QGIS API Documentation 3.36.0-Maidenhead (09951dc0acf)
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qgsvectorlayer.h
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1
2/***************************************************************************
3 -------------------
4 begin : Oct 29, 2003
5 copyright : (C) 2003 by Gary E.Sherman
6 email : sherman at mrcc.com
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSVECTORLAYER_H
19#define QGSVECTORLAYER_H
20
21#include "qgis_core.h"
22#include <QMap>
23#include <QSet>
24#include <QList>
25#include <QStringList>
26#include <QFont>
27#include <QMutex>
28
29#include "qgis.h"
30#include "qgsmaplayer.h"
31#include "qgsfeature.h"
32#include "qgsfeaturerequest.h"
33#include "qgsfeaturesource.h"
34#include "qgsfields.h"
37#include "qgseditformconfig.h"
40#include "qgsfeatureiterator.h"
45
46class QPainter;
47class QImage;
48
52class QgsCurve;
58class QgsGeometry;
59class QgsGeometryVertexIndex;
60class QgsMapToPixel;
61class QgsRectangle;
62class QgsRectangle;
63class QgsRelation;
64class QgsWeakRelation;
68class QgsSymbol;
75class QgsPoint;
76class QgsFeedback;
85
86#ifndef SIP_RUN
87template<class T>
89#endif
92
93
94typedef QList<int> QgsAttributeList;
95typedef QSet<int> QgsAttributeIds;
96
97// TODO QGIS4: Remove virtual from non-inherited methods (like isModified)
98
400{
401 Q_OBJECT
402
403 Q_PROPERTY( QString subsetString READ subsetString WRITE setSubsetString NOTIFY subsetStringChanged )
404 Q_PROPERTY( QString displayExpression READ displayExpression WRITE setDisplayExpression NOTIFY displayExpressionChanged )
405 Q_PROPERTY( QgsEditFormConfig editFormConfig READ editFormConfig WRITE setEditFormConfig NOTIFY editFormConfigChanged )
406 Q_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly NOTIFY readOnlyChanged )
407 Q_PROPERTY( bool supportsEditing READ supportsEditing NOTIFY supportsEditingChanged )
408
409 public:
410
411 static const QgsSettingsEntryBool *settingsSimplifyLocal SIP_SKIP;
412
413 static const QgsSettingsEntryDouble *settingsSimplifyMaxScale SIP_SKIP;
414 static const QgsSettingsEntryDouble *settingsSimplifyDrawingTol SIP_SKIP;
415 static const QgsSettingsEntryEnumFlag<QgsVectorSimplifyMethod::SimplifyAlgorithm> *settingsSimplifyAlgorithm SIP_SKIP;
416 static const QgsSettingsEntryEnumFlag<QgsVectorSimplifyMethod::SimplifyHints> *settingsSimplifyDrawingHints SIP_SKIP;
417
422 {
423
427 explicit LayerOptions( bool loadDefaultStyle = true,
428 bool readExtentFromXml = false )
429 : loadDefaultStyle( loadDefaultStyle )
430 , readExtentFromXml( readExtentFromXml )
431 {}
432
437 explicit LayerOptions( const QgsCoordinateTransformContext &transformContext,
438 bool loadDefaultStyle = true,
439 bool readExtentFromXml = false
440 )
441 : loadDefaultStyle( loadDefaultStyle )
442 , readExtentFromXml( readExtentFromXml )
443 , transformContext( transformContext )
444 {}
445
447 bool loadDefaultStyle = true;
448
453 bool readExtentFromXml = false;
454
460
473
486
500 bool skipCrsValidation = false;
501
513 bool forceReadOnly = false;
514
527 bool loadAllStoredStyles = false;
528 };
529
534 struct CORE_EXPORT DeleteContext
535 {
536
540 explicit DeleteContext( bool cascade = false, QgsProject *project = nullptr ): cascade( cascade ), project( project ) {}
541
548 QList<QgsVectorLayer *> handledLayers( bool includeAuxiliaryLayers = true ) const;
549
553 QgsFeatureIds handledFeatures( QgsVectorLayer *layer ) const;
554
555 QMap<QgsVectorLayer *, QgsFeatureIds> mHandledFeatures SIP_SKIP;
558 };
559
573 explicit QgsVectorLayer( const QString &path = QString(), const QString &baseName = QString(),
574 const QString &providerLib = "ogr", const QgsVectorLayer::LayerOptions &options = QgsVectorLayer::LayerOptions() );
575
576 ~QgsVectorLayer() override;
577
579 QgsVectorLayer( const QgsVectorLayer &rhs ) = delete;
581 QgsVectorLayer &operator=( QgsVectorLayer const &rhs ) = delete;
582
583#ifdef SIP_RUN
584 SIP_PYOBJECT __repr__();
585 % MethodCode
586 QString str = QStringLiteral( "<QgsVectorLayer: '%1' (%2)>" ).arg( sipCpp->name(), sipCpp->dataProvider() ? sipCpp->dataProvider()->name() : QStringLiteral( "Invalid" ) );
587 sipRes = PyUnicode_FromString( str.toUtf8().constData() );
588 % End
589#endif
590
598 QgsVectorLayer *clone() const override SIP_FACTORY;
599
604 QString storageType() const;
605
609 QString capabilitiesString() const;
610
611
621 bool isSqlQuery() const;
622
629 Qgis::VectorLayerTypeFlags vectorLayerTypeFlags() const;
630
631
635 QString dataComment() const;
636
644 QString displayField() const;
645
653 void setDisplayExpression( const QString &displayExpression );
654
661 QString displayExpression() const;
662
663 bool hasMapTips() const FINAL;
664
665 QgsVectorDataProvider *dataProvider() FINAL;
666 const QgsVectorDataProvider *dataProvider() const FINAL SIP_SKIP;
667 QgsMapLayerSelectionProperties *selectionProperties() override;
668 QgsMapLayerTemporalProperties *temporalProperties() override;
669 QgsMapLayerElevationProperties *elevationProperties() override;
670 QgsAbstractProfileGenerator *createProfileGenerator( const QgsProfileRequest &request ) override SIP_FACTORY;
671
682 void setProviderEncoding( const QString &encoding );
683
685 void setCoordinateSystem();
686
