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QGIS API Documentation
3.4.15-Madeira (e83d02e274)
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QGIS API Documentation
3.4.15-Madeira (e83d02e274)
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Base class for plugin layers. More...
#include <qgspluginlayer.h>
Public Member Functions | |
| QgsPluginLayer (const QString &layerType, const QString &layerName=QString()) | |
| ~QgsPluginLayer () override | |
| QgsPluginLayer * | clone () const override=0 |
| Returns a new instance equivalent to this one. More... | |
| QgsDataProvider * | dataProvider () override |
| Returns the layer's data provider. More... | |
| const QgsDataProvider * | dataProvider () const override |
| Returns the layer's data provider in a const-correct manner. More... | |
| QString | pluginLayerType () |
| Returns plugin layer type (the same as used in QgsPluginLayerRegistry) More... | |
| void | setExtent (const QgsRectangle &extent) override |
| Sets extent of the layer. More... | |
| void | setSource (const QString &source) |
| Set source string. More... | |
 Public Member Functions inherited from QgsMapLayer | |
| QgsMapLayer (QgsMapLayer::LayerType type=VectorLayer, const QString &name=QString(), const QString &source=QString()) | |
| Constructor for QgsMapLayer. More... | |
| QgsMapLayer (QgsMapLayer const &)=delete | |
| QgsMapLayer cannot be copied. More... | |
| ~QgsMapLayer () override | |
| QString | abstract () const |
| Returns the abstract of the layer used by QGIS Server in GetCapabilities request. More... | |
| QString | attribution () const |
| Returns the attribution of the layer used by QGIS Server in GetCapabilities request. More... | |
| QString | attributionUrl () const |
| Returns the attribution URL of the layer used by QGIS Server in GetCapabilities request. More... | |
| int | autoRefreshInterval () const |
| Returns the auto refresh interval (in milliseconds). More... | |
| QPainter::CompositionMode | blendMode () const |
| Returns the current blending mode for a layer. More... | |
| virtual QgsMapLayerRenderer * | createMapRenderer (QgsRenderContext &rendererContext)=0 |
| Returns new instance of QgsMapLayerRenderer that will be used for rendering of given context. More... | |
| QgsCoordinateReferenceSystem | crs () const |
| Returns the layer's spatial reference system. More... | |
| QVariant | customProperty (const QString &value, const QVariant &defaultValue=QVariant()) const |
| Read a custom property from layer. More... | |
| QStringList | customPropertyKeys () const |
| Returns list of all keys within custom properties. More... | |
| QString | dataUrl () const |
| Returns the DataUrl of the layer used by QGIS Server in GetCapabilities request. More... | |
| QString | dataUrlFormat () const |
| Returns the DataUrl format of the layer used by QGIS Server in GetCapabilities request. More... | |
| virtual QSet< QgsMapLayerDependency > | dependencies () const |
| Gets the list of dependencies. More... | |
| virtual QgsError | error () const |
| Gets current status error. More... | |
| void | exportNamedMetadata (QDomDocument &doc, QString &errorMsg) const |
| Export the current metadata of this layer as named metadata in a QDomDocument. More... | |
| virtual void | exportNamedStyle (QDomDocument &doc, QString &errorMsg, const QgsReadWriteContext &context=QgsReadWriteContext(), QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) const |
| Export the properties of this layer as named style in a QDomDocument. More... | |
| virtual void | exportSldStyle (QDomDocument &doc, QString &errorMsg) const |
| Export the properties of this layer as SLD style in a QDomDocument. More... | |
| virtual QgsRectangle | extent () const |
| Returns the extent of the layer. More... | |
| QgsMapLayer::LayerFlags | flags () const |
| Returns the flags for this layer. More... | |
| bool | hasAutoRefreshEnabled () const |
| Returns true if auto refresh is enabled for the layer. More... | |
| bool | hasScaleBasedVisibility () const |
| Returns whether scale based visibility is enabled for the layer. More... | |
| virtual QString | htmlMetadata () const |
| Obtain a formatted HTML string containing assorted metadata for this layer. More... | |
| QString | id () const |
