Abstract base class for GeoPDF exporters. More...

#include <qgsabstractgeopdfexporter.h>

Inheritance diagram for QgsAbstractGeoPdfExporter:

Classes
struct	ComponentLayerDetail
	Contains details of a particular input component to be used during PDF composition. More...

struct	ControlPoint
	Contains details of a control point used during georeferencing GeoPDF outputs. More...

struct	ExportDetails

struct	GeoReferencedSection

struct	RenderedFeature
	Contains information about a feature rendered inside the PDF. More...

struct	VectorComponentDetail
	Contains information relating to a single PDF layer in the GeoPDF export. More...

Public Member Functions
	QgsAbstractGeoPdfExporter ()=default
	Constructor for QgsAbstractGeoPdfExporter. More...

virtual	~QgsAbstractGeoPdfExporter ()=default

QString	errorMessage ()
	Returns the last error message encountered during the export. More...

bool	finalize (const QList< QgsAbstractGeoPdfExporter::ComponentLayerDetail > &components, const QString &destinationFile, const ExportDetails &details)
	To be called after the rendering operation is complete. More...

QString	generateTemporaryFilepath (const QString &filename) const
	Returns a file path to use for temporary files required for GeoPDF creation. More...

void	pushRenderedFeature (const QString &layerId, const QgsAbstractGeoPdfExporter::RenderedFeature &feature, const QString &group=QString())
	Called multiple times during the rendering operation, whenever a feature associated with the specified layerId is rendered. More...

Static Public Member Functions
static bool	compositionModeSupported (QPainter::CompositionMode mode)
	Returns `true` if the specified composition mode is supported for layers during GeoPDF exports. More...

static QString	geoPDFAvailabilityExplanation ()
	Returns a user-friendly, translated string explaining why GeoPDF export support is not available on the current QGIS build (or an empty string if GeoPDF support IS available). More...

static bool	geoPDFCreationAvailable ()
	Returns `true` if the current QGIS build is capable of GeoPDF support. More...

Friends
class	TestQgsGeoPdfExport

class	TestQgsLayoutGeoPdfExport

Detailed Description

Abstract base class for GeoPDF exporters.

The base class handles generic GeoPDF export setup, cleanup and processing steps.

This class is a low level implementation detail only. Generally, you should use the high level interface exposed by classes like QgsLayoutExporter instead.

Warning: QgsAbstractGeoPdfExporter is designed to be a short lived object. It should be created for a single export operation only, and then immediately destroyed. Failure to correctly destroy the object after exporting a PDF will leave the application in an inconsistent, unstable state.

Note: Not available in Python bindings

Since: QGIS 3.10

Definition at line 54 of file qgsabstractgeopdfexporter.h.

Constructor & Destructor Documentation

◆ QgsAbstractGeoPdfExporter()

QgsAbstractGeoPdfExporter::QgsAbstractGeoPdfExporter ( )

default

Constructor for QgsAbstractGeoPdfExporter.

◆ ~QgsAbstractGeoPdfExporter()

virtual QgsAbstractGeoPdfExporter::~QgsAbstractGeoPdfExporter ( )

virtualdefault

Member Function Documentation

◆ compositionModeSupported()

bool QgsAbstractGeoPdfExporter::compositionModeSupported ( QPainter::CompositionMode mode )

static

Returns true if the specified composition mode is supported for layers during GeoPDF exports.

Since: QGIS 3.14

Definition at line 142 of file qgsabstractgeopdfexporter.cpp.

◆ errorMessage()

QString QgsAbstractGeoPdfExporter::errorMessage ( )

inline

Returns the last error message encountered during the export.

Definition at line 307 of file qgsabstractgeopdfexporter.h.

◆ finalize()

bool QgsAbstractGeoPdfExporter::finalize	(	const QList< QgsAbstractGeoPdfExporter::ComponentLayerDetail > &	components,
		const QString &	destinationFile,
		const ExportDetails &	details
	)

To be called after the rendering operation is complete.

Will export the list of PDF layer components to a new PDF file at destinationFile. The components argument gives a list of additional layers to include in the generated PDF file. These must have already been created, e.g. as a result of rendering layers to separate PDF source files.

Any features previously collected by calls to pushRenderedFeature() will be included automatically in the GeoPDF export.

Returns true if the operation was successful, or false if an error occurred. If an error occurred, it can be retrieved by calling errorMessage().

Definition at line 87 of file qgsabstractgeopdfexporter.cpp.

◆ generateTemporaryFilepath()

QString QgsAbstractGeoPdfExporter::generateTemporaryFilepath ( const QString & filename ) const

Returns a file path to use for temporary files required for GeoPDF creation.

Definition at line 137 of file qgsabstractgeopdfexporter.cpp.

◆ geoPDFAvailabilityExplanation()

QString QgsAbstractGeoPdfExporter::geoPDFAvailabilityExplanation ( )

static

Returns a user-friendly, translated string explaining why GeoPDF export support is not available on the current QGIS build (or an empty string if GeoPDF support IS available).

See also: geoPDFCreationAvailable()

Definition at line 63 of file qgsabstractgeopdfexporter.cpp.

◆ geoPDFCreationAvailable()

bool QgsAbstractGeoPdfExporter::geoPDFCreationAvailable ( )

static

Returns true if the current QGIS build is capable of GeoPDF support.

If false is returned, a user-friendly explanation why can be retrieved via geoPDFAvailabilityExplanation().

Definition at line 38 of file qgsabstractgeopdfexporter.cpp.

◆ pushRenderedFeature()

void QgsAbstractGeoPdfExporter::pushRenderedFeature	(	const QString &	layerId,
		const QgsAbstractGeoPdfExporter::RenderedFeature &	feature,
		const QString &	group = `QString()`
	)

Called multiple times during the rendering operation, whenever a feature associated with the specified layerId is rendered.

The optional group argument can be used to differentiate features from the same layer exported multiple times as part of different layer groups.

Definition at line 167 of file qgsabstractgeopdfexporter.cpp.

Friends And Related Function Documentation

◆ TestQgsGeoPdfExport

friend class TestQgsGeoPdfExport

friend

Definition at line 375 of file qgsabstractgeopdfexporter.h.

◆ TestQgsLayoutGeoPdfExport

friend class TestQgsLayoutGeoPdfExport

friend

Definition at line 374 of file qgsabstractgeopdfexporter.h.

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

/build/qgis-3.18.1+99unstable/src/core/qgsabstractgeopdfexporter.h
/build/qgis-3.18.1+99unstable/src/core/qgsabstractgeopdfexporter.cpp

Classes

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

◆ QgsAbstractGeoPdfExporter()

◆ ~QgsAbstractGeoPdfExporter()

Member Function Documentation

◆ compositionModeSupported()

◆ errorMessage()

◆ finalize()

◆ generateTemporaryFilepath()

◆ geoPDFAvailabilityExplanation()

◆ geoPDFCreationAvailable()

◆ pushRenderedFeature()

Friends And Related Function Documentation

◆ TestQgsGeoPdfExport

◆ TestQgsLayoutGeoPdfExport