Base class for standard scales. More...

#include <ilviews/charts/scaledis.h>

Inheritance diagram for IlvSingleScaleDisplayer:

Public Member Functions
virtual	~IlvSingleScaleDisplayer ()
	Destructor. More...

void	addCursor (IlvAbstractChartCursor *cursor, IlUInt position=IlvLastPositionIndex)
	Adds a cursor to the scale. More...

IlBoolean	areMajorTicksVisible () const
	Indicates whether the major ticks are visible. More...

IlBoolean	areMinorTicksVisible () const
	Indicates whether the minor ticks are visible. More...

IlBoolean	areStepLabelsVisible () const
	Indicates whether the step labels are visible. More...

virtual char *	computeStepLabel (IlDouble value) const
	Computes and returns the label associated with a data value. More...

virtual IlvAbstractChartCursor *	createCursor (const IlvSingleScaleDisplayer *scaleRef=0) const =0
	Factory method to create a default cursor. More...

virtual IlvAbstractGridDisplayer *	createGridDisplayer (const IlvSingleScaleDisplayer *scaleRef=0) const =0
	Factory method to create a default grid. More...

virtual void	drawLabelOnCrossings (IlBoolean b)
	Indicates whether the labels should be drawn where the axes intersect. More...

virtual void	drawOverlappingLabels (IlBoolean b)
	Sets whether overlapping labels are allowed. More...

IlvDim	getArrowLength () const
	Returns the arrow length. More...

IlvDim	getArrowWidth () const
	Returns the arrow width. More...

const char *	getAxisLabel () const
	Returns the label of the axis. More...

IlvDim	getAxisLabelOffset () const
	Returns the offset between the scale axis and its label. More...

IlvPalette *	getAxisLabelPalette () const
	Returns the palette used to draw the axis label. More...

void	getAxisLabelSizes (IlvDim &width, IlvDim &height, IlvDim &descent) const
	Returns the sizes of the axis label. More...

IlvPalette *	getAxisPalette () const
	Returns the palette used to draw the axis. More...

IlvConstantScaleStepsUpdater *	getConstantStepsUpdater () const
	Returns the constant scale steps updater (if any) used by the current scale. More...

virtual IlvCoordinateInfo *	getCoordinateInfo (IlUInt index=0) const
	Deprecated More...

virtual IlvCoordinateType	getCoordinateType () const
	Returns the type of the coordinate represented by the current scale. More...

IlvAbstractChartCursor *	getCursor (IlUInt index) const
	Returns the cursor at a given index. More...

IlvAbstractChartCursor *	getCursorByName (const char *name) const
	Returns a cursor with a given name. More...

IlUInt	getCursorsCount () const
	Returns the number of cursors connected to the scale. More...

IlvAbstractGridDisplayer *	getGridDisplayer () const
	Deprecated Returns the associated grid. More...

LabelLayout	getLabelLayout () const
	Returns the label layout on the scale axis. More...

IlvDim	getMajorTickSize () const
	Returns the size of the major ticks. More...

IlvDim	getMinorTickSize () const
	Returns the size of the minor ticks. More...

IlvDim	getOffset () const
	Returns the offset between the steps and the step labels. More...

const char *	getStepLabel (IlUInt iStep) const
	Returns the label of a given step. More...

IlDouble	getStepLabelAngle () const
	Returns the angle of the step labels. More...

void	getStepLabelBBox (const IlvProjectorArea &dataArea, IlUInt iStep, IlvRect &bbox) const
	Returns the bounding box of a step label. More...

const char *	getStepLabelFormat () const
	Returns the format used to draw the step labels. More...

const char const	getStepLabels (IlUInt &labelsCount) const
	Returns the labels of the major steps. More...

IlUInt	getStepLabelsCount () const
	Returns the number of step labels. More...

void	getStepLabelSizes (IlUInt iStep, IlvDim &width, IlvDim &height, IlvDim &descent) const
	Returns the sizes of a given step label. More...

IlvPalette *	getStepLabelsPalette () const
	Returns the palette used to draw the step labels. More...

IlUInt	getStepsCount () const
	Returns the number of major steps. More...

void	getStepSubStepValues (IlUInt &stepsCount, const IlDouble &stepValues, const char const &stepLabels, IlUInt &subStepsCount, const IlDouble &subStepValues) const
	Returns the values and labels associated with the scale steps. More...

IlvScaleStepsUpdater *	getStepsUpdater () const
	Returns the scale steps updater used by the current scale. More...

IlDouble	getStepUnit () const
	Returns the step unit. More...

IlDouble	getStepValue (IlUInt iStep) const
	Returns the value associated with a major step. More...

const IlDouble *	getStepValues (IlUInt &count) const
	Returns the values associated with the major steps. More...

IlUInt	getSubStepsCount () const
	Returns the number of minor steps between two major steps. More...

IlDouble	getSubStepUnit () const
	Returns the substep unit. More...

