content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2008, 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
   * in the United States and other countries.]
   *
   * ------------------
   * PaletteSample.java
   * ------------------
   * (C) Copyright 2002-2008, by David M. O'Donnell.
   *
   * Original Author:  David M. O'Donnell;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * Changes
   * -------
   * 21-Jan-2003 : Added standard header (DG);
   * ------------- JFREECHART 1.0.x ---------------------------------------------
   * 31-Jan-2007 : Deprecated (DG);
   *
   */
  
  package org.jfree.chart.editor;
  
  import java.awt.BasicStroke;
  import java.awt.Component;
  import java.awt.Dimension;
  import java.awt.Graphics;
  import java.awt.Graphics2D;
  import java.awt.Insets;
  import java.awt.RenderingHints;
  import java.awt.geom.Line2D;
  
  import javax.swing.JComponent;
  import javax.swing.JList;
  import javax.swing.ListCellRenderer;
  
  import org.jfree.chart.plot.ColorPalette;
  import org.jfree.chart.plot.XYPlot;
  import org.jfree.chart.renderer.xy.XYBlockRenderer;
  
  
  /**
   * A panel that displays a palette sample.
   *
   * @deprecated This class is no longer supported (as of version 1.0.4).  If
   *     you are creating contour plots, please try to use {@link XYPlot} and
   *     {@link XYBlockRenderer}.
   */
  public class PaletteSample extends JComponent implements ListCellRenderer {
  
      /** The palette being displayed. */
      private ColorPalette palette;
  
      /** The preferred size of the component; */
      private Dimension preferredSize;
  
      /**
       * Creates a new sample.
       *
       * @param palette  the palette.
       */
      public PaletteSample(ColorPalette palette) {
          this.palette = palette;
          this.preferredSize = new Dimension(80, 18);
      }
  
      /**
       * Returns a list cell renderer for the stroke, so the sample can be
       * displayed in a list or combo.
       *
       * @param list  the list component.
       * @param value  the value.
       * @param index  the index.
       * @param isSelected  a flag that indicates whether or not the item is
       *                    selected.
       * @param cellHasFocus  a flag that indicates whether or not the cell has
       *                      the focus.
       *
       * @return The renderer.
       */
      public Component getListCellRendererComponent(JList list, Object value,
                                                    int index,
                                                    boolean isSelected,
                                                    boolean cellHasFocus) {
          if (value instanceof PaletteSample) {
              PaletteSample in = (PaletteSample) value;
              setPalette(in.getPalette());
          }
          return this;
      }
  
      /**
       * Returns the current palette object being displayed.
       *
       * @return The palette.
       */
      public ColorPalette getPalette() {
          return this.palette;
      }
  
      /**
       * Returns the preferred size of the component.
       *
       * @return The preferred size.
       */
      public Dimension getPreferredSize() {
          return this.preferredSize;
      }
  
      /**
       * Draws the sample.
       *
       * @param g  the graphics device.
       */
      public void paintComponent(Graphics g) {
  
          Graphics2D g2 = (Graphics2D) g;
          g2.setRenderingHint(
              RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF
          );
          Dimension size = getSize();
          Insets insets = getInsets();
          double ww = size.getWidth() - insets.left - insets.right;
          double hh = size.getHeight() - insets.top - insets.bottom;
  
          g2.setStroke(new BasicStroke(1.0f));
  
          double y1 = insets.top;
          double y2 = y1 + hh;
          double xx = insets.left;
          Line2D line = new Line2D.Double();
          int count = 0;
          while (xx <= insets.left + ww) {
              count++;
              line.setLine(xx, y1, xx, y2);
              g2.setPaint(this.palette.getColor(count));
              g2.draw(line);
              xx += 1;
          }
      }
  
      /**
       * Sets the palette object being displayed.
       *
       * @param palette  the palette.
       */
      public void setPalette(ColorPalette palette) {
          this.palette = palette;
          this.repaint();
      }
  
  }
  