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1: /** 2: * ======================================== 3: * JFreeReport : a free Java report library 4: * ======================================== 5: * 6: * Project Info: http://reporting.pentaho.org/ 7: * 8: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * ------------ 26: * $Id: ImageUtils.java 2725 2007-04-01 18:49:29Z taqua $ 27: * ------------ 28: * (C) Copyright 2000-2005, by Object Refinery Limited. 29: * (C) Copyright 2005-2007, by Pentaho Corporation. 30: */ 31: 32: package org.jfree.report.util; 33: 34: import java.awt.image.BufferedImage; 35: import java.util.Arrays; 36: import javax.swing.Icon; 37: import javax.swing.ImageIcon; 38: 39: /** 40: * Provides utility methods for image creation and manipluation. 41: * 42: * @author Thomas Morgner 43: */ 44: public final class ImageUtils 45: { 46: /** 47: * DefaultConstructor. 48: */ 49: private ImageUtils () 50: { 51: } 52: 53: /** 54: * Creates a transparent image. These can be used for aligning menu items. 55: * 56: * @param width the width. 57: * @param height the height. 58: * @return the created transparent image. 59: */ 60: public static BufferedImage createTransparentImage (final int width, final int height) 61: { 62: final BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); 63: final int[] data = img.getRGB(0, 0, width, height, null, 0, width); 64: Arrays.fill(data, 0x00000000); 65: img.setRGB(0, 0, width, height, data, 0, width); 66: return img; 67: } 68: 69: /** 70: * Creates a transparent icon. The Icon can be used for aligning menu items. 71: * 72: * @param width the width of the new icon 73: * @param height the height of the new icon 74: * @return the created transparent icon. 75: */ 76: public static Icon createTransparentIcon (final int width, final int height) 77: { 78: return new ImageIcon(createTransparentImage(width, height)); 79: } 80: }