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IVisualElement

Package | mx.core
Interface | public interface IVisualElement extends ILayoutElement, ILayoutDirectionElement, flash.events.IEventDispatcher
Implementors | GraphicElement, SpriteVisualElement, StyleableTextField, UIComponent

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The IVisualElement interface defines the minimum properties and methods required for a visual element to be laid out and displayed in a Spark container.

Public Properties
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| Property | Defined By
--- | --- | ---
|  | alpha : Number | IVisualElement
|  | baseline : Object The vertical distance in pixels from the anchor target to the control's baseline position. | ILayoutElement
|  | baselinePosition : Number [read-only] The y-coordinate of the baseline of the first line of text of the component. | ILayoutElement
|  | bottom : Object The vertical distance in pixels from the bottom edge of the component to the anchor target's bottom edge. | ILayoutElement
|  | depth : Number Determines the order in which items inside of containers are rendered. | IVisualElement
|  | designLayer : DesignLayer Specifies the optional DesignLayer instance associated with this visual element. | IVisualElement
|  | hasLayoutMatrix3D : Boolean [read-only] Contains true if the element has 3D Matrix. | ILayoutElement
|  | height : Number | IVisualElement
|  | horizontalCenter : Object The horizontal distance in pixels from the center of the component to the center of the anchor target's content area. | ILayoutElement
|  | includeInLayout : Boolean Specifies whether this component is included in the layout of the parent container. | ILayoutElement
|  | is3D : Boolean [read-only] Contains true when the element is in 3D. | IVisualElement
|  | 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). | ILayoutDirectionElement
|  | left : Object The horizontal distance in pixels from the left edge of the component to the anchor target's left edge. | ILayoutElement
|  | owner : DisplayObjectContainer The owner of this IVisualElement object. | IVisualElement
|  | parent : DisplayObjectContainer [read-only] The parent container or component for this component. | IVisualElement
|  | percentHeight : Number Specifies the height of a component as a percentage of its parent's size. | ILayoutElement
|  | percentWidth : Number Specifies the width of a component as a percentage of its parent's size. | ILayoutElement
|  | postLayoutTransformOffsets : 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. | IVisualElement
|  | right : Object The horizontal distance in pixels from the right edge of the component to the anchor target's right edge. | ILayoutElement
|  | top : Object The vertical distance in pixels from the top edge of the component to the anchor target's top edge. | ILayoutElement
|  | verticalCenter : Object The vertical distance in pixels from the center of the component to the center of the anchor target's content area. | ILayoutElement
|  | visible : Boolean Controls the visibility of this visual element. | IVisualElement
|  | width : Number | IVisualElement
|  | x : Number | IVisualElement
|  | y : Number | IVisualElement

Public Methods
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| Method | Defined By
--- | --- | ---
|  | getBoundsXAtSize(width:Number, height:Number, postLayoutTransform:Boolean = true):Number Returns the x coordinate of the element's bounds at the specified element size. | ILayoutElement
|  | getBoundsYAtSize(width:Number, height:Number, postLayoutTransform:Boolean = true):Number Returns the y coordinate of the element's bounds at the specified element size. | ILayoutElement
|  | getLayoutBoundsHeight(postLayoutTransform:Boolean = true):Number Returns the element's layout height. | ILayoutElement
|  | getLayoutBoundsWidth(postLayoutTransform:Boolean = true):Number Returns the element's layout width. | ILayoutElement
|  | getLayoutBoundsX(postLayoutTransform:Boolean = true):Number Returns the x coordinate that the element uses to draw on screen. | ILayoutElement
|  | getLayoutBoundsY(postLayoutTransform:Boolean = true):Number Returns the y coordinate that the element uses to draw on screen. | ILayoutElement
|  | getLayoutMatrix():Matrix Returns the transform matrix that is used to calculate the component's layout relative to its siblings. | ILayoutElement
|  | getLayoutMatrix3D():Matrix3D Returns the layout transform Matrix3D for this element. | ILayoutElement
|  | getMaxBoundsHeight(postLayoutTransform:Boolean = true):Number Returns the element's maximum height. | ILayoutElement
|  | getMaxBoundsWidth(postLayoutTransform:Boolean = true):Number Returns the element's maximum width. | ILayoutElement
|  | getMinBoundsHeight(postLayoutTransform:Boolean = true):Number Returns the element's minimum height. | ILayoutElement
|  | getMinBoundsWidth(postLayoutTransform:Boolean = true):Number Returns the element's minimum width. | ILayoutElement
|  | getPreferredBoundsHeight(postLayoutTransform:Boolean = true):Number Returns the element's preferred height. | ILayoutElement
|  | getPreferredBoundsWidth(postLayoutTransform:Boolean = true):Number Returns the element's preferred width. | ILayoutElement
|  | invalidateLayoutDirection():void An element must call this method when its layoutDirection changes or when its parent's layoutDirection changes. | ILayoutDirectionElement
|  | setLayoutBoundsPosition(x:Number, y:Number, postLayoutTransform:Boolean = true):void Sets the coordinates that the element uses to draw on screen. | ILayoutElement
|  | setLayoutBoundsSize(width:Number, height:Number, postLayoutTransform:Boolean = true):void Sets the layout size of the element. | ILayoutElement
|  | setLayoutMatrix(value:Matrix, invalidateLayout:Boolean):void Sets the transform Matrix that is used to calculate the component's layout size and position relative to its siblings. | ILayoutElement
|  | setLayoutMatrix3D(value:Matrix3D, invalidateLayout:Boolean):void Sets the transform Matrix3D that is used to calculate the component's layout size and position relative to its siblings. | ILayoutElement
|  | 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. | ILayoutElement

