From 5b2afac565a29266ef60c4e3039b8258712210f9 Mon Sep 17 00:00:00 2001
From: pdanner <pdanner@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Tue, 15 Feb 2011 17:24:23 +0000
Subject: improved link overlay positioning

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@758 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../wag/egov/egiz/pdf/StructContentHelper.java     | 47 +++++++++++++++++-----
 1 file changed, 37 insertions(+), 10 deletions(-)

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/StructContentHelper.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/StructContentHelper.java
index 220f9b7..a754b8e 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/StructContentHelper.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/StructContentHelper.java
@@ -1,6 +1,8 @@
 package at.knowcenter.wag.egov.egiz.pdf;
 
 import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
 
 import org.apache.log4j.Logger;
 
@@ -23,6 +25,7 @@ import com.lowagie.text.pdf.PdfString;
 import com.lowagie.text.pdf.PdfTemplate;
 import com.lowagie.text.pdfas.StructContentWriter;
 import com.lowagie.text.pdfas.StructContentWriterHolder;
+import com.lowagie.text.pdfas.UrlInTextFinder;
 
 /**
  * Helper class for writing the structure hierarchy of the signature elements.
@@ -408,7 +411,17 @@ public class StructContentHelper implements StructContentWriter {
     */
    public void storeCurrentPosAsLink() {
       this.verifyLinkPos = new Rectangle(this.tempMarkedPos);     
-   }  
+   }
+   
+   private Map tmpMap = new HashMap();
+   public void putVal(String key, Object val) {
+      tmpMap.put(key, val);      
+   }
+
+   private Map linkPosMap;
+   public void storeVals() {
+      linkPosMap = new HashMap(tmpMap);
+   }   
    
    /**
     * set explicit annotation tab order if missing 
@@ -450,7 +463,7 @@ public class StructContentHelper implements StructContentWriter {
       // iText "converts" 0.0f to an integer, therefore we cannot use 0, not nice...
       //linkAnnot.put(PdfName.RECT, new PdfArray(new float[] {0.01f, 0.01f, 0.01f, 0.01f}));
       // take cell pos as link pos
-      linkAnnot.put(PdfName.RECT, new PdfArray(createAbsPos(atp, this.verifyLinkPos)));
+      linkAnnot.put(PdfName.RECT, new PdfArray(calcLinkPos(atp, this.verifyLinkPos)));
       
       linkAnnot.put(PdfName.STRUCTPARENT, structParentNr);
       linkAnnot.put(PdfName.SUBTYPE, PdfName.LINK);
@@ -459,15 +472,31 @@ public class StructContentHelper implements StructContentWriter {
    }
 
 
-   private static PdfArray createAbsPos(ActualTablePos atp, Rectangle pos) {
+   private PdfArray calcLinkPos(ActualTablePos atp, Rectangle pos) {
       PdfArray res = new PdfArray();
-      float y = atp.y - atp.height + pos.getTop();
-      res.add(new PdfNumber(atp.x + pos.getLeft()));
-      res.add(new PdfNumber(y));
-      res.add(new PdfNumber(atp.x + pos.getLeft() + pos.getWidth()));      
-      res.add(new PdfNumber(y - pos.getHeight()));
+      float downY = atp.y - atp.height + pos.getTop() - pos.getHeight();
+
+       float startX = atp.x + pos.getLeft(); 
+       float yLine = getPosMapVal("yLine");
+       float lineHigh = getPosMapVal("maxSize");;
+       float lineWidth = getPosMapVal("lineWidth");
+       UrlInTextFinder finder = (UrlInTextFinder) this.linkPosMap.get("urlFinder");      
+       
+       // maybe one could calc the link pos even more exactly with char with counting 
+       // but this should be close enough (see BidiLine.processLine and chung.getcharwith)
+       float lineCorr = -2;
+       float xCorr = 2;
+       res.add(new PdfNumber(xCorr +startX + finder.calcLinkPosXStart(lineWidth)));
+       res.add(new PdfNumber(downY + yLine + lineHigh + lineCorr));
+       res.add(new PdfNumber(xCorr + startX + finder.calcLinkPosXEnd(lineWidth)));      
+       res.add(new PdfNumber(downY + yLine + lineCorr));
+      
       return res;
    }
+
+   private float getPosMapVal(String key) {
+      return ((Float) this.linkPosMap.get(key)).floatValue();
+   }
    
    protected static PdfArray createPdfArrayFromTablePos(ActualTablePos pos) {
       return new PdfArray( new float[] {pos.x, pos.y, pos.x + pos.width, pos.y - pos.height});
@@ -645,6 +674,4 @@ public class StructContentHelper implements StructContentWriter {
       return AdobeSignatureHelper.getDefaultableConfigProperty(sigProfile, ALT_TEXT_CONF_KEY, ALT_TEXT_DEFAULT);
    }
 
- 
-
 }
-- 
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