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display.html
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<html>
<head>
<title>LW Display</title>
<style>
/*
Based upon Jakub Hampl's "Designing a departures board with CSS3".
http://gampleman.eu/post/1488470623/designing-a-departures-board-with-css3
*/
body {
background-color: rgb(30,30,30);
}
.departure-board {
padding: 0.36em;
display: inline-block;
line-height: 1.3em;
background: rgb(30, 30, 30);
-webkit-border-radius: 0.21em;
-moz-border-radius: 0.21em;
border-radius: 0.21em;
color: #eee;
font-family: Helvetica;
}
.departure-board span.letter {
display: inline-block;
width: 1em;
margin: 0 .1em;
height: 1.3em;
text-align: center;
position: relative;
}
.departure-board span.letter {
-webkit-box-shadow:
inset 0 -.07em 0 rgba(50, 50, 50, .7),
inset 0 -.14em 0 rgba(0, 0, 0, .7),
inset .14em 0 .28em rgba(0, 0, 0, .9),
inset -.14em 0 .28em rgba(0, 0, 0, .9),
0 .07em 0 rgba(255, 255, 255, .2);
-moz-box-shadow:
inset 0 -.07em 0 rgba(50, 50, 50, .7),
inset 0 -.14em 0 rgba(0, 0, 0, .7),
inset .14em 0 .28em rgba(0, 0, 0, .9),
inset -.14em 0 .28em rgba(0, 0, 0, .9),
0 .07em 0 rgba(255, 255, 255, .2);
-o-box-shadow:
inset 0 -.07em 0 rgba(50, 50, 50, .7),
inset 0 -.14em 0 rgba(0, 0, 0, .7),
inset .14em 0 .28em rgba(0, 0, 0, .9),
inset -.14em 0 .28em rgba(0, 0, 0, .9),
0 .07em 0 rgba(255, 255, 255, .2);
box-shadow:
inset 0 -.07em 0 rgba(50, 50, 50, .7),
inset 0 -.14em 0 rgba(0, 0, 0, .7),
inset .14em 0 .28em rgba(0, 0, 0, .9),
inset -.14em 0 .28em rgba(0, 0, 0, .9),
0 .07em 0 rgba(255, 255, 255, .2);
}
.departure-board span.letter:before {
border-top: .07em solid rgba(0, 0, 0, .4);
border-bottom: .07em solid rgba(255, 255, 255, .08);
height: 0;
position: relative;
width: 100%;
left: 0;
top: .62em;
content: " ";
display: block;
z-index: 2;
-moz-transform: translate(0, -.05em);
-o-transform: translate(0, -.1em);
}
.departure-board span.fold {
display: block;
position: absolute;
height: 0;
top: .65em;
}
.departure-board span.flap {
display: block;
position: absolute;
top: 0em;
width: 1em;
height: .65em;
margin: 0;
overflow: hidden;
}
.departure-board span.text {
width: 100%;
}
.departure-board span.bottom {
top: .65em;
}
.departure-board span.bottom span.text {
position: relative;
top: -.65em;
}
.departure-board span.flap.falling {
display: none;
bottom: 0;
top: auto;
}
.departure-board span.flap.falling span.text {
-webkit-backface-visibility: hidden;
border-top: .03em solid #444;
border-bottom: .03em solid #444;
background: #000;
display: block;
position: relative;
-webkit-transform: scaleY(1);
-moz-transform: scaleY(1);
-o-transform: scaleY(1);
transform: scaleY(1);
-webkit-transition: -webkit-transform linear;
-moz-transition: -moz-transform linear;
-o-transition: -o-transform linear;
transition: transform linear;
}
</style>
</head>
<body>
<center>
<div id="test"></div>
</center>
<script type="text/javascript">
var DepartureBoard = function (element, options) {
options = options || {};
this._element = element;
this._letters = [];
element.className += ' departure-board';
var rowCount = options.rowCount || 1,
letterCount = options.letterCount || 25,
letter,
rowElement;
for (var r = 0; r < rowCount; r++) {
this._letters.push ([]);
rowElement = document.createElement ('div');
rowElement.className = 'row';
element.appendChild (rowElement);
for (var l = 0; l < letterCount; l++) {
letter = new DepartureBoard.Letter ();
this._letters[r].push (letter);
rowElement.appendChild (letter.getElement ());
}
}
};
DepartureBoard.LETTERS = " ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.,':()&!?+-";
DepartureBoard.prototype.spin = function () {
var me = this;
for (var i = 0, l = this._letters.length; i < l; i++) {
(function (i) {
window.setTimeout (function () {
me._letters[i].spin ();
}, 20 * i + Math.random () * 400);
})(i);
}
};
DepartureBoard.prototype.setValue = function (value) {
if (!(value instanceof Array)) value = [value];
var me = this;
for (var r = 0, rl = this._letters.length; r < rl; r++) {
value[r] = value[r]? value[r].toUpperCase () : '';
for (var i = 0, l = this._letters[r].length; i < l; i++) {
(function (r, i) {
window.setTimeout (function () {
var letterValue = value[r].substr (i, 1) || '';
