# Una tira diària i mitja pàgina de diumenge al diari

> El suplement de còmics d’un diari: mitja pàgina de diumenge composta al text de la portada i una tira diària flotada al peu d’una pàgina a quatre columnes.

- Versió HTML: https://postext.dev/ca/cookbook/newspaper-daily-strip
- Recepta Núm. 146 · Còmic i manga · Nivell 3 (Avançat) · Sortides: Canvas, PDF
- Gèneres: Còmics, Diaris i butlletins
- Requereix postext ≥ 1.21.0, postext-pdf ≥ 1.21.0 · provada amb 1.21.0, postext-pdf 1.21.0 el 2026-10-07
- Pàgines: [1](https://postext.dev/cookbook/newspaper-daily-strip/ca/p01.webp?v=9ba84cb1), [2](https://postext.dev/cookbook/newspaper-daily-strip/ca/p02.webp?v=9ba84cb1)
- PDF: https://postext.dev/cookbook/newspaper-daily-strip/ca/newspaper-daily-strip.pdf?v=9ba84cb1
- Obre al Sandbox: https://postext.dev/ca/sandbox#recipe=newspaper-daily-strip&lang=ca (.postext: https://postext.dev/cookbook/newspaper-daily-strip/ca/newspaper-daily-strip.postext)
- Última actualització: 2026-10-07
- Altres idiomes: [en](https://postext.dev/en/cookbook/newspaper-daily-strip.md), [es](https://postext.dev/es/cookbook/newspaper-daily-strip.md), [pt](https://postext.dev/pt/cookbook/newspaper-daily-strip.md), [zh](https://postext.dev/zh/cookbook/newspaper-daily-strip.md), [ja](https://postext.dev/ja/cookbook/newspaper-daily-strip.md), [ar](https://postext.dev/ar/cookbook/newspaper-daily-strip.md)

## En poques paraules

Dues pàgines de la secció de còmics d’un diari: un còmic gran en color a la portada i, a dins, una entrevista amb la dibuixant a quatre columnes i la tira diària de quatre vinyetes a baix.

## Què compondràs

El suplement de còmics d’un diari de cap de setmana, *El Despatx de Corrington*, plegat a 230 × 310 mm. La portada porta la mitja pàgina de diumenge d’*En Pip i l’Otto*, un pingüí i una morsa que tenen una fleca sobre un glaç, amb el sumari a sota. A dins, una entrevista amb la dibuixant ocupa quatre columnes, amb cartes de lectors i un anunci, i la tira diària de la setmana, quatre vinyetes quadrades, corre al peu de la pàgina. Les dues historietes són blocs `:::strip` del text del diari, i el suplement surt en sis idiomes.

**Aquesta recepta respon a:**

- Com poso una tira còmica en una pàgina de diari, a l’amplada de les columnes del text?

## La resposta curta

```js
// script.js, línies 56–77
// In the Markdown each strip is a fenced block, where the paper wants it:
//   :::strip{split="55 / * [40 | *]" height=210mm}   the Sunday half page, on the cover
//   :::strip{split="* | * | * | *" span=page placement=bottom}   the daily: four square panels
// On the one-column cover the Sunday strip is set in the text, 210 mm deep. Inside, the daily
// floats to the foot of the page, as wide as its four columns, and the columns of the article
// end level above it. A strip never splits; one that does not fit moves to the next page.
// The panels, gutters and balloons come from the comics settings, as on a comic page.
const comics = {
  gutter: { horizontal: mm(3), vertical: mm(3) },
  panel: { borderWidth: pt(0.75), borderColor: col('ink'), background: col('paper') },
  lettering: { fontFamily: LETTERING, fontSize: pt(7.5), color: col('ink'), inset: mm(1) },
  balloonStyles: [
    { id: 'speech', fill: col('paper'), stroke: col('ink') },
    { id: 'whisper', fill: col('paper'), stroke: col('ink') },
    { id: 'shout', fill: col('paper'), stroke: col('ink') },
    { id: 'caption', fill: col('accent'), stroke: col('accent'), color: col('paper'),
      fontFamily: LABEL, bold: true },
    { id: 'sfx', fontFamily: SFX, color: col('accent'), haloColor: col('paper') },
  ],
};
const layout = { layoutType: 'multiple', columnCount: 4, gutterWidth: mm(GUTTER),
  columnRule: { enabled: true, color: col('rule'), lineWidth: pt(0.4) } };
```

## Ingredients

**Ensenya**

- [Tires còmiques en el text](https://postext.dev/ca/docs/comics.md#tires): Un bloc :::strip compon vinyetes com un bloc del text, de l'amplada d'una columna o de la pàgina, amb una alçada o una proporció: la tira diària d'un diari o un còmic dins d'un llibre.

**També fa servir**

- [Tres o més columnes](https://postext.dev/ca/docs/configuration.md#tipus-de-disposició)
- [Filet de columna](https://postext.dev/ca/docs/configuration.md#filet-de-columna)
- [Vores i separacions de les vinyetes](https://postext.dev/ca/docs/comics.md#vinyetes-i-imatges)
- [Personatges i àncores](https://postext.dev/ca/docs/comics.md#personatges-i-àncores)
- [Pàgines de còmic](https://postext.dev/ca/docs/comics.md#pàgines-de-còmic)
- [Retolació de còmic](https://postext.dev/ca/docs/comics.md#retolació)
- [Retolar en altres llengües](https://postext.dev/ca/docs/comics.md#retolació)
- [Estils de bafarada](https://postext.dev/ca/docs/comics.md#estils-de-bafarada)
- [Obertures dissenyades](https://postext.dev/ca/docs/configuration.md#span-i-disseny-avançat)
- [Capçaleres i folis](https://postext.dev/ca/docs/configuration.md#capçaleres-i-peus)
- [Requadres](https://postext.dev/ca/docs/configuration.md#estils-davís)
- [Estils de paràgraf](https://postext.dev/ca/docs/configuration.md#estils-de-paràgraf)
- [Paleta de color semàntica](https://postext.dev/ca/docs/configuration.md#paleta-de-colors)
- [Exportació a PDF](https://postext.dev/ca/docs/configuration.md#generació-de-pdf)
- [Geometria per secció](https://postext.dev/ca/docs/configuration.md#estils-dencapçalament)
- [Col·locació de figures](https://postext.dev/ca/docs/document-format.md#collocació)
- [Requadres que es parteixen o no](https://postext.dev/ca/docs/configuration.md#el-contenidor-callout)
- [Imatge i retall de la vinyeta](https://postext.dev/ca/docs/comics.md#vinyetes-i-imatges)
- [Atributs de títol](https://postext.dev/ca/docs/document-format.md#atributs-dencapçalament)
- [Estils de títol](https://postext.dev/ca/docs/configuration.md#estils-dencapçalament)
- [Banda de capítol d'amplada completa](https://postext.dev/ca/docs/configuration.md#span-i-disseny-avançat)
- [Color del paper](https://postext.dev/ca/docs/configuration.md#pàgina)
- [Fonts incrustades al PDF](https://postext.dev/ca/docs/configuration.md#per-què-un-proveïdor-de-fonts)
- [Figures i taules com a recursos](https://postext.dev/ca/docs/document-format.md#recursos)
- [Onomatopeies](https://postext.dev/ca/docs/comics.md#estils-de-bafarada)

**La configuració d'un cop d'ull**

- [`bodyText`](https://postext.dev/ca/docs/configuration.md#text-de-cos), [`calloutStyles`](https://postext.dev/ca/docs/configuration.md#estils-davís), [`colorPalette`](https://postext.dev/ca/docs/configuration.md#paleta-de-colors), [`comics`](https://postext.dev/ca/docs/comics.md#pàgines-de-còmic), [`footer`](https://postext.dev/ca/docs/configuration.md#capçaleres-i-peus), [`header`](https://postext.dev/ca/docs/configuration.md#capçaleres-i-peus), [`headingStyles`](https://postext.dev/ca/docs/configuration.md#estils-dencapçalament), [`headings`](https://postext.dev/ca/docs/configuration.md#encapçalaments), [`layout`](https://postext.dev/ca/docs/configuration.md#disposició), [`locale`](https://postext.dev/ca/docs/configuration.md#partició-de-mots), [`page`](https://postext.dev/ca/docs/configuration.md#pàgina), [`paragraphStyles`](https://postext.dev/ca/docs/configuration.md#estils-de-paràgraf)

**API**

- [`buildDocument`](https://postext.dev/ca/docs/configuration.md#construir-un-document), [`clearMeasurementCache`](https://postext.dev/ca/docs/configuration.md#memòria-cau-de-mesures), [`decompressWoff2`](https://postext.dev/ca/docs/configuration.md#proveïdor-de-fonts-al-navegador-fontsource--woff2), [`registerResourceImage`](https://postext.dev/ca/docs/architecture.md#superfície-dapi), [`renderPageToCanvas`](https://postext.dev/ca/docs/configuration.md#renderitzar-una-pàgina-a-un-bitmap), [`renderToPdf`](https://postext.dev/ca/docs/configuration.md#generació-de-pdf)

**Tipus de lletra**

- Newsreader (OFL-1.1), Archivo Narrow (OFL-1.1), Comic Neue (OFL-1.1), Bangers (OFL-1.1), Noto Serif SC (OFL-1.1), Noto Sans SC (OFL-1.1), ZCOOL KuaiLe (OFL-1.1), ZCOOL QingKe HuangYou (OFL-1.1), Noto Serif JP (OFL-1.1), Noto Sans JP (OFL-1.1), Zen Antique (OFL-1.1), Dela Gothic One (OFL-1.1), Noto Naskh Arabic (OFL-1.1), Noto Kufi Arabic (OFL-1.1), Playpen Sans Arabic (OFL-1.1), Lalezar (OFL-1.1)

## Elaboració

### 1 · Escriu la tira on la vol el diari

El codi és [la resposta curta](https://postext.dev/ca/cookbook/newspaper-daily-strip.md#la-resposta-curta) de dalt. Un `:::strip` té el cos d’una pàgina de còmic (el seu `split`, les línies `::panel` i el guió), però és un bloc del text ([tires](https://postext.dev/ca/docs/comics.md#tires)). A la portada, a una columna, la tira de diumenge es compon on és escrita, amb 210 mm d’alt, i el sumari va al darrere. La seva divisió, `55 / * [40 | *]`, dona a l’escena ampla de la pesca una tira pròpia i deixa a baix una fila per als dos acudits. Una tira no es parteix mai: si no hi cap, passa sencera a la pàgina següent.

![Pàgina 1. La portada del suplement: la capçalera Còmics en vermell, la mitja pàgina de diumenge (en Pip i l’Otto pescant en un glaç, el peix minúscul d’en Pip, l’Otto traient una bota) i tres línies de sumari.](https://postext.dev/cookbook/newspaper-daily-strip/ca/p01.webp?v=9ba84cb1)

*La portada: la mitja pàgina de diumenge composta al text i el sumari a sota.*

### 2 · Fes flotar la tira diària sobre les columnes

La pàgina interior s’obre amb un H1 l’estil de títol del qual passa la secció a quatre columnes. La tira diària va just després, amb `span=page placement=bottom`: flota al peu de la pàgina amb l’amplada de les quatre columnes, i les columnes de l’article acaben igualades a sobre. Sense `height` ni `aspect`, una tira pren la forma que fa quadrades les seves vinyetes, aquí quatre a un. Amb `placement=top` obriria la pàgina següent, perquè un flotant no puja mai per sobre del punt on s’escriu.

### 3 · Ajusta cada imatge a la seva vinyeta

```js
// script.js, línies 253–332
// From the art manifest; fractions of each picture, the same in every language.
const face = (x, y, width, height) => ({ x, y, width, height });
const ART = {
  po1: { width: 1024, height: 1024, safeArea: face(0.11, 0.22, 0.71, 0.45),
    anchors: [{ id: 'pip', x: 0.27, y: 0.58, face: face(0.11, 0.44, 0.22, 0.2) },
      { id: 'otto', x: 0.67, y: 0.37, face: face(0.56, 0.23, 0.24, 0.22) }] },
  po2: { width: 1024, height: 1024, safeArea: face(0.07, 0.14, 0.79, 0.56),
    anchors: [{ id: 'pip', x: 0.23, y: 0.62, face: face(0.07, 0.5, 0.22, 0.18) },
      { id: 'otto', x: 0.75, y: 0.31, face: face(0.52, 0.14, 0.33, 0.22) }],
    avoid: [face(0.28, 0.17, 0.38, 0.39)] },
  po3: { width: 1024, height: 1024, safeArea: face(0.03, 0.18, 0.72, 0.56),
    anchors: [{ id: 'pip', x: 0.275, y: 0.36, face: face(0.1, 0.19, 0.25, 0.21) }],
    avoid: [face(0.34, 0.41, 0.64, 0.41)] },
  po4: { width: 1024, height: 1024, safeArea: face(0.07, 0.19, 0.84, 0.53),
    anchors: [{ id: 'pip', x: 0.23, y: 0.61, face: face(0.07, 0.48, 0.22, 0.18) },
      { id: 'otto', x: 0.69, y: 0.36, face: face(0.53, 0.19, 0.39, 0.23) }],
    avoid: [face(0.31, 0.63, 0.05, 0.08), face(0.39, 0.32, 0.29, 0.18)] },
  po5: { width: 1400, height: 600, safeArea: face(0.16, 0.17, 0.6, 0.66),
    anchors: [{ id: 'pip', x: 0.345, y: 0.53, face: face(0.29, 0.4, 0.09, 0.18) },
      { id: 'otto', x: 0.625, y: 0.33, face: face(0.58, 0.17, 0.12, 0.23) }] },
  po6: { width: 1152, height: 1152, safeArea: face(0.3, 0.21, 0.43, 0.35),
    anchors: [{ id: 'pip', x: 0.46, y: 0.39, face: face(0.35, 0.25, 0.2, 0.18) },
      { id: 'fish', x: 0.66, y: 0.46, face: face(0.64, 0.41, 0.07, 0.12) }] },
  po7: { width: 1400, height: 933, safeArea: face(0.07, 0.15, 0.81, 0.65),
    anchors: [{ id: 'pip', x: 0.195, y: 0.64, face: face(0.1, 0.56, 0.15, 0.14) },
      { id: 'otto', x: 0.795, y: 0.35, face: face(0.7, 0.18, 0.18, 0.22) },
      { id: 'sfx', x: 0.62, y: 0.7 }],
    avoid: [face(0.44, 0.3, 0.15, 0.32)] },
};
const ALT = {
  po1: t({ en: 'Pip the penguin waddles into Otto the walrus’s tiny bakery, waving.',
    es: 'Pip, el pingüino, entra saludando en la pequeña panadería de Otto, la morsa.',
    ca: 'En Pip, el pingüí, entra saludant a la petita fleca de l’Otto, la morsa.',
    zh: '企鹅皮普摇摇摆摆走进海象奥托的小面包店，挥着手。',
    ar: 'البطريق بيب يدخل مخبز الفظّ أوتو الصغير وهو يلوّح.',
    ja: 'ペンギンのピップが手を振りながら、セイウチのオットーの小さなパン屋に入ってくる。',
    pt: 'O pinguim Pip entra acenando na padariazinha da morsa Otto.' }),
  po2: t({ en: 'Otto proudly holds up a croissant as big as Pip.',
    es: 'Otto enseña orgulloso un cruasán tan grande como Pip.',
    ca: 'L’Otto ensenya orgullós un croissant tan gran com en Pip.',
    zh: '奥托得意地举起一个和皮普一样大的羊角面包。',
    ar: 'أوتو يرفع بفخر كرواسونًا بحجم بيب.',
    ja: 'オットーが、ピップと同じくらい大きなクロワッサンを得意げに持ち上げる。',
    pt: 'Otto ergue, todo orgulhoso, um croissant do tamanho do Pip.' }),
  po3: t({ en: 'Pip stands on the counter next to the giant croissant, scratching his head.',
    es: 'Pip, de pie en el mostrador junto al cruasán gigante, se rasca la cabeza.',
    ca: 'En Pip, dret al taulell al costat del croissant gegant, es grata el cap.',
    zh: '皮普站在柜台上，挨着巨大的羊角面包挠头。',
    ar: 'بيب واقف على المنضدة بجانب الكرواسون العملاق يحكّ رأسه.',
    ja: 'ピップがカウンターの巨大なクロワッサンの横に立ち、頭をかいている。',
    pt: 'Pip, de pé no balcão ao lado do croissant gigante, coça a cabeça.' }),
  po4: t({ en: 'Otto munches the big half of the croissant; Pip holds a tiny end piece.',
    es: 'Otto se come la mitad grande del cruasán; Pip sostiene una punta diminuta.',
    ca: 'L’Otto es menja la meitat gran del croissant; en Pip aguanta una punta minúscula.',
    zh: '奥托大口吃着大半个羊角面包；皮普手里拿着一小截面包尖。',
    ar: 'أوتو يلتهم النصف الكبير من الكرواسون، وبيب يمسك طرفًا صغيرًا.',
    ja: 'オットーがクロワッサンの大きいほうをほおばり、ピップは小さな端っこを持っている。',
    pt: 'Otto devora a metade grande do croissant; Pip segura uma pontinha.' }),
  po5: t({ en: 'Pip and Otto fish through a hole in an ice floe beside a tiny bakery hut.',
    es: 'Pip y Otto pescan por un agujero en un témpano, junto a una caseta de panadería.',
    ca: 'En Pip i l’Otto pesquen per un forat en un glaç, al costat d’una caseta de fleca.',
    zh: '皮普和奥托在浮冰的冰洞里钓鱼，旁边是一间小面包屋。',
    ar: 'بيب وأوتو يصطادان من ثقب في جليد طافٍ بجانب كوخ مخبز صغير.',
    ja: '流氷の穴でピップとオットーが釣りをしている。そばに小さなパン屋の小屋。',
    pt: 'Pip e Otto pescam num buraco do bloco de gelo, ao lado de uma padariazinha.' }),
  po6: t({ en: 'Pip proudly holds up a tiny, unimpressed fish.',
    es: 'Pip levanta orgulloso un pez diminuto y nada impresionado.',
    ca: 'En Pip aixeca orgullós un peix minúscul i gens impressionat.',
    zh: '皮普得意地举起一条小小的、一脸不屑的鱼。',
    ar: 'بيب يرفع بفخر سمكة صغيرة لا يبدو عليها أي إعجاب.',
    ja: 'ピップが、少しもうれしそうでない小さな魚を得意げに持ち上げる。',
    pt: 'Pip ergue, todo orgulhoso, um peixinho nada impressionado.' }),
  po7: t({ en: 'Otto reels in a soggy boot; Pip has fallen on his back laughing.',
    es: 'Otto saca del agua una bota empapada; Pip se ha caído de espaldas de la risa.',
    ca: 'L’Otto treu de l’aigua una bota xopa; en Pip ha caigut d’esquena de riure.',
    zh: '奥托钓上来一只湿透的靴子；皮普笑得仰面摔倒。',
    ar: 'أوتو يسحب حذاءً مبتلًا، وبيب سقط على ظهره من الضحك.',
    ja: 'オットーがずぶぬれの長靴を釣り上げ、ピップは笑いころげてあおむけに倒れている。',
    pt: 'Otto puxa uma bota encharcada; Pip caiu de costas de tanto rir.' }),
};
```

Les imatges es van dibuixar quadrades o apaïsades, i les cel·les de la divisió de diumenge no ho són: l’acudit de la bota cau en una cel·la de 112 × 88 mm. Cada zona segura es retalla al que necessita l’acudit, en Pip, l’Otto i la bota, perquè l’enquadrament no deixi mai bandes ([vinyetes i imatges](https://postext.dev/ca/docs/comics.md#vinyetes-i-imatges)).