692 bool addJoin( const QgsVectorLayerJoinInfo &joinInfo );
693
698 bool removeJoin( const QString &joinLayerId );
699
703 QgsVectorLayerJoinBuffer *joinBuffer() { return mJoinBuffer; }
704
709 const QgsVectorLayerJoinBuffer *joinBuffer() const { return mJoinBuffer; } SIP_SKIP;
710
711 const QList<QgsVectorLayerJoinInfo> vectorJoins() const;
712
720 bool setDependencies( const QSet<QgsMapLayerDependency> &layers ) FINAL;
721
728 QSet<QgsMapLayerDependency> dependencies() const FINAL;
729
739 int addExpressionField( const QString &exp, const QgsField &fld );
740
747 void removeExpressionField( int index );
748
757 QString expressionField( int index ) const;
758
767 void updateExpressionField( int index, const QString &exp );
768
775 QgsActionManager *actions() { return mActions; }
776
782 const QgsActionManager *actions() const SIP_SKIP { return mActions; }
783
789 int selectedFeatureCount() const;
790
800 Q_INVOKABLE void selectByRect( QgsRectangle &rect, Qgis::SelectBehavior behavior = Qgis::SelectBehavior::SetSelection );
801
811 Q_INVOKABLE void selectByExpression( const QString &expression, Qgis::SelectBehavior behavior = Qgis::SelectBehavior::SetSelection, QgsExpressionContext *context = nullptr );
812
822 Q_INVOKABLE void selectByIds( const QgsFeatureIds &ids, Qgis::SelectBehavior behavior = Qgis::SelectBehavior::SetSelection );
823
835 Q_INVOKABLE void modifySelection( const QgsFeatureIds &selectIds, const QgsFeatureIds &deselectIds );
836
838 Q_INVOKABLE void invertSelection();
839
841 Q_INVOKABLE void selectAll();
842
850 Q_INVOKABLE void invertSelectionInRectangle( QgsRectangle &rect );
851
864 Q_INVOKABLE QgsFeatureList selectedFeatures() const;
865
881 QgsFeatureIterator getSelectedFeatures( QgsFeatureRequest request = QgsFeatureRequest() ) const;
882
890 Q_INVOKABLE const QgsFeatureIds &selectedFeatureIds() const;
891
893 Q_INVOKABLE QgsRectangle boundingBoxOfSelected() const;
894
901 bool labelsEnabled() const;
902
912 void setLabelsEnabled( bool enabled );
913
918 bool diagramsEnabled() const;
919
921 void setDiagramRenderer( QgsDiagramRenderer *r SIP_TRANSFER );
922 const QgsDiagramRenderer *diagramRenderer() const { return mDiagramRenderer; }
923
924 void setDiagramLayerSettings( const QgsDiagramLayerSettings &s );
925 const QgsDiagramLayerSettings *diagramLayerSettings() const { return mDiagramLayerSettings; }
926
933 QgsFeatureRenderer *renderer() { return mRenderer; }
934
942 const QgsFeatureRenderer *renderer() const SIP_SKIP { return mRenderer; }
943
950 void setRenderer( QgsFeatureRenderer *r SIP_TRANSFER );
951
961 void addFeatureRendererGenerator( QgsFeatureRendererGenerator *generator SIP_TRANSFER );
962
972 void removeFeatureRendererGenerator( const QString &id );
973
981 QList< const QgsFeatureRendererGenerator * > featureRendererGenerators() const;
982
984 Q_INVOKABLE Qgis::GeometryType geometryType() const;
985
987 Q_INVOKABLE Qgis::WkbType wkbType() const FINAL;
988
989 QgsCoordinateReferenceSystem sourceCrs() const FINAL;
990 QString sourceName() const FINAL;
991
996 bool readXml( const QDomNode &layer_node, QgsReadWriteContext &context ) FINAL;
997
1002 bool writeXml( QDomNode &layer_node, QDomDocument &doc, const QgsReadWriteContext &context ) const FINAL;
1003
1004 QString encodedSource( const QString &source, const QgsReadWriteContext &context ) const FINAL;
1005 QString decodedSource( const QString &source, const QString &provider, const QgsReadWriteContext &context ) const FINAL;
1006
1010 void resolveReferences( QgsProject *project ) FINAL;
1011
1024 bool loadAuxiliaryLayer( const QgsAuxiliaryStorage &storage, const QString &key = QString() );
1025
1034 void setAuxiliaryLayer( QgsAuxiliaryLayer *layer SIP_TRANSFER = nullptr );
1035
1040 QgsAuxiliaryLayer *auxiliaryLayer();
1041
1046 const QgsAuxiliaryLayer *auxiliaryLayer() const SIP_SKIP;
1047
1048 bool readSymbology( const QDomNode &layerNode, QString &errorMessage,
1049 QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) FINAL;
1050 bool readStyle( const QDomNode &node, QString &errorMessage,
1051 QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) FINAL;
1052 bool writeSymbology( QDomNode &node, QDomDocument &doc, QString &errorMessage,
1053 const QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) const FINAL;
1054 bool writeStyle( QDomNode &node, QDomDocument &doc, QString &errorMessage,
1055 const QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) const FINAL;
1056
1065 bool writeSld( QDomNode &node, QDomDocument &doc, QString &errorMessage, const QVariantMap &props = QVariantMap() ) const;
1066
1067 bool readSld( const QDomNode &node, QString &errorMessage ) FINAL;
1068
1074 long long featureCount( const QString &legendKey ) const;
1075
1082 QgsFeatureIds symbolFeatureIds( const QString &legendKey ) const;
1083
1094 Qgis::FeatureAvailability hasFeatures() const FINAL;
1095
1096 QString loadDefaultStyle( bool &resultFlag SIP_OUT ) FINAL;
1097
1110 QgsVectorLayerFeatureCounter *countSymbolFeatures( bool storeSymbolFids = false );
1111
1119 virtual bool setSubsetString( const QString &subset );
1120
1125 virtual QString subsetString() const;
1126
1132 QgsFeatureIterator getFeatures( const QgsFeatureRequest &request = QgsFeatureRequest() ) const FINAL;
1133
