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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: * LineBorder.java 29: * --------------- 30: * (C) Copyright 2007, by Christo Zietsman and Contributors. 31: * 32: * Original Author: Christo Zietsman; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * $Id: LineBorder.java,v 1.1.2.1 2007/03/16 15:26:15 mungady Exp $ 36: * 37: * Changes: 38: * -------- 39: * 16-Mar-2007 : Version 1, contributed by Christo Zietsman with 40: * modifications by DG (DG); 41: * 42: */ 43: 44: package org.jfree.chart.block; 45: 46: import java.awt.BasicStroke; 47: import java.awt.Color; 48: import java.awt.Graphics2D; 49: import java.awt.Paint; 50: import java.awt.Stroke; 51: import java.awt.geom.Line2D; 52: import java.awt.geom.Rectangle2D; 53: import java.io.IOException; 54: import java.io.ObjectInputStream; 55: import java.io.ObjectOutputStream; 56: import java.io.Serializable; 57: 58: import org.jfree.io.SerialUtilities; 59: import org.jfree.ui.RectangleInsets; 60: import org.jfree.util.ObjectUtilities; 61: import org.jfree.util.PaintUtilities; 62: 63: /** 64: * A line border for any {@link AbstractBlock}. 65: * 66: * @since 1.0.5 67: */ 68: public class LineBorder implements BlockFrame, Serializable { 69: 70: /** The line color. */ 71: private transient Paint paint; 72: 73: /** The line stroke. */ 74: private transient Stroke stroke; 75: 76: /** The insets. */ 77: private RectangleInsets insets; 78: 79: /** 80: * Creates a default border. 81: */ 82: public LineBorder() { 83: this(Color.black, new BasicStroke(1.0f), new RectangleInsets(1.0, 1.0, 84: 1.0, 1.0)); 85: } 86: 87: /** 88: * Creates a new border with the specified color. 89: * 90: * @param paint the color (<code>null</code> not permitted). 91: * @param stroke the border stroke (<code>null</code> not permitted). 92: * @param insets the insets (<code>null</code> not permitted). 93: */ 94: public LineBorder(Paint paint, Stroke stroke, RectangleInsets insets) { 95: if (paint == null) { 96: throw new IllegalArgumentException("Null 'paint' argument."); 97: } 98: if (stroke == null) { 99: throw new IllegalArgumentException("Null 'stroke' argument."); 100: } 101: if (insets == null) { 102: throw new IllegalArgumentException("Null 'insets' argument."); 103: } 104: this.paint = paint; 105: this.stroke = stroke; 106: this.insets = insets; 107: } 108: 109: /** 110: * Returns the paint. 111: * 112: * @return The paint (never <code>null</code>). 113: */ 114: public Paint getPaint() { 115: return this.paint; 116: } 117: 118: /** 119: * Returns the insets. 120: * 121: * @return The insets (never <code>null</code>). 122: */ 123: public RectangleInsets getInsets() { 124: return this.insets; 125: } 126: 127: /** 128: * Returns the stroke. 129: * 130: * @return The stroke (never <code>null</code>). 131: */ 132: public Stroke getStroke() { 133: return this.stroke; 134: } 135: 136: /** 137: * Draws the border by filling in the reserved space (in black). 138: * 139: * @param g2 the graphics device. 140: * @param area the area. 141: */ 142: public void draw(Graphics2D g2, Rectangle2D area) { 143: double w = area.getWidth(); 144: double h = area.getHeight(); 145: double t = this.insets.calculateTopInset(h); 146: double b = this.insets.calculateBottomInset(h); 147: double l = this.insets.calculateLeftInset(w); 148: double r = this.insets.calculateRightInset(w); 149: double x = area.getX(); 150: double y = area.getY(); 151: double x0 = x + l / 2.0; 152: double x1 = x + w - r / 2.0; 153: double y0 = y + h - b / 2.0; 154: double y1 = y + t / 2.0; 155: g2.setPaint(getPaint()); 156: g2.setStroke(getStroke()); 157: Line2D line = new Line2D.Double(); 158: if (t > 0.0) { 159: line.setLine(x0, y1, x1, y1); 160: g2.draw(line); 161: } 162: if (b > 0.0) { 163: line.setLine(x0, y0, x1, y0); 164: g2.draw(line); 165: } 166: if (l > 0.0) { 167: line.setLine(x0, y0, x0, y1); 168: g2.draw(line); 169: } 170: if (r > 0.0) { 171: line.setLine(x1, y0, x1, y1); 172: g2.draw(line); 173: } 174: } 175: 176: /** 177: * Tests this border for equality with an arbitrary instance. 178: * 179: * @param obj the object (<code>null</code> permitted). 180: * 181: * @return A boolean. 182: */ 183: public boolean equals(Object obj) { 184: if (obj == this) { 185: return true; 186: } 187: if (!(obj instanceof LineBorder)) { 188: return false; 189: } 190: LineBorder that = (LineBorder) obj; 191: if (!PaintUtilities.equal(this.paint, that.paint)) { 192: return false; 193: } 194: if (!ObjectUtilities.equal(this.stroke, that.stroke)){ 195: return false; 196: } 197: if (!this.insets.equals(that.insets)) { 198: return false; 199: } 200: return true; 201: } 202: 203: /** 204: * Provides serialization support. 205: * 206: * @param stream the output stream. 207: * 208: * @throws IOException if there is an I/O error. 209: */ 210: private void writeObject(ObjectOutputStream stream) throws IOException { 211: stream.defaultWriteObject(); 212: SerialUtilities.writePaint(this.paint, stream); 213: SerialUtilities.writeStroke(this.stroke, stream); 214: } 215: 216: /** 217: * Provides serialization support. 218: * 219: * @param stream the input stream. 220: * 221: * @throws IOException if there is an I/O error. 222: * @throws ClassNotFoundException if there is a classpath problem. 223: */ 224: private void readObject(ObjectInputStream stream) 225: throws IOException, ClassNotFoundException { 226: stream.defaultReadObject(); 227: this.paint = SerialUtilities.readPaint(stream); 228: this.stroke = SerialUtilities.readStroke(stream); 229: } 230: } 231: 232: