| import './view.js' |
| import { createTOCView } from './ui/tree.js' |
| import { createMenu } from './ui/menu.js' |
| import { Overlayer } from './overlayer.js' |
|
|
| const getCSS = ({ spacing, justify, hyphenate }) => ` |
| @namespace epub "http://www.idpf.org/2007/ops"; |
| html { |
| color-scheme: light dark; |
| } |
| /* https://github.com/whatwg/html/issues/5426 */ |
| @media (prefers-color-scheme: dark) { |
| a:link { |
| color: lightblue; |
| } |
| } |
| p, li, blockquote, dd { |
| line-height: ${spacing}; |
| text-align: ${justify ? 'justify' : 'start'}; |
| -webkit-hyphens: ${hyphenate ? 'auto' : 'manual'}; |
| hyphens: ${hyphenate ? 'auto' : 'manual'}; |
| -webkit-hyphenate-limit-before: 3; |
| -webkit-hyphenate-limit-after: 2; |
| -webkit-hyphenate-limit-lines: 2; |
| hanging-punctuation: allow-end last; |
| widows: 2; |
| } |
| /* prevent the above from overriding the align attribute */ |
| [align="left"] { text-align: left; } |
| [align="right"] { text-align: right; } |
| [align="center"] { text-align: center; } |
| [align="justify"] { text-align: justify; } |
| |
| pre { |
| white-space: pre-wrap !important; |
| } |
| aside[epub|type~="endnote"], |
| aside[epub|type~="footnote"], |
| aside[epub|type~="note"], |
| aside[epub|type~="rearnote"] { |
| display: none; |
| } |
| ` |
|
|
| const $ = document.querySelector.bind(document) |
|
|
| const locales = 'en' |
| const percentFormat = new Intl.NumberFormat(locales, { style: 'percent' }) |
| const listFormat = new Intl.ListFormat(locales, { style: 'short', type: 'conjunction' }) |
|
|
| const formatLanguageMap = x => { |
| if (!x) return '' |
| if (typeof x === 'string') return x |
| const keys = Object.keys(x) |
| return x[keys[0]] |
| } |
|
|
| const formatOneContributor = contributor => typeof contributor === 'string' |
| ? contributor : formatLanguageMap(contributor?.name) |
|
|
| const formatContributor = contributor => Array.isArray(contributor) |
| ? listFormat.format(contributor.map(formatOneContributor)) |
| : formatOneContributor(contributor) |
|
|
| class Reader { |
| #tocView |
| style = { |
| spacing: 1.4, |
| justify: true, |
| hyphenate: true, |
| } |
| annotations = new Map() |
| annotationsByValue = new Map() |
| closeSideBar() { |
| $('#dimming-overlay').classList.remove('show') |
| $('#side-bar').classList.remove('show') |
| } |
| constructor() { |
| $('#side-bar-button').addEventListener('click', () => { |
| $('#dimming-overlay').classList.add('show') |
| $('#side-bar').classList.add('show') |
| }) |
| $('#dimming-overlay').addEventListener('click', () => this.closeSideBar()) |
|
|
| const menu = createMenu([ |
| { |
| name: 'layout', |
| label: 'Layout', |
| type: 'radio', |
| items: [ |
| ['Paginated', 'paginated'], |
| ['Scrolled', 'scrolled'], |
| ], |
| onclick: value => { |
| this.view?.renderer.setAttribute('flow', value) |
| }, |
| }, |
| ]) |
| menu.element.classList.add('menu') |
|
|
| $('#menu-button').append(menu.element) |
| $('#menu-button > button').addEventListener('click', () => |
| menu.element.classList.toggle('show')) |
| menu.groups.layout.select('paginated') |
| } |
| async open(file) { |
| this.view = document.createElement('foliate-view') |
| document.body.append(this.view) |
| await this.view.open(file) |
| this.view.addEventListener('load', this.#onLoad.bind(this)) |
| this.view.addEventListener('relocate', this.#onRelocate.bind(this)) |
|
|
| const { book } = this.view |
| book.transformTarget?.addEventListener('data', ({ detail }) => { |
| detail.data = Promise.resolve(detail.data).catch(e => { |
| console.error(new Error(`Failed to load ${detail.name}`, { cause: e })) |
| return '' |
| }) |
| }) |
| this.view.renderer.setStyles?.(getCSS(this.style)) |
| this.view.renderer.next() |
|
|
| $('#header-bar').style.visibility = 'visible' |
| $('#nav-bar').style.visibility = 'visible' |
| $('#left-button').addEventListener('click', () => this.view.goLeft()) |
| $('#right-button').addEventListener('click', () => this.view.goRight()) |
|
|
