| Pacchetto | spark.primitives |
| Classe | public class BitmapImage |
| Ereditarietà | BitmapImage  GraphicElement EventDispatcher Object |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.0 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Altri esempi
Nascondi proprietà pubbliche ereditate
Mostra proprietà pubbliche ereditate| Proprietà | Definito da | ||
|---|---|---|---|
 | alpha : Number
The level of transparency of the graphic element. | GraphicElement | |
| alwaysCreateDisplayObject : Boolean
Specifies that this GraphicElement is to be associated with and be rendered
to its own DisplayObject. | GraphicElement | |
| baseline : Object
The vertical distance in pixels from the anchor target to
the control's baseline position. | GraphicElement | |
| baselinePosition : Number [sola lettura]
The y-coordinate of the baseline
of the first line of text of the component. | GraphicElement | |
| bitmapData : BitmapData [sola lettura]
Returns a copy of the BitmapData object representing
the currently loaded image content (unscaled). | BitmapImage | ||
| blendMode : String
A value from the BlendMode class that specifies which blend mode to use. | GraphicElement | |
| bottom : Object
The vertical distance in pixels from the bottom edge of the component to the
anchor target's bottom edge. | GraphicElement | |
| bytesLoaded : Number [sola lettura]
The number of bytes of the image already loaded. | BitmapImage | ||
| bytesTotal : Number [sola lettura]
The total image data in bytes loaded or pending load. | BitmapImage | ||
| clearOnLoad : Boolean
Denotes whether or not to clear previous
image content prior to loading new content. | BitmapImage | ||
| constructor : Object
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | Object | |
| contentLoader : IContentLoader
Optional custom image loader (e.g. | BitmapImage | ||
| contentLoaderGrouping : String
Optional content grouping identifier to pass to the an
associated IContentLoader instance's load() method. | BitmapImage | ||
| depth : Number
Determines the order in which items inside of containers
are rendered. | GraphicElement | |
| designLayer : DesignLayer
Specifies the optional DesignLayer instance associated with this visual
element. | GraphicElement | |
| displayObject : DisplayObject [sola lettura]
The shared DisplayObject where this
IGraphicElement is drawn. | GraphicElement | |
| displayObjectSharingMode : String
Indicates the association between this IGraphicElement and its
display objects. | GraphicElement | |
| explicitHeight : Number
Number that specifies the explicit height of the component,
in pixels, in the component's coordinates. | GraphicElement | |
| explicitMaxHeight : Number
The maximum recommended height of the component to be considered
by the parent during layout. | GraphicElement | |
| explicitMaxWidth : Number
The maximum recommended width of the component to be considered
by the parent during layout. | GraphicElement | |
| explicitMinHeight : Number
The minimum recommended height of the component to be considered
by the parent during layout. | GraphicElement | |
| explicitMinWidth : Number
The minimum recommended width of the component to be considered
by the parent during layout. | GraphicElement | |
| explicitWidth : Number
Number that specifies the explicit width of the component,
in pixels, in the component's coordinates. | GraphicElement | |
| fillMode : String
Determines how the bitmap fills in the dimensions. | BitmapImage | ||
| filters : Array
An indexed array that contains each filter object currently associated with the graphic element. | GraphicElement | |
| hasLayoutMatrix3D : Boolean [sola lettura]
Contains true if the element has 3D Matrix. | GraphicElement | |
| height : Number
The height of the graphic element. | GraphicElement | |
| horizontalAlign : String
The horizontal alignment of the content when it does not have
a one-to-one aspect ratio and scaleMode is set to
mx.graphics.BitmapScaleMode.LETTERBOX. | BitmapImage | ||
| horizontalCenter : Object
The horizontal distance in pixels from the center of the component to the
center of the anchor target's content area. | GraphicElement | |
| id : String
The identity of the component. | GraphicElement | |
| includeInLayout : Boolean
Specifies whether this element is included in the layout of the parent. | GraphicElement | |
| is3D : Boolean [sola lettura]
Contains true when the element is in 3D. | GraphicElement | |
| layoutDirection : String
Specifies the desired layout direction for an element: one of LayoutDirection.LTR
(left to right), LayoutDirection.RTL (right to left), or null (inherit). | GraphicElement | |
| left : Object
The horizontal distance in pixels from the left edge of the component to the
anchor target's left edge. | GraphicElement | |
| luminosityClip : Boolean
A property that controls whether the luminosity
mask clips the masked content. | GraphicElement | |
| luminosityInvert : Boolean
A property that controls the calculation of the RGB
color value of a graphic element being masked by
a luminosity mask. | GraphicElement | |
| mask : DisplayObject
The calling display object is masked by the specified mask object. | GraphicElement | |
| maskType : String
Defines how the mask is applied to the GraphicElement.