### 4 · Imprimeix la mateixa pàgina en sis diaris

```js
// script.js, línies 35–46
const [TEXT, LABEL, LETTERING, SFX] = t({
  en: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  es: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  ca: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  pt: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  zh: ['Noto Serif SC', 'Noto Sans SC', 'ZCOOL KuaiLe', 'ZCOOL QingKe HuangYou'],
  ja: ['Noto Serif JP', 'Noto Sans JP', 'Zen Antique', 'Dela Gothic One'],
  ar: ['Noto Naskh Arabic', 'Noto Kufi Arabic', 'Playpen Sans Arabic', 'Lalezar'],
});
const CJK = LANG === 'zh' || LANG === 'ja';
// Design text aligns to physical sides: an Arabic page starts on the right.
const [START, END] = LANG === 'ar' ? ['right', 'left'] : ['left', 'right'];
```

Cada edició compon el diari amb lletres per a la seva escriptura i retola les tires amb les seves pròpies lletres de còmic. Les bafarades japoneses van en vertical. Les edicions japonesa i àrab llegeixen les tires de dreta a esquerra, així que les vinyetes de cada fila canvien de lloc; l’àrab, composta de dreta a esquerra, inverteix a més les columnes de la pàgina. Les imatges i la divisió no canvien; només canvia `content.<lang>.md` ([sentit de lectura](https://postext.dev/ca/docs/comics.md#sentit-de-lectura)).

## La recepta completa

Un sol fitxer, compost a partir de la carpeta de la recepta amb el text d'exemple i el kit comú del Receptari ja inclosos; construeix la seva pròpia pàgina. Per executar-lo, posa'l en un `<script type="module">` d'una pàgina buida o enganxa'l al tauler JS d'un pen nou de CodePen (com a mòdul). Importa postext des d'esm.sh, així que no cal instal·lar ni compilar res.

- Carpeta de la recepta: https://github.com/drnachio/postext/tree/main/cookbook/newspaper-daily-strip

