This is a base-class for all bar graphs with vertical or horizontal orientation (the orientation is implemented in dervied classes!) More...

#include <jkqtpbarchartbase.h>

Inheritance diagram for JKQTPBarGraphBase:

[legend]

Collaboration diagram for JKQTPBarGraphBase:

[legend]

Classes
struct	SimpleFillBrushFunctorAdaptor
	adapter that converts a SimpleFillBrushFunctor to a FillBrushFunctor More...

Public Types
typedef std::function< void(JKQTPEnhancedPainter &painter, const QRectF &bar_px, const QPointF &datapoint, Qt::Orientation orientation, JKQTPBarGraphBase *graph)>	CustomDrawingFunctor
	functor for custom drawing of bars
typedef std::function< QBrush(double key, double value, JKQTPEnhancedPainter &painter, JKQTPBarGraphBase *graph)>	FillBrushFunctor
	a type of functor for FillMode::FunctorFilling
enum	FillMode { SingleFilling =0 , TwoColorFilling =1 , FunctorFilling =2 }
	specifies how the area below the graph is filled More...
typedef std::function< QBrush(double key, double value)>	SimpleFillBrushFunctor
	a simplified type of functor for FillMode::FunctorFilling
Public Types inherited from JKQTPXYGraph
enum	DataSortOrder { Unsorted =0 , SortedX =1 , SortedY =2 }
	specifies how to sort the data in a JKQTPXYGraph before drawing More...
Public Types inherited from JKQTPPlotElement
enum	HitTestMode { HitTestXY , HitTestXOnly , HitTestYOnly }
	modes of operation for the function hitTest() More...

Public Slots
virtual void	autoscaleBarWidthAndShift (double maxWidth=0.75, double shrinkFactor=0.9)
	finds all bar charts of the same orientation and determines width and shift, so they stand side by side
void	autoscaleBarWidthAndShiftSeparatedGroups (double groupWidth=0.75)
	equivalent to `autoscaleBarWidthAndShift`(groupWidth,0.9);
void	setBarHeightColumn (int column)
	returns xColumn or yColumn, whichever is used for the height of the bars (depending on whether the barchart is vertical or horizontal
void	setBarHeightColumn (size_t column)
	returns xColumn or yColumn, whichever is used for the height of the bars (depending on whether the barchart is vertical or horizontal
void	setBarPositionColumn (int column)
	returns xColumn or yColumn, whichever is used for the position of the bars (depending on whether the barchart is vertical or horizontal
void	setBarPositionColumn (size_t column)
	returns xColumn or yColumn, whichever is used for the position of the bars (depending on whether the barchart is vertical or horizontal
virtual void	setColor (QColor c)
	set outline and fill color at the same time
void	setCustomDrawingFunctor (const JKQTPBarGraphBase::CustomDrawingFunctor &f)
	this allows to provide custom drawing code for the bars. It is called for every visible bar if activated by `setUseCustomDrawFunctor(true)` .
void	setCustomDrawingFunctor (JKQTPBarGraphBase::CustomDrawingFunctor &&f)
	this allows to provide custom drawing code for the bars. It is called for every visible bar if activated by `setUseCustomDrawFunctor(true)` .
void	setDrawBaseline (bool __value)
	indicates whether to draw a line with style m_baselineStyle at the baseline-value
void	setFillBrushFunctor (const JKQTPBarGraphBase::FillBrushFunctor &f)
	functor, used to determine the color in m_fillMode==FunctorFilling
void	setFillBrushFunctor (const JKQTPBarGraphBase::SimpleFillBrushFunctor &f)
	functor, used to determine the color in m_fillMode==FunctorFilling
void	setFillBrushFunctor (JKQTPBarGraphBase::FillBrushFunctor &&f)
	functor, used to determine the color in m_fillMode==FunctorFilling
void	setFillBrushFunctor (JKQTPBarGraphBase::SimpleFillBrushFunctor &&f)
	functor, used to determine the color in m_fillMode==FunctorFilling
void	setFillMode (JKQTPBarGraphBase::FillMode mode)
	specifies how the area of the graph is filles
void	setLineColorDerivationModeForSpecialFill (const JKQTPColorDerivationMode &m)
	defines how to derive the line color in m_fillMode!=SingleFilling
void	setRectRadius (double all)
	sets the corner radius of the bars for both ends
void	setRectRadius (double atValue, double atBaseline)
	sets the corner radius of the bars for both ends
void	setRectRadiusAtBaseline (double __value)
	corner radius (in pt) for bars at the "baseline" end
void	setRectRadiusAtValue (double __value)
	corner radius (in pt) for bars at the "value" end
void	setShift (double __value)
	the shift of the bargraphs, relative to the distance between the current and the next x-value
void	setStackSeparation (double __value)
	separation (in pt) between two bars in a stack of bars
void	setUseCustomDrawFunctor (bool enabled)
	enabled custom drawing by m_customDrawFunctor
void	setWidth (double __value)
	the width of the bargraphs, relative to the distance between the current and the next x-value
Public Slots inherited from JKQTPXYBaselineGraph
void	setBaseline (double __value)
	baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
Public Slots inherited from JKQTPXYGraph
void	setDataSortOrder (DataSortOrder __value)
	if `!=Unsorted`, the data is sorted before plotting
void	setDataSortOrder (int __value)
	if `!=Unsorted`, the data is sorted before plotting
virtual void	setKeyColumn (int __value)
	sets the column used as "key" for the current graph (typically this call setXColumn(), but for horizontal graphs like filled curves or barcharts it may call setYColumn() )
virtual void	setValueColumn (int __value)
	sets the column used as "value" for the current graph (typically this call setXColumn(), but for horizontal graphs like filled curves or barcharts it may call setYColumn() )
void	setXColumn (int __value)
	the column that contains the x-component of the datapoints
void	setXColumn (size_t __value)
	the column that contains the x-component of the datapoints
void	setXYColumns (int xCol, int yCol)
	sets xColumn and yColumn at the same time
void	setXYColumns (QPair< int, int > xyColPair)
	sets xColumn and yColumn at the same time
void	setXYColumns (QPair< size_t, size_t > xyColPair)
	sets xColumn and yColumn at the same time
void	setXYColumns (size_t xCol, size_t yCol)
	sets xColumn and yColumn at the same time
void	setYColumn (int __value)
	the column that contains the y-component of the datapoints
void	setYColumn (size_t __value)
	the column that contains the y-component of the datapoints
Public Slots inherited from JKQTPPlotElement
void	setHighlighted (bool __value)
	sets whether the graph is drawn in a highlighted style in the plot
virtual void	setTitle (const QString &__value)
	sets the title of the plot (for display in key!).
void	setVisible (bool __value)
	sets whether the graph is visible in the plot

