2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
37 * Copyright: Copyright (c) 2002 Mir-coders
38 * @author $Author: mh $
39 * @version $Id: WebdbImage.java,v 1.6.4.2 2002/11/01 05:38:20 mh Exp $
43 import java.util.Vector;
44 import java.util.Random;
45 import javax.media.jai.*;
46 import com.sun.media.jai.codec.*;
47 import java.awt.image.renderable.ParameterBlock;
49 public class WebdbImage
52 // default values for scaling
53 private int maxIconSize=120;
54 private int maxImageSize=640;
56 private int iconWidth;
57 private int iconHeight;
59 Random r = new Random();
61 // internal representation of the image
62 private PlanarImage planarImage;
69 // takes a temporary file as a parameter
70 public WebdbImage(File f, String type)
73 // It has to be a FileSeekableStream cause the image conversion
74 // needs to seek backwards.
75 planarImage = JAI.create("stream",new FileSeekableStream(f));
81 // must be run after scaleIcon()
82 public int getIconWidth() throws IOException {
86 // must be run after scaleIcon()
87 public int getIconHeight() throws IOException {
91 public int getImageWidth() {
92 return (int)planarImage.getWidth();
95 public int getImageHeight() {
96 return (int)planarImage.getHeight();
99 public void setImage(OutputStream outStream) {
100 JAI.create("encode", planarImage, outStream, _type, null);
103 public void setIcon(OutputStream outStream)
106 scaleIcon(outStream);
109 private void scaleImage()
110 throws java.io.IOException
112 if (maxImageSize>0 && ( getImageHeight()> maxImageSize|| getImageWidth() >maxImageSize))
115 ParameterBlockJAI params = new ParameterBlockJAI("scale");
116 params.addSource(planarImage);
117 if (getImageHeight() > getImageWidth())
118 scale = (float)maxImageSize / (float)getImageHeight();
120 scale = (float)maxImageSize / (float)getImageWidth();
122 params.setParameter("xScale", scale);
123 params.setParameter("yScale", scale);
124 params.setParameter("xTrans",0.0F);
125 params.setParameter("yTrans",0.0F);
126 params.setParameter("interpolation",new InterpolationBilinear());
127 planarImage = JAI.create("scale", params);
131 private void scaleIcon(OutputStream outStream)
132 throws java.io.IOException
135 ParameterBlockJAI params = new ParameterBlockJAI("scale");
136 params.addSource(planarImage);
137 if (getImageHeight() > getImageWidth())
138 scale = (float)maxIconSize / (float)getImageHeight();
140 scale = (float)maxIconSize / (float)getImageWidth();
142 params.setParameter("xScale", scale);
143 params.setParameter("yScale", scale);
144 params.setParameter("xTrans",0.0F);
145 params.setParameter("yTrans",0.0F);
146 params.setParameter("interpolation",new InterpolationBilinear());
147 PlanarImage temp = JAI.create("scale", params);
148 JAI.create("encode", temp, outStream, _type, null);
149 iconWidth=temp.getWidth();
150 iconHeight=temp.getHeight();