com.yworks.graph.drawing.AbstractStyleRenderer

	Property	Defined By
		item : IModelItem [read-only] Gets the currently configured item.	AbstractStyleRenderer
		style : IVisualStyle [read-only] Gets the currently configured style.	AbstractStyleRenderer
		styleDescriptor : ICanvasObjectDescriptor [read-only] Gets the ICanvasObjectDescriptor to use for new installations.	AbstractStyleRenderer

	Method	Defined By
		calculateBounds(scratch:IMutableRectangle, ctx:ICanvasContext):IRectangle Returns a tight rectangular area where the whole rendering would fit into.	AbstractStyleRenderer
		createDisplayObject(context:IDisplayObjectContext):DisplayObject Creates a new DisplayObject which represents the styled model item.	AbstractStyleRenderer
		getBoundsProvider(item:IModelItem, style:IVisualStyle):IBoundsProvider Configures the style and item parameters, calls configure and returns this.	AbstractStyleRenderer
		getContext(item:IModelItem, style:IVisualStyle):ILookup Configures the style and item parameters, does not call configure and returns this.	AbstractStyleRenderer
		getDisplayObjectCreator(item:IModelItem, style:IVisualStyle):IDisplayObjectCreator Configures the style and item parameters, calls configure and returns this.	AbstractStyleRenderer
		getHitTestable(item:IModelItem, style:IVisualStyle):IHitTestable Configures the style and item parameters, calls configure and returns this.	AbstractStyleRenderer
		getMarqueeTestable(item:IModelItem, style:IVisualStyle):IMarqueeTestable Configures the style and item parameters, calls configure and returns this.	AbstractStyleRenderer
		install(canvas:CanvasComponent, group:ICanvasObjectGroup, modelItem:IModelItem):Array Installs the model in the canvas at the given group using the styleDescriptor.	AbstractStyleRenderer
		isHit(x:Number, y:Number, ctx:ICanvasContext):Boolean Hit tests the item by trying to apply the flash internal hit testing.	AbstractStyleRenderer
		isInBox(box:IRectangle, ctx:ICanvasContext):Boolean Returns true if the corresponding item is considered to intersect the given rectangular box. This method may return false if the item cannot be selected using a selection marquee or optionally if the item is only partially contained within the box.	AbstractStyleRenderer
		isVisible(clip:IRectangle, ctx:ICanvasContext):Boolean Calls configure and tests the item using the style for a visible intersection with the clip bounds.	AbstractStyleRenderer
		lookup(type:Class):Object Implements the ILookup interface.	AbstractStyleRenderer
		updateDisplayObject(oldDisplayObject:DisplayObject, context:IDisplayObjectContext):DisplayObject Updates the given DisplayObject.	AbstractStyleRenderer

	Method	Defined By
		configure():void Prepares this instance for subsequent calls after the style and item have been initialized.	AbstractStyleRenderer
		createStyleDescriptor():ICanvasObjectDescriptor Factory method for the StyleDescriptor property.	AbstractStyleRenderer
		setItem(item:IModelItem):void Called by the various descriptor getters to initialize the item.	AbstractStyleRenderer
		setStyle(style:IVisualStyle):void Called by the various descriptor getters to initialize the style.	AbstractStyleRenderer

Property Detail

item

property

item:IModelItem [read-only]

Gets the currently configured item.

Implementation
public function get item():IModelItem

style

property

style:IVisualStyle [read-only]

Gets the currently configured style.

Implementation
public function get style():IVisualStyle

styleDescriptor

property

styleDescriptor:ICanvasObjectDescriptor [read-only]

Gets the ICanvasObjectDescriptor to use for new installations. If the field has not yet been initialized upon first access, the factory method createStyleDescriptor will be called.

Implementation
public function get styleDescriptor():ICanvasObjectDescriptor

Method Detail

calculateBounds

()

method

public function calculateBounds(scratch:IMutableRectangle, ctx:ICanvasContext):IRectangle

Returns a tight rectangular area where the whole rendering would fit into.

Implementations can use the scratch rectangle to put their results in and return it as the result of the operation. Client has to always provide a non-null instance as a parameter. They may however decide to return an internally cached or dynamically created IRectangle implementation and disregard the scratch parameter. If calculating the bounds is too expensive or the painting is not bound to a certain area, this method may return null. If nothing is painted, this method should return an empty rectangle, where either or both the width and height is non-positive or ImmutableRectangle.Empty.

Parameters

	`scratch:IMutableRectangle` — An instance that can optionally be used to fill with the corresponding values and be returned

	`ctx:ICanvasContext` — The context to calculate the bounds for (currently not used)

Returns

IRectangle — The bounds or null to indicate an unbound area

configure

()

method

protected function configure():void

Prepares this instance for subsequent calls after the style and item have been initialized.

Upon invocation the style and item fields have been populated by the getDisplayObjectCreator or getBoundsProvider methods.

createDisplayObject

()

method

public function createDisplayObject(context:IDisplayObjectContext):DisplayObject

Creates a new DisplayObject which represents the styled model item.

Subclasses have to override this method

Parameters

context:IDisplayObjectContext

Returns

DisplayObject

See also

updateDisplayObject

createStyleDescriptor

()

method

protected function createStyleDescriptor():ICanvasObjectDescriptor

Factory method for the StyleDescriptor property. This method will be called upon first access to the styleDescriptor property.

Returns

ICanvasObjectDescriptor — An ICanvasObjectDescriptor instance that will delegate to this instance's methods

getBoundsProvider

()

method

public function getBoundsProvider(item:IModelItem, style:IVisualStyle):IBoundsProvider

Configures the style and item parameters, calls configure and returns this.

