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1
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
44 public class JRJdk14ImageEncoder extends JRAbstractImageEncoder
45 {
46
47
48
51 public byte[] encode(BufferedImage bi, byte imageType) throws JRException
52 {
53 String formatName = null;
54
55 switch (imageType)
56 {
57 case JRRenderable.IMAGE_TYPE_GIF :
58 {
59 formatName = "gif";
60 break;
61 }
62 case JRRenderable.IMAGE_TYPE_PNG :
63 {
64 formatName = "png";
65 break;
66 }
67 case JRRenderable.IMAGE_TYPE_TIFF :
68 {
69 formatName = "tiff";
70 break;
71 }
72 case JRRenderable.IMAGE_TYPE_JPEG :
73 case JRRenderable.IMAGE_TYPE_UNKNOWN :
74 default:
75 {
76 formatName = "jpeg";
77 break;
78 }
79 }
80
81 boolean success = false;
82 ByteArrayOutputStream baos = new ByteArrayOutputStream ();
83
84 try
85 {
86 success = ImageIO.write(bi, formatName, baos);
87 }
88 catch (IOException e)
89 {
90 throw new JRException(e);
91 }
92
93 if (!success)
94 {
95 throw new JRException("No appropriate image writer found for the \"" + formatName + "\" format.");
96 }
97
98 return baos.toByteArray();
99 }
100
101
102 }
103 |
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