Public Member Functions
	JKQTPBarGraphBase (JKQTBasePlotter *parent=nullptr)
	class constructor
	JKQTPBarGraphBase (JKQTPlotter *parent)
	class constructor
JKQTPGraphLineStyleMixin &	baselineStyle ()
	if m_drawBaseline `==true` then this style is used to draw the baseline
const JKQTPGraphLineStyleMixin &	baselineStyle () const
	if m_drawBaseline `==true` then this style is used to draw the baseline
virtual void	drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
	plots a key marker inside the specified rectangle rect
JKQTPGraphFillStyleMixin &	fillStyleBelow ()
	if m_fillMode `==FillAboveAndBelowDifferently` then this fill style is used below the baseline and the default fill style is used above
const JKQTPGraphFillStyleMixin &	fillStyleBelow () const
	if m_fillMode `==FillAboveAndBelowDifferently` then this fill style is used below the baseline and the default fill style is used above
int	getBarHeightColumn () const
	returns xColumn or yColumn, whichever is used for the height of the bars (depending on whether the barchart is vertical or horizontal
int	getBarPositionColumn () const
	returns xColumn or yColumn, whichever is used for the position of the bars (depending on whether the barchart is vertical or horizontal
bool	getDrawBaseline () const
	indicates whether to draw a line with style m_baselineStyle at the baseline-value
FillBrushFunctor &	getFillBrushFunctor ()
	functor, used to determine the color in m_fillMode==FunctorFilling
const FillBrushFunctor &	getFillBrushFunctor () const
	functor, used to determine the color in m_fillMode==FunctorFilling
FillMode	getFillMode () const
	specifies how the area of the graph is filles
virtual QColor	getKeyLabelColor () const override
	returns the color to be used for the key label
JKQTPColorDerivationMode	getLineColorDerivationModeForSpecialFill () const
	defines how to derive the line color in m_fillMode!=SingleFilling
double	getRectRadiusAtBaseline () const
	corner radius (in pt) for bars at the "baseline" end
double	getRectRadiusAtValue () const
	corner radius (in pt) for bars at the "value" end
double	getShift () const
	the shift of the bargraphs, relative to the distance between the current and the next x-value
double	getStackSeparation () const
	separation (in pt) between two bars in a stack of bars
double	getWidth () const
	the width of the bargraphs, relative to the distance between the current and the next x-value
void	setFillColor_and_darkenedColor (QColor fill, int colorDarker=200)
	sets the fill color and the color together, where fillColor is set to fill and the line-color is set to `fill.darker(colorDarker)`
bool	usesCustomDrawFunctor () const
	enabled custom drawing by m_customDrawFunctor
Public Member Functions inherited from JKQTPXYBaselineGraph
	JKQTPXYBaselineGraph (JKQTBasePlotter *parent=nullptr)
	class constructor
double	getBaseline () const
	baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
Public Member Functions inherited from JKQTPXYGraph
	JKQTPXYGraph (JKQTBasePlotter *parent=nullptr)
	class constructor
DataSortOrder	getDataSortOrder () const
	if `!=Unsorted`, the data is sorted before plotting
virtual int	getKeyColumn () const
	returns the column used as "key" for the current graph (typically this call getXColumn(), but for horizontal graphs like filled curves or barcharts it may call getYColumn() )
virtual int	getValueColumn () const
	returns the column used as "value" for the current graph (typically this call getXColumn(), but for horizontal graphs like filled curves or barcharts it may call getYColumn() )
int	getXColumn () const
	the column that contains the x-component of the datapoints
virtual bool	getXMinMax (double &minx, double &maxx, double &smallestGreaterZero) override
	get the maximum and minimum x-value of the graph
int	getYColumn () const
	the column that contains the y-component of the datapoints
virtual bool	getYMinMax (double &miny, double &maxy, double &smallestGreaterZero) override
	get the maximum and minimum y-value of the graph
virtual double	hitTest (const QPointF &posSystem, QPointF closestSpotSystem=nullptr, QString label=nullptr, HitTestMode mode=HitTestXY) const override
	Implmentation of JKQTPPlotElement::hitTest(), which searches through all graph points defined by xColumn and yColumn and returns a general x/y-label, also taking into account possibly known errors to the graphs (if it is derived from JKQTPXGraphErrorData and/or JKQTPYGraphErrorData.
virtual bool	usesColumn (int column) const override
	returns `true` if the given column is used by the graph
Public Member Functions inherited from JKQTPGraph
	JKQTPGraph (JKQTBasePlotter *parent=nullptr)
	class constructor
virtual	~JKQTPGraph ()=default
	default wirtual destructor
Public Member Functions inherited from JKQTPPlotElement
	JKQTPPlotElement (JKQTBasePlotter *parent=nullptr)
	class constructor
virtual	~JKQTPPlotElement ()=default
	default wirtual destructor
QPointF	backTransform (const QPointF &x) const
	tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
QPointF	backTransform (double x, double y) const
	tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
double	backtransformX (double x) const
	tool routine that backtransforms an x-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in xAxisRef
double	backtransformY (double y) const
	tool routine that backtransforms a y-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in yAxisRef
virtual void	draw (JKQTPEnhancedPainter &painter)=0
	plots the graph to the plotter object specified as parent
virtual void	drawOutside (JKQTPEnhancedPainter &painter, QRect leftSpace, QRect rightSpace, QRect topSpace, QRect bottomSpace)
	plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
QImage	generateKeyMarker (QSize size=QSize(16, 16))
	returns an image with a key marker inside
virtual void	getOutsideSize (JKQTPEnhancedPainter &painter, int &leftSpace, int &rightSpace, int &topSpace, int &bottomSpace)
	if the graph plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
JKQTBasePlotter *	getParent ()
	returns the parent painter class
const JKQTBasePlotter *	getParent () const
	returns the parent painter class
QString	getTitle () const
	returns the the title of the plot
const JKQTPCoordinateAxis *	getXAxis () const
	returns the actual x-Axis-object from the parent plotter, referenced in xAxisRef
JKQTPCoordinateAxisRef	getXAxisRef () const
	indicates which coordinate axis to use for coordinate transforms in x-direction
const JKQTPCoordinateAxis *	getYAxis () const
	returns the actual y-Axis-object from the parent plotter, referenced in yAxisRef
JKQTPCoordinateAxisRef	getYAxisRef () const
	indicates which coordinate axis to use for coordinate transforms in y-direction
bool	isHighlighted () const
	returns whether the graph is shown in a highlighted style in the plot
bool	isVisible () const
	returns whether the graph is visible in the plot
void	setAxes (JKQTPCoordinateAxisRef ref)
	set the coordinate axes to use for this plot element
virtual void	setParent (JKQTBasePlotter *parent)
	sets the parent painter class
virtual void	setParent (JKQTPlotter *parent)
	sets the parent painter class
void	setXAxis (JKQTPCoordinateAxisRef ref)
	indicates which coordinate axis to use for coordinate transforms in x-direction
void	setYAxis (JKQTPCoordinateAxisRef ref)
	indicates which coordinate axis to use for coordinate transforms in y-direction
QPointF	transform (const QPointF &x) const
	tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPolygonF	transform (const QPolygonF &x) const
	tool routine that transforms a QPolygonF according to the parent's transformation rules (plot coordinate --> pixels)
QPointF	transform (double x, double y) const
	tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPainterPath	transformToLinePath (const QPolygonF &x) const
	tool routine that transforms a QPolygonF according to the parent's transformation rules and returns a (non-closed) path consisting of lines (plot coordinate --> pixels)
QVector< double >	transformX (const QVector< double > &x) const
	transform all x-coordinates in a vector x
double	transformX (double x) const
	tool routine that transforms an x-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in xAxisRef
QVector< double >	transformY (const QVector< double > &x) const
	transform all y-coordinates in a vector x
double	transformY (double y) const
	tool routine that transforms a y-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in yAxisRef
Public Member Functions inherited from JKQTPGraphLineStyleMixin
	JKQTPGraphLineStyleMixin ()
	class constructor
virtual	~JKQTPGraphLineStyleMixin ()
QColor	getHighlightingLineColor () const
	get the color of the graph line when highlighted
QPen	getHighlightingLinePen (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties
QPen	getHighlightingLinePenForRects (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties, suitable for drawing rectangle with sharp corners
QPen	getKeyLinePen (JKQTPEnhancedPainter &painter, const QRectF &rect, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties, but uses getKeyLineWidthPx() for the width, i.e. constructs a pen for drawing lines in key-symbols
double	getKeyLineWidthPx (JKQTPEnhancedPainter &painter, const QRectF &keyRect, const JKQTBasePlotter *parent) const
	returns the linewidth for drawing lines in a key entry with keyRect for the symbol, using painter and parent .
QBrush	getLineBrush () const
	gets the brush used to fill the line area
Qt::PenCapStyle	getLineCapStyle () const
	gets the cap style
QColor	getLineColor () const
	get the color of the graph line
qreal	getLineDashOffset () const
	returns the dash offset for a custom dash style
QVector< qreal >	getLineDashPattern () const
	gets the dash pattern for a custom dash style
Qt::PenJoinStyle	getLineJoinStyle () const
	returns the join style
QPen	getLinePen (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties
QPen	getLinePenForRects (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties, suitable for drawing rectangles with sharp edges
Qt::PenStyle	getLineStyle () const
	get the style of the graph line
double	getLineWidth () const
	get the line width of the graph line (in pt)
void	initLineStyle (JKQTBasePlotter *parent, int &parentPlotStyle, JKQTPPlotStyleType styletype=JKQTPPlotStyleType::Default)
	initiaize the line style (from the parent plotter)
void	setHighlightingLineColor (const QColor &__value)
	set the color of the graph line when highlighted
void	setHighlightingLineColor (const QColor &__value, double alpha)
	set the color of the graph line when highlighted
void	setLineBrush (const QBrush &style)
	sets the brush used to fill the line area
void	setLineCapStyle (Qt::PenCapStyle style)
	sets the cap style
void	setLineColor (const QColor &__value)
	set the color of the graph line
void	setLineColor (const QColor &__value, double alpha)
	set the color of the graph line
void	setLineColorInvertedFrom (QColor __noninvertedColor)
	sets the line-color as an inverted version of the given color
void	setLineDashOffset (qreal offset)
	sets the dash offset for a custom dash style
void	setLineDashPattern (const QVector< qreal > &pattern)
	sets the dash pattern for a custom dash style
void	setLineJoinStyle (Qt::PenJoinStyle style)
	sets the join style
void	setLineStyle (Qt::PenStyle __value)
	set the style of the graph line
void	setLineWidth (double __value)
	set the line width of the graph line (in pt)
Public Member Functions inherited from JKQTPGraphFillStyleMixin
	JKQTPGraphFillStyleMixin ()
	class constructor
virtual	~JKQTPGraphFillStyleMixin ()
QBrush	getFillBrush (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QBrush from the graph fill styling properties
QColor	getFillColor () const
	set the color of the graph filling
const QGradient *	getFillGradient () const
	get the gradient object of the graph filling
Qt::BrushStyle	getFillStyle () const
	get the fill style of the graph
QPixmap	getFillTexture () const
	set the color of the graph filling
QImage	getFillTextureImage () const
	set the color of the graph filling
void	initFillStyle (JKQTBasePlotter *parent, int &parentPlotStyle, JKQTPPlotStyleType styletype=JKQTPPlotStyleType::Default)
	initiaize the fill style (from the parent plotter)
void	initFillStyleInvertedColor (JKQTPGraphFillStyleMixin *other)
	initiaize the fill style from another JKQTPGraphFillStyleMixin other by inverting its fill color
void	setFillBrush (const QBrush &b)
	sets a fill brush (overwrites all internal properties!)
void	setFillColor (const QColor &__value)
	set the color of the graph filling
void	setFillColor (const QColor &__value, double alpha)
	set the color of the graph filling
void	setFillGradient (const QGradient &__value)
	set the filling of the graph to a gradient and sets fill style to a gradient setting
void	setFillStyle (Qt::BrushStyle __value)
	set the fill style of the graph
void	setFillTexture (const QImage &__value)
	set the color of the graph filling and sets fill style to Qt::TexturePattern
void	setFillTexture (const QPixmap &__value)
	set the color of the graph filling and sets fill style to Qt::TexturePattern
void	setFillTransform (const QTransform &b)
	sets a fill transformation

Protected Member Functions
virtual bool	considerForAutoscaling (JKQTPBarGraphBase *other) const =0
	this function is used by autoscaleBarWidthAndShift() to determine whether a given graph shall be taken into account when autoscaling. Typically this returns `true` for all JKQTPBarGraphBase-derived objects with the same orientation (horizontal or vertical). For stacked graphs it excludes everything except the bottom of the stack
virtual FillBrushFunctor	constructFillBrushFunctor () const
	returns a FillBrushFunctor that is appropriate for the currently selected m_fillMode
virtual double	getParentStackedMax (int index) const
	used to generate stacked plots: returns the upper boundary of the parent plot in a stack, for the index-th datapoint
bool	getPositionsMinMax (double &mmin, double &mmax, double &smallestGreaterZero)
	get the maximum and minimum value of the box positions of the graph
bool	getValuesMinMax (double &mmin, double &mmax, double &smallestGreaterZero)
	get the maximum and minimum value in the box-elongation (i.e. value) direction of the graph
virtual bool	hasStackParent () const
	returns `true`, if a stack parent is set (if available)
Protected Member Functions inherited from JKQTPXYBaselineGraph
bool	getMinMaxWithBaseline (int dataColumn, double &minv, double &maxv, double &smallestGreaterZero)
	can be called by JKQTPGraph::getXMinMax() or JKQTPGraph::getYMinMax() calculates min/max/... for data from the given column, including the baseline
bool	getMinMaxWithErrorsAndBaseline (int dataColumn, int errorColumn, int errorColumnLower, bool errorSymmetric, double &minv, double &maxv, double &smallestGreaterZero)
	can be called by JKQTPGraph::getXMinMax() or JKQTPGraph::getYMinMax() calculates min/max/... for data from the given column, including the baseline and an optional error
Protected Member Functions inherited from JKQTPXYGraph
int	getDataIndex (int i) const
	returns the index of the i-th datapoint (where i is an index into the SORTED datapoints)
virtual bool	getIndexRange (int &imin, int &imax) const
	determines the range of row indexes available in the data columns of this graph
virtual void	intSortData ()
	sorts data according to the specified criterion in sortData ... The result is stored as a index-map in sorted Indices
Protected Member Functions inherited from JKQTPGraph
virtual void	drawErrorsAfter (JKQTPEnhancedPainter &)
	this function is used to plot error inidcators after plotting the graphs.
virtual void	drawErrorsBefore (JKQTPEnhancedPainter &)
	this function is used to plot error inidcators before plotting the graphs.
bool	getDataMinMax (int column, double &minx, double &maxx, double &smallestGreaterZero)
	get the maximum and minimum value of the given column
Protected Member Functions inherited from JKQTPPlotElement
void	addHitTestData (const HitTestLocation &loc)
	clear the internal datastore for hitTest()
void	addHitTestData (const QPointF &pos_, const QString &label_)
	clear the internal datastore for hitTest()
void	addHitTestData (const QPointF &pos_, int index_, const QString &label_)
	clear the internal datastore for hitTest()
void	addHitTestData (const QPointF &pos_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
	clear the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void	addHitTestData (double x_, double y_, const QString &label_)
	add a new point on the graph to the internal datastore for hitTest()
void	addHitTestData (double x_, double y_, int index_, const QString &label_)
	clear the internal datastore for hitTest()
void	addHitTestData (double x_, double y_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
	add a new point on the graph to the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void	clearHitTestData ()
	clear the internal datastore for hitTest()
virtual QString	formatHitTestDefaultLabel (double x, double y, int index=-1, const JKQTPDatastore *datastore=nullptr) const
	tool-function for hitTest(), which formats a default label, taking into account the x- and y-position (both provided) and optionally the errors of these positions.
void	reserveHitTestData (int points)
	reserve list entries for up to points graph points in the internal datastore for hitTest()
QString	xFloatToString (double v, int past_comma=-1) const
	converts a x-value v into a string, taking into account the type of x-axis
QString	yFloatToString (double v, int past_comma=-1) const
	converts a x-value v into a string, taking into account the type of x-axis

