Package | mx.controls |
Class | public class Image |
Inheritance | Image ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Implements | IDataRenderer, IDropInListItemRenderer, IListItemRenderer |
Subclasses | PromoImage, TaskImage |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
![]() | Starting with Flex 4.5, Adobe recommends that you use the spark.components.Image class as an alternative to this class. |
The Image control lets you import JPEG, PNG, GIF, and SWF files at runtime. You can also embed any of these files and SVG files at compile time by using
@Embed(source='filename')
.
Note: Flex also includes the SWFLoader control for loading Flex applications. You typically use the Image control for loading static graphic files and SWF files, and use the SWFLoader control for loading Flex applications. The Image control is also designed to be used in custom item renderers and item editors.
Note: Flex also includes the BitmapImage class. This class is used for embedding images into skins and FXG components.
Embedded images load immediately, because they are already part of the Flex SWF file. However, they add to the size of your application and slow down the application initialization process. Embedded images also require you to recompile your applications whenever your image files change.
The alternative to embedding a resource is to load the resource at runtime. You can load a resource from the local file system in which the SWF file runs, or you can access a remote resource, typically though an HTTP request over a network. These images are independent of your Flex application, so you can change them without causing a recompile operation as long as the names of the modified images remain the same. The referenced images add no additional overhead to an application's initial loading time. However, you might experience a delay when you use the images and load them into Flash Player or AIR.
A SWF file can access one type of external resource only, either local or over a network;
it cannot access both types. You determine the type of access allowed by the SWF file
using the use-network
flag when you compile your application.
When the use-network
flag is set to false
, you can access
resources in the local file system, but not over the network.
The default value is true
, which allows you to access resources
over the network, but not in the local file system.
When you load images at runtime, you should be aware of the security restrictions of Flash Player or AIR. For example, in Flash Player you can load an image from any domain by using a URL, but the default security settings won't allow your code to access the bitmap data of the image unless it came from the same domain as the application. To access bitmap data from images on other servers, you must use a crossdomain.xml file.
The PNG and GIF formats also support the use of an alpha channel for creating transparent images.
When you use the Image control as a drop-in item renderer in a List control,
either set an explicit row height of the List control, by
using the rowHeight
property,
or set the variableRowHeight
property of the List control
to true
to size the row correctly.
If you find memory problems related to Images objects, try explicitly
setting the source
property to null when you are done using
the Image object in your application.

The <mx:Image>
tag inherits the tag attributes of its superclass,
and adds the following tag attribute:
<mx:Image Events dataChange="No default" />
Related API Elements
Property | Defined By | ||
---|---|---|---|
![]() | accessibilityImplementation : AccessibilityImplementation
The current accessibility implementation (AccessibilityImplementation)
for this InteractiveObject instance. | InteractiveObject | |
![]() | accessibilityProperties : AccessibilityProperties
The current accessibility options for this display object. | DisplayObject | |
![]() | alpha : Number
Indicates the alpha transparency value of the object specified. | DisplayObject | |
![]() | blendMode : String
A value from the BlendMode class that specifies which blend mode to use. | DisplayObject | |
![]() | blendShader : Shader [write-only]
Sets a shader that is used for blending the foreground and background. | DisplayObject | |
![]() | buttonMode : Boolean
Specifies the button mode of this sprite. | Sprite | |
![]() | cacheAsBitmap : Boolean
If set to true, Flash runtimes cache an internal bitmap representation of the
display object. | DisplayObject | |
![]() | cacheAsBitmapMatrix : Matrix
If non-null, this Matrix object defines how a display object is rendered when
cacheAsBitmap is set to true. | DisplayObject | |
![]() | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
![]() | contextMenu : NativeMenu
Specifies the context menu associated with this object. | InteractiveObject | |
![]() | dropTarget : DisplayObject [read-only]
Specifies the display object over which the sprite is being dragged, or on
which the sprite was dropped. | Sprite | |
![]() | filters : Array
