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:  * Changes
  36:  * -------
  37:  * 21-Jan-2003 : Added standard header (DG);
  38:  * ------------- JFREECHART 1.0.x ---------------------------------------------
  39:  * 31-Jan-2007 : Deprecated (DG);
  40:  *
  41:  */
  42: 
  43: package org.jfree.chart.editor;
  44: 
  45: import java.awt.BasicStroke;
  46: import java.awt.Component;
  47: import java.awt.Dimension;
  48: import java.awt.Graphics;
  49: import java.awt.Graphics2D;
  50: import java.awt.Insets;
  51: import java.awt.RenderingHints;
  52: import java.awt.geom.Line2D;
  53: 
  54: import javax.swing.JComponent;
  55: import javax.swing.JList;
  56: import javax.swing.ListCellRenderer;
  57: 
  58: import org.jfree.chart.plot.ColorPalette;
  59: import org.jfree.chart.plot.XYPlot;
  60: import org.jfree.chart.renderer.xy.XYBlockRenderer;
  61: 
  62: 
  63: /**
  64:  * A panel that displays a palette sample.
  65:  *
  66:  * @deprecated This class is no longer supported (as of version 1.0.4).  If 
  67:  *     you are creating contour plots, please try to use {@link XYPlot} and 
  68:  *     {@link XYBlockRenderer}.
  69:  */
  70: public class PaletteSample extends JComponent implements ListCellRenderer {
  71: 
  72:     /** The palette being displayed. */
  73:     private ColorPalette palette;
  74: 
  75:     /** The preferred size of the component; */
  76:     private Dimension preferredSize;
  77: 
  78:     /**
  79:      * Creates a new sample.
  80:      *
  81:      * @param palette  the palette.
  82:      */
  83:     public PaletteSample(ColorPalette palette) {
  84:         this.palette = palette;
  85:         this.preferredSize = new Dimension(80, 18);
  86:     }
  87: 
  88:     /**
  89:      * Returns a list cell renderer for the stroke, so the sample can be 
  90:      * displayed in a list or combo.
  91:      *
  92:      * @param list  the list component.
  93:      * @param value  the value.
  94:      * @param index  the index.
  95:      * @param isSelected  a flag that indicates whether or not the item is 
  96:      *                    selected.
  97:      * @param cellHasFocus  a flag that indicates whether or not the cell has 
  98:      *                      the focus.
  99:      *
 100:      * @return The renderer.
 101:      */
 102:     public Component getListCellRendererComponent(JList list, Object value, 
 103:                                                   int index,
 104:                                                   boolean isSelected, 
 105:                                                   boolean cellHasFocus) {
 106:         if (value instanceof PaletteSample) {
 107:             PaletteSample in = (PaletteSample) value;
 108:             setPalette(in.getPalette());
 109:         }
 110:         return this;
 111:     }
 112: 
 113:     /**
 114:      * Returns the current palette object being displayed.
 115:      *
 116:      * @return The palette.
 117:      */
 118:     public ColorPalette getPalette() {
 119:         return this.palette;
 120:     }
 121: 
 122:     /**
 123:      * Returns the preferred size of the component.
 124:      *
 125:      * @return The preferred size.
 126:      */
 127:     public Dimension getPreferredSize() {
 128:         return this.preferredSize;
 129:     }
 130: 
 131:     /**
 132:      * Draws the sample.
 133:      *
 134:      * @param g  the graphics device.
 135:      */
 136:     public void paintComponent(Graphics g) {
 137: 
 138:         Graphics2D g2 = (Graphics2D) g;
 139:         g2.setRenderingHint(
 140:             RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF
 141:         );
 142:         Dimension size = getSize();
 143:         Insets insets = getInsets();
 144:         double ww = size.getWidth() - insets.left - insets.right;
 145:         double hh = size.getHeight() - insets.top - insets.bottom;
 146: 
 147:         g2.setStroke(new BasicStroke(1.0f));
 148: 
 149:         double y1 = insets.top;
 150:         double y2 = y1 + hh;
 151:         double xx = insets.left;
 152:         Line2D line = new Line2D.Double();
 153:         int count = 0;
 154:         while (xx <= insets.left + ww) {
 155:             count++;
 156:             line.setLine(xx, y1, xx, y2);
 157:             g2.setPaint(this.palette.getColor(count));
 158:             g2.draw(line);
 159:             xx += 1;
 160:         }
 161:     }
 162: 
 163:     /**
 164:      * Sets the palette object being displayed.
 165:      *
 166:      * @param palette  the palette.
 167:      */
 168:     public void setPalette(ColorPalette palette) {
 169:         this.palette = palette;
 170:         this.repaint();
 171:     }
 172: 
 173: }