Protected Attributes
JKQTPGraphLineStyleMixin	m_baselineStyle
	if m_drawBaseline `==true` then this style is used to draw the baseline
CustomDrawingFunctor	m_customDrawFunctor
	this allows to provide custom drawing code for the bars. It is called for every visible bar if activated by `setUseCustomDrawFunctor(true)` .
bool	m_drawBaseline
	indicates whether to draw a line with style m_baselineStyle at the baseline-value
FillBrushFunctor	m_fillBrushFunctor
	functor, used to determine the color in m_fillMode==FunctorFilling
FillMode	m_fillMode
	specifies how the area of the graph is filles
JKQTPGraphFillStyleMixin	m_fillStyleBelow
	if m_fillMode `==FillAboveAndBelowDifferently` then this fill style is used below the baseline and the default fill style is used above
JKQTPColorDerivationMode	m_lineColorDerivationModeForSpecialFill
	defines how to derive the line color in m_fillMode!=SingleFilling
double	m_stackSeparation
	separation (in pt) between two bars in a stack of bars
bool	m_useCustomDrawFunctor
	enabled custom drawing by m_customDrawFunctor
double	rectRadiusAtBaseline
	corner radius (in pt) for bars at the "baseline" end
double	rectRadiusAtValue
	corner radius (in pt) for bars at the "value" end
double	shift
	the shift of the bargraphs, relative to the distance between the current and the next x-value
double	width
	the width of the bargraphs, relative to the distance between the current and the next x-value
Protected Attributes inherited from JKQTPXYBaselineGraph
double	m_baseline
	baseline of the plot (NOTE: 0 is interpreted as until plot border in log-mode!!!)
Protected Attributes inherited from JKQTPXYGraph
QVector< int >	sortedIndices
	this array contains the order of indices, in which to access the data in the data columns
Protected Attributes inherited from JKQTPPlotElement
QVector< HitTestLocation >	m_hitTestData
	dataset with graph-points and associated data from the function hitTest()
JKQTBasePlotter *	parent
	the plotter object this object belongs to
int	parentPlotStyle
	internal storage for the used parent plot style

Additional Inherited Members
Properties inherited from JKQTPXYBaselineGraph
double	baseline
Properties inherited from JKQTPXYGraph
DataSortOrder	sortData
	if `!=Unsorted`, the data is sorted before plotting
int	xColumn
	the column that contains the x-component of the datapoints
int	yColumn
	the column that contains the y-component of the datapoints
Properties inherited from JKQTPPlotElement
bool	highlighted
	indicates whether the graph is shown in a "highlghted" in the plot
QString	title
	title of the plot (for display in key!). If no title is supplied, no key entry is drawn.
bool	visible
	indicates whether the graph is visible in the plot
JKQTPCoordinateAxisRef	xAxisRef
	indicates which coordinate axis to use for coordinate transforms in x-direction
JKQTPCoordinateAxisRef	yAxisRef
	indicates which coordinate axis to use for coordinate transforms in y-direction
Properties inherited from JKQTPGraphLineStyleMixin
QColor	highlightingLineColor
QColor	lineColor
Qt::PenStyle	lineStyle
double	lineWidth
Properties inherited from JKQTPGraphFillStyleMixin
QColor	fillColor
Qt::BrushStyle	fillStyle

Detailed Description

This is a base-class for all bar graphs with vertical or horizontal orientation (the orientation is implemented in dervied classes!)

This class provides basic properties and functionality for plotting a bargraph. The latter is defined by a series of datapoints (x,y=f(x)) . Bars are then drawn fromm a baseline (often =0 ) to the value y=f(x) at each position x. Thus the class is derived from JKQTPXYBaselineGraph, which provides a baseline as well as columns for x and y values.

The width of each bar is determined from its distance to its direct neighbors. It occupies a fraction "width" (JKQTPBarGraphBase::setWidth(), JKQTPBarGraphBase::getWidth() ) of the available space. Typically width=0.9 so the bars occupy most space, but do not touch:

See also: JKQTPBarHorizontalGraph, JKQTPBarVerticalGraph for implementations of this virtual base class.

several JKQTPBarGraphBase side-by-side

If you draw several JKQTPBarGraphBase of the same orientation (vertical or honrizontal) into the same plot, these will by default overlap, if all of the use the same x-values and have the same initial width parameter. Typically in such a case, you want to group the bars by x-values and ensure they are drawn side-by-side and do not overlap (or overlap slightly in a controlled way).

To achieve this, an addition shift parameter (JKQTPBarGraphBase::setShift(), JKQTPBarGraphBase::getShift() ) was introduced, which moves each bar inside the available space:

By default the shift parameter (see JKQTPBarGraphBase::setShift() ) is, so the bar is centered at the x-value (i.e. shift=0 ).

