soon this will be a producers.xml pluggable node that will

allow one to take content data and use java to do page layout/typography
calculations so that one can actually make a useful pdf using mir.

right now it is just a (working) skeleton that needs to be filled in
with some math, and generalized a bit

diff --git a/source/mircoders/producer/PDFPreFormattingProducerNode.java b/source/mircoders/producer/PDFPreFormattingProducerNode.java
new file mode 100755 (executable)
index 0000000..cac9345
--- /dev/null
+++ b/source/mircoders/producer/PDFPreFormattingProducerNode.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2001, 2002  The Mir-coders group
+ *
+ * This file is part of Mir.
+ *
+ * Mir is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Mir is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Mir; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * In addition, as a special exception, The Mir-coders gives permission to link
+ * the code of this program with the com.oreilly.servlet library, any library
+ * licensed under the Apache Software License, The Sun (tm) Java Advanced
+ * Imaging library (JAI), The Sun JIMI library (or with modified versions of
+ * the above that use the same license as the above), and distribute linked
+ * combinations including the two.  You must obey the GNU General Public
+ * License in all respects for all of the code used other than the above
+ * mentioned libraries.  If you modify this file, you may extend this exception
+ * to your version of the file, but you are not obligated to do so.  If you do
+ * not wish to do so, delete this exception statement from your version.
+ */
+
+package mircoders.producer;
+
+import java.util.*;
+import java.io.*;
+import mir.util.*;
+import mir.producer.*;
+import mir.entity.*;
+import mir.entity.adapter.*;
+import mircoders.entity.*;
+
+//because images are returned as a template model!
+import freemarker.template.*;
+
+
+public class PDFPreFormattingProducerNode implements ProducerNode {
+  private String contentKey;
+
+  public PDFPreFormattingProducerNode(String aContentKey) {
+    contentKey = aContentKey;
+  }
+
+  public void produce(Map aValueMap, String aVerb, PrintWriter aLogger) throws ProducerFailure {
+    Object data;
+    Entity entity;
+
+    try {
+      data = ParameterExpander.findValueForKey( aValueMap, contentKey );
+
+      if (! (data instanceof EntityAdapter)) {
+        throw new ProducerFailure("ContentMarkingProducerNode: value of '"+contentKey+"' is not an EntityAdapter, but an " + data.getClass().getName(), null);
+      }
+
+      entity = ((EntityAdapter) data).getEntity();
+      if (! (entity instanceof EntityContent)) {
+        throw new ProducerFailure("ContentMarkingProducerNode: value of '"+contentKey+"' is not a content EntityAdapter, but a " + entity.getClass().getName() + " adapter", null);
+      }
+
+      int numLinesBetweenImages = 3;
+      float characterWidthCM = 0.17F;
+      float contentAreaWidthCM = 16;
+      float pixelWidthCM = .03F;
+      float lineHeightCM = .5F;
+      
+      int numCharsInAnImagelessRow = (new Float(numLinesBetweenImages * (contentAreaWidthCM/characterWidthCM))).intValue();
+         
+
+      //yikes!  a templatemodel....why is freemarker in the backend?
+      TemplateModel images=entity.get("to_media_images");
+      if (images != null){
+         HashMap row = new HashMap();
+         row.put("text",((EntityContent) entity).getValue("content_data").substring(0,numCharsInAnImagelessRow));
+      }
+
+      ArrayList brokenUpContent = new ArrayList();
+      
+
+      brokenUpContent.add("hello");
+      brokenUpContent.add("goodbye");
+      
+      ParameterExpander.setValueForKey(
+                                      aValueMap,
+                                      "data.formatted_content",
+                                      new CachingRewindableIterator(brokenUpContent.iterator())
+                                      );
+      //      aValueMap.put("test_content",((EntityContent) entity).getValue("content_data"));
+
+    }
+    catch (Throwable t) {
+      aLogger.println("Error while formatting content for PDF: " + t.getMessage());
+      t.printStackTrace(aLogger);
+
+      throw new ProducerFailure(t.getMessage(), t);
+    }
+  }
+
+  public Set buildVerbSet() {
+    return new HashSet();
+  }
+}
+
+