org.geotools.renderer.style

Class ImageGraphicFactory

Object

ImageGraphicFactory

All Implemented Interfaces:

ExternalGraphicFactory, GraphicCache

public class ImageGraphicFactory
extends Object
implements ExternalGraphicFactory, GraphicCache

External graphic factory accepting an Expression that can be evaluated to a URL pointing to a image file. The format must be one of the mime types supported by the current JDK.

Author:

Andrea Aime - TOPP

Constructor Summary

Constructors

Constructor and Description
ImageGraphicFactory()

Method Summary

Modifier and Type	Method and Description
void	clearCache() Clear the graphic cache.
Icon	getIcon(Feature feature, Expression url, String format, int size) Turns the specified URL into an Icon, eventually using the Feature attributes to evaluate CQL expressions embedded in the url.
Set<String>	getSupportedMimeTypes() Returs the set of mime types supported by this factory
static void	resetCache() Images are cached by the factory, this method can be used to drop the cache

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImageGraphicFactory

public ImageGraphicFactory()

Method Detail

getIcon

public Icon getIcon(Feature feature,
                    Expression url,
                    String format,
                    int size)

Description copied from interface: ExternalGraphicFactory

Turns the specified URL into an Icon, eventually using the Feature attributes to evaluate CQL expressions embedded in the url.
The size parameter defines the size of the image (so that vector based symbols can be drawn at the specified size directly), or may be zero or negative if the size was not specified (in that case the "natural" size of the image will be used, which is the size in pixels for raster images, and 16 for any format that does not have a specific size, according to the SLD spec).
null will be returned if this factory cannot handle the provided url.

Specified by:

getIcon in interface ExternalGraphicFactory

getSupportedMimeTypes

public Set<String> getSupportedMimeTypes()

Returs the set of mime types supported by this factory

Returns:

resetCache

public static void resetCache()

Images are cached by the factory, this method can be used to drop the cache

clearCache

public void clearCache()

Description copied from interface: GraphicCache

Clear the graphic cache.

Specified by:

clearCache in interface GraphicCache