You can now use shift to separate three JKQTPBarGraphBase in a graph, by setting e.g.:

*        width=0.3
*        shift=-0.3 / 0 / +0.3
*

For convenience, two functions are provided (JKQTPBarGraphBase::autoscaleBarWidthAndShift(), JKQTPBarGraphBase::autoscaleBarWidthAndShiftSeparatedGroups() ) that can be applied to any JKQTPBarGraphBase in the plot and will calculate all bargraphs' shift and width parameter in such a way that the graphs appear tidied up into groups as above. With these functions you don't have to calculate the shift and width values by hand! A call always only affects the JKQTPBarGraphBase in the plot with the same orientation (vertical or horizontal).

This results in a bargraph, as shown here:

Basic Bargraph Styling

There are several options that allow to style the barchraph. The most direct way is to use the setters from

that are available in the class and that allow directly chaning the appearance. It is also possibly to draw the baseline itself (JKQTPBarGraphBase::setDrawBaseline(true) ). Its style is defined in JKQTPBarGraphBase::baselineStyle() .

Several convenience functions allow to set these properties in a simplified way:

JKQTPBarGraphBase::setFillColor_and_darkenedColor()

By default this class will draw boxes for each bar. They can be rounded at the corners by setting:

JKQTPBarGraphBase::setRectRadiusAtValue()
JKQTPBarGraphBase::setRectRadiusAtBaseline()
JKQTPBarGraphBase::setRectRadius()

Data-Dependent Styling of Bargraphs

You can also use JKQTPBarGraphBase::setFillMode(JKQTPBarGraphBase::FillMode::TwoColorFilling), which uses different fill styles for bars above and below the baseline of the graph:

The styles for above the baseline is set by the inherited JKQTPGraphLineStyleMixin and JKQTPGraphFillStyleMixin. The alternate "below" style, can be modified using

JKQTPBarGraphBase::fillStyleBelow()
the line-style is the same as from the inherited JKQTPGraphLineStyleMixin

If you use JKQTPBarGraphBase::setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling) you can specify the fill style (in the form of a QBruch) for each bar by a custom functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) -> QBrush {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

Custom Bargraph Drawing

You can also completely customize the drawing by defining a custom draw functor. This allows to draw other shapes than the typical bars:

graph->setCustomDrawingFunctor(
  [](JKQTPEnhancedPainter& painter, const QRectF& bar_px, const QPointF& datapoint, Qt::Orientation orientation, JKQTPBarGraphBase* graph) {
    // draw the bar (if required), pen and brush are already set properly
    painter.drawRect(bar_px);
    // now we can add some decoration or replace the instruction above:
    // ........
  }
);
// enable usage of cutom draw functor
graph->setUseCustomDrawFunctor(true);

See Example (JKQTPlotter): Barchart With Custom Draw Functor for a detailed example.

The result may look like this:

Member Typedef Documentation

◆ CustomDrawingFunctor

typedef std::function<void(JKQTPEnhancedPainter& painter, const QRectF& bar_px, const QPointF& datapoint, Qt::Orientation orientation, JKQTPBarGraphBase* graph)> JKQTPBarGraphBase::CustomDrawingFunctor

functor for custom drawing of bars

◆ FillBrushFunctor

typedef std::function<QBrush(double key, double value,JKQTPEnhancedPainter &painter, JKQTPBarGraphBase* graph)> JKQTPBarGraphBase::FillBrushFunctor

a type of functor for FillMode::FunctorFilling

See also: setFillBrushFunctor(), getFillBrushFunctor()

◆ SimpleFillBrushFunctor

typedef std::function<QBrush(double key, double value)> JKQTPBarGraphBase::SimpleFillBrushFunctor

a simplified type of functor for FillMode::FunctorFilling

See also: setFillBrushFunctor(), getFillBrushFunctor()

Member Enumeration Documentation

◆ FillMode

enum JKQTPBarGraphBase::FillMode

specifies how the area below the graph is filled

See also: setFillMode(), getFillMode(), fillStyleBelow(), Example (JKQTPlotter): Wiggle Plots

Enumerator
SingleFilling	the whole area is filled with the same color/pattern
TwoColorFilling	the area above and below baseline with the two different colors/pattern
FunctorFilling	a functor (use setFillBrushFunctor() to define one) is used to determine the fill color

Constructor & Destructor Documentation

◆ JKQTPBarGraphBase() [1/2]

JKQTPBarGraphBase::JKQTPBarGraphBase ( JKQTBasePlotter * parent = nullptr )

class constructor

◆ JKQTPBarGraphBase() [2/2]

JKQTPBarGraphBase::JKQTPBarGraphBase ( JKQTPlotter * parent )

class constructor

Member Function Documentation

◆ autoscaleBarWidthAndShift

virtual void JKQTPBarGraphBase::autoscaleBarWidthAndShift	(	double	maxWidth = 0.75,
		double	shrinkFactor = 0.9 )

virtualslot

finds all bar charts of the same orientation and determines width and shift, so they stand side by side

Parameters

maxWidth	the maximum (relative) width, that all bars will span of the (doubled) inter-bar distance
shrinkFactor	factor, by which the bar are shrinked compared to the available space

Note: This function will scale ALL graphs of the parent plot, which were derived from JKQTPBarHorizontalGraph, that match in orientation (as returned by isHorizontal() ).

Using autoscaleBarWidthAndSHift(0.75,1.0) You can separate the different groups by soe distance, but the bars touch each other:

On the other hand, using the other extreme autoscaleBarWidthAndSHift(1.0,0.9) there is no grouping of the bars, but they have a slight distance between each other.

Finally the default parameters autoscaleBarWidthAndSHift(0.75,0.9) will lead to a separation of the bars AND a grouping:

◆ autoscaleBarWidthAndShiftSeparatedGroups

void JKQTPBarGraphBase::autoscaleBarWidthAndShiftSeparatedGroups ( double groupWidth = 0.75 )

slot

equivalent to autoscaleBarWidthAndShift(groupWidth,0.9);

The default parameters autoscaleBarWidthAndShiftSeparatedGroups(0.75) will lead to a separation of the bars AND a grouping:

On the other hand, using autoscaleBarWidthAndShiftSeparatedGroups(1.0) there is no grouping of the bars, but they have a slight distance between each other.

◆ baselineStyle() [1/2]

JKQTPGraphLineStyleMixin & JKQTPBarGraphBase::baselineStyle ( )

if m_drawBaseline ==true then this style is used to draw the baseline

See also: baselineStyle() , setDrawBaseline() , m_drawBaseline

◆ baselineStyle() [2/2]

const JKQTPGraphLineStyleMixin & JKQTPBarGraphBase::baselineStyle ( ) const

if m_drawBaseline ==true then this style is used to draw the baseline

See also: baselineStyle() , setDrawBaseline() , m_drawBaseline

◆ considerForAutoscaling()

virtual bool JKQTPBarGraphBase::considerForAutoscaling ( JKQTPBarGraphBase * other ) const

protectedpure virtual

this function is used by autoscaleBarWidthAndShift() to determine whether a given graph shall be taken into account when autoscaling. Typically this returns true for all JKQTPBarGraphBase-derived objects with the same orientation (horizontal or vertical). For stacked graphs it excludes everything except the bottom of the stack

Implemented in JKQTPBarHorizontalGraph, and JKQTPBarVerticalGraph.

