#include <qgsvectorlayer.h>
Inheritance diagram for QgsVectorLayer:
Definition at line 57 of file qgsvectorlayer.h.
Public Types | |
| enum | EditType { LineEdit, UniqueValues, UniqueValuesEditable, ValueMap, Classification, EditRange, SliderRange, FileName } |
Public Slots | |
| void | select (int featureId, bool emitSignal=TRUE) |
| Select feature by its ID, optionally emit signal selectionChanged(). | |
| void | deselect (int featureId, bool emitSignal=TRUE) |
| Deselect feature by its ID, optionally emit signal selectionChanged(). | |
| void | removeSelection (bool emitSignal=TRUE) |
| Clear selection. | |
| void | triggerRepaint () |
| virtual void | updateExtents () |
| Update the extents for the layer. | |
Signals | |
| void | selectionChanged () |
| This signal is emited when selection was changed. | |
| void | layerModified (bool onlyGeometry) |
| This signal is emitted when modifications has been done on layer. | |
| void | editingStarted () |
| void | editingStopped () |
| void | attributeAdded (int idx) |
| void | attributeDeleted (int idx) |
| void | featureDeleted (int fid) |
| void | layerDeleted () |
| void | attributeValueChanged (int fid, int idx, const QVariant &) |
Public Member Functions | |
| QgsVectorLayer (QString path=0, QString baseName=0, QString providerLib=0, bool loadDefaultStyleFlag=true) | |
| Constructor. | |
| virtual | ~QgsVectorLayer () |
| Destructor. | |
| QString | storageType () const |
| Returns the permanent storage type for this layer as a friendly name. | |
| QString | capabilitiesString () const |
| Capabilities for this layer in a friendly format. | |
| QString | dataComment () const |
| Returns a comment for the data in the layer. | |
| void | setDisplayField (QString fldName=0) |
| Set the primary display field to be used in the identify results dialog. | |
| const QString | displayField () const |
| Returns the primary display field name used in the identify results dialog. | |
| QgsVectorDataProvider * | dataProvider () |
| Returns the data provider. | |
| const QgsVectorDataProvider * | dataProvider () const |
| Returns the data provider in a const-correct manner. | |
| void | setProviderEncoding (const QString &encoding) |
| Sets the textencoding of the data provider. | |
| void | setCoordinateSystem () |
| Setup the coordinate system tranformation for the layer. | |
| QgsLabel * | label () |
| Get the label object associated with this layer. | |
| const QgsLabel * | label () const |
| QgsAttributeAction * | actions () |
| int | selectedFeatureCount () |
| The number of features that are selected in this layer. | |
| void | select (QgsRectangle &rect, bool lock) |
| Select features found within the search rectangle (in layer's coordinates). | |
| void | invertSelection () |
| Select not selected features and deselect selected ones. | |
| void | invertSelectionInRectangle (QgsRectangle &rect) |
| Invert selection of features found within the search rectangle (in layer's coordinates). | |
| QgsFeatureList | selectedFeatures () |
| Get a copy of the user-selected features. | |
| const QgsFeatureIds & | selectedFeaturesIds () const |
| Return reference to identifiers of selected features. | |
| void | setSelectedFeatures (const QgsFeatureIds &ids) |
| Change selection to the new set of features. | |
| QgsRectangle | boundingBoxOfSelected () |
| Returns the bounding box of the selected features. | |
| bool | copySymbologySettings (const QgsMapLayer &other) |
| Copies the symbology settings from another layer. | |
| bool | hasCompatibleSymbology (const QgsMapLayer &other) const |
| Returns true if this layer can be in the same symbology group with another layer. | |
| const QgsRenderer * | renderer () const |
| Returns a pointer to the renderer. | |
| void | setRenderer (QgsRenderer *r) |
| Sets the renderer. | |
| QGis::GeometryType | geometryType () const |
| Returns point, line or polygon. | |
| QGis::WkbType | wkbType () const |
| Returns the WKBType or WKBUnknown in case of error. | |
| QString | providerType () const |
| Return the provider type for this layer. | |
