[scribus-dev] patch to pdf CropBox

[Ime Prezime]

by default ghostscript use MediaBox to produce an image preview. if a
PDF contains CropBox we get wrong position during image importing in
scribus image container. so we must tell to ghostscript (and podofo )
to use CropBox instead of MediaBox here is the patch...

ilija
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******************************
in file: scimgdataloader_pdf.h

class ScImgDataLoader_PDF 
{
++line 17 protected:
#ifndef HAVE_PODOFO
	bool isCropBoxPresent(QString fn)
#endif

******************************

in file scimgdataloader_pdf.cpp

ScImgDataLoader_PDF::loadPicture(...

++line 67 PoDoFo::PdfPage*         actualPage      = doc.GetPage( page );
...
line 75: args.append("-sOutputFile="+tmpFile);
++#ifdef HAVE_PODOFO
++	if( page->GetObject()->GetDictionary().GetKey("CropBox") )
++#else
++	if( isCropBoxPresent(fn) )
++#endif
++		args.Append(" -dUseCropBox -dFirstPage="+QString::number(qMax(1, page))); 
++	else
line 76:	args.Append(" -dFirstPage="+QString::number(qMax(1, page))); 

line 77:args.append("-dLastPage=" + QString::number(qMax(1, page)));

#ifndef HAVE_PODOFO
bool ScImgDataLoader_PDF::isCropBoxPresent(QString fn)
 {
	bool result = false;
	QString tmp;
	
	QFile f(fn);
	if (f.open(QIODevice::ReadOnly))
	{
		QDataStream ts(&f);
		while (!ts.atEnd())
		{
			tmp = readLinefromDataStream(ts);
			if (tmp.contains("/CropBox"))
			{
				result=true;
				break;
			}
		}
	}
	return result;
}
#endif



**************

in file pdflib_core.h

class PDFLibCore 
{
private:
	bool hasCropBox;
#ifdef HAVE_PODOFO
	PoDoFo::PdfRect cropBox;
#endif

**************

in file pdflib_core.cpp

bool PDFLibCore::PDF_EmbeddedPDF(...
{
++line 6281: hasCropBox = false;

line 6313:   PoDoFo::PdfRect pagesize; // = page->GetPageSize();
++	     if( page->GetObject()->GetDictionary().GetKey("CropBox") )
++	     {
++		pagesize = page->GetCropBox();
++		cropBox = pagesize;				
++		hasCropBox = true;
++	     }
++	     else
++		pagesize = page->GetPageSize();	
line 5893:   int rotation = page->GetRotation();
line 5894:   QWMatrix pageM;
	     pageM.scale(1.0/pagesize.GetWidth(), 1.0/pagesize.GetHeight());
	     pageM.rotate(-rotation);
++	     if(hasCropBox)
++	     {
++		PutDoc("\n/BBox [ 0 0");
++	     }
++	     else
++	     {
		PutDoc("\n/BBox [" + FToStr(pagesize.GetLeft() ));
		PutDoc(" " + FToStr(pagesize.GetBottom() ));
++	     }		
	     PutDoc(" " + FToStr(pagesize.GetLeft() + pagesize.GetWidth() ));
	     PutDoc(" " + FToStr(pagesize.GetBottom() + pagesize.GetHeight() ));
	     PutDoc("]");			
	     ...


bool PDFLibCore::PDF_Image(...
{

line 6263:
	if (!fromAN && output)
	{
#ifdef HAVE_PODOFO
		if(hasCropBox)
			*output = QString(embedPre + FToStr(ImInfo.Width*ImInfo.sxa)+" 0 0 "+FToStr(ImInfo.Height*ImInfo.sya)+" "+FToStr(x*sx - cropBox.GetLeft() )+" "+FToStr(y*sy - cropBox.GetBottom()*ImInfo->sya - cropBox.GetHeight()*ImInfo->sya)+" cm\n/"+ResNam+"I"+QString::number(ImInfo.ResNum)+" Do\n");
		else
#endif
			*output = QString(embedPre + FToStr(ImInfo.Width*ImInfo.sxa)+" 0 0 "+FToStr(ImInfo.Height*ImInfo.sya)+" "+FToStr(x*sx)+" "+FToStr((-ImInfo.Height*ImInfo.sya+y*sy))+" cm\n/"+ResNam+"I"+QString::number(ImInfo.ResNum)+" Do\n");
	}
	else if (output)
		*output = QString("");
	return true;
}