Class for bar displayers. More...

#include <ilviews/charts/bar.h>

Inheritance diagram for IlvBarChartDisplayer:

Public Member Functions
	IlvBarChartDisplayer (IlvDim width=IlvChartDisplayerWidth, IlvPalette *palette=0)
	Constructor. More...

virtual void	getClipArea (IlvRect &area, const IlvTransformer *t) const
	Returns the clipping region that is used for the drawing. More...

IlvDim	getSize () const
	Returns the size of the bars used to represent the data. More...

virtual IlvDim	getSizeAlongBase () const
	Returns the size along the base for the graphical representation of a given data point. More...

IlUInt	getStrokeThreshold () const
	Returns the minimum width of a bar, below which the stroke of a rendering style is not used. More...

virtual IlvDim	getWidth () const
	Returns the width of the bars used to represent the data. More...

IlUInt	getWidthPercent () const
	Returns the width percentage of the bars used to represent the data. More...

virtual IlBoolean	isFilled () const
	Indicates whether the graphical representation is filled. More...

void	setStrokeThreshold (IlUInt threshold)
	Specifies the minimum width of a bar, below which the stroke of a rendering style is not used. More...

virtual void	setWidth (IlvDim width)
	Sets the width of the bars used to represent the data. More...

void	setWidthPercent (IlUInt width)
	Sets the width percentage of the space between two bars. More...

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

virtual IlvChartDisplayerPoints *	allocDisplayerPoints () const
	Allocates and returns an `IlvChartDisplayerPoints` object. More...

virtual IlBoolean	boundingBox (IlvRect &bbox, const IlvTransformer *t=0) const
	Returns the bounding box of the graphical representation of data. More...

virtual IlBoolean	dataPointBBox (IlUInt dataPtIdx, IlvRect &bbox, IlBoolean takeInfoIntoAccount=IlTrue, const IlvTransformer *t=0) const
	Returns the bounding box of the graphical representation of the data points at a given index. More...

virtual void	draw (IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws the graphical representation of data. More...

virtual void	drawDataPoint (IlUInt dataPtIdx, IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws the graphical representation of the data point(s) at a given index. More...

virtual void	drawDataPoints (IlUInt iMin, IlUInt iMax, IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws the graphical representation of the data points between a given interval. More...

virtual void	drawFill (IlBoolean b)
	Sets the filling mode of the displayer. More...

virtual void	drawLegendItem (IlvPort dst, const IlvRect &legendArea, IlvPalette itemPal, const IlvRegion *clip, IlAny clientData=0) const
	Draws the graphic part of a legend item associated with the current displayer. More...

virtual IlvColor *	getBackground (IlUInt index=0) const
	Returns the background color of a palette used by the current displayer to display data. More...

void	getDataDisplayArea (IlvRect &dataDisplayArea, const IlvTransformer *t=0) const
	Returns the bounds of the data display area. More...

IlvChartDisplayerPointsFactory *	getDisplayerPointsFactory () const
	Returns the factory used to create `IlvChartDisplayerPoints` instances. More...

virtual IlUInt	getDisplayersCount () const
	Returns the number of displayers. More...

virtual IlUInt	getDisplayItem (IlvChartDataSet &dataSet, const IlvPoint &viewPoint, const IlvTransformer t) const
	Returns the item to which a view point corresponds. More...

virtual IlBoolean	getDisplayPoint (const IlvChartDataSet dataSet, IlUInt dataPtIdx, IlvPoint &point, const IlvTransformer t=0) const
	Returns the corresponding screen point for a data point. More...

virtual IlvColor *	getForeground (IlUInt index=0) const
	Returns the foreground color of a palette used by the current displayer to display data. More...

virtual const char *	getInternalLegendText (IlUInt index=0) const
	Returns the legend text stored in the current displayer. More...

virtual const char *	getLegendText (IlUInt index=0) const
	Returns the text that will be used in a legend for the current displayer. More...

virtual IlUInt	getNearestPoint (IlvChartDataSet &dataSet, const IlvPoint &viewPoint, IlvDim distance, IlvPoint &point, const IlvTransformer t=0) const
	Returns the nearest data point. More...

virtual IlvPalette *	getPalette (IlUInt=0) const
	Returns a palette used by the current displayer to display data. More...

virtual IlvPointInfoCollection *	getPointInfoCollection (const IlvChartDataSet *dataSet) const
	Returns the point information collection defined to be used to display a given data set. More...