Property Detail

alpha | property

`alpha:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Implementation
`public function get alpha():Number`
`public function set alpha(value:Number):void`

depth | property |

`depth:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Determines the order in which items inside of containers are rendered. Spark containers order their items based on their `depth` property, with the lowest depth in the back, and the higher in the front. Items with the same depth value appear in the order they are added to the container.

The default value is `0`.

Implementation
`public function get depth():Number`
`public function set depth(value:Number):void`

designLayer | property |

`designLayer:DesignLayer`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Specifies the optional DesignLayer instance associated with this visual element.

When a DesignLayer is assigned, a visual element must consider the visibility and alpha of its parent layer when ultimately committing its own effective visibility or alpha to its backing DisplayObject (if applicable).

A visual element must listen for `layerPropertyChange` notifications from the associated layer parent. When the `effectiveAlpha` or `effectiveVisibility` of the layer changes, the element must then compute its own effective visibility (or alpha) and apply it accordingly.

This property should not be set within MXML directly.

The `designLayer` property is not used for z-order control, please see `depth`.

The default value is `null`.

Implementation
`public function get designLayer():DesignLayer`
`public function set designLayer(value:DesignLayer):void`

See also

depth

height | property |

`height:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Implementation
`public function get height():Number`
`public function set height(value:Number):void`

is3D | property |

`is3D:Boolean` [read-only]

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Contains `true` when the element is in 3D. The element can be in 3D either because it has 3D transform properties or it has 3D post layout transform offsets or both.

Implementation
`public function get is3D():Boolean`

See also

postLayoutTransformOffsets
mx.core.ILayoutElement.hasLayoutMatrix3D

owner | property |

`owner:DisplayObjectContainer`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The owner of this IVisualElement object. By default, it is the parent of this IVisualElement object. However, if this IVisualElement object is a child component that is popped up by its parent, such as the drop-down list of a ComboBox control, the owner is the component that popped up this IVisualElement object.

This property is not managed by Flex, but by each component. Therefore, if you use the `PopUpManger.createPopUp()` or `PopUpManger.addPopUp()` method to pop up a child component, you should set the `owner` property of the child component to the component that popped it up.

The default value is the value of the `parent` property.

Implementation
`public function get owner():DisplayObjectContainer`
`public function set owner(value:DisplayObjectContainer):void`

parent | property |

`parent:DisplayObjectContainer` [read-only]

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

The parent container or component for this component. Only visual elements should have a `parent` property. Non-visual items should use another property to reference the object to which they belong. By convention, non-visual objects use an `owner` property to reference the object to which they belong.

Implementation
`public function get parent():DisplayObjectContainer`

postLayoutTransformOffsets | property |

`postLayoutTransformOffsets:TransformOffsets`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

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.

For example, if you want a layout to adjust for an object that is rotated 90 degrees, set the object's `rotation` property. If you want the layout to not adjust for the object being rotated, set its `postLayoutTransformOffsets.rotationZ` property.

Implementation
`public function get postLayoutTransformOffsets():TransformOffsets`
`public function set postLayoutTransformOffsets(value:TransformOffsets):void`

visible | property |

`visible:Boolean`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Controls the visibility of this visual element. If `true`, the object is visible.

If an object is not visible, but the `includeInLayout` property is set to `true`, then the object takes up space in the container, but is invisible.

If `visible` is set to `true`, the object may not necessarily be visible due to its size and whether container clipping is enabled.

Setting `visible` to `false`, prevents the component from getting focus.

The default value is `true`.

Implementation
`public function get visible():Boolean`
`public function set visible(value:Boolean):void`

See also

ILayoutElement.includeInLayout

width | property |

`width:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Implementation
`public function get width():Number`
`public function set width(value:Number):void`

x | property |

`x:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Implementation
`public function get x():Number`
`public function set x(value:Number):void`

y | property |

`y:Number`

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

Implementation
`public function get y():Number`
`public function set y(value:Number):void`

Sun Mar 5 2017, 03:42 PM +11:00