IlvGanttPanZoomInteractor Class Reference

Interactor to pan and zoom the grapher views of the Gantt chart. More...

#include <ilviews/gantt/ganttint.h>

Inheritance diagram for IlvGanttPanZoomInteractor:

List of all members.

Public Member Functions
	IlvGanttPanZoomInteractor (IlvGanttChart *gantt, IlvManager *grapher, IlvView *view)
	Constructor.
IlvGanttChart *	getGanttChart ()
	Returns the associated Gantt chart.
void	setGanttChart (IlvGanttChart *gantt)
	Specifies the Gantt chart to be associated.
Protected Member Functions
virtual void	doTranslate (IlvPos dx, IlvPos dy, IlBoolean reDraw)
	Called by the handleEvent method in order to translate the view.
virtual void	doZoom (const IlvPoint &center, IlFloat scalex, IlBoolean reDraw)
	Called by the handleEvent method in order to zoom the view.

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Detailed Description

Interactor to pan and zoom the grapher views of the Gantt chart.

Library: ilvgantt

Install this interactor in the grapher views of the Gantt chart to pan and zoom. Use the left mouse button to vertically or horizontally pan the grapher views. Use the middle button or the mouse wheel to horizontally zoom the grapher views.

See also:

IlvGanttChart, IlvPanZoomInteractor.

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Constructor & Destructor Documentation

IlvGanttPanZoomInteractor::IlvGanttPanZoomInteractor	(	IlvGanttChart *	gantt,
		IlvManager *	grapher,
		IlvView *	view
	)

Constructor.

The constructor initializes an instance of the IlvGanttPanZoomInteractor class.

Parameters:

	gantt	The Gantt chart.
	grapher	The grapher of the Gantt chart.
	view	Specifies one of the grapher views of the Gantt chart.

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Member Function Documentation

virtual void IlvGanttPanZoomInteractor::doTranslate	(	IlvPos	dx,
		IlvPos	dy,
		IlBoolean	reDraw
	)			[protected, virtual]

Called by the handleEvent method in order to translate the view.

Parameters:

	dx	The x translation factor.
	dy	The y translation factor.
	reDraw	If IlTrue, the view must be redrawn.

Reimplemented from IlvPanZoomInteractor.

virtual void IlvGanttPanZoomInteractor::doZoom	(	const IlvPoint &	center,
		IlFloat	scalex,
		IlBoolean	reDraw
	)			[protected, virtual]

Called by the handleEvent method in order to zoom the view.

The default zooming factor used by the handleEvent is 1.5 for the zoom in operation and 1 / 1.5 for the zoom out. Note that the performed zoom keeps the aspect ratio (for example, scaley = scalex).

Parameters:

	center	The point that is left unchanged by the zoom operation. The default point used by the handleEvent method is the center of the view.
	scalex	The x zooming factor.
	reDraw	If IlTrue, the view must be redrawn.

Reimplemented from IlvPanZoomInteractor.

IlvGanttChart* IlvGanttPanZoomInteractor::getGanttChart

(

)

Returns the associated Gantt chart.

Returns:

The associated Gantt chart.

void IlvGanttPanZoomInteractor::setGanttChart

(

IlvGanttChart *

gantt

)

Specifies the Gantt chart to be associated.

Parameters:

gantt

The Gantt chart to be associated.