PNGEncoder

(Preview)

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The PNGEncoder class converts raw bitmap images into encoded images using Portable Network Graphics (PNG) lossless compression.

For the PNG specification, see http://www.w3.org/TR/PNG/

Public Properties

	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		contentType : String [read-only] The MIME type for the PNG encoded image.	PNGEncoder

Public Methods

	Method		Defined By
		PNGEncoder() Constructor.	PNGEncoder
		encode(bitmapData:BitmapData):ByteArray Converts the pixels of a BitmapData object to a PNG-encoded ByteArray object.	PNGEncoder
		encodeByteArray(byteArray:ByteArray, width:int, height:int, transparent:Boolean = true):ByteArray Converts a ByteArray object containing raw pixels in 32-bit ARGB (Alpha, Red, Green, Blue) format to a new PNG-encoded ByteArray object.	PNGEncoder
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

Property Detail

Constructor Detail

Method Detail

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	`byteArray:ByteArray` — The input ByteArray object containing raw pixels. This ByteArray should contain `4 width height` bytes. Each pixel is represented by 4 bytes, in the order ARGB. The first four bytes represent the top-left pixel of the image. The next four bytes represent the pixel to its right, etc. Each row follows the previous one without any padding.

	`width:int` — The width of the input image, in pixels.

	`height:int` — The height of the input image, in pixels.

	`transparent:Boolean` (default = `true`) — If `false`, alpha channel information is ignored but you still must represent each pixel as four bytes in ARGB format.

PNGEncoder - AS3 Flex