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mx.graphics 

ImageSnapshot  - AS3 Flex

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Elementos de linguagem

Constantes globais
Funções globais
Operadores
Instruções, palavras-chave e diretivas
Tipos especiais

Apêndices

Novidades
Erros do compilador
Avisos do compilador
Erros de runtime
Migrando para o ActionScript 3
Conjuntos de caracteres suportados
Tags MXML apenas
Elementos XML de movimento
Marcas de texto cronometradas
Lista de elementos deprecados
Constantes de Implementação de Acessibilidade
Como Usar Exemplos do ActionScript
Aspectos jurídicos
Pacotemx.graphics
Classepublic dynamic class ImageSnapshot
HerançaImageSnapshot Inheritance Object

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

A helper class used to capture a snapshot of any Flash component that implements flash.display.IBitmapDrawable, including Flex UIComponents.

An instance of this class can be sent as a RemoteObject to Adobe's LiveCycle Data Services to generate a PDF file of a client-side image. If you need to specify additional properties of the image beyond its contentType, width, and height properties, you should set name/value pairs on the properties object.

In earlier versions of Flex, you set these additional properties on the ImageSnapshot instance itself. This class is still dynamic in order to allow that, but in a future version of Flex it might no longer be dynamic.



Propriedades públicas
 PropriedadeDefinido por
 Inheritedconstructor : Object
Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto.
Object
  contentType : String
The MIME content type for the image encoding format that was used to capture this snapshot.
ImageSnapshot
  data : ByteArray
The encoded data representing the image snapshot.
ImageSnapshot
  defaultEncoder : Class
[estático] The default mx.graphics.codec.IImageEncoder implementation used to capture images.
ImageSnapshot
  height : int
The image height in pixels.
ImageSnapshot
  properties : Object
An Object containing name/value pairs specifying additional properties of the image.
ImageSnapshot
  width : int
The image width in pixels.
ImageSnapshot
Métodos públicos
 MétodoDefinido por
  
ImageSnapshot(width:int = 0, height:int = 0, data:ByteArray = null, contentType:String = null)
Constructor.
ImageSnapshot
  
captureBitmapData(source:IBitmapDrawable, matrix:Matrix = null, colorTransform:flash.geom:ColorTransform = null, blendMode:String = null, clipRect:Rectangle = null, smoothing:Boolean = false):BitmapData
[estático] A utility method to grab a raw snapshot of a UI component as BitmapData.
ImageSnapshot
  
captureImage(source:IBitmapDrawable, dpi:Number = 0, encoder:IImageEncoder = null, scaleLimited:Boolean = true):ImageSnapshot
[estático] A utility method to grab a snapshot of a component, scaled to a specific resolution (in dpi) and encoded into a specific image format.
ImageSnapshot
  
[estático] A utility method to convert an ImageSnapshot into a Base-64 encoded String for transmission in text based serialization formats such as XML.
ImageSnapshot
 Inherited
Indica se um objeto tem uma propriedade especificada definida.
Object
 Inherited
Indica se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro.
Object
 Inherited
Indica se a propriedade especificada existe e é enumerável.
Object
 Inherited
Define a disponibilidade de uma propriedade dinâmica para operações de repetição.
Object
 Inherited
Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade.
Object
 Inherited
Retorna a representação de string do objeto especificado.
Object
 Inherited
Retorna o valor primitivo do objeto especificado.
Object
Constantes públicas
 ConstanteDefinido por
  MAX_BITMAP_DIMENSION : int = 2880
[estático] The maximum width and height of a Bitmap.
ImageSnapshot
Detalhes da propriedade

contentType

propriedade
contentType:String

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

The MIME content type for the image encoding format that was used to capture this snapshot. For PNG format images, the MIME type is "image/png". For JPG or JPEG images, the MIME type is "image/jpeg"



Implementação
    public function get contentType():String
    public function set contentType(value:String):void

data

propriedade 
data:ByteArray

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

The encoded data representing the image snapshot.



Implementação
    public function get data():ByteArray
    public function set data(value:ByteArray):void

defaultEncoder

propriedade 
public static var defaultEncoder:Class

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

The default mx.graphics.codec.IImageEncoder implementation used to capture images. The two implementations are PNGEncoder and JPEGEncoder. The default encoder uses the PNG format.

height

propriedade 
height:int

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

The image height in pixels.



Implementação
    public function get height():int
    public function set height(value:int):void

properties

propriedade 
properties:Object

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

An Object containing name/value pairs specifying additional properties of the image.

You generally supply such information only when sending an ImageSnapshot instance to Adobe's LiveCycle Data Services in order to generate a PDF file. You can either set the entire object or set individual name/value pairs on the pre-existing empty Object.