IlvPos	getShiftOffset () const
	Returns the offset by which the graphical representation of data is shifted along the base of the chart. More...

IlBoolean	isDrawingFill () const
	Returns the filling mode for the current displayer. More...

virtual void	releaseDisplayerPoints (IlvChartDisplayerPoints *dispPts) const
	Releases an `IlvChartDisplayerPoints` object used by the current displayer. More...

virtual void	setBackground (IlvColor *color, IlUInt index=0)
	Sets the background color of a palette used by the current displayer to display data. More...

virtual IlBoolean	setDataPoint (IlvChartDataSet dataSet, IlUInt dataPtIdx, const IlvPoint &point, const IlvTransformer t=0) const
	Sets the corresponding data point from a screen point. More...

IlvChartDisplayerPointsFactory *	setDisplayerPointsFactory (IlvChartDisplayerPointsFactory *factory)
	Sets the factory used to create `IlvChartDisplayerPoints` instances. More...

virtual void	setForeground (IlvColor *color, IlUInt index=0)
	Sets the foreground color of a palette used by the current displayer to display data. More...

virtual void	setLegendItems (IlvChartLegend *legend) const
	Sets the legend items associated with the current displayer. More...

virtual void	setLegendText (const char *text, IlUInt index=0)
	Sets the text that will be used in a legend for the current displayer. More...

virtual void	setMode (IlvDrawMode mode)
	Sets the drawing mode. More...

virtual void	setOverwrite (IlBoolean o)
	Sets the overwrite mode. More...

virtual void	setPalette (IlvPalette *pal, IlUInt index=0)
	Sets a palette used by the current displayer to display data. More...

virtual void	setPointInfoCollection (const IlvChartDataSet dataSet, IlvPointInfoCollection ptInfoCollection)
	Sets the point information collection that will be used to display a given data set. More...

void	setShiftOffset (IlvPos offset)
	Sets the offset by which the graphical representation of data is shifted along the base of the chart. More...

virtual void	treatPointsOutOfAbscissaLimits (const IlvRect &dataDisplayArea, IlvChartDisplayerPoints *displayerPoints, const IlvCoordInterval &abscissaRange, const IlvPoint &minLimit, const IlvPoint &maxLimit) const
	Treats the occurrence of points in screen coordinates that are outside the abscissa limits. More...

virtual IlBoolean	usePointInfo () const
	Indicates whether point information collections are defined. More...

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

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

void	addDataSet (IlvChartDataSet *dataSet)
	Adds a real data set to be displayed by the current displayer. More...

virtual IlBoolean	canBeProjectedIfOutOfBounds () const
	Indicates whether the graphical representation can be projected when it is out-of-bounds. More...

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

IlBoolean	dataPointToDisplay (const IlvDoublePoint &dataPoint, IlvPoint &point, const IlvTransformer *t=0) const
	Projects a data point into screen coordinates. More...

virtual IlBoolean	displayDataSet (const IlvChartDataSet *dataSet) const
	Indicates whether the current displayer displays a data set. More...

IlBoolean	displayToDataPoint (const IlvPoint &point, IlvDoublePoint &dataPoint, const IlvTransformer *t=0) const
	Inversely projects a screen point to retrieve the corresponding data point. More...

IlvChartGraphic *	getChartGraphic () const
	Returns the chart graphic which uses the current displayer. More...

IlvChartDataSet *	getDataSet (IlUInt index=0) const
	Returns a data set used by the current displayer. More...

IlUInt	getDataSetsCount () const
	Returns the number of data sets used by the current displayer. More...

IlUInt	getMaxDataSetsCount () const
	Returns the maximum number of real data sets that the current displayer is allowed to display. More...

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

IlvCoordinateInfo *	getOrdinateInfo () const
	Deprecated Returns the coordinate information associated with the ordinate scale considered to display data. More...

const IlvCompositeChartDisplayer *	getParentDisplayer () const
	Returns the parent displayer. More...

virtual IlvChartDataPointInfo *	getPointInfo (IlUInt dataPtIdx, const IlvChartDataSet *dataSet=0) const
	Returns the point information associated with a given data point. More...

virtual IlvPalette *	getProjectedPointsPalette () const
	Returns the palette used to display out-of-bounds values. More...

