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QCustom3DLabel Class

The QCustom3DLabel class adds a custom label to a graph. More...

Header: #include <QCustom3DLabel>
CMake: find_package(Qt6 REQUIRED COMPONENTS Graphs)
target_link_libraries(mytarget PRIVATE Qt6::Graphs)
qmake: QT += graphs
In QML: Custom3DLabel
Inherits: QCustom3DItem

Properties

Public Functions

QCustom3DLabel(QObject *parent = nullptr)
QCustom3DLabel(const QString &text, const QFont &font, QVector3D position, QVector3D scaling, const QQuaternion &rotation, QObject *parent = nullptr)
virtual ~QCustom3DLabel() override
QColor backgroundColor() const
QFont font() const
bool isBackgroundVisible() const
bool isBorderVisible() const
bool isFacingCamera() const
void setBackgroundColor(QColor color)
void setBackgroundVisible(bool visible)
void setBorderVisible(bool visible)
void setFacingCamera(bool enabled)
void setFont(const QFont &font)
void setText(const QString &text)
void setTextColor(QColor color)
QString text() const
QColor textColor() const

Signals

void backgroundColorChanged(QColor color)
void backgroundVisibleChanged(bool visible)
void borderVisibleChanged(bool visible)
void facingCameraChanged(bool enabled)
void fontChanged(const QFont &font)
void textChanged(const QString &text)
void textColorChanged(QColor color)

Detailed Description

The text, font, position, scaling, rotation, and colors of a custom label can be set. In addition, the visibility of the borders and background of the label can be toggled. Colors, borders, and background are determined by the active theme unless set explicitly.

Note: In scaling, the z-coordinate has no effect. Setting the same x- and y-coordinates retains the original font dimensions.

See also Q3DGraphsWidgetItem::addCustomItem().

Property Documentation

backgroundColor : QColor

This property holds the color for the label background, if enabled.

Defaults to Qt::gray.

Access functions:

QColor backgroundColor() const
void setBackgroundColor(QColor color)

Notifier signal:

void backgroundColorChanged(QColor color)

See also backgroundVisible.

backgroundVisible : bool

This property holds whether the label background is visible.

If set to false, backgroundColor() has no effect. Defaults to true.

Access functions:

bool isBackgroundVisible() const
void setBackgroundVisible(bool visible)

Notifier signal:

void backgroundVisibleChanged(bool visible)

borderVisible : bool

This property holds whether label borders are visible.

Defaults to true.

Access functions:

bool isBorderVisible() const
void setBorderVisible(bool visible)

Notifier signal:

void borderVisibleChanged(bool visible)

facingCamera : bool

This property holds whether the label will always face the camera.

Defaults to false. If set to true, rotation() has no effect.

Access functions:

bool isFacingCamera() const
void setFacingCamera(bool enabled)

Notifier signal:

void facingCameraChanged(bool enabled)

font : QFont

This property holds the font to be used for the label.

Defaults to QFont("Arial", 20). Special formatting (for example, outlined) is not supported.

Access functions:

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

Notifier signal:

void fontChanged(const QFont &font)

text : QString

This property holds the text for the label.

Rich text is not supported.

Access functions:

QString text() const
void setText(const QString &text)

Notifier signal:

void textChanged(const QString &text)

textColor : QColor

This property holds the color for the label text.

Also affects the label border, if enabled. Defaults to Qt::white.

Access functions:

QColor textColor() const
void setTextColor(QColor color)

Notifier signal:

void textColorChanged(QColor color)

See also borderVisible.

Member Function Documentation

[explicit] QCustom3DLabel::QCustom3DLabel(QObject *parent = nullptr)

Constructs a custom 3D label with the given parent.

[explicit] QCustom3DLabel::QCustom3DLabel(const QString &text, const QFont &font, QVector3D position, QVector3D scaling, const QQuaternion &rotation, QObject *parent = nullptr)

Constructs a custom 3D label with the given text, font, position, scaling, rotation, and optional parent.

Note: Setting the same x- and y-coordinates for scaling retains the original font dimensions.

[override virtual noexcept] QCustom3DLabel::~QCustom3DLabel()

Deletes the custom 3D label.

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