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var webcam_videos = [];
var chat_users = [];
var webcam_width = 130;
var webcam_height = 90;
var peerConnection;
var websocketChat = {
send: function (message) {
rtc._socket.send(message);
},
recv: function (message) {
return message;
},
event: 'receive_chat_msg'
};
var dataChannelChat = {
broadcast: function(message) {
for(var connection in rtc.dataChannels) {
var channel = rtc.dataChannels[connection];
if (rtc.connection_ok_to_send[connection]) {
channel.send(message);
} else {
console.log("unable to send message to " + connection);
}
}
},
send: function(connection, message) {
var channel = rtc.dataChannels[connection];
if (rtc.connection_ok_to_send[connection]) {
channel.send(message);
} else {
console.log("unable to send message to " + connection);
}
},
recv: function(channel, message) {
return JSON.parse(message).data;
},
event: 'data stream data'
};
var ppChat = {
init:function(){
$('#chat-wrapper').window('open');
},
addmsg_to_board : function(username, msg, color) {
var messages = $('#msgboard');
msg = ppChat.sanitize(msg);
if(color) {
msg = '<span style="color: ' + color + '; padding-left: 15px;">' + username + ' : </span>' + '<span style="color: ' + color + '; padding-left: 10px">' + msg + '</span>';
} else {
msg = '<span style="color: ' + color + '; padding-left: 15px;">' + username + ' : </span>' + '<span><strong style="padding-left: 10px">' + msg + '</strong></span>';
}
messages.html(messages.html() + msg + '<br />');
messages.scrollTop(10000);
},
dispsystemmessage : function(msg) {
var messages = $('#msgboard');
msg = ppChat.sanitize(msg);
msg = '<strong class="small" style="padding-left: 15px">' + msg + '</strong>';
messages.html(messages.html() + msg + '<br />');
messages.scrollTop(10000);
},
sanitize : function(msg) {
/* this isn't actual security, just avoids accidential html input */
return msg.replace(/</g, '<');
},
sendmessage : function(chat, color) {
var room = window.location.hash.slice(1);
var username = $("#username").val();
chat.broadcast(JSON.stringify({
"eventName": "chat_msg",
"data": {
"messages": $("#sendtext").val(),
"room": room,
"color": color
}
}));
ppChat.addmsg_to_board(username, $("#sendtext").val());
$("#sendtext").val("");
},
initChat : function() {
var chat;
if (rtc.dataChannelSupport) {
console.log('initializing data channel chat');
chat = dataChannelChat;
} else {
console.log('initializing websocket chat');
chat = websocketChat;
}
var color = "#" + ((1 << 24) * Math.random() | 0).toString(16);
$('#btnSend').bind('click', function(event){
ppChat.sendmessage(chat, color);
});
$('#sendtext').bind('keypress', function(event){
var key = event.which || event.keyCode;
if((key === 13 || key === 10) && event.ctrlKey) {
ppChat.sendmessage(chat, color);
event.preventDefault();
}
});
$('#shutter').bind('click', function(event) {
var canvas = document.querySelector('#canvas');
var photo = document.querySelector('#photo');
var video = document.querySelector('#you');
canvas.width = webcam_width;
canvas.height = webcam_height;
canvas.getContext('2d').drawImage(video, 0, 0, webcam_width, webcam_height);
var data = canvas.toDataURL('image/png');
$.ajax({
type : 'POST',
url : '/upload',
data : { shutter_image : data, username : $('#username').val() },
success : function(data){
alert('uploaded successfully!');
console.log('uploaded successfully!');
}});
});
/* this function is called with every data packet recieved */
rtc.on(chat.event, function(conn, data, id, username) {
/* decode and append to data */
data = chat.recv.apply(this, arguments);
data.id = id;
data.username = username;
/* pass data along */
if (data.messages) {
/* chat */
ppChat.addmsg_to_board(data.username, data.messages, data.color.toString(16));
} else {
/* data */
process_data(data);
}
});
},
WebRTC: {
init: function() {
if (window.chrome)
{
peerConnection = window.PeerConnection || window.webkitPeerConnection00 || window.webkitRTCPeerConnection;
}else{
peerConnection = mozRTCPeerConnection;
}
if(peerConnection){
rtc.createStream({"video": true, "audio": false}, function(stream) {
$('#you').attr('src', URL.createObjectURL(stream));
webcam_videos.push($('#you'));
rtc.attachStream(stream, 'you');
ppChat.WebRTC.displaywebcamVideos();
});
}else {
ppChat.Errors.displayErrors('Your browser is not supported or you have to turn on flags. In chrome you go to chrome://flags and turn on Enable PeerConnection remember to restart chrome');
}
var room = window.location.hash.slice(1);
if (room != 0) {
rtc.connect("ws:" + window.location.href.substring(window.location.protocol.length).split('#')[0], room, $("#username").val());
rtc.on('ready', function(my_socket, usernames) {
//to expand for ready event of WebRTC
});
/* when a new user's data channel is opened and we are offering a file, tell them */
rtc.on('data stream open', function(id, username) {
ppChat.dispsystemmessage('now connected to ' + username);
ppChat.WebRTC.cloneUser('useryou', id, username);
});
rtc.on('add remote stream', function(stream, socketId) {
console.log("adding remote stream...");
var clone = ppChat.WebRTC.cloneVideo('you', socketId);
$('#' + clone.attr('id')).attr("class", "");
rtc.attachStream(stream, clone.attr('id'));
ppChat.WebRTC.displaywebcamVideos();
});
/* when another user disconnects */
rtc.on('disconnect stream', function(disconnecting_socket, disconnecting_username) {
ppChat.dispsystemmessage(disconnecting_username + " has left the room");
ppChat.WebRTC.removeVideo(disconnecting_socket);
ppChat.WebRTC.removeUser(disconnecting_socket);
});
ppChat.initChat();
}
},
calcNumPerRow : function() {
var len = webcam_videos.length;
var biggest;
len++;
biggest = Math.ceil(Math.sqrt(len));
while (len % biggest !== 0) {
biggest++;
}
return biggest;
},
displaywebcamVideos : function() {
var perRow = ppChat.WebRTC.calcNumPerRow();
var numInRow = 0;
for (var i = 0, len = webcam_videos.length; i < len; i++) {
var video = webcam_videos[i];
ppChat.WebRTC.setwebcamSize(video);
numInRow = (numInRow + 1) % perRow;
}
},
setwebcamSize : function(video) {
var perRow = ppChat.WebRTC.calcNumPerRow();
var perColumn = Math.ceil(webcam_videos.length / perRow);
var width = webcam_width;
var height = webcam_height;
video.attr('width', webcam_width);
video.attr('height', webcam_height);
video.attr('style','position:relative;left:0px;top:0px;');
},
cloneUser : function(domId, socketId, username) {
var user = $('#' + domId);
var clone = user.clone();
clone.attr('id',"uremote" + socketId);
$('#users').append(clone);
$('#' + clone.attr('id')).attr("class", "");
$('#' + clone.attr('id')).html(username);
chat_users.push(username);
return clone;
},
cloneVideo : function(domId, socketId) {
var video = $('#' + domId);
var clone = video.clone();
clone.attr('id',"vremote" + socketId);
$('#webcam-videos').append(clone);
webcam_videos.push(clone);
return clone;
},
removeVideo : function(socketId) {
var video = $('#vremote' + socketId);
if (video) {
webcam_videos.splice(webcam_videos.indexOf(video), 1);
video.remove();
}
},
removeUser : function(socketId) {
var user = $('#uremote' + socketId);
if (user) {
chat_users.splice(chat_users.indexOf(user), 1);
user.remove();
}
}
},
Errors: {
displayErrors : function(errMsg) {
alert(errMsg);
}
}
}
window.onresize = function(event) {
ppChat.WebRTC.displaywebcamVideos();
};
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