Addes Linking to a specific page and a named destinations of an

external PDF file (see www.adobe.com/products/acrobat/pdfs/c01acrotip.pdf)
Submitted by: Bernd Brandstetter <bbrand@freenet.de>


git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@195332 13f79535-47bb-0310-9956-ffa450edef68

2 files changed, 61 insertions, 3 deletions

diff --git a/src/org/apache/fop/pdf/PDFDocument.java b/src/org/apache/fop/pdf/PDFDocument.java
index e483b6791..8dd9c0c86 100644
--- a/src/org/apache/fop/pdf/PDFDocument.java
+++ b/src/org/apache/fop/pdf/PDFDocument.java
@@ -1233,6 +1233,7 @@ public class PDFDocument {
 
         PDFLink linkObject;
         PDFAction action;
+        int index;
 
         PDFLink link = new PDFLink(++this.objectcount, rect);
         this.objects.add(link);
@@ -1246,6 +1247,22 @@ public class PDFDocument {
                 action = new PDFGoToRemote(++this.objectcount, fileSpec);
                 this.objects.add(action);
                 link.setAction(action);
+            } else if ((index = destination.indexOf(".pdf#page=")) > 0) {
+                String file = destination.substring(0, index + 4);
+                int page = Integer.parseInt(destination.substring(index + 10));
+                PDFFileSpec fileSpec = new PDFFileSpec(++this.objectcount, file);
+                this.objects.add(fileSpec);
+                action = new PDFGoToRemote(++this.objectcount, fileSpec, page);
+                this.objects.add(action);
+                link.setAction(action);
+            } else if ((index = destination.indexOf(".pdf#dest=")) > 0) {
+                String file = destination.substring(0, index + 4);
+                String dest = destination.substring(index + 10);
+                PDFFileSpec fileSpec = new PDFFileSpec(++this.objectcount, file);
+                this.objects.add(fileSpec);
+                action = new PDFGoToRemote(++this.objectcount, fileSpec, dest);
+                this.objects.add(action);
+                link.setAction(action);
             } else {                               // URI
                 PDFUri uri = new PDFUri(destination);
                 link.setAction(uri);
diff --git a/src/org/apache/fop/pdf/PDFGoToRemote.java b/src/org/apache/fop/pdf/PDFGoToRemote.java
index aa8ef5afa..ad102034c 100644
--- a/src/org/apache/fop/pdf/PDFGoToRemote.java
+++ b/src/org/apache/fop/pdf/PDFGoToRemote.java
@@ -16,6 +16,8 @@ public class PDFGoToRemote extends PDFAction {
      * the file specification
      */
     protected PDFFileSpec pdfFileSpec;
+    protected int pageReference = 0;
+    protected String destination = null;
 
     /**
      * create an GoToR object.
@@ -32,6 +34,38 @@ public class PDFGoToRemote extends PDFAction {
     }
 
     /**
+     * create an GoToR object.
+     *
+     * @param number the object's number
+     * @param fileSpec the fileSpec associated with the action
+     * @param page a page reference within the remote document
+     */
+    public PDFGoToRemote(int number, PDFFileSpec pdfFileSpec, int page) {
+
+        /* generic creation of object */
+        super(number);
+
+        this.pdfFileSpec = pdfFileSpec;
+        this.pageReference = page;
+    }
+
+    /**
+     * create an GoToR object.
+     *
+     * @param number the object's number
+     * @param fileSpec the fileSpec associated with the action
+     * @param dest a named destination within the remote document
+     */
+    public PDFGoToRemote(int number, PDFFileSpec pdfFileSpec, String dest) {
+
+        /* generic creation of object */
+        super(number);
+
+        this.pdfFileSpec = pdfFileSpec;
+        this.destination = dest;
+    }
+
+    /**
      * return the action string which will reference this object
      *
      * @return the action String
@@ -48,9 +82,16 @@ public class PDFGoToRemote extends PDFAction {
     public byte[] toPDF() {
         String p = new String(this.number + " " + this.generation + " obj\n"
                               + "<<\n/S /GoToR\n" + "/F "
-                              + pdfFileSpec.referencePDF() + "\n"
-                              + "/D [ 0 /XYZ null null null ]"
-                              + " \n>>\nendobj\n");
+                              + pdfFileSpec.referencePDF() + "\n");
+
+        if (destination != null) {
+            p += "/D (" + this.destination + ")";
+        } else {
+            p += "/D [ " + this.pageReference + " /XYZ null null null ]";
+        }
+
+        p += " \n>>\nendobj\n";
+
         return p.getBytes();
     }