IlDouble	getSubStepValue (IlUInt iSubStep) const
	Returns the value associated with a minor step. More...

const IlDouble *	getSubStepValues (IlUInt &count) const
	Returns the values associated with the minor steps. More...

TickLayout	getTickLayout () const
	Returns the tick layout on the scale axis. More...

IlUInt	getTotalSubStepsCount () const
	Returns the total number of minor steps. More...

IlvValueToLabelCB	getValueToLabelCB () const
	Returns the conversion callback between data values and step labels. More...

IlAny	getValueToLabelCBData () const
	Returns the information parameter associated with the conversion callback between data values and step labels. More...

IlBoolean	hasCursor (const IlvAbstractChartCursor *cursor) const
	Checks whether a given cursor is connected to the scale. More...

IlBoolean	isAxisOriented () const
	Indicates whether the axis is oriented. More...

IlBoolean	isAxisVisible () const
	Indicates whether the axis is visible. More...

IlBoolean	isDrawingLabelOnCrossings () const
	Sets whether the step labels are drawn where the axes intersect. More...

IlBoolean	isDrawingOverlappingLabels () const
	Indicates whether overlapping labels should be drawn. More...

virtual IlBoolean	isOnAbscissa () const
	Indicates whether the scale is connected to the abscissa coordinate system. More...

virtual IlBoolean	isOnOrdinate () const
	Indicates whether the scale is connected to an ordinate coordinate system. More...

IlvAbstractChartCursor *	removeCursor (IlvAbstractChartCursor *cursor)
	Removes a cursor from the scale. More...

void	removeCursors ()
	Removes and deletes all the associated cursors.

virtual void	setArrowLength (IlvDim length)
	Sets the arrow length. More...

virtual void	setArrowWidth (IlvDim width)
	Sets the arrow width. More...

void	setAxisLabel (const char *label)
	Sets the label of the axis. More...

virtual void	setAxisLabelOffset (IlvDim offset)
	Sets the offset between the scale axis and its label. More...

virtual void	setAxisLabelPalette (IlvPalette *pal)
	Sets the palette used to draw the axis label. More...

virtual void	setAxisOriented (IlBoolean o)
	Indicates whether the scale should be oriented. More...

virtual void	setAxisPalette (IlvPalette *pal)
	Sets the palette used to draw the axis. More...

void	setAxisVisible (IlBoolean visible)
	Sets the visibility of the axis. More...

void	setGridDisplayer (IlvAbstractGridDisplayer *grid)
	Deprecated Sets the associated grid. More...

virtual void	setGridDrawOrder (IlvDrawOrder drawOrder)
	Sets the drawing order for the associated grid. More...

virtual void	setLabelZoomFactor (IlDouble scale)
	Set the scaling (zooming) factor to be applied on labels.

virtual void	setMajorTickSize (IlvDim val)
	Sets the size of the major ticks. More...

void	setMajorTicksVisible (IlBoolean visible)
	Sets the visibility of the major ticks. More...

virtual void	setMinorTickSize (IlvDim val)
	Sets the size of the minor ticks. More...

void	setMinorTicksVisible (IlBoolean visible)
	Sets the visibility of the minor ticks. More...

virtual void	setOffset (IlvDim dim)
	Sets the offset between the ticks and the step labels. More...

virtual void	setStepLabel (IlUInt labelIndex, const char *label)
	Sets the label for a given step by hand. More...

virtual void	setStepLabelAngle (IlDouble angle)
	Sets the angle of the step labels. More...

virtual void	setStepLabelFormat (const char *format, IlBoolean invalidate=IlTrue)
	Sets the format used to translate data values into step labels. More...

virtual void	setStepLabels (IlUInt count, const char const labels=0)
	Sets the step labels by hand. More...

virtual void	setStepLabelsPalette (IlvPalette *pal)
	Sets the palette used to draw the step labels. More...

void	setStepLabelsVisible (IlBoolean visible)
	Sets the visibility of the step labels. More...

virtual void	setTickLayout (TickLayout layout)
	Sets the tick layout on the scale axis. More...

virtual void	setValueToLabelCB (IlvValueToLabelCB cb, IlAny cbData=0)
	Sets a conversion callback between data values and step labels. More...

virtual void	write (IlvOutputFile &) const
	Writes the attributes of the current object in a file. More...

Public Member Functions inherited from IlvAbstractScaleDisplayer
virtual	~IlvAbstractScaleDisplayer ()
	Destructor. More...

virtual IlvAbstractScaleDisplayer *	copy () const =0
	Virtual copy constructor. More...

IlBoolean	getCrossingValue (IlDouble &dataValue) const
	Returns the data value to which the scale is actually fixed. More...

IlvDrawOrder	getDrawOrder () const
	Returns the drawing order for the current scale. More...

IlvCoordinateInfo *	getInfoForCrossingValue () const
	Returns the coordinate information used to position the scale. More...

const char *	getName () const
	Returns the name of the scale. More...

IlBoolean	getRelativePosition (IlvAxisPosition &relPos, IlvPos &offset) const
	Returns the relative position to which the scale is fixed. More...

