1044 lines
44 KiB
JavaScript
1044 lines
44 KiB
JavaScript
/**
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* Book Texture Renderer Module
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* Draws the virtual book pages directly into texture-space canvases.
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*/
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import { BaseModule } from './base-module.js';
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class BookTextureRendererModule extends BaseModule {
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constructor() {
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super('book-texture-renderer', 'Book Texture Renderer');
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this.dependencies = ['book-page-format', 'book-pagination', 'localization', 'webgl-page-cache'];
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this.pageFormat = null;
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this.pagination = null;
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this.localization = null;
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this.pageCache = null;
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this.metrics = null;
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this.canvases = {
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left: null,
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right: null
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};
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this.contexts = {
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left: null,
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right: null
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};
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this.hitMaps = {
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left: [],
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right: []
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};
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this.currentSpread = null;
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this.activeAnimations = new Map();
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this.revealedBlockIds = new Set();
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this.pendingRevealBlockIds = new Set();
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this.preparedRevealCache = new Map();
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this.revealBounds = null;
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this.revealWords = null;
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this.revealBaseCanvases = null;
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this.revealPublishBlockIds = null;
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this.lastDrawSignature = null;
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this.lastDrawSkipLoggedAt = 0;
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this.animationFrameId = null;
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this.lastAnimationFrameAt = 0;
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this.targetFrameDurationMs = 1000 / 60;
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this.pipelineTimings = [];
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this.imageCache = new Map();
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this.pendingPageCacheWrites = new Map();
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this.pageContentVersions = new Map();
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this.bindMethods([
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'initialize',
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'markPipelineTiming',
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'waitForTextureFonts',
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'ensureTextureFontFace',
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'createPageCanvases',
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'drawSpread',
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'getDrawSignature',
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'cloneCanvas',
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'drawPageBase',
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'drawPageMeta',
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'drawTitlePage',
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'drawPageNumber',
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'drawPageLines',
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'drawImageRecord',
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'resolveImageSource',
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'getCachedImage',
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'drawImageFitted',
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'drawLine',
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'drawWord',
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'recordRevealRect',
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'getInlineStyleState',
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'updateInlineStyleState',
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'getCanvasFont',
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'applyTextStyle',
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'getPageContent',
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'buildLineSegments',
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'startRevealAnimation',
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'prepareRevealBlock',
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'hasPreparedRevealBlock',
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'createAnimationState',
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'publishPreparedReveal',
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'startPreparedRevealAnimation',
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'fastForwardAnimations',
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'stopAnimations',
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'getBlockSides',
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'getAnimatedSides',
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'markPendingReveal',
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'requestAnimationFrame',
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'tickAnimations',
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'publishSpread',
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'cachePublishedPages',
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'getPageCacheWriteKey',
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'isOlderPageMeta',
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'schedulePageCacheWrite',
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'getPageCanvas',
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'getHitMap',
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'handlePageCountChanged'
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]);
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}
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async initialize() {
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this.pageFormat = this.getModule('book-page-format');
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this.pagination = this.getModule('book-pagination');
