Application: gvSIG desktop

/*

 * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI 

 * for visualizing and manipulating spatial features with geometry and attributes.

 *

 * Copyright (C) 2003 Vivid Solutions

 * 

 * 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:

 *

 * Vivid Solutions

 * Suite #1A

 * 2328 Government Street

 * Victoria BC  V8T 5G5

 * Canada

 *

 * (250)385-6040

 * www.vividsolutions.com

 */

package com.iver.cit.gvsig.gui.Panels;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.ArrayList;

import java.util.Iterator;

import javax.swing.BorderFactory;

import javax.swing.JButton;

import javax.swing.JColorChooser;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

/**

 * A custom Colour Scheme Browser - custom choices based on JColorChooser.

 */

public class ColorChooserPanel extends JPanel {

    GridBagLayout gridBagLayout1 = new GridBagLayout();

    JButton changeButton = new JButton();

    //{DEFECT-PREVENTION} In accessors, it's better to use "workbench = newWorkbench"

    //rather than "this.workbench = workbench", because otherwise if you misspell the

    //argument, Java won't complain! We should do this everywhere. [Jon Aquino]

    JPanel outerColorPanel = new JPanel();

    ColorPanel colorPanel = new ColorPanel();

    GridBagLayout gridBagLayout2 = new GridBagLayout();

    private Color color = Color.black;

    private int alpha;

    private ArrayList actionListeners = new ArrayList();

    public ColorChooserPanel() {

        try {

            jbInit();

            colorPanel.setLineColor(null);

            changeButton.setToolTipText("Browse");

        } catch (Exception ex) {

            ex.printStackTrace();

        }

    }

    void jbInit() throws Exception {

        this.setLayout(gridBagLayout1);

        changeButton.setMargin(new Insets(0, 0, 0, 0));

        changeButton.setText("   ...   ");

        changeButton.addActionListener(new java.awt.event.ActionListener() {

                public void actionPerformed(ActionEvent e) {

                    changeButton_actionPerformed(e);

                }

            });

        outerColorPanel.setBorder(BorderFactory.createLoweredBevelBorder());

        outerColorPanel.setPreferredSize(new Dimension(60, 20));

        outerColorPanel.setBackground(Color.white);

        outerColorPanel.setLayout(gridBagLayout2);

        colorPanel.setMargin(0);

        colorPanel.setPreferredSize(new Dimension(45, 8));

        this.add(changeButton,

            new GridBagConstraints(2, 0, 1, 1, 0.0, 0.0,

                GridBagConstraints.CENTER, GridBagConstraints.NONE,

                new Insets(0, 2, 0, 0), 0, 0));

        this.add(outerColorPanel,

            new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0,

                GridBagConstraints.CENTER, GridBagConstraints.NONE,

                new Insets(0, 0, 0, 0), 0, 0));

        outerColorPanel.add(colorPanel,

            new GridBagConstraints(0, 0, 1, 1, 0, 0,

                GridBagConstraints.CENTER, GridBagConstraints.NONE,

                new Insets(0, 0, 0, 0), 0, 0));

    }

    void changeButton_actionPerformed(ActionEvent e) {

        Color newColor = JColorChooser.showDialog(SwingUtilities.windowForComponent(this), "Choose Colour", color);

        if (newColor == null) {

            return;

        }

        setColor(newColor);

        fireActionPerformed();

    }

    public void setColor(Color color) {

        this.color = color;

        updateColorPanel();

    }

    private void updateColorPanel() {

        colorPanel.setFillColor(new Color(color.getRed(), color.getGreen(), color.getBlue(),alpha));

        colorPanel.repaint();

    }

    public void addActionListener(ActionListener l) {

        actionListeners.add(l);

    }

    public void removeActionListener(ActionListener l) {

        actionListeners.remove(l);

    }

    protected void fireActionPerformed() {

        for (Iterator i = actionListeners.iterator(); i.hasNext();) {

            ActionListener l = (ActionListener) i.next();

            l.actionPerformed(new ActionEvent(this, 0, null));

        }

    }

    public Color getColor() {

        return color;

    }

    //{CLARITY} Might be clearer to say "alpha" rather than "alpha".

    //This occurs in other places too. [Jon Aquino]

    public void setAlpha(int alpha) {

        this.alpha = alpha;

        updateColorPanel();

    }

    public void setEnabled(boolean newEnabled) {

        changeButton.setEnabled(newEnabled);

    }

}