svn-gvsig-desktop / trunk / extensions / extRasterTools-SE / src / org / gvsig / raster / beans / canvas / GCanvas.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.Cursor; |
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import java.awt.Graphics; |
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import java.awt.event.MouseEvent; |
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import java.awt.event.MouseListener; |
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import java.awt.event.MouseMotionListener; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import javax.swing.JPanel; |
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/**
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* Canvas donde se pintan objetos GLine
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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 class GCanvas extends JPanel implements MouseListener, MouseMotionListener { |
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private static final long serialVersionUID = 5431466034535083594L; |
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private Color backgroundColor = Color.WHITE; |
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private ArrayList drawableElements = new ArrayList(); |
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public static final int DEFAULT_CURSOR = Cursor.DEFAULT_CURSOR; |
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private boolean hasMouse = false; |
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//Tama?o del canvas asignado externamente
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private int x = -1; |
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private int y = -1; |
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private int w = -1; |
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private int h = -1; |
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private ArrayList actionCommandListeners = new ArrayList(); |
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/**
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* Contructor.Inicializa el objeto asignando color de fondo. Considera que el objeto
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* GLine ya tiene su color asignado.
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* @param line Objeto l?nea
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* @param backgroundColor
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*/
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public GCanvas(Color backgroundColor) { |
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this.backgroundColor = backgroundColor;
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addMouseListener(this);
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addMouseMotionListener(this);
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} |
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/**
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* A?adir un listener a la lista de eventos
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* @param listener
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*/
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public void addValueChangedListener(IGCanvasListener listener) { |
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if (!actionCommandListeners.contains(listener))
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actionCommandListeners.add(listener); |
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} |
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/**
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* Borrar un listener de la lista de eventos
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* @param listener
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*/
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public void removeValueChangedListener(IGCanvasListener listener) { |
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actionCommandListeners.remove(listener); |
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} |
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/**
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* Invocar a los eventos asociados al componente
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*/
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public void callDataChanged(String key, Object value) { |
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Iterator iterator = actionCommandListeners.iterator();
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while (iterator.hasNext()) {
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IGCanvasListener listener = (IGCanvasListener) iterator.next(); |
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listener.actionDataChanged(new GCanvasEvent(this, key, value)); |
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} |
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} |
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/**
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* Invocar a los eventos asociados al componente
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*/
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public void callDataDragged(String key, Object value) { |
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Iterator iterator = actionCommandListeners.iterator();
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while (iterator.hasNext()) {
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IGCanvasListener listener = (IGCanvasListener) iterator.next(); |
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listener.actionDataDragged(new GCanvasEvent(this, key, value)); |
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} |
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} |
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/**
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* Asigna un elemento dibujable a la lista
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* @param element
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*/
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public void setDrawableElement(DrawableElement element) { |
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element.setCanvas(this);
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drawableElements.add(element); |
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} |
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/**
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* Obtiene la lista de elementos dibujables
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* @return
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*/
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public ArrayList getDrawableElements() { |
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return drawableElements;
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} |
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/**
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* Inicializa el fondo y dibuja el gr?fico sobre el canvas.