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this.localization = this.getModule('localization');
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this.pageCache = this.getModule('webgl-page-cache');
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window.BookTextureRendererDebug = {
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pipelineTimings: this.pipelineTimings
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};
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this.reportProgress(10, 'Waiting for book fonts');
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await this.waitForTextureFonts();
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this.reportProgress(20, 'Preparing page texture canvases');
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this.createPageCanvases();
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this.addEventListener(document, 'webgl-book:page-count-changed', this.handlePageCountChanged);
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this.addEventListener(document, 'book-pagination:spread-updated', (event) => {
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const spread = event.detail?.spread || this.pagination?.getCurrentSpread?.();
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const latestBlockId = event.detail?.latestBlockId;
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const latestRenderedBlockId = Math.max(0, Number(event.detail?.latestRenderedBlockId || 0));
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this.currentSpread = spread || { left: [], right: [] };
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if (latestBlockId && Number(latestBlockId) > latestRenderedBlockId) {
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this.markPendingReveal(latestBlockId);
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return;
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}
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this.drawSpread(this.currentSpread);
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});
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this.addEventListener(document, 'book-texture:reveal-block', (event) => {
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this.startRevealAnimation(event.detail || {});
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});
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this.addEventListener(document, 'book-texture:prepare-reveal-block', (event) => {
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this.prepareRevealBlock(event.detail || {});
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});
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this.addEventListener(document, 'book-texture:fast-forward', this.fastForwardAnimations);
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this.addEventListener(document, 'ui:command', (event) => {
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if (event.detail?.type === 'continue') this.fastForwardAnimations();
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});
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this.addEventListener(document, 'story:manual-scroll', this.fastForwardAnimations);
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this.addEventListener(document, 'story:history-restoring', this.stopAnimations);
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this.reportProgress(100, 'Book texture renderer ready');
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return true;
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}
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markPipelineTiming(name, detail = {}) {
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const entry = {
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name,
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at: performance.now(),
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detail
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};
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this.pipelineTimings.push(entry);
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if (this.pipelineTimings.length > 120) this.pipelineTimings.splice(0, this.pipelineTimings.length - 120);
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document.documentElement.dataset.webglTexturePipeline = JSON.stringify(this.pipelineTimings);
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return entry;
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}
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async waitForTextureFonts() {
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if (!document.fonts) return;
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await Promise.all([
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this.ensureTextureFontFace('EB Garamond', '/fonts/EBGaramond12-Regular.otf', { style: 'normal', weight: '400' }),
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this.ensureTextureFontFace('EB Garamond', '/fonts/EBGaramond12-Italic.otf', { style: 'italic', weight: '400' }),
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this.ensureTextureFontFace('EB Garamond 12', '/fonts/EBGaramond12/webfonts/EBGaramond-Regular.woff2'),
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this.ensureTextureFontFace('EB Garamond Initials', '/fonts/EB-Garamond-Initials/EBGaramond-0.016/otf/EBGaramond-Initials.otf')
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]);
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await Promise.all([
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document.fonts.load('24px "EB Garamond"'),
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document.fonts.load('italic 24px "EB Garamond"'),
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document.fonts.load('bold 24px "EB Garamond"'),
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document.fonts.load('italic bold 24px "EB Garamond"'),
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document.fonts.load('24px "EB Garamond 12"'),
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document.fonts.load('72px "EB Garamond Initials"')
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]);
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await document.fonts.ready;
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}
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async ensureTextureFontFace(family, url, descriptors = {}) {
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if (!window.FontFace) return;
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const face = new FontFace(family, `url(${url})`, descriptors);
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const loadedFace = await face.load();
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document.fonts.add(loadedFace);
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}
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createPageCanvases(textureWidth = this.pageFormat?.getTextureWidth?.() || 3072) {
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this.metrics = this.pageFormat.getTextureMetrics(textureWidth);
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['left', 'right'].forEach((side) => {
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const canvas = document.createElement('canvas');
