QCandlestickSeries Class

The QCandlestickSeries class presents data as candlesticks. More...

Header:	#include <QCandlestickSeries>
Since:	Qt 5.8
Instantiated By:	CandlestickSeries
Inherits:	QAbstractSeries

• List of all members, including inherited members
• Obsolete members

Properties

bodyOutlineVisible : bool bodyWidth : qreal brush : QBrush capsVisible : bool capsWidth : qreal count : const int

decreasingColor : QColor increasingColor : QColor maximumColumnWidth : qreal minimumColumnWidth : qreal pen : QPen

• 5 properties inherited from QAbstractSeries
• 1 property inherited from QObject

Public Functions

	QCandlestickSeries(QObject *parent = nullptr)
virtual	~QCandlestickSeries()
bool	append(QCandlestickSet *set)
bool	append(const QList<QCandlestickSet *> &sets)
bool	bodyOutlineVisible() const
qreal	bodyWidth() const
QBrush	brush() const
bool	capsVisible() const
qreal	capsWidth() const
void	clear()
int	count() const
QColor	decreasingColor() const
QColor	increasingColor() const
bool	insert(int index, QCandlestickSet *set)
qreal	maximumColumnWidth() const
qreal	minimumColumnWidth() const
QPen	pen() const
bool	remove(QCandlestickSet *set)
bool	remove(const QList<QCandlestickSet *> &sets)
void	setBodyOutlineVisible(bool bodyOutlineVisible)
void	setBodyWidth(qreal bodyWidth)
void	setBrush(const QBrush &brush)
void	setCapsVisible(bool capsVisible)
void	setCapsWidth(qreal capsWidth)
void	setDecreasingColor(const QColor &decreasingColor)
void	setIncreasingColor(const QColor &increasingColor)
void	setMaximumColumnWidth(qreal maximumColumnWidth)
void	setMinimumColumnWidth(qreal minimumColumnWidth)
void	setPen(const QPen &pen)
QList<QCandlestickSet *>	sets() const
bool	take(QCandlestickSet *set)

Reimplemented Public Functions

virtual QAbstractSeries::SeriesType

type() const

• 15 public functions inherited from QAbstractSeries
• 31 public functions inherited from QObject

Signals

void	bodyOutlineVisibilityChanged()
void	bodyWidthChanged()
void	brushChanged()
void	candlestickSetsAdded(const QList<QCandlestickSet *> &sets)
void	candlestickSetsRemoved(const QList<QCandlestickSet *> &sets)
void	capsVisibilityChanged()
void	capsWidthChanged()
void	clicked(QCandlestickSet *set)
void	countChanged()
void	decreasingColorChanged()
void	doubleClicked(QCandlestickSet *set)
void	hovered(bool status, QCandlestickSet *set)
void	increasingColorChanged()
void	maximumColumnWidthChanged()
void	minimumColumnWidthChanged()
void	penChanged()
void	pressed(QCandlestickSet *set)
void	released(QCandlestickSet *set)

• 4 signals inherited from QAbstractSeries
• 2 signals inherited from QObject

Static Public Members

const QMetaObject

staticMetaObject

• 9 static public members inherited from QObject

Additional Inherited Members

• 1 public slot inherited from QObject
• 9 protected functions inherited from QObject

Detailed Description

The QCandlestickSeries class presents data as candlesticks.

This class acts as a container for single candlestick items. Each item is drawn to its own category when using QBarCategoryAxis. QDateTimeAxis and QValueAxis can be used as alternatives to QBarCategoryAxis. In this case, each candlestick item is drawn according to its timestamp value.

Note: The timestamps must be unique within a QCandlestickSeries. When using QBarCategoryAxis, only the first one of the candlestick items sharing a timestamp is drawn. If the chart includes multiple instances of QCandlestickSeries, items from different series sharing a timestamp are drawn to the same category. When using QValueAxis or QDateTimeAxis, candlestick items sharing a timestamp will overlap each other.

See the candlestick chart example to learn how to create a candlestick chart.

See also QCandlestickSet, QBarCategoryAxis, QDateTimeAxis, and QValueAxis.

Member Function Documentation

QCandlestickSeries::QCandlestickSeries(QObject *parent = nullptr)

Constructs an empty QCandlestickSeries. The parent is optional.

[virtual] QCandlestickSeries::~QCandlestickSeries()

Destroys the series. Removes the series from the chart.

bool QCandlestickSeries::append(QCandlestickSet *set)

Adds a single candlestick item specified by set to the series and takes ownership of it. If the item is null or it is already in the series, it is not appended. Returns true if appending succeeded, false otherwise.

bool QCandlestickSeries::append(const QList<QCandlestickSet *> &sets)

Adds a list of candlestick items specified by sets to the series and takes ownership of it. If any of the items are null, already belong to the series, or appear in the list more than once, nothing is appended. Returns true if all items were appended successfully, false otherwise.