1137 inline QgsFeatureIterator getFeatures( const QString &expression )
1138 {
1139 return getFeatures( QgsFeatureRequest( expression ) );
1140 }
1141
1147 {
1148 QgsFeature feature;
1149 getFeatures( QgsFeatureRequest( fid ) ).nextFeature( feature );
1150 return feature;
1151 }
1152
1157 QgsGeometry getGeometry( QgsFeatureId fid ) const;
1158
1163 {
1164 return getFeatures( QgsFeatureRequest( fids ) );
1165 }
1166
1171 {
1172 return getFeatures( QgsFeatureRequest( rectangle ) );
1173 }
1174
1175 bool addFeature( QgsFeature &feature, QgsFeatureSink::Flags flags = QgsFeatureSink::Flags() ) FINAL;
1176
1202 bool updateFeature( QgsFeature &feature, bool skipDefaultValues = false );
1203
1215 bool insertVertex( double x, double y, QgsFeatureId atFeatureId, int beforeVertex );
1216
1228 bool insertVertex( const QgsPoint &point, QgsFeatureId atFeatureId, int beforeVertex );
1229
1240 bool moveVertex( double x, double y, QgsFeatureId atFeatureId, int atVertex );
1241
1252 bool moveVertex( const QgsPoint &p, QgsFeatureId atFeatureId, int atVertex ) SIP_PYNAME( moveVertexV2 );
1253
1263 Qgis::VectorEditResult deleteVertex( QgsFeatureId featureId, int vertex );
1264
1272 Q_INVOKABLE bool deleteSelectedFeatures( int *deletedCount = nullptr, QgsVectorLayer::DeleteContext *context = nullptr );
1273
1294 Q_DECL_DEPRECATED Qgis::GeometryOperationResult addRing( const QVector<QgsPointXY> &ring, QgsFeatureId *featureId = nullptr ) SIP_DEPRECATED;
1295
1296
1316 Q_INVOKABLE Qgis::GeometryOperationResult addRing( const QgsPointSequence &ring, QgsFeatureId *featureId = nullptr );
1317
1338 Q_INVOKABLE Qgis::GeometryOperationResult addRing( QgsCurve *ring SIP_TRANSFER, QgsFeatureId *featureId = nullptr ) SIP_PYNAME( addCurvedRing );
1339
1359 Q_DECL_DEPRECATED Qgis::GeometryOperationResult addPart( const QList<QgsPointXY> &ring ) SIP_DEPRECATED;
1360
1361#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
1362
1383 Q_DECL_DEPRECATED Qgis::GeometryOperationResult addPart( const QVector<QgsPointXY> &ring ) SIP_PYNAME( addPartV2 ) SIP_DEPRECATED;
1384#endif
1385
1405 Q_INVOKABLE Qgis::GeometryOperationResult addPart( const QgsPointSequence &ring ) SIP_PYNAME( addPartV2 );
1406
1414 Q_INVOKABLE Qgis::GeometryOperationResult addPart( QgsCurve *ring SIP_TRANSFER ) SIP_PYNAME( addCurvedPart );
1415
1427 Q_INVOKABLE int translateFeature( QgsFeatureId featureId, double dx, double dy );
1428
1449 Q_DECL_DEPRECATED Qgis::GeometryOperationResult splitParts( const QVector<QgsPointXY> &splitLine, bool topologicalEditing = false ) SIP_DEPRECATED;
1450
1470 Q_INVOKABLE Qgis::GeometryOperationResult splitParts( const QgsPointSequence &splitLine, bool topologicalEditing = false );
1471
1492 Q_DECL_DEPRECATED Qgis::GeometryOperationResult splitFeatures( const QVector<QgsPointXY> &splitLine, bool topologicalEditing = false ) SIP_DEPRECATED;
1493
1513 Q_INVOKABLE Qgis::GeometryOperationResult splitFeatures( const QgsPointSequence &splitLine, bool topologicalEditing = false );
1514
1537 Q_INVOKABLE Qgis::GeometryOperationResult splitFeatures( const QgsCurve *curve, QgsPointSequence &topologyTestPoints SIP_OUT, bool preserveCircular = false, bool topologicalEditing = false );
1538
1552 int addTopologicalPoints( const QgsGeometry &geom );
1553
1570 Q_DECL_DEPRECATED int addTopologicalPoints( const QgsPointXY &p ) SIP_DEPRECATED;
1571
1588 int addTopologicalPoints( const QgsPoint &p );
1589
1606 int addTopologicalPoints( const QgsPointSequence &ps );
1607
1613 const QgsAbstractVectorLayerLabeling *labeling() const SIP_SKIP { return mLabeling; }
1614
1621
1625 void setLabeling( QgsAbstractVectorLayerLabeling *labeling SIP_TRANSFER );
1626
1628 bool isEditable() const FINAL;
1629
1631 bool isSpatial() const FINAL;
1632
1634 bool isModified() const override;
1635
1641 bool isAuxiliaryField( int index, int &srcIndex ) const;
1642
1644 void reload() FINAL;
1645
1649 QgsMapLayerRenderer *createMapRenderer( QgsRenderContext &rendererContext ) FINAL SIP_FACTORY;
1650
1651 QgsRectangle extent() const FINAL;
1652 QgsRectangle sourceExtent() const FINAL;
1653
1654 QgsBox3D extent3D() const FINAL;
1655 QgsBox3D sourceExtent3D() const FINAL;
1656
1663 QgsFields fields() const FINAL;
1664
1668 inline QgsAttributeList attributeList() const { return mFields.allAttributesList(); }
1669
1673 QgsAttributeList primaryKeyAttributes() const;
1674
1680 long long featureCount() const FINAL;
1681
1688 bool setReadOnly( bool readonly = true );
1689
1695 bool supportsEditing() const override;
1696
1717 bool changeGeometry( QgsFeatureId fid, QgsGeometry &geometry, bool skipDefaultValue = false );
1718
1749 bool changeAttributeValue( QgsFeatureId fid, int field, const QVariant &newValue, const QVariant &oldValue = QVariant(), bool skipDefaultValues = false );
1750
1785 bool changeAttributeValues( QgsFeatureId fid, const QgsAttributeMap &newValues, const QgsAttributeMap &oldValues = QgsAttributeMap(), bool skipDefaultValues = false );
1786
1796 bool addAttribute( const QgsField &field );
1797
1802 void setFieldAlias( int index, const QString &aliasString );
1803
1808 void removeFieldAlias( int index );
1809
1819 bool renameAttribute( int index, const QString &newName );
1820
1827 QString attributeAlias( int index ) const;
1828