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canvas.width = this.metrics.width;
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canvas.height = this.metrics.height;
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this.canvases[side] = canvas;
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this.contexts[side] = canvas.getContext('2d');
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});
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}
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drawSpread(spread = null, sides = null, options = {}) {
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const previousSpread = this.currentSpread;
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this.currentSpread = spread || { left: [], right: [] };
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const sidesToDraw = Array.isArray(sides) && sides.length ? sides : ['left', 'right'];
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const hasReveal = this.revealPublishBlockIds && this.revealPublishBlockIds.size > 0;
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const drawSignature = this.getDrawSignature(this.currentSpread, sidesToDraw);
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if (!options.preloadOnly && !hasReveal && drawSignature === this.lastDrawSignature) {
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const now = performance.now();
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if (now - this.lastDrawSkipLoggedAt > 1000) {
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this.lastDrawSkipLoggedAt = now;
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this.markPipelineTiming('drawSpread:skip', { sides: sidesToDraw });
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}
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if (options.preloadOnly) this.currentSpread = previousSpread;
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return null;
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}
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this.markPipelineTiming('drawSpread:start', {
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sides: sidesToDraw,
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revealBlockIds: this.revealPublishBlockIds ? Array.from(this.revealPublishBlockIds) : [],
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preloadOnly: Boolean(options.preloadOnly)
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});
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this.revealBounds = { left: null, right: null };
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this.revealWords = { left: [], right: [] };
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this.revealBaseCanvases = { left: null, right: null };
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sidesToDraw.forEach((side) => {
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if (!this.canvases[side]) return;
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this.drawPageBase(side);
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if (hasReveal) this.revealBaseCanvases[side] = this.cloneCanvas(this.canvases[side]);
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this.drawPageMeta(side, 'before-lines');
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this.drawPageLines(side, this.currentSpread?.[side] || []);
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this.drawPageMeta(side, 'after-lines');
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});
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const published = this.publishSpread(sidesToDraw, options);
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this.markPipelineTiming('drawSpread:end', {
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sides: sidesToDraw,
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preloadOnly: Boolean(options.preloadOnly)
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});
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this.revealBounds = null;
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this.revealWords = null;
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this.revealBaseCanvases = null;
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this.revealPublishBlockIds = null;
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if (!options.preloadOnly && !hasReveal) this.lastDrawSignature = drawSignature;
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if (options.preloadOnly) this.currentSpread = previousSpread;
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return published;
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}
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getDrawSignature(spread = null, sides = []) {
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const source = spread || {};
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return sides.map(side => {
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const lines = Array.isArray(source[side]) ? source[side] : [];
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const meta = source.pageMeta?.[side] || {};
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const ids = lines.map(line => `${line.type || 'line'}:${line.blockId ?? ''}:${line.lineIndex ?? ''}:${line.pageLine ?? ''}:${line.lineCount ?? ''}:${line.line?.nodes?.length || 0}`).join(',');
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return `${side}:${meta.kind || ''}:${meta.pageIndex ?? ''}:${meta.pageNumber ?? ''}:${meta.omitPageNumber === true}[${ids}]`;
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}).join('|');
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}
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cloneCanvas(canvas) {
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if (!canvas) return null;
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const clone = document.createElement('canvas');
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clone.width = canvas.width;
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clone.height = canvas.height;
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const context = clone.getContext('2d');
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if (context) context.drawImage(canvas, 0, 0);
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return clone;
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}
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drawPageBase(side) {
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const canvas = this.canvases[side];
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const ctx = this.contexts[side];
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if (!canvas || !ctx) return;
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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ctx.fillStyle = '#f2ead0';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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const shade = ctx.createLinearGradient(0, 0, canvas.width, 0);
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if (side === 'left') {
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shade.addColorStop(0, 'rgba(255, 255, 255, 0.06)');
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shade.addColorStop(0.78, 'rgba(255, 255, 255, 0)');
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shade.addColorStop(1, 'rgba(70, 48, 28, 0.08)');
