Support for QR Placeholders in PAdES

2 files changed, 55 insertions, 0 deletions

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