Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.app.gui.panels;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import java.awt.event.KeyEvent;

import java.awt.event.KeyListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.util.ArrayList;

import javax.swing.Icon;

import javax.swing.JPanel;

import javax.swing.JToggleButton;

import org.gvsig.andami.PluginServices;

import org.gvsig.gui.beans.swing.GridBagLayoutPanel;

import org.gvsig.gui.beans.swing.JIncrementalNumberField;

import org.gvsig.i18n.Messages;

/**

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

 */

public class ImageSizePanel extends JPanel implements KeyListener, MouseListener, ActionListener, FocusListener{

        /**

         * 

         */

        private static final long serialVersionUID = 4810686805894198593L;

        private static final Icon iconSelected = PluginServices.getIconTheme().get("chain");

        private static final Icon iconUnselected = PluginServices.getIconTheme().get("broken-chain");

        private JIncrementalNumberField widthTxt;

        private JIncrementalNumberField heightTxt;

        private double width, height;

        private JToggleButton lock;

        private double ratio;

        private boolean performing;

        private boolean locked = true;

        private ArrayList<ActionListener> listeners = new ArrayList<ActionListener>();

        public ImageSizePanel(){

                super();

                initialize();

        }

        /**

         * This method initializes this

         *

         */

        private void initialize() {

                final GridBagLayoutPanel aux = new GridBagLayoutPanel();

                setLayout(new BorderLayout());

                aux.addComponent(Messages.getText("width")+":",

                                widthTxt  = new JIncrementalNumberField(null, 5, 0, Double.MAX_VALUE, 1));

                aux.addComponent(Messages.getText("height")+":",

                                heightTxt = new JIncrementalNumberField(null, 5, 0, Double.MAX_VALUE, 1));

                setLayout(new BorderLayout());

                add(aux, BorderLayout.CENTER);

                JPanel lockPanel = new JPanel(null) {

                        private static final long serialVersionUID = -415551033800811412L;

                        protected void paintComponent(Graphics g) {

                                int y1 = widthTxt.getY() + widthTxt.getHeight()/2-3;

                                int y2 = heightTxt.getY() + heightTxt.getHeight()/2+3;

                                g.setColor(Color.DARK_GRAY);

                                g.drawLine(2, y1, getWidth()/2+2, y1);

                                g.drawLine(getWidth()/2+2, y1, getWidth()/2+2, y2);

                                g.drawLine(2, y2, getWidth()/2+2, y2);

                                lock.setBounds(3, widthTxt.getY()+13, getWidth()-2, 22);

                        }

                };

                lockPanel.setPreferredSize(new Dimension(20, 20));

                lock = new JToggleButton() {

                        private static final long serialVersionUID = 1668046192113822412L;

                        protected void paintComponent(Graphics g) {

                                setIcon(isSelected() ? iconSelected : iconUnselected);

                                super.paintComponent(g);

                        }

                };

                lock.setSelected(locked);

                lockPanel.add(lock);

                add(lockPanel, BorderLayout.EAST);

                widthTxt.addKeyListener(this);

                widthTxt.addMouseListener(this);

                widthTxt.addActionListener(this);

                widthTxt.addFocusListener(this);

                heightTxt.addKeyListener(this);

                heightTxt.addMouseListener(this);

                heightTxt.addActionListener(this);

                heightTxt.addFocusListener(this);

                lock.addMouseListener(this);

        }

        public void setImageSize(double width, double height) {

                this.width = width;

                widthTxt.setDouble(width);

                this.height = height;

                heightTxt.setDouble(height);

                this.ratio = width / height;

        }

        public void setImageSize(Dimension sz) {

                setImageSize(sz.getWidth(), sz.getHeight());

        }

        public double[] getImageDimension() {

                double[] d = new double[2];

                d[0] = width;

                d[1] = height;

                return d;

        }

        public void addActionListener(ActionListener l) {

                listeners.add(l);

        }

        public void keyPressed(KeyEvent e) { doIt(); }

        public void keyReleased(KeyEvent e) { doIt(); }

        public void keyTyped(KeyEvent e) { doIt(); }

        public void mouseClicked(MouseEvent e) { e.consume(); doIt(); }

        public void actionPerformed(ActionEvent e) { doIt(); }

        private void doIt() {

                if (!performing) {

                        performing = true;

                        if (locked != lock.isSelected()) {

                                locked = lock.isSelected();

                                ratio = widthTxt.getDouble() / heightTxt.getDouble();

                        } else if (locked && width != widthTxt.getDouble()){

                                width = widthTxt.getDouble();

                                height = width/ratio;

                                height = Math.round(height*100)/100;

                                heightTxt.setDouble(height);

                                fireActionPerformed();

                        } else if (locked && height != heightTxt.getDouble()) {

                                height = heightTxt.getDouble();

                                width = height*ratio;

                                width = Math.round(width*100)/100;

                                widthTxt.setDouble(width);

                                fireActionPerformed();

                        }

                        performing = false;

                }

        }

        private void fireActionPerformed() {

                for (int i = 0; i < listeners.size(); i++) {

                        ((ActionListener) listeners.get(i)).actionPerformed(

                                        new ActionEvent(this, 0, "IMAGE_RESIZED"));

                }

        }

        public void mouseEntered(MouseEvent e) { /* nothing */ }

        public void mouseExited(MouseEvent e) { /* nothing */ }

        public void mousePressed(MouseEvent e) {  /* nothing */ }

        public void mouseReleased(MouseEvent e) {  /* nothing */ }

        public void focusGained(FocusEvent arg0) {

                // TODO Auto-generated method stub

        }

        public void focusLost(FocusEvent arg0) {

                doIt();

        }

}