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*/
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public void paint(Graphics g) { |
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g.setColor(backgroundColor); |
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g.fillRect(getVisibleRect().x, getVisibleRect().y, getVisibleRect().width, getVisibleRect().height); |
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for (int i = 0; i < drawableElements.size(); i++) |
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((DrawableElement)drawableElements.get(i)).draw(g); |
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} |
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/**
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* Ejecuta las acciones antes del primer dibujado de todos
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* los elementos dibujables
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*/
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public void execFirstDrawActions() { |
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for (int i = 0; i < drawableElements.size(); i++) |
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((DrawableElement)drawableElements.get(i)).firstDrawActions(); |
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} |
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/**
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* Obtiene la posici?n m?nima en X del canvas donde comenzar a dibujar
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* @return
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*/
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public int getCanvasMinX() { |
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return (x > -1) ? x : getVisibleRect().x; |
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} |
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/**
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* Obtiene la posici?n m?nima en Y del canvas donde comenzar a dibujar
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* @return
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*/
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public int getCanvasMinY() { |
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return (y > -1) ? y : getVisibleRect().y; |
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} |
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/**
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* Obtiene la posici?n m?xima en X del canvas donde terminar el dibujado
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* @return
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*/
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public int getCanvasMaxX() { |
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return (x > -1) ? (x + w) : getVisibleRect().width; |
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} |
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/**
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* Obtiene la posici?n m?xima en Y del canvas donde terminar el dibujado
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* @return
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*/
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public int getCanvasMaxY() { |
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return (y > -1) ? (y + h) : getVisibleRect().width; |
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} |
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/**
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* Obtiene el ancho del canvas sumando a partir de getCanvasX donde termina el ?rea de dibujo
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* @return
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*/
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public int getCanvasWidth() { |
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return (w > -1) ? w : getVisibleRect().width; |
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} |
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/**
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* Obtiene el alto del canvas sumando a partir de getCanvasY donde termina el ?rea de dibujo
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* @return
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*/
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public int getCanvasHeight() { |
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return (h > -1) ? h : getVisibleRect().height; |
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} |
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/**
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* Asigna el valor para la posici?n m?nima en X del canvas
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* @param x Posici?n m?nima en X donde se puede empezar a dibujar
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*/
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public void setCanvasX(int x) { |
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this.x = x;
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} |
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/**
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* Asigna el valor para la posici?n m?nima en Y del canvas
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* @param y Posici?n m?nima en Y donde se puede empezar a dibujar
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*/
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public void setCanvasY(int y) { |
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this.y = y;
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} |
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/**
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* Asigna el valor para ancho del canvas
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* @param w Ancho del canvas
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*/
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public void setCanvasWidth(int w) { |
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this.w = w;
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} |
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/**
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* Asigna el valor para el alto del canvas
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* @param h Alto del canvas
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*/
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public void setCanvasHeight(int h) { |
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this.h = h;
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
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*/
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public void mousePressed(MouseEvent e) { |
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for (int i = drawableElements.size() - 1; i >= 0 ; i--) |
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if (!((DrawableElement) drawableElements.get(i)).mousePressed(e))
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return;
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
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*/
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public void mouseReleased(MouseEvent e) { |
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for (int i = drawableElements.size() - 1; i >= 0 ; i--) |
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if (!((DrawableElement) drawableElements.get(i)).mouseReleased(e))
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return;
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this.mouseMoved(e);
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
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*/
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public void mouseDragged(MouseEvent e) { |
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for (int i = drawableElements.size() - 1; i >= 0 ; i--) |
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if (!((DrawableElement) drawableElements.get(i)).mouseDragged(e))
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return;
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
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*/
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public void mouseMoved(MouseEvent e) { |
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for (int i = drawableElements.size() - 1; i >= 0 ; i--) |
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if (!((DrawableElement) drawableElements.get(i)).mouseMoved(e))
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return;
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setCursor(new Cursor(Cursor.DEFAULT_CURSOR)); |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
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*/
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public void mouseEntered(MouseEvent e) { |
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hasMouse = true;
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repaint(); |
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for (int i = drawableElements.size() - 1; i >= 0 ; i--) |
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if (!((DrawableElement) drawableElements.get(i)).mouseEntered(e))
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return;
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
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*/
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public void mouseExited(MouseEvent e) { |
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hasMouse = false;
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repaint(); |
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for (int i = drawableElements.size() - 1; i >= 0 ; i--) |
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if (!((DrawableElement) drawableElements.get(i)).mouseExited(e))
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return;
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} |
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/**
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* Devuelve si en ese momento el raton esta sobre el canvas
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* @return
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*/
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public boolean isMouse() { |
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return hasMouse;
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} |
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public void mouseClicked(MouseEvent e) {} |
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} |