1830 QString attributeDisplayName( int index ) const;
1831
1833 QgsStringMap attributeAliases() const;
1834
1835#ifndef SIP_RUN
1836
1842 void setFieldSplitPolicy( int index, Qgis::FieldDomainSplitPolicy policy );
1843#else
1844
1851 void setFieldSplitPolicy( int index, Qgis::FieldDomainSplitPolicy policy );
1852
1853 % MethodCode
1854 if ( a0 < 0 || a0 >= sipCpp->fields().count() )
1855 {
1856 PyErr_SetString( PyExc_KeyError, QByteArray::number( a0 ) );
1857 sipIsErr = 1;
1858 }
1859 else
1860 {
1861 sipCpp->setFieldSplitPolicy( a0, a1 );
1862 }
1863 % End
1864#endif
1865
1870 Q_DECL_DEPRECATED QSet<QString> excludeAttributesWms() const SIP_DEPRECATED;
1871
1876 Q_DECL_DEPRECATED void setExcludeAttributesWms( const QSet<QString> &att ) SIP_DEPRECATED;
1877
1882 Q_DECL_DEPRECATED QSet<QString> excludeAttributesWfs() const SIP_DEPRECATED;
1883
1888 Q_DECL_DEPRECATED void setExcludeAttributesWfs( const QSet<QString> &att ) SIP_DEPRECATED;
1889
1898 virtual bool deleteAttribute( int attr );
1899
1907 bool deleteAttributes( const QList<int> &attrs );
1908
1909 bool addFeatures( QgsFeatureList &features, QgsFeatureSink::Flags flags = QgsFeatureSink::Flags() ) FINAL;
1910
1921 bool deleteFeature( QgsFeatureId fid, DeleteContext *context = nullptr );
1922
1936 bool deleteFeatures( const QgsFeatureIds &fids, DeleteContext *context = nullptr );
1937
1961 Q_INVOKABLE bool commitChanges( bool stopEditing = true );
1962
1968 QStringList commitErrors() const;
1969
1979 Q_INVOKABLE bool rollBack( bool deleteBuffer = true );
1980
1987 QList<QgsRelation> referencingRelations( int idx ) const;
1988
1998 QList<QgsWeakRelation> weakRelations() const SIP_SKIP;
1999
2008 void setWeakRelations( const QList< QgsWeakRelation > &relations ) SIP_SKIP;
2009
2011 Q_INVOKABLE QgsVectorLayerEditBuffer *editBuffer() { return mEditBuffer; }
2012
2017 const QgsVectorLayerEditBuffer *editBuffer() const SIP_SKIP { return mEditBuffer; }
2018
2023 void beginEditCommand( const QString &text );
2024
2026 void endEditCommand();
2027
2029 void destroyEditCommand();
2030
2035 Q_DECL_DEPRECATED static void drawVertexMarker( double x, double y, QPainter &p, Qgis::VertexMarkerType type, int vertexSize );
2036
2045 void updateFields();
2046
2060 QVariant defaultValue( int index, const QgsFeature &feature = QgsFeature(),
2061 QgsExpressionContext *context = nullptr ) const;
2062
2073 void setDefaultValueDefinition( int index, const QgsDefaultValue &definition );
2074
2084 QgsDefaultValue defaultValueDefinition( int index ) const;
2085
2092 QgsFieldConstraints::Constraints fieldConstraints( int fieldIndex ) const;
2093
2098 QMap< QgsFieldConstraints::Constraint, QgsFieldConstraints::ConstraintStrength> fieldConstraintsAndStrength( int fieldIndex ) const;
2099
2108
2115 void removeFieldConstraint( int index, QgsFieldConstraints::Constraint constraint );
2116
2123 QString constraintExpression( int index ) const;
2124
2131 QString constraintDescription( int index ) const;
2132
2140 void setConstraintExpression( int index, const QString &expression, const QString &description = QString() );
2141
2147 void setFieldConfigurationFlags( int index, Qgis::FieldConfigurationFlags flags );
2148
2153 void setFieldConfigurationFlag( int index, Qgis::FieldConfigurationFlag flag, bool active );
2154
2160 Qgis::FieldConfigurationFlags fieldConfigurationFlags( int index ) const;
2161
2165 void setEditorWidgetSetup( int index, const QgsEditorWidgetSetup &setup );
2166
2172 QgsEditorWidgetSetup editorWidgetSetup( int index ) const;
2173
2185 QSet<QVariant> uniqueValues( int fieldIndex, int limit = -1 ) const FINAL;
2186
2200 QStringList uniqueStringsMatching( int index, const QString &substring, int limit = -1,
2201 QgsFeedback *feedback = nullptr ) const;
2202
2217 QVariant minimumValue( int index ) const FINAL;
2218
2233 QVariant maximumValue( int index ) const FINAL;
2234
2235
2255 void minimumAndMaximumValue( int index, QVariant &minimum SIP_OUT, QVariant &maximum SIP_OUT ) const;
2256
2270 QVariant aggregate( Qgis::Aggregate aggregate,
2271 const QString &fieldOrExpression,
2272 const QgsAggregateCalculator::AggregateParameters &parameters = QgsAggregateCalculator::AggregateParameters(),
2273 QgsExpressionContext *context = nullptr,
2274 bool *ok = nullptr,
2275 QgsFeatureIds *fids = nullptr,
2276 QgsFeedback *feedback = nullptr,
2277 QString *error SIP_PYARGREMOVE = nullptr ) const;
2278
2280 void setFeatureBlendMode( QPainter::CompositionMode blendMode );
2282 QPainter::CompositionMode featureBlendMode() const;
2283
2284 QString htmlMetadata() const FINAL;
2285
2289 void setSimplifyMethod( const QgsVectorSimplifyMethod &simplifyMethod ) { mSimplifyMethod = simplifyMethod; }
2290
2294 inline const QgsVectorSimplifyMethod &simplifyMethod() const { return mSimplifyMethod; }
2295
2300 bool simplifyDrawingCanbeApplied( const QgsRenderContext &renderContext, QgsVectorSimplifyMethod::SimplifyHint simplifyHint ) const;
2301
2308 QgsConditionalLayerStyles *conditionalStyles() const;
2309
2314 QgsAttributeTableConfig attributeTableConfig() const;
2315
2320 void setAttributeTableConfig( const QgsAttributeTableConfig &attributeTableConfig );
2321
2323
2324 QgsExpressionContextScope *createExpressionContextScope() const FINAL SIP_FACTORY;
