Hi Hugh,
this is a working solution for Java. You just have to convert it to C#.
if (img != null) {
// scale if too big to fit on page
if (img.getScaledWidth() > PageSize.A4.getWidth() ||
img.getScaledHeight() > PageSize.A4.getHeight()) {
// if images have a different resolution (dpi value) for x
and y the scaling considers it
if(img.getDpiX() != 0 && img.getDpiY() != 0 &&
img.getDpiX() != img.getDpiY()){
img.scalePercent(100);
float percentX = (PageSize.A4.getWidth() * 100) /
img.getScaledWidth();
float percentY = ( (PageSize.A4.getHeight() * 100)
/ img.getScaledHeight() );
img.scalePercent(percentX, percentY);
img.setWidthPercentage(0);
}else{
// scaling the image if DPI values for x and y are
the same
// no customized scaling i.e. different values for
x and y necessary
img.scaleToFit(PageSize.A4.getWidth(), PageSize.A4
.getHeight());
}
}
.......// add scaled image to whereever you want it
}
Best regards
Benjamin
Von: Gerold Krommer <gerold.krom...@rrdgds.at>
An: Post all your questions about iText here
<itext-questions@lists.sourceforge.net>
Datum: 13.12.2011 10:34
Betreff: Re: [iText-questions] Converting Fax Tiff to PDF
204x196 dpi is the standard resolution for fax images here in Europe. The
values are perfectly plausible and the unequal resolution in horizontal
and vertical resolution is the cause
of a lot of grief with many viewers
Kind regards,
/Gerold
Von: Hugh McLaughlin [mailto:h...@kmcnetwork.com]
Gesendet: Dienstag, 13. Dezember 2011 03:44
An: Post all your questions about iText here
Betreff: Re: [iText-questions] Converting Fax Tiff to PDF
Thanks again for the response. I’ve looked through the documentation and
tried the following:
Dim img = iTextSharp.text.pdf.codec.TiffImage.GetTiffImage(tifArray,
pageno)
Dim xValue As String = img.DpiX.ToString
Dim yValue As String = img.DpiY.ToString
I converted to string just to see what it returned. However, it returned
an x value of 204 and a y value of 196 which seems abnormally low and out
of proportion. I think I’m barking up the wrong tree but I didn’t find
anything else that looked like it would return a dpi.
From: Paulo Soares [mailto:psoa...@glintt.com]
Sent: Monday, December 12, 2011 2:00 PM
To: Post all your questions about iText here
Subject: Re: [iText-questions] Converting Fax Tiff to PDF
You'll have to scale in both axis with different values. Use
iTextSharp.text.pdf.codec.TiffImage. This will return an
iTextSharp.text.Image with the right X and Y dpi information.
Paulo
From: Hugh McLaughlin [mailto:h...@kmcnetwork.com]
Sent: Monday, December 12, 2011 5:33 PM
To: Post all your questions about iText here
Subject: Re: [iText-questions] Converting Fax Tiff to PDF
Are you saying do without the line that scales the image?
From: Paulo Soares [mailto:psoa...@glintt.com]
Sent: Monday, December 12, 2011 12:39 PM
To: Post all your questions about iText here
Subject: Re: [iText-questions] Converting Fax Tiff to PDF
Load the image directly from the tiff or you'll lose the dpi information.
Paulo
From: Hugh McLaughlin [mailto:h...@kmcnetwork.com]
Sent: Monday, December 12, 2011 5:15 PM
To: itext-questions@lists.sourceforge.net
Subject: [iText-questions] Converting Fax Tiff to PDF
Hello Everyone and thanks for your help in advance. I am developing an
application with iTextSharp to transform inbound faxes to PDF files.
However, when converted to PDF files, some of the faxes do not display
properly, for example they appear shortened on the page and out of correct
resolution. All of the text appears, but squashed on the page. It
appears that my code does not properly account for various dpi settings of
the inbound faxes, but I am unsure how to account for this. Here is my
code:
' creation of the document with a certain size and certain margins
Dim document As New
iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 0, 0, 0, 0)
' creation of the different writers
Dim writer As iTextSharp.text.pdf.PdfWriter =
iTextSharp.text.pdf.PdfWriter.GetInstance(document, New
System.IO.FileStream(DestinationFile, System.IO.FileMode.Create))
' load the tiff image and count the total pages
Dim bm As New System.Drawing.Bitmap(SourceFile)
Dim total As Integer =
bm.GetFrameCount(System.Drawing.Imaging.FrameDimension.Page)
document.Open()
Dim cb As iTextSharp.text.pdf.PdfContentByte =
writer.DirectContent
For k As Integer = 0 To total - 1
bm.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Page, k)
Dim img As iTextSharp.text.Image =
iTextSharp.text.Image.GetInstance(bm,
System.Drawing.Imaging.ImageFormat.Bmp)
' scale the image to fit in the page
img.ScalePercent(72.0F / img.DpiX * 100)
img.SetAbsolutePosition(0, 0)
cb.AddImage(img)
document.NewPage()
Next
document.Close()
Any help would be greatly appreciated.
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_______________________________________________
iText-questions mailing list
iText-questions@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions
iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