### script.js

```js
// ═══ Postext Cookbook · Nº 146 · A daily strip and a Sunday half page in the newspaper ═══
// https://postext.dev/en/cookbook/newspaper-daily-strip
// Code: MIT · Text: original (CC BY 4.0) · Pictures: generated with diffusion models
// Fonts: Newsreader, Archivo Narrow, Comic Neue, Bangers and 12 more (OFL) · Needs postext ≥ 1.21.0
//
// Two pages of a newspaper's pull-out comics section: a four-panel daily strip across the head
// of a four-column page, and a Sunday half page with its own panel grid. Both are :::strip blocks
// in the text: the columns flow around them as they flow around a page-wide figure.
import {
  buildDocument, renderPageToCanvas, clearMeasurementCache, registerResourceImage,
} from 'https://esm.sh/postext';
import { renderToPdf, decompressWoff2 } from 'https://esm.sh/postext-pdf';

const LANG = 'ca'; // @lang: the sample's language: 'en' | 'es' | 'ca' | 'zh' | 'ar' | 'ja' | 'pt'
const RECIPE = 'newspaper-daily-strip';

// ─── 1 · Design ─────────────────────────────────────────────────────────────
// #region palette: newsprint, ink and the paper's red
const palette = {
  ink: '#16181b', // text, rules, panel borders and the lettering
  paper: '#f6f3ec', // newsprint
  accent: '#b3261e', // section flags, kickers and the sound effects
  tint: '#e9e4d8', // the advert's box
  rule: '#8f9196', // the column rules
  muted: '#575b61', // bylines and the folio line
};
const col = (id) => ({ hex: palette[id], model: 'hex', paletteId: id });
const colorPalette = [
  ...Object.entries(palette).map(([id, hex]) => ({ id, name: id, value: { hex, model: 'hex' } })),
  { id: 'main-color', name: 'ink (defaults)', value: { hex: palette.ink, model: 'hex' } },
];
// #endregion

// #region editions: the newspaper's text, label and lettering faces in each script
const [TEXT, LABEL, LETTERING, SFX] = t({
  en: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  es: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  ca: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  pt: ['Newsreader', 'Archivo Narrow', 'Comic Neue', 'Bangers'],
  zh: ['Noto Serif SC', 'Noto Sans SC', 'ZCOOL KuaiLe', 'ZCOOL QingKe HuangYou'],
  ja: ['Noto Serif JP', 'Noto Sans JP', 'Zen Antique', 'Dela Gothic One'],
  ar: ['Noto Naskh Arabic', 'Noto Kufi Arabic', 'Playpen Sans Arabic', 'Lalezar'],
});
const CJK = LANG === 'zh' || LANG === 'ja';
// Design text aligns to physical sides: an Arabic page starts on the right.
const [START, END] = LANG === 'ar' ? ['right', 'left'] : ['left', 'right'];
// #endregion
const MARGIN = { top: 31, bottom: 14, side: 12 }; // mm: a newspaper's narrow, even margins
const GUTTER = 4; // mm: four columns of 48.5 mm on the 206 mm text width
const LEAD = CJK ? 15 : LANG === 'ar' ? 16 : 12.2; // pt: the baseline grid
const at = (to, edge, x = 0, y = 0) => ({ anchor: { to, edge }, offset: { x: mm(x), y: mm(y) } });
const label = (size, look = {}) => ({ fontFamily: LABEL, fontSize: pt(size), fontWeight: 700,
  color: col('ink'), ...look });

// #region answer: a page-wide daily strip and a Sunday half page, set in the columns
// In the Markdown each strip is a fenced block, where the paper wants it:
//   :::strip{split="55 / * [40 | *]" height=210mm}   the Sunday half page, on the cover
//   :::strip{split="* | * | * | *" span=page placement=bottom}   the daily: four square panels
// On the one-column cover the Sunday strip is set in the text, 210 mm deep. Inside, the daily
// floats to the foot of the page, as wide as its four columns, and the columns of the article
// end level above it. A strip never splits; one that does not fit moves to the next page.
// The panels, gutters and balloons come from the comics settings, as on a comic page.
const comics = {
  gutter: { horizontal: mm(3), vertical: mm(3) },
  panel: { borderWidth: pt(0.75), borderColor: col('ink'), background: col('paper') },
  lettering: { fontFamily: LETTERING, fontSize: pt(7.5), color: col('ink'), inset: mm(1) },
  balloonStyles: [
    { id: 'speech', fill: col('paper'), stroke: col('ink') },
    { id: 'whisper', fill: col('paper'), stroke: col('ink') },
    { id: 'shout', fill: col('paper'), stroke: col('ink') },
    { id: 'caption', fill: col('accent'), stroke: col('accent'), color: col('paper'),
      fontFamily: LABEL, bold: true },
    { id: 'sfx', fontFamily: SFX, color: col('accent'), haloColor: col('paper') },
  ],
};
const layout = { layoutType: 'multiple', columnCount: 4, gutterWidth: mm(GUTTER),
  columnRule: { enabled: true, color: col('rule'), lineWidth: pt(0.4) } };
// #endregion

// The section flag heads every page of the pull-out: its name over a 3 pt bar, the folio line
// above it. It lives in the header, so the cover's strip starts right under it, and a float
// written after an opener can still take that page's foot (gotcha: top-float-next-page).
const WIDTH = 230 - 2 * MARGIN.side; // mm: the text width
const SECTION = t({ en: 'Funnies', es: 'Tebeos', ca: 'Còmics', zh: '漫画版', ar: 'صفحة الكوميكس',
  ja: '漫画面', pt: 'Quadrinhos' });
const across = (y) => ({ ...at('page', 'top-left', MARGIN.side, y), size: { width: mm(WIDTH) } });
const header = { elements: [
  { kind: 'text', id: 'folio', content: '{pageNumber}  ·  {title}  ·  {publishDate}',
    ...label(8, { color: col('muted') }), align: START, placement: across(8) },
  { kind: 'text', id: 'flag', content: SECTION, ...label(30, { color: col('accent') }),
    lineHeight: 1, align: START, placement: across(12.5) },
  { kind: 'text', id: 'tag', content: '{subtitle}', ...label(9, { color: col('muted') }),
    align: END, placement: across(19.5) },
  { kind: 'rule', id: 'bar', thickness: pt(3), color: col('ink'), placement: across(24.5) },
] };

const config = () => ({ // a factory: the engine caches resolved configs per object
  locale: t({ en: 'en-gb', es: 'es', ca: 'ca', ja: 'ja', zh: 'zh-Hans', ar: 'ar',
    pt: 'pt-BR' }),
  colorPalette, comics,
  layout: { layoutType: 'single' }, // the cover; the inside page is a section in four columns
  // The pull-out is a tabloid sheet folded once more: 230 × 310 mm.
  page: { sizePreset: 'custom', width: mm(230), height: mm(310), dpi: 150,
    backgroundColor: col('paper'),
    margins: { top: mm(MARGIN.top), bottom: mm(MARGIN.bottom), left: mm(MARGIN.side),
      right: mm(MARGIN.side) } },
  bodyText: { fontFamily: TEXT, fontSize: pt(CJK ? 8.5 : 9), lineHeight: pt(LEAD),
    color: col('ink'), boldColor: col('ink'), italicColor: col('ink'), referenceColor: col('ink'),
    textAlign: 'justify', firstLineIndent: CJK ? em(1) : mm(3), indentAfterHeading: false,
    hyphenation: { enabled: true }, optimalLineBreaking: true,
    avoidWidows: true, avoidOrphans: true, avoidRunts: true },
  headings: { fontFamily: TEXT, fontWeight: 700, color: col('ink'),
    levels: [
      // Restated: any headings object drops the H1 break (gotcha: headings-drop-h1-break).
      { level: 1, span: 'page', fontSize: pt(28), lineHeight: pt(32), marginTop: pt(0),
        marginBottom: pt(LEAD * 0.5), breakBefore: { enabled: true, parity: 'any' } },
      { level: 2, fontFamily: LABEL, fontSize: pt(12), lineHeight: pt(LEAD),
        marginTop: pt(LEAD), marginBottom: pt(0) },
      { level: 3, fontFamily: LABEL, fontSize: pt(9.5), lineHeight: pt(LEAD),
        marginTop: pt(LEAD), marginBottom: pt(0) },
    ] },
  // An H1 opens the inside page, and its style turns that page into four columns.
  headingStyles: [{ id: 'inside', layout }],
  paragraphStyles: [
    { id: 'contents', fontFamily: LABEL, fontSize: pt(14), lineHeight: pt(LEAD * 1.5),
      textAlign: 'left', firstLineIndent: pt(0), spaceBetween: pt(LEAD * 0.5) },
    { id: 'byline', ...label(8.5, { color: col('muted') }), textAlign: 'left',
      firstLineIndent: pt(0), marginBottom: pt(LEAD * 0.5) },
    { id: 'flush', firstLineIndent: pt(0), textAlign: 'left' }, // letters, ragged
    { id: 'imprint', ...label(7, { color: col('muted'), fontWeight: 400 }), textAlign: 'left',
      firstLineIndent: pt(0), marginTop: pt(LEAD) },
  ],
  calloutStyles: [{ id: 'ad', background: col('tint'), keepTogether: true,
    stripe: { enabled: true, side: 'top', width: pt(2.5), color: col('accent') },
    padding: { top: mm(3), right: mm(4), bottom: mm(4), left: mm(4) },
    titleStyle: { ...label(7.5, { color: col('muted') }), gap: mm(2) }, // "Advertisement"
    body: { fontFamily: LABEL, fontSize: pt(11), lineHeight: pt(LEAD * 1.2), textAlign: 'left',
      firstLineIndent: pt(0), paragraphSpacing: true } }],
  header,
  footer: { elements: [] },
});

// ─── 2 · Content ────────────────────────────────────────────────────────────
const markdown = String.raw`---
title: "El Despatx de Corrington"
subtitle: "En Pip i l’Otto fan deu anys · Cartes al glaç"
publishDate: "Dissabte, 17 d’octubre de 2026"
---

:::strip{split="55 / * [40 | *]" height=210mm}
::panel{art=po5}
caption{at=top-start}: EN PIP I L’OTTO · Diumenge al glaç
pip: Otto, tens una fleca. Per què pesques?
otto: El pa no es resisteix mai.
::panel{art=po6}
pip: Mira! El sopar!
fish{whisper}: Torna’m a l’aigua.
::panel{art=po7}
sfx{at="62% 72%"}: XAF!
pip{shout}: HA! És de la teva talla!
otto: Mmm. I gairebé nova.
:::

:::paragraphs{style="contents"}
**A dins:** En Pip i l’Otto fan deu anys. Ines Barlow parla d’una dècada de croissants, peixos i un corbatí.

**Cartes al glaç:** les vostres preguntes, les respostes de l’Otto. Totes dues a la pàgina 2.

**Diumenge que ve:** l’Otto aprèn a patinar.
:::

# Deu hiverns al glaç {style="inside"}

:::strip{split="* | * | * | *" span=page placement=bottom}
::panel{art=po1}
pip: Bon dia, Otto! Un croissant, si us plau.
otto: Marxant!
::panel{art=po2}
otto: Acabat de sortir del forn!
::panel{art=po3}
pip: No en tens un de més petit?
::panel{art=po4}
sfx: NYAM
otto: Té. Més petit.
:::

:::paragraphs{style="byline"}
Per Ruth Okafor · Cultura
:::

Ines Barlow dibuixa un pingüí i una morsa cada matí de dilluns a divendres a la taula de la cuina de casa seva, a Saltmarsh Lane, i ja fa deu anys que ho fa. *En Pip i l’Otto* va sortir per primer cop al Despatx el 17 d’octubre de 2016, encaixada sota els mots encreuats. Avui es publica en onze diaris i en sis idiomes, i encara cap en quatre vinyetes quadrades.

«La regla és que l’acudit ha de caure a la quarta vinyeta, ni una abans», diu Barlow. «Si l’Otto fa gràcia a la segona, he llençat la tira». En Pip és petit, educat i sempre té gana. L’Otto porta una fleca sobre un glaç, va a treballar amb corbatí i mai no ha donat una resposta directa. Els lectors escriuen a tots dos, tot i que la majoria de les cartes són per a l’Otto.

Barlow va créixer a sobre de la fleca dels seus pares a Harrow Road, i d’aquí surten els croissants. El pingüí va arribar més tard, d’una postal que la seva àvia li va enviar des de Ciutat del Cap. «Vaig dibuixar en Pip al revers d’un talonari de comandes quan tenia nou anys. Ja duia la bufanda. L’Otto em va costar vint anys més».

Va enviar les sis primeres tires al Despatx l’estiu del 2016, amb una carta de presentació d’una sola línia. El responsable de còmics d’aleshores, Martin Fry, les va publicar a prova durant un mes. La prova no s’ha acabat. Fry, ja jubilat, encara rep la tira per correu un dia abans. «M’avisa quan un acudit fluixeja», diu Barlow. «Gairebé sempre té raó».

La feina comença el dilluns amb cinc esbossos a llapis en fulls DIN A4, quatre requadres per full. El dimecres ja estan entintats i acolorits. Els dibuixos arriben al diari sense cap paraula; el text va a part, en un guió breu: qui parla, a quina vinyeta i què diu. Cada onomatopeia té la seva pròpia línia.

El costum va començar amb l’edició francesa, el 2019. «Retolar una tira dues vegades a mà era una setmana de feina», explica. «Ara cada diari compon el text en el seu idioma i les bafarades es dibuixen al voltant». Els diaris catalans reben «Acabat de sortir del forn!»; l’edició japonesa compon les bafarades en columnes verticals i, com l’àrab, llegeix les vinyetes de dreta a esquerra. Els dibuixos no canvien mai.

La tira del diumenge és l’excepció a la regla de les quatre vinyetes. Ocupa mitja pàgina, en color, i Barlow la tracta com un conte curt: tres vinyetes, un acudit més lent i gairebé sempre un peix. La d’aquesta setmana és a la portada.

Què els espera ara? «L’Otto aprendrà a patinar», diu Barlow. «No li agradarà».

