This class draws an Open-High-Low-Close (OHLC) or candle-stick graph typically representing financial data. More...

#include <jkqtpfinancial.h>

Inheritance diagram for JKQTPFinancialGraph:

Collaboration diagram for JKQTPFinancialGraph:

Public Types
enum	FinancialGraphType { CandleStick , OHLC }
	types of financial graphs that can be drawn by this class More...

Public Types inherited from JKQTPXGraph
enum	DataSortOrder { Unsorted =0 , SortedX =1 }
	specifies how to sort the data in a JKQTPXGraph 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	autoscaleBoxWidthAndShift (double maxWidth=0.8, double shrinkFactor=0.8)
	finds all financial charts of the same orientation and determines width and shift, so they stand side by side

void	autoscaleBoxWidthAndShiftSeparatedGroups (double groupWidth=0.65)
	equivalent to `autoscaleBoxWidthAndShift`(groupWidth,0.8);

void	setCandlestickOneColor (QColor cLine)
	sets graphType = FinancialGraphType::CandleStick and sets one color cLine for positive and negative items, where positive items are unfilled and negative items are filled

void	setCandlestickTwoColor (QColor cPositive, QColor cNegative)
	sets graphType = FinancialGraphType::CandleStick and sets the positive and negative color (for fill and line equal!)

void	setCandlestickTwoColor (QColor cPositive, QColor cNegative, QColor lineCOlor)
	sets graphType = FinancialGraphType::CandleStick and sets the positive and negative fill color and a single line-color

void	setCloseColumn (int __value)
	column for the "Close" value of the financial graph

void	setCloseColumn (size_t __value)
	column for the "Close" value of the financial graph

virtual void	setColor (QColor cPositive, QColor cNegative)
	set outline and fill color at the same time, for both positive and negative boxes

virtual void	setColor (QColor linePositive, QColor fillPositive, QColor lineNegative, QColor fillNegative)
	set outline and fill color at the same time, for both positive and negative boxes

void	setGraphType (FinancialGraphType __value)
	type of the financial graph (OHLC or candle-stick)

void	setHighColumn (int __value)
	column for the "High" value of the financial graph

void	setHighColumn (size_t __value)
	column for the "High" value of the financial graph

void	setLowColumn (int __value)
	column for the "Low" value of the financial graph

void	setLowColumn (size_t __value)
	column for the "Low" value of the financial graph

void	setOHLCTwoColor (QColor cPositive, QColor cNegative)
	sets graphType = FinancialGraphType::OHLC and sets the positive and negative color (for fill and line equal!)

void	setOpenColumn (int __value)
	column for the "Open" value of the financial graph

void	setOpenColumn (size_t __value)
	column for the "Open" value of the financial graph

void	setShift (double __value)
	the shift of the boxes, relative to the distance between the current and the next x-value

void	setWidth (double __value)
	the width of the boxes, relative to the distance between the current and the next x-value

Public Slots inherited from JKQTPXGraph
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() )

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

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
	JKQTPFinancialGraph (JKQTBasePlotter *parent=nullptr)
	class constructor

	JKQTPFinancialGraph (JKQTPlotter *parent)
	class constructor

virtual void	draw (JKQTPEnhancedPainter &painter) override
	plots the graph to the plotter object specified as parent

virtual void	drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
	plots a key marker inside the specified rectangle rect

JKQTPGraphFillStyleMixin &	fillStyleNegative ()
	fill style for negative items (close<open)

const JKQTPGraphFillStyleMixin &	fillStyleNegative () const
	fill style for negative items (close<open)

JKQTPGraphFillStyleMixin &	fillStylePositive ()
	fill style for positive items (close>open)

const JKQTPGraphFillStyleMixin &	fillStylePositive () const
	fill style for positive items (close>open)

int	getCloseColumn () const
	column for the "Close" value of the financial graph

FinancialGraphType	getGraphType () const
	type of the financial graph (OHLC or candle-stick)

int	getHighColumn () const
	column for the "High" value of the financial graph

virtual bool	getIndexRange (int &imin, int &imax) const override
	determines the range of row indexes available in the data columns of this graph

virtual QColor	getKeyLabelColor () const override
	returns the color to be used for the key label

int	getLowColumn () const
	column for the "Low" value of the financial graph

int	getOpenColumn () const
	column for the "Open" value of the financial graph

double	getShift () const
	the shift of the boxes, relative to the distance between the current and the next x-value

double	getWidth () const
	the width of the boxes, relative to the distance between the current and the next x-value

virtual bool	getYMinMax (double &miny, double &maxy, double &smallestGreaterZero) override
	get the maximum and minimum y-value of the graph