| virtual bool | readXml (QDomNode &layer_node) |
| reads vector layer specific state from project file Dom node. | |
| virtual bool | writeXml (QDomNode &layer_node, QDomDocument &doc) |
| write vector layer specific state to project file Dom node. | |
| bool | readSymbology (const QDomNode &node, QString &errorMessage) |
| Read the symbology for the current layer from the Dom node supplied. | |
| bool | writeSymbology (QDomNode &, QDomDocument &doc, QString &errorMessage) const |
| Write the symbology for the layer into the docment provided. | |
| virtual long | featureCount () const |
| Number of features in the layer. | |
| virtual long | updateFeatureCount () const |
| Update the feature count. | |
| virtual void | setSubsetString (QString subset) |
| Set the string (typically sql) used to define a subset of the layer. | |
| virtual QString | subsetString () |
| Get the string (typically sql) used to define a subset of the layer. | |
| void | select (QgsAttributeList fetchAttributes, QgsRectangle rect=QgsRectangle(), bool fetchGeometry=true, bool useIntersect=false) |
| bool | nextFeature (QgsFeature &feature) |
| bool | featureAtId (int featureId, QgsFeature &f, bool fetchGeometries=true, bool fetchAttributes=true) |
| Gets the feature at the given feature id. | |
| bool | addFeature (QgsFeature &f, bool alsoUpdateExtent=TRUE) |
| Adds a feature. | |
| bool | insertVertex (double x, double y, int atFeatureId, int beforeVertex) |
| Insert a new vertex before the given vertex number, in the given ring, item (first number is index 0), and feature Not meaningful for Point geometries. | |
| bool | moveVertex (double x, double y, int atFeatureId, int atVertex) |
| Moves the vertex at the given position number, ring and item (first number is index 0), and feature to the given coordinates. | |
| bool | deleteVertex (int atFeatureId, int atVertex) |
| Deletes a vertex from a feature. | |
| bool | deleteSelectedFeatures () |
| Deletes the selected features. | |
| int | addRing (const QList< QgsPoint > &ring) |
| Adds a ring to polygon/multipolygon features. | |
| int | addIsland (const QList< QgsPoint > &ring) |
| Adds a new island polygon to a multipolygon feature. | |
| int | translateFeature (int featureId, double dx, double dy) |
| Translates feature by dx, dy. | |
| int | splitFeatures (const QList< QgsPoint > &splitLine, bool topologicalEditing=false) |
| Splits features cut by the given line. | |
| int | removePolygonIntersections (QgsGeometry *geom) |
| Changes the specified geometry such that it has no intersections with other polygon (or multipolygon) geometries in this vector layer. | |
| int | addTopologicalPoints (QgsGeometry *geom) |
| Adds topological points for every vertex of the geometry. | |
| int | addTopologicalPoints (const QgsPoint &p) |
| Adds a vertex to segments which intersect point p but don't already have a vertex there. | |
| int | insertSegmentVerticesForSnap (const QList< QgsSnappingResult > &snapResults) |
| Inserts vertices to the snapped segments. | |
| void | enableLabels (bool on) |
| Set labels on. | |
| bool | hasLabelsEnabled (void) const |
| Label is on. | |
| virtual bool | isEditable () const |
| Returns true if the provider is in editing mode. | |
| virtual bool | isModified () const |
| Returns true if the provider has been modified since the last commit. | |
| bool | snapPoint (QgsPoint &point, double tolerance) |
| Snaps a point to the closest vertex if there is one within the snapping tolerance. | |
| int | snapWithContext (const QgsPoint &startPoint, double snappingTolerance, QMultiMap< double, QgsSnappingResult > &snappingResults, QgsSnapper::SnappingType snap_to) |
| Snaps to segment or vertex within given tolerance. | |
| bool | draw (QgsRenderContext &rendererContext) |
| Draws the layer. | |
| void | drawLabels (QgsRenderContext &rendererContext) |
| Draws the layer labels using coordinate transformation. | |
| const QgsFieldMap & | pendingFields () const |
| returns field list in the to-be-committed state | |
| QgsAttributeList | pendingAllAttributesList () |
| returns list of attributes | |