| Returns the layer's unique ID, which is used to access this layer from QgsProject. More... | |
| bool | importNamedMetadata (QDomDocument &document, QString &errorMessage) |
| Import the metadata of this layer from a QDomDocument. More... | |
| virtual bool | importNamedStyle (QDomDocument &doc, QString &errorMsg, QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) |
| Import the properties of this layer from a QDomDocument. More... | |
| virtual bool | isEditable () const |
| Returns true if the layer can be edited. More... | |
| bool | isInScaleRange (double scale) const |
| Tests whether the layer should be visible at the specified scale. More... | |
| bool | isRefreshOnNotifyEnabled () const |
| Returns true if the refresh on provider nofification is enabled. More... | |
| virtual bool | isSpatial () const |
| Returns true if the layer is considered a spatial layer, ie it has some form of geometry associated with it. More... | |
| bool | isValid () const |
| Returns the status of the layer. More... | |
| QString | keywordList () const |
| Returns the keyword list of the layer used by QGIS Server in GetCapabilities request. More... | |
| QgsMapLayerLegend * | legend () const |
| Can be null. More... | |
| QString | legendUrl () const |
| Returns the URL for the layer's legend. More... | |
| QString | legendUrlFormat () const |
| Returns the format for a URL based layer legend. More... | |
| QString | loadDefaultMetadata (bool &resultFlag) |
| Retrieve the default metadata for this layer if one exists (either as a .qmd file on disk or as a record in the users metadata table in their personal qgis.db) More... | |
| virtual QString | loadDefaultStyle (bool &resultFlag) |
| Retrieve the default style for this layer if one exists (either as a .qml file on disk or as a record in the users style table in their personal qgis.db) More... | |
| virtual QString | loadNamedMetadata (const QString &uri, bool &resultFlag) |
| Retrieve a named metadata for this layer if one exists (either as a .qmd file on disk or as a record in the users style table in their personal qgis.db) More... | |
| bool | loadNamedMetadataFromDatabase (const QString &db, const QString &uri, QString &qmd) |
| Retrieve a named metadata for this layer from a sqlite database. More... | |
| virtual QString | loadNamedStyle (const QString &uri, bool &resultFlag, QgsMapLayer::StyleCategories categories=QgsMapLayer::AllStyleCategories) |
| Retrieve a named style for this layer if one exists (either as a .qml file on disk or as a record in the users style table in their personal qgis.db) More... | |
| virtual bool | loadNamedStyleFromDatabase (const QString &db, const QString &uri, QString &qml) |
| Retrieve a named style for this layer from a sqlite database. More... | |
| virtual QString | loadSldStyle (const QString &uri, bool &resultFlag) |
| Attempts to style the layer using the formatting from an SLD type file. More... | |
| double | maximumScale () const |
| Returns the maximum map scale (i.e. More... | |
| virtual const QgsLayerMetadata & | metadata () const |
| Returns a reference to the layer's metadata store. More... | |
| virtual QString | metadataUri () const |
| Retrieve the metadata URI for this layer (either as a .qmd file on disk or as a record in the users style table in their personal qgis.db) More... | |
| QString | metadataUrl () const |
| Returns the metadata URL of the layer used by QGIS Server in GetCapabilities request. More... | |
| QString | metadataUrlFormat () const |
| Returns the metadata format of the layer used by QGIS Server in GetCapabilities request. More... | |
| QString | metadataUrlType () const |
| Returns the metadata type of the layer used by QGIS Server in GetCapabilities request. More... | |
| double | minimumScale () const |
| Returns the minimum map scale (i.e. More... | |
| QString | name () const |
| Returns the display name of the layer. More... | |
| QgsMapLayer & | operator= (QgsMapLayer const &)=delete |
| QgsMapLayer cannot be copied. More... | |
| QString | publicSource () const |
| Gets a version of the internal layer definition that has sensitive bits removed (for example, the password). More... | |
| bool | readLayerXml (const QDomElement &layerElement, QgsReadWriteContext &context) |
| Sets state from DOM document. More... | |
