QAbstractSeries Class

The QAbstractSeries class is a base class for all Qt Graphs for 2D series. More...

Header: #include <QAbstractSeries>
CMake: find_package(Qt6 REQUIRED COMPONENTS Graphs)
target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake: QT += graphs
Instantiated By: AbstractSeries
Inherits: QObject and QQmlParserStatus
Inherited By:

QAreaSeries, QBarSeries, QPieSeries, and QXYSeries

Public Types

enum class SeriesType { Line, Bar, Scatter, Pie, Spline, Area }

Properties

Public Functions

virtual ~QAbstractSeries() override
bool attachAxis(QAbstractAxis *axis)
QList<QAbstractAxis *> attachedAxes()
bool detachAxis(QAbstractAxis *axis)
QGraphsView *graph() const
void hide()
bool hoverable() const
bool isVisible() const
const QList<QLegendData> legendData() const
QString name() const
qreal opacity() const
bool selectable() const
QQmlListProperty<QObject> seriesChildren()
void setHoverable(bool newHoverable)
void setName(const QString &name)
void setOpacity(qreal opacity)
void setSelectable(bool selectable)
void setTheme(QSeriesTheme *newTheme)
void setValuesMultiplier(qreal valuesMultiplier)
void setVisible(bool visible = true)
void show()
QSeriesTheme *theme() const
virtual QAbstractSeries::SeriesType type() const = 0
qreal valuesMultiplier() const

Signals

void hover(QString seriesName, QPointF position, QPointF value)
void hoverEnter(QString seriesName, QPointF position, QPointF value)
void hoverExit(QString seriesName, QPointF position)
void hoverableChanged()
void legendDataChanged()
void nameChanged()
void opacityChanged()
void selectableChanged()
void themeChanged()
void valuesMultiplierChanged()
void visibleChanged()

Detailed Description

Usually, the series type specific inherited classes are used instead of the base class.

See also QLineSeries, QSplineSeries, QScatterSeries, QBarSeries, and QXYSeries.

Member Type Documentation

enum class QAbstractSeries::SeriesType

This enum describes the type of the series.

ConstantValueDescription
QAbstractSeries::SeriesType::Line0A line graph.
QAbstractSeries::SeriesType::Bar2A bar graph.
QAbstractSeries::SeriesType::Scatter4A scatter graph.
QAbstractSeries::SeriesType::Pie3A pie graph.
QAbstractSeries::SeriesType::Spline5A spline graph.
QAbstractSeries::SeriesType::Area1An area graph.

Property Documentation

hoverable : bool

Controls if the series is hoverable.

Controls if the series can be hovered with mouse/touch. By default, hoverable is set to false.

Access functions:

bool hoverable() const
void setHoverable(bool newHoverable)

Notifier signal:

void hoverableChanged()

[read-only] legendData : const QList<QLegendData>

Contains information needed to create a legend marker for a data set in a graph.

Access functions:

const QList<QLegendData> legendData() const

Notifier signal:

void legendDataChanged()

See also QLegendData.

name : QString

This property holds the name of the series.

The name is displayed in the legend for the series and it supports HTML formatting.

Access functions:

QString name() const
void setName(const QString &name)

Notifier signal:

void nameChanged()

opacity : qreal

This property holds the opacity of the series.

By default, the opacity is 1.0. The valid values range from 0.0 (transparent) to 1.0 (opaque).

Access functions:

qreal opacity() const
void setOpacity(qreal opacity)

Notifier signal:

void opacityChanged()

selectable : bool

Controls if the series is selectable.

Controls if the series can be selected with mouse/touch. By default, selectable is set to false.

Access functions:

bool selectable() const
void setSelectable(bool selectable)

Notifier signal:

void selectableChanged()

theme : QSeriesTheme*

This property holds the theme of the series.

The theme used for this series.

Access functions:

QSeriesTheme *theme() const
void setTheme(QSeriesTheme *newTheme)

Notifier signal:

void themeChanged()

[read-only] type : const SeriesType

This property holds the type of the series.