IlDouble	getStoredCrossingValue () const
	Returns the stored value to which the scale is fixed. More...

IlBoolean	isAlwaysVisible () const
	Indicates whether the current scale must always appear on the screen. More...

IlBoolean	isFixedToPosition () const
	Indicates whether the scale is fixed to a position. More...

IlBoolean	isInVisibleDataArea () const
	Indicates whether the scale is in the visible data area. More...

IlBoolean	isVisible () const
	Indicates whether the scale is visible. More...

IlvOutputFile &	save (IlvOutputFile &file) const
	Writes a complete description of the current object in a file. More...

virtual void	setAlwaysVisible (IlBoolean b)
	Specifies whether the current scale must always appear on the screen. More...

virtual IlBoolean	setCrossingValue (IlDouble dataValue, const IlvSingleScaleDisplayer *ref)
	Sets the data value to which this scale is fixed. More...

virtual void	setDrawOrder (IlvDrawOrder drawOrder)
	Sets the drawing order for the current scale. More...

virtual void	setLabelLayout (LabelLayout layout)=0
	Sets the label layout on the scale axis. More...

void	setName (const char *name)
	Sets the name of the scale. More...

virtual void	setRelativePosition (IlvAxisPosition relPos, IlvPos offset=0)
	Sets the position to which this scale is fixed. More...

void	setVisible (IlBoolean visible)
	Sets the visibility of the scale. More...

Protected Member Functions
	IlvSingleScaleDisplayer (IlvCoordinateInfo coordInfo, IlvPalette defaultPalette)
	Constructor. More...

	IlvSingleScaleDisplayer (IlvCoordinateInfo coordInfo, IlUInt nbSteps, const char const stepLabels, IlUInt nbSubStepsBetween, IlvPalette defaultPalette)
	Constructor. More...

	IlvSingleScaleDisplayer (const IlvSingleScaleDisplayer &src)
	Constructor. More...

	IlvSingleScaleDisplayer (IlvInputFile &file)
	Constructor. More...

IlDouble	getStepDataMax () const
	Returns the data value associated with the last step of the scale. More...

IlDouble	getStepDataMin () const
	Returns the data value associated with the first step of the scale. More...

Protected Member Functions inherited from IlvAbstractScaleDisplayer
	IlvAbstractScaleDisplayer ()
	Constructor. More...

	IlvAbstractScaleDisplayer (const IlvAbstractScaleDisplayer &scaleDisplayer)
	Constructor. More...

	IlvAbstractScaleDisplayer (IlvInputFile &file)
	Constructor. More...

Friends
class	IlvAbstractChartCursor

class	IlvConstantScaleStepsUpdater

class	IlvScaleStepsUpdater

Additional Inherited Members
Public Types inherited from IlvAbstractScaleDisplayer
enum	LabelLayout { LabelInside, LabelOutside }
	This enumeration type defines the label layout on the scale axis. More...

enum	TickLayout { TickInside, TickOutside, TickCross }
	This enumeration type defines the tick layout on the scale axis. More...

Static Public Member Functions inherited from IlvAbstractScaleDisplayer
static IlvAbstractScaleDisplayer *	Load (IlvInputFile &file)
	Reads a scale object from a file. More...

Detailed Description

Base class for standard scales.

Library: ilvcharts

This class is the base class for single scales, that is, scales connected to a single coordinate system.

The computation of the steps and the substeps is performed by a dedicated object that is an instance of a subclass of the IlvScaleStepsUpdater class.

See Also: IlvAbstractScaleDisplayer, IlvRectangularScaleDisplayer, IlvCircularScaleDisplayer, IlvScaleStepsUpdater.

Constructor & Destructor Documentation

virtual IlvSingleScaleDisplayer::~IlvSingleScaleDisplayer ( )

virtual

Destructor.

The destructor performs the following steps:

It unlocks the associated coordinate information.
It deletes the step labels.
It unlocks the used palettes.
It deletes the associated grid if there is one.
It deletes the associated cursors.

IlvSingleScaleDisplayer::IlvSingleScaleDisplayer	(	IlvCoordinateInfo *	coordInfo,
		IlvPalette *	defaultPalette
	)

protected

Constructor.

Initializes a new IlvSingleScaleDisplayer object. An instance of the IlvAutoScaleStepsUpdater class is set on the created scale. Thus the steps, the substeps, and the step labels will be automatically computed.

Parameters

coordInfo	The coordinate information to which the scale is connected.
defaultPalette	The default palette used to draw the various parts of the scale (axis, step labels, axis label). Each individual part can be assigned a different palette afterwards.

IlvSingleScaleDisplayer::IlvSingleScaleDisplayer	(	IlvCoordinateInfo *	coordInfo,
		IlUInt	nbSteps,
		const char const	stepLabels,
		IlUInt	nbSubStepsBetween,
		IlvPalette *	defaultPalette
	)

protected

Constructor.

Initializes a new IlvSingleScaleDisplayer object. This constructor allows you to set by hand the step labels to be displayed. An instance of the IlvConstantScaleStepsUpdater class is set on the created scale.

