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onstage.html
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onstage.html
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<!DOCTYPE html>
<meta charset="utf8">
<title>DZSlides</title>
<div id="present">
<iframe></iframe>
</div>
<div id="future">
<iframe></iframe>
</div>
<div id="slideidx" onclick="Dz.setCursor(prompt('Go to slide...','1'));">?</div>
<div id="nextslideidx">?</div>
<div id="notes">
<p id="content"></p>
</div>
<div id="slidecount">?</div>
<button id="popup-button" onclick="Dz.popup()">Pop-up</button>
<div id="time">
<span id="hours">00</span>:<span id="minutes">00</span>:<span id="seconds">00</span>
</div>
<style>
html, body {
height: 100%;
color: white;
}
body {
font-family: sans-serif;
overflow: hidden;
}
#present, #future {
bottom: 234px;
position: absolute;
top: 0;
z-index: 5;
}
#present {
left: 0;
right: 50%;
border-right: 4px solid #555;
}
#future {
left: 50%;
right: 0;
border-left: 4px solid #555;
}
#notes {
background: #EEE;
border-top: 8px solid #555;
bottom: 0;
color: #444;
font-size: 30px;
height: 226px;
left: 0;
padding: 0 250px 0 20px;
position: absolute;
right: 0;
overflow: auto;
}
#time {
background: #888;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
bottom: 0;
font-size: 40px;
font-weight: bold;
height: 52px;
line-height: 52px;
right: 30px;
position: absolute;
text-align: center;
width: 200px;
}
iframe {
border: none;
height: 100%;
pointer-events: none;
width: 100%;
}
#slideidx,
#nextslideidx,
#slidecount {
background: #888;
font-size: 40px;
font-weight: bold;
height: 52px;
line-height: 52px;
margin: 0;
position: absolute;
text-align: center;
z-index: 10;
}
#slideidx,
#nextslideidx {
border-bottom: 4px solid #555;
bottom: 230px;
padding: 0 10px;
}
#slideidx {
border-right: 4px solid #555;
border-top-left-radius: 10px;
cursor: pointer;
right: 50%;
}
#nextslideidx {
border-left: 4px solid #555;
border-top-right-radius: 10px;
left: 50%;
}
#slidecount {
border-bottom-left-radius: 10px;
border-bottom-right-radius: 10px;
border-top: 4px solid #555;
bottom: 174px;
width: 200px;
right: 30px;
}
#popup-button {
bottom: 88px;
background: #888;
border: none;
border-radius: 10px;
color: #FFF;
cursor: pointer;
height: 52px;
font-size: 30px;
font-weight: bold;
position: absolute;
right: 30px;
width: 200px;
z-index: 10;
}
</style>
<script>
var Dz = {
views: {},
notes: null,
url: null,
idx: 1
};
Dz.init = function() {
this.startClock();
this.loadIframes();
}
Dz.onkeydown = function(aEvent) {
// Don't intercept keyboard shortcuts
if (aEvent.altKey
|| aEvent.ctrlKey
|| aEvent.metaKey
|| aEvent.shiftKey) {
return;
}
if ( aEvent.keyCode == 37 // left arrow
|| aEvent.keyCode == 38 // up arrow
|| aEvent.keyCode == 33 // page up
) {
aEvent.preventDefault();
this.back();
}
if ( aEvent.keyCode == 39 // right arrow
|| aEvent.keyCode == 40 // down arrow
|| aEvent.keyCode == 34 // page down
) {
aEvent.preventDefault();
this.forward();
}
if (aEvent.keyCode == 35) { // end
aEvent.preventDefault();
this.goEnd();
}
if (aEvent.keyCode == 36) { // home
aEvent.preventDefault();
this.goStart();
}
if (aEvent.keyCode == 32) { // space
aEvent.preventDefault();
this.toggleContent();
}
}
Dz.onmessage = function(aEvent) {
var argv = aEvent.data.split(" "), argc = argv.length;
argv.forEach(function(e, i, a) { a[i] = decodeURIComponent(e) });
if (argv[0] === "CURSOR" && argc === 2) {
if (aEvent.source === this.views.present) {
var cursor = argv[1].split(".");
this.postMsg(this.views.present, "GET_NOTES");
this.idx = ~~cursor[0];
this.step = ~~cursor[1];
$("#slideidx").innerHTML = argv[1];
