114 lines
2.8 KiB
JavaScript
Executable File
114 lines
2.8 KiB
JavaScript
Executable File
(function() {
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var url = window.location,
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body = document.body,
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slides = document.querySelectorAll('div.slide'),
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progress = document.querySelector('div.progress div'),
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slideList = [];
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for(var i = 0, slidesLength = slides.length; i < slidesLength; i++) {
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slides[i].addEventListener('click', enterFull, false);
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slideList[i] = slides[i].id;
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}
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function resizeFull(p) {
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if(typeof p == 'boolean' && !p) {
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var transform = 'none';
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} else {
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var sx = body.clientWidth / window.innerWidth,
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sy = body.clientHeight / window.innerHeight,
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transform = 'scale(' + (1/Math.max(sx, sy)) + ')';
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}
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body.style.MozTransform = transform;
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body.style.WebkitTransform = transform;
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body.style.OTransform = transform;
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body.style.msTransform = transform;
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body.style.transform = transform;
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}
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function turnSlide(e) {
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var current = slideList.indexOf(url.hash.substr(1)), target;
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if(e) {
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if(e.type == 'keydown') {
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var prevent = true;
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switch(e.which) {
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case 33 : // PgUp
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case 38 : // Up
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case 37 : // Left
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case 75 : // k
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current--;
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break;
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case 34 : // PgDown
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case 40 : // Down
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case 39 : // Right
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case 74 : // j
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current++;
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break;
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case 36 : // Home
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current = 0;
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break;
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case 35 : // End
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current = slideList.length-1;
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break;
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case 32 : // Space
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current += e.shiftKey ? -1 : 1;
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break;
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case 13 : // Enter
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if(!current+1) enterFull();
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break;
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default:
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prevent = false;
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}
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if(prevent) e.preventDefault();
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}
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if(e.type == 'click') {
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current = slideList.indexOf(e.target.parentNode.parentNode.id);
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}
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} else {
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current = (current+1) ? current : 0;
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}
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target = slideList[current];
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if(target) url.hash = target;
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updateProgress();
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}
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function enterFull(e) {
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body.className = 'full';
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resizeFull(true);
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turnSlide(e);
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updateProgress();
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if(!isFull()) history.pushState(null, null, url.pathname + '?full' + url.hash);
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window.addEventListener('resize', resizeFull, false);
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document.addEventListener('keydown', exitFullEsc, false);
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}
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function exitFull() {
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body.className = 'list';
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resizeFull(false);
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var hash = url.hash;
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history.pushState(null, null, url.pathname.replace('?full', ''));
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url.hash = hash;
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window.removeEventListener('resize', resizeFull, false);
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document.removeEventListener('keydown', exitFullEsc, false);
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}
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function exitFullEsc(e) {
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if(e.which != 27) return;
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exitFull();
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}
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function isFull() {
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return url.search.substr(1) == 'full';
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}
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function updateProgress() {
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if(!progress) return;
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progress.style.width = (100/(slideList.length-1) * slideList.indexOf(url.hash.substr(1))).toFixed(2) + '%';
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}
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window.addEventListener('DOMContentLoaded', function() {
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if(isFull()) enterFull();
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}, false);
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document.addEventListener('keydown', turnSlide, false);
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})(); |