| int | pendingFeatureCount () |
| returns feature count after commit | |
| void | setModified (bool modified=TRUE, bool onlyGeometryWasModified=FALSE) |
| Sets whether some features are modified or not. | |
| bool | startEditing () |
| Make layer editable. | |
| bool | changeAttributeValue (int fid, int field, QVariant value, bool emitSignal=true) |
| changed an attribute value (but does not commit it | |
| bool | addAttribute (QString name, QString type) |
| add an attribute field (but does not commit it) returns the field index or -1 in case of failure | |
| bool | deleteAttribute (int attr) |
| delete an attribute field (but does not commit it) | |
| bool | addFeatures (QgsFeatureList features, bool makeSelected=TRUE) |
| Insert a copy of the given features into the layer (but does not commit it). | |
| bool | deleteFeature (int fid) |
| delete a feature from the layer (but does not commit it) | |
| bool | commitChanges () |
| Attempts to commit any changes to disk. | |
| const QStringList & | commitErrors () |
| bool | rollBack () |
| Stop editing and discard the edits. | |
| EditType | editType (int idx) |
| get edit type | |
| void | setEditType (int idx, EditType edit) |
| set edit type | |
| QMap< QString, QVariant > & | valueMap (int idx) |
| access value map | |
| RangeData & | range (int idx) |
| access range | |
Private Types | |
| enum | VertexMarkerType { SemiTransparentCircle, Cross } |
Private Member Functions | |
| QgsVectorLayer (QgsVectorLayer const &rhs) | |
| vector layers are not copyable | |
| QgsVectorLayer & | operator= (QgsVectorLayer const &rhs) |
| vector layers are not copyable | |
| bool | setDataProvider (QString const &provider) |
| bind layer to a specific data provider | |
| void | drawFeature (QPainter *p, QgsFeature &fet, const QgsMapToPixel *cXf, const QgsCoordinateTransform *ct, QImage *marker, double widthScale, double markerScaleFactor, bool drawingToEditingCanvas) |
| Draws features. | |
| void | transformPoint (double &x, double &y, const QgsMapToPixel *mtp, const QgsCoordinateTransform *ct) |
| Convenience function to transform the given point. | |
| void | transformPoints (std::vector< double > &x, std::vector< double > &y, std::vector< double > &z, const QgsMapToPixel *mtp, const QgsCoordinateTransform *ct) |
| unsigned char * | drawLineString (unsigned char *WKBlinestring, QPainter *p, const QgsMapToPixel *mtp, const QgsCoordinateTransform *ct, bool drawingToEditingCanvas) |
| Draw the linestring as given in the WKB format. | |
| unsigned char * | drawPolygon (unsigned char *WKBpolygon, QPainter *p, const QgsMapToPixel *mtp, const QgsCoordinateTransform *ct, bool drawingToEditingCanvas) |
| Draw the polygon as given in the WKB format. | |
| int | findFreeId () |
| Goes through all features and finds a free id (e.g. | |
| void | deleteCachedGeometries () |
| Deletes the geometries in mCachedGeometries. | |
| void | drawVertexMarker (int x, int y, QPainter &p, QgsVectorLayer::VertexMarkerType type) |
| Draws a vertex symbol at (screen) coordinates x, y. | |
| void | snapToGeometry (const QgsPoint &startPoint, int featureId, QgsGeometry *geom, double sqrSnappingTolerance, QMultiMap< double, QgsSnappingResult > &snappingResults, QgsSnapper::SnappingType snap_to) const |
| Snaps to a geometry and adds the result to the multimap if it is within the snapping result. | |
| int | boundingBoxFromPointList (const QList< QgsPoint > &list, double &xmin, double &ymin, double &xmax, double &ymax) const |
| Little helper function that gives bounding box from a list of points. | |
| QgsVectorLayer::VertexMarkerType | currentVertexMarkerType () |
| Reads vertex marker type from settings. | |
| void | updateFeatureAttributes (QgsFeature &f) |
| Update feature with uncommited attribute updates. | |
| void | updateFeatureGeometry (QgsFeature &f) |
| Update feature with uncommited geometry updates. | |
Private Attributes | |
| int | mUpdateThreshold |
| Update threshold for drawing features as they are read. | |
| QgsVectorDataProvider * | mDataProvider |
