IlvChartPanInteractor Class Reference

Associates scrolling with mouse movements. More...

#include <ilviews/charts/chartint.h>

Inheritance diagram for IlvChartPanInteractor:

List of all members.

Public Member Functions
	IlvChartPanInteractor (IlUShort whichButton=IlvRightButton)
	Constructor.
virtual IlBoolean	handleEvent (IlvGraphic *chart, IlvEvent &ev, const IlvTransformer *t=0)
	Handles events received by the interactor.
Protected Member Functions
virtual void	doIt (IlvChartGraphic *chart, const IlvPoint &from, const IlvPoint &to)
	Action method to perform the scrolling.

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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".

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Constructor & Destructor Documentation

IlvChartPanInteractor::IlvChartPanInteractor

(

IlUShort

whichButton = IlvRightButton

)

Constructor.

Initializes a new IlvChartPanInteractor object.

Parameters:

whichButton

The mouse button that should be used for the interaction.

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Member Function Documentation

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

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.

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.