An annotation item that displays formatted text from a QTextDocument document. More...

#include <qgstextannotation.h>

Inheritance diagram for QgsTextAnnotation:

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Public Member Functions
	QgsTextAnnotation (QObject *parent=nullptr)
	Constructor for QgsTextAnnotation.

QgsTextAnnotation *	clone () const override
	Clones the annotation, returning a new copy of the annotation reflecting the annotation's current state.

const QTextDocument *	document () const
	Returns the text document which will be rendered within the annotation.

void	readXml (const QDomElement &itemElem, const QgsReadWriteContext &context) override
	Restores the annotation's state from a DOM element.

void	setDocument (const QTextDocument *doc)
	Sets the text document which will be rendered within the annotation.

void	writeXml (QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context) const override
	Writes the annotation state to a DOM element.

Public Member Functions inherited from QgsAnnotation
	QgsAnnotation (QObject *parent=nullptr)
	Constructor for QgsAnnotation.

	~QgsAnnotation () override

virtual bool	accept (QgsStyleEntityVisitorInterface *visitor) const
	Accepts the specified style entity visitor, causing it to visit all style entities associated within the annotation.

QgsFeature	associatedFeature () const
	Returns the feature associated with the annotation, or an invalid feature if none has been set.

QgsMargins	contentsMargin () const
	Returns the margins (in millimeters) between the outside of the frame and the annotation content.

QgsFillSymbol *	fillSymbol () const
	Returns the symbol that is used for rendering the annotation frame.

Q_DECL_DEPRECATED QPointF	frameOffsetFromReferencePoint () const
	Returns the annotation's frame's offset (in pixels) from the mapPosition() reference point.

QPointF	frameOffsetFromReferencePointMm () const
	Returns the annotation's frame's offset (in millimeters) from the mapPosition() reference point.

Q_DECL_DEPRECATED QSizeF	frameSize () const
	Returns the size (in pixels) of the annotation's frame (the main area in which the annotation's content is drawn).

QSizeF	frameSizeMm () const
	Returns the size (in millimeters) of the annotation's frame (the main area in which the annotation's content is drawn).

bool	hasFixedMapPosition () const
	Returns `true` if the annotation is attached to a fixed map position, or `false` if the annotation uses a position relative to the current map extent.

bool	isVisible () const
	Returns `true` if the annotation is visible and should be rendered.

QgsMapLayer *	mapLayer () const
	Returns the map layer associated with the annotation.

QgsPointXY	mapPosition () const
	Returns the map position of the annotation, if it is attached to a fixed map position.

QgsCoordinateReferenceSystem	mapPositionCrs () const
	Returns the CRS of the map position, or an invalid CRS if the annotation does not have a fixed map position.

QgsMarkerSymbol *	markerSymbol () const
	Returns the symbol that is drawn at the annotation's map position.

QPointF	relativePosition () const
	Returns the relative position of the annotation, if it is not attached to a fixed map position.

void	render (QgsRenderContext &context) const
	Renders the annotation to a target render context.

virtual void	setAssociatedFeature (const QgsFeature &feature)
	Sets the feature associated with the annotation.

void	setContentsMargin (const QgsMargins &margins)
	Sets the margins (in millimeters) between the outside of the frame and the annotation content.

void	setFillSymbol (QgsFillSymbol *symbol)
	Sets the fill symbol used for rendering the annotation frame.

Q_DECL_DEPRECATED void	setFrameOffsetFromReferencePoint (QPointF offset)
	Sets the annotation's frame's offset (in pixels) from the mapPosition() reference point.

void	setFrameOffsetFromReferencePointMm (QPointF offset)
	Sets the annotation's frame's offset (in millimeters) from the mapPosition() reference point.

Q_DECL_DEPRECATED void	setFrameSize (QSizeF size)
	Sets the size (in pixels) of the annotation's frame (the main area in which the annotation's content is drawn).

void	setFrameSizeMm (QSizeF size)
	Sets the size (in millimeters) of the annotation's frame (the main area in which the annotation's content is drawn).

void	setHasFixedMapPosition (bool fixed)
	Sets whether the annotation is attached to a fixed map position, or uses a position relative to the current map extent.

void	setMapLayer (QgsMapLayer *layer)
	Sets the map layer associated with the annotation.

void	setMapPosition (const QgsPointXY &position)
	Sets the map position of the annotation, if it is attached to a fixed map position.

void	setMapPositionCrs (const QgsCoordinateReferenceSystem &crs)
	Sets the CRS of the map position.

void	setMarkerSymbol (QgsMarkerSymbol *symbol)
	Sets the symbol that is drawn at the annotation's map position.

void	setRelativePosition (QPointF position)
	Sets the relative position of the annotation, if it is not attached to a fixed map position.

void	setVisible (bool visible)
	Sets whether the annotation is visible and should be rendered.