IlvChartDataSet *	getRealDataSet (IlUInt index=0) const
	Returns a real data set to be displayed by the current displayer. More...

IlUInt	getRealDataSetsCount () const
	Returns the number of real data sets. More...

virtual IlvCombinedChartDataSet *	getVirtualDataSet (const IlvChartDataSet *dataSet, IlUInt &index) const
	Returns a virtual data set used by the current displayer. More...

virtual IlBoolean	graphicalRepresentationByDataPoint () const
	Indicates whether there is a graphical representation by data point. More...

virtual void	insertDataSet (IlvChartDataSet *dataSet, IlUInt index=IlvLastPositionIndex)
	Inserts a real data set to be displayed by the current displayer. More...

virtual IlBoolean	isContinuous () const
	Indicates whether the graphical representation is continuous. More...

virtual IlBoolean	isViewable () const
	Indicates whether the graphical representation can be viewed. More...

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

virtual void	removeDataSet (IlvChartDataSet *dataSet)
	Removes a real data set from the data sets to be displayed by the current displayer. More...

virtual void	removeDataSets ()
	Removes all the real data sets to be displayed by the current displayer.

void	removePointInfoCollection (const IlvChartDataSet *dataSet)
	Removes the point information collection defined to be used to display a given data set. More...

virtual IlBoolean	replaceDataSet (IlvChartDataSet oldDataSet, IlvChartDataSet newDataSet)
	Replaces a real data set with another one. More...

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

virtual void	setChartGraphic (IlvChartGraphic *chart)
	Sets the chart graphic which uses the current displayer. More...

virtual void	setDataSet (IlvChartDataSet *dataSet, IlUInt index=0)
	Sets a real data set to be displayed by the current displayer. More...

void	setDataSet (IlvChartDataSet dataSet, IlvPalette palette, IlUInt index=0)
	Sets a real data set to be displayed by the current displayer. More...

virtual void	setDataSets (IlUInt count, IlvChartDataSet const dataSets)
	Sets the real data sets to be displayed by the current displayer. More...

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

virtual void	setOrdinateInfo (IlvCoordinateInfo *ordinateInfo)
	Sets the coordinate information associated with the ordinate scale considered to display data. More...

void	setParentDisplayer (const IlvCompositeChartDisplayer *displayer)
	Sets the parent displayer. More...

void	setVirtualDataSet (IlvCombinedChartDataSet *vDataSet, IlUInt index=0)
	Sets a virtual data set used by the current displayer. More...

void	setVisible (IlBoolean visible)
	Specifies whether the graphical representation is visible. More...

virtual IlBoolean	useVirtualDataSets () const
	Indicates whether the current displayer uses virtual data sets. More...

Protected Member Functions
virtual void	boundingBoxOfPoints (IlvChartDisplayerPoints dspPts, IlvRect &bbox, IlBoolean takeInfoIntoAccount, const IlvTransformer t=0) const
	Computes the bounding box of the graphical representation from points in screen coordinates corresponding to the data points to display. More...

virtual void	computeItem (const IlvChartDisplayerPoints dspPts, IlUInt pointIndex, IlUInt &usedPointsCount, IlvPoint points, const IlvTransformer *t=0) const
	Computes the item that will be displayed for a given point in screen coordinates corresponding to a data point to display. More...

virtual void	drawItem (const IlvChartDisplayerPoints dspPts, IlUInt pointIndex, IlUInt pointCount, IlvPoint points, IlvPalette itemPalette, IlvPort dst, const IlvTransformer t=0, const IlvRegion clip=0) const
	Draws the item for a given point in screen coordinates corresponding to a data point to display. More...

virtual IlUInt	getItemPointsCount (const IlvChartDisplayerPoints *dspPts) const
	Returns the maximum number of points needed to define an item for the current displayer. More...

Protected Member Functions inherited from IlvSingleChartDisplayer
	IlvSingleChartDisplayer (const IlvSingleChartDisplayer &displayer)
	Constructor. More...