2325
2332 QgsEditFormConfig editFormConfig() const;
2333
2339 void setEditFormConfig( const QgsEditFormConfig &editFormConfig );
2340
2347 void setReadExtentFromXml( bool readExtentFromXml );
2348
2355 bool readExtentFromXml() const;
2356
2361 bool isEditCommandActive() const { return mEditCommandActive; }
2362
2368 QgsGeometryOptions *geometryOptions() const;
2369
2387 bool allowCommit() const SIP_SKIP;
2388
2406 void setAllowCommit( bool allowCommit ) SIP_SKIP;
2407
2413 QgsStoredExpressionManager *storedExpressionManager() { return mStoredExpressionManager; }
2414
2415 public slots:
2416
2424 void select( QgsFeatureId featureId );
2425
2433 Q_INVOKABLE void select( const QgsFeatureIds &featureIds );
2434
2442 void deselect( QgsFeatureId featureId );
2443
2451 Q_INVOKABLE void deselect( const QgsFeatureIds &featureIds );
2452
2459 Q_INVOKABLE void removeSelection();
2460
2471 void reselect();
2472
2479 virtual void updateExtents( bool force = false );
2480
2495 Q_INVOKABLE bool startEditing();
2496
2502 virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext ) override;
2503
2505
2506 bool accept( QgsStyleEntityVisitorInterface *visitor ) const override;
2507
2508 signals:
2509
2517 void selectionChanged( const QgsFeatureIds &selected, const QgsFeatureIds &deselected, bool clearAndSelect );
2518
2525
2528
2531
2537 void beforeCommitChanges( bool stopEditing );
2538
2541
2547
2553
2562 void attributeAdded( int idx );
2563
2570 void beforeAddingExpressionField( const QString &fieldName );
2571
2580 void attributeDeleted( int idx );
2581
2589
2596
2606
2616 void featuresDeleted( const QgsFeatureIds &fids );
2617
2623
2629
2638 void attributeValueChanged( QgsFeatureId fid, int idx, const QVariant &value );
2639
2647 void geometryChanged( QgsFeatureId fid, const QgsGeometry &geometry );
2648
2650 void committedAttributesDeleted( const QString &layerId, const QgsAttributeList &deletedAttributes );
2652 void committedAttributesAdded( const QString &layerId, const QList<QgsField> &addedAttributes );
2654 void committedFeaturesAdded( const QString &layerId, const QgsFeatureList &addedFeatures );
2656 void committedFeaturesRemoved( const QString &layerId, const QgsFeatureIds &deletedFeatureIds );
2658 void committedAttributeValuesChanges( const QString &layerId, const QgsChangedAttributesMap &changedAttributesValues );
2660 void committedGeometriesChanges( const QString &layerId, const QgsGeometryMap &changedGeometries );
2661
2663 void labelingFontNotFound( QgsVectorLayer *layer, const QString &fontfamily );
2664
2666 void featureBlendModeChanged( QPainter::CompositionMode blendMode );
2667
2673 void editCommandStarted( const QString &text );
2674
2681
2688
2698 void readCustomSymbology( const QDomElement &element, QString &errorMessage );
2699
2709 void writeCustomSymbology( QDomElement &element, QDomDocument &doc, QString &errorMessage ) const;
2710
2716
2720 void raiseError( const QString &msg );
2721
2727
2736
2743
2749
2750 protected:
2752 void setExtent( const QgsRectangle &rect ) FINAL;
2754 void setExtent3D( const QgsBox3D &rect ) FINAL;
2755
2756 private slots:
2757 void invalidateSymbolCountedFlag();
2758 void onFeatureCounterCompleted();
2759 void onFeatureCounterTerminated();
2760 void onJoinedFieldsChanged();
2761 void onFeatureDeleted( QgsFeatureId fid );
2762 void onRelationsLoaded();
2763 void onSymbolsCounted();
2764 void onDirtyTransaction( const QString &sql, const QString &name );
2765 void emitDataChanged();
2766 void onAfterCommitChangesDependency();
2767
2768 private:
2769 void updateDefaultValues( QgsFeatureId fid, QgsFeature feature = QgsFeature() );
2770
2780 bool isReadOnly() const FINAL;
2781
2788 bool setDataProvider( QString const &provider, const QgsDataProvider::ProviderOptions &options, QgsDataProvider::ReadFlags flags = QgsDataProvider::ReadFlags() );
2789
2801 void setDataSourcePrivate( const QString &dataSource, const QString &baseName, const QString &provider, const QgsDataProvider::ProviderOptions &options, QgsDataProvider::ReadFlags flags ) override;
2802
2804 void readSldLabeling( const QDomNode &node );
2805
2807 bool readSldTextSymbolizer( const QDomNode &node, QgsPalLayerSettings &settings ) const;
2808
2810 QgsAbstractVectorLayerLabeling *readLabelingFromCustomProperties();
2811
2812 bool deleteFeatureCascade( QgsFeatureId fid, DeleteContext *context = nullptr );
2813
2814#ifdef SIP_RUN
2815 QgsVectorLayer( const QgsVectorLayer &rhs );
2816#endif
2818 void minimumOrMaximumValue( int index, QVariant *minimum, QVariant *maximum ) const;
2819
2820 void createEditBuffer();
2821 void clearEditBuffer();
2822
2823 QgsConditionalLayerStyles *mConditionalStyles = nullptr;
2824 QgsVectorDataProvider *mDataProvider = nullptr;
2825 QgsVectorLayerSelectionProperties *mSelectionProperties = nullptr;
2826 QgsVectorLayerTemporalProperties *mTemporalProperties = nullptr;
2827 QgsVectorLayerElevationProperties *mElevationProperties = nullptr;
2828
2830 QString mDisplayExpression;
2831
2833 QgsActionManager *mActions = nullptr;
2834
2836 bool mDataSourceReadOnly = false;
2837
2844 bool mReadOnly = false;
2845
2851 QgsFeatureIds mSelectedFeatureIds;
2852
2856 QgsFeatureIds mPreviousSelectedFeatureIds;
2857
2859 QgsFields mFields;
2860