Access functions:

virtual QAbstractSeries::SeriesType type() const = 0

valuesMultiplier : qreal

Controls the series values effective visible value.

This variable can be used for animating the series values so they scale from 0 to actual value size. By default, the valuesMultiplier is 1.0. The valid values range from 0.0 (height 0) to 1.0 (full value).

Access functions:

qreal valuesMultiplier() const
void setValuesMultiplier(qreal valuesMultiplier)

Notifier signal:

void valuesMultiplierChanged()

visible : bool

Visibility of the series.

The visibility used for this series. By default, visible is set to true.

Access functions:

bool isVisible() const
void setVisible(bool visible = true)

Notifier signal:

void visibleChanged()

Member Function Documentation

[override virtual noexcept] QAbstractSeries::~QAbstractSeries()

Virtual destructor for the graph series.

bool QAbstractSeries::attachAxis(QAbstractAxis *axis)

Attaches the axis specified by axis to the series.

Returns true if the axis was attached successfully, false otherwise.

Note: If multiple axes of the same orientation are attached to the same series, they will have the same minimum and maximum values.

QList<QAbstractAxis *> QAbstractSeries::attachedAxes()

Returns the list of axes attached to the series. Usually, an x-axis and a y-axis are attached to a series, except for QPieSeries, which does not have any axes attached.

See also attachAxis() and detachAxis().

bool QAbstractSeries::detachAxis(QAbstractAxis *axis)

Detaches the axis specified by axis from the series.

Returns true if the axis was detached successfully, false otherwise.

QGraphsView *QAbstractSeries::graph() const

Returns the graph that the series belongs to.

Set automatically when the series is added to the graph, and unset when the series is removed from the graph.

void QAbstractSeries::hide()

Sets the visibility of the series to false.

See also setVisible() and isVisible().

[signal] void QAbstractSeries::hover(QString seriesName, QPointF position, QPointF value)

This signal is emitted when the series hovering changes. The name of the series is in seriesName, the mouse/touch position in position, and the series value in value.

Note: This signal is only emitted when hoverable is set to true.

[signal] void QAbstractSeries::hoverEnter(QString seriesName, QPointF position, QPointF value)

This signal is emitted when the series hovering starts. The name of the series is in seriesName, the mouse/touch position in position, and the series value in value.

Note: This signal is only emitted when hoverable is set to true.

[signal] void QAbstractSeries::hoverExit(QString seriesName, QPointF position)

This signal is emitted when the series hovering ends. The name of the series is in seriesName, and the mouse/touch position in position.

Note: This signal is only emitted when hoverable is set to true.

[signal] void QAbstractSeries::hoverableChanged()

This signal is emitted when the series hoverable changes.

Note: Notifier signal for property hoverable.

[signal] void QAbstractSeries::legendDataChanged()

This signal is emitted when legend data changes.

Note: Notifier signal for property legendData.

[signal] void QAbstractSeries::nameChanged()

This signal is emitted when the series name changes.

Note: Notifier signal for property name.

[signal] void QAbstractSeries::opacityChanged()

This signal is emitted when the opacity of the series changes.

Note: Notifier signal for property opacity.

[signal] void QAbstractSeries::selectableChanged()

This signal is emitted when the series selectable changes.

Note: Notifier signal for property selectable.

void QAbstractSeries::show()

Sets the visibility of the series to true.

See also setVisible() and isVisible().

[signal] void QAbstractSeries::themeChanged()

This signal is emitted when the series theme changes.

Note: Notifier signal for property theme.

[signal] void QAbstractSeries::valuesMultiplierChanged()

This signal is emitted when the valuesMultiplier of the series changes.

Note: Notifier signal for property valuesMultiplier.

[signal] void QAbstractSeries::visibleChanged()

This signal is emitted when the series visibility changes.

Note: Notifier signal for property visible.

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