IlvPinEditorInteractor Class Reference

Grapher interactor for editing connection pins. More...

#include <ilviews/grapher/pinedit.h>

Inheritance diagram for IlvPinEditorInteractor:

Public Member Functions
	IlvPinEditorInteractor (IlvManager *mgr, IlvView *view)
	Constructor. More...
virtual IlUInt	doAddPin (const IlvPoint &p)
	Adds a new connection pin. More...
virtual void	doConnectPin (IlvGraphic *link, IlUInt pinIndex)
	Connects a pin to a link. More...
virtual void	doMovePin (IlUInt pinIndex, const IlvPoint &p)
	Changes the position of a connection pin. More...
virtual void	doRemovePin (IlUInt pinIndex)
	Removes a connection pin. More...
IlvGraphNodeSelection *	getNodeSelection () const
	Returns the selection object used to represent and edit connection pins. More...
IlvMakeSelection	setMakeNodeSelection (IlvMakeSelection mksel)
	Changes the way nodes are highlighted. More...
virtual void	validate (IlvPoint &p)
	Validates a mouse position. More...

Detailed Description

Grapher interactor for editing connection pins.

Library: ilvgrapher

This class lets the user edit the connection pins that can be associated to a grapher node. The interactor can carry out several actions. Each action is implemented by a method that can optionally be overloaded:

• Adding a connection pin (IlvPinEditorInteractor::doAddPin).
• Removing a connection pin (IlvPinEditorInteractor::doRemovePin)
• Moving an existing connection pin (IlvPinEditorInteractor::doMovePin). By keeping the Ctrl key pressed during the interaction, the new location of the pin will snap to the contour of the node.
• Connecting or disconnecting a link to and from a pin (IlvPinEditorInteractor::doConnectPin)

Warning

[note] Connection pins can be edited only if they are managed by an instance of IlvGenericPin or one of its subclasses.

See Also

IlvGrapherPin, IlvGenericPin, IlvGraphNodeSelection, IlvManagerViewInteractor.

Constructor & Destructor Documentation

IlvPinEditorInteractor::IlvPinEditorInteractor	(	IlvManager *	mgr,
		IlvView *	view
	)

Constructor.

The constructor initializes a new instance of the IlvPinEditorInteractor class for the view v and the grapher mgr.

Parameters

mgr	The grapher to which the interactor is attached.
v	The view to which the interactor is attached.

Member Function Documentation

virtual IlUInt IlvPinEditorInteractor::doAddPin ( const IlvPoint &  p )

virtual

Adds a new connection pin.

Parameters

p	The position of the new connection pin.

Returns

The index of the new connection pin.

See Also

getNodeSelection.

virtual void IlvPinEditorInteractor::doConnectPin ( IlvGraphic *  link, IlUInt  pinIndex  )

virtual

Connects a pin to a link.

Called to connect or disconnect link to and from the selected connection pin. If pinIndex is equal to IlvBadIndex, then link should be disconnected. Otherwise, it should be connected to the pin of index pinIdex.

Parameters

link	The link to connect or disconnect.
pinIndex	The index of the current connection pin, or IlvBadIndex if link should be disconnected.

See Also

getNodeSelection.

virtual void IlvPinEditorInteractor::doMovePin ( IlUInt  pinIndex, const IlvPoint &  p  )

virtual

Changes the position of a connection pin.

Called when the user releases the mouse button after dragging the connection pin of index pinIndex to the new location p.

Parameters

pinIndex	The index of the connection pin to be moved.
pinIndex	The new position of the connection pin.

See Also

getNodeSelection.

virtual void IlvPinEditorInteractor::doRemovePin ( IlUInt  pinIndex )

virtual

Removes a connection pin.

Called when the user presses the delete key to remove the selected connection pin. If this pin is the last one, the IlvGrapherPin instance is removed from the current node and deleted.

Parameters

pinIndex

The index of the connection pin to remove.

See Also

getNodeSelection.

IlvGraphNodeSelection* IlvPinEditorInteractor::getNodeSelection

(

)

const

Returns the selection object used to represent and edit connection pins.

An IlvGraphNodeSelection instance is associated with the grapher node currently being edited. The selection object lets you retrieve the selected connection pin with the IlvGraphNodeSelection::getActivePinIdx method.

Returns

The selection object used to represent and edit the connection pins.

IlvMakeSelection IlvPinEditorInteractor::setMakeNodeSelection

(

IlvMakeSelection

mksel

)

Changes the way nodes are highlighted.

Sets the factory that creates the selection objects used to highlight nodes during the interaction. If no factory is specified, an instance of IlvGraphNodeSelection is used.

Warning

The mksel factory must create objects that are subtype of the IlvGraphNodeSelection class.

Parameters

mksel

The new factory function.

Returns

The old factory function.

virtual void IlvPinEditorInteractor::validate ( IlvPoint &  p )

virtual

Validates a mouse position.

Called whenever the mouse is dragged. It lets you control the position taken by the point p, which will be used to edit the connection pins.

Parameters

p	The current position.