The possible values are MaskType.CLIP, MaskType.ALPHA, and
MaskType.LUMINOSITY.
Clip Masking
When masking in clip mode, a clipping masks is reduced to 1-bit. | GraphicElement | |
| maxHeight : Number
The maximum recommended height of the component to be considered
by the parent during layout. | GraphicElement | |
| maxWidth : Number
The maximum recommended width of the component to be considered
by the parent during layout. | GraphicElement | |
| measuredHeight : Number
The default height of the component, in pixels. | GraphicElement | |
| measuredWidth : Number
The default width of the component, in pixels. | GraphicElement | |
| measuredX : Number
The default measured bounds top-left corner relative to the origin of the element. | GraphicElement | |
| measuredY : Number
The default measured bounds top-left corner relative to the origin of the element. | GraphicElement | |
| minHeight : Number
The minimum recommended height of the component to be considered
by the parent during layout. | GraphicElement | |
| minWidth : Number
The minimum recommended width of the component to be considered
by the parent during layout. | GraphicElement | |
| owner : DisplayObjectContainer
The owner of this IVisualElement object. | GraphicElement | |
| parent : DisplayObjectContainer [sola lettura]
The parent container or component for this component. | GraphicElement | |
| percentHeight : Number
Specifies the height of a component as a percentage
of its parent's size. | GraphicElement | |
| percentWidth : Number
Specifies the width of a component as a percentage
of its parent's size. | GraphicElement | |
| postLayoutTransformOffsets : mx.geom:TransformOffsets
Defines a set of adjustments that can be applied to the object's
transform in a way that is invisible to its parent's layout. | GraphicElement | |
| preliminaryHeight : Number
Provides an estimate to use for height when the "measured" bounds
of the image is requested by layout, but the image data has
yet to complete loading. | BitmapImage | ||
| preliminaryWidth : Number
Provides an estimate to use for width when the "measured" bounds
of the image is requested by layout, but the image data has
yet to complete loading. | BitmapImage | ||
| right : Object
The horizontal distance in pixels from the right edge of the component to the
anchor target's right edge. | GraphicElement | |
| rotation : Number
Indicates the rotation of the element, in degrees,
from the transform point. | GraphicElement | |
| rotationX : Number
Indicates the x-axis rotation of the element instance, in degrees, from its original orientation
relative to the 3D parent container. | GraphicElement | |
| rotationY : Number
Indicates the y-axis rotation of the DisplayObject instance, in degrees, from its original orientation
relative to the 3D parent container. | GraphicElement | |
| rotationZ : Number
Indicates the rotation of the element, in degrees,
from the transform point. | GraphicElement | |
| scaleMode : String
Determines how the image is scaled when fillMode is set to
mx.graphics.BitmapFillMode.SCALE. | BitmapImage | ||
| scaleX : Number
The horizontal scale (percentage) of the element
as applied from the transform point. | GraphicElement | |
| scaleY : Number
The vertical scale (percentage) of the element
as applied from the transform point. | GraphicElement | |
| scaleZ : Number
The z scale (percentage) of the element
as applied from the transform point. | GraphicElement | |
| smooth : Boolean
Specifica se applicare un algoritmo di smussatura all'immagine bitmap. | BitmapImage | ||
| smoothingQuality : String
Determines how the image is down-scaled. | BitmapImage | ||
| source : Object
The source used for the bitmap fill. | BitmapImage | ||
| sourceHeight : Number [sola lettura]
Provides the unscaled height of the original image data. | BitmapImage | ||
| sourceWidth : Number [sola lettura]
Provides the unscaled width of the original image data. | BitmapImage | ||
| top : Object
The vertical distance in pixels from the top edge of the component to the
anchor target's top edge. | GraphicElement | |
| transform : flash.geom:Transform
Un oggetto con proprietà relative alla matrice, alla trasformazione del colore e ai limiti di pixel di un oggetto di visualizzazione. | GraphicElement | |
| transformX : Number
The x position transform point of the element. | GraphicElement | |
| transformY : Number