| Pointer to data provider derived from the abastract base class QgsDataProvider. | |
| QString | mDisplayField |
| index of the primary label field | |
| QString | mProviderKey |
| Data provider key. | |
| QgsAttributeAction * | mActions |
| The user-defined actions that are accessed from the Identify Results dialog box. | |
| bool | mEditable |
| Flag indicating whether the layer is in editing mode or not. | |
| bool | mModified |
| Flag indicating whether the layer has been modified since the last commit. | |
| QgsGeometryMap | mCachedGeometries |
| cache of the committed geometries retrieved *for the current display* | |
| QgsFeatureIds | mSelectedFeatureIds |
| Set holding the feature IDs that are activated. | |
| QgsFeatureIds | mDeletedFeatureIds |
| Deleted feature IDs which are not commited. | |
| QgsFeatureList | mAddedFeatures |
| New features which are not commited. | |
| QgsChangedAttributesMap | mChangedAttributeValues |
| Changed attributes values which are not commited. | |
| QgsAttributeIds | mDeletedAttributeIds |
| deleted attributes fields which are not commited | |
| QgsAttributeIds | mAddedAttributeIds |
| added attributes fields which are not commited | |
| QgsGeometryMap | mChangedGeometries |
| Changed geometries which are not commited. | |
| QgsFieldMap | mUpdatedFields |
| field map to commit | |
| int | mMaxUpdatedIndex |
| max field index | |
| int | mWkbType |
| Geometry type as defined in enum WkbType (qgis.h). | |
| QgsRenderer * | mRenderer |
| Renderer object which holds the information about how to display the features. | |
| QgsLabel * | mLabel |
| Label. | |
| bool | mLabelOn |
| Display labels. | |
| QStringList | mCommitErrors |
| QMap< QString, EditType > | mEditTypes |
| QMap< QString, QMap< QString, QVariant > > | mValueMaps |
| QMap< QString, RangeData > | mRanges |
| bool | mFetching |
| QgsRectangle | mFetchRect |
| QgsAttributeList | mFetchAttributes |
| bool | mFetchGeometry |
| QSet< int > | mFetchConsidered |
| QgsGeometryMap::iterator | mFetchChangedGeomIt |
| QgsFeatureList::iterator | mFetchAddedFeaturesIt |
Classes | |
| struct | RangeData |
| LineEdit | |
| UniqueValues | |
| UniqueValuesEditable | |
| ValueMap | |
| Classification | |
| EditRange | |
| SliderRange | |
| FileName |
Definition at line 62 of file qgsvectorlayer.h.
enum QgsVectorLayer::VertexMarkerType [private] |
| QgsVectorLayer::QgsVectorLayer | ( | QString | path = 0, |
|
| QString | baseName = 0, |
|||
| QString | providerLib = 0, |
|||
| bool | loadDefaultStyleFlag = true | |||
| ) |
Constructor.
Definition at line 88 of file qgsvectorlayer.cpp.
References geometryType(), QgsMapLayer::loadDefaultStyle(), mActions, mProviderKey, QgsMapLayer::mValid, renderer(), setCoordinateSystem(), setDataProvider(), and setRenderer().
| QgsVectorLayer::~QgsVectorLayer | ( | ) | [virtual] |
Destructor.
Definition at line 148 of file qgsvectorlayer.cpp.
References deleteCachedGeometries(), layerDeleted(), mActions, mDataProvider, mLabel, mRenderer, QgsMapLayer::mValid, and QgsDebugMsg.
| QgsVectorLayer::QgsVectorLayer | ( | QgsVectorLayer const & | rhs | ) | [private] |
vector layers are not copyable
| QString QgsVectorLayer::storageType | ( | ) | const |
Returns the permanent storage type for this layer as a friendly name.
Definition at line 171 of file qgsvectorlayer.cpp.
References mDataProvider, and QgsVectorDataProvider::storageType().
| QString QgsVectorLayer::capabilitiesString | ( | ) | const |
Capabilities for this layer in a friendly format.
Definition at line 181 of file qgsvectorlayer.cpp.
References QgsVectorDataProvider::capabilitiesString(), and mDataProvider.
| QString QgsVectorLayer::dataComment | ( | ) | const |
Returns a comment for the data in the layer.
Definition at line 190 of file qgsvectorlayer.cpp.
References QgsVectorDataProvider::dataComment(), and mDataProvider.
| void QgsVectorLayer::setDisplayField | ( | QString | fldName = 0 |
) |
Set the primary display field to be used in the identify results dialog.
Definition at line 208 of file qgsvectorlayer.cpp.
References mDisplayField, pendingFields(), and QgsDebugMsg.