Static Public Member Functions
static QgsTextAnnotation *	create ()
	Returns a new QgsTextAnnotation object.

Protected Member Functions
void	renderAnnotation (QgsRenderContext &context, QSizeF size) const override
	Renders the annotation's contents to a target /a context at the specified /a size.

Protected Member Functions inherited from QgsAnnotation
void	_readXml (const QDomElement &annotationElem, const QgsReadWriteContext &context)
	Reads common annotation properties from a DOM element.

void	_writeXml (QDomElement &itemElem, QDomDocument &doc, const QgsReadWriteContext &context) const
	Writes common annotation properties to a DOM element.

void	copyCommonProperties (QgsAnnotation *target) const
	Copies common annotation properties to the targe annotation.

virtual QSizeF	minimumFrameSize () const
	Returns the minimum frame size for the annotation.

Additional Inherited Members
Signals inherited from QgsAnnotation
void	appearanceChanged ()
	Emitted whenever the annotation's appearance changes.

void	mapLayerChanged ()
	Emitted when the map layer associated with the annotation changes.

void	moved ()
	Emitted when the annotation's position has changed and items need to be moved to reflect this.

Properties inherited from QgsAnnotation
QSizeF	frameSize

bool	hasFixedMapPosition

QgsPointXY	mapPosition

bool	visible

Detailed Description

An annotation item that displays formatted text from a QTextDocument document.

Definition at line 30 of file qgstextannotation.h.

Constructor & Destructor Documentation

◆ QgsTextAnnotation()

QgsTextAnnotation::QgsTextAnnotation ( QObject * parent = nullptr )

Constructor for QgsTextAnnotation.

Definition at line 24 of file qgstextannotation.cpp.

Member Function Documentation

◆ clone()

QgsTextAnnotation * QgsTextAnnotation::clone ( ) const

overridevirtual

Clones the annotation, returning a new copy of the annotation reflecting the annotation's current state.

Implements QgsAnnotation.

Definition at line 31 of file qgstextannotation.cpp.

◆ create()

static QgsTextAnnotation * QgsTextAnnotation::create ( )

inlinestatic

Returns a new QgsTextAnnotation object.

Definition at line 63 of file qgstextannotation.h.

◆ document()

const QTextDocument * QgsTextAnnotation::document ( ) const

Returns the text document which will be rendered within the annotation.

See also: setDocument()

Definition at line 39 of file qgstextannotation.cpp.

◆ readXml()

void QgsTextAnnotation::readXml	(	const QDomElement &	itemElem,
		const QgsReadWriteContext &	context
	)

overridevirtual

Restores the annotation's state from a DOM element.

Derived classes should call _readXml() within their implementation of this method.

See also: writeXml(); _readXml()

Implements QgsAnnotation.

Definition at line 92 of file qgstextannotation.cpp.

◆ renderAnnotation()

void QgsTextAnnotation::renderAnnotation	(	QgsRenderContext &	context,
		QSizeF	size
	)		const

overrideprotectedvirtual

Renders the annotation's contents to a target /a context at the specified /a size.

Derived classes should implement their custom annotation drawing logic here.

Implements QgsAnnotation.

Definition at line 53 of file qgstextannotation.cpp.

◆ setDocument()

void QgsTextAnnotation::setDocument ( const QTextDocument * doc )

Sets the text document which will be rendered within the annotation.

Ownership is not transferred.

See also: document()

Definition at line 44 of file qgstextannotation.cpp.

◆ writeXml()

void QgsTextAnnotation::writeXml	(	QDomElement &	elem,
		QDomDocument &	doc,
		const QgsReadWriteContext &	context
	)		const

overridevirtual

Writes the annotation state to a DOM element.

Derived classes should call _writeXml() within their implementation of this method.

See also: readXml(); _writeXml()

Implements QgsAnnotation.

Definition at line 81 of file qgstextannotation.cpp.

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

/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/core/annotations/qgstextannotation.h
/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/core/annotations/qgstextannotation.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsTextAnnotation()

Member Function Documentation

◆ clone()

◆ create()

◆ document()

◆ readXml()

◆ renderAnnotation()

◆ setDocument()

◆ writeXml()