2862 QgsStringMap mAttributeAliasMap;
2863
2865 QMap<QString, QgsDefaultValue> mDefaultExpressionMap;
2866
2868 QMap< QString, Qgis::FieldDomainSplitPolicy > mAttributeSplitPolicy;
2869
2871 QSet<int> mDefaultValueOnUpdateFields;
2872
2874 QMap< QString, QgsFieldConstraints::Constraints > mFieldConstraints;
2875
2877 QMap< QPair< QString, QgsFieldConstraints::Constraint >, QgsFieldConstraints::ConstraintStrength > mFieldConstraintStrength;
2878
2880 QMap< QString, QPair< QString, QString > > mFieldConstraintExpressions;
2881
2882 QMap< QString, Qgis::FieldConfigurationFlags > mFieldConfigurationFlags;
2883 QMap< QString, QgsEditorWidgetSetup > mFieldWidgetSetups;
2884
2886 QgsEditFormConfig mEditFormConfig;
2887
2890
2892 QgsFeatureRenderer *mRenderer = nullptr;
2893
2895 QgsVectorSimplifyMethod mSimplifyMethod;
2896
2898 QgsAbstractVectorLayerLabeling *mLabeling = nullptr;
2899
2901 bool mLabelsEnabled = false;
2902
2904 bool mLabelFontNotFoundNotified = false;
2905
2907 QPainter::CompositionMode mFeatureBlendMode = QPainter::CompositionMode_SourceOver;
2908
2910 bool mVertexMarkerOnlyForSelection = false;
2911
2912 QStringList mCommitErrors;
2913
2915 QgsVectorLayerEditBuffer *mEditBuffer = nullptr;
2919
2920 //stores information about joined layers
2921 QgsVectorLayerJoinBuffer *mJoinBuffer = nullptr;
2922
2924 QgsExpressionFieldBuffer *mExpressionFieldBuffer = nullptr;
2925
2926 //diagram rendering object. 0 if diagram drawing is disabled
2927 QgsDiagramRenderer *mDiagramRenderer = nullptr;
2928
2929 //stores infos about diagram placement (placement type, priority, position distance)
2930 QgsDiagramLayerSettings *mDiagramLayerSettings = nullptr;
2931
2932 mutable bool mValidExtent2D = false;
2933 mutable bool mLazyExtent2D = true;
2934 mutable bool mValidExtent3D = false;
2935 mutable bool mLazyExtent3D = true;
2936
2938 std::unique_ptr<QgsAuxiliaryLayer> mAuxiliaryLayer;
2939
2941 QString mAuxiliaryLayerKey;
2942
2943 // Features in renderer classes counted
2944 bool mSymbolFeatureCounted = false;
2945
2946 // Feature counts for each renderer legend key
2947 QHash<QString, long long> mSymbolFeatureCountMap;
2948 QHash<QString, QgsFeatureIds> mSymbolFeatureIdMap;
2949
2951 bool mEditCommandActive = false;
2952
2954 bool mCommitChangesActive = false;
2955
2956 bool mReadExtentFromXml;
2957 QgsRectangle mXmlExtent2D;
2958 QgsBox3D mXmlExtent3D;
2959
2960 QgsFeatureIds mDeletedFids;
2961
2962 QgsAttributeTableConfig mAttributeTableConfig;
2963
2964 mutable QMutex mFeatureSourceConstructorMutex;
2965
2966 QgsVectorLayerFeatureCounter *mFeatureCounter = nullptr;
2967
2968 std::unique_ptr<QgsGeometryOptions> mGeometryOptions;
2969
2970 bool mAllowCommit = true;
2971
2973 QgsStoredExpressionManager *mStoredExpressionManager = nullptr;
2974
2976
2978 bool mDataChangedFired = false;
2979
2980 QList<QgsWeakRelation> mWeakRelations;
2981
2982 bool mSetLegendFromStyle = false;
2983
2984 QList< QgsFeatureRendererGenerator * > mRendererGenerators;
2985
2987 QTimer *mRefreshRendererTimer = nullptr;
2988
2992 bool mLoadAllStoredStyle = false;
2993
2994};
2995
2996
2997
2998// clazy:excludeall=qstring-allocations
2999
3000#endif
The Qgis class provides global constants for use throughout the application.
Definition qgis.h:54
GeometryOperationResult
Success or failure of a geometry operation.
Definition qgis.h:1596
SpatialIndexPresence
Enumeration of spatial index presence states.
Definition qgis.h:349
FieldDomainSplitPolicy
Split policy for field domains.
Definition qgis.h:3160
GeometryType
The geometry types are used to group Qgis::WkbType in a coarse way.
Definition qgis.h:255
VertexMarkerType
Editing vertex markers, used for showing vertices during a edit operation.
Definition qgis.h:1401
WkbType
The WKB type describes the number of dimensions a geometry has.
Definition qgis.h:182
@ Unknown
Unknown.
FieldConfigurationFlag
Configuration flags for fields These flags are meant to be user-configurable and are not describing a...
Definition qgis.h:1289
SelectBehavior
Specifies how a selection should be applied.
Definition qgis.h:1339
@ SetSelection
Set selection, removing any existing selection.
Abstract base class for simplify geometries using a specific algorithm.
Abstract base class for objects which generate elevation profiles.
Interface for classes which can generate elevation profiles.
Abstract base class - its implementations define different approaches to the labeling of a vector lay...
Storage and management of actions associated with a layer.
Utility class for calculating aggregates for a field (or expression) over the features from a vector ...
This is a container for configuration of the attribute table.
Class allowing to manage the auxiliary storage for a vector layer.
Class providing some utility methods to manage auxiliary storage.
A 3-dimensional box composed of x, y, z coordinates.
Definition qgsbox3d.h:43
The QgsConditionalLayerStyles class holds conditional style information for a layer.
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
Abstract base class for curved geometry type.
Definition qgscurve.h:35
Abstract base class for spatial data provider implementations.
The QgsDefaultValue class provides a container for managing client side default values for fields.
