svn-gvsig-desktop / trunk / extensions / extRasterTools-SE / src / org / gvsig / raster / beans / canvas / DrawableElement.java @ 19361
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.beans.canvas; |
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import java.awt.Color; |
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import java.awt.Graphics; |
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import java.awt.event.MouseEvent; |
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/**
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* Clase base para los gr?ficos a dibujar sobre el canvas
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*
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* 14-oct-2007
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public abstract class DrawableElement { |
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protected Color color = Color.BLACK; |
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/**
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* Entorno donde se dibuja
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*/
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protected GCanvas canvas = null; |
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private boolean firstDraw = true; |
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/**
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* Dibujado del elemento gr?fico desde el GCanvas. Llamar? antes de dibujar a la funci?n firstDrawActions
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* @param g
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*/
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public void draw(Graphics g) { |
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if(firstDraw) {
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firstDrawActions(); |
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firstDraw = false;
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} |
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paint(g); |
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} |
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/**
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* Dibujado del elemento gr?fico
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* @param g
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*/
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protected abstract void paint(Graphics g); |
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/**
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* Acciones a ejecutar antes del primer dibujado
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*/
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public abstract void firstDrawActions(); |
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/**
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* Asigna el objeto JComponent donde se pintan los elementos.
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* @param canvas
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*/
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public void setCanvas(GCanvas canvas) { |
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this.canvas = canvas;
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} |
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/**
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* Asigna el color de la l?nea
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* @param c Color
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*/
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public void setColor(Color c) { |
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this.color = c;
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} |
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/**
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* Metodo que se ejecuta cuando se suelta el raton en el canvas
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* @param e
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* @return Si no se desea propagar el evento a otros drawables, devolver false.
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*/
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public boolean mouseReleased(MouseEvent e) { |
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return true; |
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} |
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/**
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* Metodo que se ejecuta cuando se presiona el raton en el canvas
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* @param e
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* @return Si no se desea propagar el evento a otros drawables, devolver false.
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*/
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public boolean mousePressed(MouseEvent e) { |
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return true; |
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} |
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/**
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* Metodo que se ejecuta cuando se esta dibujando con el raton en el canvas
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* @param e
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* @return Si no se desea propagar el evento a otros drawables, devolver false.
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*/
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public boolean mouseDragged(MouseEvent e) { |
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return true; |
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} |
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/**
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* Metodo que se ejecuta cuando se esta moviendo el raton sobre el canvas
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* @param e
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* @return Si no se desea propagar el evento a otros drawables, devolver false.
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*/
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public boolean mouseMoved(MouseEvent e) { |
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return true; |
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} |
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/**
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* Metodo que se ejecuta cuando entra el raton al canvas
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* @param e
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* @return
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*/
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public boolean mouseEntered(MouseEvent e) { |
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return true; |
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} |
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/**
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* Metodo que se ejecuta cuando sale el raton del canvas
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* @param e
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* @return
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*/
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public boolean mouseExited(MouseEvent e) { |
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return true; |
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} |
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} |