O valor padrão é {}.



Implementação
    public function get properties():Object
    public function set properties(value:Object):void

width

propriedade 
width:int

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

The image width in pixels.



Implementação
    public function get width():int
    public function set width(value:int):void
Detalhes do construtor

ImageSnapshot

()Construtor
public function ImageSnapshot(width:int = 0, height:int = 0, data:ByteArray = null, contentType:String = null)

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

Constructor.

Parâmetros
width:int (default = 0) — Width of the image.
 
height:int (default = 0) — Height of the image.
 
data:ByteArray (default = null) — A byte array to contain the image.
 
contentType:String (default = null) — The encoder format type for the image, either PNGEncoder or JPEGEncoder.
Detalhes do método

captureBitmapData

()método
public static function captureBitmapData(source:IBitmapDrawable, matrix:Matrix = null, colorTransform:flash.geom:ColorTransform = null, blendMode:String = null, clipRect:Rectangle = null, smoothing:Boolean = false):BitmapData

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

A utility method to grab a raw snapshot of a UI component as BitmapData.

Parâmetros

source:IBitmapDrawable — An object that implements the flash.display.IBitmapDrawable interface.
 
matrix:Matrix (default = null) — A Matrix object used to scale, rotate, or translate the coordinates of the captured bitmap. If you do not want to apply a matrix transformation to the image, set this parameter to an identity matrix, created with the default new Matrix() constructor, or pass a null value.
 
colorTransform:flash.geom:ColorTransform (default = null) — A ColorTransform object that you use to adjust the color values of the bitmap. If no object is supplied, the bitmap image's colors are not transformed. If you must pass this parameter but you do not want to transform the image, set this parameter to a ColorTransform object created with the default new ColorTransform() constructor.
 
blendMode:String (default = null) — A string value, from the flash.display.BlendMode class, specifying the blend mode to be applied to the resulting bitmap.
 
clipRect:Rectangle (default = null) — A Rectangle object that defines the area of the source object to draw. If you do not supply this value, no clipping occurs and the entire source object is drawn.
 
smoothing:Boolean (default = false) — A Boolean value that determines whether a BitmapData object is smoothed when scaled.

Retorna
BitmapData — A BitmapData object representing the captured snapshot or null if the source has no visible bounds.

captureImage

()método 
public static function captureImage(source:IBitmapDrawable, dpi:Number = 0, encoder:IImageEncoder = null, scaleLimited:Boolean = true):ImageSnapshot

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

A utility method to grab a snapshot of a component, scaled to a specific resolution (in dpi) and encoded into a specific image format.

Parâmetros

source:IBitmapDrawable — An object that implements the flash.display.IBitmapDrawable interface.
 
dpi:Number (default = 0) — The resolution in dots per inch. If a resolution is not provided, the current on-screen resolution is used by default.
 
encoder:IImageEncoder (default = null) — The image format used to encode the raw bitmap. The two encoders are PNGEncoder and JPEGEncoder. If an encoder is not provided, the default is PNGEncoder.
 
scaleLimited:Boolean (default = true) — The maximum width or height of a bitmap in Flash is 2880 pixels - if scaleLimited is set to true the resolution will be reduced proportionately to fit within 2880 pixels, otherwise, if scaleLimited is false, smaller snapshot windows will be taken and stitched together to capture a larger image. The default is true.

Retorna
ImageSnapshot — An ImageSnapshot holding an encoded captured snapshot and associated image metadata.

encodeImageAsBase64

()método 
public static function encodeImageAsBase64(snapshot:ImageSnapshot):String

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

A utility method to convert an ImageSnapshot into a Base-64 encoded String for transmission in text based serialization formats such as XML.

Parâmetros

snapshot:ImageSnapshot — An image captured as an mx.graphics.ImageSnapshot.

Retorna
String — A string representing the base64 encoded snapshot.

Elementos da API relacionados

Detalhes da constante

MAX_BITMAP_DIMENSION

Constante
public static const MAX_BITMAP_DIMENSION:int = 2880

Versão da linguagem: ActionScript 3.0
Versão de produto: Flex 3
Versões de runtime: Flash Player 9, AIR 1.1

The maximum width and height of a Bitmap.





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O conteúdo na Referência do ActionScript 3.0 aparece em inglês

Nem todas as partes da Referência do ActionScript 3.0 estão traduzidas em todos os idiomas. Quando um elemento de um idioma não está traduzido, ele é exibido em inglês. Por exemplo, a classe ga.controls.HelpBox não está traduzida em nenhum idioma. Por isso, na versão da referência em português do Brasil, a classe ga.controls.HelpBox é exibida em inglês.