001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ------------------- 028 * CategoryAxis3D.java 029 * ------------------- 030 * (C) Copyright 2003-2005, by Klaus Rheinwald and Contributors. 031 * 032 * Original Author: Klaus Rheinwald; 033 * Contributor(s): Tin Luu, 034 * David Gilbert (for Object Refinery Limited); 035 * 036 * Changes 037 * ------- 038 * 19-Feb-2003 : File creation; 039 * 21-Mar-2003 : Added to JFreeChart CVS, see bug id 685501 for code 040 * contribution from KR (DG); 041 * 26-Mar-2003 : Implemented Serializable (DG); 042 * 13-May-2003 : Renamed HorizontalCategoryAxis3D --> CategoryAxis3D, and 043 * modified to take into account the plot orientation (DG); 044 * 14-Aug-2003 : Implemented Cloneable (DG); 045 * 21-Aug-2003 : Fixed draw() method bugs (DG); 046 * 22-Mar-2004 : Added workaround for bug 920959 (null pointer exception with 047 * no renderer) (DG); 048 * 049 */ 050 051 package org.jfree.chart.axis; 052 053 import java.awt.Graphics2D; 054 import java.awt.geom.Rectangle2D; 055 import java.io.Serializable; 056 057 import org.jfree.chart.Effect3D; 058 import org.jfree.chart.plot.CategoryPlot; 059 import org.jfree.chart.plot.PlotRenderingInfo; 060 import org.jfree.chart.renderer.category.CategoryItemRenderer; 061 import org.jfree.ui.RectangleEdge; 062 063 /** 064 * An axis that displays categories and has a 3D effect. 065 * Used for bar charts and line charts. 066 * 067 * @author Klaus Rheinwald 068 */ 069 public class CategoryAxis3D extends CategoryAxis 070 implements Cloneable, Serializable { 071 072 /** For serialization. */ 073 private static final long serialVersionUID = 4114732251353700972L; 074 075 /** 076 * Creates a new axis. 077 */ 078 public CategoryAxis3D() { 079 this(null); 080 } 081 082 /** 083 * Creates a new axis using default attribute values. 084 * 085 * @param label the axis label (<code>null</code> permitted). 086 */ 087 public CategoryAxis3D(String label) { 088 super(label); 089 } 090 091 /** 092 * Draws the axis on a Java 2D graphics device (such as the screen or a 093 * printer). 094 * 095 * @param g2 the graphics device (<code>null</code> not permitted). 096 * @param cursor the cursor location. 097 * @param plotArea the area within which the axis should be drawn 098 * (<code>null</code> not permitted). 099 * @param dataArea the area within which the plot is being drawn 100 * (<code>null</code> not permitted). 101 * @param edge the location of the axis (<code>null</code> not permitted). 102 * @param plotState collects information about the plot (<code>null</code> 103 * permitted). 104 * 105 * @return The axis state (never <code>null</code>). 106 */ 107 public AxisState draw(Graphics2D g2, 108 double cursor, 109 Rectangle2D plotArea, 110 Rectangle2D dataArea, 111 RectangleEdge edge, 112 PlotRenderingInfo plotState) { 113 114 // if the axis is not visible, don't draw it... 115 if (!isVisible()) { 116 return new AxisState(cursor); 117 } 118 119 // calculate the adjusted data area taking into account the 3D effect... 120 // this assumes that there is a 3D renderer, all this 3D effect is a 121 // bit of an ugly hack... 122 CategoryPlot plot = (CategoryPlot) getPlot(); 123 124 Rectangle2D adjustedDataArea = new Rectangle2D.Double(); 125 if (plot.getRenderer() instanceof Effect3D) { 126 Effect3D e3D = (Effect3D) plot.getRenderer(); 127 double adjustedX = dataArea.getMinX(); 128 double adjustedY = dataArea.getMinY(); 129 double adjustedW = dataArea.getWidth() - e3D.getXOffset(); 130 double adjustedH = dataArea.getHeight() - e3D.getYOffset(); 131 132 if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) { 133 adjustedY += e3D.getYOffset(); 134 } 135 else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) { 136 adjustedX += e3D.getXOffset(); 137 } 138 adjustedDataArea.setRect( 139 adjustedX, adjustedY, adjustedW, adjustedH 140 ); 141 } 142 else { 143 adjustedDataArea.setRect(dataArea); 144 } 145 146 // draw the category labels and axis label 147 AxisState state = new AxisState(cursor); 148 state = drawCategoryLabels( 149 g2, adjustedDataArea, edge, state, plotState 150 ); 151 state = drawLabel(getLabel(), g2, plotArea, dataArea, edge, state); 152 153 return state; 154 155 } 156 157 /** 158 * Returns the Java 2D coordinate for a category. 159 * 160 * @param anchor the anchor point. 161 * @param category the category index. 162 * @param categoryCount the category count. 163 * @param area the data area. 164 * @param edge the location of the axis. 165 * 166 * @return The coordinate. 167 */ 168 public double getCategoryJava2DCoordinate(CategoryAnchor anchor, 169 int category, 170 int categoryCount, 171 Rectangle2D area, 172 RectangleEdge edge) { 173 174 double result = 0.0; 175 Rectangle2D adjustedArea = area; 176 CategoryPlot plot = (CategoryPlot) getPlot(); 177 CategoryItemRenderer renderer = plot.getRenderer(); 178 if (renderer instanceof Effect3D) { 179 Effect3D e3D = (Effect3D) renderer; 180 double adjustedX = area.getMinX(); 181 double adjustedY = area.getMinY(); 182 double adjustedW = area.getWidth() - e3D.getXOffset(); 183 double adjustedH = area.getHeight() - e3D.getYOffset(); 184 185 if (edge == RectangleEdge.LEFT || edge == RectangleEdge.BOTTOM) { 186 adjustedY += e3D.getYOffset(); 187 } 188 else if (edge == RectangleEdge.RIGHT || edge == RectangleEdge.TOP) { 189 adjustedX += e3D.getXOffset(); 190 } 191 adjustedArea = new Rectangle2D.Double( 192 adjustedX, adjustedY, adjustedW, adjustedH 193 ); 194 } 195 196 if (anchor == CategoryAnchor.START) { 197 result = getCategoryStart( 198 category, categoryCount, adjustedArea, edge 199 ); 200 } 201 else if (anchor == CategoryAnchor.MIDDLE) { 202 result = getCategoryMiddle( 203 category, categoryCount, adjustedArea, edge 204 ); 205 } 206 else if (anchor == CategoryAnchor.END) { 207 result = getCategoryEnd( 208 category, categoryCount, adjustedArea, edge 209 ); 210 } 211 return result; 212 213 } 214 215 /** 216 * Returns a clone of the axis. 217 * 218 * @return A clone. 219 * 220 * @throws CloneNotSupportedException If the axis is not cloneable for 221 * some reason. 222 */ 223 public Object clone() throws CloneNotSupportedException { 224 return super.clone(); 225 } 226 227 }