## En Pip i l’Otto en xifres

:::paragraphs{style="flush"}
**2.516** tires diàries des d’octubre de 2016. **520** mitges pàgines de diumenge. **11** diaris, **6** idiomes. **1** corbatí.
:::

## Cartes al glaç

:::paragraphs{style="flush"}
**Benvolgut Otto:** el meu fill vol saber per a què necessita una morsa un corbatí. —*Grace, Abbotsford*
:::

**Respon l’Otto:** Un forner que no s’arregla per treballar fa un pa sense gràcia.

:::paragraphs{style="flush"}
**Benvolgut Pip:** t’has acabat mai un croissant sencer? —*Tomasz, 8 anys, Riverside*
:::

**Respon en Pip:** Una vegada. Vaig trigar dos dies i l’Otto me’l va cobrar dues vegades.

:::paragraphs{style="flush"}
**Benvolgut Otto:** la fleca del glaç existeix de debò? M’agradaria visitar-la. —*Sra. D. Keane, Harrow*
:::

**Respon l’Otto:** Es va movent. Porti un abric.

:::paragraphs{style="flush"}
**Benvolguda Ines Barlow:** en Pip creixerà algun dia? —*Sam, Brook Lane*
:::

**Respon Ines Barlow:** Creix una mica cada hivern. Ell no se n’adona.

:::paragraphs{style="flush"}
Escriviu a en Pip i l’Otto al Despatx, 12 Bridge Street, Corrington, o per correu electrònic. Les cartes poden aparèixer resumides.
:::

:::callout{type="ad" title="Publicitat"}
**Deu hiverns al glaç.** Totes les tires de diumenge d’en Pip i l’Otto dels deu primers anys, en un sol llibre. 240 pàgines en color, 18 £ a la botiga del Despatx i a les bones llibreries.
:::

:::paragraphs{style="imprint"}
Compost en Newsreader i Archivo Narrow; retolat en Comic Neue i Bangers (SIL OFL). Imatges generades amb models de difusió.
:::
`; // content.<lang>.md, inlined by the Cookbook

// #region art: the seven pictures: safe area, speakers' anchors and avoid zones
// From the art manifest; fractions of each picture, the same in every language.
const face = (x, y, width, height) => ({ x, y, width, height });
const ART = {
  po1: { width: 1024, height: 1024, safeArea: face(0.11, 0.22, 0.71, 0.45),
    anchors: [{ id: 'pip', x: 0.27, y: 0.58, face: face(0.11, 0.44, 0.22, 0.2) },
      { id: 'otto', x: 0.67, y: 0.37, face: face(0.56, 0.23, 0.24, 0.22) }] },
  po2: { width: 1024, height: 1024, safeArea: face(0.07, 0.14, 0.79, 0.56),
    anchors: [{ id: 'pip', x: 0.23, y: 0.62, face: face(0.07, 0.5, 0.22, 0.18) },
      { id: 'otto', x: 0.75, y: 0.31, face: face(0.52, 0.14, 0.33, 0.22) }],
    avoid: [face(0.28, 0.17, 0.38, 0.39)] },
  po3: { width: 1024, height: 1024, safeArea: face(0.03, 0.18, 0.72, 0.56),
    anchors: [{ id: 'pip', x: 0.275, y: 0.36, face: face(0.1, 0.19, 0.25, 0.21) }],
    avoid: [face(0.34, 0.41, 0.64, 0.41)] },
  po4: { width: 1024, height: 1024, safeArea: face(0.07, 0.19, 0.84, 0.53),
    anchors: [{ id: 'pip', x: 0.23, y: 0.61, face: face(0.07, 0.48, 0.22, 0.18) },
      { id: 'otto', x: 0.69, y: 0.36, face: face(0.53, 0.19, 0.39, 0.23) }],
    avoid: [face(0.31, 0.63, 0.05, 0.08), face(0.39, 0.32, 0.29, 0.18)] },
  po5: { width: 1400, height: 600, safeArea: face(0.16, 0.17, 0.6, 0.66),
    anchors: [{ id: 'pip', x: 0.345, y: 0.53, face: face(0.29, 0.4, 0.09, 0.18) },
      { id: 'otto', x: 0.625, y: 0.33, face: face(0.58, 0.17, 0.12, 0.23) }] },
  po6: { width: 1152, height: 1152, safeArea: face(0.3, 0.21, 0.43, 0.35),
    anchors: [{ id: 'pip', x: 0.46, y: 0.39, face: face(0.35, 0.25, 0.2, 0.18) },
      { id: 'fish', x: 0.66, y: 0.46, face: face(0.64, 0.41, 0.07, 0.12) }] },
  po7: { width: 1400, height: 933, safeArea: face(0.07, 0.15, 0.81, 0.65),
    anchors: [{ id: 'pip', x: 0.195, y: 0.64, face: face(0.1, 0.56, 0.15, 0.14) },
      { id: 'otto', x: 0.795, y: 0.35, face: face(0.7, 0.18, 0.18, 0.22) },
      { id: 'sfx', x: 0.62, y: 0.7 }],
    avoid: [face(0.44, 0.3, 0.15, 0.32)] },
};
const ALT = {
  po1: t({ en: 'Pip the penguin waddles into Otto the walrus’s tiny bakery, waving.',
    es: 'Pip, el pingüino, entra saludando en la pequeña panadería de Otto, la morsa.',
    ca: 'En Pip, el pingüí, entra saludant a la petita fleca de l’Otto, la morsa.',
    zh: '企鹅皮普摇摇摆摆走进海象奥托的小面包店，挥着手。',
    ar: 'البطريق بيب يدخل مخبز الفظّ أوتو الصغير وهو يلوّح.',
    ja: 'ペンギンのピップが手を振りながら、セイウチのオットーの小さなパン屋に入ってくる。',
    pt: 'O pinguim Pip entra acenando na padariazinha da morsa Otto.' }),
  po2: t({ en: 'Otto proudly holds up a croissant as big as Pip.',
    es: 'Otto enseña orgulloso un cruasán tan grande como Pip.',
    ca: 'L’Otto ensenya orgullós un croissant tan gran com en Pip.',
    zh: '奥托得意地举起一个和皮普一样大的羊角面包。',
    ar: 'أوتو يرفع بفخر كرواسونًا بحجم بيب.',
    ja: 'オットーが、ピップと同じくらい大きなクロワッサンを得意げに持ち上げる。',
    pt: 'Otto ergue, todo orgulhoso, um croissant do tamanho do Pip.' }),
  po3: t({ en: 'Pip stands on the counter next to the giant croissant, scratching his head.',
    es: 'Pip, de pie en el mostrador junto al cruasán gigante, se rasca la cabeza.',
    ca: 'En Pip, dret al taulell al costat del croissant gegant, es grata el cap.',
    zh: '皮普站在柜台上，挨着巨大的羊角面包挠头。',
    ar: 'بيب واقف على المنضدة بجانب الكرواسون العملاق يحكّ رأسه.',
    ja: 'ピップがカウンターの巨大なクロワッサンの横に立ち、頭をかいている。',
    pt: 'Pip, de pé no balcão ao lado do croissant gigante, coça a cabeça.' }),
  po4: t({ en: 'Otto munches the big half of the croissant; Pip holds a tiny end piece.',
    es: 'Otto se come la mitad grande del cruasán; Pip sostiene una punta diminuta.',
    ca: 'L’Otto es menja la meitat gran del croissant; en Pip aguanta una punta minúscula.',
    zh: '奥托大口吃着大半个羊角面包；皮普手里拿着一小截面包尖。',
    ar: 'أوتو يلتهم النصف الكبير من الكرواسون، وبيب يمسك طرفًا صغيرًا.',
    ja: 'オットーがクロワッサンの大きいほうをほおばり、ピップは小さな端っこを持っている。',
    pt: 'Otto devora a metade grande do croissant; Pip segura uma pontinha.' }),
  po5: t({ en: 'Pip and Otto fish through a hole in an ice floe beside a tiny bakery hut.',
    es: 'Pip y Otto pescan por un agujero en un témpano, junto a una caseta de panadería.',
    ca: 'En Pip i l’Otto pesquen per un forat en un glaç, al costat d’una caseta de fleca.',
    zh: '皮普和奥托在浮冰的冰洞里钓鱼，旁边是一间小面包屋。',
    ar: 'بيب وأوتو يصطادان من ثقب في جليد طافٍ بجانب كوخ مخبز صغير.',
    ja: '流氷の穴でピップとオットーが釣りをしている。そばに小さなパン屋の小屋。',
    pt: 'Pip e Otto pescam num buraco do bloco de gelo, ao lado de uma padariazinha.' }),
  po6: t({ en: 'Pip proudly holds up a tiny, unimpressed fish.',
    es: 'Pip levanta orgulloso un pez diminuto y nada impresionado.',
    ca: 'En Pip aixeca orgullós un peix minúscul i gens impressionat.',
    zh: '皮普得意地举起一条小小的、一脸不屑的鱼。',
    ar: 'بيب يرفع بفخر سمكة صغيرة لا يبدو عليها أي إعجاب.',
    ja: 'ピップが、少しもうれしそうでない小さな魚を得意げに持ち上げる。',
    pt: 'Pip ergue, todo orgulhoso, um peixinho nada impressionado.' }),
  po7: t({ en: 'Otto reels in a soggy boot; Pip has fallen on his back laughing.',
    es: 'Otto saca del agua una bota empapada; Pip se ha caído de espaldas de la risa.',
    ca: 'L’Otto treu de l’aigua una bota xopa; en Pip ha caigut d’esquena de riure.',
    zh: '奥托钓上来一只湿透的靴子；皮普笑得仰面摔倒。',
    ar: 'أوتو يسحب حذاءً مبتلًا، وبيب سقط على ظهره من الضحك.',
    ja: 'オットーがずぶぬれの長靴を釣り上げ、ピップは笑いころげてあおむけに倒れている。',
    pt: 'Otto puxa uma bota encharcada; Pip caiu de costas de tanto rir.' }),
};
// #endregion

// ─── 3 · Fonts ──────────────────────────────────────────────────────────────
// Every face of the six editions; each edition loads the latin files of all of them and the
// Chinese, Japanese or Arabic files of its own (gotcha: fonts-first).
const FONTS = {
  Newsreader: ['400', '400i', '700'],
  'Archivo Narrow': ['400', '700'],
  'Comic Neue': ['400', '400i', '700', '700i'],
  Bangers: ['400'],
  'Noto Serif SC': ['400', '700'],
  'Noto Sans SC': ['400', '700'],
  'ZCOOL KuaiLe': ['400'],
  'ZCOOL QingKe HuangYou': ['400'],
  'Noto Serif JP': ['400', '700'],
  'Noto Sans JP': ['400', '700'],
  'Zen Antique': ['400'],
  'Dela Gothic One': ['400'],
  'Noto Naskh Arabic': ['400', '700'],
  'Noto Kufi Arabic': ['400', '700'],
  'Playpen Sans Arabic': ['400', '700'],
  Lalezar: ['400'],
};

// ─── 4 · Build & show ───────────────────────────────────────────────────────
const faces = Object.fromEntries([TEXT, LABEL, LETTERING, SFX].map((f) => [f, FONTS[f]]));
await loadFonts(FONTS, markdown);
await loadCjkFonts(faces, markdown);
await loadArabicFonts(faces, markdown);
await loadComicFonts({ [LETTERING]: FONTS[LETTERING], [SFX]: FONTS[SFX] }, markdown);
const panel = (id, url) => comicPanel(id, url, { ...ART[id], alt: ALT[id] });
const resources = await Promise.all([
  panel('po1', asset('po1.jpg')), panel('po2', asset('po2.jpg')), panel('po3', asset('po3.jpg')),
  panel('po4', asset('po4.jpg')), panel('po5', asset('po5.jpg')), panel('po6', asset('po6.jpg')),
  panel('po7', asset('po7.jpg')),
]);
const doc = await buildWithFonts(() => buildDocument({ markdown, resources }, config()), markdown);
showBook(doc, { title: t({ en: 'A daily strip and a Sunday half page in the newspaper',
  es: 'Una tira diaria y media página dominical en el periódico',
  pt: 'Uma tirinha diária e meia página de domingo no jornal' }) });
offerPdf(() => renderToPdf(doc, { fontProvider: comicPdfProvider, resourceBytes: imageBytes }),
  `${RECIPE}.pdf`);

// ─── 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 v2 ── the same in every recipe · postext.dev/cookbook
// Postext measures with the loaded faces and caches the widths: load every face
// before the first build, from Fontsource, the files the PDF embeds too.

/** 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.
 *  Resolves to the number of faces added. */
async function loadFonts(faces, text = '', { optional = false } = {}) {
  kitStatus('Loading fonts…');
  const ranges = {
    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',
  };
  const jobs = [];
  let added = 0;
  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 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 = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${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().then((ready) => { document.fonts.add(ready); added++; }, () => {
          if (subset === 'latin' && !optional) throw new Error(`Fontsource has no ${family} ${weight} ${style}`);
        }));
      }
    }
  }
  await Promise.all(jobs).catch((error) => { kitFail(error); throw error; });
  return added;
}

/** Runs `build` and loads any face the pages use that FONTS missed (a regular
 *  one with a warning), then clears the measurement cache and builds again. */
async function buildWithFonts(build, text = '') {
  const tried = new Set();
  for (let round = 0; round < 3; round++) {
    kitStatus('Laying out…');
    await new Promise(requestAnimationFrame);          // let the status paint first
    const result = await Promise.resolve().then(build).catch((error) => { kitFail(error); throw error; });
    const wanted = { base: {}, variants: {} };
    for (const { font, base } of [result].flat().flatMap(fontStringsOf)) {
      const { family, weight, style } = parseFont(font);
      const key = `${family}|${weight}|${style}`;
      if (tried.has(key) || hasFace(family, weight, style)) continue;
      tried.add(key);
      (wanted[base ? 'base' : 'variants'][family] ??= []).push(`${weight}${style === 'italic' ? 'i' : ''}`);
    }
    if (Object.keys(wanted.base).length) {
      console.warn(`[cookbook] FONTS does not list ${JSON.stringify(wanted.base)}: loading them.`);
    }
    const added = await loadFonts(wanted.base, text) + await loadFonts(wanted.variants, text, { optional: true });
    if (added === 0) return result;
    clearMeasurementCache();
  }
  throw new Error('The fonts did not settle after three builds.');
}

/** Every font string of the layout; `base` marks a block's own face. */
function fontStringsOf(doc) {
  const found = new Map();
  const walk = (node) => {
    if (!node || typeof node !== 'object') return;
    if (Array.isArray(node)) { node.forEach(walk); return; }
    for (const [key, value] of Object.entries(node)) {
      if (typeof value === 'string' && /fontString$/i.test(key)) {
        found.set(value, found.get(value) || key === 'fontString');
      } else if (value && typeof value === 'object') walk(value);
    }
  };
  walk(doc.pages);
  walk(doc.blocks);
  return [...found].map(([font, base]) => ({ font, base }));
}

/** '700 37.5px Open Sans' / 'italic 400 13px "Source Serif 4"' → { family, weight, style }.
 *  A string with no weight ('95.8px Young Serif', from a design text) is 400. */
function parseFont(font) {
