({ ...palette, 'main-color': palette.accent }) // defaults' id
  .map(([id, hex]) => ({ id, name: id, value: { hex, model: 'hex' } }));
const [TEXT, DISPLAY, LABEL] = ['Schibsted Grotesk', 'Unbounded', 'Chivo Mono'];
const PAGE = { w: 170, h: 240, top: 22, bottom: 20, inner: 17, outer: 15 }; // mm, mirrored
const LEAD = 13; // pt: the body's leading and baseline grid
const PT = 25.4 / 72; // mm in a point
const chip = (text, style) => `:chip[${text}]{style="${style}"}`;

// #region answer: a day's schedule as a table with merged cells, track fills and a head row
const ROOMS = ['Sala Gran', 'Sala de les Premses', 'Aula Taller'];
const TRACKS = { T: 'tipo', D: 'digital', E: 'edicio', '*': 'ink' }; // '*': a plenary
const at = (row, c) => ({ row, col: c });
const span = (r0, c0, r1, c1) => ({ start: at(r0, c0), end: at(r1, c1) });
const lines = (code, text) => text.split(' / ').map((line, i) => { // title, then speaker
  const run = i === 0 ? `**${line}**` : line;
  return code === '*' ? chip(run, 'blanc') : run; // paper-white type on the ink fill
}).join('\n'); // a line break in a cell starts a new paragraph
function schedule(text) { // '11.15 | T Title / Speaker | ^' · a bare line: a part of the day
  let m = { headerRowCount: 1, columnWidths: [12, 42, 42, 42], // weights of the 138 mm measure
    rows: [['Hora', ...ROOMS].map((room) => ({ content: room.toUpperCase(), isHeader: true }))] };
  for (const line of text.trim().split('\n')) {
    const [time, ...slots] = line.split(' | ');
    const r = m.rows.push(['', ...ROOMS].map(() => ({ content: '' }))) - 1; // four empty cells
    if (!slots.length) { // one cell across the table; a split keeps it with the rows it heads
      m = setCellContent(m, at(r, 0), chip(time.toUpperCase(), 'franja'));
      m = mergeCells(m, span(r, 0, r, 3));
      continue;
    }
    m = setCellContent(m, at(r, 0), chip(time, 'hora'));
    slots.forEach((slot, i) => {
      if (slot === '^') { // the session above runs on: one cell down both rows, centred in them
        m = mergeCells(m, span(r - 1, i + 1, r, i + 1));
        m = setAlignment(m, at(r - 1, i + 1), 'left', 'middle');
        return;
      }
      const [, code = '', body = slot] = /^([TDE*]) (.+)$/.exec(slot) ?? [];
      m = setCellContent(m, at(r, i + 1), lines(code, body));
      m = setCellBackground(m, at(r, i + 1), col(TRACKS[code] ?? 'pause'));
    });
    if (slots.length === 1) m = mergeCells(m, span(r, 1, r, 3)); // the same for all three rooms
  }
  return m; // mergeCells marks the covered cells hiddenBy (gotcha: merged-cells-hiddenby)
}
// #endregion

// #region split: where each day's grid lands and how it continues, labelled in Catalan
// The built-in types in Catalan, Figura and Taula; a grid's caption goes above it.
const resourceTypes = defaultResourceTypes('ca').map((type) => ({ ...type,
  ...(type.id === 'table' && { captionStyle: { position: 'above' } }),
  numberingTemplate: '{n}', resetOn: 'never' })); // Taula 1, Taula 2: one count, not per day
const SPLIT = { overflow: 'split', // the default; the other values are 'clip' and 'hide'
  // The engine's own Catalan strings are '(cont.)' and 'Continua': these spell them out.
  continuedSuffix: '(continuació)', // after the caption of every part but the first
  continuesMarker: 'Continua a la pàgina següent' }; // under every part but the last
// Thursday is cited on page 2 and placed at the top, so it opens page 3 (gotcha:
// top-float-next-page) and splits; Friday goes whole to the foot of the page that cites it.
const PLACE = { dijous: { position: 'top', span: 'page' },
  divendres: { position: 'bottom', span: 'page' } };
// #endregion

// #region tiles: paper-coloured rules cut the fills into tiles; chips set the times and heads
const tableStyle = { ...SPLIT, borderColor: col('paper'), borderWidth: pt(1.6), // grid rules
  headerBackground: col('ink'), headerColor: col('paper'), headerFontFamily: LABEL,
  headerFontSize: pt(7.5), bodyFontSize: pt(8.2),
  cellPadding: mm(1.5) };
const bare = (id, extra) => ({ id, backgroundEnabled: false, borderWidth: pt(0),
  paddingX: pt(0), ...extra }); // a chip that only changes the face, the size or the colour
const chipStyles = [bare('blanc', { color: col('paper') }), // the plenary's type, on ink
  bare('hora', { fontFamily: LABEL, fontSize: em(0.96), bold: true }),
  bare('franja', { fontFamily: LABEL, fontSize: em(0.92), bold: true, color: col('accent') }),
  bare('sala')]; // keeps each room of the plan's note on one line
// #endregion