The y position transform point of the element. | GraphicElement | |
| transformZ : Number
The z position transform point of the element. | GraphicElement | |
| trustedSource : Boolean [sola lettura]
A read-only flag denoting whether the currently loaded
content is considered loaded form a source whose security
policy allows for cross domain image access. | BitmapImage | ||
| verticalAlign : String
The vertical alignment of the content when it does not have
a one-to-one aspect ratio and scaleMode is set to
mx.graphics.BitmapScaleMode.LETTERBOX. | BitmapImage | ||
| verticalCenter : Object
The vertical distance in pixels from the center of the component to the
center of the anchor target's content area. | GraphicElement | |
| visible : Boolean
Controls the visibility of this visual element. | GraphicElement | |
| width : Number
The width of the graphic element. | GraphicElement | |
| x : Number
The x position of the graphic element. | GraphicElement | |
| y : Number
The y position of the graphic element. | GraphicElement | |
| z : Number
The z position of the graphic element. | GraphicElement | |
| Metodo | Definito da | ||
|---|---|---|---|
Constructor. | BitmapImage | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | EventDispatcher | |
|
Returns true if this IGraphicElement is compatible and can
share display objects with the next IGraphicElement
in the sequence. | GraphicElement | |
|
Returns true if this IGraphicElement is compatible and can
share display objects with the previous IGraphicElement
in the sequence. | GraphicElement | |
|
Creates a new DisplayObject where this IGraphicElement
is drawn. | GraphicElement | |
|
Invia un evento nel flusso di eventi. | EventDispatcher | |
|
Returns the x coordinate of the element's bounds at the specified element size. | GraphicElement | |
|
Returns the y coordinate of the element's bounds at the specified element size. | GraphicElement | |
|
Returns the element's layout height. | GraphicElement | |
|
Returns the element's layout width. | GraphicElement | |
|
Returns the x coordinate that the element uses to draw on screen. | GraphicElement | |
|
Returns the y coordinate that the element uses to draw on screen. | GraphicElement | |
|
Returns the transform matrix that is used to calculate the component's
layout relative to its siblings. | GraphicElement | |
|
Returns the layout transform Matrix3D for this element. | GraphicElement | |
|
Returns the element's maximum height. | GraphicElement | |
|
Returns the element's maximum width. | GraphicElement | |
|
Returns the element's minimum height. | GraphicElement | |
|
Returns the element's minimum width. | GraphicElement | |
|
Returns the element's preferred height. | GraphicElement | |
|
Returns the element's preferred width. | GraphicElement | |
|
Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | |
|
Indica se per un oggetto è definita una proprietà specifica. | Object | |
|
Called automatically by the MXML compiler when the GraphicElement
is created using an MXML tag. | GraphicElement | |
|
Calling this method results in a call to the elements's
validateDisplayList() method
before the display list is rendered. | GraphicElement | |
|
An element must call this method when its layoutDirection changes or
when its parent's layoutDirection changes. | GraphicElement | |
|
Calling this method results in a call to the elements's
validateProperties() method
before the display list is rendered. | GraphicElement | |
|
Calling this method results in a call to the elements's
validateSize() method
before the display list is rendered. | GraphicElement | |
|
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
|
Converts the point object from the object's (local) coordinates
to the Stage (global) coordinates. | GraphicElement | |
|
Called by IGraphicElementContainer when an IGraphicElement
is added to or removed from the host component. | GraphicElement | |
|
Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
|
Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | |
| setLayoutBoundsPosition(newBoundsX:Number, newBoundsY:Number, postLayoutTransform:Boolean = true):void
Sets the coordinates that the element uses to draw on screen. | GraphicElement | |
|
Sets the layout size of the element. | GraphicElement | |
|
Sets the transform Matrix that is used to calculate the component's layout
size and position relative to its siblings. | GraphicElement | |
