new positioning of signature table

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@45 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 104 insertions, 71 deletions

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/PdfAS.java b/src/main/java/at/knowcenter/wag/egov/egiz/PdfAS.java
index f9ab652..59a4987 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/PdfAS.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/PdfAS.java
@@ -1018,38 +1018,118 @@ public abstract class PdfAS
         pos = PdfAS.parsePositionFromPosString(pos_string);

       }

     }

-

     if (pos == null)

     {

-      // The automatic algorithm.

-      return PdfAS.adjustTableAndCalculatePosition(pdf, pdf_table);

+      // The default algorithm. x,y,w =auto ,p=lastpage, f:ignored because y:auto

+      pos = new TablePos();	

     }

-

-    if (pos.page == -2)

+    //System.out.println("Tablepos="+pos);

+    return PdfAS.adjustSignatureTableandCalculatePosition(pdf, pdf_table, pos);    

+  }

+  /**

+   * Sets the width of the table according to the layout of the document and

+   * calculates the y position where the PDFPTable should be placed.

+   * 

+   * @param pdf

+   *          The PDF document.

+   * @param pdf_table

+   *          The PDFPTable to be placed.

+   * @return Returns the position where the PDFPTable should be placed.

+   * @throws PDFDocumentException

+   *           F.e.

+   */

+  public static PositioningInstruction adjustSignatureTableandCalculatePosition(

+      final byte[] pdf, PdfPTable pdf_table, TablePos pos) throws PDFDocumentException

+  {

+    //first check pageinstruction in TablePos-object

+	//new,auto,absolut

+	PdfReader reader = readInPdfDocument(pdf);

+	//get pages of currentdocument

+	int doc_pages = reader.getNumberOfPages();

+	int page = doc_pages;

+	if(!(pos.isNewPage() || pos.isPauto()))

+	{

+	  //we should posit signaturtable on this page

+	  page = pos.getPage();

+	  if (page > doc_pages)

+	  {

+		  throw new PDFDocumentException(227, "Page number is to big(=" + page+ ") cannot be parsed.");

+	  }

+	}

+	boolean make_new_page = pos.isNewPage();

+    //getPagedimensions

+    Rectangle psize = reader.getPageSizeWithRotation(page);

+    float page_width = psize.width();

+    float page_height = psize.height();

+    //now we can calculate x-position

+    float pre_pos_x = SIGNATURE_BORDER / 2;

+    if (!pos.isXauto())

+    {

+      //we do have absolute x

+      pre_pos_x = pos.getPosX();

+    }     

+    final float pos_x = pre_pos_x;

+    //calculate width

+    float pre_width = page_width - pos_x - SIGNATURE_BORDER / 2;

+    if (!pos.isWauto())

     {

-      // The automatic algorithm regarding the footer.

-      return PdfAS.adjustTableAndCalculatePositionRegardingFooter(pdf, pdf_table, pos.footer_line);

+      //we do have absolute width

+      pre_width = pos.getWidth();

+    }    

+    final float width = pre_width;

+    //Signatur table dimensions are complete 

+    pdf_table.setTotalWidth(width);

+    pdf_table.setLockedWidth(true);

+    final float table_height = pdf_table.getTotalHeight();

+    //now check pos_y

+    float pos_y = pos.getPosY();

+    if (!pos.isYauto())

+    {

+    	//we do have y-position too --> all parameters but page ok 

+        if (make_new_page)

+        {

+        	page++;

+        } 

+        return new PositioningInstruction(make_new_page, page, pos_x, pos_y);

     }

-

-    boolean make_new_page = false;

-    int page = pos.page;

-

-    if (pos.page == -1)

+    //pos_y is auto

+    if (make_new_page)

+    {

+    	//ignore footer in new page

+    	page++;

+    	pos_y = page_height - SIGNATURE_BORDER / 2;

+    	return new PositioningInstruction(make_new_page, page, pos_x, pos_y); 

