HTML5 is currently being developed as the next major revision of HTML (HyperText Markup Language), the core markup language of the World Wide Web. HTML5 is the proposed next standard for HTML 4.01, XHTML 1.0 and DOM Level 2 HTML. It aims to reduce the need for proprietary plug-in-based rich internet application (RIA) technologies such as Adobe Flash, Sumisho Curl Surge RTE and Microsoft Silverlight.

HTML 5 New APIs

In addition to specifying markup, HTML5 specifies scripting application programming interfaces (APIs).

• The canvas element for immediate mode 2D drawing.
• Timed media playback
• Offline storage database (offline web applications)
• Document editing
• Drag-and-drop
• 3D Transforms
• Geo-Loaction (functionalities like foursquare and yelp)
• Browser history management and more..

Click to open HTML 5 Demos and Examples http://html5demos.com/
Another Demo Website ( Click on thumbnails to load different app) http://mrdoob.com/91/Ball_Pool_HTML5

Calculation of support of currently displayed feature lists

Browser                                                 IE               Firefox    Safari       Chrome     Opera

Present                                                  8.0: 26% 3.6: 77% 5.0: 87% 5.0: 86% 10.5: 72%
Near Future (early 2010)             8.0: 26% 3.6: 77% 5.0: 87% 5.0: 86% 10.5: 72%
Future (late 2010 or later)           9.0: 48% 4.0: 89% 5.*: 89% 6.0: 90% 10.6: 79%

View HTML5 & CSS3 READINESS across several browsers http://html5readiness.com/

HTML5 aims to change all that. When it is finalized, the new standard will include tags and APIs for improved interactivity, multimedia, and localization. Modernized HTML will free them from reliance on proprietary plug-ins such as Flash, QuickTime, and Silverlight.

Note: Use Google Chrome to view HTML5 Demo Apps.

Solution:
To overcome the issue we need to add multiline property well before we set the HTML text in the TextField.

Solution Code:

var textField : TextField = new TextField();
textField.multiline = true;
textField.htmlText = String(itemObject.data);
addChild(textField);

Flash Player supports the following HTML entities:

Some of the ways:

1. While creating new Array or Object.
Never use
new Array();
new Object();

Always use
var object:Object = {};
var arr:Array = [];

2. Dont use too many dot syntax.
Never use
outcontainer.inner2.inner1.inner.x = 10;
outcontainer.inner2.inner1.inner.width = 100;

Always use
var spr:Sprite = outcontainer.inner2.inner1.inner as Sprite
spr.x = 10;
spr.width = 100;

Note: Idea is to hold reference of the Object

3. Use int in for loop

Example:
for( var count:int=0; count<10;count++){}

4. Hold the length reference in a variable before for loop.

Example:
var len:Number = arr.length();
for( var count:int=0; count

5. To empty an array.

use arr = []; or arr.length = 0

6. Never use setStyles() in Flex. Use of this method makes calls to Framework.

7. Use XOR operator to swap variables without usage of temporary variable.

Never use
var a:Number = 10;
var b:Number = 20;
var temp:Number;
temp = b;
b = a;
a = temp;

Always use
var a:Number = 10;
var b:Number = 20;
a = a ^b;
b = a^b;
a = a^b;

8. To declare two or more variable of same type.

Never use
var a:Number;
var b:Number;
var c:Number;

Always use
var a:int,b:int,c:int;

More in next post… Happy coding

Suppose we need to convert 14 – 100 as 0% – 100%

X may be any input from 14 to 100, and the calculation is

((X – 14)/(100 – 14)) * 100

This might be usefull in scrollBar calculations or when we want to restrict size of Image and so on.

But the For each can be used only when we need the value of an object not the key, loop is bit fast than for in.

Using for in loop we can get the value, key pair of an object.

Sample For in loop:

for(var item:* in object)
trace(item,object[item]);

Sample For each loop:

for(var item:* in object)
trace(item);

Note: Above outputs only the value not the Object key.

1. Open new document of any size and create a shape that going to be a button. The below is the shape I have created.

2. Select some irregular portion of the shape which going to be the higlight area in button. Copy and paste the highligt area to new Layer.

3. Next Apply white to alpha gradient to shape.

Below is the gradient setting I applied.

4. Select the highlight area and scale it by pressing Ctrl + alt + s and scale it down by 97%

Here is the final button with dropshadow filter effect

Download the Final Output Files.

mx_internal is a way to access variables that are hidden but available to use for developers.

we can use the variables in the code before that we need to import.

import mx.core.mx_internal;

< ?xml version="1.0" encoding="utf-8"?>


	
		< ![CDATA[
			import mx.controls.TextInput;
			import mx.core.mx_internal;

			protected function initButton():void
			{
				var tf:TextField = bt.mx_internal::getTextField()
				tf.visible = false;
			}
		]]>
	
	

Here we are accesing the TextField from button and making it invisible. So this is just an easy way to access all the variables of a component.

Note:
Adobe uses the mx_internal namespace to mark things that may change in future versions of the framework , so you have to use it at your own risk.

