palettechooserpanel.java

jfreechart安装程序和使用说明

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ------------------------
 * PaletteChooserPanel.java
 * ------------------------
 * (C) Copyright 2002-2004, by David M. O'Donnell.
 *
 * Original Author:  David M. O'Donnell;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: PaletteChooserPanel.java,v 1.1 2004/08/31 14:54:21 mungady Exp $
 *
 * Changes
 * -------
 * 27-Jan-2003 : Added standard header (DG);
 *
 */

package org.jfree.chart.ui;

import java.awt.BorderLayout;

import javax.swing.JComboBox;
import javax.swing.JPanel;

/**
 * A component for choosing a palette from a list of available palettes.
 *
 * @author David M. O'Donnell.
 */
public class PaletteChooserPanel extends JPanel {

    /** A combo for selecting the stroke. */
    private JComboBox selector;

    /**
     * Constructor.
     *
     * @param current  the current palette sample.
     * @param available  an array of 'available' palette samples.
     */
    public PaletteChooserPanel(PaletteSample current, PaletteSample[] available) {
        setLayout(new BorderLayout());
        this.selector = new JComboBox(available);
        this.selector.setSelectedItem(current);
        this.selector.setRenderer(new PaletteSample(new RainbowPalette()));
        add(this.selector);
    }

    /**
     * Returns the selected palette.
     *
     * @return The selected palette.
     */
    public ColorPalette getSelectedPalette() {
        PaletteSample sample = (PaletteSample) this.selector.getSelectedItem();
        return sample.getPalette();
    }
}