// #region opener: an ink band per day with the date, a 144 pt numeral and the day's name
const BAND = 76, STRIP = 8, AIR = 7; // mm: band from the trim, its strip of modules, air below
const text = (id, content, family, size, color, placement, extra) => ({ kind: 'text', id,
  content, fontFamily: family, fontSize: pt(size), color: col(color), placement, align: 'left',
  overflow: 'wrap', ...extra }); // a long line wraps, in the running heads too
const pin = (to, edge, x, y, size) => ({ anchor: { to, edge }, offset: { x: mm(x), y: mm(y) },
  ...(size && { size }) });
const caps = (size) => ({ fontWeight: 500, textTransform: 'uppercase',
  letterSpacing: pt(size * 0.18) });
const NUMERAL = 144; // pt
// mm: Unbounded 800's 1 at 144 pt starts its ink 0.76 mm into its box, the date's first capital
// at 8 pt 0.1 to 0.2 mm into its own (P 0.19, S 0.09): 0.6 mm to the left lines up the two inks
const BEARING = 0.6;
const BASELINE = 0.8; // a design line's baseline sits 0.8 down its box (lineHeight 1)
const opener = { enabled: true, minHeight: mm(BAND - PAGE.top + AIR), slot: { elements: [
  { kind: 'box', id: 'band', style: { backgroundColor: col('ink') },
    placement: pin('bleed', 'top-left', 0, 0, { width: 'fill', height: mm(BAND) }) },
  { kind: 'image', id: 'strip', resourceId: 'strip', placement: pin('page', 'top-left', 0,
    BAND - STRIP, { width: mm(PAGE.w), height: mm(STRIP) }) }, // on the band's foot
  text('date', '{attr.date}', LABEL, 8, 'edicio', pin('container', 'top-left', 0, 0), caps(8)),
  text('numeral', '{attr.day}', DISPLAY, NUMERAL, 'paper', pin('#date', 'below', -BEARING, 1),
    { fontWeight: 800, lineHeight: 1 }), // a 144 pt line box
  text('title', '{titleText}', DISPLAY, 26, 'paper', // its baseline level with the numeral's
    pin('#numeral', 'right-of', 5, BASELINE * (NUMERAL - 26) * PT),
    { fontWeight: 700, lineHeight: 1 }),
] } };
// #endregion

// #region bios: a hanging indent for the speakers' notes
const paragraphStyles = [
  { id: 'bio', hangingIndent: mm(4) }, // the name at the column edge, the lines under it 4 mm in
  { id: 'colophon', fontFamily: LABEL, fontSize: pt(7.4), lineHeight: pt(LEAD * 0.75),
    textAlign: 'left', color: col('muted'), firstLineIndent: pt(0), marginTop: pt(LEAD) },
];
// #endregion

const head = (id, content, parity, x, extra) => text(id, content, LABEL, 7.5, 'muted',
  pin('page', x > 0 ? 'top-left' : 'top-right', x, 11), { ...caps(7.5), parity, pages: 'body',
    ...extra }); // body pages only: the cover and the openers have none
const folio = { fontWeight: 700, color: col('ink'), letterSpacing: pt(0) };
const header = { elements: [
  head('verso-folio', '{pageNumber}', 'even', PAGE.outer, folio),
  head('verso-title', '{title}', 'even', PAGE.outer + 8),
  head('recto-title', '{chapterTitle} {attr.day} de novembre', 'odd', -(PAGE.outer + 8)),
  head('recto-folio', '{pageNumber}', 'odd', -PAGE.outer, folio)] };
const footer = { elements: [text('drop-folio', '{pageNumber}', LABEL, 7.5, 'ink',
  pin('page', 'bottom', 0, -11), { ...folio, pages: 'opener', align: 'center' })] };

// The cover is a heading style: an ink page with the L·L of modules and the title. The next
// heading breaks the page, so the cover needs no :::pagebreak after it.
const coverStyle = { id: 'coberta', numbered: false,
  header: { elements: [] }, footer: { elements: [] }, // no running heads on the cover
  advancedDesign: { enabled: true, minHeight: mm(PAGE.h - PAGE.top - PAGE.bottom), slot: {
    elements: [
      { kind: 'box', id: 'field', style: { backgroundColor: col('ink') },
        placement: pin('bleed', 'top-left', 0, 0, { width: 'fill', height: mm(PAGE.h) }) },
      { kind: 'image', id: 'modules', resourceId: 'modules',
        placement: pin('page', 'top-left', 0, 0, { width: mm(PAGE.w), height: mm(142) }) },
      text('kicker', '{attr.kicker}', LABEL, 8.5, 'edicio', pin('page', 'top-left', 17, 162),
        caps(8.5)),
      text('name', '{titleText}', DISPLAY, 31, 'paper', pin('#kicker', 'below', -0.8, 3,
        { width: mm(138) }), { fontWeight: 700, lineHeight: 1.08 }),
      text('dates', '{attr.dates}', DISPLAY, 17, 'tipo', pin('#name', 'below', 0, 6),
        { fontWeight: 700, lineHeight: 1 }),
      text('place', '{attr.place}', LABEL, 8.5, 'paper', pin('#dates', 'below', 0.8, 3),
        caps(8.5)),
    ] } } };

const config = () => ({
  locale: 'ca', // the programme is in Catalan in both editions: written out, never LANG
  resourceTypes, colorPalette, tableStyle, chipStyles, paragraphStyles,
  header, footer, headingStyles: [coverStyle],
  page: { width: mm(PAGE.w), height: mm(PAGE.h), dpi: 150, // a 1,004 px canvas per page
    margins: { top: mm(PAGE.top), bottom: mm(PAGE.bottom), left: mm(PAGE.inner),
      right: mm(PAGE.outer), mirror: true } },
  layout: { layoutType: 'double', gutterWidth: mm(6) },
  bodyText: { fontFamily: TEXT, fontSize: pt(9.4), lineHeight: pt(LEAD), color: col('ink'),
    boldColor: col('ink'), italicColor: col('ink'), referenceColor: col('ink'),
    textAlign: 'left', firstLineIndent: pt(0), paragraphSpacing: true }, // ragged, spaced
  headings: { fontFamily: DISPLAY, fontWeight: 600, color: col('ink'), levels: [
    // A day opens a new page, on either side.
    { level: 1, span: 'page', breakBefore: { enabled: true, parity: 'any' },
      advancedDesign: opener, marginBottom: pt(0) },
    { level: 2, fontSize: pt(11.5), lineHeight: pt(LEAD), marginTop: pt(LEAD),
      marginBottom: pt(LEAD / 2) },
  ] },
  captionStyle: { fontFamily: LABEL, fontSize: pt(7.6), labelColor: col('accent'), gap: mm(2),
    note: { fontSize: pt(7.4), color: col('muted') } },
});

