01: /*
02: * ============================================================================
03: * GNU Lesser General Public License
04: * ============================================================================
05: *
06: * JasperReports - Free Java report-generating library.
07: * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
08: *
09: * This library is free software; you can redistribute it and/or
10: * modify it under the terms of the GNU Lesser General Public
11: * License as published by the Free Software Foundation; either
12: * 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,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17: * Lesser General Public 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22: *
23: * JasperSoft Corporation
24: * 303 Second Street, Suite 450 North
25: * San Francisco, CA 94107
26: * http://www.jaspersoft.com
27: */
28: package net.sf.jasperreports.engine.util;
29:
30: import java.awt.image.BufferedImage;
31: import java.io.ByteArrayOutputStream;
32: import java.io.IOException;
33:
34: import javax.imageio.ImageIO;
35:
36: import net.sf.jasperreports.engine.JRException;
37: import net.sf.jasperreports.engine.JRRenderable;
38:
39: /**
40: * @author Teodor Danciu (teodord@users.sourceforge.net)
41: * @version $Id: JRJdk14ImageEncoder.java 1664 2007-03-26 09:48:03Z lucianc $
42: */
43: public class JRJdk14ImageEncoder extends JRAbstractImageEncoder {
44:
45: /**
46: *
47: */
48: public byte[] encode(BufferedImage bi, byte imageType)
49: throws JRException {
50: String formatName = null;
51:
52: switch (imageType) {
53: case JRRenderable.IMAGE_TYPE_GIF: {
54: formatName = "gif";
55: break;
56: }
57: case JRRenderable.IMAGE_TYPE_PNG: {
58: formatName = "png";
59: break;
60: }
61: case JRRenderable.IMAGE_TYPE_TIFF: {
62: formatName = "tiff";
63: break;
64: }
65: case JRRenderable.IMAGE_TYPE_JPEG:
66: case JRRenderable.IMAGE_TYPE_UNKNOWN:
67: default: {
68: formatName = "jpeg";
69: break;
70: }
71: }
72:
73: boolean success = false;
74: ByteArrayOutputStream baos = new ByteArrayOutputStream();
75:
76: try {
77: success = ImageIO.write(bi, formatName, baos);
78: } catch (IOException e) {
79: throw new JRException(e);
80: }
81:
82: if (!success) {
83: throw new JRException(
84: "No appropriate image writer found for the \""
85: + formatName + "\" format.");
86: }
87:
88: return baos.toByteArray();
89: }
90:
91: }
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