Difficulty:
To Beginners

Final Output File:

Open New Document in Flash using File -> New or Ctrl + N

Change Background color(#090D11) of the document By pressing Ctrl + J or from Properties Dialog box

Create A oval shape With alpha 1% and of any dimension

Convert the Oval Shape to MovieClip by selecting the shape in stage and select Modify-> convert to symbol.. from Menu

Next double click to edit the MovieClip. Create a guide layer for layer1 and draw an oval outline.
Note: To draw an outlite, create an oval shape and delete the fill.

Next Animate the oval shape on the layer 1, use many frames to move the object very slow.

Make sure the starting point and end point are the same in animation (Download and Open Steps_Middle.fla)

Duplicate the animate shape and resize them using transform tool.

Final file is ready.

So before starting the tutorial download a nice panoramic picture from Internet. Rename the file as ‘panorama.jpg’

Difficulty:
Beginner to Intermediate Actionscript knowledge.

At the End of this tutorial we will know how to use,

• Ternary operator in ActionScript.
• HitTestPoint in ActionScript

Using Ternary Operator:

The ternary operator “?:” is shorter version of “IF Else”  statement used to evaluate a condition is either true of false, The syntax for ternary operator is

(Condition)?if condition is true : if condition is false;

We can write the above for IF ELSE
if(Condition)
{
If Condition is true;
}else
{
If Condition is false;
}

Using hitTestPoint Method of DisplayObject:

hitTestPointMethod used to test whether a point hits over a shape even it is irregular one.

Syntax for hitTestPoint:

displayObject.hitTestPoint(point.x, point.y, true|false);

Note: Supply true if you want to test against actual shape and false to test against the bounding box.

Demo File:
Below is the output file of this Actionscript panoramic viewer.

Image from acojon.deviantart.com

Create a new Flash File( Actionscript 3.0 ) save it on disk, where the panaromic picture got saved.

Change the Document Size by pressing Ctrl + J , Set dimension to 500 px X 500 px

Create a rectangle shape of above dimensions with x,y = 0,0 and convert it to MovieClip.

Give instance name for the MovieClip as “touchMC”

Next, We need to load the Panorama image in to Flash. We can load external files into Flash using Loader Class.

var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
loader.load(new URLRequest("panorama.jpg"));

When the image got loaded in to Flash completeHandler will be triggered. Where we are duplicating the loaded image to create panoramic effect using Bitmap Class.

var image1:Bitmap = (Bitmap)(loader.content);
	var image2:Bitmap = new Bitmap(image1.bitmapData.clone());
	holder_mc.addChild(image1);
	holder_mc.addChild(image2);
	addChild(holder_mc);

Finally we are adding ENTER_FRAME event to stage, which will be listened by PanaromaMove function.

stage.addEventListener(Event.ENTER_FRAME, PanaromaMove);

In ENTER_FRAME function we are checking whether the Image Pans across right limit or left limit and adusting it accordingly to the stage.

touchMC.hitTestPoint(this.mouseX, this.mouseY) == true? _flag = true:_flag = false;

	if(_flag)
	{

		//this.mouseX>stage.stageWidth/2 ? holder_mc.x -= 10 : holder_mc.x += 10;
		this.mouseX>stage.stageWidth/2 ? holder_mc.x += Math.ceil((((stage.stageWidth/2)- this.mouseX)*.01)*_speed): holder_mc.x -=Math.floor(((this.mouseX-(stage.stageWidth/2))*.01)*_speed);

		if (holder_mc.x>0)
			holder_mc.x= -holder_mc.width /2;
		else if (holder_mc.x < stage.stageWidth - holder_mc.width)
			holder_mc.x= stage.stageWidth - holder_mc.width/2 ;

	}

Entire code for Reference.

import flash.display.BitmapData;
import flash.geom.Rectangle;

var _flag:Boolean = false;
var _speed:Number = 4;

var loader:Loader = new Loader();

loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
loader.load(new URLRequest("panorama.jpg"));

var holder_mc:Sprite = new Sprite();

function completeHandler(event:Event):void{

	var image1:Bitmap = (Bitmap)(loader.content);
	var image2:Bitmap = new Bitmap(image1.bitmapData.clone());
	holder_mc.addChild(image1);
	holder_mc.addChild(image2);
	image1.x = 0;
	image2.x = image1.width;

	addChild(holder_mc);
	holder_mc.x = 0;

	stage.addEventListener(Event.ENTER_FRAME, PanaromaMove);
}
function PanaromaMove(e:Event):void
{

	touchMC.hitTestPoint(this.mouseX, this.mouseY) == true? _flag = true:_flag = false;

	if(_flag)
	{

		//this.mouseX>stage.stageWidth/2 ? holder_mc.x -= 10 : holder_mc.x += 10;
		this.mouseX>stage.stageWidth/2 ? holder_mc.x += Math.ceil((((stage.stageWidth/2)- this.mouseX)*.01)*_speed): holder_mc.x -=Math.floor(((this.mouseX-(stage.stageWidth/2))*.01)*_speed);

		if (holder_mc.x>0)
			holder_mc.x= -holder_mc.width /2;
		else if (holder_mc.x < stage.stageWidth - holder_mc.width)
			holder_mc.x= stage.stageWidth - holder_mc.width/2 ;

	}
}

In this tutorial we learnt some basics of Flash ActionScript3.0 and we have created Panaromic viewer in AS3

Download the Final Output Files.