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} else {
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shade.addColorStop(0, 'rgba(70, 48, 28, 0.08)');
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shade.addColorStop(0.22, 'rgba(255, 255, 255, 0)');
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shade.addColorStop(1, 'rgba(255, 255, 255, 0.06)');
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}
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ctx.fillStyle = shade;
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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this.hitMaps[side] = [];
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}
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drawPageMeta(side, phase = 'after-lines') {
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const meta = this.currentSpread?.pageMeta?.[side] || null;
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if (!meta) return;
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if (phase === 'before-lines' && meta.kind === 'title') this.drawTitlePage(side);
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if (phase === 'after-lines') this.drawPageNumber(side, meta);
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}
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drawTitlePage(side) {
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const ctx = this.contexts[side];
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if (!ctx || !this.metrics) return;
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const content = this.getPageContent(side);
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const titleText = document.getElementById('game_title')?.textContent?.trim() || '';
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const authorText = document.getElementById('game_author')?.textContent?.trim() || '';
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const subtitleText = document.getElementById('game_subtitle')?.textContent?.trim() || '';
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const ornamentText = document.querySelector('#start_prompt .separator, #start_prompt .ornament, #start_prompt [class*="separator"]')?.textContent?.trim() || '';
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const legalText = document.getElementById('game_legal_text')?.textContent?.trim() || '';
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const centerX = content.x + content.width * 0.5;
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const font = this.metrics.typography.fontFamily;
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ctx.save();
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ctx.fillStyle = 'rgba(31, 19, 10, 0.9)';
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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if ('fontKerning' in ctx) ctx.fontKerning = 'normal';
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if (authorText) {
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ctx.font = `italic ${Math.round(this.metrics.bodyFontSizePx * 0.86)}px ${font}`;
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ctx.fillText(authorText, centerX, content.y + content.height * 0.18);
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}
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if (titleText) {
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ctx.font = `${Math.round(this.metrics.bodyFontSizePx * 1.55)}px ${font}`;
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if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = 'small-caps';
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ctx.fillText(titleText, centerX, content.y + content.height * 0.28);
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if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = 'normal';
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}
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if (subtitleText) {
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ctx.font = `${Math.round(this.metrics.bodyFontSizePx * 0.94)}px ${font}`;
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ctx.fillText(subtitleText, centerX, content.y + content.height * 0.39);
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}
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if (ornamentText) {
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ctx.font = `${Math.round(this.metrics.bodyFontSizePx * 1.3)}px ${font}`;
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ctx.fillText(ornamentText, centerX, content.y + content.height * 0.52);
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}
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if (legalText) {
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ctx.font = `${Math.round(this.metrics.bodyFontSizePx * 0.62)}px ${font}`;
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ctx.fillText(legalText, centerX, content.y + content.height * 0.96);
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}
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ctx.restore();
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}
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drawPageNumber(side, meta = {}) {
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if (meta.omitPageNumber || meta.pageNumber == null) return;
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const ctx = this.contexts[side];
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if (!ctx || !this.metrics) return;
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const content = this.getPageContent(side);
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ctx.save();
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ctx.fillStyle = 'rgba(31, 19, 10, 0.74)';
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ctx.textAlign = 'center';
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ctx.textBaseline = 'middle';
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ctx.font = `${Math.round(this.metrics.bodyFontSizePx * 0.68)}px ${this.metrics.typography.fontFamily}`;
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ctx.fillText(String(meta.pageNumber), content.x + content.width * 0.5, content.y + content.height + this.metrics.margins.bottom * 0.48);
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ctx.restore();
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}
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drawPageLines(side, lines = []) {
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const ctx = this.contexts[side];
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if (!ctx || !this.metrics || !Array.isArray(lines)) return;
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ctx.save();
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ctx.fillStyle = 'rgba(31, 19, 10, 0.86)';
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ctx.textBaseline = 'alphabetic';
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if ('fontKerning' in ctx) ctx.fontKerning = 'normal';
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if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = 'normal';
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lines.forEach(line => {
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if (line?.type === 'image' || line?.kind === 'image') this.drawImageRecord(ctx, line, side);
