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8ffd91ea90
This is necessary in order to be able to correctly translate between absolute and relative paths deeper in the code - e.g. paths to SVG files used in marker or fill symbols. Until now, relative paths were translated to absolute paths on the fly. This is now changed - paths to files should be always absolute within QGIS objects - and paths only get turned into relative when saving projects. When loading a project, relative paths are translated to absolute paths immediately. This should lower the overall confusion about relative/absolute paths within QGIS, and also allow having different base directories for relative paths (e.g. QML or QPT files may use relative paths to their directory - rather than to the project directory)
86 lines
3.1 KiB
Plaintext
86 lines
3.1 KiB
Plaintext
class QgsSymbolLayerWidget /External/;
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class QgsSymbolLayerAbstractMetadata
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{
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%TypeHeaderCode
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#include <qgssymbollayerregistry.h>
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%End
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public:
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QgsSymbolLayerAbstractMetadata( const QString &name, const QString &visibleName, QgsSymbol::SymbolType type );
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virtual ~QgsSymbolLayerAbstractMetadata();
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QString name() const;
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QString visibleName() const;
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QgsSymbol::SymbolType type() const;
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/** Create a symbol layer of this type given the map of properties. */
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virtual QgsSymbolLayer *createSymbolLayer( const QgsStringMap &map ) = 0 /Factory/;
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/** Create widget for symbol layer of this type. Can return NULL if there's no GUI */
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virtual QgsSymbolLayerWidget *createSymbolLayerWidget( const QgsVectorLayer * ) /Factory/;
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/** Create a symbol layer of this type given the map of properties. */
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virtual QgsSymbolLayer* createSymbolLayerFromSld( QDomElement & ) /Factory/;
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virtual void resolvePaths( QgsStringMap& properties, const QgsPathResolver& pathResolver, bool saving );
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};
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/**
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Convenience metadata class that uses static functions to create symbol layer and its widget.
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*/
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class QgsSymbolLayerMetadata : QgsSymbolLayerAbstractMetadata
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{
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%TypeHeaderCode
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#include <qgssymbollayerregistry.h>
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%End
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public:
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virtual QgsSymbolLayer* createSymbolLayer( const QgsStringMap& map ) /Factory/;
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virtual QgsSymbolLayerWidget* createSymbolLayerWidget( const QgsVectorLayer* vl ) /Factory/;
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virtual QgsSymbolLayer* createSymbolLayerFromSld( QDomElement& elem ) /Factory/;
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virtual void resolvePaths( QgsStringMap& properties, const QgsPathResolver& pathResolver, bool saving );
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private:
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QgsSymbolLayerMetadata(); // pretend this is private
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};
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/**
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Registry of available symbol layer classes.
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Implemented as a singleton.
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*/
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class QgsSymbolLayerRegistry
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{
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%TypeHeaderCode
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#include <qgssymbollayerregistry.h>
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%End
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public:
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QgsSymbolLayerRegistry();
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~QgsSymbolLayerRegistry();
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//! return metadata for specified symbol layer. Returns NULL if not found
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QgsSymbolLayerAbstractMetadata *symbolLayerMetadata( const QString &name ) const;
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//! register a new symbol layer type. Takes ownership of the metadata instance.
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bool addSymbolLayerType( QgsSymbolLayerAbstractMetadata *metadata /Transfer/ );
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//! create a new instance of symbol layer given symbol layer name and properties
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QgsSymbolLayer *createSymbolLayer( const QString &name, const QgsStringMap &properties = QgsStringMap() ) const /Factory/;
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//! create a new instance of symbol layer given symbol layer name and SLD
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QgsSymbolLayer *createSymbolLayerFromSld( const QString &name, QDomElement &element ) const;
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void resolvePaths( const QString &name, QgsStringMap& properties, const QgsPathResolver& pathResolver, bool saving ) const;
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//! return a list of available symbol layers for a specified symbol type
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QStringList symbolLayersForType( QgsSymbol::SymbolType type );
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//! create a new instance of symbol layer for specified symbol type with default settings
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static QgsSymbolLayer *defaultSymbolLayer( QgsSymbol::SymbolType type ) /Factory/;
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private:
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QgsSymbolLayerRegistry( const QgsSymbolLayerRegistry &rh );
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};
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