W3cubDocs

/Qt 5.13

QLegendMarker Class

The QLegendMarker class is an abstract object that can be used to access markers within a legend. More...

Header: #include <QLegendMarker>
Inherits: QObject
Inherited By:

QAreaLegendMarker, QBarLegendMarker, QBoxPlotLegendMarker, QCandlestickLegendMarker, QPieLegendMarker, and QXYLegendMarker

Public Types

enum LegendMarkerType { LegendMarkerTypeArea, LegendMarkerTypeBar, LegendMarkerTypePie, LegendMarkerTypeXY, LegendMarkerTypeBoxPlot, LegendMarkerTypeCandlestick }

Properties

Public Functions

virtual ~QLegendMarker()
QBrush brush() const
QFont font() const
bool isVisible() const
QString label() const
QBrush labelBrush() const
QPen pen() const
virtual QAbstractSeries * series() = 0
void setBrush(const QBrush &brush)
void setFont(const QFont &font)
void setLabel(const QString &label)
void setLabelBrush(const QBrush &brush)
void setPen(const QPen &pen)
void setShape(QLegend::MarkerShape shape)
void setVisible(bool visible)
QLegend::MarkerShape shape() const
virtual QLegendMarker::LegendMarkerType type() = 0

Signals

void brushChanged()
void clicked()
void fontChanged()
void hovered(bool status)
void labelBrushChanged()
void labelChanged()
void penChanged()
void shapeChanged()
void visibleChanged()

Detailed Description

A legend marker consists of an icon and a label. The icon color corresponds to the color used to draw a series and the label displays the name of the series (or the label of the slice for a pie series or bar set for a bar series). A legend marker is always related to one series, slice, or bar set.

See also QLegend.

Member Type Documentation

enum QLegendMarker::LegendMarkerType

The type of the legend marker object.

Constant Value Description
QLegendMarker::LegendMarkerTypeArea 0 A legend marker for an area series.
QLegendMarker::LegendMarkerTypeBar 1 A legend marker for a bar set.
QLegendMarker::LegendMarkerTypePie 2 A legend marker for a pie slice.
QLegendMarker::LegendMarkerTypeXY 3 A legend marker for a line, spline, or scatter series.
QLegendMarker::LegendMarkerTypeBoxPlot 4 A legend marker for a box plot series.
QLegendMarker::LegendMarkerTypeCandlestick 5 A legend marker for a candlestick series.

This enum was introduced or modified in Qt 5.8.

Property Documentation

brush : QBrush

This property holds the brush used to fill the icon.

Access functions:

QBrush brush() const
void setBrush(const QBrush &brush)

Notifier signal:

void brushChanged()

font : QFont

This property holds the font of the label.

Access functions:

QFont font() const
void setFont(const QFont &font)

Notifier signal:

void fontChanged()

label : QString

This property holds the text shown in the legend for a legend marker.

Access functions:

QString label() const
void setLabel(const QString &label)

Notifier signal:

void labelChanged()

labelBrush : QBrush

This property holds the brush of the label.

Access functions:

QBrush labelBrush() const
void setLabelBrush(const QBrush &brush)

Notifier signal:

void labelBrushChanged()

pen : QPen

This property holds the pen used to draw the outline of the icon.

Access functions:

QPen pen() const
void setPen(const QPen &pen)

Notifier signal:

void penChanged()

shape : QtCharts::QLegend::MarkerShape

The shape of the legend marker. Defaults to QLegend::MarkerShapeDefault, which indicates the shape is determined by QLegend::markerShape property.

Access functions:

QLegend::MarkerShape shape() const
void setShape(QLegend::MarkerShape shape)

Notifier signal:

void shapeChanged()

visible : bool

This property holds the visibility of the legend marker.

The visibility affects both the legend marker label and the icon.

Access functions:

bool isVisible() const
void setVisible(bool visible)

Notifier signal:

void visibleChanged()

Member Function Documentation

[signal] void QLegendMarker::brushChanged()

This signal is emitted when the brush of the legend marker has changed.

Note: Notifier signal for property brush.

[signal] void QLegendMarker::clicked()

This signal is emitted when the legend marker is clicked.

[signal] void QLegendMarker::fontChanged()

This signal is emitted when the (label) font of the legend marker has changed.

Note: Notifier signal for property font.

[signal] void QLegendMarker::hovered(bool status)

This signal is emitted when a mouse is hovered over the legend marker. When the mouse moves over the marker, status turns true, and when the mouse moves away again, it turns false.

[signal] void QLegendMarker::labelBrushChanged()

This signal is emitted when the label brush of the legend marker has changed.

Note: Notifier signal for property labelBrush.

[signal] void QLegendMarker::labelChanged()

This signal is emitted when the label of the legend marker has changed.

Note: Notifier signal for property label.

[signal] void QLegendMarker::penChanged()

This signal is emitted when the pen of the legend marker has changed.

Note: Notifier signal for property pen.

[signal] void QLegendMarker::visibleChanged()

This signal is emitted when the visibility of the legend marker has changed.

Note: Notifier signal for property visible.

[virtual] QLegendMarker::~QLegendMarker()

Removes the legend marker.

QBrush QLegendMarker::brush() const

Returns the brush used to fill the icon.

Note: Getter function for property brush.

See also setBrush().

QFont QLegendMarker::font() const

Retuns the font of the label.

Note: Getter function for property font.

See also setFont().

bool QLegendMarker::isVisible() const

Returns the visibility of the marker.

Note: Getter function for property visible.

QString QLegendMarker::label() const

Returns the label of the marker.

Note: Getter function for property label.

See also setLabel().

QBrush QLegendMarker::labelBrush() const

Returns the brush that is used to draw the label.

Note: Getter function for property labelBrush.

See also setLabelBrush().

QPen QLegendMarker::pen() const

Returns the pen used to draw the outline of the icon.

Note: Getter function for property pen.

See also setPen().

[pure virtual] QAbstractSeries *QLegendMarker::series()

Returns a pointer to the series that is related to this legend marker. A legend marker is always related to a series.

void QLegendMarker::setBrush(const QBrush &brush)

Sets the brush used to fill the icon to brush.

Note: Changing the color of the series also changes the color of the icon.

Note: Setter function for property brush.

See also brush().

void QLegendMarker::setFont(const QFont &font)

Sets the font of the label to font.

Note: Setter function for property font.

See also font().

void QLegendMarker::setLabel(const QString &label)

Sets the label of the marker to label.

Note: Changing the name of a series also changes the label of its marker.

Note: Setter function for property label.

See also label().

void QLegendMarker::setLabelBrush(const QBrush &brush)

Sets the the brush used to draw to label to brush.

Note: Setter function for property labelBrush.

See also labelBrush().

void QLegendMarker::setPen(const QPen &pen)

Sets the pen used to draw the outline of the icon to pen.

Note: Setter function for property pen.

See also pen().

void QLegendMarker::setVisible(bool visible)

Sets the marker's visibility to visible.

Note: Setter function for property visible.

See also isVisible().

[pure virtual] QLegendMarker::LegendMarkerType QLegendMarker::type()

Returns the type of the legend marker for the related series, pie slice, or bar set.

See also LegendMarkerType.

© The Qt Company Ltd
Licensed under the GNU Free Documentation License, Version 1.3.
https://doc.qt.io/qt-5.13/qlegendmarker.html