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

	IlvSingleChartDisplayer (IlvPalette *palette=0)
	Constructor. More...

virtual void	boundingBoxOfItem (const IlvChartDisplayerPoints displayerPoints, IlUInt pointIndex, IlUInt pointsCount, IlvPoint points, IlvRect &bbox, IlBoolean takeInfoIntoAccount=IlTrue, const IlvTransformer *t=0) const
	Returns the bounding box of the item drawn for a given point in screen coordinates corresponding to a data point to display. More...

IlBoolean	boundingBoxOfPart (const IlvCoordInterval &abscissaRange, IlBoolean shiftOfCycleLength, IlvRect &partBBox, IlBoolean takeInfoIntoAccount, const IlvTransformer *t=0) const
	Returns the bounding box of a part of the graphical representation of data. More...

virtual IlBoolean	computeLimitsForDataSelection (const IlvRect &clipRect, const IlvCoordInterval &abscissaRange, const IlvCoordInterval &ordinateRange, IlvCoordInterval &abscissaSelectionRange, IlvCoordInterval &ordinateSelectionRange, IlBoolean &dataToSelect, const IlvTransformer *t=0) const
	Computes the abscissa and ordinate intervals used to select the data to be displayed in a given rectangle. More...

void	drawPart (const IlvCoordInterval &abscissaRange, IlBoolean shiftOfCycleLength, IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws a part of the graphical representation of data. More...

virtual void	drawPointInfos (const IlvChartDisplayerPoints displayerPoints, IlvPort dst, const IlvTransformer t=0, const IlvRegion clip=0, const IlvChartDataSet *dataSet=0) const
	Draws the point information defined for the data points to be displayed. More...

virtual void	drawPoints (IlvChartDisplayerPoints displayerPoints, IlvPort dst, const IlvTransformer t=0, const IlvRegion clip=0) const
	Draws the graphical representation from points in screen coordinates corresponding to the data points to display. More...

IlUInt	getNearestPointInsidePart (const IlvCoordInterval &abscissaRange, IlBoolean shiftOfCycleLength, IlvChartDataSet &dataSet, const IlvPoint &viewPoint, IlvDim distance, IlvPoint &point, const IlvTransformer t=0) const
	Returns the nearest data point within a given abscissa range. More...

virtual IlUInt	pointsContains (const IlvPoint &viewPoint, IlvChartDisplayerPoints , const IlvTransformer t=0) const
	Returns the index of the data point of which the corresponding displayer item holds viewPoint.

virtual IlvDoublePoint *	selectDataPointsForPoint (IlUInt dataPtIdx, IlUInt &count, IlUInt *&dataPtIdxes) const
	Selects and returns the data points needed to be able to display the graphical representation of the data point(s) at a given index in the real data set(s) to be displayed by the current displayer. More...

virtual IlvDoublePoint *	selectDataPointsForRange (const IlvCoordInterval &abscissaRange, IlUInt &pointCount, IlUInt &dataPtIdxes, const IlvTransformer t=0, const IlvRect *clip=0) const
	Selects And returns the data points to display that are within a given abscissa interval. More...

virtual IlvDoublePoint *	selectDataPointsInRect (IlUInt &pointCount, IlUInt &dataPtIndexes, IlvRect pickRect, const IlvTransformer t=0) const
	Selects the data points that are rendered within a rectangle. More...

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

	IlvAbstractChartDisplayer (const IlvAbstractChartDisplayer &displayer)
	Constructor. More...

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

virtual void	dataSetAdded (IlUInt position=IlvLastPositionIndex)
	Performs the updates needed when a real data set is added. More...

virtual void	dataSetRemoved (IlUInt index)
	Performs the updates needed when a real data set is removed. More...

virtual void	update ()
	Performs the updates needed when modifications (removing, adding, replacing) are made to the real data sets.

virtual void	updateVirtualDataSets ()
	Updates the virtual data sets. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvAbstractChartDisplayer
static IlvAbstractChartDisplayer *	Load (IlvInputFile &file)
	Reads a displayer object from a file. More...

Detailed Description

Class for bar displayers.

Library: ilvcharts

This class is a subclass of IlvSingleChartDisplayer which allows you to represent data with bars.

The bar displayer displays a unique data set. This displayer can be used with any type of projection (see the IlvAbstractProjector class for more details).

The images below show data sets represented with bar displayers in a Cartesian chart (on the left) and a polar chart (on the right).