JKQTPGraphLineStyleMixin &	lineStyleNegative ()
	fill style for negative items (close<open)

const JKQTPGraphLineStyleMixin &	lineStyleNegative () const
	fill style for negative items (close<open)

JKQTPGraphLineStyleMixin &	lineStylePositive ()
	fill style for positive items (close>open)

const JKQTPGraphLineStyleMixin &	lineStylePositive () const
	fill style for positive items (close>open)

virtual bool	usesColumn (int column) const override
	returns `true` if the given column is used by the graph

Public Member Functions inherited from JKQTPXGraph
	JKQTPXGraph (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() )

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

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	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

virtual double	hitTest (const QPointF &posSystem, QPointF closestSpotSystem=nullptr, QString label=nullptr, HitTestMode mode=HitTestXY) const
	returns the closest distance of the plot element to the (screen pixel) position pos, or `NAN`

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

Static Public Member Functions
static void	clearColorAssignStore ()

Protected Member Functions
virtual bool	considerForAutoscaling (JKQTPFinancialGraph *other) const
	this function is used by autoscaleBoxWidthAndShift() to determine whether a given graph shall be taken into account when autoscaling. Typically this returns `true` for all JKQTPFinancialGraph-derved objects with the same orientation (horizontal or vertical, i.e. currently all)

Protected Member Functions inherited from JKQTPXGraph
int	getDataIndex (int i) const
	returns the index of the i-th datapoint (where i is an index into the SORTED datapoints)

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
JKQTPGraphFillStyleMixin	m_fillStyleNegative
	fill style for negative items (close<open)

JKQTPGraphFillStyleMixin	m_fillStylePositive
	fill style for positive items (close>open)

JKQTPGraphLineStyleMixin	m_lineStyleNegative
	fill style for negative items (close<open)

JKQTPGraphLineStyleMixin	m_lineStylePositive
	fill style for positive items (close>open)

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

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

Protected Attributes inherited from JKQTPXGraph
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

Static Protected Attributes
static QSet< JKQTBasePlotter * >	parentsAlreadySeen

Properties
int	closeColumn
	column for the "Close" value of the financial graph

FinancialGraphType	graphType
	type of the financial graph (OHLC or candle-stick)

int	highColumn
	column for the "High" value of the financial graph

int	lowColumn
	column for the "Low" value of the financial graph

int	openColumn
	column for the "Open" value of the financial graph

Properties inherited from JKQTPXGraph
DataSortOrder	sortData
	if `!=Unsorted`, the data is sorted before plotting

int	xColumn
	the column that contains the x-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

Detailed Description

This class draws an Open-High-Low-Close (OHLC) or candle-stick graph typically representing financial data.

This graph draws either candlstick charts:

or Open-High-Low-Close (OHLC) charts (depending on what you set in setGraphType() ).

Here is an example graph showcasing both variants:

See also: For details on the graph types see https://en.wikipedia.org/wiki/Candlestick_chart and https://en.wikipedia.org/wiki/Open-high-low-close_chart; JKQTPXGraph

Styling the Financial Graphs

You can control the type of graph and it's appearance with these functions (example images are in the documentation of the functions):

For fine-tuning, you can access the line- and fill-styles for positiove (close>open) and negative (close<open) items separately via:

Note that the width of the single elements for each x-value is automatically from the distance to the next neighbours. Here set parameter width (setWidth(), getWidth() ) is employed. It sets the relative amount of space that an element occupies in its part of the graph. Typically the default width is 0.8 (or 80%).

