GlsMapSymbologyDataSource Class Reference

#include <gls_map_symbology_data_source.h>

Inheritance diagram for GlsMapSymbologyDataSource:

Public Member Functions
	GlsMapSymbologyDataSource ()
	Constructor.
virtual	~GlsMapSymbologyDataSource ()
	Destructor.
virtual void	GetSymbolsInRegion (disti::GlsMapSymbology *symbology, const disti::GeoRect &region, IconIDList &icons, PathIDList &paths)=0
	Returns the list of symbols (icons and paths) that are visible in the given region.
virtual disti::DisplayObject *	GetIconGeometry (IconID iconID, disti::GlsMapSymbology *symbology)=0
virtual void	GetIconLocation (IconID iconID, disti::GeoCoord &locationOut)=0
virtual disti::DisplayObject *	GetPathGeometry (PathID pathID, disti::GlsMapSymbology *symbology)=0
virtual long	GetPathPointCount (PathID pathID)=0
	Returns the number of points that make up the path.
virtual void	GetPathPointLocation (PathID pathID, long pointNum, disti::GeoCoord &locationOut)=0
	Returns the location of the given point in the path.
virtual void	SetupIconForRendering (disti::GlsMapSymbology *symbology, IconID iconID, disti::DisplayObject *iconGeometry)=0
	Called immediately before each icon is drawn to allow the data source to make changes to the geometry if desired.
virtual void	SetupPathForRendering (disti::GlsMapSymbology *symbology, PathID pathID, disti::DisplayObject *pathGeometry)=0
	Called immediately before each path is drawn to allow the data source to make changes to the geometry if desired.
virtual void	PostDraw (disti::GlsMapView *view, disti::GlsMapSymbology *symbology)=0

Detailed Description

abstract interface to the symbology data This interface allows the user to define a new data source to substitute their data for the standard symbology data source. More than one GlsMapSymbology may reference a single MapSymbologyDataSource

Member Function Documentation

virtual disti::DisplayObject* GetIconGeometry ( IconID  iconID, disti::GlsMapSymbology *  symbology  )

pure virtual

Returns the DisplayObject to use for rendering the given icon or NULL if no icon should be drawn

Parameters

iconID	Must be a valid icon ID (obtained from GetSymbolsInRegion())
symbology	symbology group that contains the DisplayObject that will be used to draw the given icon.

Implemented in GlsMapSymbologyBasicDataSource< IconT, PathT >, and GlsMapSymbologyBasicDataSource< GlsMapSymbologyStdIcon, GlsMapSymbologyStdPath >.

virtual void GetIconLocation ( IconID  iconID, disti::GeoCoord &  locationOut  )

pure virtual

Get the location of the given point

Parameters

iconID	Must be a valid icon ID (obtained from GetSymbolsInRegion())
locationOut	Will contain the location of the icon after the method returns

Implemented in GlsMapSymbologyBasicDataSource< IconT, PathT >, and GlsMapSymbologyBasicDataSource< GlsMapSymbologyStdIcon, GlsMapSymbologyStdPath >.

virtual disti::DisplayObject* GetPathGeometry ( PathID  pathID, disti::GlsMapSymbology *  symbology  )

pure virtual

Returns the DisplayObject to use for rendering the path or NULL to use the default path rendering

Implemented in GlsMapSymbologyBasicDataSource< IconT, PathT >, and GlsMapSymbologyBasicDataSource< GlsMapSymbologyStdIcon, GlsMapSymbologyStdPath >.

virtual void PostDraw ( disti::GlsMapView *  view, disti::GlsMapSymbology *  symbology  )

pure virtual

Called after all the symbols have been drawn to allow the data source to perform additional rendering if needed.

Implemented in GlsMapSymbologyBasicDataSource< IconT, PathT >, and GlsMapSymbologyBasicDataSource< GlsMapSymbologyStdIcon, GlsMapSymbologyStdPath >.

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The documentation for this class was generated from the following file:

• gls_map_symbology_data_source.h