Support for QR Placeholders in PAdES

3 files changed, 66 insertions, 3 deletions

diff --git a/stamper/stmp-itext/src/main/java/at/gv/egiz/pdfas/stmp/itext/ITextStamper.java b/stamper/stmp-itext/src/main/java/at/gv/egiz/pdfas/stmp/itext/ITextStamper.java
index ff68dcd8..b0801a9c 100644
--- a/stamper/stmp-itext/src/main/java/at/gv/egiz/pdfas/stmp/itext/ITextStamper.java
+++ b/stamper/stmp-itext/src/main/java/at/gv/egiz/pdfas/stmp/itext/ITextStamper.java
@@ -2,6 +2,7 @@ package at.gv.egiz.pdfas.stmp.itext;
 
 import at.gv.egiz.pdfas.common.exceptions.PdfAsException;
 import at.gv.egiz.pdfas.common.settings.ISettings;
+import at.gv.egiz.pdfas.lib.impl.placeholder.SignaturePlaceholderData;
 import at.gv.egiz.pdfas.lib.impl.stamping.IPDFStamper;
 import at.gv.egiz.pdfas.lib.impl.stamping.IPDFVisualObject;
 import at.gv.egiz.pdfas.lib.impl.status.PDFObject;
@@ -444,7 +445,7 @@ public class ITextStamper implements IPDFStamper {
     }
 
     public byte[] writeVisualObject(IPDFVisualObject visualObject, PositioningInstruction positioningInstruction,
-                                    byte[] pdfData) throws PdfAsException {
+                                    byte[] pdfData, String placeholderName) throws PdfAsException {
         try {
 
             ITextVisualObject object = null;
@@ -479,14 +480,21 @@ public class ITextStamper implements IPDFStamper {
                 throw new PdfAsException("The provided page (=" +
                         positioningInstruction.getPage() + ") is out of range.");
             }
-
+            
+            if(placeholderName != null) {
+            	ITextStamperAccess.replacePlaceholder(stamper, targetPage, placeholderName);
+            }
+            
             PdfContentByte content = stamper.getOverContent(targetPage);
 
             PdfPTable table = object.getTable();
 
+            logger.info("Visual Object: " + visualObject.getWidth() + " x " + visualObject.getHeight());
+            //PdfTemplate table_template = content.createTemplate(visualObject.getWidth(), visualObject.getHeight());
+            
             table.writeSelectedRows(0, -1, positioningInstruction.getX(),
                     positioningInstruction.getY(), content);
-
+            
             stamper.close();
 
             baos.close();
diff --git a/stamper/stmp-itext/src/main/java/com/lowagie/text/pdf/ITextStamperAccess.java b/stamper/stmp-itext/src/main/java/com/lowagie/text/pdf/ITextStamperAccess.java
new file mode 100644
index 00000000..65b4ba77
--- /dev/null
+++ b/stamper/stmp-itext/src/main/java/com/lowagie/text/pdf/ITextStamperAccess.java
@@ -0,0 +1,47 @@
+package com.lowagie.text.pdf;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.pdfas.common.exceptions.PdfAsException;
+import at.gv.egiz.pdfas.stmp.itext.ITextStamper;
+
+import com.lowagie.text.BadElementException;
+import com.lowagie.text.Image;
+
+public class ITextStamperAccess {
+
+	private static final Logger logger = LoggerFactory.getLogger(ITextStamperAccess.class);
+	
+	public static void replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) 
+    		throws BadElementException, MalformedURLException, IOException, 
+    		BadPdfFormatException, PdfAsException {
+        Image img = Image.getInstance(ITextStamper.class.getResource("/placeholder/empty.jpg"));
+        PdfImage pImg = new PdfImage(img, "Imwurscht", null);
+        PdfStamperImp stamperImp = (PdfStamperImp)stamper.getWriter();
+        PdfIndirectObject ind = stamperImp.addToBody(pImg);
+
+        PdfDictionary resources = stamper.getReader().getPageN(pageNr).getAsDict(PdfName.RESOURCES);
+        if (ind != null && resources != null)
+        {
+           PdfDictionary xobjDict = resources.getAsDict(PdfName.XOBJECT);
+           if (xobjDict != null)
+           {
+              xobjDict.put(new PdfName(placeholderName), ind.getIndirectReference());
+              stamperImp.markUsed(resources);
+           }
+           else
+           {
+              throw new PdfAsException("failed to write PDF", new NullPointerException("Image dictionary not found in document structure!"));
+           }
+        }
+        else
+        {
+           throw new PdfAsException("failed to write PDF", new NullPointerException("Resource dictionary not found in document structure!"));
+        }
+     }
+	
+}
diff --git a/stamper/stmp-itext/src/main/java/com/lowagie/text/pdf/package-info.java b/stamper/stmp-itext/src/main/java/com/lowagie/text/pdf/package-info.java
new file mode 100644
index 00000000..131f9340
--- /dev/null
+++ b/stamper/stmp-itext/src/main/java/com/lowagie/text/pdf/package-info.java
@@ -0,0 +1,8 @@
+/**
+ * 
+ */
+/**
+ * @author afitzek
+ *
+ */
+package com.lowagie.text.pdf;
\ No newline at end of file