| gvSIG desktop 1

/* gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib��ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.fmap.core.symbols;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.geom.AffineTransform;

import javax.print.attribute.PrintRequestAttributeSet;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.core.IPrintable;

import com.iver.utiles.IPersistance;

import com.iver.utiles.XMLEntity;

/**

 * @author   jaume dominguez faus - jaume.dominguez@iver.es

 */

public interface ISymbol extends IPersistance, IPrintable{

        public static Color SELECTION_COLOR = Color.YELLOW;

        /**

         * Returns the derived version of the symbol that will be used to draw the

         * feature when it is selected.

         * @return <b>ISymbol</b> applied to a feature when it has been selected.

         */

        public ISymbol getSymbolForSelection();

        public void draw(Graphics2D g, AffineTransform affineTransform, FShape shp);

        // In the future, we may need something like that, but now if

        // I put it, we should change the rendering process, and it will

        // be slowly.

        // El problema es que antes de renderizar algo, tenemos que calcular

        // c�mo va a quedar en pantalla, para saber su bounding box real y si

        // hay que dibujarlo o no. Pasa con los textos, pero en general

        // con cualquier s�mbolo de tipo puntual, tambi�n. En menor medida con

        // l�neas y pol�gonos.

        //

        // IDEA!!!:

        // Para no depender de leer un shape y pedirle al s�mbolo que toca

        // el bounding box para ver si hay que dibujarlo, se puede hacer una

        // pasada previa por la leyenda y ver los pixels que a�ade al bounding

        // box. (Se coge un punto, una l�nea o un pol�gono, y se calcula

        // su bounding box para esa escala. Si es mayor que el original del

        // shape, se calculan los pixels. Luego se pasan esos pixels a

        // coordenadas de mundo real, y se le suman al visibleExtent para que

        // se dibujen los trozos de texto que no se pintan, etc, etc.

        public int getPixExtentPlus(Graphics2D g, AffineTransform affineTransform, Shape shp);

        /**

         * Devuelve el rgb del s�mbolo cuando se dibuja como un punto.

         *

         * @return rgb del s�mbolo.

         */

        public int getOnePointRgb();

        /**

         * Use it to specify how do you want to write the symbol in .gvp project

         * @return

         */

        public XMLEntity getXMLEntity();

        /**

         * Called by the factory, this method will set up the symbol and after call it, the

         * symbol must be fully functional and ready to be used.

         */

        public void setXMLEntity(XMLEntity xml);

        /**

         * The description is a human-readable text used to label it when show in a symbol menu or something like that.

         * @return   description of this symbol.

         * @uml.property  name="description"

         */

        public String getDescription();

        /**

         * Tells whether the shape of the symbol will be drawn or not.

         *

         * @return <b>true</b> if Shape must be drawn. Useful if you are labelling

         */

        public boolean isShapeVisible();

        /**

         * Sets the description of this symbol

         * @param   desc, a string with the description

         * @see   ISymbol.getDescription();

         * @uml.property  name="description"

         */

        public void setDescription(String desc);

        /**

         * The use of this method -and its mechanism- is being valorated. It probably

         * will be <b>deprecated</b>.

         * @return FSymbol constants. I think it is better to use isSuitableFor

         *

         */

        public int getSymbolType();

        /**

         * True if this symbol is ok for the geometry. For example, a FillSymbol will

         * be suitable for a Polygon.

         * @param geom

         * @return

         */

        public boolean isSuitableFor(IGeometry geom);

        /**

         * Useful to render the symbol inside the TOC, or inside little

         * rectangles. For example, think about rendering a Label with size

         * in meters => You will need to specify a size in pixels.

         * Of course, you can also to choose to render a prepared image, etc.

         * @param g2

         * @param scaleInstance

         * @param r

         */

        public void drawInsideRectangle(Graphics2D g, AffineTransform scaleInstance, Rectangle r);

}