See also: IlvSingleChartDisplayer.

Constructor & Destructor Documentation

◆ IlvBarChartDisplayer()

IlvBarChartDisplayer::IlvBarChartDisplayer	(	IlvDim	width = `IlvChartDisplayerWidth`,
		IlvPalette *	palette = `0`
	)

Constructor.

Initializes a new IlvBarChartDisplayer object.

Parameters

width	The width of the bars that will be used to represent the data.
palette	The palette that will be used to display the bars.

Member Function Documentation

◆ boundingBoxOfPoints()

virtual void IlvBarChartDisplayer::boundingBoxOfPoints	(	IlvChartDisplayerPoints *	dspPts,
		IlvRect &	bbox,
		IlBoolean	takeInfoIntoAccount,
		const IlvTransformer *	t = `0`
	)		const

protectedvirtual

Computes the bounding box of the graphical representation from points in screen coordinates corresponding to the data points to display.

See the IlvSingleChartDisplayer::boundingBoxOfPoints method for more details.

This method calls the IlvSingleChartDisplayer::boundingBoxOfPoints method, then enlarges the computed bounding box by extending it to the origin (see the IlvBarChartDisplayer::isFilled method for more information), and finally expands it by half the width of the bars.

Reimplemented from IlvSingleChartDisplayer.

Reimplemented in Ilv3dBarChartDisplayer.

◆ computeItem()

virtual void IlvBarChartDisplayer::computeItem	(	const IlvChartDisplayerPoints *	dspPts,
		IlUInt	pointIndex,
		IlUInt &	usedPointsCount,
		IlvPoint *	points,
		const IlvTransformer *	t = `0`
	)		const

protectedvirtual

Computes the item that will be displayed for a given point in screen coordinates corresponding to a data point to display.

Computes the points defining the item that will be displayed for the point in screen coordinates that is stored at the index pointIndex in the dspPts object. This object stores the points in screen coordinates corresponding to the data points that have to be displayed by the current displayer. (See the IlvSingleChartDisplayer::computeItem method for more details.)

The item that will be displayed for a given screen point corresponding to a data point is a bar. This bar is defined by five points: four points corresponding to the corners of the bar and one screen point corresponding to the data point for which the item is displayed. The following figure shows these points. The indexes at which the points are stored in the array points that is used to return the points defining the item are displayed next to the points.

The number of computed points defining the item (that is, 5) is returned in usedPointsCount.

Implements IlvSingleChartDisplayer.

Reimplemented in Ilv3dBarChartDisplayer.

◆ drawItem()

virtual void IlvBarChartDisplayer::drawItem	(	const IlvChartDisplayerPoints *	dspPts,
		IlUInt	pointIndex,
		IlUInt	pointCount,
		IlvPoint *	points,
		IlvPalette *	itemPalette,
		IlvPort *	dst,
		const IlvTransformer *	t = `0`,
		const IlvRegion *	clip = `0`
	)		const

protectedvirtual

Draws the item for a given point in screen coordinates corresponding to a data point to display.

Draws the item for the point in screen coordinates that is stored at the index pointIndex in the dspPts object. This object stores the points in screen coordinates corresponding to the data points that have to be displayed by the current displayer. (See the IlvSingleChartDisplayer::drawItem method for more details.)

This method draws the bar defined by the points stored in points. A polyline is drawn between the first and the fifth point with the foreground color of the palette itemPalette. The bar is filled with the background color of the palette itemPalette if the method IlvSingleChartDisplayer::isDrawingFill returns IlTrue. (See the IlvBarChartDisplayer::computeItem method for more details.)

Implements IlvSingleChartDisplayer.

Reimplemented in Ilv3dBarChartDisplayer.

◆ getClipArea()

virtual void IlvBarChartDisplayer::getClipArea	(	IlvRect &	area,
		const IlvTransformer *	t
	)		const

virtual

Returns the clipping region that is used for the drawing.

This method returns in area the clipping region that is used to clip the graphical representation of data drawn by the current object. If a transformer t is specified, the returned clipping region is transformed by t. The current implementation of the method returns in area the area obtained by the IlvSingleChartDisplayer::getClipArea method expanded along the base by the size of a bar (obtained by the IlvBarChartDisplayer::getSize method). The term base of a chart refers to the abscissa scale of this chart.

