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1 package info.magnolia.module.admininterface.pages;
2
3 import info.magnolia.cms.beans.config.ContentRepository;
4 import info.magnolia.cms.core.HierarchyManager;
5 import info.magnolia.cms.core.NodeData;
6 import info.magnolia.context.MgnlContext;
7 import info.magnolia.module.admininterface.PageMVCHandler;
8
9 import java.awt.Graphics2D  ;
10 import java.awt.Image ;
11 import java.awt.image.BufferedImage ;
12 import java.io.BufferedOutputStream ;
13 import java.io.IOException ;
14 import java.io.InputStream ;
15
16 import javax.imageio.ImageIO ;
17 import javax.servlet.ServletOutputStream ;
18 import javax.servlet.http.HttpServletRequest ;
19 import javax.servlet.http.HttpServletResponse ;
20
21 import org.slf4j.Logger;
22 import org.slf4j.LoggerFactory;
23
24 import com.sun.image.codec.jpeg.JPEGCodec;
25 import com.sun.image.codec.jpeg.JPEGEncodeParam;
26 import com.sun.image.codec.jpeg.JPEGImageEncoder;
27
28
29
33 public class FileThumbnailDialogPage extends PageMVCHandler {
34
35
38 private static final long serialVersionUID = 222L;
39
40
43 private static Logger log = LoggerFactory.getLogger(FileThumbnailDialogPage.class);
44
45 private String src;
46
47 private String size;
48
49
54 public FileThumbnailDialogPage(String name, HttpServletRequest request, HttpServletResponse response) {
55 super(name, request, response);
56 }
57
58
62 public void setSize(String size) {
63 this.size = size;
64 }
65
66
70 public void setSrc(String src) {
71 this.src = src;
72 }
73
74
77 public void renderHtml(String view) throws IOException {
78
79 if (src == null) {
80 return;
81 }
82
83 response.setContentType("image/jpeg");
85 HierarchyManager hm = MgnlContext.getHierarchyManager(ContentRepository.WEBSITE);
86
87 InputStream in = null;
88
89 NodeData data;
90 try {
91 data = hm.getNodeData(src);
92 in = data.getValue().getStream();
93 }
94 catch (Exception e) {
95 log.error(e.getMessage(), e);
96 return;
97 }
98
99 Image image = ImageIO.read(in);
100
101 int thumbHeight;
102 int thumbWidth;
103 if (size != null) {
104 thumbHeight = image.getHeight(null);
105 thumbWidth = image.getWidth(null);
106 }
107 else {
108 thumbWidth = 150;
109 int w = image.getWidth(null);
110 int h = image.getHeight(null);
111 if (w == 0) {
112 w = 1;
113 }
114 if (h == 0) {
115 h = 1;
116 }
117
118 if (w > thumbWidth) {
119 thumbHeight = thumbWidth * h / w;
120 }
121 else {
122 thumbWidth = w;
123 thumbHeight = h;
124 }
125
126 if (thumbHeight > 120) {
127 thumbHeight = 100;
128 thumbWidth = thumbHeight * w / h;
129 }
130
131 }
132
133 BufferedImage thumbImage = new BufferedImage (thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB);
135 Graphics2D graphics2D = thumbImage.createGraphics();
136 graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
138
139 ServletOutputStream sout = response.getOutputStream();
140 BufferedOutputStream output = new BufferedOutputStream (sout);
141 JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(output);
142 JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);
143 param.setQuality(0.8f, false);
144
145 encoder.setJPEGEncodeParam(param);
146 encoder.encode(thumbImage);
147 }
148
149 }
150 |
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