◆ constructFillBrushFunctor()

virtual FillBrushFunctor JKQTPBarGraphBase::constructFillBrushFunctor ( ) const

protectedvirtual

returns a FillBrushFunctor that is appropriate for the currently selected m_fillMode

◆ drawKeyMarker()

virtual void JKQTPBarGraphBase::drawKeyMarker	(	JKQTPEnhancedPainter &	painter,
		const QRectF &	rect )

overridevirtual

plots a key marker inside the specified rectangle rect

Implements JKQTPPlotElement.

◆ fillStyleBelow() [1/2]

JKQTPGraphFillStyleMixin & JKQTPBarGraphBase::fillStyleBelow ( )

if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above

See also: fillStyleBelow() , setFillMode()

◆ fillStyleBelow() [2/2]

const JKQTPGraphFillStyleMixin & JKQTPBarGraphBase::fillStyleBelow ( ) const

if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above

See also: fillStyleBelow() , setFillMode()

◆ getBarHeightColumn()

int JKQTPBarGraphBase::getBarHeightColumn ( ) const

returns xColumn or yColumn, whichever is used for the height of the bars (depending on whether the barchart is vertical or horizontal

See also: getBarPositionColumn(), xColumn, yColumn

◆ getBarPositionColumn()

int JKQTPBarGraphBase::getBarPositionColumn ( ) const

returns xColumn or yColumn, whichever is used for the position of the bars (depending on whether the barchart is vertical or horizontal

See also: getBarHeightColumn(), xColumn, yColumn

◆ getDrawBaseline()

bool JKQTPBarGraphBase::getDrawBaseline ( ) const

indicates whether to draw a line with style m_baselineStyle at the baseline-value

setDrawBaseline(true);

setDrawBaseline(false);

See also: baselineStyle() , setDrawBaseline() , m_baselineStyle

◆ getFillBrushFunctor() [1/2]

FillBrushFunctor & JKQTPBarGraphBase::getFillBrushFunctor ( )

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ getFillBrushFunctor() [2/2]

const FillBrushFunctor & JKQTPBarGraphBase::getFillBrushFunctor ( ) const

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ getFillMode()

FillMode JKQTPBarGraphBase::getFillMode ( ) const

specifies how the area of the graph is filles

Note: If any fill style other than FillStyle::SingleFill is used, the peroperty m_lineColorDerivationModeForSpecialFill is used to derive the color of the bars' outlines from the fill color.

See also: setFillMode(), getFillMode(), m_fillStyleBelow, m_fillBrushFunctor, m_lineColorDerivationModeForSpecialFill

◆ getKeyLabelColor()

virtual QColor JKQTPBarGraphBase::getKeyLabelColor ( ) const

overridevirtual

returns the color to be used for the key label

Implements JKQTPPlotElement.

◆ getLineColorDerivationModeForSpecialFill()

JKQTPColorDerivationMode JKQTPBarGraphBase::getLineColorDerivationModeForSpecialFill ( ) const

defines how to derive the line color in m_fillMode!=SingleFilling

See also: setLineColorDerivationModeForSpecialFill(), setFillMode(), getLineColorDerivationModeForSpecialFill(), FillMode

◆ getParentStackedMax()

virtual double JKQTPBarGraphBase::getParentStackedMax ( int index ) const

protectedvirtual

used to generate stacked plots: returns the upper boundary of the parent plot in a stack, for the index-th datapoint

Reimplemented in JKQTPBarHorizontalStackableGraph, and JKQTPBarVerticalStackableGraph.

◆ getPositionsMinMax()

bool JKQTPBarGraphBase::getPositionsMinMax	(	double &	mmin,
		double &	mmax,
		double &	smallestGreaterZero )

protected

get the maximum and minimum value of the box positions of the graph

The result is given in the two parameters which are call-by-reference parameters!

◆ getRectRadiusAtBaseline()

double JKQTPBarGraphBase::getRectRadiusAtBaseline ( ) const

corner radius (in pt) for bars at the "baseline" end

◆ getRectRadiusAtValue()

double JKQTPBarGraphBase::getRectRadiusAtValue ( ) const

corner radius (in pt) for bars at the "value" end

◆ getShift()

double JKQTPBarGraphBase::getShift ( ) const

the shift of the bargraphs, relative to the distance between the current and the next x-value

See the following graphic to understand this concept:

See also: setShift(), getShift(), setWidth(), getWidth(), autoscaleBarWidthAndShift(), autoscaleBarWidthAndShiftSeparatedGroups()

◆ getStackSeparation()

double JKQTPBarGraphBase::getStackSeparation ( ) const

separation (in pt) between two bars in a stack of bars

◆ getValuesMinMax()

bool JKQTPBarGraphBase::getValuesMinMax	(	double &	mmin,
		double &	mmax,
		double &	smallestGreaterZero )

protected

get the maximum and minimum value in the box-elongation (i.e. value) direction of the graph

The result is given in the two parameters which are call-by-reference parameters!

◆ getWidth()

double JKQTPBarGraphBase::getWidth ( ) const

the width of the bargraphs, relative to the distance between the current and the next x-value

See the following graphic to understand this concept:

Note: this parameter can be combined with shift !

See also: setWidth(), getWidth(), setShift(), getShift(), shift, autoscaleBarWidthAndShift(), autoscaleBarWidthAndShiftSeparatedGroups()

◆ hasStackParent()

virtual bool JKQTPBarGraphBase::hasStackParent ( ) const

protectedvirtual

returns true, if a stack parent is set (if available)

Reimplemented in JKQTPBarHorizontalStackableGraph, and JKQTPBarVerticalStackableGraph.

◆ setBarHeightColumn [1/2]

void JKQTPBarGraphBase::setBarHeightColumn ( int column )

slot

returns xColumn or yColumn, whichever is used for the height of the bars (depending on whether the barchart is vertical or horizontal

See also: getBarPositionColumn(), xColumn, yColumn

◆ setBarHeightColumn [2/2]

void JKQTPBarGraphBase::setBarHeightColumn ( size_t column )

slot

returns xColumn or yColumn, whichever is used for the height of the bars (depending on whether the barchart is vertical or horizontal

See also: getBarPositionColumn(), xColumn, yColumn

◆ setBarPositionColumn [1/2]

void JKQTPBarGraphBase::setBarPositionColumn ( int column )

slot

returns xColumn or yColumn, whichever is used for the position of the bars (depending on whether the barchart is vertical or horizontal

See also: getBarHeightColumn(), xColumn, yColumn

◆ setBarPositionColumn [2/2]

void JKQTPBarGraphBase::setBarPositionColumn ( size_t column )

slot

returns xColumn or yColumn, whichever is used for the position of the bars (depending on whether the barchart is vertical or horizontal

See also: getBarHeightColumn(), xColumn, yColumn

◆ setColor

virtual void JKQTPBarGraphBase::setColor ( QColor c )

virtualslot

set outline and fill color at the same time

See also: setFillColor_and_darkenedColor()

◆ setCustomDrawingFunctor [1/2]

void JKQTPBarGraphBase::setCustomDrawingFunctor ( const JKQTPBarGraphBase::CustomDrawingFunctor & f )

slot

this allows to provide custom drawing code for the bars. It is called for every visible bar if activated by setUseCustomDrawFunctor(true) .

