XPS to GDI conversion

Question

Hi

 i want to use XPS to GDI conversion path for GDI based printer.

From MSDN i came to know that

The XPSDrv model also provides a converter for XPS to GDI format so that Win32 applications can print XPS Documents. 

Can anybody help me how can i get a postscript as an output from a XPS printer Driver.

Regards

Abhishek

Answer 1

Hi,

This conversion is avaiable when WPF app is printing to GDI driver, in that case it converts automatically XPS to GDI. If your driver is PScript driver then automatically you get the PS effect even from WPF app writing XPS content.

How about having last filter as PDL filter that generates PS output.

Thanks

Answer 2

Hi ,

    

Yeh you are right we can have last filter as PDL filter which generates PS output.

 

can you point me on some links where i can get some base code or info  about how to convert XPS to postscript.

 

Is WDK having any base code for this conversion???

 

Regards

Abhishek

Answer 3

I don't think there's any code/samples for converting XPS to postscript in the WDK... and I think it's not that easy to do...

However you could have a look at the example in the WPFSamples/DocServices/DocumentSerialize folder...
this shows you how to serialize a document to an external file in one of several popular formats: flow document XAML, HTML, RTF, plain text, WordXML, or XPS... maybe it helps...

another thing you should donwload is the "Microsoft Xml Paperspecification", where all of XPS is described and you could use for your conversion...

_______

@CTA: "How about having last filter as PDL filter that generates PS output."

do you have an example for how to add a PDL filter? or any link? would be interesting for me too.. (c;

Answer 4

I don't have any Jo.

Answer 5

This is not a direct answer to your question, but maybe this can help:

A possibility is to use the the Harlequin XPS reference RIP Microsoft bought some time ago (http://www.microsoft.com/whdc/device/print/RRIP.mspx).

This includes an XPS filter. As far as I know, it cannot generate PostScript, but can generate a TIFF from the the XPS pages. From there, in another filter placed after the Harlequin filter, you could convert the TIFF image to a PostScript image that could be printed by a PostScript printer. The conversion would be an easy matter in that case, either doing that programmatically yourself, or using one of the many converters on the market.

Not sure that covers your need, only my 2 cents! ;-)

/Sas

Answer 6

Converting XPS to BMP, JPG, TIFF... is quite easy to do with the RenderTarget-Class...

public void SaveXpsPageToBitmap(string xpsFileName)
    {
      XpsDocument xpsDoc = new XpsDocument(xpsFileName, System.IO.FileAccess.Read);
      FixedDocumentSequence docSeq = xpsDoc.GetFixedDocumentSequence();

      int pageCount = docSeq.References[0].GetDocument(false).Pages.Count;

      // You can get the total page count from docSeq.PageCount
      for(int pageNum = 0; pageNum < pageCount; pageNum ++)
      {
        DocumentPage docPage = docSeq.DocumentPaginator.GetPage(pageNum);
        BitmapImage bitmap = new BitmapImage();
        RenderTargetBitmap renderTarget =
            new RenderTargetBitmap((int)docPage.Size.Width,
                                    (int)docPage.Size.Height,
                                    96, // WPF (Avalon) units are 96dpi based
                                    96,
                                    System.Windows.Media.PixelFormats.Pbgra32);
        renderTarget.Render(docPage.Visual);

        BitmapEncoder encoder = new BmpBitmapEncoder();  // Choose type here ie: JpegBitmapEncoder, TiffBitmapEncoder etc.
        encoder.Frames.Add(BitmapFrame.Create(renderTarget));

        FileStream pageOutStream = new FileStream(xpsFileName + ".Page" + pageNum + ".bmp", FileMode.Create, FileAccess.Write);
        encoder.Save(pageOutStream);
        pageOutStream.Close();
      }
    }

however if you need to manipulate the document afterwards again (inserting additional PS/PCL-commands for OMR-Codes for example), you have no chance because of using images instead of a postscript/pcl-code...

Answer 7

can I create a 8 Bpp from XPS document using RenderTargerBitmap?
When ever i use
RenderTargetBitmap renderTarget =
            new RenderTargetBitmap((int)docPage.Size.Width,
                                    (int)docPage.Size.Height,
                                    96, // WPF (Avalon) units are 96dpi based
                                    96,
                                    System.Windows.Media.PixelFormats.Indexed8);
The method fails with an exception,
Can anyone Let me know how to create a 8 Bpp from xps document?

Answer 8

Hi Jo0815

I want to conver XPS Document in Tiff.

Your code seems to be a Pinnacle for me.

Can you please explain where this code need to be inserted. In XPSDrv sample I am unable to find Render target class.

Is any similar sample available in WDk?

Thank you very much.

Samual

Answer 9

Hi Samual,

RenderTargetBitmap is part of .Net (in System.Windows.Media.Imaging). You won't find it in the XPSdrv sample because managed code (.Net) is not supported for print driver development. For an alternative see the XPS Rasterization Services and sample in the Windows 7 WDK.

/aiddy

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http://blogs.msdn.com/adrianford

Answer 10

try yahoo.com for omr and you will find lot of useful resources like

http://www.omrchina.com

http://www.omrhome.com

http://www.omrsolutions.com

Answer 11

Search yahoo.com and you will find useful sites like

forum.mess.be

http://www.gingerwebs.com

www.ozzu.com/bing-forum

Answer 12

Hi,

This conversion is avaiable when WPF app is printing to GDI driver, in that case it converts automatically XPS to GDI. If your driver is PScript driver then automatically you get the PS effect even from WPF app writing XPS content.

How about having last filter as PDL filter that generates PS output.

Thanks

Thanks for your effort! It's helpful to me, It's quite useful.

Answer 13

Use XpsRasterizer to generate raster data( tiff,png, jpeg) then embedded this raster data into your PostScript file.

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C--s