An indexed array that contains each filter object currently associated with the display object. | DisplayObject | |
![]() | focusRect : Object
Specifies whether this object displays a focus rectangle. | InteractiveObject | |
![]() | graphics : Graphics [read-only]
Specifies the Graphics object that belongs to this sprite where vector
drawing commands can occur. | Sprite | |
![]() | hitArea : Sprite
Designates another sprite to serve as the hit area for a sprite. | Sprite | |
![]() | loaderInfo : LoaderInfo [read-only]
Returns a LoaderInfo object containing information about loading the file
to which this display object belongs. | DisplayObject | |
![]() | mask : DisplayObject
The calling display object is masked by the specified mask object. | DisplayObject | |
![]() | metaData : Object
Obtains the meta data object of the DisplayObject instance if meta data was stored alongside the
the instance of this DisplayObject in the SWF file through a PlaceObject4 tag. | DisplayObject | |
![]() | mouseChildren : Boolean
Determines whether or not the children of the object are mouse, or user input device, enabled. | DisplayObjectContainer | |
![]() | mouseEnabled : Boolean
Specifies whether this object receives mouse, or other user input, messages. | InteractiveObject | |
![]() | mouseX : Number [read-only]
Indicates the x coordinate of the mouse or user input device position, in pixels. | DisplayObject | |
![]() | mouseY : Number [read-only]
Indicates the y coordinate of the mouse or user input device position, in pixels. | DisplayObject | |
![]() | name : String
Indicates the instance name of the DisplayObject. | DisplayObject | |
![]() | needsSoftKeyboard : Boolean
Specifies whether a virtual keyboard (an on-screen, software keyboard) should display
when this InteractiveObject instance receives focus. | InteractiveObject | |
![]() | numChildren : int [read-only]
Returns the number of children of this object. | DisplayObjectContainer | |
![]() | opaqueBackground : Object
Specifies whether the display object is opaque with a certain background color. | DisplayObject | |
![]() | root : DisplayObject [read-only]
For a display object in a loaded SWF file, the root property is the
top-most display object in the portion of the display list's tree structure represented by that SWF file. | DisplayObject | |
![]() | scale9Grid : Rectangle
The current scaling grid that is in effect. | DisplayObject | |
![]() | scrollRect : Rectangle
The scroll rectangle bounds of the display object. | DisplayObject | |
![]() | softKeyboard : String
Controls the appearance of the soft keyboard. | InteractiveObject | |
![]() | softKeyboardInputAreaOfInterest : Rectangle
Defines the area that should remain on-screen when a soft keyboard is displayed (not available on iOS). | InteractiveObject | |
![]() | soundTransform : flash.media:SoundTransform
Controls sound within this sprite. | Sprite | |
![]() | stage : Stage [read-only]
The Stage of the display object. | DisplayObject | |
![]() | tabChildren : Boolean
Determines whether the children of the object are tab enabled. | DisplayObjectContainer | |
![]() | tabEnabled : Boolean
Specifies whether this object is in the tab order. | InteractiveObject | |
![]() | tabIndex : int
Specifies the tab ordering of objects in a SWF file. | InteractiveObject | |
![]() | textSnapshot : flash.text:TextSnapshot [read-only]
Returns a TextSnapshot object for this DisplayObjectContainer instance. | DisplayObjectContainer | |
![]() | useHandCursor : Boolean
A Boolean value that indicates whether the pointing hand (hand cursor) appears when the pointer rolls
over a sprite in which the buttonMode property is set to true. | Sprite |
Method | Defined By | ||
---|---|---|---|
![]() |
Adds a child DisplayObject instance to this DisplayObjectContainer instance. | DisplayObjectContainer | |
![]() |
Adds a child DisplayObject instance to this DisplayObjectContainer
instance. | DisplayObjectContainer | |
![]() | addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | |
![]() |
Indicates whether the security restrictions
would cause any display objects to be omitted from the list returned by calling
the DisplayObjectContainer.getObjectsUnderPoint() method
with the specified point point. | DisplayObjectContainer | |
![]() |
Determines whether the specified display object is a child of the DisplayObjectContainer instance or
the instance itself. | DisplayObjectContainer | |
![]() |
Returns a rectangle that defines the area of the display object relative to the coordinate system
of the targetCoordinateSpace object. | DisplayObject | |
![]() |
Returns the child display object instance that exists at the specified index. | DisplayObjectContainer | |
![]() |
Returns the child display object that exists with the specified name. | DisplayObjectContainer | |
![]() |
Returns the index position of a child DisplayObject instance. | DisplayObjectContainer | |
![]() |
Returns an array of objects that lie under the specified point and are children