Parameters

	`item:IModelItem` — The item to retrieve the bounds provider for. The value will be stored in the `item` field by `setItem`

	`style:IVisualStyle` — The style to associate with the item. The value will be stored in the `style` field by `setStyle`.

Returns

IBoundsProvider — this

getContext

()

method

public function getContext(item:IModelItem, style:IVisualStyle):ILookup

Configures the style and item parameters, does not call configure and returns this.

As this method may be called often it will not automatically call configure, instead subclasses should ensure that in the lookup method call they should call configure only if needed, i.e. if they decide to return this or an instance that depends on a correctly configured this.

Parameters

	`item:IModelItem` — The item to query the context for. The value will be stored in the `item` field by `setItem`.

	`style:IVisualStyle` — The style to associate with the item. The value will be stored in the `style` field by `setStyle`.

Returns

ILookup — this

getDisplayObjectCreator

()

method

public function getDisplayObjectCreator(item:IModelItem, style:IVisualStyle):IDisplayObjectCreator

Configures the style and item parameters, calls configure and returns this.

Parameters

	`item:IModelItem` — The item to retrieve the display object creator for. The value will be stored in the `item` field by `setItem`.

	`style:IVisualStyle` — The style to associate with the item. The value will be stored in the `style` field by `setStyle`.

Returns

IDisplayObjectCreator — this

getHitTestable

()

method

public function getHitTestable(item:IModelItem, style:IVisualStyle):IHitTestable

Configures the style and item parameters, calls configure and returns this.

Parameters

	`item:IModelItem` — The item to query hit test with. The value will be stored in the `item` field by `setItem`.

	`style:IVisualStyle` — The style to associate with the item. The value will be stored in the `style` field by `setStyle`.

Returns

IHitTestable — this

getMarqueeTestable

()

method

public function getMarqueeTestable(item:IModelItem, style:IVisualStyle):IMarqueeTestable

Configures the style and item parameters, calls configure and returns this.

Parameters

	`item:IModelItem` — The item to query for marquee intersection tests. The value will be stored in the `item` field by `setItem`.

	`style:IVisualStyle` — The style to associate with the item. The value will be stored in the `style` field by `setStyle`.

Returns

IMarqueeTestable — this

install

()

method

public function install(canvas:CanvasComponent, group:ICanvasObjectGroup, modelItem:IModelItem):Array

Installs the model in the canvas at the given group using the styleDescriptor.

Parameters

	`canvas:CanvasComponent`

	`group:ICanvasObjectGroup`

	`modelItem:IModelItem`

Returns

Array

isHit

()

method

public function isHit(x:Number, y:Number, ctx:ICanvasContext):Boolean

Hit tests the item by trying to apply the flash internal hit testing.

This implementation does not take ICanvasContext.hitTestRadius into account.

Parameters

	`x:Number`

	`y:Number`

	`ctx:ICanvasContext`

Returns

Boolean

isInBox

()

method

public function isInBox(box:IRectangle, ctx:ICanvasContext):Boolean

Returns true if the corresponding item is considered to intersect the given rectangular box. This method may return false if the item cannot be selected using a selection marquee or optionally if the item is only partially contained within the box.

Parameters

	`box:IRectangle` — The box describing the marquee's bounds

	`ctx:ICanvasContext` — The current canvas context

Returns

Boolean — true if the item is considered to be captured by the marquee

isVisible

()

method

public function isVisible(clip:IRectangle, ctx:ICanvasContext):Boolean

Calls configure and tests the item using the style for a visible intersection with the clip bounds.

This simple implementation uses calculateBounds to determine the visibility. Subclasses may choose to override this behavior for improved performance but need to make sure to call configure if they depend on a configured instance.

Parameters

	`clip:IRectangle` — The clip bounds

	`ctx:ICanvasContext` — The current canvas context

Returns

Boolean — true if the item may be painted within the clip bounds.

lookup

()

method

public function lookup(type:Class):Object

Implements the ILookup interface.

This method will be used by default if getContext has been queried for a lookup implementation. Note that it cannot be assumed that configure has already been invoked. However, normally item and style will be correctly configured if invoked directly after getContext. Subclass implementations should make sure to configure this instance before they return this as a result of a successful lookup.

Parameters

type:Class — The type to query for

Returns

Object — An implementation of the given type or null

setItem

()

method

protected function setItem(item:IModelItem):void

Called by the various descriptor getters to initialize the item.

Sets the item field to the given argument.

Parameters

item:IModelItem — The item to use for the subsequent calls

setStyle

()

method

protected function setStyle(style:IVisualStyle):void

Called by the various descriptor getters to initialize the style.

Sets the style field to the given argument.

Parameters

style:IVisualStyle — The style to use for the subsequent calls

updateDisplayObject

()

method

public function updateDisplayObject(oldDisplayObject:DisplayObject, context:IDisplayObjectContext):DisplayObject

Updates the given DisplayObject.

Parameters

	`oldDisplayObject:DisplayObject`

	`context:IDisplayObjectContext`

Returns

DisplayObject

yFiles FLEX 1.9 API Documentation	All Packages \| All Classes \| Index \| Frames No Frames
AbstractStyleRenderer	Properties \| Methods

Package	com.yworks.graph.drawing
Class	public class AbstractStyleRenderer
Inheritance	AbstractStyleRenderer Object
Implements	IStyleRenderer, IBoundsProvider, ILookup, IHitTestable, IMarqueeTestable, IVisibilityTest, IDisplayObjectCreator
Subclasses	AbstractEdgeStyleRenderer, AbstractLabelStyleRenderer, AbstractNodeStyleRenderer, DelegatingStyleRenderer, SimplePortStyleRenderer