How to Create Applications in Eyeos

HOW TO CREATE APPLICATIONS IN eyeOS

BY,V.V.N.Reddy(07071A0572)

INTRODUCTION

• With traditional desktop computing, we run copies of

software programs on our own computer. The documents

we create are stored on our own pc.

• Although documents can be accessed from other

computers on the network, they can’t be accessed by

computers outside the network. This is PC-centric.

CLOUD COMPUTING

What is cloud?

The cloud is a large group of interconnected computers.These computers can be personal computers or network

servers; they can be public or private. Data served by the cloud are available to broad group of

users, cross-enterprise and cross-platform.

What is cloud computing?

Cloud computing is Internet-based computing.The software programs were stored on servers accessed via the

Internet.Delivering hosted services over the Internet.Any authorized user can access these docs and apps from any

computer over any Internet connection.

SERVERS IN CLOUD

WHAT IS eyeOS ?

eyeOSeyeOS is a desktop entirely usable from a web browser.

It includes collaboration applications.

Provides framework to develop new web apps.

You can open your desktop no matter where you are.

Cloud Infrastructure Services (IaaS)

Cloud Platform Services (PaaS)

Cloud End-User Services (SaaS)

Physical Infrastructure

Service Users

Clo

ud P

rovi

ders

Ser

vice

Pro

vide

rs

Public Cloud

Private Cloud

Hybrid Cloud

ARCHITECHTURE

How the application works ?

Encryption Algorithm

== '''Syntax''' == reqLib('eyeCrypt', 'decrypt', array('data' => $data, 'key' => $key,

'cipher' => $cipher))== '''Description''' ==Decrypts a string with a given key.== '''Arguments''' =='''data''': string to decrypt.'''key''': key for the data.'''cypher''': ciphering algorithm in which to decrypt the data. The

supported algorithms are rc4 and xxtea for eyeOS 1.2.== '''Return Values''' ==Returns the resulting string decrypted using the specified algorithm.== '''Example''' == $cry = reqLib('eyeCrypt', 'decrypt', array('data' => $encrypted_string,

'key' => 'eyeOS', 'cipher' => 'rc4'));

Basic Calculator in eyeOs

JavaScriptSelecting language :

lang['Calculator'] = 'Calculator';

Main function : function calculator_application(checknum, pid, args) {

var app = new eyeos.application.Calculator(checknum, pid);app.drawGUI();

}qx.Class.define("eyeos.application.Calculator", {

extend: eyeos.system.EyeApplication,construct: function(checknum, pid) {arguments.callee.base.call(this,"Calculator", checknum, pid);

},

var b9 = new qx.ui.form.Button("9");buttonContainer.add(b9, {column: 2, row: 4});grid.setColumnFlex(2, 100);grid.setRowFlex(4, 100);

b9.addListener("execute", function () {if(display.getValue() == "0") {display.setValue("9");} else {display.setValue(String(parseFloat(display.getValue() * 10 + 9)));}});

var bMult = new qx.ui.form.Button("*");buttonContainer.add(bMult, {column: 3, row:

4});grid.setColumnFlex(3, 100);grid.setRowFlex(3, 100);

bMult.addListener("execute", function () {lastNumber = parseInt(display.getValue());currentOperation = "mult";display.setValue("0");});

XML SCHEMA: <?xml version="1.0" ?> -<meta>

<entry key="eyeos.application.name">Calculator</entry>   <entry key="eyeos.application.author">eyeOS Team</entry>   <entry key="eyeos.application.version">1.0</entry>   <entry key="eyeos.application.description">A calculator</entry>   <entry key="eyeos.application.license">AGPL</entry>   <entry key="eyeos.application.category">Utils</entry>   <entry

key="eyeos.application.iconUrl">sys:///extern/images/48x48/apps/accessories-calculator.png</entry>

  <entry key="eyeos.application.taskBarIconUrl">sys:///extern/images/16x16/apps/accessories-calculator.png</entry>

- <entry key="eyeos.application.systemParameters" type="array">  <entry key="listable">true</entry>   <entry key="owner">root</entry>   <entry key="group">users</entry>   <entry key="permissions">---x--x--x</entry>   <entry key="anonymous">false</entry>   <entry key="suid">false</entry>   </entry></meta>

CALENDAR

WORD PROCESSOR

FILE MANAGER

REFERENCES eyeOS default applications from project's official SVN

serverSoftpedia talks about eyeOS 1.0 releaseeyeOS 1.5 Released | eyeOS Professional Services availableeyeOS - a Genuine Web OS by Linux.comeyeOS Developers CommunitySourceForge.net: 2007 Community Choice AwardseyeOS ForumseyeOS WikiOpenDesktop.org announces the eyeos-apps communityhttp://sourceforge.net/http://www.eyeos.org/http://wiki.eyeos.org/http://eyeos-apps.org/

THANK YOU

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