|
Sets the transform Matrix3D that is used to calculate the component's layout
size and position relative to its siblings. | GraphicElement | |
|
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
|
Determines whether this element can draw itself to the
sharedDisplayObject of the sequence. | GraphicElement | |
|
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
|
Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
| transformAround(transformCenter:Vector3D, scale:Vector3D = null, rotation:Vector3D = null, translation:Vector3D = null, postLayoutScale:Vector3D = null, postLayoutRotation:Vector3D = null, postLayoutTranslation:Vector3D = null, invalidateLayout:Boolean = true):void
A utility method to update the rotation, scale, and translation of the
transform while keeping a particular point, specified in the component's
own coordinate space, fixed in the parent's coordinate space. | GraphicElement | |
|
A utility method to transform a point specified in the local
coordinates of this object to its location in the object's parent's
coordinates. | GraphicElement | |
|
Called by the IGraphicElementContainer to redraw this element
in its displayObject property. | GraphicElement | |
|
Validates and updates the properties and layout of this object
by immediately calling validateProperties(),
validateSize(), and validateDisplayList(),
if necessary. | GraphicElement | |
|
Used by layout logic to validate the properties of a component
by calling the commitProperties() method. | GraphicElement | |
|
Called by the IGraphicElementContainer to validate the size of
this element. | GraphicElement | |
|
Restituisce il valore di base dell'oggetto specificato. | Object | |
|
Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher | |
| Metodo | Definito da | ||
|---|---|---|---|
|
Determines if the call to the measure() method can be skipped. | GraphicElement | |
[override]
Processes the properties set on the element. | BitmapImage | ||
|
Returns the amount of pixels occupied by the stroke on each side
of the element's bounds. | GraphicElement | |
|
Utility method that notifies the host that this element has changed and needs
its layer to be updated. | GraphicElement | |
|
Helper method to invalidate parent size and display list if
this object affects its layout (includeInLayout is true). | GraphicElement | |
[override]
Calculates the default size of the element. | BitmapImage | ||
|
Used for the implementation of the ILayoutElement interface,
returns the explicit measured height pre-transform. | GraphicElement | |
|
Used for the implementation of the ILayoutElement interface,
returns the explicit of measured width pre-transform. | GraphicElement | |
|
Transform the element's size. | GraphicElement | |
|
Transform the element's size. | GraphicElement | |
[override]
Draws the element and/or sizes and positions its content. | BitmapImage | ||
| Evento | Riepilogo | Definito da | ||
|---|---|---|---|---|
| [evento di trasmissione] Inviato quando Flash Player o l'applicazione AIR ottiene lo stato di attivazione del sistema operativo ed entra nello stato attivo. | EventDispatcher | ||
| Dispatched when content loading is complete. | BitmapImage | |||
| [evento di trasmissione] Inviato quando Flash Player o l'applicazione AIR perde l'attivazione del sistema operativo e sta entrando nello stato inattivo. | EventDispatcher | ||
| Dispatched when a network request is made over HTTP and Flash Player or AIR can detect the HTTP status code. | BitmapImage | |||
| Dispatched when an input/output error occurs. | BitmapImage | |||
| Dispatched when content is loading. | BitmapImage | |||
| Dispatched when content loading is complete. | BitmapImage | |||
| Dispatched when a security error occurs. | BitmapImage | |||
bitmapData | proprietà |
bitmapData:BitmapData [sola lettura] | Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Returns a copy of the BitmapData object representing
the currently loaded image content (unscaled). This property
is null for untrusted cross domain content.
Il valore predefinito è null.
Implementazione
public function get bitmapData():BitmapDatabytesLoaded | proprietà |
bytesLoaded:Number [sola lettura] | Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
The number of bytes of the image already loaded. Only relevant for images loaded by request URL.
Il valore predefinito è NaN.