  const m = /^(?:(italic|oblique)\s+)?(?:small-caps\s+)?(?:(\d+|bold|normal)\s+)?[\d.]+px\s+(.+)$/.exec(font.trim());
  if (!m) throw new Error(`Unexpected font string: ${font}`);
  const weight = m[2] === 'bold' ? 700 : !m[2] || m[2] === 'normal' ? 400 : Number(m[2]);
  return { family: m[3].replace(/^["']|["']$/g, ''), weight, style: m[1] ? 'italic' : 'normal' };
}

/** 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, '-'); }

/** 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 v1 ── 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. */
function showPages(docs, { title, width = 460 } = {}) {
  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, { 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 · pdf v2 ── the same in every recipe that exports a PDF
/** The Fontsource files the screen used, as TrueType: the nearest weight the
 *  family ships, upright if it has no italic; latin, then what the face's
 *  letters need (kitSubsetsFor). */
async function fontsourceProvider(family, weight, style, request) {
  const id = fontsourceId(family);
  const meta = await fontsourceMeta(family);
  const weights = meta?.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && meta && !meta.styles.includes('italic') ? 'normal' : style;
  const text = String.fromCodePoint(...(request?.codePoints ?? []));
  const more = kitSubsetsFor(text, meta);
  const files = await Promise.all(['latin', ...more].map(async (subset) => {
    const res = await fetch(`https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-${subset}-${w}-${s}.woff2`);
    if (!res.ok) throw new Error(`Fontsource has no ${family} ${w} ${s} ${subset}`);
    return decompressWoff2(new Uint8Array(await res.arrayBuffer()));
  }));
  return files.length === 1 ? files[0] : files;
}

/** A "Build the PDF" button; then "Open the PDF" (a new tab: CodePen's frame
 *  shows no PDFs) and a download link. */
function offerPdf(makePdf, filename) {
  viewer();
  const button = Object.assign(document.createElement('button'), { type: 'button', textContent: 'Build the PDF' });
  button.dataset.postextPdf = filename;
  button.addEventListener('click', async () => {
    button.disabled = true;
    button.textContent = 'Building the PDF…';
    try {
      const bytes = await makePdf();
      const url = URL.createObjectURL(new Blob([bytes], { type: 'application/pdf' }));
      const size = `${Math.max(1, Math.round(bytes.length / 1024))} KB`;
      button.replaceWith(
        Object.assign(document.createElement('a'), { href: url, target: '_blank', rel: 'noopener', textContent: 'Open the PDF ↗' }),
        Object.assign(document.createElement('a'), { href: url, download: filename, textContent: `Download ${filename} · ${size}` }));
    } catch (error) {
      button.disabled = false;
      button.textContent = 'Build the PDF';
      kitFail(error);
    }
  });
  document.getElementById('pt-actions').append(button);
}

// ─── Kit · images v1 ── 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 (drawn in code, or fetched) as a vector image. */
async function loadSvg(fileId, svg) {
  const img = new Image();
  img.src = `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`;
  await img.decode();
  registerResourceImage(fileId, img);
  (loadImage.bytes ??= new Map()).set(fileId, new TextEncoder().encode(svg));
}

/** 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 · cjk v1 ── Chinese, Japanese and Korean books · postext.dev/cookbook
// Fontsource ships a CJK family as about a hundred files per weight, each
// declared in its stylesheet with the unicode-range it covers. The screen
// loads the files the sample touches; the PDF gets the same files for the
// characters its pages set in each face, and embeds each as a subset.
// A book bound on the right (vertical text) is shown with its spreads
// mirrored: page 1 alone on the left of the spine, then [3 | 2].

/** The files of a Fontsource face, read from its stylesheet: { url, range,
 *  ranges }, the last declared first (the order the browser tries them in). */
function cjkSlices(family, weight, style) {
  cjkSlices.cache ??= new Map();
  const id = fontsourceId(family);
  const css = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/${weight}${style === 'italic' ? '-italic' : ''}.css`;
  if (!cjkSlices.cache.has(css)) {
    cjkSlices.cache.set(css, fetch(css)
      .then((res) => {
        if (!res.ok) throw new Error(`Fontsource has no ${family} ${weight} ${style} (${res.status})`);
        return res.text();
      })
      .then((text) => [...text.matchAll(/@font-face\s*{([^}]*)}/g)].map(([, rule]) => {
        const range = /unicode-range:\s*([^;]+);/.exec(rule)?.[1].trim() ?? 'U+0-10FFFF';
        const ranges = range.split(',').map((part) => {
          const [lo, hi = lo] = part.trim().slice(2).split('-');
          return [parseInt(lo, 16), parseInt(hi, 16)];
        });
        return { url: new URL(/url\(([^)]+?\.woff2)\)/.exec(rule)[1], css).href, range, ranges };
      }).reverse()));
  }
  return cjkSlices.cache.get(css);
}

/** The file of `slices` that holds code point `cp`, if any. */
function cjkSliceFor(slices, cp) {
  return slices.find((slice) => slice.ranges.some(([lo, hi]) => cp >= lo && cp <= hi));
}

/** Whether Fontsource serves `family` as a Chinese, Japanese or Korean
 *  family (its subsets name the script). Fails when the API does not
 *  answer: a CJK face taken for a Latin one would paint in a system face. */
async function isCjkFamily(family) {
  const meta = await fontsourceMeta(family);
  if (!meta) throw new Error(`api.fontsource.org did not describe ${family}: reload to try again`);
  return !!meta.subsets?.some((subset) => /^(chinese|japanese|korean)/.test(subset));
}

/** faces = { 'Noto Serif TC': ['400', '700'] }, as for loadFonts: the
 *  whole FONTS object may be passed, its other families are left to
 *  loadFonts. Adds one FontFace per file of each CJK face with its
 *  unicodeRange, then loads the files `text` touches. `text` is what the
 *  faces set: the sample for the text face; a book in several voices calls
 *  it once per voice (loadCjkFonts({ 'LXGW WenKai TC': ['400'] }, quotes)),
 *  so the heading and quotation faces fetch and check only their own
 *  characters. Fails when a character of `text` is in no file of a face.
 *  List every weight the pages use: a weight left to buildWithFonts gets
 *  the latin file only. With { vertical: true } it also loads each
 *  family's vertical forms (brackets, quotes, pause marks) for the canvas,
 *  which needs loadVerticalAlternates imported from postext. Resolves to
 *  the number of files loaded. */
async function loadCjkFonts(faces, text, { vertical = false } = {}) {
  kitStatus('Loading fonts…');
  let loaded = 0;
  try {
    if (vertical && typeof loadVerticalAlternates !== 'function') {
      throw new Error('loadCjkFonts(…, { vertical: true }) needs loadVerticalAlternates imported from postext');
    }
    for (const [family, specs] of Object.entries(faces)) {
      if (!(await isCjkFamily(family))) continue;
      const twin = [];
      for (const spec of new Set(specs)) {
        const weight = parseInt(spec, 10);
        const style = spec.endsWith('i') ? 'italic' : 'normal';
        const slices = await cjkSlices(family, weight, style);
        const missing = [...new Set(text)].filter((ch) => /\S/.test(ch) && !cjkSliceFor(slices, ch.codePointAt(0)));
        if (missing.length) {
          throw new Error(`${family} ${spec} has no file for ${missing.slice(0, 12).join(' ')}: `
            + `give each face the text it sets (loadCjkFonts({ '${family}': ['${spec}'] }, text))`);
        }
        for (const slice of slices) {
          document.fonts.add(new FontFace(family, `url(${slice.url}) format('woff2')`,
            { weight: String(weight), style, unicodeRange: slice.range }));
          twin.push({ source: slice.url, weight: String(weight), style, unicodeRange: slice.range });
        }
        const font = `${style === 'italic' ? 'italic ' : ''}${weight} 16px "${family}"`;
        loaded += (await document.fonts.load(font, text)).length;
        if (!document.fonts.check(font, text)) throw new Error(`${family} ${spec} did not load for the sample`);
      }
      // The same files under a twin name with the `vert` feature on: the
      // canvas paints the punctuation of vertical lines with it.
      if (vertical && twin.length) await loadVerticalAlternates(family, twin);
    }
  } catch (error) {
    kitFail(error);
    throw error;
  }
  return loaded;
}

/** The PDF font provider for recipes with CJK faces: a family whose
 *  Fontsource subsets are Chinese, Japanese or Korean gets the files that
 *  hold the characters its pages set (`request.codePoints`); any other
 *  family gets the latin file fontsourceProvider fetches (the "pdf" block)
 *  and, when the face sets letters only latin-ext has, that file too. */
async function cjkPdfProvider(family, weight, style, request) {
  if (!(await isCjkFamily(family))) return cjkLatinPdfFiles(family, weight, style, request);
  const meta = await fontsourceMeta(family);
  const weights = meta.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && !meta.styles.includes('italic') ? 'normal' : style;
  const slices = await cjkSlices(family, w, s);
  const picked = new Set();
  for (const cp of request?.codePoints ?? []) {
    const slice = cjkSliceFor(slices, cp);
    if (slice) picked.add(slice);
  }
  if (!picked.size) picked.add(slices[0]);
  return Promise.all(slices.filter((slice) => picked.has(slice)).map(async (slice) => {
    const res = await fetch(slice.url);
    if (!res.ok) throw new Error(`Fontsource file ${slice.url} (${res.status})`);
    return decompressWoff2(new Uint8Array(await res.arrayBuffer()));
  }));
}

/** A Latin family set next to the CJK faces: its latin file, then its
 *  latin-ext file when the face sets letters only latin-ext has (ō ū in
 *  Hepburn rōmaji, ǎ in pinyin), the file loadFonts adds on screen for
 *  them. Latin comes first: postext-pdf draws a character from the first
 *  file that has it, as the browser takes a character both files hold from
 *  latin. A face Fontsource ships without latin-ext, or whose file does
 *  not come, gets latin alone, and the PDF names the letters it lacks. */
async function cjkLatinPdfFiles(family, weight, style, request) {
  const meta = await fontsourceMeta(family);
  const beyond = [...(request?.codePoints ?? [])].some(cjkLatinExtOnly);
  if (!beyond || !meta?.subsets?.includes('latin-ext')) return fontsourceProvider(family, weight, style);
  const weights = meta.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && !meta.styles.includes('italic') ? 'normal' : style;
  const id = fontsourceId(family);
  const url = `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-latin-ext-${w}-${s}.woff2`;
  const [latin, ext] = await Promise.all([fontsourceProvider(family, weight, style), fetch(url)
    .then(async (res) => (res.ok ? decompressWoff2(new Uint8Array(await res.arrayBuffer())) : null), () => null)]);
  return ext ? [latin, ext] : latin;
}

/** Whether code point `cp` is in Fontsource's latin-ext file and not in
 *  its latin file: Latin Extended-A and -B, IPA, the spacing modifiers and
 *  Latin Extended Additional (loadFonts's test for latin-ext), less the
 *  few latin holds too (ı Œ œ ʻ ʼ ˆ ˚ ˜). */
function cjkLatinExtOnly(cp) {
  if (!((cp >= 0x100 && cp <= 0x2ff) || (cp >= 0x1e00 && cp <= 0x1eff))) return false;
  return ![0x131, 0x152, 0x153, 0x2bb, 0x2bc, 0x2c6, 0x2da, 0x2dc].includes(cp);
}

/** showPages for a book bound on either edge. A right-bound book (the
 *  document says so: doc.binding is 'right' for page.binding 'right' and
 *  for vertical text) lies on the desk as it opens: page 1 alone on the
 *  left of the spine, then [3 | 2], the spine shade on each page's inner
 *  edge. `binding` ('left' | 'right') overrides the document's. */
function showBook(docs, { binding, ...options } = {}) {
  const count = showPages(docs, options);
  const right = (binding ?? [docs].flat()[0]?.binding) === 'right';
  if (!document.getElementById('pt-kit-cjk')) {
    // The pages keep direction ltr: a canvas draws text in the direction its
    // element inherits, and under rtl each run would end where the engine
    // starts it, its brackets mirrored.
    document.head.insertAdjacentHTML('beforeend', `<style id="pt-kit-cjk">
