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1
23
24 package org.infoglue.cms.util.graphics;
25
26 import java.awt.Color  ;
27 import java.awt.Graphics2D ;
28 import java.awt.Image ;
29 import java.awt.RenderingHints ;
30 import java.awt.image.BufferedImage ;
31 import java.io.BufferedReader ;
32 import java.io.File ;
33 import java.io.InputStreamReader ;
34
35 import org.apache.log4j.Logger;
36 import org.infoglue.cms.util.CmsPropertyHandler;
37
38 public class ThumbnailGenerator
39 {
40 private final static Logger logger = Logger.getLogger(ThumbnailGenerator.class.getName());
41
42 public ThumbnailGenerator()
43 {
44 }
45
46 private void execCmd(String command) throws Exception
47 {
48 logger.error(command);
49 String line;
50 Process p = Runtime.getRuntime().exec(command);
51 BufferedReader input = new BufferedReader (new InputStreamReader (p.getInputStream()));
52
53 while ((line = input.readLine()) != null)
54 {
55 logger.error(line);
56 }
57 input.close();
58 }
59
60 public void transform(String originalFile, String thumbnailFile, int thumbWidth, int thumbHeight, int quality) throws Exception
61 {
62 Image image = javax.imageio.ImageIO.read(new File (originalFile));
63
64 double thumbRatio = (double)thumbWidth / (double)thumbHeight;
65 int imageWidth = image.getWidth(null);
66 int imageHeight = image.getHeight(null);
67 double imageRatio = (double)imageWidth / (double)imageHeight;
68 if (thumbRatio < imageRatio)
69 {
70 thumbHeight = (int)(thumbWidth / imageRatio);
71 }
72 else
73 {
74 thumbWidth = (int)(thumbHeight * imageRatio);
75 }
76
77 if(imageWidth < thumbWidth && imageHeight < thumbHeight)
78 {
79 thumbWidth = imageWidth;
80 thumbHeight = imageHeight;
81 }
82 else if(imageWidth < thumbWidth)
83 thumbWidth = imageWidth;
84 else if(imageHeight < thumbHeight)
85 thumbHeight = imageHeight;
86
87 if(thumbWidth < 1)
88 thumbWidth = 1;
89 if(thumbHeight < 1)
90 thumbHeight = 1;
91
92 if(CmsPropertyHandler.getExternalThumbnailGeneration() != null && !CmsPropertyHandler.getExternalThumbnailGeneration().equalsIgnoreCase("") && !CmsPropertyHandler.getExternalThumbnailGeneration().equalsIgnoreCase("@externalThumbnailGeneration@"))
93 {
94 String [] args = new String [5];
95
96 args[0] = CmsPropertyHandler.getExternalThumbnailGeneration();
97 args[1] = "-resize";
98 args[2] = String.valueOf(thumbWidth) + "x" + String.valueOf(thumbHeight);
99 args[3] = originalFile;
100 args[4] = thumbnailFile;
101
102 try
103 {
104 Process p = Runtime.getRuntime().exec(args);
105 p.waitFor();
106 }
107 catch(InterruptedException e)
108 {
109 new Exception ("Error resizing image for thumbnail", e);
110 }
111 }
112 else
113 {
114 BufferedImage thumbImage = new BufferedImage (thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB);
115 Graphics2D graphics2D = thumbImage.createGraphics();
116 graphics2D.setBackground(Color.WHITE);
117 graphics2D.setPaint(Color.WHITE);
118 graphics2D.fillRect(0, 0, thumbWidth, thumbHeight);
119 graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
120 graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
121
122 javax.imageio.ImageIO.write(thumbImage, "JPG", new File (thumbnailFile));
123 }
124 }
125 }
126 |
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