Stores the settings for rendering of all diagrams for a layer.
Evaluates and returns the diagram settings relating to a diagram for a specific feature.
Contains configuration settings for an editor form.
Holder for the widget type and its configuration for a field.
Manages an editor widget Widget and wrapper share the same parent.
Abstract interface for generating an expression context.
virtual QgsExpressionContext createExpressionContext() const =0
This method needs to be reimplemented in all classes which implement this interface and return an exp...
Abstract interface for generating an expression context scope.
Single scope for storing variables and functions for use within a QgsExpressionContext.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
Buffers information about expression fields for a vector layer.
Wrapper for iterator of features from vector data provider or vector layer.
bool nextFeature(QgsFeature &f)
Fetch next feature and stores in f, returns true on success.
An interface for objects which generate feature renderers for vector layers.
This class wraps a request for features to a vector layer (or directly its vector data provider).
An interface for objects which accept features via addFeature(s) methods.
virtual bool addFeature(QgsFeature &feature, QgsFeatureSink::Flags flags=QgsFeatureSink::Flags())
Adds a single feature to the sink.
An interface for objects which provide features via a getFeatures method.
virtual QSet< QVariant > uniqueValues(int fieldIndex, int limit=-1) const
Returns the set of unique values contained within the specified fieldIndex from this source.
virtual Qgis::WkbType wkbType() const =0
Returns the geometry type for features returned by this source.
virtual Qgis::SpatialIndexPresence hasSpatialIndex() const
Returns an enum value representing the presence of a valid spatial index on the source,...
virtual QgsFeatureIterator getFeatures(const QgsFeatureRequest &request=QgsFeatureRequest()) const =0
Returns an iterator for the features in the source.
virtual long long featureCount() const =0
Returns the number of features contained in the source, or -1 if the feature count is unknown.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition qgsfeature.h:56
Base class for feedback objects to be used for cancellation of something running in a worker thread.
Definition qgsfeedback.h:44
ConstraintStrength
Strength of constraints.
@ ConstraintStrengthHard
Constraint must be honored before feature can be accepted.
Constraint
Constraints which may be present on a field.
Encapsulate a field in an attribute table or data source.
Definition qgsfield.h:53
Container of fields for a vector layer.
Definition qgsfields.h:45
QgsAttributeList allAttributesList() const
Utility function to get list of attribute indexes.
The QgsGeometryOptions class contains options to automatically adjust geometries to constraints on a ...
A geometry is the spatial representation of a feature.
Base class for storage of map layer elevation properties.
Base class for utility classes that encapsulate information necessary for rendering of map layers.
Base class for storage of map layer selection properties.
Base class for storage of map layer temporal properties.
Base class for all map layer types.
Definition qgsmaplayer.h:75
virtual bool accept(QgsStyleEntityVisitorInterface *visitor) const
Accepts the specified symbology visitor, causing it to visit all symbols associated with the layer.
virtual bool setDependencies(const QSet< QgsMapLayerDependency > &layers)
Sets the list of dependencies.
virtual void setExtent3D(const QgsBox3D &box)
Sets the extent.
virtual QSet< QgsMapLayerDependency > dependencies() const
Gets the list of dependencies.
friend class QgsVectorLayer
virtual bool isEditable() const
Returns true if the layer can be edited.
virtual QgsMapLayer * clone() const =0
Returns a new instance equivalent to this one except for the id which is still unique.
virtual void setExtent(const QgsRectangle &rect)
Sets the extent.
virtual void setTransformContext(const QgsCoordinateTransformContext &transformContext)=0
Sets the coordinate transform context to transformContext.
Perform transforms between map coordinates and device coordinates.
Contains settings for how a map layer will be labeled.
A class to represent a 2D point.
Definition qgspointxy.h:60
Point geometry type, with support for z-dimension and m-values.
Definition qgspoint.h:49
Encapsulates properties and constraints relating to fetching elevation profiles from different source...
Encapsulates a QGIS project, including sets of map layers and their styles, layouts,...
Definition qgsproject.h:107
The class is used as a container of context for various read/write operations on other objects.
A rectangle specified with double values.
This class manages a set of relations between layers.
Contains information about the context of a rendering operation.
A boolean settings entry.
A double settings entry.
A template class for enum and flag settings entry.
Manages stored expressions regarding creation, modification and storing in the project.
An interface for classes which can visit style entity (e.g.
Abstract base class for all rendered symbols.
Definition qgssymbol.h:94
This is the base class for vector data providers.
The edit buffer group manages a group of edit buffers.
Vector layer specific subclass of QgsMapLayerElevationProperties.
Counts the features in a QgsVectorLayer in task.
Partial snapshot of vector layer's state (only the members necessary for access to features)
Manages joined fields for a vector layer.
Defines left outer join from our vector layer to some other vector layer.
Implementation of layer selection properties for vector layers.
Implementation of map layer temporal properties for vector layers.
Represents a vector layer which manages a vector based data sets.
void committedFeaturesAdded(const QString &layerId, const QgsFeatureList &addedFeatures)
Emitted when features are added to the provider if not in transaction mode.
void labelingFontNotFound(QgsVectorLayer *layer, const QString &fontfamily)
Emitted when the font family defined for labeling layer is not found on system.
void featureBlendModeChanged(QPainter::CompositionMode blendMode)
Signal emitted when setFeatureBlendMode() is called.
void beforeRemovingExpressionField(int idx)
Will be emitted, when an expression field is going to be deleted from this vector layer.
void committedGeometriesChanges(const QString &layerId, const QgsGeometryMap &changedGeometries)
Emitted when geometry changes are saved to the provider if not in transaction mode.
void beforeCommitChanges(bool stopEditing)
Emitted before changes are committed to the data provider.
void attributeAdded(int idx)
Will be emitted, when a new attribute has been added to this vector layer.
QgsAbstractVectorLayerLabeling * labeling()
Access to labeling configuration.
void allowCommitChanged()
Emitted whenever the allowCommitChanged() property of this layer changes.
void editCommandStarted(const QString &text)
Signal emitted when a new edit command has been started.
const QgsDiagramLayerSettings * diagramLayerSettings() const
const QgsVectorLayerJoinBuffer * joinBuffer() const
Returns a const pointer on join buffer object.
void editCommandDestroyed()
Signal emitted, when an edit command is destroyed.
