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.project.documents.view.legend.gui;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.geom.AffineTransform;

import java.awt.geom.Rectangle2D;

import java.util.ArrayList;

import javax.swing.BorderFactory;

import javax.swing.JComponent;

import org.gvsig.andami.PluginServices;

import org.gvsig.app.gui.styling.SymbolSelector;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolDrawingException;

import org.gvsig.i18n.Messages;

/**

 * Just a Button that shows an ISymbol instead a text.

 *

 * @author gvSIG Team

 *

 */

public class JSymbolPreviewButton extends JComponent implements MouseListener {

    private static final long serialVersionUID = -7878718124556977288L;

    private ISymbol prev;

    private boolean pressed;

    private int shapeType;

    private ArrayList<ActionListener> listeners;  //  @jve:decl-index=0:

    private ActionEvent event;

    private String actionCommand;

    /**

     * @return the actionCommand

     */

    public String getActionCommand() {

        return actionCommand;

    }

    /**

     * @param actionCommand the actionCommand to set

     */

    public void setActionCommand(String actionCommand) {

        this.actionCommand = actionCommand;

    }

    public JSymbolPreviewButton(int shapeType) {

        this(null, shapeType);

    }

    public JSymbolPreviewButton(ISymbol sym,

            int shapeType) {

        super();

        addMouseListener(this);

        mouseExited(null);

        setPreferredSize(new Dimension(150, 20));

        this.shapeType = shapeType;

        this.prev = sym;

    }

    @Override

    public void paint(Graphics g) {

        Rectangle bounds = getBounds();

        Graphics2D g2 = (Graphics2D) g;

        if (g2 != null) {

            g2.setStroke(new BasicStroke(2));

            g2.setColor(pressed && isEnabled() ? Color.GRAY : Color.WHITE);

            g2.drawLine(0, 0, (int) bounds.getWidth(), 0);

            g2.drawLine(0, 0, 0, (int) bounds.getHeight());

            g2.setColor(pressed && isEnabled() ? Color.WHITE : Color.GRAY);

            g2.drawLine(2, (int) bounds.getHeight(), (int) bounds.getWidth(), (int) bounds.getHeight());

            g2.drawLine((int) bounds.getWidth(), 0, (int) bounds.getWidth(), (int) bounds.getHeight());

            int _margin = 5;

            Rectangle2D r = new Rectangle2D.Double(

                    _margin, _margin,

                    bounds.getWidth() - 2 * _margin,

                    bounds.getHeight() - 2 * _margin);

            if (prev != null) {

                try {

                    prev.drawInsideRectangle(g2,

                            new AffineTransform(), r.getBounds());

                } catch (SymbolDrawingException e) {

                    if (e.getType() == SymbolDrawingException.UNSUPPORTED_SET_OF_SETTINGS) {

                        try {

                            MapContextLocator.getSymbolManager()

                                    .getWarningSymbol(

                                            SymbolDrawingException.STR_UNSUPPORTED_SET_OF_SETTINGS,

                                            prev.getDescription(),

                                            SymbolDrawingException.UNSUPPORTED_SET_OF_SETTINGS)

                                    .drawInsideRectangle(g2, g2.getTransform(),

                                            r.getBounds());

                        } catch (SymbolDrawingException e1) {

                            // IMPOSSIBLE TO REACH THIS

                        }

                    } else {

                        // should be unreachable code

                        throw new Error(Messages.getText("symbol_shapetype_mismatch"));

                    }

                }

            }

        }

    }

    public void setSymbol(ISymbol symbol) {

        this.prev = symbol;

        this.repaint();

        // paintImmediately(getBounds());

    }

    @Override

    public void mouseClicked(MouseEvent e) {

        if (e.getButton() == MouseEvent.BUTTON1) {

            ISymbolSelector sSelect = SymbolSelector.createSymbolSelector(prev, shapeType);

            PluginServices.getMDIManager().addWindow(sSelect);

            if (sSelect.getSelectedObject() != null) {

                setSymbol((ISymbol) sSelect.getSelectedObject());

                fireActionListeners();

            }

        }

    }

    private void fireActionListeners() {

        if (!isEnabled()) {

            return;

        }

        if (listeners != null) {

            if (event == null) {

                event = new ActionEvent(this, 0, actionCommand);

            }

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

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

                        event);

            }

        }

    }

    @Override

    public void mouseEntered(MouseEvent e) {

    }

    @Override

    public void mouseExited(MouseEvent e) {

        setBorder(BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));

        pressed = false;

        paintImmediately(getBounds());

    }

    @Override

    public void mousePressed(MouseEvent e) {

        setBorder(BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED));

        pressed = true;

        paintImmediately(getBounds());

    }

    @Override

    public void mouseReleased(MouseEvent e) {

        if (pressed) {

            mouseClicked(e);

        }

        mouseExited(e);

    }

    public ISymbol getSymbol() {

        return prev;

    }

    public void addActionListener(ActionListener l) {

        if (listeners == null) {

            listeners = new ArrayList<>();

        }

        listeners.add(l);

    }

    public void setShapeType(int shapeType) {

        this.shapeType = shapeType;

    }

}