      .pt-spread[dir="rtl"] canvas { direction: ltr; }
      .pt-spread[dir="rtl"] 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); }
    </style>`);
  }
  // Each pair stays [verso, recto] in the page; right to left, the verso
  // sits on the right. Phones stack the pages in reading order either way.
  for (const spread of document.querySelectorAll('#pages > .pt-spread')) spread.dir = right ? 'rtl' : 'ltr';
  document.getElementById('pages').dataset.binding = right ? 'right' : 'left';
  return count;
}

// ─── Kit · arabic v1 ── Arabic-script faces · postext.dev/cookbook
// Fontsource ships an Arabic family as one file per subset and weight: the
// `arabic` file holds the letters, the harakat, the Arabic-Indic digits, the
// Arabic punctuation and the presentation forms; `latin` and `latin-ext`
// hold the rest. loadFonts loads the latin files; this block adds the arabic
// file of every Arabic family, for the canvas and for the PDF, which shapes
// the letters with HarfBuzz from the same bytes.

/** The code points of Fontsource's `arabic` subset, as its stylesheets
 *  declare them (the same unicode-range the browser picks the file by). A
 *  function, not a const: the kit is inlined after the recipe's top-level
 *  awaits, and a const read before its line throws, where a function
 *  declaration is hoisted. */
function arabicRange() {
  return 'U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0897-08E1,U+08E3-08FF,'
    + 'U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC,U+102E0-102FB,'
    + 'U+10E60-10E7E,U+10EC2-10EC4,U+10EFC-10EFF,U+1EE00-1EEFF';
}

/** Whether code point `cp` is in the arabic file. */
function inArabicRange(cp) {
  inArabicRange.ranges ??= arabicRange().split(',').map((part) => {
    const [lo, hi = lo] = part.slice(2).split('-');
    return [parseInt(lo, 16), parseInt(hi, 16)];
  });
  return inArabicRange.ranges.some(([lo, hi]) => cp >= lo && cp <= hi);
}

/** Whether Fontsource serves `family` with an `arabic` subset. Fails when
 *  the API does not answer: an Arabic face taken for a Latin one would set
 *  its letters in a system face. */
async function isArabicFamily(family) {
  const meta = await fontsourceMeta(family);
  if (!meta) throw new Error(`api.fontsource.org did not describe ${family}: reload to try again`);
  return !!meta.subsets?.includes('arabic');
}

/** The arabic file of a face. */
function arabicFileUrl(family, weight, style) {
  const id = fontsourceId(family);
  return `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-arabic-${weight}-${style}.woff2`;
}

/** faces = { Amiri: ['400', '700'] }, as for loadFonts, after it: the whole
 *  FONTS object may be passed, its families without an arabic subset are
 *  left alone. Adds the arabic file of every listed weight of each Arabic
 *  family (the latin files come from loadFonts) and loads it. `text` is
 *  the sample: fails when it holds an Arabic-script character the arabic
 *  file does not cover. List every weight the pages set in Arabic: a weight
 *  left to buildWithFonts gets the latin file only, and its Arabic letters
 *  fall back to a system face. Resolves to the number of files loaded. */
async function loadArabicFonts(faces, text = '') {
  kitStatus('Loading fonts…');
  let loaded = 0;
  try {
    const outside = [...new Set(text)].filter((ch) => /\p{Script=Arabic}/u.test(ch) && !inArabicRange(ch.codePointAt(0)));
    if (outside.length) throw new Error(`Fontsource's arabic files have no ${outside.slice(0, 12).join(' ')}`);
    for (const [family, specs] of Object.entries(faces)) {
      if (!(await isArabicFamily(family))) continue;
      for (const spec of new Set(specs)) {
        const weight = parseInt(spec, 10);
        const style = spec.endsWith('i') ? 'italic' : 'normal';
        const face = new FontFace(family, `url(${arabicFileUrl(family, weight, style)}) format('woff2')`,
          { weight: String(weight), style, unicodeRange: arabicRange() });
        document.fonts.add(await face.load().catch(() => {
          throw new Error(`Fontsource has no arabic file for ${family} ${weight} ${style}`);
        }));
        loaded++;
      }
    }
  } catch (error) {
    kitFail(error);
    throw error;
  }
  return loaded;
}

/** The PDF font provider for recipes with Arabic faces: a family with an
 *  arabic subset gets its arabic file when its pages set Arabic letters
 *  (`request.codePoints`), then its latin file, and its latin-ext file for
 *  the letters beyond latin (transliteration: ā ḥ ʿ). The arabic file comes
 *  first: it also holds the space and the brackets, so a line of Arabic is
 *  shaped as one run and not cut at every space. Any other family goes to
 *  fontsourceProvider (the "pdf" block). */
async function arabicPdfProvider(family, weight, style, request) {
  if (!(await isArabicFamily(family))) return fontsourceProvider(family, weight, style, request);
  const meta = await fontsourceMeta(family);
  const weights = meta.weights?.length ? meta.weights : [400, 700];
  const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
  const s = style === 'italic' && !meta.styles.includes('italic') ? 'normal' : style;
  const wanted = [...(request?.codePoints ?? [])];
  const id = fontsourceId(family);
  const urls = [];
  if (!wanted.length || wanted.some(inArabicRange)) urls.push(arabicFileUrl(family, w, s));
  urls.push(`https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-latin-${w}-${s}.woff2`);
  if (meta.subsets.includes('latin-ext') && wanted.some((cp) => /[Ā-˿Ḁ-ỿ]/u.test(String.fromCodePoint(cp)))) {
    urls.push(`https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-latin-ext-${w}-${s}.woff2`);
  }
  return Promise.all(urls.map(async (url) => {
    const res = await fetch(url);
    if (!res.ok) throw new Error(`Fontsource file ${url} (${res.status})`);
    return decompressWoff2(new Uint8Array(await res.arrayBuffer()));
  }));
}

// ─── Kit · comics v1 ── comic pages · postext.dev/cookbook
// The engine letters a comic in a face per language (defaultComicFont:
// Comic Neue, Zen Antique for Japanese, Noto Sans SC, LXGW WenKai TC,
// Playpen Sans Arabic; defaultComicSfxFont: Bangers, Dela Gothic One,
// ZCOOL KuaiLe, Lalezar) and asks for the bold of a shout or a sound effect
// and the italic of an inner voice. Most of these faces ship one weight and
// no italic: this block declares the file Fontsource does ship for those
// variants, so the canvas measures and paints the letters the PDF embeds
// (the providers snap to the shipped file) and not a bold or a slant the
// browser makes up. It also turns the art manifest into panel resources.

/** faces = { 'Comic Neue': ['400', '700'], Bangers: ['400'] }, as for
 *  loadFonts, after it (and after loadCjkFonts or loadArabicFonts for the
 *  faces of those scripts); the whole FONTS object may be passed. List in
 *  FONTS only what Fontsource ships (Bangers: ['400']): loadFonts fails on
 *  the rest. For each family, the regular, bold, italic and bold italic it
 *  lacks are declared with its nearest file (the regular for the bold, the
 *  upright for the italic) and loaded for `text`. A CJK face needs the cjk
 *  block; an Arabic face setting Arabic, the arabic block. Resolves to the
 *  number of variants added. */
async function loadComicFonts(faces, text = '') {
  kitStatus('Loading fonts…');
  let added = 0;
  try {
    for (const family of Object.keys(faces)) {
      const meta = await fontsourceMeta(family);
      if (!meta) throw new Error(`api.fontsource.org did not describe ${family}: reload to try again`);
      const weights = meta.weights?.length ? meta.weights : [400, 700];
      const styles = meta.styles?.length ? meta.styles : ['normal'];
      for (const [weight, style] of [[400, 'normal'], [700, 'normal'], [400, 'italic'], [700, 'italic']]) {
        if ((weights.includes(weight) && styles.includes(style)) || hasFace(family, weight, style)) continue;
        const w = weights.reduce((a, b) => (Math.abs(b - weight) < Math.abs(a - weight) ? b : a));
        const s = style === 'italic' && styles.includes('italic') ? 'italic' : 'normal';
        for (const { url, range } of await comicFaceFiles(family, w, s, meta, text)) {
          document.fonts.add(new FontFace(family, `url(${url}) format('woff2')`,
            { weight: String(weight), style, unicodeRange: range }));
        }
        await document.fonts.load(`${style === 'italic' ? 'italic ' : ''}${weight} 16px "${family}"`, text || 'A');
        added++;
      }
    }
  } catch (error) {
    kitFail(error);
    throw error;
  }
  return added;
}

/** The files of a shipped face ({ url, range }): a CJK face's slices (the
 *  cjk block reads them from its stylesheet), else latin, the latin-ext
 *  and greek files `text` needs, and the arabic file when `text` holds
 *  Arabic. */
async function comicFaceFiles(family, weight, style, meta, text) {
  if (meta.subsets?.some((subset) => /^(chinese|japanese|korean)/.test(subset))) {
    if (typeof cjkSlices !== 'function') throw new Error(`${family} is a CJK face: list the cjk kit block`);
    return (await cjkSlices(family, weight, style)).map(({ url, range }) => ({ url, range }));
  }
  const id = fontsourceId(family);
  const file = (subset) => `https://cdn.jsdelivr.net/npm/@fontsource/${id}@5/files/${id}-${subset}-${weight}-${style}.woff2`;
  const files = ['latin', ...kitSubsetsFor(text, meta)].map((subset) => ({ url: file(subset), range: comicRange(subset) }));
  if (meta.subsets?.includes('arabic') && /\p{Script=Arabic}/u.test(text)) {
    if (typeof arabicRange !== 'function') throw new Error(`${family} sets Arabic: list the arabic kit block`);
    files.unshift({ url: file('arabic'), range: arabicRange() });
  }
  return files;
}

/** The unicode-range loadFonts gives a Fontsource file. A function, not a
 *  const: the kit is inlined after the recipe's top-level awaits. */
function comicRange(subset) {
  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',
  }[subset];
}

/** The PDF font provider of a comic in any script: a CJK face goes to
 *  cjkPdfProvider, an Arabic face to arabicPdfProvider, any other to
 *  fontsourceProvider (the "pdf" block). Each embeds the shipped weight
 *  and style nearest to the one asked for, the file loadComicFonts
 *  declared for the canvas. */
async function comicPdfProvider(family, weight, style, request) {
  const subsets = (await fontsourceMeta(family))?.subsets ?? [];
  if (subsets.some((subset) => /^(chinese|japanese|korean)/.test(subset))) {
    if (typeof cjkPdfProvider !== 'function') throw new Error(`${family} is a CJK face: list the cjk kit block`);
    return cjkPdfProvider(family, weight, style, request);
  }
  if (subsets.includes('arabic') && typeof arabicPdfProvider === 'function') {
    return arabicPdfProvider(family, weight, style, request);
  }
  return fontsourceProvider(family, weight, style, request);
}

/** A panel picture as a resource for art= (and pop=): loads `url`
 *  (write asset('lh-arrive.jpg') in the call, so the lint checks the file)
 *  and declares it with `meta`, its entry in the art manifest:
 *  { width, height, alt, safeArea, anchors, avoid }. The safe area is what
 *  every crop keeps, the anchors the speakers' mouths, heads and faces,
 *  the avoid zones what no balloon covers; all in fractions of the picture,
 *  the same in every language. Without width and height, the picture's own
 *  size. Needs the images block. Resolves to the resource. */
async function comicPanel(id, url, meta = {}) {
  const fileId = decodeURIComponent(url.split('/').pop());
  await loadImage(fileId, url);
  let { width, height } = meta;
  if (!width || !height) {
    const bitmap = await createImageBitmap(new Blob([imageBytes(fileId)]));
    ({ width, height } = bitmap);
    bitmap.close();
  }
  return {
    id, typeId: meta.typeId ?? 'figure', kind: 'bitmap', createdAt: 0, updatedAt: 0,
    bitmap: { fileId, format: /\.png$/i.test(fileId) ? 'png' : 'jpeg', width, height },
    ...(meta.alt && { altText: meta.alt }),
    ...(meta.safeArea && { safeArea: meta.safeArea }),
    ...(meta.anchors?.length && { anchors: meta.anchors }),
    ...(meta.avoid?.length && { avoid: meta.avoid }),
  };
}

// ─── /Kit ───────────────────────────────────────────────────────────────────────
```