Parameters

coordInfo	The coordinate information to which the scale is connected.
nbSteps	The number of major steps.
stepLabels	The labels of the major steps.
nbSubStepsBetween	The number of minor steps between two major steps.
defaultPalette	The default palette used to draw the various parts of the scale (axis, step labels, axis label). Each individual part can be assigned a different palette afterwards.

See Also: setStepLabels().

IlvSingleScaleDisplayer::IlvSingleScaleDisplayer ( const IlvSingleScaleDisplayer & src )

protected

Constructor.

Initializes a new IlvSingleScaleDisplayer object as a copy of src.

Parameters

src	The object used to initialize the current one.

IlvSingleScaleDisplayer::IlvSingleScaleDisplayer ( IlvInputFile & file )

protected

Constructor.

Initializes a new IlvSingleScaleDisplayer object from the description read in the input file named file.

Parameters

file	The file used to initialize the current scale displayer.

Member Function Documentation

void IlvSingleScaleDisplayer::addCursor	(	IlvAbstractChartCursor *	cursor,
		IlUInt	position = `IlvLastPositionIndex`
	)

Adds a cursor to the scale.

Parameters

cursor	The cursor to add.
position	The insertion rank of the cursor in the cursor list.

IlBoolean IlvSingleScaleDisplayer::areMajorTicksVisible ( ) const

Indicates whether the major ticks are visible.

Returns: IlTrue if the major ticks are visible and IlFalse otherwise.

IlBoolean IlvSingleScaleDisplayer::areMinorTicksVisible ( ) const

Indicates whether the minor ticks are visible.

Returns: IlTrue if the minor ticks are visible and IlFalse otherwise.

IlBoolean IlvSingleScaleDisplayer::areStepLabelsVisible ( ) const

Indicates whether the step labels are visible.

Returns: IlTrue if the step labels are visible and IlFalse otherwise.

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

virtual

Computes and returns the label associated with a data value.

This method is called to create the label corresponding to a coordinate value. If a scale steps updater is defined, this method simply calls the IlvScaleStepsUpdater::computeStepLabel() on the defined scale steps updater. Otherwise, it checks whether a conversion callback is defined. If such a function does not exist, the step label format is used to compute the label.

Parameters

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

Returns: The associated label. This label must be a valid C string allocated on the heap with the new operator.

See Also: setValueToLabelCB(), setStepLabelFormat().

virtual IlvAbstractChartCursor* IlvSingleScaleDisplayer::createCursor ( const IlvSingleScaleDisplayer * scaleRef = 0 ) const

pure virtual

Factory method to create a default cursor.

This method must return a cursor that can be connected to the current scale.

For example, the cursors that can be connected to a rectangular scale (instance of IlvRectangularScaleDisplayer) are instances of the IlvRectangularChartCursor class or of the IlvCircularChartCursor class. Similarly, the cursors that can be connected to a circular scale (instance of IlvCircularScaleDisplayer) are only instances of the IlvRadialChartCursor class.

Parameters

scaleRef The scale that can be used as a reference for the created cursor to know where the cursor line must stop.

Returns: The default cursor instance.

Note: The reference scale is used by default only for circular cursors.

Implemented in IlvCircularScaleDisplayer, and IlvRectangularScaleDisplayer.

virtual IlvAbstractGridDisplayer* IlvSingleScaleDisplayer::createGridDisplayer ( const IlvSingleScaleDisplayer * scaleRef = 0 ) const

pure virtual

Factory method to create a default grid.

This method must return a grid that can be associated with the current scale.

For example, the grids that can be associated with a rectangular scale (instance of IlvRectangularScaleDisplayer) are instances of the IlvRectangularGridDisplayer class or of the IlvCircularGridDisplayer class. Similarly, the grids that can be associated with a circular scale (instance of IlvCircularScaleDisplayer) are only instances of the IlvRadialGridDisplayer class.

Parameters

scaleRef The scale that can be used as a reference for the created grid to indicate where the grid lines must stop.

Returns: The default grid instance.

Note: The reference scale is used by default only for circular grids.

Implemented in IlvCircularScaleDisplayer, and IlvRectangularScaleDisplayer.

virtual void IlvSingleScaleDisplayer::drawLabelOnCrossings ( IlBoolean b )

virtual

Indicates whether the labels should be drawn where the axes intersect.

Parameters

b	The new value of the Boolean indicating whether the labels should be drawn where the axes intersect. This Boolean is equal`<code/code>` if the labels should be drawn where the axes intersect and `IlFalse` otherwise.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::drawOverlappingLabels ( IlBoolean b )

virtual

Sets whether overlapping labels are allowed.

If labels are not allowed to overlap (b is equal to IlFalse), the IlvSingleScaleDisplayer::getNumberOfSkippedSteps() method will be called to compute the number of steps to skip when drawing the labels.

Parameters

b	The new value of the Boolean indicating whether the labels can be overlapped. This Boolean is equal to `IlTrue` if overlapping labels are allowed and `IlFalse` otherwise.