QgsVectorLayer(const QgsVectorLayer &rhs)=delete
QgsVectorLayer cannot be copied.
void featuresDeleted(const QgsFeatureIds &fids)
Emitted when features have been deleted.
void subsetStringChanged()
Emitted when the layer's subset string has changed.
void committedFeaturesRemoved(const QString &layerId, const QgsFeatureIds &deletedFeatureIds)
Emitted when features are deleted from the provider if not in transaction mode.
void symbolFeatureCountMapChanged()
Emitted when the feature count for symbols on this layer has been recalculated.
void writeCustomSymbology(QDomElement &element, QDomDocument &doc, QString &errorMessage) const
Signal emitted whenever the symbology (QML-file) for this layer is being written.
void attributeDeleted(int idx)
Will be emitted, when an attribute has been deleted from this vector layer.
QgsVectorLayer & operator=(QgsVectorLayer const &rhs)=delete
QgsVectorLayer cannot be copied.
QgsFeatureRenderer * renderer()
Returns the feature renderer used for rendering the features in the layer in 2D map views.
void beforeEditingStarted()
Emitted before editing on this layer is started.
void committedAttributeValuesChanges(const QString &layerId, const QgsChangedAttributesMap &changedAttributesValues)
Emitted when attribute value changes are saved to the provider if not in transaction mode.
void committedAttributesAdded(const QString &layerId, const QList< QgsField > &addedAttributes)
Emitted when attributes are added to the provider if not in transaction mode.
void committedAttributesDeleted(const QString &layerId, const QgsAttributeList &deletedAttributes)
Emitted when attributes are deleted from the provider if not in transaction mode.
void displayExpressionChanged()
Emitted when the display expression changes.
const QgsActionManager * actions() const
Returns all layer actions defined on this layer.
void editFormConfigChanged()
Will be emitted whenever the edit form configuration of this layer changes.
void afterCommitChanges()
Emitted after changes are committed to the data provider.
QgsFeature getFeature(QgsFeatureId fid) const
Queries the layer for the feature with the given id.
void raiseError(const QString &msg)
Signals an error related to this vector layer.
void editCommandEnded()
Signal emitted, when an edit command successfully ended.
void supportsEditingChanged()
Emitted when the read only state or the data provider of this layer is changed.
void readOnlyChanged()
Emitted when the read only state of this layer is changed.
void attributeValueChanged(QgsFeatureId fid, int idx, const QVariant &value)
Emitted whenever an attribute value change is done in the edit buffer.
QgsFeatureIterator getFeatures(const QgsFeatureIds &fids)
Queries the layer for the features with the given ids.
void afterRollBack()
Emitted after changes are rolled back.
const QgsVectorSimplifyMethod & simplifyMethod() const
Returns the simplification settings for fast rendering of features.
void selectionChanged(const QgsFeatureIds &selected, const QgsFeatureIds &deselected, bool clearAndSelect)
Emitted when selection was changed.
void beforeAddingExpressionField(const QString &fieldName)
Will be emitted, when an expression field is going to be added to this vector layer.
void updatedFields()
Emitted whenever the fields available from this layer have been changed.
void featureAdded(QgsFeatureId fid)
Emitted when a new feature has been added to the layer.
void featureDeleted(QgsFeatureId fid)
Emitted when a feature has been deleted.
void readCustomSymbology(const QDomElement &element, QString &errorMessage)
Signal emitted whenever the symbology (QML-file) for this layer is being read.
const QgsVectorLayerEditBuffer * editBuffer() const
Buffer with uncommitted editing operations.
void beforeRollBack()
Emitted before changes are rolled back.
void geometryChanged(QgsFeatureId fid, const QgsGeometry &geometry)
Emitted whenever a geometry change is done in the edit buffer.
QgsFeatureIterator getFeatures(const QgsRectangle &rectangle)
Queries the layer for the features which intersect the specified rectangle.
const QgsFeatureRenderer * renderer() const
Returns the feature renderer used for rendering the features in the layer in 2D map views.
void beforeModifiedCheck() const
Emitted when the layer is checked for modifications. Use for last-minute additions.
const QgsDiagramRenderer * diagramRenderer() const
This class contains information how to simplify geometries fetched from a vector layer.
SimplifyHint
Simplification flags for fast rendering of features.
The QgsWeakRelation class represent a QgsRelation with possibly unresolved layers or unmatched fields...
#define str(x)
Definition qgis.cpp:38
QMap< QString, QString > QgsStringMap
Definition qgis.h:5674
#define SIP_DEPRECATED
Definition qgis_sip.h:106
#define SIP_SKIP
Definition qgis_sip.h:126
#define FINAL
Definition qgis_sip.h:242
#define SIP_PYNAME(name)
Definition qgis_sip.h:81
#define SIP_PYARGREMOVE
Definition qgis_sip.h:151
#define SIP_TRANSFER
Definition qgis_sip.h:36
#define SIP_OUT
Definition qgis_sip.h:58
#define SIP_FACTORY
Definition qgis_sip.h:76
QVector< QgsPoint > QgsPointSequence
QMap< int, QVariant > QgsAttributeMap
QMap< QgsFeatureId, QgsGeometry > QgsGeometryMap
Definition qgsfeature.h:912
QMap< QgsFeatureId, QgsAttributeMap > QgsChangedAttributesMap
Definition qgsfeature.h:903
QList< QgsFeature > QgsFeatureList
Definition qgsfeature.h:917
QSet< QgsFeatureId > QgsFeatureIds
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features
QList< int > QgsAttributeList
Definition qgsfield.h:27
QList< int > QgsAttributeList
QSet< int > QgsAttributeIds
Context for cascade delete features.
DeleteContext(bool cascade=false, QgsProject *project=nullptr)
Constructor for DeleteContext.
Setting options for loading vector layers.
LayerOptions(bool loadDefaultStyle=true, bool readExtentFromXml=false)
Constructor for LayerOptions.
LayerOptions(const QgsCoordinateTransformContext &transformContext, bool loadDefaultStyle=true, bool readExtentFromXml=false)
Constructor for LayerOptions.
QgsCoordinateReferenceSystem fallbackCrs
Fallback layer coordinate reference system.