// ─── 2 · Content ────────────────────────────────────────────────────────────
const markdown = String.raw`---
Esempio Markdown · 81 righe · content.en.md
title: "7es Jornades de Tipografia i Edició Digital"
author: "Comitè organitzador de les Jornades"
---

# Jornades de Tipografia i Edició Digital {style="coberta" kicker="7es Jornades · Programa" dates="12–13.11.2026" place="Girona · La Impremta, Barri Vell"}

# Dijous {day="12" date="Primera jornada · 12 de novembre"}

La Impremta, l’antiga fàbrica de llibretes del Barri Vell, torna a acollir les Jornades. Hi ha ponències a la Sala de les Premses, on encara funciona la minerva de 1908, i a la Sala Gran, la nau on hi havia les guillotines. Els tallers ocupen l’Aula Taller, al primer pis. El plànol de l’última pàgina situa les sales i l’escala.

L’acreditació obre a les 9.00 al vestíbul. La tarja dona accés a totes les sessions; els tallers, de vint places cadascun, demanen inscripció al mateix taulell fins a mitja hora abans de començar. Les ponències de la Sala Gran es tradueixen a l’anglès: demaneu els auriculars al taulell.

La :ref{id="dijous" style="full" case="lower"} recull el programa del dia, franja a franja. Cada sessió porta el color del seu itinerari: :swatch{color="tipo"} Tipografia, :swatch{color="digital"} Digital o :swatch{color="edicio"} Edició. Els tallers de l’Aula Taller ocupen dues franges seguides. La conferència inaugural, en negre, no coincideix amb cap altra sessió.

## Qui parla dijous

:::paragraphs{style="bio"}
**Marta Casadevall** (Barcelona, 1971) dibuixa lletres des del 1998. Ha fet famílies de text per a tres diaris en català i, amb la Galligants, de 2021, va proposar un glif propi per a la ela geminada. Obre les Jornades.

**Pere Ametller** (Vic, 1965) és filòleg i estudia com han compost el punt volat les impremtes catalanes des de les Normes ortogràfiques de 1913. Prepara una història gràfica de l’ortografia.

**Laia Pujolàs** (Girona, 1983) dirigeix la correcció d’Edicions Llumeneres, on ha passat tot el procés d’edició a XML. Explicarà què ha guanyat la correcció d’estil i què hi ha perdut.

**Quim Serrallonga** (Olot, 1958) va treballar trenta anys de caixista i ara ensenya composició manual a La Impremta. Al seu taller cada participant compon i estampa una targeta amb tipus de plom.

**Irene Bosch** (València, 1989) programa interfícies per a una agència de notícies i fa servir fonts variables per ajustar l’amplada dels titulars a cada pantalla, del rellotge al televisor.

**Arnau Vidal Roca** (Manresa, 1977) publica llibres de butxaca amb tirades de tres-cents exemplars i impressió digital. Ensenyarà els comptes de deu anys d’editorial, títol per títol.

**Sílvia Ferrer** (Lleida, 1980) assessora editorials en accessibilitat. Des que la directiva europea s’aplica als llibres electrònics, el juny de 2025, revisa fitxers EPUB per a segells petits. Modera la taula rodona.

**Jordi Baulenas** (Terrassa, 1969) aplega mostraris de les foneries catalanes i estudia el Supertipo Veloz, els mòduls que Joan Trochut va publicar el 1942.

**Clara Tió** (Sabadell, 1986) fa fonts per encàrrec i ensenya a editors i maquetistes a treure profit de les taules OpenType: lligadures, versaletes, xifres elzevirianes i formes locals.

**Nil Garriga** (Reus, 1992) treballa en un motor de maquetació per a navegadors. Explicarà per què el guionet de final de ratlla no parteix igual les paraules en català, en castellà i en anglès.

**Ada Rigau** (Barcelona, 1990) dissenya lletres grotesques. Ha dibuixat els accents, la ce trencada i la ela geminada d’una família de set gruixos i en portarà els esbossos.

**Rosa Fontanet** (Girona, 1975) fotografia els rètols pintats de la ciutat des del 2004 i n’ha publicat dos llibres. Fa una ponència a la tarda i guia el passeig del vespre pel Barri Vell.

**Oriol Mas** (Tarragona, 1984) compon llibres amb codi: escriu el text en Markdown i descriu la pàgina en un fitxer de configuració. Ha compost així aquest programa.
:::

## Al vespre

El passeig tipogràfic surt a les 19.00 del vestíbul i dura una hora i mitja: rètols pintats, làpides i aparadors, amb parades a la Rambla i a la plaça de l’Oli. Es fa encara que plogui; porteu calçat pla, perquè el Barri Vell és ple d’escales.

El sopar, al pati, comença a les 21.00. Costa 28 euros, amb menú vegetarià per a qui el demani, i cal reservar-lo al taulell d’acreditació abans de les 14.00. Si plou, es fa a la Sala Gran.

# Divendres {day="13" date="Segona jornada · 13 de novembre"}

Divendres és mitja jornada: la cloenda acaba a les 14.00, a temps per als trens de la tarda. La :ref{id="divendres" style="full" case="lower"} fa servir els mateixos colors que la de dijous, i el taller de pinzell ocupa dues franges. L’acreditació obre a les 9.00; qui ja té la tarja pot anar directament a la Sala Gran (:ref{id="planol" style="full" case="lower"}).

