IlvChartPanInteractor Class Reference

Associates scrolling with mouse movements. More...

#include <ilviews/charts/chartint.h>

Inheritance diagram for IlvChartPanInteractor:

Public Member Functions
	IlvChartPanInteractor (IlUShort whichButton=IlvRightButton)
	Constructor. More...
virtual IlBoolean	handleEvent (IlvGraphic *chart, IlvEvent &ev, const IlvTransformer *t=0)
	Handles events received by the interactor. More...
Public Member Functions inherited from IlvChartInteractor
virtual void	endSequence (IlvChartGraphic *chart, const IlvEvent &event, const IlvTransformer *t)
	Performs the actions needed when an interactor leaves an event sequence. More...
IlBoolean	isShared () const
	Indicates whether the current object is a shared instance. More...
virtual IlBoolean	isShowingAbscissaCursor () const
	Indicates whether the interactor uses a cursor on the abscissa. More...
virtual IlBoolean	isShowingOrdinateCursor () const
	Indicates whether the interactor uses a cursor on the ordinate. More...
virtual void	startSequence (IlvChartGraphic *chart, const IlvEvent &event, const IlvTransformer *t)
	Performs the actions needed when an interactor enters an event sequence. More...

Protected Member Functions
virtual void	doIt (IlvChartGraphic *chart, const IlvPoint &from, const IlvPoint &to)
	Action method to perform the scrolling. More...
Protected Member Functions inherited from IlvChartInteractor
	IlvChartInteractor ()
	Constructor. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvChartInteractor
static IlvChartInteractor *	Get (const char *name)
	Returns a shared interactor instance. More...

Detailed Description

Associates scrolling with mouse movements.

Library: ilvcharts

This class allows the user to scroll through the charts by dragging the mouse in any direction.

The registered name of this interactor class is "ChartPan".

Constructor & Destructor Documentation

IlvChartPanInteractor()

IlvChartPanInteractor::IlvChartPanInteractor

(

IlUShort

whichButton = IlvRightButton

)

Constructor.

Initializes a new IlvChartPanInteractor object.

Parameters

whichButton

The mouse button that should be used for the interaction.

Member Function Documentation

doIt()

virtual void IlvChartPanInteractor::doIt ( IlvChartGraphic *  chart, const IlvPoint &  from, const IlvPoint &  to  )

protectedvirtual

Action method to perform the scrolling.

This method is called whenever the mouse is dragged to a new position. The positions before and after the movement are used to compute the corresponding translation.

Parameters

chart	The considered chart.
from	The point in view coordinates before the mouse motion.
to	The point in view coordinates after the mouse motion.

handleEvent()

virtual IlBoolean IlvChartPanInteractor::handleEvent ( IlvGraphic *  chart, IlvEvent &  event, const IlvTransformer *  t = 0  )

virtual

Handles events received by the interactor.

This method is the entry point of all events dispatched to this interactor.

Parameters

chart	The chart object that received the event.
event	The received event.
t	The transformer applied to the view in which the event occurred.

Returns

IlTrue if the event was successfully handled and IlFalse otherwise.

Implements IlvChartInteractor.