Referenced by readSymbology(), and setDataProvider().
| const QString QgsVectorLayer::displayField | ( | ) | const |
Returns the primary display field name used in the identify results dialog.
Definition at line 3478 of file qgsvectorlayer.cpp.
References mDisplayField.
Referenced by writeSymbology().
| QgsVectorDataProvider * QgsVectorLayer::dataProvider | ( | ) |
Returns the data provider.
Definition at line 914 of file qgsvectorlayer.cpp.
References mDataProvider.
Referenced by QgsLegendModel::addVectorLayerItems(), nextFeature(), QgsUniqueValueRenderer::readXML(), QgsGraduatedSymbolRenderer::readXML(), QgsContinuousColorRenderer::readXML(), QgsProjectFileTransform::transform0110to1000(), QgsVectorFileWriter::writeAsShapefile(), QgsUniqueValueRenderer::writeXML(), QgsGraduatedSymbolRenderer::writeXML(), and QgsContinuousColorRenderer::writeXML().
| const QgsVectorDataProvider * QgsVectorLayer::dataProvider | ( | ) | const |
Returns the data provider in a const-correct manner.
Definition at line 919 of file qgsvectorlayer.cpp.
References mDataProvider.
| void QgsVectorLayer::setProviderEncoding | ( | const QString & | encoding | ) |
Sets the textencoding of the data provider.
Definition at line 924 of file qgsvectorlayer.cpp.
References mDataProvider, and QgsVectorDataProvider::setEncoding().
| void QgsVectorLayer::setCoordinateSystem | ( | ) |
Setup the coordinate system tranformation for the layer.
Definition at line 3424 of file qgsvectorlayer.cpp.
References QgsDataProvider::crs(), QgsCoordinateReferenceSystem::isValid(), QgsMapLayer::mCRS, mDataProvider, QgsDebugMsg, and QgsCoordinateReferenceSystem::validate().
Referenced by QgsVectorLayer().
| QgsLabel * QgsVectorLayer::label | ( | ) |
Get the label object associated with this layer.
Definition at line 1997 of file qgsvectorlayer.cpp.
References mLabel.
Referenced by drawLabels(), readSymbology(), QgsQuickPrint::scaleTextLabels(), and writeSymbology().
| const QgsLabel * QgsVectorLayer::label | ( | ) | const |
| QgsAttributeAction* QgsVectorLayer::actions | ( | ) | [inline] |
Definition at line 124 of file qgsvectorlayer.h.
| int QgsVectorLayer::selectedFeatureCount | ( | ) |
The number of features that are selected in this layer.
Definition at line 2941 of file qgsvectorlayer.cpp.
References mSelectedFeatureIds.
| void QgsVectorLayer::select | ( | QgsRectangle & | rect, | |
| bool | lock | |||
| ) |
Select features found within the search rectangle (in layer's coordinates).
Definition at line 833 of file qgsvectorlayer.cpp.
References QgsFeature::id(), nextFeature(), QgsRectangle::normalize(), removeSelection(), and selectionChanged().
Referenced by addRing(), boundingBoxOfSelected(), draw(), drawLabels(), invertSelection(), invertSelectionInRectangle(), removePolygonIntersections(), snapWithContext(), splitFeatures(), and updateExtents().
| void QgsVectorLayer::invertSelection | ( | ) |
Select not selected features and deselect selected ones.
Definition at line 855 of file qgsvectorlayer.cpp.
References QgsFeature::id(), mSelectedFeatureIds, nextFeature(), removeSelection(), select(), and selectionChanged().
| void QgsVectorLayer::invertSelectionInRectangle | ( | QgsRectangle & | rect | ) |
Invert selection of features found within the search rectangle (in layer's coordinates).
Definition at line 878 of file qgsvectorlayer.cpp.
References deselect(), QgsFeature::id(), mSelectedFeatureIds, nextFeature(), QgsRectangle::normalize(), select(), and selectionChanged().
| QgsFeatureList QgsVectorLayer::selectedFeatures | ( | ) |
Get a copy of the user-selected features.
Definition at line 2952 of file qgsvectorlayer.cpp.
References QgsVectorDataProvider::attributeIndexes(), QgsVectorDataProvider::featureAtId(), mAddedFeatures, mDataProvider, mSelectedFeatureIds, updateFeatureAttributes(), and updateFeatureGeometry().