| bool | readOnly () const |
| Returns if this layer is read only. More... | |
| virtual bool | readSld (const QDomNode &node, QString &errorMessage) |
| virtual bool | readStyle (const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories) |
| Read the style for the current layer from the DOM node supplied. More... | |
| virtual bool | readSymbology (const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories)=0 |
| Read the symbology for the current layer from the DOM node supplied. More... | |
| QString | refreshOnNotifyMessage () const |
| Returns the message that should be notified by the provider to triggerRepaint. More... | |
| virtual void | reload () |
| Synchronises with changes in the datasource. More... | |
| void | removeCustomProperty (const QString &key) |
| Remove a custom property from layer. More... | |
| QgsAbstract3DRenderer * | renderer3D () const |
| Returns 3D renderer associated with the layer. More... | |
| virtual void | resolveReferences (QgsProject *project) |
| Resolve references to other layers (kept as layer IDs after reading XML) into layer objects. More... | |
| virtual QString | saveDefaultMetadata (bool &resultFlag) |
| Save the current metadata of this layer as the default metadata (either as a .qmd file on disk or as a record in the users style table in their personal qgis.db) More... | |
| virtual QString | saveDefaultStyle (bool &resultFlag) |
| Save the properties of this layer as the default style (either as a .qml file on disk or as a record in the users style table in their personal qgis.db) More... | |
| QString | saveNamedMetadata (const QString &uri, bool &resultFlag) |
| Save the current metadata of this layer as a named metadata (either as a .qmd file on disk or as a record in the users style table in their personal qgis.db) More... | |
| virtual QString | saveNamedStyle (const QString &uri, bool &resultFlag, StyleCategories categories=AllStyleCategories) |
| Save the properties of this layer as a named style (either as a .qml file on disk or as a record in the users style table in their personal qgis.db) More... | |
| virtual QString | saveSldStyle (const QString &uri, bool &resultFlag) const |
| Saves the properties of this layer to an SLD format file. More... | |
| void | setAbstract (const QString &abstract) |
| Sets the abstract of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setAttribution (const QString &attrib) |
| Sets the attribution of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setAttributionUrl (const QString &attribUrl) |
| Sets the attribution URL of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setAutoRefreshEnabled (bool enabled) |
| Sets whether auto refresh is enabled for the layer. More... | |
| void | setAutoRefreshInterval (int interval) |
| Sets the auto refresh interval (in milliseconds) for the layer. More... | |
| void | setBlendMode (QPainter::CompositionMode blendMode) |
| Set the blending mode used for rendering a layer. More... | |
| void | setCrs (const QgsCoordinateReferenceSystem &srs, bool emitSignal=true) |
| Sets layer's spatial reference system. More... | |
| void | setCustomProperties (const QgsObjectCustomProperties &properties) |
| Set custom properties for layer. More... | |
| void | setCustomProperty (const QString &key, const QVariant &value) |
| Set a custom property for layer. More... | |
| void | setDataUrl (const QString &dataUrl) |
| Sets the DataUrl of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setDataUrlFormat (const QString &dataUrlFormat) |
| Sets the DataUrl format of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setFlags (QgsMapLayer::LayerFlags flags) |
| Returns the flags for this layer. More... | |
| void | setKeywordList (const QString &keywords) |
| Sets the keyword list of the layer used by QGIS Server in GetCapabilities request. More... | |
| virtual void | setLayerOrder (const QStringList &layers) |
| Reorders the previously selected sublayers of this layer from bottom to top. More... | |
| void | setLegend (QgsMapLayerLegend *legend) |
| Assign a legend controller to the map layer. More... | |
| void | setLegendUrl (const QString &legendUrl) |
| Sets the URL for the layer's legend. More... | |
| void | setLegendUrlFormat (const QString &legendUrlFormat) |