Several Financial Graphs side-by-side

In case you want to display several of these graphs in the same plot, you can make them appear side-by-side, even if they all cover the same x-values and would thus be draw atop each other. We apply the same principles that were used for barcharts in JKQTPBarGraphBase and add a shift-parameter (setShift() ) that shifts each element in the available space:

For example for two financial graph elements per x-value one would set:

*        width=0.4
*        shift=-0.5 / +0.5
*

Two functions are provided (JKQTPFinancialGraph::autoscaleBoxWidthAndShift(), JKQTPFinancialGraph::autoscaleBoxWidthAndShiftSeparatedGroups() ) that can be applied to any JKQTPFinancialGraph in the plot and will calculate all JKQTPFinancialGraphs' shift and width parameter in such a way that the graphs appear tidied up into groups by x-value. With these functions you don't have to calculate the shift and width values by hand! A call always only affects the JKQTPFinancialGraph in the plot with the same orientation (vertical or horizontal).

Member Enumeration Documentation

◆ FinancialGraphType

enum JKQTPFinancialGraph::FinancialGraphType

types of financial graphs that can be drawn by this class

Enumerator
CandleStick	candlestick graphs
OHLC	OHLC (Open-High-Low-Close) graphs.

Constructor & Destructor Documentation

◆ JKQTPFinancialGraph() [1/2]

JKQTPFinancialGraph::JKQTPFinancialGraph ( JKQTBasePlotter * parent = nullptr )

class constructor

◆ JKQTPFinancialGraph() [2/2]

JKQTPFinancialGraph::JKQTPFinancialGraph ( JKQTPlotter * parent )

class constructor

Member Function Documentation

◆ autoscaleBoxWidthAndShift

virtual void JKQTPFinancialGraph::autoscaleBoxWidthAndShift	(	double	maxWidth = `0.8`,
		double	shrinkFactor = `0.8`
	)

virtualslot

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

Parameters

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

Note: This function will scale ALL graphs of the parent plot, which were derived from JKQTPFinancialGraph, that match in orientation (currently all).

◆ autoscaleBoxWidthAndShiftSeparatedGroups

void JKQTPFinancialGraph::autoscaleBoxWidthAndShiftSeparatedGroups ( double groupWidth = 0.65 )

slot

equivalent to autoscaleBoxWidthAndShift(groupWidth,0.8);

◆ clearColorAssignStore()

static void JKQTPFinancialGraph::clearColorAssignStore ( )

static

◆ considerForAutoscaling()

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

protectedvirtual

this function is used by autoscaleBoxWidthAndShift() to determine whether a given graph shall be taken into account when autoscaling. Typically this returns true for all JKQTPFinancialGraph-derved objects with the same orientation (horizontal or vertical, i.e. currently all)

◆ draw()

virtual void JKQTPFinancialGraph::draw ( JKQTPEnhancedPainter & painter )

overridevirtual

plots the graph to the plotter object specified as parent

Implements JKQTPPlotElement.

◆ drawKeyMarker()

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

overridevirtual

plots a key marker inside the specified rectangle rect

Implements JKQTPPlotElement.

◆ fillStyleNegative() [1/2]

JKQTPGraphFillStyleMixin & JKQTPFinancialGraph::fillStyleNegative ( )

fill style for negative items (close<open)

See also: fillStyleNegative()

◆ fillStyleNegative() [2/2]

const JKQTPGraphFillStyleMixin & JKQTPFinancialGraph::fillStyleNegative ( ) const

fill style for negative items (close<open)

See also: fillStyleNegative()

◆ fillStylePositive() [1/2]

JKQTPGraphFillStyleMixin & JKQTPFinancialGraph::fillStylePositive ( )

fill style for positive items (close>open)

See also: fillStylePositive()

◆ fillStylePositive() [2/2]

const JKQTPGraphFillStyleMixin & JKQTPFinancialGraph::fillStylePositive ( ) const

fill style for positive items (close>open)

See also: fillStylePositive()

◆ getCloseColumn()

int JKQTPFinancialGraph::getCloseColumn ( ) const

column for the "Close" value of the financial graph

See also: setCloseColumn(), getCloseColumn()

◆ getGraphType()

FinancialGraphType JKQTPFinancialGraph::getGraphType ( ) const

type of the financial graph (OHLC or candle-stick)

See also: setGraphType(), getGraphType(), FinancialGraphType

◆ getHighColumn()

int JKQTPFinancialGraph::getHighColumn ( ) const

column for the "High" value of the financial graph

See also: setHighColumn(), getHighColumn()

◆ getIndexRange()

virtual bool JKQTPFinancialGraph::getIndexRange	(	int &	imin,
		int &	imax
	)		const

overridevirtual

determines the range of row indexes available in the data columns of this graph

Parameters

[out]	imin	first usable row-index
[out]	imax	last usable row-index

Returns: true on success and false if the information is not available

Reimplemented from JKQTPXGraph.

