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pdf417 barcode generator javascript // Transform Listeners in Java
// Transform Listeners PDF417 Creator In Java Using Barcode maker for Java Control to generate, create PDF-417 2d barcode image in Java applications. www.OnBarcode.comReading PDF-417 2d Barcode In Java Using Barcode decoder for Java Control to read, scan read, scan image in Java applications. www.OnBarcode.comAIR 2.0 ENHANCEMENTS OVERVIEW
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SDK AIR 1.5 & SDK 3.4 AIR 2.0 & SDK 4.0
CPU 2.5 2.5
Threads 6 6
Real Memory 30.20 MB 28.6 MB
Virtual Memory 47.80 MB 41.7 MB
WebKit Performance Increase
WebKit (http://webkit.org/) is an open-source browser that has been available since AIR 1.0. The WebKit engine renders HTML and executes JavaScript. WebKit is the engine that drives Safari, claimed by Apple and others to be the fastest browser. Adobe AIR 2.0 uses the same branch of WebKit as the Safari 4 beta: http://trac.webkit.org/browser/releases/Apple/Safari%204%20Public%20Beta. The most significant feature of using this branch of WebKit is the usage of SquirrelFish Extreme (SFX), which has been integrated into the WebKit engine and increases the overall performance of WebKit (see Figure 5-10). Figure 5-10. WebKit s vs. JavaScript s performance in different versions as provided by WebKit.org Using a newer branch of WebKit provides faster performance and additional functionality. SquirrelFish Extreme: The new WebKit engine resulting in faster performance. According to SunSpider, the performance is more than double the speed as compared to the regular SquirrelFish. The reason SFX is faster is mainly due to bytecode optimizations, polymorphic inline caching, a lightweight JIT compiler, and an expression engine that uses the JIT infrastructure. See www.satine.org/archives/2008/09/19/squirrelfish-extremefastest-javascript-engine-yet/. CSS transitions: WebKit added built-in animations using CSS. By describing how to animate from an old value to a new value over time, you can create animations. CSS transformations: Transformations, via the -webkit-transform property, allows you to scale, rotate, and skew blocks of elements. AIR 2.0 ENHANCEMENTS OVERVIEW
CSS animations: Animation that uses the -webkit-transition tag and lets you set timings for fades, rotation, expansion, collapses, and others. CSS gradients: You can create gradients in CSS. There are two types of gradients: linear gradients and radial gradients. The syntax is as follows: -webkit-gradient(<type>, <point> [, <radius>] , <point> [, <radius>] [, <stop>]*). WebKit CSS selectors: You can access the DOM faster and easier using the Selectors API. It allows you to select elements within a document using CSS. WebKit is embedded into AIR and lets you create HTML/JS/PDF objects and render them as Flash objects. You can then manipulate these objects just like any other object in Flex. Take a look at a simple application that uses the HTML tag and displays HTML content. < xml version="1.0" encoding="utf-8" > <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="800" height="600"> <mx:HTML id="htmlObject" location="http://google.com" width="400" height="400" x="126" y="404" rotation="280"/> </s:WindowedApplication> Take a look at the following example using the same HTML component, which allows you to test some of the new WebKit functionality: < xml version="1.0" encoding="utf-8" > <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="800" height="600" initialize="initializeHandler(event)"> <fx:Script> <![CDATA[ import flash.utils.Timer; import mx.core.UIComponent; import flash.events.Event; import mx.controls.HTML; import mx.events.FlexEvent; private var htmlTransitions:XML = <html> <div onmouseover="this.style.opacity = 0;" onmouseout="this.style.opacity=1" style="-webkit-transition: opacity 1s linear; background-color: #efefef; border:5px solid black;"> CSS Transitions Example </div> </html>; private var html:HTML; private var timer:Timer = new Timer(1, 10000); protected function initializeHandler(event:FlexEvent):void { html = new HTML(); html.width = 400; html.height = 400; html.addEventListener( Event.COMPLETE, onComplete ); component.addChild( html ); } private function loadHTMLCode(htmlText:XML):void { timer.start(); html.htmlText = htmlText; } private function loadHTMLPage(location:String):void { timer.start(); html.location = location; } private function onComplete(event:Event):void { trace("page loaded after: "); label.text = "HTML code executed in " + this.timer.currentCount + " seconds"; timer = new Timer(1, 10000); } ]]> </fx:Script> <fx:Declarations> <s:RadioButtonGroup id="radiogroup"/> </fx:Declarations> <mx:UIComponent id="component" width="400" height="400" x="10" y="42"/> <s:RadioButton x="10" y="10" label="Transitions" groupName="radiogroup" click="loadHTMLCode(htmlTransitions);"/> <s:RadioButton x="103" y="10" label="Animations" groupName="radiogroup" click="loadHTMLPage('asset/Animation.html')"/> <s:RadioButton x="275" y="10" label="Gradient" groupName="radiogroup" click="loadHTMLPage('asset/Gradient.html')"/> <s:RadioButton x="193" y="10" label="Transform" groupName="radiogroup" click="loadHTMLPage('asset/Transform.html')"/> <s:RadioButton x="353" y="10" label="Selectors" groupName="radiogroup" click="loadHTMLPage('asset/Selectors.html')"/> <mx:Label id="label" x="9" y="450" width="374"/>
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