| const slider = $('#progress-slider') |
| slider.dir = book.dir |
| slider.addEventListener('input', e => |
| this.view.goToFraction(parseFloat(e.target.value))) |
| for (const fraction of this.view.getSectionFractions()) { |
| const option = document.createElement('option') |
| option.value = fraction |
| $('#tick-marks').append(option) |
| } |
|
|
| document.addEventListener('keydown', this.#handleKeydown.bind(this)) |
|
|
| const title = formatLanguageMap(book.metadata?.title) || 'Untitled Book' |
| document.title = title |
| $('#side-bar-title').innerText = title |
| $('#side-bar-author').innerText = formatContributor(book.metadata?.author) |
| Promise.resolve(book.getCover?.())?.then(blob => |
| blob ? $('#side-bar-cover').src = URL.createObjectURL(blob) : null) |
|
|
| const toc = book.toc |
| if (toc) { |
| this.#tocView = createTOCView(toc, href => { |
| this.view.goTo(href).catch(e => console.error(e)) |
| this.closeSideBar() |
| }) |
| $('#toc-view').append(this.#tocView.element) |
| } |
|
|
| |
| const bookmarks = await book.getCalibreBookmarks?.() |
| if (bookmarks) { |
| const { fromCalibreHighlight } = await import('./epubcfi.js') |
| for (const obj of bookmarks) { |
| if (obj.type === 'highlight') { |
| const value = fromCalibreHighlight(obj) |
| const color = obj.style.which |
| const note = obj.notes |
| const annotation = { value, color, note } |
| const list = this.annotations.get(obj.spine_index) |
| if (list) list.push(annotation) |
| else this.annotations.set(obj.spine_index, [annotation]) |
| this.annotationsByValue.set(value, annotation) |
| } |
| } |
| this.view.addEventListener('create-overlay', e => { |
| const { index } = e.detail |
| const list = this.annotations.get(index) |
| if (list) for (const annotation of list) |
| this.view.addAnnotation(annotation) |
| }) |
| this.view.addEventListener('draw-annotation', e => { |
| const { draw, annotation } = e.detail |
| const { color } = annotation |
| draw(Overlayer.highlight, { color }) |
| }) |
| this.view.addEventListener('show-annotation', e => { |
| const annotation = this.annotationsByValue.get(e.detail.value) |
| if (annotation.note) alert(annotation.note) |
| }) |
| } |
| } |
| #handleKeydown(event) { |
| const k = event.key |
| if (k === 'ArrowLeft' || k === 'h') this.view.goLeft() |
| else if(k === 'ArrowRight' || k === 'l') this.view.goRight() |
| } |
| #onLoad({ detail: { doc } }) { |
| doc.addEventListener('keydown', this.#handleKeydown.bind(this)) |
| } |
| #onRelocate({ detail }) { |
| const { fraction, location, tocItem, pageItem } = detail |
| const percent = percentFormat.format(fraction) |
| const loc = pageItem |
| ? `Page ${pageItem.label}` |
| : `Loc ${location.current}` |
| const slider = $('#progress-slider') |
| slider.style.visibility = 'visible' |
| slider.value = fraction |
| slider.title = `${percent} · ${loc}` |
| if (tocItem?.href) this.#tocView?.setCurrentHref?.(tocItem.href) |
| } |
| } |
|
|
| const open = async file => { |
| document.body.removeChild($('#drop-target')) |
| const reader = new Reader() |
| globalThis.reader = reader |
| await reader.open(file) |
| } |
|
|
| const dragOverHandler = e => e.preventDefault() |
| const dropHandler = e => { |
| e.preventDefault() |
| const item = Array.from(e.dataTransfer.items) |
| .find(item => item.kind === 'file') |
| if (item) { |
| const entry = item.webkitGetAsEntry() |
| open(entry.isFile ? item.getAsFile() : entry).catch(e => console.error(e)) |
| } |
| } |
| const dropTarget = $('#drop-target') |
| dropTarget.addEventListener('drop', dropHandler) |
| dropTarget.addEventListener('dragover', dragOverHandler) |
|
|
| $('#file-input').addEventListener('change', e => |
| open(e.target.files[0]).catch(e => console.error(e))) |
| $('#file-button').addEventListener('click', () => $('#file-input').click()) |
|
|
| const params = new URLSearchParams(location.search) |
| const url = params.get('url') |
| if (url) open(url).catch(e => console.error(e)) |
| else dropTarget.style.visibility = 'visible' |
|
|