Implementazione
public function get bytesLoaded():NumberbytesTotal | proprietà |
bytesTotal:Number [sola lettura] | Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
The total image data in bytes loaded or pending load. Only relevant for images loaded by request URL.
Il valore predefinito è NaN.
Implementazione
public function get bytesTotal():NumberclearOnLoad | proprietà |
clearOnLoad:Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Denotes whether or not to clear previous image content prior to loading new content.
Il valore predefinito è true.
Implementazione
public function get clearOnLoad():Boolean public function set clearOnLoad(value:Boolean):voidcontentLoader | proprietà |
contentLoader:IContentLoader| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Optional custom image loader (e.g. image cache or queue) to associate with content loader client.
Il valore predefinito è null.
Implementazione
public function get contentLoader():IContentLoader public function set contentLoader(value:IContentLoader):voidcontentLoaderGrouping | proprietà |
contentLoaderGrouping:String| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Optional content grouping identifier to pass to the an associated IContentLoader instance's load() method. This property is only considered when a valid contentLoader is assigned.
Implementazione
public function get contentLoaderGrouping():String public function set contentLoaderGrouping(value:String):voidfillMode | proprietà |
fillMode:String| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Determines how the bitmap fills in the dimensions. If you set the value
of this property in a tag, use the string (such as "repeat"). If you set the value of
this property in ActionScript, use the constant (such as mx.graphics.BitmapFillMode.CLIP).
When set to BitmapFillMode.CLIP ("clip"), the bitmap
ends at the edge of the region.
When set to BitmapFillMode.REPEAT ("repeat"), the bitmap
repeats to fill the region.
When set to BitmapFillMode.SCALE ("scale"), the bitmap
stretches to fill the region.
Il valore predefinito è BitmapFillMode.SCALE.
Implementazione
public function get fillMode():String public function set fillMode(value:String):voidElementi API correlati
horizontalAlign | proprietà |
horizontalAlign:String| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The horizontal alignment of the content when it does not have
a one-to-one aspect ratio and scaleMode is set to
mx.graphics.BitmapScaleMode.LETTERBOX.
Can be one of HorizontalAlign.LEFT ("left"),
HorizontalAlign.RIGHT ("right"), or
HorizontalAlign.CENTER ("center").
This property is only applicable when fillMode is set to
to mx.graphics.BitmapFillMode.SCALE ("scale").
Il valore predefinito è HorizontalAlign.CENTER.
Implementazione
public function get horizontalAlign():String public function set horizontalAlign(value:String):voidElementi API correlati
preliminaryHeight | proprietà |
preliminaryHeight:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Provides an estimate to use for height when the "measured" bounds of the image is requested by layout, but the image data has yet to complete loading. When NaN the measured height is 0 until the image has finished loading.
Il valore predefinito è NaN.
Implementazione
public function get preliminaryHeight():Number public function set preliminaryHeight(value:Number):voidpreliminaryWidth | proprietà |
preliminaryWidth:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Provides an estimate to use for width when the "measured" bounds of the image is requested by layout, but the image data has yet to complete loading. When NaN the measured width is 0 until the image has finished loading.
Il valore predefinito è NaN.
Implementazione
public function get preliminaryWidth():Number public function set preliminaryWidth(value:Number):voidscaleMode | proprietà |
scaleMode:String| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10.1, AIR 2.0 |
Determines how the image is scaled when fillMode is set to
mx.graphics.BitmapFillMode.SCALE.
When set to mx.graphics.BitmapScaleMode.STRETCH ("stretch"),
the image is stretched to fit.
When set to BitmapScaleMode.LETTERBOX ("letterbox"),
the image is scaled with respect to the original unscaled image's
aspect ratio.
When set to BitmapScaleMode.ZOOM ("zoom"),
the image is scaled to fit with respect to the original unscaled image's
aspect ratio. This results in cropping on one axis.
Il valore predefinito è BitmapScaleMode.STRETCH.
Implementazione
public function get scaleMode():String public function set scaleMode(value:String):voidElementi API correlati
smooth | proprietà |
smooth:Boolean| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Specifica se applicare un algoritmo di smussatura all'immagine bitmap.