## Qui parla divendres

:::paragraphs{style="bio"}
**Ingrid Aalto** (Hèlsinki, 1968) dissenya fonts per a les llengües del nord d’Europa i ha estudiat com llegim en pantalla les llengües amb molts diacrítics. Parla en anglès, amb traducció.

**Pau Estrany** (Palma, 1987) escriu programari de composició i explicarà com mesura el text un navegador, de la mètrica de la font fins a la línia.

**Montse Garcia** (Badalona, 1972) és bibliotecària i coordina el dipòsit de llibres digitals d’una xarxa de biblioteques públiques, que ja en conserva més de dotze mil.

**Joana Pla** (Figueres, 1981) és retolista. Al seu taller s’hi pinta amb pinzell pla sobre paper d’embalar: majúscules romanes primer, cursiva després.

**Toni Masó** (Alcoi, 1966) ha digitalitzat quatre tipus de plom d’una foneria valenciana a partir del mostrari de 1920. Portarà les proves de cada gruix, impreses en tres cossos.

**Berta Soms** (Mataró, 1990) prepara PDF etiquetats per a lectors de pantalla i ensenya a revisar-los.

**Jaume Rovira** (Girona, 1979) és editor i publica els preus de fabricació de cada llibre de la seva editorial.

**Núria Solà** (Vilafranca del Penedès, 1985) ajusta l’espaiat de fonts per a revistes. Parlarà de l’apòstrof: *l’*, *d’*, *s’hi*.
:::

## Com arribar

La Impremta és al Barri Vell, a un quart d’hora a peu de les estacions de tren i d’autobusos; des del pont de Pedra, seguiu els senyals de les Jornades. La :ref{id="planol" style="full" case="lower"} situa les sales. L’entrada és pel vestíbul, on hi ha l’acreditació i el guarda-roba; el pati fa de menjador a les pauses.

:::paragraphs{style="colophon"}
Programa compost amb Postext en Schibsted Grotesk, Unbounded i Chivo Mono (SIL OFL 1.1). Text i dibuixos: CC BY 4.0. Les Jornades, La Impremta i les persones d’aquest programa són inventades.
:::
`; // the programme's text, in Catalan
const dijous = String.raw`Matí
Esempio Markdown · 16 righe · content.dijous.en.md
9.00 | Acreditació i cafè de benvinguda / Vestíbul
9.45 | * Una llengua amb punt volat / Marta Casadevall · conferència inaugural
10.45 | Pausa / Pati
11.15 | T El punt volat, de 1913 a Unicode / Pere Ametller | E Corregir dins d’un flux XML / Laia Pujolàs | T Taller: compondre a mà amb tipus de plom / Quim Serrallonga / 11.15–12.45 · 20 places
12.00 | D Fonts variables, del rellotge al televisor / Irene Bosch | E Tirades de tres-cents exemplars / Arnau Vidal Roca | ^
Migdia
12.45 | Dinar lliure als restaurants del Barri Vell
Tarda
14.30 | E EPUB accessible: què demana la llei / Sílvia Ferrer | T El Supertipo Veloz de Trochut / Jordi Baulenas | D Taller: OpenType per a editors / Clara Tió / 14.30–16.00 · 20 places
15.15 | D El guionet de final de ratlla / Nil Garriga | T Accents, ce trencada i ela geminada / Ada Rigau | ^
16.00 | Pausa / Pati
16.30 | E Taula rodona: editar en català / Sílvia Ferrer, amb Laia Pujolàs i Arnau Vidal Roca | T Rètols pintats de Girona / Rosa Fontanet | D Del Markdown a la pàgina / Oriol Mas
17.30 | E Presentació: la col·lecció Lletra Petita / Arnau Vidal Roca | D Demostració: eixos variables en directe / Irene Bosch | T Visita a la minerva de 1908 / Quim Serrallonga
Vespre
19.00 | T Passeig tipogràfic pel Barri Vell / Rosa Fontanet · sortida del vestíbul
21.00 | Sopar de les Jornades / Al pati · amb inscripció prèvia
`; // Thursday's sessions, one line per time slot
const divendres = String.raw`Matí
Esempio Markdown · 6 righe · content.divendres.en.md
9.30 | * El català a la pantalla, vist de fora / Ingrid Aalto · en anglès, amb traducció
10.30 | D Com mesura el text un navegador / Pau Estrany | E El dipòsit dels llibres digitals / Montse Garcia | T Taller: majúscules amb pinzell pla / Joana Pla / 10.30–12.00 · 20 places
11.15 | T Del plom al fitxer variable / Toni Masó | D PDF per a lectors de pantalla / Berta Soms | ^
12.00 | Pausa / Pati
12.30 | E Què costa fer un llibre / Jaume Rovira | T L’apòstrof i l’espaiat / Núria Solà | T Taller obert de composició / Quim Serrallonga
13.30 | * Cloenda / Comitè organitzador
`; // Friday's

