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XImage.FromGdiPlusImage() method
https://forum.pdfsharp.net/viewtopic.php?f=2&t=4064		 Page 1 of 1
Author:  mnord [ Mon Nov 25, 2019 8:25 pm ]
Post subject:  XImage.FromGdiPlusImage() method
In version 1.50, I am trying to use XImage.FromGdiPlusImage() and it is not available for the selected image frame.

Image img = Image.FromFile(@"C:\\Multi_page.tif");
string destination = @"C:\\Multi_page.pdf";
PdfDocument document = new PdfDocument();

for (int pageIndex = 0; pageIndex < img.GetFrameCount(FrameDimension.Page); pageIndex++)
{
img.SelectActiveFrame(FrameDimension.Page, pageIndex);
PdfSharp.Drawing.XImage xImage = PdfSharp.Drawing.XImage.FromGdiPlusImage(img);
var page = new PdfPage();
if (xImage.PixelWidth > xImage.PointHeight)
{
page.Orientation = PageOrientation.Landscape;
}
else
{
page.Orientation = PageOrientation.Portrait;
}

document.Pages.Add(page);

PdfSharp.Drawing.XGraphics xgr = PdfSharp.Drawing.XGraphics.FromPdfPage(document.Pages[pageIndex]);
xgr.DrawImage(xImage, 0, 0);
}

What is the alternative that should be used?

Thanks so much!!
Author:  TH-Soft [ Mon Nov 25, 2019 9:21 pm ]
Post subject:  Re: XImage.FromGdiPlusImage() method
mnord wrote:
In version 1.50, I am trying to use XImage.FromGdiPlusImage() and it is not available for the selected image frame.
Where's the problem?
You have to take the GDI+ build of PDFsharp if you want to use GDI+-specific methods like XImage.FromGdiPlusImage().


Quote:
if (xImage.PixelWidth > xImage.PointHeight)
What's the point of comparing PixelWidth and PointHeight?
Author:  mnord [ Mon Nov 25, 2019 9:28 pm ]
Post subject:  Re: XImage.FromGdiPlusImage() method
TH-Soft: How do you select the GDI+ build of PDFSharp? It is not an option with the Nuget package.

As for the PixelWidth and PixelHeight, it is used to set the page orientation.

Thanks,
Marty
Author:  TH-Soft [ Mon Nov 25, 2019 10:11 pm ]
Post subject:  Re: XImage.FromGdiPlusImage() method
mnord wrote:
TH-Soft: How do you select the GDI+ build of PDFSharp? It is not an option with the Nuget package.
Try one of those:
https://www.nuget.org/packages/PDFsharp-gdi/
https://www.nuget.org/packages/PDFsharp-MigraDoc-GDI/

mnord wrote:
As for the PixelWidth and PixelHeight, it is used to set the page orientation.
I don't understand why you compare PixelWidth and PointHeight. Comparing PixelWidth with PixelHeight makes sense.
Author:  mnord [ Mon Nov 25, 2019 10:15 pm ]
Post subject:  Re: XImage.FromGdiPlusImage() method
TH-Soft: Thanks for the reply. I didn't know those options were possible.

I made a typo. It should have been PixelHeight instead of PointHeight. My goof.
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