Implements IlvAbstractScaleDisplayer.

IlvDim IlvSingleScaleDisplayer::getArrowLength ( ) const

Returns the arrow length.

Returns: The arrow length.

See Also: IlvAbstractScaleDisplayer::setArrowLength().

IlvDim IlvSingleScaleDisplayer::getArrowWidth ( ) const

Returns the arrow width.

Returns: The arrow width.

See Also: IlvAbstractScaleDisplayer::setArrowWidth().

const char* IlvSingleScaleDisplayer::getAxisLabel ( ) const

Returns the label of the axis.

Returns: The label of the axis.

IlvDim IlvSingleScaleDisplayer::getAxisLabelOffset ( ) const

Returns the offset between the scale axis and its label.

Returns: The offset between the scale axis and its label.

See Also: IlvAbstractScaleDisplayer::setAxisLabelOffset().

IlvPalette* IlvSingleScaleDisplayer::getAxisLabelPalette ( ) const

Returns the palette used to draw the axis label.

Returns: A pointer to the palette used to draw the axis label.

See Also: IlvAbstractScaleDisplayer::setAxisLabelPalette().

void IlvSingleScaleDisplayer::getAxisLabelSizes	(	IlvDim &	width,
		IlvDim &	height,
		IlvDim &	descent
	)		const

Returns the sizes of the axis label.

Parameters

width	Returns the width of the label.
height	Returns the height of the label.
descent	Returns the descent of the label.

IlvPalette* IlvSingleScaleDisplayer::getAxisPalette ( ) const

Returns the palette used to draw the axis.

Returns: A pointer to the palette used to draw the axis.

See Also: IlvAbstractScaleDisplayer::setAxisPalette().

IlvConstantScaleStepsUpdater* IlvSingleScaleDisplayer::getConstantStepsUpdater ( ) const

Returns the constant scale steps updater (if any) used by the current scale.

Returns: A pointer to the constant scale steps updater used by the current scale to compute the steps and the substeps if the current scale uses a constant scale steps updater. Returns 0 otherwise.

virtual IlvCoordinateInfo* IlvSingleScaleDisplayer::getCoordinateInfo ( IlUInt index = 0 ) const

virtual

Deprecated

See Also: IlvChartGraphic::getOrdinateInfo, IlvChartGraphic::getAbscissaInfo

Implements IlvAbstractScaleDisplayer.

virtual IlvCoordinateType IlvSingleScaleDisplayer::getCoordinateType ( ) const

virtual

Returns the type of the coordinate represented by the current scale.

Returns: IlvAbscissaCoordinate if the coordinate represented by the current scale is the abscissa coordinate and IlvOrdinateCoordinate if the coordinate represented by the current scale is an ordinate coordinate.

Implements IlvAbstractScaleDisplayer.

IlvAbstractChartCursor* IlvSingleScaleDisplayer::getCursor ( IlUInt index ) const

Returns the cursor at a given index.

Parameters

index The index of the cursor.

Returns: The corresponding cursor or 0 if the index is invalid.

IlvAbstractChartCursor* IlvSingleScaleDisplayer::getCursorByName ( const char * name ) const

Returns a cursor with a given name.

Returns the cursor handled by this scale whose name matches the name parameter.

Parameters

name	The name of the cursor.

Returns: The corresponding cursor or 0 if none was found.

IlUInt IlvSingleScaleDisplayer::getCursorsCount ( ) const

Returns the number of cursors connected to the scale.

Returns: The number of cursors connected to the scale.

IlvAbstractGridDisplayer* IlvSingleScaleDisplayer::getGridDisplayer ( ) const

Deprecated Returns the associated grid.

Returns: A pointer to the associated grid if it exists and 0 otherwise.

See Also: IlvChartGraphic::getAbscissaGrid(); IlvChartGraphic::getOrdinateGrid()

LabelLayout IlvSingleScaleDisplayer::getLabelLayout ( ) const

Returns the label layout on the scale axis.

Returns: The label layout on the scale axis.

See Also: IlvAbstractScaleDisplayer::setLabelLayout().

IlvDim IlvSingleScaleDisplayer::getMajorTickSize ( ) const

Returns the size of the major ticks.

Returns: The size of the major ticks.

See Also: IlvAbstractScaleDisplayer::setMajorTickSize().

IlvDim IlvSingleScaleDisplayer::getMinorTickSize ( ) const

Returns the size of the minor ticks.

Returns: The size of the minor ticks.

See Also: IlvAbstractScaleDisplayer::setMinorTickSize().

IlvDim IlvSingleScaleDisplayer::getOffset ( ) const

Returns the offset between the steps and the step labels.

Returns: The offset between the steps and the step labels.

See Also: IlvAbstractScaleDisplayer::setOffset().

IlDouble IlvSingleScaleDisplayer::getStepDataMax ( ) const

protected

Returns the data value associated with the last step of the scale.

Returns: The data value associated with the last step of the scale.