Se è false, il rendering delle immagini bitmap modificate in scala viene eseguito utilizzando un algoritmo "Nearest Neighbor" e risultano "pixelizzate". Se è true, il rendering delle immagini bitmap modificate in scala viene eseguito utilizzando un algoritmo bilineare. Il rendering con l'algoritmo "Nearest Neighbor" è generalmente più veloce.
Il valore predefinito è false.
Implementazione
public function get smooth():Boolean public function set smooth(value:Boolean):voidsmoothingQuality | proprietà |
smoothingQuality:String| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Determines how the image is down-scaled. When set to
BitmapSmoothingQuality.HIGH, the image is resampled (if data
is from a trusted source) to achieve a higher quality result.
If set to BitmapSmoothingQuality.DEFAULT, the default stage
quality for scaled bitmap fills is used.
Il valore predefinito è BitmapSmoothingQuality.DEFAULT.
Implementazione
public function get smoothingQuality():String public function set smoothingQuality(value:String):voidsource | proprietà |
source:Object| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The source used for the bitmap fill. The fill can render from various graphical sources, including the following:
- A Bitmap or BitmapData instance.
- A class representing a subclass of DisplayObject. The BitmapFill instantiates the class and creates a bitmap rendering of it.
- An instance of a DisplayObject. The BitmapFill copies it into a Bitmap for filling.
- The name of an external image file.
If you use an image file for the source, it can be of type PNG, GIF, or JPG.
To specify an embedded image source, you can use the @Embed directive, as the following example shows:
source="@Embed('<i>image_location</i>')"
The image location can be specified via a URL, URLRequest, or file reference. If it is a file reference, its location is relative to the location of the file that is being compiled.
The BitmapImage class is designed to work with embedded images or images that are loaded at run time.
If the source is a Bitmap or BitmapData instance or is an external image file, it is the responsibility of the caller to dispose of the source once it is no longer needed. If ImageLoader created the BitmapData instance, then it will dispose of the BitmapData once the source has changed.
Questa proprietà può essere utilizzata come origine per l’associazione di dati. Quando questa proprietà viene modificata, invia l’evento sourceChanged .
Implementazione
public function get source():Object public function set source(value:Object):voidElementi API correlati
sourceHeight | proprietà |
sourceWidth | proprietà |
trustedSource | proprietà |
trustedSource:Boolean [sola lettura] | Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 9, AIR 1.5 |
A read-only flag denoting whether the currently loaded
content is considered loaded form a source whose security
policy allows for cross domain image access.
When false, advanced bitmap operations such as high quality scaling,
and tiling are not permitted. This flag is set once an
image has been fully loaded.
Il valore predefinito è true.
Implementazione
public function get trustedSource():BooleanverticalAlign | proprietà |
verticalAlign:String| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
The vertical alignment of the content when it does not have
a one-to-one aspect ratio and scaleMode is set to
mx.graphics.BitmapScaleMode.LETTERBOX.
Can be one of VerticalAlign.TOP ("top"),
VerticalAlign.BOTTOM ("bottom"), or
VerticalAlign.MIDDLE ("middle").
This property is only applicable when scaleMode is set to
to BitmapFillMode.SCALE ("scale").
Il valore predefinito è VerticalAlign.MIDDLE.
Implementazione
public function get verticalAlign():String public function set verticalAlign(value:String):voidElementi API correlati
BitmapImage | () | Funzione di costruzione |
public function BitmapImage()| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Constructor.
commitProperties | () | metodo |
override protected function commitProperties():void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Processes the properties set on the element. This is an advanced method that you might override when creating a subclass.
You do not call this method directly.
Flex calls the commitProperties() method when you
use the addElement() method to add an element to an
IGraphicElementContainer container such as Group,
or when you call the invalidateProperties() method of the element.
Calls to the commitProperties() method occur before calls to the
measure() method. This lets you set property values that might
be used by the measure() method.
Some elements have properties that interact with each other. It is often best at startup time to process all of these properties at one time to avoid duplicating work.
measure | () | metodo |
override protected function measure():void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Calculates the default size of the element. This is an advanced method that you might override when creating a subclass of GraphicElement.