(or grandchildren, and so on) of this DisplayObjectContainer instance. | DisplayObjectContainer | |
![]() |
Returns a rectangle that defines the boundary of the display object,
based on the coordinate system defined by the targetCoordinateSpace
parameter, excluding any strokes on shapes. | DisplayObject | |
![]() |
Converts the point object from the Stage (global) coordinates
to the display object's (local) coordinates. | DisplayObject | |
![]() |
Converts a two-dimensional point from the Stage (global) coordinates to a
three-dimensional display object's (local) coordinates. | DisplayObject | |
![]() |
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | |
![]() |
Indicates whether an object has a specified property defined. | Object | |
![]() |
Evaluates the bounding box of the display object to see if it overlaps or intersects with the
bounding box of the obj display object. | DisplayObject | |
![]() |
Evaluates the display object to see if it overlaps or intersects with the
point specified by the x and y parameters. | DisplayObject | |
![]() |
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
![]() |
Converts a three-dimensional point of the three-dimensional display
object's (local) coordinates to a two-dimensional point in the Stage (global) coordinates. | DisplayObject | |
![]() |
Converts the point object from the display object's (local) coordinates to the
Stage (global) coordinates. | DisplayObject | |
![]() |
Indicates whether the specified property exists and is enumerable. | Object | |
![]() |
Removes the specified child DisplayObject instance from the child list of the DisplayObjectContainer instance. | DisplayObjectContainer | |
![]() |
Removes a child DisplayObject from the specified index position in the child list of
the DisplayObjectContainer. | DisplayObjectContainer | |
![]() |
Removes all child DisplayObject instances from the child list of the DisplayObjectContainer instance. | DisplayObjectContainer | |
![]() |
Removes a listener from the EventDispatcher object. | EventDispatcher | |
![]() |
Raises a virtual keyboard. | InteractiveObject | |
![]() |
Changes the position of an existing child in the display object container. | DisplayObjectContainer | |
![]() |
Sets the availability of a dynamic property for loop operations. | Object | |
![]() |
Lets the user drag the specified sprite. | Sprite | |
![]() |
Lets the user drag the specified sprite on a touch-enabled device. | Sprite | |
![]() |
Recursively stops the timeline execution of all MovieClips rooted at this object. | DisplayObjectContainer | |
![]() |
Ends the startDrag() method. | Sprite | |
![]() |
Ends the startTouchDrag() method, for use with touch-enabled devices. | Sprite | |
![]() |
Swaps the z-order (front-to-back order) of the two specified child objects. | DisplayObjectContainer | |
![]() |
Swaps the z-order (front-to-back order) of the child objects at the two specified index positions in the
child list. | DisplayObjectContainer | |
![]() |
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
![]() |
Returns the primitive value of the specified object. | Object | |
![]() |
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher |
Event | Summary | Defined By | ||
---|---|---|---|---|
![]() | [broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active. | EventDispatcher | ||
![]() | Dispatched when a display object is added to the display list. | DisplayObject | ||
![]() | Dispatched when a display object is added to the on stage display list, either directly or through the addition of a sub tree in which the display object is contained. | DisplayObject | ||
![]() | Dispatched when the user selects 'Clear' (or 'Delete') from the text context menu. | InteractiveObject | ||
![]() | Dispatched when a user presses and releases the main button of the user's pointing device over the same InteractiveObject. | InteractiveObject | ||
![]() | Dispatched when a user gesture triggers the context menu associated with this interactive object in an AIR application. | InteractiveObject | ||
![]() | Dispatched when the user activates the platform-specific accelerator key combination for a copy operation or selects 'Copy' from the text context menu. | InteractiveObject | ||
![]() | Dispatched when the user activates the platform-specific accelerator key combination for a cut operation or selects 'Cut' from the text context menu. | InteractiveObject | ||
![]() | [broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive. | EventDispatcher | ||
![]() | Dispatched when a user presses and releases the main button of a pointing device twice in rapid succession over the same InteractiveObject when that object's doubleClickEnabled flag is set to true. | InteractiveObject | ||
![]() | [broadcast event] Dispatched when the playhead is entering a new frame. | DisplayObject | ||
![]() | [broadcast event] Dispatched when the playhead is exiting the current frame. | DisplayObject | ||
![]() | Dispatched after a display object gains focus. | InteractiveObject | ||
