From 06b900642342afb680aab3b36fba9247e1e29aa9 Mon Sep 17 00:00:00 2001
From: pdanner <pdanner@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 26 Nov 2010 12:02:47 +0000
Subject: Placeholder-image handling

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@613 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../wag/egov/egiz/pdf/BinarySignature.java         | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'src/main/java/at/knowcenter/wag/egov/egiz/pdf')

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
index 4a80553..c34ee68 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
@@ -21,6 +21,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.security.cert.CertificateEncodingException;
@@ -42,6 +43,8 @@ import at.gv.egiz.pdfas.exceptions.pdf.KZSettingNotFoundException;
 import at.gv.egiz.pdfas.framework.input.PdfDataSource;
 import at.gv.egiz.pdfas.framework.output.DataSink;
 import at.gv.egiz.pdfas.framework.signator.SignatorInformation;
+import at.gv.egiz.pdfas.placeholder.SignaturePlaceholderContext;
+import at.gv.egiz.pdfas.placeholder.SignaturePlaceholderData;
 import at.gv.egiz.pdfas.utils.PDFASUtils;
 import at.knowcenter.wag.egov.egiz.cfg.SettingsReader;
 import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
@@ -56,13 +59,17 @@ import at.knowcenter.wag.egov.egiz.sig.SignatureTypes;
 import at.knowcenter.wag.egov.egiz.tools.CodingHelper;
 import at.knowcenter.wag.exactparser.ByteArrayUtils;
 
+import com.lowagie.text.BadElementException;
 import com.lowagie.text.Document;
 import com.lowagie.text.DocumentException;
+import com.lowagie.text.Image;
 import com.lowagie.text.Rectangle;
+import com.lowagie.text.pdf.BadPdfFormatException;
 import com.lowagie.text.pdf.PRStream;
 import com.lowagie.text.pdf.PdfArray;
 import com.lowagie.text.pdf.PdfContentByte;
 import com.lowagie.text.pdf.PdfDictionary;
+import com.lowagie.text.pdf.PdfImage;
 import com.lowagie.text.pdf.PdfIndirectObject;
 import com.lowagie.text.pdf.PdfIndirectReference;
 import com.lowagie.text.pdf.PdfName;
@@ -87,6 +94,8 @@ import com.lowagie.text.pdf.PdfTemplate;
  */
 public abstract class BinarySignature
 {
+//23.11.2010 changed by exthex - added replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) method
+  
   protected static Log logger = LogFactory.getLog(BinarySignature.class);
   /**
    * The tolerance area of the line break algorithm.
@@ -826,6 +835,13 @@ public abstract class BinarySignature
       {
         throw new PDFDocumentException(224, "The provided page (=" + pi.getPage() + ") is out of range.");
       }
+      
+      if (SignaturePlaceholderContext.isSignaturePlaceholderDataSet() &&
+            SignaturePlaceholderContext.getSignaturePlaceholderData().getPlaceholderName() != null)
+      {
+         replacePlaceholder(stamper, pi.getPage(), SignaturePlaceholderContext.getSignaturePlaceholderData().getPlaceholderName());
+      }
+      
       PdfContentByte content = stamper.getOverContent(pi.getPage());
       // content = StampContent einer PageStamp.
 
@@ -940,6 +956,18 @@ public abstract class BinarySignature
       throw new PresentableException(ErrorCode.CANNOT_WRITE_PDF, e);
     }
   }
+  
+  private static void replacePlaceholder(PdfStamper stamper, int pageNr, String placeholderName) throws BadElementException, MalformedURLException, IOException, BadPdfFormatException {
+     Image img = Image.getInstance(SignaturePlaceholderData.class.getResource("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);
+     resources.getAsDict(PdfName.XOBJECT).put(new PdfName(placeholderName), ind.getIndirectReference());
+     stamperImp.markUsed(resources);
+  }
+  
 
   /**
    * Creates the EGIZ Dictionary and adds it to the document.
-- 
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