01: /**
02: * ========================================
03: * JFreeReport : a free Java report library
04: * ========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
09: *
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 3048 2007-07-28 18:02:42Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report.util;
31:
32: import java.awt.image.BufferedImage;
33: import java.util.Arrays;
34: import javax.swing.Icon;
35: import javax.swing.ImageIcon;
36:
37: /**
38: * Provides utility methods for image creation and manipluation.
39: *
40: * @author Thomas Morgner
41: */
42: public final class ImageUtils {
43: /**
44: * DefaultConstructor.
45: */
46: private ImageUtils() {
47: }
48:
49: /**
50: * Creates a transparent image. These can be used for aligning menu items.
51: *
52: * @param width the width.
53: * @param height the height.
54: * @return the created transparent image.
55: */
56: public static BufferedImage createTransparentImage(final int width,
57: final int height) {
58: final BufferedImage img = new BufferedImage(width, height,
59: BufferedImage.TYPE_INT_ARGB);
60: final int[] data = img.getRGB(0, 0, width, height, null, 0,
61: width);
62: Arrays.fill(data, 0x00000000);
63: img.setRGB(0, 0, width, height, data, 0, width);
64: return img;
65: }
66:
67: /**
68: * Creates a transparent icon. The Icon can be used for aligning menu items.
69: *
70: * @param width the width of the new icon
71: * @param height the height of the new icon
72: * @return the created transparent icon.
73: */
74: public static Icon createTransparentIcon(final int width,
75: final int height) {
76: return new ImageIcon(createTransparentImage(width, height));
77: }
78: }
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