Initital check-in of the JimiGenerator

2004-06-17 09:37:42 +00:00 · 2004-06-17 09:37:42 +00:00 · 40861948b9
commit 40861948b9
parent c8331a38e2
1 changed files with 90 additions and 0 deletions
--- a/src/helma/image/jimi/JimiGenerator.java
+++ b/src/helma/image/jimi/JimiGenerator.java
@ -0,0 +1,90 @@
+/*
+ /*
+ * Helma License Notice
+ *
+ * The contents of this file are subject to the Helma License
+ * Version 2.0 (the "License"). You may not use this file except in
+ * compliance with the License. A copy of the License is available at
+ * http://adele.helma.org/download/helma/license.txt
+ *
+ * Copyright 1998-2003 Helma Software. All Rights Reserved.
+ *
+ * $RCSfile$
+ * $Author$
+ * $Revision$
+ * $Date$
+ */
+
+package helma.image.jimi;
+
+import helma.image.*;
+
+import java.io.*;
+
+import com.sun.jimi.core.*;
+import com.sun.jimi.core.encoder.jpg.JPGEncoder;
+import com.sun.jimi.core.encoder.png.PNGEncoder;
+import com.sun.jimi.core.options.JPGOptions;
+import com.sun.jimi.core.options.PNGOptions;
+
+public class JimiGenerator extends ImageGenerator {
+    /**
+     * Saves the image. Image format is deduced from filename.
+     *
+     * @param filename ...
+     * @param quality ...
+     * @param alpha ...
+     * @throws IOException
+     * @see helma.image.ImageGenerator#saveAs(helma.image.ImageWrapper, java.lang.String, float, boolean)
+     */
+    public void write(ImageWrapper wrapper, String filename, float quality, boolean alpha) throws IOException {
+        try {
+            String lowerCaseName = filename.toLowerCase();
+            if (lowerCaseName.endsWith(".gif")) {
+                // sun's jimi package doesn't encode gifs, use helma's encoder instead
+                DataOutputStream out = new DataOutputStream(
+                    new FileOutputStream(filename));
+                GIFEncoder encoder = new GIFEncoder();
+                encoder.encode(wrapper.getBufferedImage(), out);
+                out.close();
+            } else {
+                // let's not rely on Jimi's file-extension detecting mechanisms,
+                // as these do not seem to specify file type depending options
+                // afterwars. Instead, the file ending is checked here:
+
+                JimiImage source = Jimi.createRasterImage(wrapper.getSource());
+                JimiEncoder encoder = null;
+                if (lowerCaseName.endsWith(".jpg")
+                    || lowerCaseName.endsWith(".jpeg")) {
+                    // JPEG
+                    encoder = new JPGEncoder();
+                    // the quality value does mean something here and can be specified:
+                    if (quality >= 0.0 && quality <= 1.0) {
+                        JPGOptions options = new JPGOptions();
+                        options.setQuality((int) Math.round(quality * 100));
+                        source.setOptions(options);
+                    }
+                } else if (lowerCaseName.endsWith(".png")) {
+                    // PNG
+                    encoder = new PNGEncoder();
+                    // the alpha parameter does mean something here:
+                    ((PNGEncoder) encoder).setAlpha(new Boolean(alpha));
+                    PNGOptions options = new PNGOptions();
+                    // TODO: Use quality for CompressionType control, similar to ImageIOWrapper (?)
+                    options.setCompressionType(PNGOptions.COMPRESSION_MAX);
+                    source.setOptions(options);
+                }
+                if (encoder != null) {
+                    FileOutputStream out = new FileOutputStream(filename);
+                    encoder.encodeImages(new JimiImageEnumeration(source), out);
+                    out.close();
+                } else { // if nothing worked, fall back to the Jimi mechanisms and see wether something comes out
+                    Jimi.putImage(wrapper.getImage(), filename);
+                }
+            }
+        } catch (JimiException e) {
+            throw new IOException(e.getMessage());
+        }
+    }
+
+}