// #region art: the cover's L·L in modules, the band's strip and the venue's floor plan
const n = (v) => +v.toFixed(2);
function mulberry32(seed) { // a seeded PRNG: the same modules in every capture
  return () => {
    seed = (seed + 0x6d2b79f5) | 0;
    let r = Math.imul(seed ^ (seed >>> 15), 1 | seed);
    r = (r + Math.imul(r ^ (r >>> 7), 61 | r)) ^ r;
    return ((r ^ (r >>> 14)) >>> 0) / 4294967296;
  };
}
const svg = (w, h, body) => `<svg xmlns="http://www.w3.org/2000/svg" width="${w * 10}" `
  + `height="${h * 10}" viewBox="0 0 ${w} ${h}">${body}</svg>`;
const P = palette;
// One module in an s × s cell at (x, y), turned by quarter turns about the cell's centre:
// 0 a quarter disc, 1 a half disc, 2 a half-width bar, 3 a disc, 4 a square.
function module(kind, turn, x, y, s, fill) {
  const c = `transform="rotate(${turn * 90} ${n(x + s / 2)} ${n(y + s / 2)})" fill="${fill}"`;
  if (kind === 0) return `<path d="M${n(x)} ${n(y)}h${s}A${s} ${s} 0 0 1 ${n(x)} ${n(y + s)}Z" `
    + `${c}/>`;
  if (kind === 1) return `<path d="M${n(x)} ${n(y + s)}A${s / 2} ${s / 2} 0 0 1 ${n(x + s)} `
    + `${n(y + s)}Z" ${c}/>`;
  if (kind === 2) return `<rect x="${n(x)}" y="${n(y)}" width="${n(s / 2)}" height="${s}" ${c}/>`;
  if (kind === 3) return `<circle cx="${n(x + s / 2)}" cy="${n(y + s / 2)}" r="${n(s / 2)}" `
    + `${c}/>`;
  return `<rect x="${n(x)}" y="${n(y)}" width="${s}" height="${s}" ${c}/>`;
}
// The cover: L·L, the capital ela geminada, drawn with the modules on a 26 mm grid: each L is
// a stem five cells tall with a quarter-disc foot, the punt volat a disc at mid cap height.
function coverArt(w, h, s, x0, y0) {
  const ell = (c, id) => { const x = x0 + c * s; // one path: no seam between stem and foot
    return `<path d="M${x} ${y0}h${s}v${4 * s}a${s} ${s} 0 0 1 ${s} ${s}H${x}Z" `
      + `fill="${P[id]}"/>`; };
  const dot = `<circle cx="${x0 + 2.5 * s}" cy="${y0 + 2.5 * s}" r="${n(0.36 * s)}" `
    + `fill="${P.edicio}"/>`;
  return svg(w, h, ell(0, 'tipo') + dot + ell(3, 'digital'));
}
function strip(w, s) { // the band's foot: one row of modules in the three track colours
  const rand = mulberry32(12);
  let out = '';
  for (let x = 0; x < w; x += s) {
    out += module(Math.floor(rand() * 5), Math.floor(rand() * 4), x, 0, s,
      P[['tipo', 'digital', 'edicio'][Math.floor(rand() * 3)]]);
  }
  return svg(w, s, out);
}
// The floor plan: ink walls, a tinted courtyard and the rooms numbered in discs. The digits
// are strokes, so the plan carries no font; the caption's note names the rooms.
const DIGITS = { 1: 'M1.8 2.6 3.6 1V9', 2: 'M1 3A2.5 2.5 0 1 1 5.2 4.8L1 9H5.4',
  3: 'M1.2 1H5L2.8 4.2A2.6 2.6 0 1 1 1 8.2', 4: 'M4.2 9V1L.8 6.6H5.6',
  5: 'M5.2 1H1.6L1.2 4.6A2.8 2.8 0 1 1 1.2 8.6',
  6: 'M4.6 1Q1 2.2.8 6.5A2.5 2.5 0 0 0 5.8 6.5 2.5 2.5 0 0 0 .8 6.5' };
const disc = (d, x, y) => `<circle cx="${x}" cy="${y}" r="3.4" fill="${P.ink}"/>`
  + `<path d="${DIGITS[d]}" transform="translate(${n(x - 1.05)} ${n(y - 1.65)}) scale(.33)" `
  + 'fill="none" stroke="#fff" stroke-width="1.2" stroke-linecap="round" stroke-linejoin="round"/>';
const line = (d, w, color = P.ink) => `<path d="${d}" fill="none" stroke="${color}" `
  + `stroke-width="${w}" stroke-linecap="square"/>`;
function plan() { // ground floor, 138 × 66 mm: the street is at the foot, the courtyard east
  const treads = Array.from({ length: 6 }, (_, i) => `M${77 + i * 2.2} 41V55`).join('');
  return svg(138, 66, `<rect x="2" y="2" width="96" height="36" fill="${P.pause}"/>` // rooms 1–2
    + `<rect x="98" y="2" width="38" height="56" fill="${P.digital}" fill-opacity=".18"/>`
    + `<circle cx="126" cy="14" r="6" fill="${P.digital}"/>` // two trees in the courtyard
    + `<circle cx="108" cy="48" r="4.5" fill="${P.digital}"/>`
    + line(treads, 0.35, P.muted) // the stairs, and the lift beside them
    + line('M91 42h5v12h-5zM91 42l5 12M96 42l-5 12', 0.35, P.muted)
    + line('M44 58A6 6 0 0 1 50 52M56 58A6 6 0 0 0 50 52', 0.3, P.muted) // the street doors
    + line('M44 58H2V2H98V14M98 26V58H56', 1) // outer walls, with the doors left open
    + line('M52 2V38M2 38H34M44 38H60M70 38H98M26 38V43M26 53V58M74 38V43M74 53V58', 0.6)
    + line('M98 2H136V58H98', 0.6) // the courtyard
    + `<path d="M49.3 65.5V61.2H47L50 58.6l3 2.6h-2.3v4.3Z" fill="${P.accent}"/>` // way in
    + disc(1, 27, 20) + disc(2, 75, 20) + disc(3, 83.5, 48) + disc(4, 50, 47)
    + disc(5, 14, 48) + disc(6, 117, 30));
}
// #endregion