me._letters[r][i].setValue (letterValue);
}, 2000 * r + 25 * i + Math.random () * 400);
})(r, i);
}
}
};
DepartureBoard.Letter = function () {
this._element = document.createElement ('span');
this._element.className = 'letter';
this._bottom = document.createElement ('span');
this._bottom.className = 'flap bottom';
this._element.appendChild (this._bottom);
this._bottomText = document.createElement ('span');
this._bottomText.className = 'text';
this._bottom.appendChild (this._bottomText);
this._top = document.createElement ('span');
this._top.className = 'flap top';
this._element.appendChild (this._top);
this._topText = document.createElement ('span');
this._topText.className = 'text';
this._top.appendChild (this._topText);
this._fold = document.createElement ('span');
this._fold.className = 'fold';
this._element.appendChild (this._fold);
this._falling = document.createElement ('span');
this._falling.className = 'flap falling';
this._fold.appendChild (this._falling);
this._fallingText = document.createElement ('span');
this._fallingText.className = 'text';
this._fallingText.style.WebkitTransitionDuration = this._fallingText.style.MozTransitionDuration =
this._fallingText.style.OTransitionDuration = this._fallingText.style.transitionDuration = DepartureBoard.Letter.DROP_TIME * 0.5 + 'ms';
this._falling.appendChild (this._fallingText);
this._index = 0;
this._interval = null;
this._stopAt = null;
};
DepartureBoard.Letter.DROP_TIME = 100;
DepartureBoard.Letter.prototype.getElement = function () {
return this._element;
};
DepartureBoard.Letter.prototype.spin = function (clear) {
if (clear !== false) this._stopAt = null;
var me = this;
this._interval = window.setInterval (function () { me._tick (); }, DepartureBoard.Letter.DROP_TIME * 1.1);
};
DepartureBoard.Letter.prototype.setValue = function (value) {
this._stopAt = DepartureBoard.LETTERS.indexOf (value);
if (this._stopAt < 0) this._stopAt = 0;
if (!this._interval && this._index != this._stopAt) this.spin (false);
};
DepartureBoard.Letter.prototype._tick = function () {
var me = this,
oldValue = DepartureBoard.LETTERS.charAt (this._index),
fallingStyle = this._falling.style,
fallingTextStyle = this._fallingText.style,
newValue;
this._index = (this._index + 1) % DepartureBoard.LETTERS.length;
newValue = DepartureBoard.LETTERS.charAt (this._index);
this._fallingText.innerHTML = oldValue;
fallingStyle.display = 'block';
this._topText.innerHTML = newValue;
window.setTimeout (function () {
fallingTextStyle.WebkitTransitionTimingFunction = fallingTextStyle.MozTransitionTimingFunction = fallingTextStyle.OTransitionTimingFunction = fallingTextStyle.transitionTimingFunction = 'ease-in';
fallingTextStyle.WebkitTransform = fallingTextStyle.MozTransform = fallingTextStyle.OTransform = fallingTextStyle.transform = 'scaleY(0)';
}, 1);
window.setTimeout (function () {
me._fallingText.innerHTML = newValue;
fallingStyle.top = '-.03em';
fallingStyle.bottom = 'auto';
fallingTextStyle.top = '-.65em';
fallingTextStyle.WebkitTransitionTimingFunction = fallingTextStyle.MozTransitionTimingFunction = fallingTextStyle.OTransitionTimingFunction = fallingTextStyle.transitionTimingFunction = 'ease-out';
fallingTextStyle.WebkitTransform = fallingTextStyle.MozTransform = fallingTextStyle.OTransform = fallingTextStyle.transform = 'scaleY(1)';
}, DepartureBoard.Letter.DROP_TIME / 2);
window.setTimeout (function () {
me._bottomText.innerHTML = newValue;
fallingStyle.display = 'none';
fallingStyle.top = 'auto';
fallingStyle.bottom = 0;
fallingTextStyle.top = 0;
}, DepartureBoard.Letter.DROP_TIME);
if (this._index === this._stopAt) {
clearInterval (this._interval);
delete this._interval;
}
};
</script>
<script>
var board = new DepartureBoard (document.getElementById ('test'), { rowCount: 11, letterCount: 25 });
var last_response_text = ""
get_data = function() {
var xhttp = new XMLHttpRequest();
xhttp.open("GET", "/update/");
xhttp.onload = function() {
response = JSON.parse(this.responseText);
if (response.new_text != last_response_text) {
board.setValue(response.new_text.split("\n"));
last_response_text = response.new_text
}
}
xhttp.send();
window.setTimeout(get_data, 1000);
}
get_data();
</script>
</body>
</html>