1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements.  See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License.  You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 /* $Id: ImageWriterExample2.java 750418 2009-03-05 11:03:54Z vhennebert $ */
19 
20 package image.writer;
21 
22 import java.awt.Color;
23 import java.awt.Graphics2D;
24 import java.awt.image.BufferedImage;
25 import java.io.File;
26 import java.io.IOException;
27 import java.io.OutputStream;
28 
29 import org.apache.commons.io.IOUtils;
30 import org.apache.xmlgraphics.image.writer.ImageWriter;
31 import org.apache.xmlgraphics.image.writer.ImageWriterParams;
32 import org.apache.xmlgraphics.image.writer.ImageWriterRegistry;
33 import org.apache.xmlgraphics.image.writer.MultiImageWriter;
34 
35 public class ImageWriterExample2 extends ImageWriterExample1 {
36 
createAnImage(String compression, int pageNum)37     private BufferedImage createAnImage(String compression, int pageNum) {
38         boolean monochrome = compression.startsWith("CCITT"); //CCITT is for 1bit b/w only
39 
40         BufferedImage bimg;
41         if (monochrome) {
42             bimg = new BufferedImage(400, 200, BufferedImage.TYPE_BYTE_BINARY);
43         } else {
44             bimg = new BufferedImage(400, 200, BufferedImage.TYPE_INT_RGB);
45         }
46 
47         Graphics2D g2d = bimg.createGraphics();
48         g2d.setBackground(Color.white);
49         g2d.clearRect(0, 0, 400, 200);
50         g2d.setColor(Color.black);
51 
52         //Paint something
53         paintSome(g2d, pageNum);
54 
55         return bimg;
56     }
57 
58     /**
59      * Creates a bitmap file. We paint a few things on a bitmap and then save the bitmap using
60      * an ImageWriter.
61      * @param outputFile the target file
62      * @param format the target format (a MIME type, ex. "image/png")
63      * @throws IOException In case of an I/O error
64      */
generateBitmapUsingJava2D(File outputFile, String format)65     public void generateBitmapUsingJava2D(File outputFile, String format)
66                 throws IOException {
67         //String compression = "CCITT T.6";
68         String compression = "PackBits";
69 
70         OutputStream out = new java.io.FileOutputStream(outputFile);
71         out = new java.io.BufferedOutputStream(out);
72         try {
73 
74             ImageWriter writer = ImageWriterRegistry.getInstance().getWriterFor(format);
75             ImageWriterParams params = new ImageWriterParams();
76             params.setCompressionMethod(compression);
77             params.setResolution(72);
78 
79             if (writer.supportsMultiImageWriter()) {
80                 MultiImageWriter multiWriter = writer.createMultiImageWriter(out);
81                 multiWriter.writeImage(createAnImage(compression, 1), params);
82                 multiWriter.writeImage(createAnImage(compression, 2), params);
83                 multiWriter.close();
84             } else {
85                 throw new UnsupportedOperationException("multi-page images not supported for "
86                         + format);
87             }
88 
89         } finally {
90             IOUtils.closeQuietly(out);
91         }
92     }
93 
94     /**
95      * Command-line interface
96      * @param args command-line arguments
97      */
main(String[] args)98     public static void main(String[] args) {
99         try {
100             File targetDir;
101             if (args.length >= 1) {
102                 targetDir = new File(args[0]);
103             } else {
104                 targetDir = new File(".");
105             }
106             if (!targetDir.exists()) {
107                 System.err.println("Target Directory does not exist: " + targetDir);
108             }
109             File outputFile = new File(targetDir, "eps-example2.tif");
110             ImageWriterExample2 app = new ImageWriterExample2();
111             app.generateBitmapUsingJava2D(outputFile, "image/tiff");
112             System.out.println("File written: " + outputFile.getCanonicalPath());
113         } catch (Exception e) {
114             e.printStackTrace();
115         }
116     }
117 
118 }
119