// #region resources: the two grids, keyed by swatches in their captions, and the plan
const KEY = ':swatch{color="tipo"} Tipografia · :swatch{color="digital"} Digital · '
  + ':swatch{color="edicio"} Edició';
const table = (id, caption, model, note) => ({ id, typeId: 'table', kind: 'table',
  caption: `${caption} ${KEY}`, note, table: { model }, placement: PLACE[id],
  createdAt: 0, updatedAt: 0 });
const picture = (id, markup, w, h, extra) => ({ id, typeId: 'figure', kind: 'svg', markup,
  svg: { fileId: `${id}.svg`, width: w * 10, height: h * 10 }, createdAt: 0, updatedAt: 0,
  ...extra });
const drawings = [ // the cover and the band draw the first two by id; the plan is cited
  picture('modules', coverArt(PAGE.w, 142, 26, 20, 12), PAGE.w, 142,
    { altText: 'L·L, la ela geminada majúscula, feta de mòduls violeta, turquesa i ambre' }),
  picture('strip', strip(PAGE.w, STRIP), PAGE.w, STRIP,
    { altText: 'Una filera de mòduls de lletra en els colors dels itineraris' }),
  // Cited on page 5, under the opener, so it heads page 6 (gotcha: top-float-next-page).
  picture('planol', plan(), 138, 66, { caption: 'La Impremta, planta baixa.',
    note: ['1 Sala Gran', '2 Sala de les Premses', '3 Aula Taller, al primer pis', '4 Vestíbul',
      '5 Guarda-roba', '6 Pati'].map((room) => chip(room, 'sala')).join(' · '),
    placement: { position: 'top', span: 'page' },
    altText: 'Planta de La Impremta amb les sales numerades de l’1 al 6' }),
];
const resources = [...drawings.map(({ markup, ...r }) => r),
  table('dijous', 'Dijous 12 de novembre.', schedule(dijous), 'Les ponències duren quaranta '
    + 'minuts, més cinc de preguntes; els tallers, noranta.'),
  table('divendres', 'Divendres 13 de novembre.', schedule(divendres)),
];
for (const { svg: { fileId }, markup } of drawings) await loadSvg(fileId, markup);
// #endregion

// ─── 3 · Fonts ──────────────────────────────────────────────────────────────
const FONTS = { // every face the layout uses, loaded before the build
  'Schibsted Grotesk': ['400', '400i', '700'], // text, bios and cells
  Unbounded: ['600', '700', '800'], // sections; titles; the day's numeral
  'Chivo Mono': ['400', '400i', '500', '700'] }; // labels, times, captions and the colophon

// ─── 4 · Build & show ───────────────────────────────────────────────────────
const allText = [markdown, dijous, divendres].join('\n');
await prepareFonts(allText, config(), kitFonts(FONTS));
const doc = await buildDocumentWithFonts({ markdown, resources }, config(),
  { ...kitFonts(FONTS), text: allText });
showPages(doc, { title: 'Jornades de Tipografia i Edició Digital · Programa' });

Kit · core, fonts, viewer, images: uguale in ogni ricetta · 270 righe
// ─── Kit ── helpers shared by every Cookbook recipe · postext.dev/cookbook ─────

// ─── Kit · core v1 ── the same in every recipe · postext.dev/cookbook
function mm(value) { return { value, unit: 'mm' }; }
function pt(value) { return { value, unit: 'pt' }; }
function em(value) { return { value, unit: 'em' }; }
/** The sample language's string: t({ en: 'Figure', es: 'Figura' }). */
function t(strings) { return strings[LANG] ?? Object.values(strings)[0]; }
/** A file in this recipe's assets folder, served from the Postext repo by jsDelivr. */
function asset(file) { return `https://cdn.jsdelivr.net/gh/drnachio/postext@main/cookbook/${RECIPE}/assets/${file}`; }

// ─── Kit · fonts v3 ── the same in every recipe · postext.dev/cookbook
// Postext loads the faces a config asks for before layout (prepareFonts,
// buildDocumentWithFonts) and asks the kit for the files: Fontsource's, the
// files the PDF embeds too.

/** The options of buildDocumentWithFonts / prepareFonts / withLoadedFonts:
 *  the Fontsource resolver, and the faces of FONTS loaded with the ones the
 *  config names. FONTS = { 'Family Name': ['400', '400i', '700'] }. */
function kitFonts(FONTS = {}) {
  const faces = Object.entries(FONTS).flatMap(([family, specs]) => specs.map((spec) =>
    ({ family, weight: parseInt(spec, 10), style: spec.endsWith('i') ? 'italic' : 'normal' })));
  return { resolve: fontsourceResolver, faces };
}

/** A face's Fontsource files, in a fixed order: latin, then latin-ext and greek
 *  when `text` needs them and the family ships them (kitSubsetsFor), each with
 *  its unicode-range. Null for a weight or slant Fontsource does not ship. */
async function fontsourceResolver(family, weight, style, { text = '' } = {}) {
  const id = fontsourceId(family);
  const meta = await fontsourceMeta(family);
  if (meta && !(meta.weights.includes(weight) && meta.styles.includes(style))) return null;
  kitStatus('Loading fonts…');
  const at = await fontsourceAt(id);
  return ['latin', ...kitSubsetsFor(text, meta)].map((subset) => ({
    source: `${at}files/${id}-${subset}-${weight}-${style}.woff2`,
    unicodeRange: kitRanges()[subset],
  }));
}

/** The unicode-range of each Fontsource file the kit loads (a function: the
 *  kit is inlined after the pen's code, which runs before a const would be set). */
function kitRanges() {
  return {
    latin: 'U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,'
      + 'U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD',
    'latin-ext': 'U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,'
      + 'U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF',
    greek: 'U+0370-03FF',
  };
}