◆ getKeyLabelColor()

virtual QColor JKQTPFinancialGraph::getKeyLabelColor ( ) const

overridevirtual

returns the color to be used for the key label

Implements JKQTPPlotElement.

◆ getLowColumn()

int JKQTPFinancialGraph::getLowColumn ( ) const

column for the "Low" value of the financial graph

See also: setLowColumn(), getLowColumn()

◆ getOpenColumn()

int JKQTPFinancialGraph::getOpenColumn ( ) const

column for the "Open" value of the financial graph

See also: setOpenColumn(), getOpenColumn()

◆ getShift()

double JKQTPFinancialGraph::getShift ( ) const

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

See the following graphic to understand this concept (same principle as described in the JKQTPBarGraphBase documentation):

◆ getWidth()

double JKQTPFinancialGraph::getWidth ( ) const

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

See the following graphic to understand this concept (same principle as described in the JKQTPBarGraphBase documentation):

◆ getYMinMax()

virtual bool JKQTPFinancialGraph::getYMinMax	(	double &	miny,
		double &	maxy,
		double &	smallestGreaterZero
	)

overridevirtual

get the maximum and minimum y-value of the graph

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

Parameters

[out]	miny	minimal y-value used in the graph
[out]	maxy	maximal y-value used in the graph
[out]	smallestGreaterZero	the smalles y-value in the graph, which is larger than 0 (this is used in auto-sizing for logarithmic axes)

Returns: true on success, i.e. if there were datapoints in the plot, or false on failure (e.g. when the graph is empty)

Implements JKQTPPlotElement.

◆ lineStyleNegative() [1/2]

JKQTPGraphLineStyleMixin & JKQTPFinancialGraph::lineStyleNegative ( )

fill style for negative items (close<open)

See also: lineStyleNegative()

◆ lineStyleNegative() [2/2]

const JKQTPGraphLineStyleMixin & JKQTPFinancialGraph::lineStyleNegative ( ) const

fill style for negative items (close<open)

See also: lineStyleNegative()

◆ lineStylePositive() [1/2]

JKQTPGraphLineStyleMixin & JKQTPFinancialGraph::lineStylePositive ( )

fill style for positive items (close>open)

See also: lineStylePositive()

◆ lineStylePositive() [2/2]

const JKQTPGraphLineStyleMixin & JKQTPFinancialGraph::lineStylePositive ( ) const

fill style for positive items (close>open)

See also: lineStylePositive()

◆ setCandlestickOneColor

void JKQTPFinancialGraph::setCandlestickOneColor ( QColor cLine )

slot

sets graphType = FinancialGraphType::CandleStick and sets one color cLine for positive and negative items, where positive items are unfilled and negative items are filled

Parameters

cLine line-color for all items and also fill-color for positive items (close>open), negative items are unfilled

Here is an example output for setCandlestickOneColor(QColor("black")):

◆ setCandlestickTwoColor [1/2]

void JKQTPFinancialGraph::setCandlestickTwoColor	(	QColor	cPositive,
		QColor	cNegative
	)

slot

sets graphType = FinancialGraphType::CandleStick and sets the positive and negative color (for fill and line equal!)

Parameters

cPositive	color for positive items (close>open)
cNegative	color for negative items (close<open)

Here is an example output for setCandlestickTwoColor(QColor("blue"), QColor("orange")):

◆ setCandlestickTwoColor [2/2]

void JKQTPFinancialGraph::setCandlestickTwoColor	(	QColor	cPositive,
		QColor	cNegative,
		QColor	lineCOlor
	)

slot

sets graphType = FinancialGraphType::CandleStick and sets the positive and negative fill color and a single line-color

Parameters

cPositive	color for fill of positive items (close>open)
cNegative	color for fill of negative items (close<open)

Here is an example output for setCandlestickTwoColor(QColor("green"), QColor("red"), QColor("black")):