| Sets the format for a URL based layer legend. More... | |
| virtual void | setMetadata (const QgsLayerMetadata &metadata) |
| Sets the layer's metadata store. More... | |
| void | setMetadataUrl (const QString &metaUrl) |
| Sets the metadata URL of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setMetadataUrlFormat (const QString &metaUrlFormat) |
| Sets the metadata format of the layer used by QGIS Server in GetCapabilities request. More... | |
| void | setMetadataUrlType (const QString &metaUrlType) |
| Set the metadata type of the layer used by QGIS Server in GetCapabilities request MetadataUrlType indicates the standard to which the metadata complies. More... | |
| void | setName (const QString &name) |
| Set the display name of the layer. More... | |
| void | setRenderer3D (QgsAbstract3DRenderer *renderer) |
| Sets 3D renderer for the layer. More... | |
| void | setShortName (const QString &shortName) |
| Sets the short name of the layer used by QGIS Server to identify the layer. More... | |
| virtual void | setSubLayerVisibility (const QString &name, bool visible) |
| Set the visibility of the given sublayer name. More... | |
| void | setTitle (const QString &title) |
| Sets the title of the layer used by QGIS Server in GetCapabilities request. More... | |
| QString | shortName () const |
| Returns the short name of the layer used by QGIS Server to identify the layer. More... | |
| QString | source () const |
| Returns the source for the layer. More... | |
| QgsMapLayerStyleManager * | styleManager () const |
| Gets access to the layer's style manager. More... | |
| virtual QString | styleURI () const |
| Retrieve the style URI for this layer (either as a .qml file on disk or as a record in the users style table in their personal qgis.db) More... | |
| virtual QStringList | subLayers () const |
| Returns the sublayers of this layer. More... | |
| virtual QDateTime | timestamp () const |
| Time stamp of data source in the moment when data/metadata were loaded by provider. More... | |
| QString | title () const |
| Returns the title of the layer used by QGIS Server in GetCapabilities request. More... | |
| QgsMapLayer::LayerType | type () const |
| Returns the type of the layer. More... | |
| QUndoStack * | undoStack () |
| Returns pointer to layer's undo stack. More... | |
| QUndoStack * | undoStackStyles () |
| Returns pointer to layer's style undo stack. More... | |
| bool | writeLayerXml (QDomElement &layerElement, QDomDocument &document, const QgsReadWriteContext &context) const |
| Stores state in DOM node. More... | |
| virtual bool | writeStyle (QDomNode &node, QDomDocument &doc, QString &errorMessage, const QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories) const |
| Write just the symbology information for the layer into the document. More... | |
| virtual bool | writeSymbology (QDomNode &node, QDomDocument &doc, QString &errorMessage, const QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories) const =0 |
| Write the style for the layer into the docment provided. More... | |
Protected Attributes | |
| QgsDataProvider * | mDataProvider |
| QString | mPluginLayerType |
| Protected Attributes inherited from QgsMapLayer | |
| QString | mAbstract |
| Description of the layer. More... | |
| QString | mAttribution |
| Attribution of the layer. More... | |
| QString | mAttributionUrl |
| QString | mDataSource |
| Data source description string, varies by layer type. More... | |
| QString | mDataUrl |
| DataUrl of the layer. More... | |
| QString | mDataUrlFormat |
| QSet< QgsMapLayerDependency > | mDependencies |
| List of layers that may modify this layer on modification. More... | |
| QgsError | mError |
| Error. More... | |
| QgsRectangle | mExtent |
| Extent of the layer. More... | |
| bool | mIsRefreshOnNofifyEnabled = false |
| QString | mKeywordList |
| QString | mLayerName |
| Name of the layer - used for display. More... | |
| QString | mLegendUrl |
| WMS legend. More... | |
| QString | mLegendUrlFormat |
| QString | mMetadataUrl |
| MetadataUrl of the layer. More... | |
| QString | mMetadataUrlFormat |
| QString | mMetadataUrlType |
| QString | mRefreshOnNofifyMessage |
| QString | mShortName |
| QString | mTitle |
| bool | mValid = false |
| Indicates if the layer is valid and can be drawn. More... | |