+    }     

+    //up to here no checks have to be made if Tablesize and Pagesize are fit 

+    //Now we have to getfreespace in page and reguard footerline  

+    float footer_line = pos.getFooterLine();

+    float pre_page_length = PDFUtilities.calculatePageLength(pdf, page-1, page_height-footer_line);

+    if (pre_page_length == Float.NEGATIVE_INFINITY)

+    {

+    	//we do have an empty page

+    	//pre_page_length = page_height;

+    	pos_y = page_height - SIGNATURE_BORDER / 2;

+    	return new PositioningInstruction(make_new_page, page, pos_x, pos_y);

+    }    

+    final float page_length = pre_page_length;

+    pos_y = page_height - page_length - SIGNATURE_MARGIN;

+    if (pos_y - footer_line <= table_height)

     {

-      // Absolute positioning on a new page.

       make_new_page = true;

-      PdfReader reader = PdfAS.readInPdfDocument(pdf);

-      page = reader.getNumberOfPages() + 1;

-      reader = null;

+      if (!pos.isPauto())

+      {  

+    	page = reader.getNumberOfPages();

+        

+      }

+      page++;

+      pos_y = page_height - SIGNATURE_BORDER / 2;

     }

-

-    pdf_table.setTotalWidth(pos.width);

-    pdf_table.setLockedWidth(true);

-

-    return new PositioningInstruction(make_new_page, page, pos.pos_x, pos.pos_y);

-

+    return new PositioningInstruction(make_new_page, page, pos_x, pos_y);

   }

 

+  

+  

+  

   /**

    * Sets the width of the table according to the layout of the document and

    * calculates the y position where the PDFPTable should be placed.

@@ -1175,61 +1255,14 @@ public abstract class PdfAS
    * Parses the TablePos object from a given String with the appropriate format.

    * 

    * @param pos_string

-   *          The pos string. e.g. 1;40.0;600.0;300.0

+   *          The pos string. e.g. x:40.0;y:auto;w:auto;p:1;f:300.0 

    * @return Returns the parsed TablePos object.

    * @throws PDFDocumentException

    *           Thrown, if the String doesn't have the proper format.

    */

   public static TablePos parsePositionFromPosString(String pos_string) throws PDFDocumentException

   {

-    String[] strs = pos_string.split(";");

-

-    try

-    {

-      TablePos pos = new TablePos();

-      pos.page = Integer.parseInt(strs[0]);

-

-      if (pos.page < 1 && pos.page != -1 && pos.page != -2)

-      {

-        throw new PDFDocumentException(225, "Page (=" + pos.page + ") must not be lower than -2 and must not be 0.");

-      }

-

-      if (pos.page == -2)

-      {

-        if (strs.length != 2)

-        {

-          throw new PDFDocumentException(224, "Pos string (=" + pos_string + ") is invalid.");

-        }

-

-        pos.footer_line = Float.parseFloat(strs[1]);

-      }

-      else

-      {

-        if (strs.length != 4)

-        {

-          throw new PDFDocumentException(224, "Pos string (=" + pos_string + ") is invalid.");

-        }

-

-        pos.pos_x = Float.parseFloat(strs[1]);

-        pos.pos_y = Float.parseFloat(strs[2]);

-        pos.width = Float.parseFloat(strs[3]);

-

-        if (pos.page < 1 && pos.page != -1)

-        {

-          throw new PDFDocumentException(225, "pos.page (=" + pos.page + ") must not be lower than -1 and must not be 0.");

-        }

-

-        if (pos.width <= 0.0f)

-        {

-          throw new PDFDocumentException(226, "pos.width (=" + pos.width + ") must not be lower or equal 0.");

-        }

-      }

-

+      TablePos pos = new TablePos(pos_string);

       return pos;

-    }

-    catch (NumberFormatException e)

-    {

-      throw new PDFDocumentException(224, "Pos string (=" + pos_string + ") cannot be parsed.");

-    }

   }

 }