IlDouble IlvSingleScaleDisplayer::getStepDataMin ( ) const

protected

Returns the data value associated with the first step of the scale.

Returns: The data value associated with the first step of the scale.

const char* IlvSingleScaleDisplayer::getStepLabel ( IlUInt iStep ) const

Returns the label of a given step.

Parameters

iStep The index of the considered step.

Returns: The label of the step.

IlDouble IlvSingleScaleDisplayer::getStepLabelAngle ( ) const

Returns the angle of the step labels.

Returns: The angle of the step labels.

See Also: IlvAbstractScaleDisplayer::setStepLabelAngle().

void IlvSingleScaleDisplayer::getStepLabelBBox	(	const IlvProjectorArea &	dataArea,
		IlUInt	iStep,
		IlvRect &	bbox
	)		const

Returns the bounding box of a step label.

This method computes the bounding box of a step label from a given data area definition. This data area definition can be retrieved with the IlvChartGraphic::getProjectorArea() method.

Parameters

dataArea	The data area definition.
iStep	The index of the step.
bbox	Returns the computed bounding box.

const char* IlvSingleScaleDisplayer::getStepLabelFormat ( ) const

Returns the format used to draw the step labels.

Returns: The format used to draw the step labels.

See Also: IlvAbstractScaleDisplayer::setStepLabelFormat().

const char* const* IlvSingleScaleDisplayer::getStepLabels ( IlUInt & labelsCount ) const

Returns the labels of the major steps.

Parameters

labelsCount Returns the number of labels.

Returns: The labels of the major steps.

Note: The returned array must not be modified or deleted since it is internally maintained.

IlUInt IlvSingleScaleDisplayer::getStepLabelsCount ( ) const

Returns the number of step labels.

Returns: The number of step labels.

void IlvSingleScaleDisplayer::getStepLabelSizes	(	IlUInt	iStep,
		IlvDim &	width,
		IlvDim &	height,
		IlvDim &	descent
	)		const

Returns the sizes of a given step label.

Parameters

iStep	The index of the considered step.
width	Returns the width of the label.
height	Returns the height of the label.
descent	Returns the descent of the label.

IlvPalette* IlvSingleScaleDisplayer::getStepLabelsPalette ( ) const

Returns the palette used to draw the step labels.

Returns: A pointer to the palette used to draw the step labels.

See Also: IlvAbstractScaleDisplayer::setStepLabelsPalette().

IlUInt IlvSingleScaleDisplayer::getStepsCount ( ) const

Returns the number of major steps.

Returns: The number of major steps.

void IlvSingleScaleDisplayer::getStepSubStepValues	(	IlUInt &	stepsCount,
		const IlDouble *&	stepValues,
		const char const &	stepLabels,
		IlUInt &	subStepsCount,
		const IlDouble *&	subStepValues
	)		const

Returns the values and labels associated with the scale steps.

Parameters

stepsCount	Returns the number of major steps.
stepValues	Returns the values associated with the major steps.
stepLabels	Returns the labels of the major steps.
subStepsCount	Returns the number of minor steps.
subStepValues	Returns the values associated with the minor steps.

Warning: The returned arrays must not be modified or deleted since they are internally maintained.

IlvScaleStepsUpdater* IlvSingleScaleDisplayer::getStepsUpdater ( ) const

Returns the scale steps updater used by the current scale.

Returns: A pointer to the scale steps updater used by the current scale to compute the steps and substeps.

IlDouble IlvSingleScaleDisplayer::getStepUnit ( ) const

Returns the step unit.

Returns: The step unit.

Note: This value is meaningless if the associated coordinate uses a nonlinear transformer (for example, a logarithmic transformer).

IlDouble IlvSingleScaleDisplayer::getStepValue ( IlUInt iStep ) const

Returns the value associated with a major step.

Parameters

iStep The index of the considered major step.

Returns: The associated value.

const IlDouble* IlvSingleScaleDisplayer::getStepValues ( IlUInt & count ) const

Returns the values associated with the major steps.

Parameters

count Returns the number of major steps.

Returns: The values associated with the major steps.

Warning: The returned array must not be modified or deleted.

IlUInt IlvSingleScaleDisplayer::getSubStepsCount ( ) const

Returns the number of minor steps between two major steps.

Returns: The number of minor steps between two major steps.

IlDouble IlvSingleScaleDisplayer::getSubStepUnit ( ) const

Returns the substep unit.

Returns: The substep unit.

Note: This value is meaningless if the associated coordinate uses a nonlinear transformer (for example, a logarithmic transformer).

IlDouble IlvSingleScaleDisplayer::getSubStepValue ( IlUInt iSubStep ) const

Returns the value associated with a minor step.

Parameters

iSubStep The index of the considered minor step.

Returns: The associated value.

const IlDouble* IlvSingleScaleDisplayer::getSubStepValues ( IlUInt & count ) const

Returns the values associated with the minor steps.

Parameters

count Returns the number of minor steps.

Returns: The values associated with the minor steps.

Warning: The returned array must not be modified or deleted.