![]() | Dispatched after a display object loses focus. | InteractiveObject | ||
![]() | [broadcast event] Dispatched after the constructors of frame display objects have run but before frame scripts have run. | DisplayObject | ||
![]() | Dispatched when the user creates a point of contact along the edge of the touch surface with an InteractiveObject instance, (such as tapping along the edge of the touch surface on Siri Remote for Apple TV) Some devices might also interpret this contact as a combination of several touch events, as well. | InteractiveObject | ||
![]() | Dispatched when the user presses two points of contact over the same InteractiveObject instance on a touch-enabled device (such as presses and releases two fingers over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user moves a point of contact over the InteractiveObject instance on a touch-enabled device (such as moving a finger from left to right over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user performs a rotation gesture at a point of contact with an InteractiveObject instance (such as touching two fingers and rotating them over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user performs a swipe gesture at a point of contact with an InteractiveObject instance (such as touching three fingers to a screen and then moving them in parallel over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user creates a point of contact with an InteractiveObject instance, then taps on a touch-enabled device (such as placing several fingers over a display object to open a menu and then taps one finger to select a menu item on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user performs a zoom gesture at a point of contact with an InteractiveObject instance (such as touching two fingers to a screen and then quickly spreading the fingers apart over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | This event is dispatched to any client app that supports inline input with an IME | InteractiveObject | ||
![]() | Dispatched when the user presses a key. | InteractiveObject | ||
![]() | Dispatched when the user attempts to change focus by using keyboard navigation. | InteractiveObject | ||
![]() | Dispatched when the user releases a key. | InteractiveObject | ||
![]() | Dispatched when a user presses and releases the middle button of the user's pointing device over the same InteractiveObject. | InteractiveObject | ||
![]() | Dispatched when a user presses the middle pointing device button over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when a user presses the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when the user attempts to change focus by using a pointer device. | InteractiveObject | ||
![]() | Dispatched when a user moves the pointing device while it is over an InteractiveObject. | InteractiveObject | ||
![]() | Dispatched when the user moves a pointing device away from an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when the user moves a pointing device over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when a mouse wheel is spun over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched by the drag initiator InteractiveObject when the user releases the drag gesture. | InteractiveObject | ||
![]() | Dispatched by the target InteractiveObject when a dragged object is dropped on it and the drop has been accepted with a call to DragManager.acceptDragDrop(). | InteractiveObject | ||
![]() | Dispatched by an InteractiveObject when a drag gesture enters its boundary. | InteractiveObject | ||
![]() | Dispatched by an InteractiveObject when a drag gesture leaves its boundary. | InteractiveObject | ||
![]() | Dispatched by an InteractiveObject continually while a drag gesture remains within its boundary. | InteractiveObject | ||
![]() | Dispatched at the beginning of a drag operation by the InteractiveObject that is specified as the drag initiator in the DragManager.doDrag() call. | InteractiveObject | ||
![]() | Dispatched during a drag operation by the InteractiveObject that is specified as the drag initiator in the DragManager.doDrag() call. | InteractiveObject | ||
![]() | Dispatched when the user activates the platform-specific accelerator key combination for a paste operation or selects 'Paste' from the text context menu. | InteractiveObject | ||
![]() | Dispatched when the user lowers an active stylus past the proximity detection threshold of the screen. | InteractiveObject | ||
![]() | Dispatched when the user lifts an active stylus above the proximity detection threshold of the screen. | InteractiveObject | ||
![]() | Dispatched when the user moves an active stylus over the screen while remaining within the proximity detection threshold. | InteractiveObject | ||
![]() | Dispatched when the user moves an active stylus away from this InteractiveObject while remaining within the proximity detection threshold of the screen. | InteractiveObject | ||