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else this.drawLine(ctx, line, side);
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});
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ctx.restore();
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}
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drawImageRecord(ctx, lineRecord = {}, side = 'left') {
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const content = this.getPageContent(side);
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const layout = lineRecord.metadata?.imageLayout || {};
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const rect = layout.textureRect || {};
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const x = content.x + Number(rect.x || 0);
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const y = content.y + Number(rect.y || 0);
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const width = Math.max(1, Number(rect.width || content.width));
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const height = Math.max(1, Number(rect.height || this.metrics.typographyLineHeightPx));
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const src = this.resolveImageSource(lineRecord.metadata || {});
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ctx.save();
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if (src) {
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const image = this.getCachedImage(src);
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if (image?.complete && image.naturalWidth > 0) {
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this.drawImageFitted(ctx, image, x, y, width, height);
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}
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}
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ctx.restore();
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}
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resolveImageSource(metadata = {}) {
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const explicit = String(metadata.url || metadata.src || '').trim();
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if (explicit) return explicit;
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const filename = String(metadata.filename || '').trim();
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if (!filename) return '';
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if (/^(https?:|data:|blob:|\/)/i.test(filename)) return filename;
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return `/images/${filename.replace(/^images[\\/]/i, '').replace(/\\/g, '/')}`;
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}
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getCachedImage(src) {
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if (!src) return null;
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if (this.imageCache.has(src)) return this.imageCache.get(src);
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const image = new Image();
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image.decoding = 'async';
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image.onload = () => this.drawSpread(this.currentSpread || this.pagination?.getCurrentSpread?.());
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image.onerror = () => this.markPipelineTiming('image:load-error', { src });
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image.src = src;
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this.imageCache.set(src, image);
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return image;
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}
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drawImageFitted(ctx, image, x, y, width, height) {
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const sourceWidth = image.naturalWidth || image.width || 1;
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const sourceHeight = image.naturalHeight || image.height || 1;
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const sourceAspect = sourceWidth / sourceHeight;
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const targetAspect = width / height;
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let sx = 0;
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let sy = 0;
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let sw = sourceWidth;
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let sh = sourceHeight;
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if (sourceAspect > targetAspect) {
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sw = sourceHeight * targetAspect;
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sx = (sourceWidth - sw) * 0.5;
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} else if (sourceAspect < targetAspect) {
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sh = sourceWidth / targetAspect;
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sy = (sourceHeight - sh) * 0.5;
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}
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ctx.drawImage(image, sx, sy, sw, sh, x, y, width, height);
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}
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drawLine(ctx, lineRecord = {}, side = 'left') {
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const metrics = this.metrics;
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const content = this.getPageContent(side);
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const fontPx = Math.max(1, Number(lineRecord.fontPx || 22));
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const lineHeightPx = Math.max(fontPx + 2, Number(lineRecord.lineHeightPx || metrics.typographyLineHeightPx || 30));
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const line = lineRecord.line || {};
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const nodes = Array.isArray(line.nodes) ? line.nodes : [];
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const baseY = content.y + (Number(lineRecord.pageLine || 0) * lineHeightPx) + fontPx;
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const ratio = line.isFinal || line.align === 'center' ? 0 : Number(line.ratio || 0);
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const naturalWidth = nodes.reduce((sum, node) => {
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if (node.type === 'box' || node.type === 'glue') return sum + Number(node.width || 0);
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return sum;
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}, 0);
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const centerOffset = line.align === 'center'
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? Math.max(0, (content.width - naturalWidth) / 2)
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: Number(line.offset || 0);
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let x = content.x + centerOffset;
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const smallCaps = Boolean(lineRecord.smallCaps || line.smallCaps);
|
|
const previousVariantCaps = 'fontVariantCaps' in ctx ? ctx.fontVariantCaps : null;
|
|
const previousLetterSpacing = 'letterSpacing' in ctx ? ctx.letterSpacing : null;
|
|
const baseStyle = this.getInlineStyleState(line.activeStyleTags || [], {
|
|
italic: lineRecord.fontStyle === 'italic'