TickLayout IlvSingleScaleDisplayer::getTickLayout ( ) const

Returns the tick layout on the scale axis.

Returns: The tick layout on the scale axis.

See Also: IlvAbstractScaleDisplayer::setTickLayout().

IlUInt IlvSingleScaleDisplayer::getTotalSubStepsCount ( ) const

Returns the total number of minor steps.

Returns: The total number of minor steps.

IlvValueToLabelCB IlvSingleScaleDisplayer::getValueToLabelCB ( ) const

Returns the conversion callback between data values and step labels.

Returns: The conversion callback between data values and step labels.

See Also: IlvAbstractScaleDisplayer::setValueToLabelCB().

IlAny IlvSingleScaleDisplayer::getValueToLabelCBData ( ) const

Returns the information parameter associated with the conversion callback between data values and step labels.

Returns: The information parameter.

See Also: IlvAbstractScaleDisplayer::setValueToLabelCB().

IlBoolean IlvSingleScaleDisplayer::hasCursor ( const IlvAbstractChartCursor * cursor ) const

Checks whether a given cursor is connected to the scale.

Parameters

cursor The considered cursor.

Returns: IlTrue if the cursor cursor is connected to the scale and IlFalse otherwise.

IlBoolean IlvSingleScaleDisplayer::isAxisOriented ( ) const

Indicates whether the axis is oriented.

Returns: IlTrue if the scale axis is oriented and IlFalse otherwise.

See Also: IlvAbstractScaleDisplayer::setAxisOriented().

IlBoolean IlvSingleScaleDisplayer::isAxisVisible ( ) const

Indicates whether the axis is visible.

Returns: IlTrue if the axis is visible and IlFalse otherwise.

IlBoolean IlvSingleScaleDisplayer::isDrawingLabelOnCrossings ( ) const

Sets whether the step labels are drawn where the axes intersect.

Returns: IlTrue if the labels are drawn where the axes intersect and IlFalse otherwise.

See Also: IlvAbstractScaleDisplayer::drawLabelOnCrossings().

IlBoolean IlvSingleScaleDisplayer::isDrawingOverlappingLabels ( ) const

Indicates whether overlapping labels should be drawn.

Returns: IlTrue if overlapping labels are drawn and IlFalse otherwise.

See Also: IlvAbstractScaleDisplayer::drawOverlappingLabels().

virtual IlBoolean IlvSingleScaleDisplayer::isOnAbscissa ( ) const

virtual

Indicates whether the scale is connected to the abscissa coordinate system.

Returns: IlTrue if the scale represents the abscissa coordinate and IlFalse if it represents an ordinate coordinate.

Implements IlvAbstractScaleDisplayer.

virtual IlBoolean IlvSingleScaleDisplayer::isOnOrdinate ( ) const

virtual

Indicates whether the scale is connected to an ordinate coordinate system.

Returns: IlTrue if the scale represents an ordinate coordinate and IlFalse if it represents the abscissa coordinate.

Implements IlvAbstractScaleDisplayer.

IlvAbstractChartCursor* IlvSingleScaleDisplayer::removeCursor ( IlvAbstractChartCursor * cursor )

Removes a cursor from the scale.

The cursor is not deleted. Rather, the removed instance is returned and can be kept for future use.

Parameters

cursor The cursor to remove.

Returns: The removed cursor if this cursor was found and 0 otherwise.

virtual void IlvSingleScaleDisplayer::setArrowLength ( IlvDim length )

virtual

Sets the arrow length.

Parameters

length The new length of the arrow.

See Also: setAxisOriented().

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setArrowWidth ( IlvDim width )

virtual

Sets the arrow width.

Parameters

width The new width of the arrow.

See Also: setAxisOriented().

Implements IlvAbstractScaleDisplayer.

void IlvSingleScaleDisplayer::setAxisLabel ( const char * label )

Sets the label of the axis.

Parameters

label The new label. The new string is copied and the previous one is freed.

virtual void IlvSingleScaleDisplayer::setAxisLabelOffset ( IlvDim offset )

virtual

Sets the offset between the scale axis and its label.

Parameters

offset The new offset between the scale axis and its label.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setAxisLabelPalette ( IlvPalette * pal )

virtual

Sets the palette used to draw the axis label.

This method locks the new palette and unlocks the previous one.

Parameters

pal	The new palette.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setAxisOriented ( IlBoolean oriented )

virtual

Indicates whether the scale should be oriented.

An oriented scale is drawn with an arrow at the end.

Parameters

oriented The new value of the Boolean indicating whether the scale should be oriented.

See Also: setArrowWidth(), setArrowLength().

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setAxisPalette ( IlvPalette * pal )

virtual

Sets the palette used to draw the axis.

This method locks the new palette and unlocks the previous one.

Parameters

pal	The new palette.

Implements IlvAbstractScaleDisplayer.

void IlvSingleScaleDisplayer::setAxisVisible ( IlBoolean visible )

Sets the visibility of the axis.