Referenced by splitFeatures().
| const QgsFeatureIds & QgsVectorLayer::selectedFeaturesIds | ( | ) | const |
Return reference to identifiers of selected features.
Definition at line 2946 of file qgsvectorlayer.cpp.
References mSelectedFeatureIds.
Referenced by splitFeatures(), and QgsVectorFileWriter::writeAsShapefile().
| void QgsVectorLayer::setSelectedFeatures | ( | const QgsFeatureIds & | ids | ) |
Change selection to the new set of features.
Definition at line 2934 of file qgsvectorlayer.cpp.
References mSelectedFeatureIds, and selectionChanged().
| QgsRectangle QgsVectorLayer::boundingBoxOfSelected | ( | ) |
Returns the bounding box of the selected features.
If there is no selection, QgsRectangle(0,0,0,0) is returned
Definition at line 1006 of file qgsvectorlayer.cpp.
References QgsGeometry::boundingBox(), QgsRectangle::combineExtentWith(), QgsFeature::geometry(), QgsRectangle::height(), QgsFeature::id(), mSelectedFeatureIds, nextFeature(), select(), QgsRectangle::set(), QgsRectangle::setMinimal(), QgsRectangle::width(), QgsRectangle::xMaximum(), QgsRectangle::xMinimum(), QgsRectangle::yMaximum(), and QgsRectangle::yMinimum().
Referenced by QgsMapCanvas::zoomToSelected().
| bool QgsVectorLayer::copySymbologySettings | ( | const QgsMapLayer & | other | ) | [virtual] |
Copies the symbology settings from another layer.
Returns true in case of success
Implements QgsMapLayer.
Definition at line 3038 of file qgsvectorlayer.cpp.
References QgsRenderer::clone(), and mRenderer.
| bool QgsVectorLayer::hasCompatibleSymbology | ( | const QgsMapLayer & | other | ) | const [virtual] |
Returns true if this layer can be in the same symbology group with another layer.
Implements QgsMapLayer.
Definition at line 3066 of file qgsvectorlayer.cpp.
References QgsVectorDataProvider::fields(), mDataProvider, QgsMapLayer::name(), and QgsMapLayer::type().
| const QgsRenderer * QgsVectorLayer::renderer | ( | ) | const |
Returns a pointer to the renderer.
Definition at line 933 of file qgsvectorlayer.cpp.
References mRenderer.
Referenced by QgsLegendModel::addVectorLayerItems(), QgsQuickPrint::printMap(), QgsVectorLayer(), readSymbology(), QgsQuickPrint::scalePointSymbols(), QgsLegendModel::updateVectorClassificationItem(), and writeSymbology().
| void QgsVectorLayer::setRenderer | ( | QgsRenderer * | r | ) |
Sets the renderer.
If a renderer is already present, it is deleted
Definition at line 938 of file qgsvectorlayer.cpp.
References mRenderer.
Referenced by QgsVectorLayer(), QgsUniqueValueRenderer::readXML(), QgsSingleSymbolRenderer::readXML(), QgsGraduatedSymbolRenderer::readXML(), and QgsContinuousColorRenderer::readXML().
| QGis::GeometryType QgsVectorLayer::geometryType | ( | ) | const |
Returns point, line or polygon.
Definition at line 947 of file qgsvectorlayer.cpp.
References QgsLogger::debug(), QgsVectorDataProvider::geometryType(), QGis::Line, mDataProvider, QGis::Point, QGis::Polygon, QgsDebugMsg, QgsMapLayer::type(), QGis::UnknownGeometry, QGis::WKBLineString, QGis::WKBLineString25D, QGis::WKBMultiLineString, QGis::WKBMultiLineString25D, QGis::WKBMultiPoint, QGis::WKBMultiPoint25D, QGis::WKBMultiPolygon, QGis::WKBMultiPolygon25D, QGis::WKBPoint, QGis::WKBPoint25D, QGis::WKBPolygon, and QGis::WKBPolygon25D.
Referenced by QgsVectorLayer(), readSymbology(), QgsUniqueValueRenderer::readXML(), QgsSingleSymbolRenderer::readXML(), QgsGraduatedSymbolRenderer::readXML(), QgsContinuousColorRenderer::readXML(), and snapToGeometry().
| QGis::WkbType QgsVectorLayer::wkbType | ( | ) | const |
Returns the WKBType or WKBUnknown in case of error.