|
|
});
|
|
|
|
if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = smallCaps ? 'all-small-caps' : 'normal';
|
|
if ('letterSpacing' in ctx) ctx.letterSpacing = smallCaps ? `${fontPx * 0.012}px` : '0px';
|
|
this.applyTextStyle(ctx, fontPx, smallCaps, baseStyle);
|
|
if (lineRecord.dropCapText) {
|
|
ctx.save();
|
|
const dropCapFontPx = Math.round(fontPx * 2.68);
|
|
const dropCapX = content.x;
|
|
const dropCapY = content.y + (Number(lineRecord.pageLine || 0) * lineHeightPx) + (fontPx * 0.25);
|
|
ctx.font = `${dropCapFontPx}px "EB Garamond Initials", ${metrics.typography.fontFamily}`;
|
|
ctx.textBaseline = 'top';
|
|
ctx.fillText(String(lineRecord.dropCapText), dropCapX, dropCapY);
|
|
this.recordRevealRect(side, lineRecord, dropCapX, dropCapY, fontPx * 2.9, dropCapFontPx * 0.9, 0);
|
|
ctx.restore();
|
|
if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = smallCaps ? 'all-small-caps' : 'normal';
|
|
if ('letterSpacing' in ctx) ctx.letterSpacing = smallCaps ? `${fontPx * 0.012}px` : '0px';
|
|
this.applyTextStyle(ctx, fontPx, smallCaps, baseStyle);
|
|
}
|
|
this.buildLineSegments(ctx, nodes, line, ratio, baseStyle).forEach((segment) => {
|
|
this.drawWord(ctx, segment, x + segment.x, baseY, lineRecord, segment.wordIndex, side, fontPx, lineHeightPx, smallCaps);
|
|
});
|
|
if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = previousVariantCaps || 'normal';
|
|
if ('letterSpacing' in ctx) ctx.letterSpacing = previousLetterSpacing || '0px';
|
|
}
|
|
|
|
getInlineStyleState(tags = [], base = {}) {
|
|
const state = {
|
|
bold: Boolean(base.bold),
|
|
italic: Boolean(base.italic)
|
|
};
|
|
tags.forEach(tag => {
|
|
if (tag?.bold) state.bold = true;
|
|
if (tag?.italic) state.italic = true;
|
|
});
|
|
return state;
|
|
}
|
|
|
|
updateInlineStyleState(stack = [], value = '') {
|
|
const text = String(value || '');
|
|
if (!text.startsWith('<')) return stack;
|
|
if (text.startsWith('</')) {
|
|
if (stack.length) stack.pop();
|
|
return stack;
|
|
}
|
|
const template = document.createElement('div');
|
|
template.innerHTML = text;
|
|
const element = template.firstElementChild;
|
|
if (!element) return stack;
|
|
const tagName = element.tagName.toLowerCase();
|
|
const style = String(element.getAttribute('style') || '').toLowerCase();
|
|
const className = String(element.getAttribute('class') || '').toLowerCase();
|
|
stack.push({
|
|
tagName,
|
|
bold: tagName === 'strong' || tagName === 'b' || /font-weight\s*:\s*(bold|[6-9]00)/.test(style) || className.includes('bold'),
|
|
italic: tagName === 'em' || tagName === 'i' || /font-style\s*:\s*italic/.test(style) || className.includes('italic')
|
|
});
|
|
return stack;
|
|
}
|
|
|
|
getCanvasFont(fontPx, smallCaps = false, style = {}) {
|
|
const metrics = this.metrics;
|
|
return [
|
|
style.italic ? 'italic' : '',
|
|
smallCaps ? 'small-caps' : '',
|
|
style.bold ? '700' : '',
|
|
`${fontPx}px`,
|
|
metrics.typography.fontFamily
|
|
].filter(Boolean).join(' ');
|
|
}
|
|
|
|
applyTextStyle(ctx, fontPx, smallCaps = false, style = {}) {
|
|
if ('fontVariantCaps' in ctx) ctx.fontVariantCaps = smallCaps ? 'all-small-caps' : 'normal';
|
|
ctx.font = this.getCanvasFont(fontPx, smallCaps, style);
|
|
}
|
|
|
|
getPageContent(side = 'left') {
|
|
return this.metrics?.contentBySide?.[side] || this.metrics?.content || {
|
|
x: 0,
|
|
y: 0,
|
|
width: this.metrics?.width || 1,
|
|
height: this.metrics?.height || 1
|
|
};
|
|
}
|
|
|
|
buildLineSegments(ctx, nodes = [], line = {}, ratio = 0, baseStyle = {}) {
|
|
const segments = [];
|
|
let x = 0;
|
|
let currentSegment = null;
|
|
let previousWasGlue = true;
|
|
let currentWordIndex = -1;
|
|
const styleStack = Array.isArray(line.activeStyleTags) ? line.activeStyleTags.map(tag => ({ ...tag })) : [];
|
|
|
|
nodes.forEach((node, index) => {
|
|
if (!node) return;
|
|
if (node.type === 'box' && node.value) {
|
|
const value = String(node.value);
|
|
const width = Number(node.width || ctx.measureText(value).width || 0);
|
|
const style = this.getInlineStyleState(styleStack, baseStyle);
|
|
if (currentSegment && !previousWasGlue && currentSegment.style.bold === style.bold && currentSegment.style.italic === style.italic) {
|
|
currentSegment.value += value;
|
|
currentSegment.width += width;
|
|
} else {
|
|
if (previousWasGlue) currentWordIndex += 1;
|
|
currentSegment = {
|
|
value,
|
|
x,
|
|
width,
|
|
wordIndex: Math.max(0, currentWordIndex),
|
|
style
|
|
};
|
|
segments.push(currentSegment);
|
|
}
|
|
x += width;
|
|
previousWasGlue = false;
|
|
} else if (node.type === 'glue' && node.width !== 0) {
|
|
let width = Number(node.width || 0);
|
|
if (ratio > 0) width += Number(node.stretch || 0) * ratio;
|
|
if (ratio < 0) width += Number(node.shrink || 0) * ratio;
|
|
x += width;
|
|
previousWasGlue = true;
|
|
currentSegment = null;
|
|
} else if (node.type === 'penalty' && node.penalty === 100) {
|
|
const isLineEndHyphen = Boolean(line.hyphenated && index === nodes.length - 1 && currentSegment);
|
|
if (isLineEndHyphen) {
|
|
const hyphenWidth = Number(node.width || ctx.measureText('-').width || 0);
|
|
currentSegment.value += '-';
|
|
currentSegment.width += hyphenWidth;
|
|
x += hyphenWidth;
|
|
}
|
|
previousWasGlue = false;
|
|
} else if (node.type === 'tag') {
|
|
this.updateInlineStyleState(styleStack, node.value);
|
|
}
|
|
});
|
|
|
|
return segments;
|
|
}
|
|
|
|
drawWord(ctx, segment, x, baseY, lineRecord, localWordIndex, side, fontPx, lineHeightPx, smallCaps = false) {
|
|
const value = segment?.value || '';
|
|
this.applyTextStyle(ctx, fontPx, smallCaps, segment?.style || {});
|
|
ctx.fillText(value, x, baseY);
|
|
const width = Number(segment?.width || 0) || ctx.measureText(value).width || fontPx;
|
|
this.recordRevealRect(side, lineRecord, x, baseY - fontPx, width, lineHeightPx, localWordIndex);
|
|
}
|
|
|
|
recordRevealRect(side, lineRecord, x, y, width, height, localWordIndex = 0) {
|
|
if (!this.revealBounds || !this.revealPublishBlockIds) return;
|
|
const blockId = String(lineRecord?.blockId ?? '');
|
|
if (!blockId || !this.revealPublishBlockIds.has(blockId)) return;
|
|
const animation = this.activeAnimations.get(blockId);
|
|
if (!animation || animation.completed) return;
|
|
const padding = Math.max(2, Number(lineRecord.fontPx || 18) * 0.12);
|
|
const nextRect = {
|
|
x: Math.max(0, x - padding),
|
|
y: Math.max(0, y - padding),
|
|
right: Math.min(this.metrics.width, x + width + padding),
|
|
bottom: Math.min(this.metrics.height, y + height + padding)
|
|
};
|
|
const current = this.revealBounds[side];
|
|
this.revealBounds[side] = current ? {
|
|
x: Math.min(current.x, nextRect.x),
|
|
y: Math.min(current.y, nextRect.y),
|
|
right: Math.max(current.right, nextRect.right),
|
|
bottom: Math.max(current.bottom, nextRect.bottom),
|
|
blockIds: current.blockIds.add(blockId)
|
|
} : {
|
|
...nextRect,
|
|
blockIds: new Set([blockId])
|
|
};
|
|
const globalWordIndex = Math.max(0, Number(lineRecord.blockWordStart || 0) + Number(localWordIndex || 0));
|
|
const timing = Array.isArray(animation.wordTimings) ? animation.wordTimings[globalWordIndex] : null;
|
|
if (!timing || !this.revealWords?.[side]) return;
|
|
this.revealWords[side].push({
|
|
blockId,
|
|
wordIndex: globalWordIndex,
|
|
rect: {
|
|
x: nextRect.x / this.metrics.width,
|
|
y: nextRect.y / this.metrics.height,
|
|
width: Math.max(0.001, (nextRect.right - nextRect.x) / this.metrics.width),