Additional Inherited Members | |
| Public Types inherited from QgsMapLayer | |
| enum | LayerFlag { Identifiable = 1 << 0, Removable = 1 << 1, Searchable = 1 << 2 } |
| Flags for the map layer. More... | |
| enum | LayerType { VectorLayer, RasterLayer, PluginLayer, MeshLayer } |
| Types of layers that can be added to a map. More... | |
| enum | PropertyType { Style = 0, Metadata } |
| Maplayer has a style and a metadata property. More... | |
| enum | StyleCategory { LayerConfiguration = 1 << 0, Symbology = 1 << 1, Symbology3D = 1 << 2, Labeling = 1 << 3, Fields = 1 << 4, Forms = 1 << 5, Actions = 1 << 6, MapTips = 1 << 7, Diagrams = 1 << 8, AttributeTable = 1 << 9, Rendering = 1 << 10, CustomProperties = 1 << 11, GeometryOptions = 1 << 12, AllStyleCategories } |
| Categories of style to distinguish appropriate sections for import/export. More... | |
| Public Slots inherited from QgsMapLayer | |
| void | emitStyleChanged () |
| Triggers an emission of the styleChanged() signal. More... | |
| virtual bool | setDependencies (const QSet< QgsMapLayerDependency > &layers) |
| Sets the list of dependencies. More... | |
| void | setMaximumScale (double scale) |
| Sets the maximum map scale (i.e. More... | |
| void | setMinimumScale (double scale) |
| Sets the minimum map scale (i.e. More... | |
| void | setRefreshOnNofifyMessage (const QString &message) |
| Set the notification message that triggers repaine If refresh on notification is enabled, the notification will triggerRepaint only if the notification message is equal to. More... | |
| void | setRefreshOnNotifyEnabled (bool enabled) |
| Set whether provider notification is connected to triggerRepaint. More... | |
| void | setScaleBasedVisibility (bool enabled) |
| Sets whether scale based visibility is enabled for the layer. More... | |
| void | triggerRepaint (bool deferredUpdate=false) |
| Will advise the map canvas (and any other interested party) that this layer requires to be repainted. More... | |
| Signals inherited from QgsMapLayer | |
| void | autoRefreshIntervalChanged (int interval) |
| Emitted when the auto refresh interval changes. More... | |
| void | blendModeChanged (QPainter::CompositionMode blendMode) |
| Signal emitted when the blend mode is changed, through QgsMapLayer::setBlendMode() More... | |
| void | configChanged () |
| Emitted whenever the configuration is changed. More... | |
| void | crsChanged () |
| Emit a signal that layer's CRS has been reset. More... | |
| void | dataChanged () |
| Data of layer changed. More... | |
| void | dependenciesChanged () |
| Emitted when dependencies are changed. More... | |
| void | flagsChanged () |
| Emitted when layer's flags have been modified. More... | |
| void | legendChanged () |
| Signal emitted when legend of the layer has changed. More... | |
| void | metadataChanged () |
| Emitted when the layer's metadata is changed. More... | |
| void | nameChanged () |
| Emitted when the name has been changed. More... | |
| void | recalculateExtents () const |
| This is used to send a request that any mapcanvas using this layer update its extents. More... | |
| void | renderer3DChanged () |
| Signal emitted when 3D renderer associated with the layer has changed. More... | |
| void | rendererChanged () |
| Signal emitted when renderer is changed. More... | |
| void | repaintRequested (bool deferredUpdate=false) |
| By emitting this signal the layer tells that either appearance or content have been changed and any view showing the rendered layer should refresh itself. More... | |
| void | statusChanged (const QString &status) |
| Emit a signal with status (e.g. to be caught by QgisApp and display a msg on status bar) More... | |
| void | styleChanged () |
| Signal emitted whenever a change affects the layer's style. More... | |
| void | willBeDeleted () |
| Emitted in the destructor when the layer is about to be deleted, but it is still in a perfectly valid state: the last chance for other pieces of code for some cleanup if they use the layer. More... | |
| Static Public Member Functions inherited from QgsMapLayer | |
| static QString | extensionPropertyType (PropertyType type) |
| Returns the extension of a Property. More... | |
| static QString | formatLayerName (const QString &name) |