## Variants

### Fixa l’alçada de la tira diària

```diff
-:::strip{split="* | * | * | *" span=page placement=bottom}
+:::strip{split="* | * | * | *" span=page placement=bottom height=45mm}
```

### Posa una tira d’una columna al text

Sense `span=page`, una tira té l’amplada de la seva columna i es compon on és escrita, com una figura en línia.

```diff
-:::strip{split="* | * | * | *" span=page placement=bottom}
+:::strip{split="* / * / * / *" aspect=0.25}
```

## Errors freqüents

- **Qualsevol objecte headings desactiva el salt de pàgina de l'H1.** Per defecte un H1 salta a una pàgina senar (always-odd), però qualsevol objecte headings anul·la aquest valor, de manera que els capítols van seguits i span: 'page' no fa res. Torna a declarar headings.levels[0].breakBefore: { enabled: true, parity } a cada configuració.
- **Carrega totes les fonts abans de compondre.** La composició mesura el text amb les fonts que el navegador ha carregat i en desa les amplades, així que una font que arriba després de la primera composició deixa talls de línia erronis i un PDF que ja no coincideix amb la pantalla. Carrega abans tots els pesos i estils, i crida clearMeasurementCache() abans de recompondre si alguna arriba tard.
- **Un flotant 'top' no cau mai a la pàgina que el cita.** Un flotant no va mai per sobre de la seva pròpia referència, així que un flotant 'top' a tota l'amplada citat a la pàgina N obre la pàgina N+1. Cita'l abans, o fes servir la posició 'auto' o 'bottom', que poden ocupar el peu de la pàgina que el cita.

- La capçalera de la secció la dibuixa la capçalera de pàgina, no un H1 amb obertura, així que damunt de la tira de la portada només hi ha la línia del foli.
- Una zona segura més ampla que la forma de la seva cel·la deixa la imatge amb bandes del fons de la vinyeta, i la composició avisa amb `comicPanelLetterbox`.

## Crèdits

- Recepta: Ignacio Ferro ([@drnachio](https://github.com/drnachio))
- Imatges: Strip panel: Pip walks into the bakery: Generated With Diffusion Models, original
- Imatges: Strip panel: Otto and the big croissant: Generated With Diffusion Models, original
- Imatges: Strip panel: Pip and the croissant on the counter: Generated With Diffusion Models, original
- Imatges: Strip panel: Otto eats the croissant: Generated With Diffusion Models, original
- Imatges: Strip panel: fishing on the floe: Generated With Diffusion Models, original
- Imatges: Strip panel: Pip and his fish: Generated With Diffusion Models, original
- Imatges: Strip panel: Otto lands a boot: Generated With Diffusion Models, original
- Tipus de lletra: Newsreader (OFL-1.1), Archivo Narrow (OFL-1.1), Comic Neue (OFL-1.1), Bangers (OFL-1.1), Noto Serif SC (OFL-1.1), Noto Sans SC (OFL-1.1), ZCOOL KuaiLe (OFL-1.1), ZCOOL QingKe HuangYou (OFL-1.1), Noto Serif JP (OFL-1.1), Noto Sans JP (OFL-1.1), Zen Antique (OFL-1.1), Dela Gothic One (OFL-1.1), Noto Naskh Arabic (OFL-1.1), Noto Kufi Arabic (OFL-1.1), Playpen Sans Arabic (OFL-1.1), Lalezar (OFL-1.1)
- Codi: MIT · Contingut d'exemple: CC-BY-4.0

## Relacionades

- [Núm. 152 · Una pàgina d'àlbum en línia clara amb cartel·les de narració](https://postext.dev/ca/cookbook/tebeo-album-page.md): Una pàgina d'àlbum francobelga en quatre tires: vinyetes de marc fi, cartel·les grogues als racons i bafarades en minúscules, des de la config comics. · Nivell 2 (Intermedi) · Còmics
- [Núm. 154 · Una pàgina de còmic a doble pàgina](https://postext.dev/ca/cookbook/comic-double-spread.md): Un :::page amb la marca spread estén una sola divisió sobre dues pàgines encarades: una panoràmica creua el llom i la tira de sota es parteix al plec. · Nivell 2 (Intermedi) · Còmics
- [Núm. 144 · Les mateixes vinyetes en tres divisions de pàgina](https://postext.dev/ca/cookbook/comic-page-splitters.md): Cinc vinyetes en tres arbres de divisió: split a :::page talla la pàgina i la zona segura de cada imatge en manté a la vista el que importa. · Nivell 2 (Intermedi) · Còmics