Here is an example for a custom draw functor:

graph->setCustomDrawingFunctor(
  [](JKQTPEnhancedPainter& painter, const QRectF& bar_px, const QPointF& datapoint, Qt::Orientation orientation, JKQTPBarGraphBase* graph) {
    // draw the bar (if required), pen and brush are already set properly
    painter.drawRect(bar_px);
    // now we can add some decoration or replace the instruction above:
    // ........
  }
);
// enable usage of cutom draw functor
graph->setUseCustomDrawFunctor(true);

The result may look like this:

See also: CustomDrawingFunctor, m_useCustomDrawFunctor, setUseCustomDrawFunctor(), Example (JKQTPlotter): Barchart With Custom Draw Functor for a detailed example

◆ setCustomDrawingFunctor [2/2]

void JKQTPBarGraphBase::setCustomDrawingFunctor ( JKQTPBarGraphBase::CustomDrawingFunctor && f )

slot

this allows to provide custom drawing code for the bars. It is called for every visible bar if activated by setUseCustomDrawFunctor(true) .

Here is an example for a custom draw functor:

graph->setCustomDrawingFunctor(
  [](JKQTPEnhancedPainter& painter, const QRectF& bar_px, const QPointF& datapoint, Qt::Orientation orientation, JKQTPBarGraphBase* graph) {
    // draw the bar (if required), pen and brush are already set properly
    painter.drawRect(bar_px);
    // now we can add some decoration or replace the instruction above:
    // ........
  }
);
// enable usage of cutom draw functor
graph->setUseCustomDrawFunctor(true);

The result may look like this:

See also: CustomDrawingFunctor, m_useCustomDrawFunctor, setUseCustomDrawFunctor(), Example (JKQTPlotter): Barchart With Custom Draw Functor for a detailed example

◆ setDrawBaseline

void JKQTPBarGraphBase::setDrawBaseline ( bool __value )

slot

indicates whether to draw a line with style m_baselineStyle at the baseline-value

setDrawBaseline(true);

setDrawBaseline(false);

See also: baselineStyle() , setDrawBaseline() , m_baselineStyle

◆ setFillBrushFunctor [1/4]

void JKQTPBarGraphBase::setFillBrushFunctor ( const JKQTPBarGraphBase::FillBrushFunctor & f )

slot

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ setFillBrushFunctor [2/4]

void JKQTPBarGraphBase::setFillBrushFunctor ( const JKQTPBarGraphBase::SimpleFillBrushFunctor & f )

slot

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ setFillBrushFunctor [3/4]

void JKQTPBarGraphBase::setFillBrushFunctor ( JKQTPBarGraphBase::FillBrushFunctor && f )

slot

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ setFillBrushFunctor [4/4]

void JKQTPBarGraphBase::setFillBrushFunctor ( JKQTPBarGraphBase::SimpleFillBrushFunctor && f )

slot

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ setFillColor_and_darkenedColor()

void JKQTPBarGraphBase::setFillColor_and_darkenedColor	(	QColor	fill,
		int	colorDarker = 200 )

sets the fill color and the color together, where fillColor is set to fill and the line-color is set to fill.darker(colorDarker)

See also: setColor()

◆ setFillMode

void JKQTPBarGraphBase::setFillMode ( JKQTPBarGraphBase::FillMode mode )

slot

specifies how the area of the graph is filles

Note: If any fill style other than FillStyle::SingleFill is used, the peroperty m_lineColorDerivationModeForSpecialFill is used to derive the color of the bars' outlines from the fill color.

See also: setFillMode(), getFillMode(), m_fillStyleBelow, m_fillBrushFunctor, m_lineColorDerivationModeForSpecialFill

◆ setLineColorDerivationModeForSpecialFill

void JKQTPBarGraphBase::setLineColorDerivationModeForSpecialFill ( const JKQTPColorDerivationMode & m )

slot

defines how to derive the line color in m_fillMode!=SingleFilling

See also: setLineColorDerivationModeForSpecialFill(), setFillMode(), getLineColorDerivationModeForSpecialFill(), FillMode

◆ setRectRadius [1/2]

void JKQTPBarGraphBase::setRectRadius ( double all )

slot

sets the corner radius of the bars for both ends

◆ setRectRadius [2/2]

void JKQTPBarGraphBase::setRectRadius	(	double	atValue,
		double	atBaseline )

slot

sets the corner radius of the bars for both ends

◆ setRectRadiusAtBaseline

void JKQTPBarGraphBase::setRectRadiusAtBaseline ( double __value )

slot

corner radius (in pt) for bars at the "baseline" end

◆ setRectRadiusAtValue

void JKQTPBarGraphBase::setRectRadiusAtValue ( double __value )

slot

corner radius (in pt) for bars at the "value" end

◆ setShift

void JKQTPBarGraphBase::setShift ( double __value )

slot

the shift of the bargraphs, relative to the distance between the current and the next x-value

See the following graphic to understand this concept:

See also: setShift(), getShift(), setWidth(), getWidth(), autoscaleBarWidthAndShift(), autoscaleBarWidthAndShiftSeparatedGroups()

◆ setStackSeparation

void JKQTPBarGraphBase::setStackSeparation ( double __value )

slot

separation (in pt) between two bars in a stack of bars

◆ setUseCustomDrawFunctor

void JKQTPBarGraphBase::setUseCustomDrawFunctor ( bool enabled )

slot

enabled custom drawing by m_customDrawFunctor

See also: m_customDrawFunctor

◆ setWidth

void JKQTPBarGraphBase::setWidth ( double __value )

slot

the width of the bargraphs, relative to the distance between the current and the next x-value

See the following graphic to understand this concept:

Note: this parameter can be combined with shift !

See also: setWidth(), getWidth(), setShift(), getShift(), shift, autoscaleBarWidthAndShift(), autoscaleBarWidthAndShiftSeparatedGroups()

◆ usesCustomDrawFunctor()

bool JKQTPBarGraphBase::usesCustomDrawFunctor ( ) const

enabled custom drawing by m_customDrawFunctor

See also: m_customDrawFunctor

Member Data Documentation

◆ m_baselineStyle

JKQTPGraphLineStyleMixin JKQTPBarGraphBase::m_baselineStyle

protected

if m_drawBaseline ==true then this style is used to draw the baseline

See also: baselineStyle() , setDrawBaseline() , m_drawBaseline

◆ m_customDrawFunctor

CustomDrawingFunctor JKQTPBarGraphBase::m_customDrawFunctor

protected

this allows to provide custom drawing code for the bars. It is called for every visible bar if activated by setUseCustomDrawFunctor(true) .

