001 /*
002 * $Id: ShapeUtils.java 3100 2008-10-14 22:33:10Z rah003 $
003 *
004 * Copyright 2006 Sun Microsystems, Inc., 4150 Network Circle,
005 * Santa Clara, California 95054, U.S.A. All rights reserved.
006 *
007 * This library is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * This library is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015 * Lesser General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
020 */
021 package org.jdesktop.swingx.util;
022
023 import java.awt.Font;
024 import java.awt.Graphics2D;
025 import java.awt.Polygon;
026 import java.awt.Shape;
027 import java.awt.font.GlyphVector;
028 import java.awt.geom.AffineTransform;
029 import java.awt.geom.Ellipse2D;
030 import java.awt.geom.GeneralPath;
031 import java.awt.geom.Point2D;
032 import java.awt.geom.Rectangle2D;
033 import java.awt.image.BufferedImage;
034
035 /**
036 *
037 * @author joshy
038 */
039 public final class ShapeUtils {
040
041 /** Creates a new instance of ShapeUtils */
042 private ShapeUtils() { }
043
044 public static Shape generatePolygon(int sides, int outsideRadius, boolean normalize) {
045 return generatePolygon(sides, outsideRadius, 0, normalize);
046 }
047
048 public static Shape generatePolygon(int sides, int outsideRadius, int insideRadius, boolean normalize) {
049 Shape shape = generatePolygon(sides,outsideRadius,insideRadius);
050 if(normalize) {
051 Rectangle2D bounds = shape.getBounds2D();
052 GeneralPath path = new GeneralPath(shape);
053 shape = path.createTransformedShape(
054 AffineTransform.getTranslateInstance(-bounds.getX(), -bounds.getY()));
055 }
056 return shape;
057 }
058
059
060 public static Shape generatePolygon(int sides, int outsideRadius, int insideRadius) {
061
062 if(sides < 3) {
063 return new Ellipse2D.Float(0,0,10,10);
064 }
065
066 AffineTransform trans = new AffineTransform();
067 Polygon poly = new Polygon();
068 for(int i=0; i<sides; i++) {
069 trans.rotate(Math.PI*2/(float)sides/2);
070 Point2D out = trans.transform(new Point2D.Float(0,outsideRadius),null);
071 poly.addPoint((int)out.getX(), (int)out.getY());
072 trans.rotate(Math.PI*2/(float)sides/2);
073 if(insideRadius > 0) {
074 Point2D in = trans.transform(new Point2D.Float(0,insideRadius),null);
075 poly.addPoint((int)in.getX(), (int)in.getY());
076 }
077 }
078
079 return poly;
080 }
081
082 public static Shape generateShapeFromText(Font font, char ch) {
083 return generateShapeFromText(font, String.valueOf(ch));
084 }
085
086 public static Shape generateShapeFromText(Font font, String string) {
087 BufferedImage img = new BufferedImage(100,100,BufferedImage.TYPE_INT_ARGB);
088 Graphics2D g2 = img.createGraphics();
089
090 try {
091 GlyphVector vect = font.createGlyphVector(g2.getFontRenderContext(), string);
092 Shape shape = vect.getOutline(0f,(float)-vect.getVisualBounds().getY());
093
094 return shape;
095 } finally {
096 g2.dispose();
097 }
098 }
099 }