JKQTPlotter trunk/v5.0.0
an extensive Qt5+Qt6 Plotter framework (including a feature-richt plotter widget, a speed-optimized, but limited variant and a LaTeX equation renderer!), written fully in C/C++ and without external dependencies
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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:
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Collaboration diagram for JKQTPBarGraphBase:
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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
 
JKQTPGraphLineStyleMixinbaselineStyle ()
 if m_drawBaseline ==true then this style is used to draw the baseline
 
const JKQTPGraphLineStyleMixinbaselineStyle () 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
 
JKQTPGraphFillStyleMixinfillStyleBelow ()
 if m_fillMode ==FillAboveAndBelowDifferently then this fill style is used below the baseline and the default fill style is used above
 
const JKQTPGraphFillStyleMixinfillStyleBelow () 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
 
FillBrushFunctorgetFillBrushFunctor ()
 functor, used to determine the color in m_fillMode==FunctorFilling
 
const FillBrushFunctorgetFillBrushFunctor () 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, ...)
 
JKQTBasePlottergetParent ()
 returns the parent painter class
 
const JKQTBasePlottergetParent () const
 returns the parent painter class
 
QString getTitle () const
 returns the the title of the plot

 
const JKQTPCoordinateAxisgetXAxis () 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 JKQTPCoordinateAxisgetYAxis () 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< HitTestLocationm_hitTestData
 dataset with graph-points and associated data from the function hitTest()
 
JKQTBasePlotterparent
 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:

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

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

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->setFillBrushFunctor(
[](double key, double value) -> QBrush {
return QBrush(QColor::fromHsvF(key/12.0, 1.0, 1.0));
}
);
@ FunctorFilling
a functor (use setFillBrushFunctor() to define one) is used to determine the fill color
Definition jkqtpbarchartbase.h:175

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
This is a base-class for all bar graphs with vertical or horizontal orientation (the orientation is i...
Definition jkqtpbarchartbase.h:152
void setUseCustomDrawFunctor(bool enabled)
enabled custom drawing by m_customDrawFunctor
this class extends the QPainter
Definition jkqtpenhancedpainter.h:33

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

◆ 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

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
maxWidththe maximum (relative) width, that all bars will span of the (doubled) inter-bar distance
shrinkFactorfactor, 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 JKQTPBarVerticalGraph, and JKQTPBarHorizontalGraph.

◆ 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->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->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 JKQTPBarVerticalStackableGraph, and JKQTPBarHorizontalStackableGraph.

◆ 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 JKQTPBarVerticalStackableGraph, and JKQTPBarHorizontalStackableGraph.

◆ 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

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

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->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->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->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->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

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->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: