/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
* (C) 2008, Open Geospatial Consortium Inc.
*
* All Rights Reserved. http://www.opengis.org/legal/
*/
package org.opengis.style;
import org.opengis.annotation.Extension;
import org.opengis.filter.expression.Expression;
import org.opengis.annotation.XmlElement;
import org.opengis.annotation.XmlParameter;
/**
* Indicates how the interior of polygons will be filled.
*
*
* @source $URL: http://svn.osgeo.org/geotools/branches/2.7.x/modules/library/opengis/src/main/java/org/opengis/style/Fill.java $
* @version <A HREF="http://www.opengeospatial.org/standards/symbol">Symbology Encoding Implementation Specification 1.1.0</A>
* @author Open Geospatial Consortium
* @author Johann Sorel (Geomatys)
* @author Chris Dillard (SYS Technologies)
* @since GeoAPI 2.2
*/
@XmlElement("Fill")
public interface Fill {
/**
* If this object is to be filled with tiled copies of an image, then returns
* a non-null Graphic that indicates what image should be drawn.
*
* @return Graphic object or null if no graphic pattern to use.
*/
@XmlElement("GraphicFill")
GraphicFill getGraphicFill();
//*************************************************************
// SVG PARAMETERS
//*************************************************************
/**
* Indicates the color to be used for solid-filling the interior of polygons.
* The format of the color is {@code "#rrggbb"} where {@code rr}, {@code gg},
* and {@code bb} are two digit hexadecimal integers specify the red, green,
* and blue color intensities, repsectively. If null, the default color is
* 50% gray, {@code "#808080"}.
*
* @return Expression : if null the color used shall be a 50% gray {@code "#808080"}.
*/
@XmlParameter("Fill")
Expression getColor();
/**
* Indicates the opacity of the fill. This value must be a floating point
* number ranging from 0.0 to 1.0, where 0.0 means completely transparent
* and 1.0 means completely opaque. If null, the default value is 1.0,
* completely opaque.
*
* @return Expression : if null, value used shall be 1.0
*/
@XmlParameter("Opacity")
Expression getOpacity();
/**
* calls the visit method of a StyleVisitor
*
* @param visitor the style visitor
*/
@Extension
Object accept(StyleVisitor visitor, Object extraData);
}