◆ setCloseColumn [1/2]

void JKQTPFinancialGraph::setCloseColumn ( int __value )

slot

column for the "Close" value of the financial graph

See also: setCloseColumn(), getCloseColumn()

◆ setCloseColumn [2/2]

void JKQTPFinancialGraph::setCloseColumn ( size_t __value )

slot

column for the "Close" value of the financial graph

See also: setCloseColumn(), getCloseColumn()

◆ setColor [1/2]

virtual void JKQTPFinancialGraph::setColor	(	QColor	cPositive,
		QColor	cNegative
	)

virtualslot

set outline and fill color at the same time, for both positive and negative boxes

Parameters

cPositive	color for positive items (close>open)
cNegative	color for negative items (close<open)

◆ setColor [2/2]

virtual void JKQTPFinancialGraph::setColor	(	QColor	linePositive,
		QColor	fillPositive,
		QColor	lineNegative,
		QColor	fillNegative
	)

virtualslot

set outline and fill color at the same time, for both positive and negative boxes

Parameters

linePositive	line-color for positive items (close>open)
fillPositive	fill-color for positive items (close>open)
lineNegative	line-color for negative items (close<open)
fillNegative	fill-color for negative items (close<open)

◆ setGraphType

void JKQTPFinancialGraph::setGraphType ( FinancialGraphType __value )

slot

type of the financial graph (OHLC or candle-stick)

See also: setGraphType(), getGraphType(), FinancialGraphType

◆ setHighColumn [1/2]

void JKQTPFinancialGraph::setHighColumn ( int __value )

slot

column for the "High" value of the financial graph

See also: setHighColumn(), getHighColumn()

◆ setHighColumn [2/2]

void JKQTPFinancialGraph::setHighColumn ( size_t __value )

slot

column for the "High" value of the financial graph

See also: setHighColumn(), getHighColumn()

◆ setLowColumn [1/2]

void JKQTPFinancialGraph::setLowColumn ( int __value )

slot

column for the "Low" value of the financial graph

See also: setLowColumn(), getLowColumn()

◆ setLowColumn [2/2]

void JKQTPFinancialGraph::setLowColumn ( size_t __value )

slot

column for the "Low" value of the financial graph

See also: setLowColumn(), getLowColumn()

◆ setOHLCTwoColor

void JKQTPFinancialGraph::setOHLCTwoColor	(	QColor	cPositive,
		QColor	cNegative
	)

slot

sets graphType = FinancialGraphType::OHLC and sets the positive and negative color (for fill and line equal!)

Parameters

cPositive	color for positive items (close>open)
cNegative	color for negative items (close<open)

Here is an example output for setOHLCTwoColor(QColor("darkblue"), QColor("darkorange")):

◆ setOpenColumn [1/2]

void JKQTPFinancialGraph::setOpenColumn ( int __value )

slot

column for the "Open" value of the financial graph

See also: setOpenColumn(), getOpenColumn()

◆ setOpenColumn [2/2]

void JKQTPFinancialGraph::setOpenColumn ( size_t __value )

slot

column for the "Open" value of the financial graph

See also: setOpenColumn(), getOpenColumn()

◆ setShift

void JKQTPFinancialGraph::setShift ( double __value )

slot

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

See the following graphic to understand this concept (same principle as described in the JKQTPBarGraphBase documentation):

◆ setWidth

void JKQTPFinancialGraph::setWidth ( double __value )

slot

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

See the following graphic to understand this concept (same principle as described in the JKQTPBarGraphBase documentation):

◆ usesColumn()

virtual bool JKQTPFinancialGraph::usesColumn ( int column ) const

overridevirtual

returns true if the given column is used by the graph

This virtual function indicates whether a given column is used by this graph. Override this function in your derived graphs to indicate to JKQTPlotter / JKQTBasePlotter , which columns from the internal JKQTPDatastore are actually used. This information can be used e.g. for graph-specific data-export.

Reimplemented from JKQTPXGraph.