/** For the cjk, arabic and comics blocks, which add their own files: the
 *  faces of `faces` = { 'Family Name': ['400', '400i', '700'] }. `text` is the sample:
 *  č ł † α χ also load latin-ext and greek files (kitSubsetsFor). With
 *  `optional`, a face Fontsource does not ship is skipped instead of failing.
 *  The files are added once all have loaded, in the order asked (latin, then
 *  latin-ext, then greek), whatever order they arrive in: the last one added
 *  wins a character two files hold. Resolves to the number of faces added. */
async function loadFonts(faces, text = '', { optional = false } = {}) {
  kitStatus('Loading fonts…');
  const ranges = kitRanges();
  const jobs = [];
  for (const [family, specs] of Object.entries(faces)) {
    const id = fontsourceId(family);
    const todo = [...new Set(specs)].map((spec) => [parseInt(spec, 10), spec.endsWith('i') ? 'italic' : 'normal'])
      .filter(([weight, style]) => !hasFace(family, weight, style)); // before any await
    const at = fontsourceAt(id);
    const meta = optional || /[^\0-ÿ]/u.test(text) ? await fontsourceMeta(family) : null;
    const subsets = ['latin', ...kitSubsetsFor(text, meta)];
    for (const [weight, style] of todo) {
      if (optional && !(meta?.weights.includes(weight) && meta.styles.includes(style))) continue;
      for (const subset of subsets) {
        const url = `${await at}files/${id}-${subset}-${weight}-${style}.woff2`;
        const face = new FontFace(family, `url(${url}) format('woff2')`,
          { weight: String(weight), style, unicodeRange: ranges[subset] });
        jobs.push(face.load().catch(() => {
          if (subset === 'latin' && !optional) throw new Error(`Fontsource has no ${family} ${weight} ${style}`);
        }));
      }
    }
  }
  const ready = await Promise.all(jobs).catch((error) => { kitFail(error); throw error; });
  return ready.filter((face) => face && document.fonts.add(face)).length;
}

/** A loaded FontFace covers this family, weight and style (fonts.check() would
 *  also say yes for families nobody declared). */
function hasFace(family, weight, style) {
  for (const face of document.fonts) {
    if (face.status !== 'loaded' || face.style !== style) continue;
    if (face.family.replace(/^["']|["']$/g, '') !== family) continue;
    const [low, high = low] = face.weight.split(' ').map(Number);
    if (weight >= low && weight <= high) return true;
  }
  return false;
}

/** The files beyond latin `text` needs that `meta`'s family ships. */
function kitSubsetsFor(text, meta) {
  return [[/[Ā-˿ᴀ-ᶿḀ-ỿ†ℓⱠ-Ɀ꜠-ꟿ]/u, 'latin-ext'], [/[Ͱ-Ͽ]/u, 'greek']]
    .filter(([re, x]) => re.test(text) && meta?.subsets?.includes(x)).map(([, x]) => x);
}

/** Fontsource's id for a family: 'Source Serif 4' → 'source-serif-4'. */
function fontsourceId(family) { return family.toLowerCase().replace(/\s+/g, '-'); }

/** A package's folder at the one version @5 names now (#766). */
function fontsourceAt(id, u = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@`) {
  return (fontsourceAt.c ??= {})[id] ??= fetch(u + '5/package.json').then((r) => r.json())
    .then((p) => p.version || 5, () => 5).then((v) => `${u}${v}/`);
}

/** The family's Fontsource metadata (weights, styles, subsets), or null. */
function fontsourceMeta(family) {
  fontsourceMeta.cache ??= new Map();
  const id = fontsourceId(family);
  if (!fontsourceMeta.cache.has(id)) {
    fontsourceMeta.cache.set(id, fetch(`https://api.fontsource.org/v1/fonts/${id}`)
      .then((res) => (res.ok ? res.json() : null), () => null));
  }
  return fontsourceMeta.cache.get(id);
}

// ─── Kit · viewer v2 ── the same in every recipe · postext.dev/cookbook
/** The pages as spreads on a dark desk, page 1 alone, then verso | recto,
 *  each painted when it scrolls near. Other options go to renderPageToCanvas. */
function showPages(docs, { title, width = 460, ...render } = {}) {
  const root = viewer(title);
  const pages = [docs].flat().flatMap((doc) =>
    doc.pages.map((page) => ({ doc, page, n: (doc.pageIndexOffset ?? 0) + page.index })));
  const spreads = [];
  let verso = null;
  for (const p of pages) {
    if (p.n % 2 === 1) { if (verso) spreads.push([verso, null]); verso = p; }
    else { spreads.push([verso, p]); verso = null; }
  }
  if (verso) spreads.push([verso, null]);
  const density = Math.min(window.devicePixelRatio || 1, 2);
  showPages.painter?.disconnect();
  const painter = new IntersectionObserver((entries) => {
    for (const { isIntersecting, target } of entries) {
      if (!isIntersecting) continue;
      painter.unobserve(target);
      const { doc, page } = target.postext;
      renderPageToCanvas(page, doc, target, { ...render, scale: (width * density) / page.width });
    }
  }, { rootMargin: '800px' });
  showPages.painter = painter;
  root.replaceChildren(...spreads.map((pair) => {
    const spread = document.createElement('div');
    spread.className = 'pt-spread';
    for (const p of pair) {
      const figure = document.createElement('figure');
      if (p) {
        const label = p.page.pageLabel || String(p.n + 1);
        const canvas = document.createElement('canvas');
        canvas.postext = p;
        canvas.style.aspectRatio = `${p.page.width} / ${p.page.height}`;
        canvas.setAttribute('role', 'img');
        canvas.setAttribute('aria-label', `Page ${label}`);
        const folio = document.createElement('figcaption');
        folio.textContent = label;
        figure.append(canvas, folio);
        painter.observe(canvas);
      } else figure.className = 'pt-blank';
      spread.append(figure);
    }
    return spread;
  }));
  kitStatus(`${pages.length} ${pages.length === 1 ? 'page' : 'pages'}`);
  document.documentElement.dataset.postext = 'ready';
  return pages.length;
}

