svn commit: r907852 - /pdfbox/trunk/src/main/java/org/apache/pdfbox/pdmodel/interactive/documentnavigation/destination/PDPageDestination.java

[ju...@apache.org]

Author: jukka
Date: Tue Feb  9 00:14:28 2010
New Revision: 907852

URL: http://svn.apache.org/viewvc?rev=907852&view=rev
Log:
PDFBOX-558: PDPageDestination getPageNumber only returns page number when underlying COSArray has a page number

Add a PDPageDestionation.findPageNumber() to complement the existing getPageNumber() method. Based on the patch contributed by Wulf Berschin.

Modified:
    pdfbox/trunk/src/main/java/org/apache/pdfbox/pdmodel/interactive/documentnavigation/destination/PDPageDestination.java

Modified: pdfbox/trunk/src/main/java/org/apache/pdfbox/pdmodel/interactive/documentnavigation/destination/PDPageDestination.java
URL: http://svn.apache.org/viewvc/pdfbox/trunk/src/main/java/org/apache/pdfbox/pdmodel/interactive/documentnavigation/destination/PDPageDestination.java?rev=907852&r1=907851&r2=907852&view=diff
==============================================================================
--- pdfbox/trunk/src/main/java/org/apache/pdfbox/pdmodel/interactive/documentnavigation/destination/PDPageDestination.java (original)
+++ pdfbox/trunk/src/main/java/org/apache/pdfbox/pdmodel/interactive/documentnavigation/destination/PDPageDestination.java Tue Feb  9 00:14:28 2010
@@ -16,12 +16,16 @@
  */
 package org.apache.pdfbox.pdmodel.interactive.documentnavigation.destination;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import org.apache.pdfbox.cos.COSArray;
 import org.apache.pdfbox.cos.COSBase;
 import org.apache.pdfbox.cos.COSDictionary;
 import org.apache.pdfbox.cos.COSNumber;
 
 import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageNode;
 
 /**
  * This represents a destination to a page, see subclasses for specific parameters.
@@ -110,6 +114,39 @@
     }
 
     /**
+     * Returns the page number for this destination, regardless of whether
+     * this is a page number or a reference to a page.
+     *
+     * @since Apache PDFBox 1.0.0
+     * @see PDOutlineItem
+     * @return page number, or -1 if the destination type is unknown
+     */
+    public int findPageNumber() {
+        int retval = -1;
+        if( array.size() > 0 )
+        {
+            COSBase page = array.getObject( 0 );
+            if( page instanceof COSNumber )
+            {
+                retval = ((COSNumber)page).intValue();
+            }
+            else if (page instanceof COSDictionary)
+            {
+                COSBase parent = page;
+                while (((COSDictionary) parent).getDictionaryObject("Parent", "P") != null) {
+                    parent = ((COSDictionary) parent).getDictionaryObject( "Parent", "P" );
+                }
+                // now parent is the pages node
+                PDPageNode pages = new PDPageNode((COSDictionary) parent);
+                List<PDPage> allPages = new ArrayList<PDPage>();
+                pages.getAllKids(allPages);
+                retval = allPages.indexOf(new PDPage((COSDictionary) page)) + 1;
+            }
+        }
+        return retval;
+    }
+
+    /**
      * Set the page number for this destination.
      *
      * @param pageNumber The page for the destination.