Member Data Documentation

◆ m_fillStyleNegative

JKQTPGraphFillStyleMixin JKQTPFinancialGraph::m_fillStyleNegative

protected

fill style for negative items (close<open)

See also: fillStyleNegative()

◆ m_fillStylePositive

JKQTPGraphFillStyleMixin JKQTPFinancialGraph::m_fillStylePositive

protected

fill style for positive items (close>open)

See also: fillStylePositive()

◆ m_lineStyleNegative

JKQTPGraphLineStyleMixin JKQTPFinancialGraph::m_lineStyleNegative

protected

fill style for negative items (close<open)

See also: lineStyleNegative()

◆ m_lineStylePositive

JKQTPGraphLineStyleMixin JKQTPFinancialGraph::m_lineStylePositive

protected

fill style for positive items (close>open)

See also: lineStylePositive()

◆ parentsAlreadySeen

QSet<JKQTBasePlotter*> JKQTPFinancialGraph::parentsAlreadySeen

staticprotected

◆ shift

double JKQTPFinancialGraph::shift

protected

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

See the following graphic to understand this concept (same principle as described in the JKQTPBarGraphBase documentation):

◆ width

double JKQTPFinancialGraph::width

protected

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

See the following graphic to understand this concept (same principle as described in the JKQTPBarGraphBase documentation):

Property Documentation

◆ closeColumn

int JKQTPFinancialGraph::closeColumn

readwrite

column for the "Close" value of the financial graph

See also: setCloseColumn(), getCloseColumn()

◆ graphType

FinancialGraphType JKQTPFinancialGraph::graphType

readwrite

type of the financial graph (OHLC or candle-stick)

See also: setGraphType(), getGraphType(), FinancialGraphType

◆ highColumn

int JKQTPFinancialGraph::highColumn

readwrite

column for the "High" value of the financial graph

See also: setHighColumn(), getHighColumn()

◆ lowColumn

int JKQTPFinancialGraph::lowColumn

readwrite

column for the "Low" value of the financial graph

See also: setLowColumn(), getLowColumn()

◆ openColumn

int JKQTPFinancialGraph::openColumn

readwrite

column for the "Open" value of the financial graph

See also: setOpenColumn(), getOpenColumn()

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

jkqtpfinancial.h

Public Types

Public Slots

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Properties

Detailed Description

Styling the Financial Graphs

Several Financial Graphs side-by-side

Member Enumeration Documentation

◆ FinancialGraphType

Constructor & Destructor Documentation

◆ JKQTPFinancialGraph() [1/2]

◆ JKQTPFinancialGraph() [2/2]

Member Function Documentation

◆ autoscaleBoxWidthAndShift

◆ autoscaleBoxWidthAndShiftSeparatedGroups

◆ clearColorAssignStore()

◆ considerForAutoscaling()

◆ draw()

◆ drawKeyMarker()

◆ fillStyleNegative() [1/2]

◆ fillStyleNegative() [2/2]

◆ fillStylePositive() [1/2]

◆ fillStylePositive() [2/2]

◆ getCloseColumn()

◆ getGraphType()

◆ getHighColumn()

◆ getIndexRange()

◆ getKeyLabelColor()

◆ getLowColumn()

◆ getOpenColumn()

◆ getShift()

◆ getWidth()

◆ getYMinMax()

◆ lineStyleNegative() [1/2]

◆ lineStyleNegative() [2/2]

◆ lineStylePositive() [1/2]

◆ lineStylePositive() [2/2]

◆ setCandlestickOneColor

◆ setCandlestickTwoColor [1/2]

◆ setCandlestickTwoColor [2/2]

◆ setCloseColumn [1/2]

◆ setCloseColumn [2/2]

◆ setColor [1/2]

◆ setColor [2/2]

◆ setGraphType

◆ setHighColumn [1/2]

◆ setHighColumn [2/2]

◆ setLowColumn [1/2]

◆ setLowColumn [2/2]

◆ setOHLCTwoColor

◆ setOpenColumn [1/2]

◆ setOpenColumn [2/2]

◆ setShift

◆ setWidth

◆ usesColumn()

Member Data Documentation

◆ m_fillStyleNegative

◆ m_fillStylePositive

◆ m_lineStyleNegative

◆ m_lineStylePositive

◆ parentsAlreadySeen

◆ shift

◆ width

Property Documentation

◆ closeColumn

◆ graphType

◆ highColumn

◆ lowColumn

◆ openColumn