mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-25 00:58:06 -05:00
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!
78 lines
2.8 KiB
Plaintext
78 lines
2.8 KiB
Plaintext
/** \ingroup MapComposer
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* A model that provides group, layer and classification items.
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*/
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class QgsLegendModel : QStandardItemModel
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{
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%TypeHeaderCode
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#include <qgslegendmodel.h>
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%End
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public:
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enum ItemType
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{
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GroupItem,
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LayerItem,
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ClassificationItem
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};
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QgsLegendModel();
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~QgsLegendModel();
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/** Set layers and groups from a layer tree
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* @note added in 2.6
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*/
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void setLayerSetAndGroups( QgsLayerTreeGroup* rootGroup );
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/** Sets layer set and groups
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* @deprecated in 2.6
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*/
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void setLayerSetAndGroups( const QStringList& layerIds, const QList< QPair< QString, QList<QString> > >& groupInfo ) /Deprecated/;
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void setLayerSet( const QStringList& layerIds, double scaleDenominator = -1, const QString& rule = "" );
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/** Adds a group
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@param text name of group (defaults to translation of "Group")
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@param position insertion position (toplevel position (or -1 if it should be placed at the end of the legend).
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@param parentItem parent item
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@returns a pointer to the added group
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*/
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QStandardItem *addGroup( QString text = QString::null, int position = -1, QStandardItem* parentItem = 0 );
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/** Tries to automatically update a model entry (e.g. a whole layer or only a single item)*/
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void updateItem( QStandardItem* item );
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/** Updates the whole symbology of a layer*/
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void updateLayer( QStandardItem* layerItem );
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/** Tries to update a single classification item*/
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void updateVectorV2ClassificationItem( QStandardItem* classificationItem, QgsSymbolV2* symbol, const QString& itemText );
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void updateRasterClassificationItem( QStandardItem* classificationItem );
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/** Update single item text using item userText and other properties like showFeatureCount */
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void updateItemText( QStandardItem* item );
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bool writeXML( QDomElement& composerLegendElem, QDomDocument& doc ) const;
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bool readXML( const QDomElement& legendModelElem, const QDomDocument& doc );
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Qt::DropActions supportedDropActions() const;
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Qt::ItemFlags flags( const QModelIndex &index ) const;
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/** Implemented to support drag operations*/
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virtual bool removeRows( int row, int count, const QModelIndex & parent = QModelIndex() );
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/** For the drag operation*/
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QMimeData* mimeData( const QModelIndexList &indexes ) const;
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QStringList mimeTypes() const;
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/** Implements the drop operation*/
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bool dropMimeData( const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent );
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void setAutoUpdate( bool autoUpdate );
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bool autoUpdate();
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public slots:
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void removeLayer( const QString& layerId );
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void addLayer( QgsMapLayer* theMapLayer, double scaleDenominator = -1, const QString& rule = "", QStandardItem* parentItem = 0 );
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signals:
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void layersChanged();
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};
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