Convert JPG to XPS A lot of people ask for the ability that our NiXPS SDK can generate XPS files direct from all kinds of different file formats.

We are working on a general solution for all printable document formats.
But if the file you want to create an XPS from happens to be an image file, then this is quite easy to do with our SDK.

This is possible via our object model ever since our v2.0 SDK.
But to make it easier, as of NiXPS SDK v2.5.2, we are providing an extra convience function to do this.

In the following .NET example is shown you how to use our library to generate an XPS file from a JPEG file, with only a few lines of code:

static void TestGenerateXPSFromJPEG() 
{ 
 string lFile1 = "../../examples/testfiles/siena.jpg"; 
 string lOutputFile = "../../examples/output/siena.xps"; 
 NOHandler lPackage = NOPackage_createFromImage(System.Text.Encoding.UTF8.GetBytes(lFile1)); 
 NOPackage_writePackageToFile(ref lPackage, System.Text.Encoding.UTF8.GetBytes(lOutputFile));
 NOPackage_destroyPackage(ref lPackage); 
}

(note: an 'NOPackage' is NiXPS SDK speak for an XPS file).

It all boils down to: NOPackage_createFromImage.
This call also works for easy conversion of PNG, HD Photo and TIFF files to XPS.

If you are using our library from C++ you can also make use of the same convenience function: NOPackage::createFromImage.

As an alternative you can access the XPS object model and program directly on top of the object level API of our library. Your code to achieve the same result would look like this:

void createXPSFromJPEG()
{
    NOPackage *lPackage = NOPackage::createPackage(true);
    NODocument lSourceDoc1=lPackage->getDocument(0);
    NOPage lPage = lSourceDoc1.createPage();
    NOImage lImage = lPage.addImage("../testfiles/siena.jpg");
    NOXFixedPage lFixedPage = lPage.getFixedPage();
    UInt32 lWidth = lImage.getWidthInPixels();
    double lXFactor = lImage.getXResolution() / 96.;
    UInt32 lHeight = lImage.getHeightInPixels();
    double lYFactor = lImage.getYResolution() / 96.;
               
    lFixedPage.intialize(lWidth*lXFactor,lHeight*lYFactor);

    NOXCanvas lCanvas = lFixedPage.createCanvas(0);
               
    UTF8String lFilename = lImage.getFileName();
               
    char lRectangle[100];
    sprintf(lRectangle,"M 0,0 L %f,0 %f,%f 0,%f z",
                       lWidth*lXFactor,lWidth*lXFactor,
                       lHeight*lYFactor,lHeight*lYFactor);

    NOXPath lXPath = lCanvas.createPath(0);
    lXPath.setData(NOString(lRectangle));
               
    NOXCP_Brush lBrush = lXPath.createPathFill(0);
    NOXImageBrush lImageBrush = lBrush.createImageBrush(0);
               
    sprintf(lRectangle,"0,0,%f,%f",lWidth/lXFactor,lHeight/lYFactor);
    lImageBrush.setViewbox(NOXViewBox(NOXStringBase(NOString(lRectangle))));
    sprintf(lRectangle,"0,0,%f,%f",lWidth*lXFactor,lHeight*lYFactor);
    lImageBrush.setViewport(NOXViewBox(NOString(lRectangle)));
 lImageBrush.setTileMode(NiXPSObjects::None);
    lImageBrush.setViewboxUnits(NiXPSObjects::Absolute);
    lImageBrush.setViewportUnits(NiXPSObjects::Absolute);
               
    NCommon::UTF8String lBaseString(lImage.getPartName());
    lBaseString = "/" + lBaseString;
    lImageBrush.setImageSource(NOString(lBaseString.c_str()));

    lPackage->writePackageToFile(pOut);
    NOPackage::destroyPackage(lPackage);
}

A bit more 'chatty', but it shows the flexibility of the object model.
You could use this also as a start to add more things on top (like text, more images, etc...).

If you want a trial version of our library: get it here.
You can also browse through the documentation of our library.

We appreciate any feedback and gladly help you out with all your questions.  ¶ 12:24