|
|
height: Math.max(0.001, (nextRect.bottom - nextRect.y) / this.metrics.height)
|
|
},
|
|
timing: {
|
|
delay: Math.max(0, Number(timing.delay || 0)),
|
|
duration: Math.max(1, Number(timing.duration || 1))
|
|
}
|
|
});
|
|
}
|
|
|
|
startRevealAnimation(detail = {}) {
|
|
const blockId = detail.blockId ?? detail.id ?? null;
|
|
if (blockId == null || !Array.isArray(detail.wordTimings)) return;
|
|
const existing = this.activeAnimations.get(String(blockId));
|
|
if (existing && existing.prepared) {
|
|
this.startPreparedRevealAnimation(blockId);
|
|
return;
|
|
}
|
|
this.activeAnimations.set(String(blockId), {
|
|
blockId,
|
|
wordTimings: detail.wordTimings,
|
|
startedAt: performance.now(),
|
|
totalDuration: Math.max(
|
|
Number(detail.totalDuration || 0),
|
|
...detail.wordTimings.map(timing => Number(timing.delay || 0) + Number(timing.duration || 0))
|
|
),
|
|
completed: false
|
|
});
|
|
this.pendingRevealBlockIds.delete(String(blockId));
|
|
this.revealPublishBlockIds = new Set([String(blockId)]);
|
|
this.drawSpread(this.currentSpread || this.pagination?.getCurrentSpread?.(), ['left', 'right']);
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-reveal-start', {
|
|
detail: {
|
|
blockId
|
|
}
|
|
}));
|
|
this.requestAnimationFrame();
|
|
}
|
|
|
|
createAnimationState(blockId, wordTimings = [], detail = {}) {
|
|
return {
|
|
blockId,
|
|
wordTimings,
|
|
startedAt: null,
|
|
totalDuration: Math.max(
|
|
Number(detail.totalDuration || 0),
|
|
...wordTimings.map(timing => Number(timing.delay || 0) + Number(timing.duration || 0))
|
|
),
|
|
completed: false,
|
|
prepared: true
|
|
};
|
|
}
|
|
|
|
prepareRevealBlock(detail = {}, options = {}) {
|
|
const blockId = detail.blockId ?? detail.id ?? null;
|
|
if (blockId == null || !Array.isArray(detail.wordTimings)) return;
|
|
const id = String(blockId);
|
|
const wordTimings = detail.wordTimings;
|
|
const preloadOnly = Boolean(detail.preloadOnly || options.preloadOnly);
|
|
this.markPipelineTiming('prepareRevealBlock:start', {
|
|
blockId: id,
|
|
wordTimingCount: wordTimings.length,
|
|
preloadOnly
|
|
});
|
|
if (!preloadOnly && this.preparedRevealCache.has(id)) {
|
|
const cached = this.preparedRevealCache.get(id);
|
|
this.activeAnimations.set(id, this.createAnimationState(blockId, wordTimings, detail));
|
|
this.pendingRevealBlockIds.delete(id);
|
|
this.publishPreparedReveal(cached);
|
|
this.markPipelineTiming('prepareRevealBlock:end', {
|
|
blockId: id,
|
|
wordTimingCount: wordTimings.length,
|
|
reusedPreparedCanvas: true
|
|
});
|
|
return;
|
|
}
|
|
|
|
this.activeAnimations.set(id, this.createAnimationState(blockId, wordTimings, detail));
|
|
this.pendingRevealBlockIds.delete(id);
|
|
this.revealPublishBlockIds = new Set([id]);
|
|
const spread = detail.spread || this.currentSpread || this.pagination?.getCurrentSpread?.();
|
|
const sides = ['left', 'right'];
|
|
const published = this.drawSpread(spread, sides, { preloadOnly });
|
|
if (preloadOnly && published) {
|
|
this.preparedRevealCache.set(id, {
|
|
...published,
|
|
blockId,
|
|
wordTimings,
|
|
totalDuration: detail.totalDuration || 0
|
|
});
|
|
}
|
|
this.markPipelineTiming('prepareRevealBlock:end', {
|
|
blockId: id,
|
|
wordTimingCount: wordTimings.length,
|
|
preloadOnly
|
|
});
|
|
}
|
|
|
|
hasPreparedRevealBlock(blockId) {
|
|
const id = String(blockId ?? '');
|
|
return Boolean(id && this.preparedRevealCache.has(id));
|
|
}
|
|
|
|
publishPreparedReveal(prepared) {
|
|
if (!prepared) return;
|
|
this.markPipelineTiming('publishPreparedReveal', {
|
|
blockId: prepared.blockId,
|
|
sides: prepared.sides || [],
|
|
hasReveal: Boolean(prepared.reveal && Object.keys(prepared.reveal).length)
|
|
});
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-canvases', {
|
|
detail: {
|
|
metrics: prepared.metrics,
|
|
hitMaps: prepared.hitMaps || this.hitMaps,
|
|
left: prepared.left || null,
|
|
right: prepared.right || null,
|
|
reveal: prepared.reveal || {},
|
|
pageMeta: prepared.pageMeta || {},
|
|
preparedFromCache: true
|
|
}
|
|
}));
|
|
}
|
|
|
|
startPreparedRevealAnimation(blockId) {
|
|
const id = String(blockId ?? '');
|
|
const animation = this.activeAnimations.get(id);
|
|
if (!animation) return false;
|
|
this.markPipelineTiming('startPreparedRevealAnimation', {
|
|
blockId: id,
|
|
wordTimingCount: Array.isArray(animation.wordTimings) ? animation.wordTimings.length : 0
|
|
});
|
|
animation.startedAt = performance.now();
|
|
animation.prepared = false;
|
|
animation.completed = false;
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-reveal-start', {
|
|
detail: {
|
|
blockId: animation.blockId
|
|
}
|
|
}));
|
|
this.requestAnimationFrame();
|
|
return true;
|
|
}
|
|
|
|
fastForwardAnimations() {
|
|
let changed = false;
|
|
const blockIds = [];
|
|
this.activeAnimations.forEach((animation) => {
|
|
if (!animation.completed) {
|
|
animation.completed = true;
|
|
this.revealedBlockIds.add(String(animation.blockId ?? ''));
|
|
blockIds.push(animation.blockId);
|
|
changed = true;
|
|
}
|
|
});
|
|
if (changed) {
|
|
this.pendingRevealBlockIds.clear();
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-reveal-fast-forward', {
|
|
detail: {
|
|
blockIds
|
|
}
|
|
}));
|
|
}
|
|
}
|
|
|
|
stopAnimations() {
|
|
this.activeAnimations.clear();
|
|
this.pendingRevealBlockIds.clear();
|
|
if (this.animationFrameId) {
|
|
clearTimeout(this.animationFrameId);
|
|
this.animationFrameId = null;
|
|
}
|
|
this.drawSpread(this.currentSpread || this.pagination?.getCurrentSpread?.());
|
|
}
|
|
|
|
getBlockSides(blockId) {
|
|
const id = String(blockId ?? '');
|
|
const spread = this.currentSpread || this.pagination?.getCurrentSpread?.() || { left: [], right: [] };
|
|
return ['left', 'right'].filter((side) => {
|
|
const lines = Array.isArray(spread?.[side]) ? spread[side] : [];
|
|
return lines.some(line => String(line?.blockId ?? '') === id);
|
|
});
|
|
}
|
|
|
|
getAnimatedSides(includeCompleted = false) {
|
|
const spread = this.currentSpread || this.pagination?.getCurrentSpread?.() || { left: [], right: [] };
|
|
const activeBlockIds = new Set();
|
|
this.activeAnimations.forEach((animation, blockId) => {
|
|
if (includeCompleted || !animation.completed) activeBlockIds.add(String(blockId));
|
|
});
|
|
const sides = ['left', 'right'].filter((side) => {
|
|
const lines = Array.isArray(spread?.[side]) ? spread[side] : [];
|
|
return lines.some(line => activeBlockIds.has(String(line?.blockId ?? '')));
|
|
});
|
|
return sides.length ? sides : ['left', 'right'];
|
|
}
|
|
|
|
markPendingReveal(blockId) {
|
|
const id = String(blockId ?? '');
|
|
if (!id || this.activeAnimations.has(id) || this.revealedBlockIds.has(id)) return;
|
|
this.pendingRevealBlockIds.add(id);
|
|
}
|
|
|
|
requestAnimationFrame() {
|
|
if (this.animationFrameId) return;
|
|
this.animationFrameId = window.setTimeout(() => this.tickAnimations(performance.now()), this.targetFrameDurationMs);
|
|
}
|
|
|
|
tickAnimations(now) {
|
|
this.animationFrameId = null;
|
|
if (now - this.lastAnimationFrameAt < this.targetFrameDurationMs) {
|
|
this.requestAnimationFrame();
|
|
return;
|
|
}
|
|
this.lastAnimationFrameAt = now;
|
|
|
|
let hasActive = false;
|
|
const currentNow = performance.now();
|
|
this.activeAnimations.forEach((animation) => {
|
|
if (animation.completed) return;
|
|
if (!Array.isArray(animation.wordTimings) || animation.wordTimings.length === 0) return;