![]() | Dispatched when the user moves an active stylus directly above this InteractiveObject while remaining within the proximity detection threshold of the screen. | InteractiveObject | ||
![]() | Dispatched when the user moves an active stylus away from this InteractiveObject and any of its children while remaining within the proximity detection threshold of the screen. | InteractiveObject | ||
![]() | Dispatched when the user moves an active stylus over this InteractiveObject from outside the object's tree of descendents in the display list (while remaining within the proximity detection threshold of the screen). | InteractiveObject | ||
![]() | Dispatched when a user releases the button on the pointing device after the user first pressed the button over an InteractiveObject instance and then moved the pointing device off of the InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when a display object is about to be removed from the display list. | DisplayObject | ||
![]() | Dispatched when a display object is about to be removed from the display list, either directly or through the removal of a sub tree in which the display object is contained. | DisplayObject | ||
![]() | [broadcast event] Dispatched when the display list is about to be updated and rendered. | DisplayObject | ||
![]() | Dispatched when a user presses and releases the right button of the user's pointing device over the same InteractiveObject. | InteractiveObject | ||
![]() | Dispatched when a user presses the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when a user releases the pointing device button over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when the user moves a pointing device away from an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when the user moves a pointing device over an InteractiveObject instance. | InteractiveObject | ||
![]() | Dispatched when the user activates the platform-specific accelerator key combination for a select all operation or selects 'Select All' from the text context menu. | InteractiveObject | ||
![]() | Dispatched immediately after the soft keyboard is raised. | InteractiveObject | ||
![]() | Dispatched immediately before the soft keyboard is raised. | InteractiveObject | ||
![]() | Dispatched immediately after the soft keyboard is lowered. | InteractiveObject | ||
![]() | Dispatched when the value of the object's tabChildren flag changes. | InteractiveObject | ||
![]() | Dispatched when the object's tabEnabled flag changes. | InteractiveObject | ||
![]() | Dispatched when the value of the object's tabIndex property changes. | InteractiveObject | ||
![]() | Dispatched when a user enters one or more characters of text. | InteractiveObject | ||
![]() | Dispatched when the user first contacts a touch-enabled device (such as touches a finger to a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user removes contact with a touch-enabled device (such as lifts a finger off a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user touches the device, and is continuously dispatched until the point of contact is removed. | InteractiveObject | ||
![]() | Dispatched when the user moves the point of contact away from InteractiveObject instance on a touch-enabled device (such as drags a finger from one display object to another on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user moves the point of contact over an InteractiveObject instance on a touch-enabled device (such as drags a finger from a point outside a display object to a point over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user moves the point of contact away from an InteractiveObject instance on a touch-enabled device (such as drags a finger from over a display object to a point outside the display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user moves the point of contact over an InteractiveObject instance on a touch-enabled device (such as drags a finger from a point outside a display object to a point over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject | ||
![]() | Dispatched when the user lifts the point of contact over the same InteractiveObject instance on which the contact was initiated on a touch-enabled device (such as presses and releases a finger from a single point over a display object on a mobile phone or tablet with a touch screen). | InteractiveObject |
Styles are either common or associated with a specific theme. If the style is common, it can be used with any theme. If a style is associated with a specific theme, it can only be used if your application uses that theme.
<?xml version="1.0" encoding="utf-8"?> <!-- Simple example to demonstrate the Halo Image control. --> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <s:Panel id="myPanel" title="Halo Image Control Example" width="75%" height="75%" horizontalCenter="0" verticalCenter="0"> <s:VGroup left="10" right="10" top="10" bottom="10"> <s:Label color="blue" text="Image embedded in the application."/> <mx:Image source="@Embed('assets/Nokia_6630.png')"/> </s:VGroup> </s:Panel> </s:Application>
Wed Nov 21 2018, 06:34 AM -08:00