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https://github.com/qgis/QGIS.git
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c49b5b777f
Rationale: - there was a lot of large objects passed by value, so potentially there's a speed bump from this - even for implicitly shared classes like QString/QList there's still a (small) cost for copying the objects when there's no reason to - it's the right thing to do!
22 lines
1.1 KiB
Plaintext
22 lines
1.1 KiB
Plaintext
/**
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* @brief The QgsLayerDefinition class holds generic methods for loading/exporting QLR files.
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*
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* QLR files are an export of the layer xml including the style and datasource location. There is no link
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* to the QLR file once loaded. Consider the QLR file a mini project file for layers and styles. QLR
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* files also store the layer tree info for the exported layers, including group information.
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*/
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class QgsLayerDefinition
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{
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%TypeHeaderCode
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#include <qgslayerdefinition.h>
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%End
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public:
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/** Loads the QLR at path into QGIS. New layers are added to rootGroup and the map layer registry*/
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static bool loadLayerDefinition( const QString & path, QgsLayerTreeGroup* rootGroup, QString &errorMessage /Out/ );
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/** Loads the QLR from the XML document. New layers are added to rootGroup and the map layer registry */
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static bool loadLayerDefinition( QDomDocument doc, QgsLayerTreeGroup* rootGroup, QString &errorMessage /Out/ );
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/** Export the selected layer tree nodes to a QLR file */
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static bool exportLayerDefinition( QString path, const QList<QgsLayerTreeNode*>& selectedTreeNodes, QString &errorMessage /Out/ );
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};
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