this.postMsg(this.views.future, "SET_CURSOR", this.idx + "." + (this.step + 1));
if (this.views.remote)
this.postMsg(this.views.remote, "SET_CURSOR", argv[1]);
} else {
$("#nextslideidx").innerHTML = +argv[1] < 0 ? "END" : argv[1];
}
}
if (aEvent.source === this.views.present) {
if (argv[0] === "NOTES" && argc === 2)
$("#notes > #content").innerHTML = this.notes = argv[1];
if (argv[0] === "REGISTERED" && argc === 3)
$("#slidecount").innerHTML = argv[2];
}
}
/* Get url from hash or prompt and store it */
Dz.getUrl = function() {
var u = window.location.hash.split("#")[1];
if (!u) {
u = window.prompt("What is the URL of the slides?");
if (u) {
window.location.hash = u.split("#")[0];
return u;
}
u = "<style>body{background-color:white;color:black}</style>";
u += "<strong>ERROR:</strong> No URL specified.<br>";
u += "Try<em>: " + document.location + "#yourslides.html</em>";
u = "data:text/html," + encodeURIComponent(u);
}
return u;
}
Dz.loadIframes = function() {
var present = $("#present iframe");
var future = $("#future iframe");
this.url = this.getUrl();
present.src = future.src = this.url + '?autoplay=0';
present.onload = future.onload = function() {
var id = this.parentNode.id;
Dz.views[id] = this.contentWindow;
if (Dz.views.present && Dz.views.future) {
Dz.postMsg(Dz.views.present, "REGISTER");
Dz.postMsg(Dz.views.future, "REGISTER");
}
}
}
Dz.toggleContent = function() {
if (this.views.remote)
this.postMsg(this.views.remote, "TOGGLE_CONTENT");
}
Dz.onhashchange = function() {
this.loadIframe();
}
Dz.back = function() {
this.postMsg(this.views.present, "BACK");
}
Dz.forward = function() {
this.postMsg(this.views.present, "FORWARD");
}
Dz.goStart = function() {
this.postMsg(this.views.present, "START");
}
Dz.goEnd = function() {
this.postMsg(this.views.present, "END");
}
Dz.setCursor = function(aCursor) {
this.postMsg(this.views.present, "SET_CURSOR", aCursor);
}
Dz.popup = function() {
this.views.remote = window.open(this.url + "#" + this.idx, 'slides', 'width=800,height=600,personalbar=0,toolbar=0,scrollbars=1,resizable=1');
}
Dz.postMsg = function(aWin, aMsg) { // [arg0, [arg1...]]
aMsg = [aMsg];
for (var i = 2; i < arguments.length; i++)
aMsg.push(encodeURIComponent(arguments[i]));
aWin.postMessage(aMsg.join(" "), "*");
}
Dz.startClock = function() {
var addZero = function(num) {
return num < 10 ? '0' + num : num;
}
setInterval(function() {
var now = new Date();
$("#hours").innerHTML = addZero(now.getHours());
$("#minutes").innerHTML = addZero(now.getMinutes());
$("#seconds").innerHTML = addZero(now.getSeconds());
}, 1000);
}
function init() {
Dz.init();
window.onkeydown = Dz.onkeydown.bind(Dz);
window.onhashchange = Dz.loadIframes.bind(Dz);
window.onmessage = Dz.onmessage.bind(Dz);
}
window.onload = init;
</script>
<script> // Helpers
if (!Function.prototype.bind) {
Function.prototype.bind = function (oThis) {
// closest thing possible to the ECMAScript 5 internal IsCallable
// function
if (typeof this !== "function")
throw new TypeError(
"Function.prototype.bind - what is trying to be fBound is not callable"
);
var aArgs = Array.prototype.slice.call(arguments, 1),
fToBind = this,
fNOP = function () {},
fBound = function () {
return fToBind.apply( this instanceof fNOP ? this : oThis || window,
aArgs.concat(Array.prototype.slice.call(arguments)));
};
fNOP.prototype = this.prototype;
fBound.prototype = new fNOP();
return fBound;
};
}
var $ = (HTMLElement.prototype.$ = function(aQuery) {
return this.querySelector(aQuery);
}).bind(document);
var $$ = (HTMLElement.prototype.$$ = function(aQuery) {
return this.querySelectorAll(aQuery);
}).bind(document);
</script>