PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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PostPosted: Thu Jul 06, 2017 11:12 am 
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Joined: Thu Jul 06, 2017 11:07 am
Posts: 2
Hi, I use your component for building PDP from a set of images and other pdf files.
Unfortunately arose a problem with files Tiff.
Your component perfectly working with multi-page monochrome tiffs.
However, when trying to use a color multipage Tiff, to the PDF is added 1 gray blank page instead of multi-page block.
Question: Is there a solution for color, multi-page TIFF?
Here is the code I'm using.
Code:
                            using (Image MyImage = Image.FromFile(pdfPart.Value))
                            {

                                for (int PageIndex = 0; PageIndex < MyImage.GetFrameCount(FrameDimension.Page); PageIndex++)
                                {
                                    MyImage.SelectActiveFrame(FrameDimension.Page, PageIndex);

                                    var stream = new System.IO.MemoryStream();
                                    MyImage.Save(stream, ImageFormat.Tiff);
                                    stream.Position = 0;
                                    XImage img = XImage.FromStream(stream);
   
                                    var page = new PdfPage();

                                    if (img.PixelWidth > img.PixelHeight)
                                        page.Orientation = PdfSharp.PageOrientation.Landscape;
                                    else
                                        page.Orientation = PdfSharp.PageOrientation.Portrait;
                                    outputDocument.AddPage(page);
                                    using (XGraphics xgr = XGraphics.FromPdfPage(outputDocument.Pages[targetPageIndx]))
                                    {
                                        xgr.DrawImage(img, 0, 0);
                                    }
                                    targetPageIndx++;
                                }
                            }


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PostPosted: Thu Jul 06, 2017 12:59 pm 
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empira Employee
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Joined: Mon Oct 16, 2006 8:16 am
Posts: 2689
Location: Cologne, Germany
Hi!

Instead of calling "Save" and "FromStream", you can call "DrawImage" directly for your "MyImage" object (provided you use the GDI+ build of PDFsharp).

See also:
viewtopic.php?f=2&t=832

_________________
Regards
Thomas Hoevel
PDFsharp Team


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PostPosted: Sun Jul 09, 2017 9:18 am 
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Joined: Thu Jul 06, 2017 11:07 am
Posts: 2
Thanks for the answer.
I changed the code, but the result has not changed.
Tiff monochrome + multipage is converted into PDF, Tiff colored + multi-page is not converted.
I did a search on the форум topics
Quote:
"The current version of PDFsharp relies on Windows / .NET to read images."

This provided me an answer, since Windows also cannot read these images.


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