Source for org.jfree.chart.editor.PaletteSample

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
   6:  *
   7:  * Project Info:  http://www.jfree.org/jfreechart/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  *
  27:  * ------------------
  28:  * PaletteSample.java
  29:  * ------------------
  30:  * (C) Copyright 2002-2007, by David M. O'Donnell.
  31:  *
  32:  * Original Author:  David M. O'Donnell;
  33:  * Contributor(s):   David Gilbert (for Object Refinery Limited);
  34:  *
  35:  * $Id: PaletteSample.java,v 1.1.2.2 2007/01/31 15:56:18 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 21-Jan-2003 : Added standard header (DG);
  40:  * ------------- JFREECHART 1.0.x ---------------------------------------------
  41:  * 31-Jan-2007 : Deprecated (DG);
  42:  *
  43:  */
  44: 
  45: package org.jfree.chart.editor;
  46: 
  47: import java.awt.BasicStroke;
  48: import java.awt.Component;
  49: import java.awt.Dimension;
  50: import java.awt.Graphics;
  51: import java.awt.Graphics2D;
  52: import java.awt.Insets;
  53: import java.awt.RenderingHints;
  54: import java.awt.geom.Line2D;
  55: 
  56: import javax.swing.JComponent;
  57: import javax.swing.JList;
  58: import javax.swing.ListCellRenderer;
  59: 
  60: import org.jfree.chart.plot.ColorPalette;
  61: import org.jfree.chart.plot.XYPlot;
  62: import org.jfree.chart.renderer.xy.XYBlockRenderer;
  63: 
  64: 
  65: /**
  66:  * A panel that displays a palette sample.
  67:  *
  68:  * @deprecated This class is no longer supported.  If you are creating
  69:  *     contour plots, please try to use {@link XYPlot} and 
  70:  *     {@link XYBlockRenderer}.
  71:  */
  72: public class PaletteSample extends JComponent implements ListCellRenderer {
  73: 
  74:     /** The palette being displayed. */
  75:     private ColorPalette palette;
  76: 
  77:     /** The preferred size of the component; */
  78:     private Dimension preferredSize;
  79: 
  80:     /**
  81:      * Creates a new sample.
  82:      *
  83:      * @param palette  the palette.
  84:      */
  85:     public PaletteSample(ColorPalette palette) {
  86:         this.palette = palette;
  87:         this.preferredSize = new Dimension(80, 18);
  88:     }
  89: 
  90:     /**
  91:      * Returns a list cell renderer for the stroke, so the sample can be 
  92:      * displayed in a list or combo.
  93:      *
  94:      * @param list  the list component.
  95:      * @param value  the value.
  96:      * @param index  the index.
  97:      * @param isSelected  a flag that indicates whether or not the item is 
  98:      *                    selected.
  99:      * @param cellHasFocus  a flag that indicates whether or not the cell has 
 100:      *                      the focus.
 101:      *
 102:      * @return The renderer.
 103:      */
 104:     public Component getListCellRendererComponent(JList list, Object value, 
 105:                                                   int index,
 106:                                                   boolean isSelected, 
 107:                                                   boolean cellHasFocus) {
 108:         if (value instanceof PaletteSample) {
 109:             PaletteSample in = (PaletteSample) value;
 110:             setPalette(in.getPalette());
 111:         }
 112:         return this;
 113:     }
 114: 
 115:     /**
 116:      * Returns the current palette object being displayed.
 117:      *
 118:      * @return The palette.
 119:      */
 120:     public ColorPalette getPalette() {
 121:         return this.palette;
 122:     }
 123: 
 124:     /**
 125:      * Returns the preferred size of the component.
 126:      *
 127:      * @return The preferred size.
 128:      */
 129:     public Dimension getPreferredSize() {
 130:         return this.preferredSize;
 131:     }
 132: 
 133:     /**
 134:      * Draws the sample.
 135:      *
 136:      * @param g  the graphics device.
 137:      */
 138:     public void paintComponent(Graphics g) {
 139: 
 140:         Graphics2D g2 = (Graphics2D) g;
 141:         g2.setRenderingHint(
 142:             RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF
 143:         );
 144:         Dimension size = getSize();
 145:         Insets insets = getInsets();
 146:         double ww = size.getWidth() - insets.left - insets.right;
 147:         double hh = size.getHeight() - insets.top - insets.bottom;
 148: 
 149:         g2.setStroke(new BasicStroke(1.0f));
 150: 
 151:         double y1 = insets.top;
 152:         double y2 = y1 + hh;
 153:         double xx = insets.left;
 154:         Line2D line = new Line2D.Double();
 155:         int count = 0;
 156:         while (xx <= insets.left + ww) {
 157:             count++;
 158:             line.setLine(xx, y1, xx, y2);
 159:             g2.setPaint(this.palette.getColor(count));
 160:             g2.draw(line);
 161:             xx += 1;
 162:         }
 163:     }
 164: 
 165:     /**
 166:      * Sets the palette object being displayed.
 167:      *
 168:      * @param palette  the palette.
 169:      */
 170:     public void setPalette(ColorPalette palette) {
 171:         this.palette = palette;
 172:         this.repaint();
 173:     }
 174: 
 175: }