Parameters

area	The returned clipping region that is used by the current object for the drawing.
t	The transformer that is applied to the returned clipping region.

Reimplemented from IlvSingleChartDisplayer.

Reimplemented in Ilv3dBarChartDisplayer.

◆ getItemPointsCount()

virtual IlUInt IlvBarChartDisplayer::getItemPointsCount ( const IlvChartDisplayerPoints * dspPts ) const

protectedvirtual

Returns the maximum number of points needed to define an item for the current displayer.

See the IlvBarChartDisplayer::computeItem method for more details.

Parameters

dspPts The object that stores the points in screen coordinates to be displayed by the current displayer.

Returns: 5.

Reimplemented from IlvSingleChartDisplayer.

Reimplemented in Ilv3dBarChartDisplayer.

◆ getSize()

IlvDim IlvBarChartDisplayer::getSize ( ) const

Returns the size of the bars used to represent the data.

Returns: The size of the bars used to represent the data.

Note: This size corresponds to half the width of a bar in the case of a simple bar and to the width of a bar in the case of a 3D bar.

◆ getSizeAlongBase()

virtual IlvDim IlvBarChartDisplayer::getSizeAlongBase ( ) const

virtual

Returns the size along the base for the graphical representation of a given data point.

See the IlvSingleChartDisplayer::getSizeAlongBase() method for more details.

Returns: The size along the base of a bar used to represent the data.

Note: This size corresponds to twice the value returned by the IlvBarChartDisplayer::getSize() method.

Reimplemented from IlvSingleChartDisplayer.

◆ getStrokeThreshold()

IlUInt IlvBarChartDisplayer::getStrokeThreshold ( ) const

Returns the minimum width of a bar, below which the stroke of a rendering style is not used.

The default value is 6.

See also: setStrokeThreshold

◆ getWidth()

virtual IlvDim IlvBarChartDisplayer::getWidth ( ) const

virtual

Returns the width of the bars used to represent the data.

Returns: The width of the bars used to represent the data.

Reimplemented in Ilv3dBarChartDisplayer.

◆ getWidthPercent()

IlUInt IlvBarChartDisplayer::getWidthPercent ( ) const

Returns the width percentage of the bars used to represent the data.

Returns: The width percentage of the bars used to represent the data.

◆ isFilled()

virtual IlBoolean IlvBarChartDisplayer::isFilled ( ) const

virtual

Indicates whether the graphical representation is filled.

This method indicates whether the graphical representation is filled. A graphical representation is filled for a given data point if it is not only located around this data point but also if it extends towards the origin. This is the case for displayers representing data with bars. A bar begins at the data point position and is drawn to the abscissa scale in Cartesian charts and to the center of the data display area in polar charts.

Returns: IlTrue by default.

Reimplemented from IlvAbstractChartDisplayer.

◆ setStrokeThreshold()

void IlvBarChartDisplayer::setStrokeThreshold ( IlUInt threshold )

Specifies the minimum width of a bar, below which the stroke of a rendering style is not used.

Parameters

threshold The new threshold in pixel. Bars with a width smaller than this threshold will not be rendered with a stroke, unless they are not filled.

See also: getStrokeThreshold

◆ setWidth()

virtual void IlvBarChartDisplayer::setWidth ( IlvDim width )

virtual

Sets the width of the bars used to represent the data.

Parameters

width The new width of the bars used to represent the data.

Reimplemented in Ilv3dBarChartDisplayer.

◆ setWidthPercent()

void IlvBarChartDisplayer::setWidthPercent ( IlUInt width )

Sets the width percentage of the space between two bars.

The bars width will be computed as a percentage of the available space between two abscissa points. Therefore, the bars width will grow along if the chart is enlarged.

Parameters

width The width percentage, between 0 and 100.

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ IlvBarChartDisplayer()

Member Function Documentation

◆ boundingBoxOfPoints()

◆ computeItem()

◆ drawItem()

◆ getClipArea()

◆ getItemPointsCount()

◆ getSize()

◆ getSizeAlongBase()

◆ getStrokeThreshold()

◆ getWidth()

◆ getWidthPercent()

◆ isFilled()

◆ setStrokeThreshold()

◆ setWidth()

◆ setWidthPercent()