You do not call this method directly. Flex calls the
measure() method when the element is added to an
IGraphicElementContainer container such as Group
using the addElement() method, and when the element's
invalidateSize() method is called.
By default you set both explicit height and explicit width of an element,
Flex does not call the measure() method,
even if you explicitly call the invalidateSize() method.
To override this behavior, override skipMeasure() method.
In your override of this method, you must set the
measuredWidth and measuredHeight properties
to define the default size.
You can optionally set the measuredX and
measuredY properties to define the default measured bounds
top-left corner relative to the origin of the element.
The conceptual point of measure() is for the element to
provide its own natural or intrinsic bounds as a default. Therefore, the
measuredWidth and measuredHeight properties
should be determined by factors such as:
- The amount of text the component needs to display.
- The size of a JPEG image that the component displays.
In some cases, there is no intrinsic way to determine default values.
For example, a simple GreenCircle element might simply set
measuredWidth = 100 and measuredHeight = 100 in its measure() method to
provide a reasonable default size. In other cases, such as a TextArea,
an appropriate computation (such as finding the right width and height
that would just display all the text and have the aspect ratio of a Golden Rectangle)
might be too time-consuming to be worthwhile.
The default implementation of measure()
sets the values of the measuredWidth, measuredHeight,
measuredX, and measuredY properties
to 0.
updateDisplayList | () | metodo |
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 1.5 |
Draws the element and/or sizes and positions its content. This is an advanced method that you might override when creating a subclass of GraphicElement.
You do not call this method directly. Flex calls the
updateDisplayList() method when the component is added
to an IGraphicElementContainer container such as Group
using the addElement() method, and when the element's
invalidateDisplayList() method is called.
This method is where you would do programmatic drawing
using methods on the elements's displayObject
such as graphics.drawRect().
Parametri
unscaledWidth:Number — Specifies the width of the component, in pixels,
in the component's coordinates, regardless of the value of the
scaleX property of the component.
| |
unscaledHeight:Number — Specifies the height of the component, in pixels,
in the component's coordinates, regardless of the value of the
scaleY property of the component.
|
complete | Evento |
flash.events.Eventproprietà Event.type =
flash.events.Event.COMPLETE| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Dispatched when content loading is complete. This event is only dispatched for url and ByteArray based sources (those sources requiring a Loader).
Note that for content loaded via Loader, both
ready and complete events
are dispatched.
ready is dispatched.
La costante Event.COMPLETE definisce il valore della proprietà type di un oggetto evento complete.
Questo evento ha le seguenti proprietà:
| Proprietà | Valore |
|---|---|
bubbles | false |
cancelable | false; non è presente alcun comportamento predefinito da annullare. |
currentTarget | L'oggetto che elabora attivamente l'oggetto Event con un listener di eventi. |
target | L'oggetto di rete che ha completato il caricamento. |
httpStatus | Evento |
flash.events.HTTPStatusEventproprietà HTTPStatusEvent.type =
flash.events.HTTPStatusEvent.HTTP_STATUS| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Dispatched when a network request is made over HTTP and Flash Player or AIR can detect the HTTP status code.
La costanteHTTPStatusEvent.HTTP_STATUS definisce il valore della proprietà type di un oggetto evento httpStatus.
Questo evento ha le seguenti proprietà:
| Proprietà | Valore |
|---|---|
bubbles | false |
cancelable | false; non è presente alcun comportamento predefinito da annullare. |
currentTarget | L'oggetto che elabora attivamente l'oggetto Event con un listener di eventi. |
status | Il codice di stato HTTP restituito dal server. |
target | L'oggetto di rete che riceve un codice di stato HTTP. |
ioError | Evento |
flash.events.IOErrorEventproprietà IOErrorEvent.type =
flash.events.IOErrorEvent.IO_ERROR| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Dispatched when an input/output error occurs.
Definisce il valore della proprietàtype di un oggetto evento ioError.