| A convenience function to capitalize and format a layer name. More... | |
| Protected Member Functions inherited from QgsMapLayer | |
| void | appendError (const QgsErrorMessage &error) |
| Add error message. More... | |
| void | clone (QgsMapLayer *layer) const |
| Copies attributes like name, short name, ... More... | |
| virtual QString | decodedSource (const QString &source, const QString &dataProvider, const QgsReadWriteContext &context) const |
| Called by readLayerXML(), used by derived classes to decode provider's specific data source from project files. More... | |
| virtual QString | encodedSource (const QString &source, const QgsReadWriteContext &context) const |
| Called by writeLayerXML(), used by derived classes to encode provider's specific data source to project files. More... | |
| bool | hasDependencyCycle (const QSet< QgsMapLayerDependency > &layers) const |
| Checks whether a new set of dependencies will introduce a cycle. More... | |
| void | readCommonStyle (const QDomElement &layerElement, const QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories) |
| Read style data common to all layer types. More... | |
| void | readCustomProperties (const QDomNode &layerNode, const QString &keyStartsWith=QString()) |
| Read custom properties from project file. More... | |
| void | readStyleManager (const QDomNode &layerNode) |
| Read style manager's configuration (if any). To be called by subclasses. More... | |
| virtual bool | readXml (const QDomNode &layer_node, QgsReadWriteContext &context) |
| Called by readLayerXML(), used by children to read state specific to them from project files. More... | |
| void | setError (const QgsError &error) |
| Sets error message. More... | |
| void | setValid (bool valid) |
| Sets whether layer is valid or not - should be used in constructor. More... | |
| void | writeCommonStyle (QDomElement &layerElement, QDomDocument &document, const QgsReadWriteContext &context, StyleCategories categories=AllStyleCategories) const |
| Write style data common to all layer types. More... | |
| void | writeCustomProperties (QDomNode &layerNode, QDomDocument &doc) const |
| Write custom properties to project file. More... | |
| void | writeStyleManager (QDomNode &layerNode, QDomDocument &doc) const |
| Write style manager's configuration (if exists). To be called by subclasses. More... | |
| virtual bool | writeXml (QDomNode &layer_node, QDomDocument &document, const QgsReadWriteContext &context) const |
| Called by writeLayerXML(), used by children to write state specific to them to project files. More... | |
| Properties inherited from QgsMapLayer | |
| int | autoRefreshInterval |
| QgsCoordinateReferenceSystem | crs |
| QgsLayerMetadata | metadata |
| QString | name |
Base class for plugin layers.
These can be implemented by plugins and registered in QgsPluginLayerRegistry.
In order to be readable from project files, they should set these attributes in layer DOM node: "type" = "plugin" "name" = "your_layer_type"
Definition at line 31 of file qgspluginlayer.h.
| QgsPluginLayer::QgsPluginLayer | ( | const QString & | layerType, |
| const QString & | layerName = QString() |
||
| ) |
Definition at line 21 of file qgspluginlayer.cpp.
|
override |
Definition at line 28 of file qgspluginlayer.cpp.
|
overridepure virtual |
Returns a new instance equivalent to this one.
Implements QgsMapLayer.
|
overridevirtual |
Returns the layer's data provider.
Reimplemented from QgsMapLayer.
Definition at line 52 of file qgspluginlayer.cpp.
|
overridevirtual |
Returns the layer's data provider in a const-correct manner.
Reimplemented from QgsMapLayer.
Definition at line 57 of file qgspluginlayer.cpp.
| QString QgsPluginLayer::pluginLayerType | ( | ) |
Returns plugin layer type (the same as used in QgsPluginLayerRegistry)
Definition at line 36 of file qgspluginlayer.cpp.
|
overridevirtual |
Sets extent of the layer.
Reimplemented from QgsMapLayer.
Definition at line 41 of file qgspluginlayer.cpp.
| void QgsPluginLayer::setSource | ( | const QString & | source | ) |
Set source string.
This is used for example in layer tree to show tooltip.
Definition at line 47 of file qgspluginlayer.cpp.
|
protected |
Definition at line 63 of file qgspluginlayer.h.
|
protected |
Definition at line 62 of file qgspluginlayer.h.
1.8.11