/** The desk, the bar and the error reporting, created once. */
function viewer(title) {
  if (!document.getElementById('pt-kit')) {
    document.head.insertAdjacentHTML('beforeend', `<style id="pt-kit">
      :root { color-scheme: dark; }
      body { margin: 0; background: #0e1014; color: #b9bcc4; font: 13px/1.45 system-ui, sans-serif; }
      #pt-bar { position: sticky; top: 0; z-index: 1; display: flex; flex-wrap: wrap; align-items: center;
        gap: 6px 16px; padding: 10px 16px; background: rgb(14 16 20 / .92); backdrop-filter: blur(6px);
        border-bottom: 1px solid #23262d; }
      #pt-bar strong { color: #f4f1ea; font-weight: 600; }
      #pt-actions { display: flex; gap: 12px; margin-left: auto; }
      #pt-actions a, #pt-actions button { color: #d8a21a; font: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
      #pages { display: grid; justify-items: center; gap: 48px; padding: 32px 16px 72px; }
      .pt-spread { display: flex; }
      .pt-spread figure { margin: 0; width: min(460px, 44vw); }
      .pt-spread canvas { display: block; width: 100%; background: #fff;
        box-shadow: 0 1px 2px rgb(0 0 0 / .5), 0 22px 44px -16px rgb(0 0 0 / .8); }
      .pt-spread figure:first-child canvas { box-shadow: inset -14px 0 14px -14px rgb(0 0 0 / .18), 0 1px 2px rgb(0 0 0 / .5), 0 22px 44px -16px rgb(0 0 0 / .8); }
      .pt-spread figcaption { margin-top: 10px; text-align: center; font: 600 10px/1 system-ui, sans-serif;
        letter-spacing: .18em; text-transform: uppercase; color: #6c7079; }
      .pt-blank { visibility: hidden; }
      @media (max-width: 760px) {
        .pt-spread { flex-direction: column; gap: 32px; }
        .pt-spread figure { width: min(460px, 92vw); }
        .pt-blank { display: none; }
      }
    </style>`);
    document.body.insertAdjacentHTML('afterbegin',
      '<header id="pt-bar"><strong id="pt-title"></strong><span id="pt-status" role="status"></span><span id="pt-actions"></span></header>');
    document.getElementById('pt-title').textContent = document.title || 'Postext';
    addEventListener('error', (event) => kitFail(event.error ?? event.message));
    addEventListener('unhandledrejection', (event) => kitFail(event.reason));
  }
  if (title) document.getElementById('pt-title').textContent = title;
  return document.getElementById('pages')
    ?? document.body.appendChild(Object.assign(document.createElement('main'), { id: 'pages' }));
}

function kitStatus(text) {
  viewer();
  document.getElementById('pt-status').textContent = text;
}

function kitFail(error) {
  document.documentElement.dataset.postext = 'error';
  kitStatus(`Error: ${error?.message ?? error}`);
}

// ─── Kit · images v3 ── recipes with pictures · postext.dev/cookbook
/** Registers a photo or PNG for the canvas and keeps its bytes for the PDF.
 *  fetch → ImageBitmap never taints the canvas (a plain cross-origin <img> would). */
async function loadImage(fileId, url) {
  const res = await fetch(url);
  if (!res.ok) throw new Error(`Image not found (${res.status}): ${url}`);
  const bytes = new Uint8Array(await res.arrayBuffer());
  registerResourceImage(fileId, await createImageBitmap(new Blob([bytes])));
  (loadImage.bytes ??= new Map()).set(fileId, bytes);
}

/** Registers SVG markup as a vector image, its fonts inside (inlineSvgFonts, ≥ 1.25).
 *  `options` go to registerResourceImage: { singleInk: true } tints it on the canvas. */
async function loadSvg(fileId, svg, options) {
  if (typeof inlineSvgFonts === 'function') svg = await inlineSvgFonts(svg, svgFaces);
  const img = new Image();
  img.src = `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`;
  await img.decode();
  registerResourceImage(fileId, img, options);
  (loadImage.bytes ??= new Map()).set(fileId, new TextEncoder().encode(svg));
}

/** A face's Fontsource files: nearest weight; latin + what the SVG sets. */
async function svgFaces(family, weight, style, { codePoints = [] } = {}) {
  const [id, m] = [fontsourceId(family), await fontsourceMeta(family)];
  const w = m?.weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a)) ?? weight;
  const s = m?.styles.includes(style) === false ? 'normal' : style;
  return Promise.all(['latin', ...kitSubsetsFor(String.fromCodePoint(...codePoints), m)].map(async (x) => new Uint8Array(
    await (await fetch(`${await fontsourceAt(id)}files/${id}-${x}-${w}-${s}.woff2`)).arrayBuffer())));
}

/** renderToPdf({ resourceBytes: imageBytes }) */
function imageBytes(fileId) { return loadImage.bytes?.get(fileId); }

/** renderToHtml({ resourceImageUrl: imageUrl }) */
function imageUrl(fileId) {
  const bytes = imageBytes(fileId);
  if (!bytes) return undefined;
  imageUrl.urls ??= new Map();
  if (!imageUrl.urls.has(fileId)) {
    const type = /\.svg$/i.test(fileId) ? 'image/svg+xml' : /\.png$/i.test(fileId) ? 'image/png' : 'image/jpeg';
    imageUrl.urls.set(fileId, URL.createObjectURL(new Blob([bytes], { type })));
  }
  return imageUrl.urls.get(fileId);
}

// ─── /Kit ───────────────────────────────────────────────────────────────────────