Questo evento ha le seguenti proprietà:
| Proprietà | Valore |
|---|---|
bubbles | false |
cancelable | false; non è presente alcun comportamento predefinito da annullare. |
currentTarget | L'oggetto che elabora attivamente l'oggetto Event con un listener di eventi. |
errorID | Un numero di riferimento associato all'errore specifico (solo AIR). |
target | L'oggetto di rete interessato dall'errore di input/output. |
text | Testo da visualizzare come messaggio di errore. |
Elementi API correlati
progress | Evento |
flash.events.ProgressEventproprietà ProgressEvent.type =
flash.events.ProgressEvent.PROGRESS| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Dispatched when content is loading.
Note:
The progress event is not guaranteed to be dispatched.
The complete event may be received, without any
progress events being dispatched.
This can happen when the loaded content is a local file.
type di un oggetto evento progress.
Questo evento ha le seguenti proprietà:
| Proprietà | Valore |
|---|---|
bubbles | false |
bytesLoaded | Il numero di elementi o di byte caricati nel momento in cui il listener elabora l'evento. |
bytesTotal | Il numero totale di elementi o byte che vengono caricati se il processo di caricamento viene completato correttamente. |
cancelable | false; non è presente alcun comportamento predefinito da annullare. |
currentTarget | L'oggetto che elabora attivamente l'oggetto Event con un listener di eventi. |
target | L'oggetto che riporta l'avanzamento. |
ready | Evento |
mx.events.FlexEventproprietà FlexEvent.type =
mx.events.FlexEvent.READY| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Dispatched when content loading is complete. Unlike the
complete event, this event is dispatched for
all source types.
Note that for content loaded via Loader, both
ready and complete events
are dispatched.
ready is dispatched.
The FlexEvent.READY constant defines the value of the
type property of the event object for a ready
event. This event is dispatched by the BitmapImage and spark Image
classes to denote that the assigned image source has fully loaded.
The properties of the event object have the following values:
| Property | Value |
|---|---|
bubbles | false |
cancelable | false |
returnValue | null |
currentTarget | The Object that defines the
event listener that handles the event. For example, if you use
myImage.addEventListener() to register an event listener,
myImage is the value of the currentTarget. |
target | The Object that dispatched the event;
it is not always the Object listening for the event.
Use the currentTarget property to always access the
Object listening for the event. |
Type | FlexEvent.READY |
securityError | Evento |
flash.events.SecurityErrorEventproprietà SecurityErrorEvent.type =
flash.events.SecurityErrorEvent.SECURITY_ERROR| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4.5 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Dispatched when a security error occurs.
La costanteSecurityErrorEvent.SECURITY_ERROR definisce il valore della proprietà type di un oggetto evento securityError.
Questo evento ha le seguenti proprietà:
| Proprietà | Valore |
|---|---|
bubbles | false |
cancelable | false; non è presente alcun comportamento predefinito da annullare. |
currentTarget | L'oggetto che elabora attivamente l'oggetto Event con un listener di eventi. |
target | L'oggetto di rete che riporta l'errore di sicurezza. |
text | Testo da visualizzare come messaggio di errore. |
Elementi API correlati
<?xml version="1.0" encoding="utf-8"?>
<!-- BitmapGraphicExample.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark">
<s:Panel title="Bitmap Graphic Example"
width="75%" height="75%"
horizontalCenter="0" verticalCenter="0">
<s:Group left="10" right="10" top="10" bottom="10">
<!-- Single image, not resized, not repeated. -->
<s:Graphic x="0" y="0">
<s:BitmapImage id="bg1" source="@Embed('assets/AirIcon12x12.gif')" fillMode="clip"/>
</s:Graphic>
<!-- Single image, scaled to fit specified dimensions. -->
<s:Graphic x="150" y="0">
<s:BitmapImage id="bg2" source="@Embed('assets/AirIcon12x12.gif')" width="60" height="60" fillMode="scale"/>
</s:Graphic>
<!-- Repeated image to fit specified dimensions. -->
<s:Graphic x="300" y="0">
<s:BitmapImage id="bg3" source="@Embed('assets/AirIcon12x12.gif')" width="120" height="120" fillMode="repeat"/>
</s:Graphic>
</s:Group>
</s:Panel>
</s:Application>
Tue Jun 12 2018, 02:44 PM Z