<!DOCTYPE HTML>
<html>
<head>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.9.2/themes/base/jquery-ui.css" />
<style>
body {
margin: 0px;
padding: 0px;
}
#rData{
float:left;
margin-left:100px;
margin-right:auto;
width:470px;
}
#sData{
float: left;
margin-left:100px;
margin-right:auto;
width:470px;
}
h2{
text-align:center;
}
#myCanvas {
border: 2px dashed grey;
}
#btnHolder, #sliderTxt{
text-align:center;
}
</style>
<script src="http://code.jquery.com/jquery-1.8.3.js"></script>
<script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js"></script>
<script src="/socket.io/socket.io.js"></script>
<script>
// canvas request for all browsers
window.requestAnimFrame = (function(callback) {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function(callback) {
window.setTimeout(callback, 1000 / 30); // 30 frames per second
};
})();
var iosocket;
var pollOneH = 0;
var poll1;
var text;
var potValue;
var prevPotValue;
//var onOff = false;
var toggleVal = 0;
function animation(poll1,text)
{
var canvas = document.getElementById("myCanvas");
var content = canvas.getContext("2d");
// clear canvas
content.clearRect(0, 0, 460, 540);
content.fillStyle = 'black';
content.textAlign = 'center';
content.font = '20pt Calibri';
// make the wobbely values stop
if(pollOneH*2 > prevPotValue+2 || pollOneH*2 < prevPotValue-2){
prevPotValue = potValue;
potValue = pollOneH*2;
}
content.fillText('Potmeter value: ' + potValue, text.x, text.y);
// render graph
content.fillStyle = 'orange';
content.fillRect(poll1.x,(poll1.y-poll1.h),poll1.w,poll1.h);
content.fill();
// request new frame
requestAnimFrame(function() {
if(poll1.h < pollOneH){
poll1.h += (pollOneH - poll1.h)*.15;
}
else if(poll1.h > pollOneH){
poll1.h -= (poll1.h - pollOneH)*.15;
}
text.y = (poll1.y - poll1.h) - 5;
animation(poll1,text);
});
}
function initSocketIO()
{
iosocket = io.connect();
iosocket.on('onconnection', function(value) {
pollOneH = value.pollOneValue/2; // recieve start poll value from server
initPoll();
initButton();
initSlider();
// recieve changed values by other client from server
iosocket.on('updateData', function (recievedData) {
pollOneH = recievedData.pollOneValue/2; // recieve start poll value from server
});
});
}
function initPoll()
{
poll1 = {
x: 10,
y: 540,
w: 440,
h: 0
}
text = {
x:poll1.w/2,
y:100
}
potValue = pollOneH*2;
prevPotValue = potValue;
animation(poll1,text);
}
function initButton()
{
$( "#check" ).button();
}
function initSlider()
{
$( "#slider" ).slider({
min:0,
max:255,
change: function(event,ui) {
iosocket.emit('sliderval',ui.value);
}
});
}
window.onload = function() {
initSocketIO();
};
$(document).ready(function() {
$('#check').click(function() {
toggleVal += 1;
toggleVal %= 2;
iosocket.emit('buttonval',toggleVal);
});
});
</script>
</head>
<body>
<div id="rData">
<h2>Data from Arduino</h2>
<canvas id="myCanvas" width="460" height="540"></canvas>
</div>
<div id="sData">
<h2>Data to Arduino</h2>
<div id="btnHolder">
<input type="checkbox" id="check" value="toggle"/><label for="check">Toggle LED</label>
</div>
<p id="sliderTxt">LED Dimmer</p>
<div id="slider"></div>
</div>
</body>
</html>