| 1 | /* html-ppt :: fx-runtime.js |
| 2 | * Canvas FX autoloader + lifecycle manager. |
| 3 | * - Dynamically loads all fx modules listed in FX_LIST |
| 4 | * - Initializes [data-fx] elements when their slide becomes active |
| 5 | * - Calls handle.stop() when the slide leaves |
| 6 | */ |
| 7 | (function(){ |
| 8 | 'use strict'; |
| 9 | |
| 10 | const FX_LIST = [ |
| 11 | '_util', |
| 12 | 'particle-burst','confetti-cannon','firework','starfield','matrix-rain', |
| 13 | 'knowledge-graph','neural-net','constellation','orbit-ring','galaxy-swirl', |
| 14 | 'word-cascade','letter-explode','chain-react','magnetic-field','data-stream', |
| 15 | 'gradient-blob','sparkle-trail','shockwave','typewriter-multi','counter-explosion' |
| 16 | ]; |
| 17 | |
| 18 | // Resolve base path of this script so it works from any page location. |
| 19 | const myScript = document.currentScript || (function(){ |
| 20 | const all = document.getElementsByTagName('script'); |
| 21 | for (const s of all){ if (s.src && s.src.indexOf('fx-runtime.js')>-1) return s; } |
| 22 | return null; |
| 23 | })(); |
| 24 | const base = myScript ? myScript.src.replace(/fx-runtime\.js.*$/, 'fx/') : 'assets/animations/fx/'; |
| 25 | |
| 26 | let loaded = 0; |
| 27 | const total = FX_LIST.length; |
| 28 | const ready = new Promise((resolve) => { |
| 29 | if (!total) return resolve(); |
| 30 | FX_LIST.forEach((name) => { |
| 31 | const s = document.createElement('script'); |
| 32 | s.src = base + name + '.js'; |
| 33 | s.async = false; |
| 34 | s.onload = s.onerror = () => { if (++loaded >= total) resolve(); }; |
| 35 | document.head.appendChild(s); |
| 36 | }); |
| 37 | }); |
| 38 | |
| 39 | window.__hpxActive = window.__hpxActive || new Map(); |
| 40 | |
| 41 | /* querySelectorAll never matches root itself, but decks put data-fx on the |
| 42 | * <section class="slide"> too (e.g. a cover starfield) — include it. */ |
| 43 | function fxEls(root){ |
| 44 | const els = Array.from(root.querySelectorAll('[data-fx]')); |
| 45 | if (root.matches && root.matches('[data-fx]')) els.unshift(root); |
| 46 | return els; |
| 47 | } |
| 48 | |
| 49 | function initFxIn(root){ |
| 50 | if (!window.HPX) return; |
| 51 | const els = fxEls(root); |
| 52 | els.forEach((el) => { |
| 53 | if (window.__hpxActive.has(el)) return; |
| 54 | const name = el.getAttribute('data-fx'); |
| 55 | const fn = window.HPX[name]; |
| 56 | if (typeof fn !== 'function') return; |
| 57 | try { |
| 58 | const handle = fn(el, {}) || { stop(){} }; |
| 59 | window.__hpxActive.set(el, handle); |
| 60 | } catch(e){ console.warn('[hpx-fx]', name, e); } |
| 61 | }); |
| 62 | } |
| 63 | |
| 64 | function stopFxIn(root){ |
| 65 | const els = fxEls(root); |
| 66 | els.forEach((el) => { |
| 67 | const h = window.__hpxActive.get(el); |
| 68 | if (h && typeof h.stop === 'function'){ |
| 69 | try{ h.stop(); }catch(e){} |
| 70 | } |
| 71 | window.__hpxActive.delete(el); |
| 72 | }); |
| 73 | } |
| 74 | |
| 75 | function reinitFxIn(root){ |
| 76 | stopFxIn(root); |
| 77 | initFxIn(root); |
| 78 | } |
| 79 | window.__hpxReinit = reinitFxIn; |
| 80 | |
| 81 | function boot(){ |
| 82 | ready.then(() => { |
| 83 | const active = document.querySelector('.slide.is-active') || document.querySelector('.slide'); |
| 84 | if (active) initFxIn(active); |
| 85 | |
| 86 | // Watch all slides for class changes |
| 87 | const slides = document.querySelectorAll('.slide'); |
| 88 | slides.forEach((sl) => { |
| 89 | const mo = new MutationObserver((muts) => { |
| 90 | for (const m of muts){ |
| 91 | if (m.attributeName === 'class'){ |
| 92 | if (sl.classList.contains('is-active')) initFxIn(sl); |
| 93 | else stopFxIn(sl); |
| 94 | } |
| 95 | } |
| 96 | }); |
| 97 | mo.observe(sl, { attributes: true, attributeFilter: ['class'] }); |
| 98 | }); |
| 99 | }); |
| 100 | } |
| 101 | |
| 102 | if (document.readyState === 'loading'){ |
| 103 | document.addEventListener('DOMContentLoaded', boot); |
| 104 | } else { |
| 105 | boot(); |
| 106 | } |
| 107 | })(); |
| 108 |