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Last post Dec 30, 2010 04:19 AM by Mikesdotnetting

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mittapalliki...

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itextsharp image rendering

Dec 29, 2010 07:27 PM|LINK

Hi all,

I am using itextsharp for converting html to pdf, the image gets resized in the rendered pdf, i dont know why this is happening,

for example i have image in html like <img width="300" height="202" src="http://localhost/images/2004-12-09-0.gif"/>

and after pdf is generated the image size looks like width around 430px, and height around 270px. i am not scaling images, here is my code can some one help me in this

i don't want to add the images separately, as the html is dynamically generated, and i got all absolute image paths.

<div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">Document document = new Document(PageSize.A4, 72, 72, 72, 72);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //Document document = new Document(PageSize.A4, 80, 50, 30, 65);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   StreamReader reader = null;</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   try</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string repvalue = Request.QueryString[QueryParameter];</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //Request.QueryString["EQVReport"];</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string repname = String.Format("{0}.pdf", repvalue);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string appath = Request.ApplicationPath;</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string pathname = String.Format("{0}PDFs\\{1}", Server.MapPath(PortalSettings.HomeDirectory), repname);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string filename = Server.MapPath(String.Format("{0}{1}{2}/index.html", @appath, urlPath, repvalue));</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //writer - have our own path!!! and see you have write permissions...</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   PdfWriter.GetInstance(document, new FileStream(pathname, FileMode.Create));</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   document.Open();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   reader = new StreamReader(filename);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   string html = reader.ReadToEnd();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   Regex rxImages = new Regex(" src=\"(?!http|https://)([^\"]*)\"", RegexOptions.IgnoreCase & RegexOptions.IgnorePatternWhitespace);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //Regex rxImages = new Regex("\<img.+?src=['""](?!http\:\/\/)([^>]*?\>", RegexOptions.IgnoreCase & RegexOptions.IgnorePatternWhitespace);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   MatchCollection mc = rxImages.Matches(html);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   while (mc.Count > 0)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   Match m = mc[0];</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   html = html.Insert(m.Index + 6, string.Format("http://{0}", Request.Url.Host));</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   mc = rxImages.Matches(html);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   }</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   StyleSheet styles = new StyleSheet();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("ol", "leading", "16,0");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("p", "size", "24px");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("p", "face", "times-roman");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("li", "face", "garamond");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("span", "size", "8px");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("body", "font-family", "times new roman");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   styles.LoadTagStyle("body", "font-size", "10px");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //make an arraylist ....with STRINGREADER since its no IO reading file...</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   ArrayList htmlarraylist = iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(new StringReader(html), styles);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   </div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //HtmlParser.Parse(document, html);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   // step 1: creation of a document-object</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //Document document1 = new Document(PageSize.A4, 80, 50, 30, 65);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste"></div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //// step 2:</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //// we create a writer that listens to the document</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //// and directs a XML-stream to a file</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //PdfWriter.GetInstance(document, new FileStream("C:\\Websites\\DNN\\test.pdf", FileMode.Create));</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //document1.Open();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //// step 3: we parse the document</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //HtmlParser.Parse(document1, filename);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //document1.Close();</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   //add the collection to the document</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   iTextSharp.text.Image gif = iTextSharp.text.Image.GetInstance("http://www.aviationweek.com/awinimages/AWIN.k.gif");</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   gif.ScaleToFit(200f,200f);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   document.Add(gif);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   document.Add(new iTextSharp.text.Paragraph(" "));</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   for (int k = 0; k < htmlarraylist.Count; k++)</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   {</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   document.Add((IElement)htmlarraylist[k]);</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">   }</div>

Document document = new Document(PageSize.A4, 72, 72, 72, 72);

   StreamReader reader = null;

   try

   {

   string pathname = String.Format("{0}PDFs\\{1}", Server.MapPath(PortalSettings.HomeDirectory), repname);

   string filename = Server.MapPath(String.Format("{0}{1}{2}/index.html", @appath, urlPath, repvalue));



   PdfWriter.GetInstance(document, new FileStream(pathname, FileMode.Create));

   document.Open();

   reader = new StreamReader(filename);

   string html = reader.ReadToEnd();

   //make an arraylist ....with STRINGREADER since its no IO reading file...

   ArrayList htmlarraylist = iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(new StringReader(html), null);



   for (int k = 0; k < htmlarraylist.Count; k++)

   {

   document.Add((IElement)htmlarraylist[k]);

   }

}

pdf "asp.net" "C#" pdf viewer iTextSharp

Kiran
- Moved by ignatandrei on Dec 29, 2010 07:31 PM
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Mikesdotnett...

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Re: itextsharp image rendering

Dec 30, 2010 04:19 AM|LINK

You are confusing pixels with Points. iTextSharp doesn't understand pixel widths for images. They are measured in Points, which are 1/72 of an inch. A pixel doesn't have a fixed size.

http://auctionrepair.com/pixels.html

Regards, Mike
Beginning ASP.NET Web Pages with WebMatrix | My Site | Twitter
- Marked as answer by Mikesdotnetting on Jan 26, 2011 07:37 AM

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