[signal] void QCandlestickSeries::bodyOutlineVisibilityChanged()

This signal is emitted when the visibility of the candlestick item body outline changes.

Note: Notifier signal for property bodyOutlineVisible.

See also bodyOutlineVisible.

[signal] void QCandlestickSeries::bodyWidthChanged()

This signal is emitted when the candlestick item width changes.

Note: Notifier signal for property bodyWidth.

See also bodyWidth.

[signal] void QCandlestickSeries::brushChanged()

This signal is emitted when the candlestick item brush changes.

Note: Notifier signal for property brush.

See also brush.

[signal] void QCandlestickSeries::candlestickSetsAdded(const QList<QCandlestickSet *> &sets)

This signal is emitted when the candlestick items specified by sets are added to the series.

[signal] void QCandlestickSeries::candlestickSetsRemoved(const QList<QCandlestickSet *> &sets)

This signal is emitted when the candlestick items specified by sets are removed from the series.

[signal] void QCandlestickSeries::capsVisibilityChanged()

This signal is emitted when the visibility of the candlestick item caps changes.

Note: Notifier signal for property capsVisible.

See also capsVisible.

[signal] void QCandlestickSeries::capsWidthChanged()

This signal is emitted when the candlestick item caps width changes.

Note: Notifier signal for property capsWidth.

See also capsWidth.

void QCandlestickSeries::clear()

Removes all candlestick items from the series and permanently deletes them.

[signal] void QCandlestickSeries::clicked(QCandlestickSet *set)

This signal is emitted when the candlestick item specified by set is clicked on the chart.

int QCandlestickSeries::count() const

Returns the number of the candlestick items in the series.

Note: Getter function for property count.

[signal] void QCandlestickSeries::countChanged()

This signal is emitted when the number of candlestick items in the series changes.

Note: Notifier signal for property count.

See also count.

[signal] void QCandlestickSeries::decreasingColorChanged()

This signal is emitted when the candlestick item decreasing color changes.

Note: Notifier signal for property decreasingColor.

See also decreasingColor.

[signal] void QCandlestickSeries::doubleClicked(QCandlestickSet *set)

This signal is emitted when the candlestick item specified by set is double-clicked on the chart.

[signal] void QCandlestickSeries::hovered(bool status, QCandlestickSet *set)

This signal is emitted when a mouse is hovered over the candlestick item specified by set in a chart.

When the mouse moves over the item, status turns true, and when the mouse moves away again, it turns false.

[signal] void QCandlestickSeries::increasingColorChanged()

This signal is emitted when the candlestick item increasing color changes.

Note: Notifier signal for property increasingColor.

See also increasingColor.

bool QCandlestickSeries::insert(int index, QCandlestickSet *set)

Inserts the candlestick item specified by set to the series at the position specified by index. Takes ownership of the item. If the item is null or already belongs to the series, it is not inserted. Returns true if inserting succeeded, false otherwise.

[signal] void QCandlestickSeries::maximumColumnWidthChanged()

This signal is emitted when there is a change in the maximum column width of candlestick items.

Note: Notifier signal for property maximumColumnWidth.

See also maximumColumnWidth.

[signal] void QCandlestickSeries::minimumColumnWidthChanged()

This signal is emitted when there is a change in the minimum column width of candlestick items.

Note: Notifier signal for property minimumColumnWidth.

See also minimumColumnWidth.

[signal] void QCandlestickSeries::penChanged()

This signal is emitted when the candlestick item pen changes.

Note: Notifier signal for property pen.

See also pen.

[signal] void QCandlestickSeries::pressed(QCandlestickSet *set)

This signal is emitted when the user clicks the candlestick item specified by set and holds down the mouse button.

[signal] void QCandlestickSeries::released(QCandlestickSet *set)

This signal is emitted when the user releases the mouse press on the candlestick item specified by set.

bool QCandlestickSeries::remove(QCandlestickSet *set)

Removes a single candlestick item, specified by set, from the series. Returns true if the item is successfully deleted, false otherwise.

bool QCandlestickSeries::remove(const QList<QCandlestickSet *> &sets)

Removes a list of candlestick items specified by sets from the series. If any of the items are null, were already removed from the series, or appear in the list more than once, nothing is removed. Returns true if all items were removed successfully, false otherwise.

QList<QCandlestickSet *> QCandlestickSeries::sets() const

Returns the list of candlestick items in the series. Ownership of the items does not change.

bool QCandlestickSeries::take(QCandlestickSet *set)

Takes a single candlestick item, specified by set, from the series. Does not delete the item. Returns true if the take operation was successful, false otherwise.

Note: The series remains the item's parent object. You must set the parent object to take full ownership.

[virtual] QAbstractSeries::SeriesType QCandlestickSeries::type() const

Reimplemented from QAbstractSeries::type().

Returns the type of the series (QAbstractSeries::SeriesTypeCandlestick).