Here is an example for a custom draw functor:

graph->setCustomDrawingFunctor(
  [](JKQTPEnhancedPainter& painter, const QRectF& bar_px, const QPointF& datapoint, Qt::Orientation orientation, JKQTPBarGraphBase* graph) {
    // draw the bar (if required), pen and brush are already set properly
    painter.drawRect(bar_px);
    // now we can add some decoration or replace the instruction above:
    // ........
  }
);
// enable usage of cutom draw functor
graph->setUseCustomDrawFunctor(true);

The result may look like this:

See also: CustomDrawingFunctor, m_useCustomDrawFunctor, setUseCustomDrawFunctor(), Example (JKQTPlotter): Barchart With Custom Draw Functor for a detailed example

◆ m_drawBaseline

bool JKQTPBarGraphBase::m_drawBaseline

protected

indicates whether to draw a line with style m_baselineStyle at the baseline-value

setDrawBaseline(true);

setDrawBaseline(false);

See also: baselineStyle() , setDrawBaseline() , m_baselineStyle

◆ m_fillBrushFunctor

FillBrushFunctor JKQTPBarGraphBase::m_fillBrushFunctor

protected

functor, used to determine the color in m_fillMode==FunctorFilling

If you use FillMode::FunctorFilling you can specify the fill style by a functor, e.g.

graph->setFillMode(JKQTPBarGraphBase::FillMode::FunctorFilling);
graph->setFillBrushFunctor(
  [](double key, double value) {
    return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
  }
);

The result may look like this:

See also: setFillBrushFunctor(), getFillBrushFunctor(), m_fillMode

◆ m_fillMode

FillMode JKQTPBarGraphBase::m_fillMode

protected

specifies how the area of the graph is filles

Note: If any fill style other than FillStyle::SingleFill is used, the peroperty m_lineColorDerivationModeForSpecialFill is used to derive the color of the bars' outlines from the fill color.

See also: setFillMode(), getFillMode(), m_fillStyleBelow, m_fillBrushFunctor, m_lineColorDerivationModeForSpecialFill

◆ m_fillStyleBelow

JKQTPGraphFillStyleMixin JKQTPBarGraphBase::m_fillStyleBelow

protected

if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above

See also: fillStyleBelow() , setFillMode()

◆ m_lineColorDerivationModeForSpecialFill

JKQTPColorDerivationMode JKQTPBarGraphBase::m_lineColorDerivationModeForSpecialFill

protected

defines how to derive the line color in m_fillMode!=SingleFilling

See also: setLineColorDerivationModeForSpecialFill(), setFillMode(), getLineColorDerivationModeForSpecialFill(), FillMode

◆ m_stackSeparation

double JKQTPBarGraphBase::m_stackSeparation

protected

separation (in pt) between two bars in a stack of bars

◆ m_useCustomDrawFunctor

bool JKQTPBarGraphBase::m_useCustomDrawFunctor

protected

enabled custom drawing by m_customDrawFunctor

See also: m_customDrawFunctor

◆ rectRadiusAtBaseline

double JKQTPBarGraphBase::rectRadiusAtBaseline

protected

corner radius (in pt) for bars at the "baseline" end

◆ rectRadiusAtValue

double JKQTPBarGraphBase::rectRadiusAtValue

protected

corner radius (in pt) for bars at the "value" end

◆ shift

double JKQTPBarGraphBase::shift

protected

the shift of the bargraphs, relative to the distance between the current and the next x-value

See the following graphic to understand this concept:

See also: setShift(), getShift(), setWidth(), getWidth(), autoscaleBarWidthAndShift(), autoscaleBarWidthAndShiftSeparatedGroups()

◆ width

double JKQTPBarGraphBase::width

protected

the width of the bargraphs, relative to the distance between the current and the next x-value

See the following graphic to understand this concept:

Note: this parameter can be combined with shift !

See also: setWidth(), getWidth(), setShift(), getShift(), shift, autoscaleBarWidthAndShift(), autoscaleBarWidthAndShiftSeparatedGroups()

The documentation for this class was generated from the following file:

jkqtpbarchartbase.h

Classes

Public Types

Public Slots

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

several JKQTPBarGraphBase side-by-side

Basic Bargraph Styling

Data-Dependent Styling of Bargraphs

Custom Bargraph Drawing

Member Typedef Documentation

◆ CustomDrawingFunctor

◆ FillBrushFunctor

◆ SimpleFillBrushFunctor

Member Enumeration Documentation

◆ FillMode

Constructor & Destructor Documentation

◆ JKQTPBarGraphBase() [1/2]

◆ JKQTPBarGraphBase() [2/2]

Member Function Documentation

◆ autoscaleBarWidthAndShift

◆ autoscaleBarWidthAndShiftSeparatedGroups

◆ baselineStyle() [1/2]

◆ baselineStyle() [2/2]

◆ considerForAutoscaling()

◆ constructFillBrushFunctor()

◆ drawKeyMarker()

◆ fillStyleBelow() [1/2]

◆ fillStyleBelow() [2/2]

◆ getBarHeightColumn()

◆ getBarPositionColumn()

◆ getDrawBaseline()

◆ getFillBrushFunctor() [1/2]

◆ getFillBrushFunctor() [2/2]

◆ getFillMode()

◆ getKeyLabelColor()

◆ getLineColorDerivationModeForSpecialFill()

◆ getParentStackedMax()

◆ getPositionsMinMax()

◆ getRectRadiusAtBaseline()

◆ getRectRadiusAtValue()

◆ getShift()

◆ getStackSeparation()

◆ getValuesMinMax()

◆ getWidth()

◆ hasStackParent()

◆ setBarHeightColumn [1/2]

◆ setBarHeightColumn [2/2]

◆ setBarPositionColumn [1/2]

◆ setBarPositionColumn [2/2]

◆ setColor

◆ setCustomDrawingFunctor [1/2]

◆ setCustomDrawingFunctor [2/2]

◆ setDrawBaseline

◆ setFillBrushFunctor [1/4]

◆ setFillBrushFunctor [2/4]

◆ setFillBrushFunctor [3/4]

◆ setFillBrushFunctor [4/4]

◆ setFillColor_and_darkenedColor()

◆ setFillMode

◆ setLineColorDerivationModeForSpecialFill

◆ setRectRadius [1/2]

◆ setRectRadius [2/2]

◆ setRectRadiusAtBaseline

◆ setRectRadiusAtValue

◆ setShift

◆ setStackSeparation

◆ setUseCustomDrawFunctor

◆ setWidth

◆ usesCustomDrawFunctor()

Member Data Documentation

◆ m_baselineStyle

◆ m_customDrawFunctor

◆ m_drawBaseline

◆ m_fillBrushFunctor

◆ m_fillMode

◆ m_fillStyleBelow

◆ m_lineColorDerivationModeForSpecialFill