Parameters

visible The new value of the Boolean indicating whether the axis should be visible (IlTrue) or hidden (IlFalse).

void IlvSingleScaleDisplayer::setGridDisplayer ( IlvAbstractGridDisplayer * grid )

Deprecated Sets the associated grid.

This method deletes the previous grid if it exists.

Parameters

grid	The new grid.

See Also: IlvChartGraphic::setAbscissaGrid(); IlvChartGraphic::setOrdinateGrid()

virtual void IlvSingleScaleDisplayer::setGridDrawOrder ( IlvDrawOrder drawOrder )

virtual

Sets the drawing order for the associated grid.

The drawing order enables the grid to be drawn either above (IlvDrawAbove) or below (IlvDrawBelow) other graphical representations. The grid and the scale can have different drawing orders. If no associated grid is defined, this method has no effect.

Parameters

drawOrder The new drawing order for the associated grid.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setMajorTickSize ( IlvDim size )

virtual

Sets the size of the major ticks.

Parameters

size	The new size of the major ticks.

Implements IlvAbstractScaleDisplayer.

void IlvSingleScaleDisplayer::setMajorTicksVisible ( IlBoolean visible )

Sets the visibility of the major ticks.

Parameters

visible The new value of the Boolean indicating whether major ticks should be visible (IlTrue) or hidden (IlFalse).

virtual void IlvSingleScaleDisplayer::setMinorTickSize ( IlvDim size )

virtual

Sets the size of the minor ticks.

Parameters

size	The new size of the minor ticks.

Implements IlvAbstractScaleDisplayer.

void IlvSingleScaleDisplayer::setMinorTicksVisible ( IlBoolean visible )

Sets the visibility of the minor ticks.

Parameters

visible The new value of the Boolean indicating whether minor ticks should be visible (IlTrue) or hidden (IlFalse).

virtual void IlvSingleScaleDisplayer::setOffset ( IlvDim dim )

virtual

Sets the offset between the ticks and the step labels.

Parameters

dim	The new offset between the ticks and the step labels.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setStepLabel	(	IlUInt	labelIndex,
		const char *	label
	)

virtual

Sets the label for a given step by hand.

Parameters

labelIndex	The step index. If the index is invalid, the method does nothing.
label	The new label for the step. This label is copied before being set and the old one is freed.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setStepLabelAngle ( IlDouble angle )

virtual

Sets the angle of the step labels.

Parameters

angle The new angle of the step labels.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setStepLabelFormat	(	const char *	format,
		IlBoolean	invalidate = `IlTrue`
	)

virtual

Sets the format used to translate data values into step labels.

Parameters

format	The new format. The format parameter is copied and follows the same convention as the string formats used by the C primitives, such as `printf()`.
invalidate	Indicates whether the layout of the scale should be recomputed.

Note: The format is used in the IlvSingleScaleDisplayer::computeStepLabel() method.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setStepLabels	(	IlUInt	count,
		const char const	labels = `0`
	)

virtual

Sets the step labels by hand.

The step labels can either be computed from their associated data values or manually specified by this method. The number of steps drawn by the scale is modified to match the count parameter.

Parameters

count	The number of labels.
labels	The new labels. Each label of this array is copied before being set. Each label previously defined is freed.

See Also: computeStepLabel().

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setStepLabelsPalette ( IlvPalette * pal )

virtual

Sets the palette used to draw the step labels.

This method locks the new palette and unlocks the previous one.

Parameters

pal	The new palette.

Implements IlvAbstractScaleDisplayer.

void IlvSingleScaleDisplayer::setStepLabelsVisible ( IlBoolean visible )

Sets the visibility of the step labels.

Parameters

visible The new value of the Boolean indicating whether step labels should be visible (IlTrue) or hidden (IlFalse).

virtual void IlvSingleScaleDisplayer::setTickLayout ( TickLayout layout )

virtual

Sets the tick layout on the scale axis.

This layout applies to both major and minor ticks. The actual result on the screen depends on the projector used and on the position of the axis.

Parameters

layout The new layout of the ticks.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::setValueToLabelCB	(	IlvValueToLabelCB	cb,
		IlAny	cbData = `0`
	)

virtual

Sets a conversion callback between data values and step labels.

This method lets you specify a function that gives for a data value associated with a step the actual label that will be displayed for this step. The conversion callback is used by the IlvSingleScaleDisplayer::computeStepLabel() method.

Parameters

cb	The conversion callback.
cbData	An optional parameter used to pass additional information to the callback.

Implements IlvAbstractScaleDisplayer.

virtual void IlvSingleScaleDisplayer::write ( IlvOutputFile & file ) const

virtual

Writes the attributes of the current object in a file.

Called by the IlvAbstractScaleDisplayer::save() method. This method can be overloaded in subclasses that define new attributes. The information written by the write() method is read by the IO constructor, which takes an IlvInputFile as its only argument. Both this method and the IO constructor can be automatically declared by using the DeclareScaleDisplayerTypeInfo macro within the class declaration.

Parameters

file	The file where the attributes of the current object are written.

Reimplemented from IlvAbstractScaleDisplayer.

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