Definition at line 1001 of file qgsvectorlayer.cpp.
References mWkbType.
Referenced by addTopologicalPoints(), drawFeature(), drawLineString(), and drawPolygon().
| QString QgsVectorLayer::providerType | ( | ) | const |
Return the provider type for this layer.
Definition at line 200 of file qgsvectorlayer.cpp.
References mProviderKey.
Referenced by writeXml().
| bool QgsVectorLayer::readXml | ( | QDomNode & | layer_node | ) | [virtual] |
reads vector layer specific state from project file Dom node.
Reimplemented from QgsMapLayer.
Definition at line 2051 of file qgsvectorlayer.cpp.
References mDataProvider, QgsMapLayer::mDataSource, mProviderKey, QgsMapLayer::mValid, QgsDebugMsg, readSymbology(), setDataProvider(), and QgsVectorDataProvider::setEncoding().
| bool QgsVectorLayer::writeXml | ( | QDomNode & | layer_node, | |
| QDomDocument & | doc | |||
| ) | [virtual] |
write vector layer specific state to project file Dom node.
Reimplemented from QgsMapLayer.
Definition at line 2193 of file qgsvectorlayer.cpp.
References providerType(), QGis::qgisVectorGeometryType, QgsDebugMsg, QgsMapLayer::type(), and writeSymbology().
| bool QgsVectorLayer::readSymbology | ( | const QDomNode & | node, | |
| QString & | errorMessage | |||
| ) | [virtual] |
Read the symbology for the current layer from the Dom node supplied.
| QDomNode | node that will contain the symbology definition for this layer. | |
| errorMessage | reference to string that will be updated with any error messages |
Implements QgsMapLayer.
Definition at line 2229 of file qgsvectorlayer.cpp.
References EditRange, editType(), enableLabels(), geometryType(), hasLabelsEnabled(), label(), mActions, mEditTypes, mLabel, mRanges, mRenderer, mValueMaps, QgsMapLayer::name(), QgsDebugMsg, QgsLabel::readXML(), QgsRenderer::readXML(), QgsAttributeAction::readXML(), renderer(), setDisplayField(), QgsLabel::setMaxScale(), QgsLabel::setMinScale(), QgsLabel::setScaleBasedVisibility(), SliderRange, and ValueMap.
Referenced by readXml().
| bool QgsVectorLayer::writeSymbology | ( | QDomNode & | , | |
| QDomDocument & | doc, | |||
| QString & | errorMessage | |||
| ) | const [virtual] |
Write the symbology for the layer into the docment provided.
| QDomNode | the node that will have the style element added to it. | |
| QDomDocument | the document that will have the QDomNode added. | |
| errorMessage | reference to string that will be updated with any error messages |
Implements QgsMapLayer.
Definition at line 2357 of file qgsvectorlayer.cpp.
References QgsRenderer::classificationAttributes(), displayField(), EditRange, QgsVectorDataProvider::fields(), hasLabelsEnabled(), label(), QgsLabel::labelField(), mActions, mDataProvider, mEditTypes, mRanges, mRenderer, mValueMaps, QgsMapLayer::name(), QgsDebugMsg, renderer(), SliderRange, QgsLabel::Text, ValueMap, QgsLabel::writeXML(), QgsRenderer::writeXML(), and QgsAttributeAction::writeXML().
Referenced by writeXml().
| long QgsVectorLayer::featureCount | ( | ) | const [virtual] |
Number of features in the layer.
This is necessary if features are added/deleted or the layer has been subsetted. If the data provider chooses not to support this feature, the total number of features can be returned.
Definition at line 1062 of file qgsvectorlayer.cpp.
References QgsVectorDataProvider::featureCount(), mDataProvider, and QgsLogger::warning().
Referenced by draw(), and drawLabels().
| long QgsVectorLayer::updateFeatureCount | ( | ) | const [virtual] |
Update the feature count.
Definition at line 1073 of file qgsvectorlayer.cpp.
References mDataProvider, QgsVectorDataProvider::updateFeatureCount(), and QgsLogger::warning().
Referenced by draw().
| void QgsVectorLayer::setSubsetString | ( | QString | subset | ) | [virtual] |
Set the string (typically sql) used to define a subset of the layer.
| subset& |