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window.addEventListener('load', function(evt) {
let main = document.querySelector('main');
let nav = document.querySelector('nav');
let wrapper = document.querySelector('div.wrapper');
let hash = window.location.hash.slice(1, window.location.hash.length);
if (hash.length == 0) {
main.innerHTML = '<h1>No presentation selected!</h1>';
} else {
fetch(`presentations/${hash}/default.pug`).then(function(response) {
response.text().then(function(template) {
if (response.status == 200) {
main.innerHTML = jade.render(template, {});
initSlideshow();
} else {
main.innerHTML = '<section><h3>Presentation does not exists!</h3></section>';
}
}).catch(function(error) {
console.log(error);
});
});
fetch(`presentations/${hash}/meta.json`).then(function(response) {
response.json().then(function(data) {
document.title = data.title;
}).catch(function(error) {
console.log(error);
});
});
}
function initSlideshow() {
// mathjax formulas
MathJax.Hub.Config({
//displayAlign: 'left',
extensions: ['tex2jax.js'],
jax: ['input/TeX', 'output/SVG'],
tex2jax: {
skipTags: ['script', 'noscript', 'style', 'textarea', 'code'],
inlineMath: [
['$', '$'],
["\\(", "\\)"]
],
displayMath: [
['$$', '$$'],
["\\[", "\\]"]
],
}
});
MathJax.Hub.Configured();
// syntax highlighting
Prism.highlightAll();
// initializes slides
function showSlide(slides, op) {
let tmpIdx = currentIdx + op;
if (tmpIdx >= 0 && tmpIdx < slides.length) {
slides.forEach(function(slide) {
slide.classList.add('hide');
});
slides[tmpIdx].classList.remove('hide');
nav.innerHTML = `${tmpIdx+1} / ${slides.length}`;
currentIdx = tmpIdx;
}
}
// fixes images relative path
document.querySelectorAll('img').forEach(function(image) {
image.src = `presentations/${hash}/${image.getAttribute('src')}`;
});
let slides = document.querySelectorAll('section');
let currentIdx = 0;
showSlide(slides, currentIdx);
document.addEventListener('keydown', function(evt) {
switch (evt.code) {
case 'ArrowRight':
{
showSlide(slides, 1);
break;
}
case 'ArrowLeft':
{
showSlide(slides, -1);
break;
}
case 'KeyF':
{
if (wrapper.requestFullscreen) {
wrapper.requestFullscreen();
} else if (wrapper.mozRequestFullScreen) {
wrapper.mozRequestFullScreen();
} else if (wrapper.webkitRequestFullscreen) {
wrapper.webkitRequestFullscreen();
} else if (wrapper.msRequestFullscreen) {
wrapper.msRequestFullscreen();
}
break;
}
}
}, false);
//var elem = document.getElementById("myvideo");
//if (elem.requestFullscreen) {
// elem.requestFullscreen();
//}
}
}, false);
// hide mouse after 5seconds
(function() {
var mouseTimer = null,
cursorVisible = true;
function disappearCursor() {
mouseTimer = null;
document.body.style.cursor = 'none';
cursorVisible = false;
}
document.onmousemove = function() {
if (mouseTimer) {
window.clearTimeout(mouseTimer);
}
if (!cursorVisible) {
document.body.style.cursor = 'default';
cursorVisible = true;
}
mouseTimer = window.setTimeout(disappearCursor, 2000);
};
})();
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