|
|
if (animation.startedAt == null) {
|
|
hasActive = true;
|
|
return;
|
|
}
|
|
const lastTiming = animation.wordTimings.at(-1);
|
|
const total = Number(lastTiming?.delay || 0) + Number(lastTiming?.duration || 0);
|
|
if (currentNow - animation.startedAt >= total + 50) {
|
|
animation.completed = true;
|
|
this.revealedBlockIds.add(String(animation.blockId ?? ''));
|
|
} else {
|
|
hasActive = true;
|
|
}
|
|
});
|
|
if (hasActive) this.requestAnimationFrame();
|
|
}
|
|
|
|
publishSpread(sides = null, options = {}) {
|
|
const sidesToPublish = Array.isArray(sides) && sides.length ? sides : ['left', 'right'];
|
|
const wordCounts = {
|
|
left: this.revealWords?.left?.length || 0,
|
|
right: this.revealWords?.right?.length || 0
|
|
};
|
|
const detail = {
|
|
metrics: this.metrics,
|
|
hitMaps: this.hitMaps,
|
|
sides: sidesToPublish,
|
|
pageMeta: this.buildPublishPageMeta(sidesToPublish)
|
|
};
|
|
if (options.preloadOnly) detail.preloadOnly = true;
|
|
if (sidesToPublish.includes('left')) {
|
|
detail.left = options.preloadOnly ? this.cloneCanvas(this.canvases.left) : this.canvases.left;
|
|
}
|
|
if (sidesToPublish.includes('right')) {
|
|
detail.right = options.preloadOnly ? this.cloneCanvas(this.canvases.right) : this.canvases.right;
|
|
}
|
|
const reveal = {};
|
|
sidesToPublish.forEach((side) => {
|
|
const bounds = this.revealBounds?.[side];
|
|
if (!bounds) return;
|
|
const blockIds = Array.from(bounds.blockIds || []);
|
|
const durationMs = blockIds.reduce((maxDuration, blockId) => {
|
|
const animation = this.activeAnimations.get(String(blockId));
|
|
return Math.max(maxDuration, Number(animation?.totalDuration || 0));
|
|
}, 0);
|
|
if (durationMs <= 0) return;
|
|
reveal[side] = {
|
|
blockIds,
|
|
durationMs,
|
|
baseCanvas: options.preloadOnly ? this.cloneCanvas(this.revealBaseCanvases?.[side]) : this.revealBaseCanvases?.[side] || null,
|
|
wordRects: (this.revealWords?.[side] || []).map(word => ({
|
|
blockId: word.blockId,
|
|
wordIndex: word.wordIndex,
|
|
rect: word.rect,
|
|
timing: word.timing
|
|
})),
|
|
bounds: {
|
|
x: bounds.x / this.metrics.width,
|
|
y: bounds.y / this.metrics.height,
|
|
width: Math.max(0.001, (bounds.right - bounds.x) / this.metrics.width),
|
|
height: Math.max(0.001, (bounds.bottom - bounds.y) / this.metrics.height)
|
|
}
|
|
};
|
|
});
|
|
if (Object.keys(reveal).length) detail.reveal = reveal;
|
|
this.cachePublishedPages(sidesToPublish, detail);
|
|
this.markPipelineTiming('publishSpread', {
|
|
sides: sidesToPublish,
|
|
hasReveal: Object.keys(reveal).length > 0,
|
|
wordCounts,
|
|
preloadOnly: Boolean(options.preloadOnly)
|
|
});
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-canvases', {
|
|
detail
|
|
}));
|
|
return detail;
|
|
}
|
|
|
|
buildPublishPageMeta(sides = []) {
|
|
const baseMeta = this.currentSpread?.pageMeta || {};
|
|
return sides.reduce((meta, side) => {
|
|
const source = baseMeta[side] || null;
|
|
if (!source) {
|
|
meta[side] = null;
|
|
return meta;
|
|
}
|
|
const lines = Array.isArray(this.currentSpread?.[side]) ? this.currentSpread[side] : [];
|
|
const maxBlockId = lines.reduce((max, line) => Math.max(max, Number(line?.blockId || 0)), 0);
|
|
const lineCount = lines.length;
|
|
const pageIndex = Number(source.pageIndex);
|
|
const key = Number.isFinite(pageIndex) ? pageIndex : side;
|
|
const nextVersion = Math.max(1, Number(this.pageContentVersions.get(key) || 0) + 1);
|
|
this.pageContentVersions.set(key, nextVersion);
|
|
meta[side] = {
|
|
...source,
|
|
contentVersion: nextVersion,
|
|
completenessScore: (maxBlockId * 1000) + lineCount,
|
|
maxBlockId,
|
|
lineCount
|
|
};
|
|
return meta;
|
|
}, {
|
|
left: Object.prototype.hasOwnProperty.call(baseMeta, 'left') ? baseMeta.left : null,
|
|
right: Object.prototype.hasOwnProperty.call(baseMeta, 'right') ? baseMeta.right : null
|
|
});
|
|
}
|
|
|
|
cachePublishedPages(sides = [], detail = {}) {
|
|
if (!this.pageCache || typeof this.pageCache.cachePageCanvas !== 'function') return;
|
|
sides.forEach((side) => {
|
|
const canvas = detail[side];
|
|
const pageMeta = detail.pageMeta?.[side] || null;
|
|
if (!canvas || !pageMeta || !Number.isFinite(Number(pageMeta.pageIndex))) return;
|
|
this.schedulePageCacheWrite(pageMeta, canvas);
|
|
});
|
|
}
|
|
|
|
schedulePageCacheWrite(pageMeta, canvas) {
|
|
const frozenCanvas = this.cloneCanvas(canvas);
|
|
const key = this.getPageCacheWriteKey(pageMeta, frozenCanvas);
|
|
const pending = this.pendingPageCacheWrites.get(key);
|
|
if (pending && this.isOlderPageMeta(pageMeta, pending.pageMeta)) return pending.promise;
|
|
const previousWrite = pending?.promise || Promise.resolve();
|
|
const write = previousWrite.catch(() => false).then(() => this.pageCache?.cachePageCanvas?.(pageMeta, frozenCanvas))
|
|
.then((stored) => {
|
|
if (!stored) {
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-cache-problem', {
|
|
detail: {
|
|
type: 'db-write-failed',
|
|
pageIndex: pageMeta?.pageIndex ?? null,
|
|
key
|
|
}
|
|
}));
|
|
}
|
|
return stored;
|
|
})
|
|
.catch((error) => {
|
|
document.dispatchEvent(new CustomEvent('webgl-book:page-cache-problem', {
|
|
detail: {
|
|
type: 'db-write-error',
|
|
pageIndex: pageMeta?.pageIndex ?? null,
|
|
key,
|
|
message: error?.message || String(error)
|
|
}
|
|
}));
|
|
return false;
|
|
})
|
|
.finally(() => {
|
|
if (this.pendingPageCacheWrites.get(key)?.promise === write) {
|
|
this.pendingPageCacheWrites.delete(key);
|
|
}
|
|
});
|
|
this.pendingPageCacheWrites.set(key, {
|
|
promise: write,
|
|
pageMeta: { ...(pageMeta || {}) }
|
|
});
|
|
return write;
|
|
}
|
|
|
|
isOlderPageMeta(incoming = {}, existing = null) {
|
|
if (!existing) return false;
|
|
const incomingCompleteness = Math.max(0, Number(incoming?.completenessScore || 0));
|
|
const existingCompleteness = Math.max(0, Number(existing?.completenessScore || 0));
|
|
if (incomingCompleteness < existingCompleteness) return true;
|
|
if (incomingCompleteness > existingCompleteness) return false;
|
|
const incomingVersion = Math.max(0, Number(incoming?.contentVersion || 0));
|
|
const existingVersion = Math.max(0, Number(existing?.contentVersion || 0));
|
|
return incomingVersion > 0 && existingVersion > incomingVersion;
|
|
}
|
|
|
|
getPageCacheWriteKey(pageMeta = {}, canvas = null) {
|
|
if (this.pageCache && typeof this.pageCache.makePageKey === 'function') {
|
|
return this.pageCache.makePageKey({
|
|
...pageMeta,
|
|
width: canvas?.width ?? pageMeta.width,
|
|
height: canvas?.height ?? pageMeta.height
|
|
});
|
|
}
|
|
return `${pageMeta.cacheKey || window.MODULE_CACHE_BUSTER || 'dev'}:page:${pageMeta.pageIndex}:${canvas?.width || pageMeta.width}x${canvas?.height || pageMeta.height}`;
|
|
}
|
|
|
|
getPageCanvas(side) {
|
|
return this.canvases[side] || null;
|
|
}
|
|
|
|
getHitMap(side) {
|
|
return this.hitMaps[side] || [];
|
|
}
|
|
|
|
handlePageCountChanged(event) {
|
|
this.pageFormat?.setPageCount?.(event.detail?.pageCount);
|
|
this.createPageCanvases();
|
|
this.lastDrawSignature = null;
|
|
this.drawSpread(this.currentSpread || this.pagination?.getCurrentSpread?.());
|
|
}
|
|
|
|
}
|
|
|
|
const bookTextureRenderer = new BookTextureRendererModule();
|
|
|
|
export { bookTextureRenderer as BookTextureRenderer };
|
|
|
|
if (window.moduleRegistry) {
|
|
window.moduleRegistry.register(bookTextureRenderer);
|
|
}
|
|
|
|
window.BookTextureRenderer = bookTextureRenderer;
|