/* html-ppt :: runtime.js
* Keyboard-driven deck runtime. Zero dependencies.
*
* Features:
* ← → / space / PgUp PgDn / Home End navigation
* F fullscreen
* S speaker notes overlay
* O slide overview grid
* T cycle themes (reads data-themes on or )
* A cycle demo animation on current slide
* URL hash #/N deep-link to slide N (1-based)
* Progress bar auto-managed
*/
(function () {
'use strict';
const ANIMS = ['fade-up','fade-down','fade-left','fade-right','rise-in','drop-in',
'zoom-pop','blur-in','glitch-in','typewriter','neon-glow','shimmer-sweep',
'gradient-flow','stagger-list','counter-up','path-draw','parallax-tilt',
'card-flip-3d','cube-rotate-3d','page-turn-3d','perspective-zoom',
'marquee-scroll','kenburns','confetti-burst','spotlight','morph-shape','ripple-reveal'];
function ready(fn){ if(document.readyState!='loading')fn(); else document.addEventListener('DOMContentLoaded',fn);}
ready(function () {
const deck = document.querySelector('.deck');
if (!deck) return;
const slides = Array.from(deck.querySelectorAll('.slide'));
if (!slides.length) return;
let idx = 0;
const total = slides.length;
// progress bar
let bar = document.querySelector('.progress-bar');
if (!bar) {
bar = document.createElement('div');
bar.className = 'progress-bar';
bar.innerHTML = '';
document.body.appendChild(bar);
}
const barFill = bar.querySelector('span');
// notes overlay
let notes = document.querySelector('.notes-overlay');
if (!notes) {
notes = document.createElement('div');
notes.className = 'notes-overlay';
document.body.appendChild(notes);
}
// overview
let overview = document.querySelector('.overview');
if (!overview) {
overview = document.createElement('div');
overview.className = 'overview';
slides.forEach((s, i) => {
const t = document.createElement('div');
t.className = 'thumb';
const title = s.getAttribute('data-title') ||
(s.querySelector('h1,h2,h3')||{}).textContent || ('Slide '+(i+1));
t.innerHTML = ''+(i+1)+'
'+title.trim().slice(0,80)+'
';
t.addEventListener('click', () => { go(i); toggleOverview(false); });
overview.appendChild(t);
});
document.body.appendChild(overview);
}
function go(n){
n = Math.max(0, Math.min(total-1, n));
slides.forEach((s,i) => {
s.classList.toggle('is-active', i===n);
s.classList.toggle('is-prev', i {
const a = el.getAttribute('data-anim');
el.classList.remove('anim-'+a);
void el.offsetWidth;
el.classList.add('anim-'+a);
});
// counter-up
slides[n].querySelectorAll('.counter').forEach(el => {
const target = parseFloat(el.getAttribute('data-to')||el.textContent);
const dur = parseInt(el.getAttribute('data-dur')||'1200',10);
const start = performance.now();
const from = 0;
function tick(now){
const t = Math.min(1,(now-start)/dur);
const v = from + (target-from)*(1-Math.pow(1-t,3));
el.textContent = (target % 1 === 0) ? Math.round(v) : v.toFixed(1);
if (t<1) requestAnimationFrame(tick);
}
requestAnimationFrame(tick);
});
}
function toggleNotes(force){ notes.classList.toggle('open', force!==undefined?force:!notes.classList.contains('open')); }
function toggleOverview(force){ overview.classList.toggle('open', force!==undefined?force:!overview.classList.contains('open')); }
function fullscreen(){ const el=document.documentElement;
if (!document.fullscreenElement) el.requestFullscreen&&el.requestFullscreen();
else document.exitFullscreen&&document.exitFullscreen();
}
// theme cycling
const root = document.documentElement;
const themesAttr = root.getAttribute('data-themes') || document.body.getAttribute('data-themes');
const themes = themesAttr ? themesAttr.split(',').map(s=>s.trim()).filter(Boolean) : [];
let themeIdx = 0;
function cycleTheme(){
if (!themes.length) return;
themeIdx = (themeIdx+1) % themes.length;
const name = themes[themeIdx];
let link = document.getElementById('theme-link');
if (!link) {
link = document.createElement('link');
link.rel = 'stylesheet';
link.id = 'theme-link';
document.head.appendChild(link);
}
// resolve relative to runtime's location
const themePath = (root.getAttribute('data-theme-base') || 'assets/themes/') + name + '.css';
link.href = themePath;
root.setAttribute('data-theme', name);
const ind = document.querySelector('.theme-indicator');
if (ind) ind.textContent = name;
}
// animation cycling on current slide
let animIdx = 0;
function cycleAnim(){
animIdx = (animIdx+1) % ANIMS.length;
const a = ANIMS[animIdx];
const target = slides[idx].querySelector('[data-anim-target]') || slides[idx];
ANIMS.forEach(x => target.classList.remove('anim-'+x));
void target.offsetWidth;
target.classList.add('anim-'+a);
target.setAttribute('data-anim', a);
const ind = document.querySelector('.anim-indicator');
if (ind) ind.textContent = a;
}
document.addEventListener('keydown', function (e) {
if (e.metaKey||e.ctrlKey||e.altKey) return;
switch (e.key) {
case 'ArrowRight': case ' ': case 'PageDown': case 'Enter': go(idx+1); e.preventDefault(); break;
case 'ArrowLeft': case 'PageUp': case 'Backspace': go(idx-1); e.preventDefault(); break;
case 'Home': go(0); break;
case 'End': go(total-1); break;
case 'f': case 'F': fullscreen(); break;
case 's': case 'S': toggleNotes(); break;
case 'o': case 'O': toggleOverview(); break;
case 't': case 'T': cycleTheme(); break;
case 'a': case 'A': cycleAnim(); break;
case 'Escape': toggleOverview(false); toggleNotes(false); break;
}
});
// hash deep-link
function fromHash(){
const m = /^#\/(\d+)/.exec(location.hash||'');
if (m) go(Math.max(0, parseInt(m[1],10)-1));
}
window.addEventListener('hashchange', fromHash);
fromHash();
go(idx);
});
})();