IlvZoomScaleStepsUpdater Class Reference

Class for computing the graduations of a scale. More...

#include <ilviews/charts/scaledis.h>

Inheritance diagram for IlvZoomScaleStepsUpdater:

Public Member Functions
	IlvZoomScaleStepsUpdater (IlvSingleScaleDisplayer *scale)
	Constructor. More...
virtual char *	computeStepLabel (IlDouble value) const
	Computes and returns the label displayed for a given data value. More...
virtual void	getStepSubStepValues (const IlvProjectorArea &area, IlUInt &stepsCount, IlDouble *&stepValues, IlUInt &subStepsCount, IlDouble *&subStepValues) const
	Computes and returns the step and substep values for the associated scale. More...
Public Member Functions inherited from IlvScaleStepsUpdater
virtual IlBoolean	checkRange (IlvCoordInterval &range) const
	Checks whether an interval is valid with respect to the step definition. More...
IlvCoordinateInfo *	getCoordinateInfo () const
	Deprecated More...
IlvSingleScaleDisplayer *	getScale () const
	Returns the scale associated with the current scale steps updater. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvScaleStepsUpdater
static IlvScaleStepsUpdater *	Get (const IlvSingleScaleDisplayer *scale)
	Returns the scale steps updater set on a given scale. More...
static IlvScaleStepsUpdater *	Remove (IlvSingleScaleDisplayer *scale)
	Removes the scale steps updater set on a given scale. More...
static IlvScaleStepsUpdater *	Set (IlvSingleScaleDisplayer *scale, IlvScaleStepsUpdater *updater)
	Sets a scale steps updater on a given scale. More...
Protected Member Functions inherited from IlvScaleStepsUpdater
	IlvScaleStepsUpdater (IlvSingleScaleDisplayer *scale)
	Constructor. More...

Detailed Description

Class for computing the graduations of a scale.

Library: ilvcharts

IlvZoomScaleStepsUpdater is a subclass of IlvScaleStepsUpdater that allows you to display graduations that are zoomed locally on a part of the scale and that are displayed normally on the rest of the scale.

Warning

This class can be used to compute the steps for a given scale only if a transformer of the IlvZoomCoordinateTransformer type is also set on the coordinate represented by the scale.

See also

IlvScaleStepsUpdater, IlvSingleScaleDisplayer.

Constructor & Destructor Documentation

IlvZoomScaleStepsUpdater::IlvZoomScaleStepsUpdater

(

IlvSingleScaleDisplayer *

scale

)

Constructor.

Initializes a new IlvZoomScaleStepsUpdater object.

Parameters

scale

The scale associated with the current scale steps updater.

Member Function Documentation

virtual char* IlvZoomScaleStepsUpdater::computeStepLabel ( IlDouble  value ) const

virtual

Computes and returns the label displayed for a given data value.

Parameters

value

The data value for which the label to be displayed is computed.

Reimplemented from IlvScaleStepsUpdater.

virtual void IlvZoomScaleStepsUpdater::getStepSubStepValues ( const IlvProjectorArea &  area, IlUInt &  stepsCount, IlDouble *&  stepValues, IlUInt &  subStepsCount, IlDouble *&  subStepValues  ) const

virtual

Computes and returns the step and substep values for the associated scale.

Parameters

area	The data area definition. This data area definition can be retrieved with the IlvChartGraphic::getProjectorArea() method.
stepsCount	Returns the number of major steps.
stepValues	Returns the values associated with the major steps.
subStepsCount	Returns the number of minor steps.
subStepValues	Returns the values associated with the minor steps.

Implements IlvScaleStepsUpdater.