QGIS API Documentation 3.41.0-Master (3440c17df1d)
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The QgsMapLayerLegend class is abstract interface for implementations of legends for one map layer. More...
#include <qgsmaplayerlegend.h>
Signals | |
void | itemsChanged () |
Emitted when existing items/nodes got invalid and should be replaced by new ones. | |
Public Member Functions | |
QgsMapLayerLegend (QObject *parent=nullptr) | |
Constructor for QgsMapLayerLegend. | |
virtual QList< QgsLayerTreeModelLegendNode * > | createLayerTreeModelLegendNodes (QgsLayerTreeLayer *nodeLayer)=0 |
Returns list of legend nodes to be used for a particular layer tree layer node. | |
virtual void | readXml (const QDomElement &elem, const QgsReadWriteContext &context) |
Reads configuration from a DOM element previously written by writeXml() | |
virtual QDomElement | writeXml (QDomDocument &doc, const QgsReadWriteContext &context) const |
Writes configuration to a DOM element, to be used later with readXml() | |
Static Public Member Functions | |
static QgsMapLayerLegend * | defaultMeshLegend (QgsMeshLayer *ml) |
Create new legend implementation for mesh layer. | |
static QgsMapLayerLegend * | defaultPointCloudLegend (QgsPointCloudLayer *layer) |
Create new legend implementation for a point cloud layer. | |
static QgsMapLayerLegend * | defaultRasterLegend (QgsRasterLayer *rl) |
Create new legend implementation for raster layer. | |
static QgsMapLayerLegend * | defaultVectorLegend (QgsVectorLayer *vl) |
Create new legend implementation for vector layer. | |
The QgsMapLayerLegend class is abstract interface for implementations of legends for one map layer.
Definition at line 46 of file qgsmaplayerlegend.h.
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explicit |
Constructor for QgsMapLayerLegend.
Definition at line 37 of file qgsmaplayerlegend.cpp.
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pure virtual |
Returns list of legend nodes to be used for a particular layer tree layer node.
Ownership is transferred to the caller.
Implemented in QgsDefaultVectorLayerLegend, QgsDefaultRasterLayerLegend, QgsDefaultMeshLayerLegend, and QgsDefaultPointCloudLayerLegend.
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Create new legend implementation for mesh layer.
Definition at line 65 of file qgsmaplayerlegend.cpp.
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static |
Create new legend implementation for a point cloud layer.
Definition at line 70 of file qgsmaplayerlegend.cpp.
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static |
Create new legend implementation for raster layer.
Definition at line 60 of file qgsmaplayerlegend.cpp.
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Create new legend implementation for vector layer.
Definition at line 55 of file qgsmaplayerlegend.cpp.
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signal |
Emitted when existing items/nodes got invalid and should be replaced by new ones.
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virtual |
Reads configuration from a DOM element previously written by writeXml()
Reimplemented in QgsDefaultVectorLayerLegend.
Definition at line 42 of file qgsmaplayerlegend.cpp.
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virtual |
Writes configuration to a DOM element, to be used later with readXml()
Reimplemented in QgsDefaultVectorLayerLegend.
Definition at line 48 of file qgsmaplayerlegend.cpp.