#include "ltwrappr.h"
#include "LTCPDFComp.h"
L_INT LPDFCompressor::InsertMRC(pBitmap, pPDFOptions)
Segments the specified image using MRC segmentation, compresses it, and inserts the image in the PDF file in memory.
Pointer to the bitmap object that references the image to be inserted in the PDF file.
Pointer to the PDFCOMPOPTIONS structure that contains options used to write the image to the PDF file in memory.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
To insert the bitmap without using MRC segmentation, use LPDFCompressor::InsertNormal.
This function calls the LPDFCompressor::ImageCallBack, if LBase::EnableCallBack was set to TRUE, to allow the user to accept or reject the addition of any segment to the PDF document.
Required DLLs and Libraries
This example inserts an image in a pdf document and uses MRC segmentation to segment this image. In this sample we don't need to add a background segment.
class LPDFCompressorKidIM : public LPDFCompressor
{
protected:
L_INT ImageCallBack(L_INT nPage, LPSEGMENTINFO pSegment)
{
UNREFERENCED_PARAMETER(nPage);
if(pSegment->uSegmentType == SEGTYPE_BACKGROUND)
return FAILURE;
else
return SUCCESS;
}
};
L_INT LPDFCompressor__InsertMRCExample(HWND hwnd)
{
LPDFCompressorKidIM pdf ;
L_INT nRet;
LBitmap LEADBitmap;
PDFCOMPOPTIONS PDFOptions;
PDFCOMPRESSION pdfComp;
CString szMsg;
CString szImagesPath = MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP"));
CString szOutPath = MAKE_IMAGE_PATH(TEXT("Output(InsertMRC).pdf"));
memset(&PDFOptions,0,sizeof(&PDFOptions));
pdf.EnableCallBack (TRUE);
nRet = pdf.Init ();
if (nRet != SUCCESS)
{
MessageBox(hwnd, TEXT("Couldn't initialize pdf compressor"), TEXT("Error"), MB_OK) ;
return nRet;
}
pdfComp.uStructSize = sizeof( pdfComp );
pdfComp.dwFlags = PDFCOMP_1BITCOMPTYPE_ENABLED | PDFCOMP_2BITCOMPTYPE_ENABLED | PDFCOMP_PICTURECOMPTYPE_ENABLED;
pdfComp.comp1Bit = PDFCOMP_1BITCOMPTYPE_JBIG2;
pdfComp.comp2Bit = PDFCOMP_2BITCOMPTYPE_ZIP;
pdfComp.compPicture = PDFCOMP_PICTURECOMPTYPE_JPEG;
pdfComp.nQFactor =50;
nRet = pdf.SetCompression ( &pdfComp );
if(nRet != SUCCESS)
{
pdf.Free ();
return nRet;
}
PDFOptions.uStructSize = sizeof(PDFCOMPOPTIONS);
PDFOptions. dwFlags = PDFCOMP_FAVOR_ONEBIT | PDFCOMP_WITH_BACKGROUND;
PDFOptions.imageQuality = PDFCOMP_IMAGEQUALITY_USER;
PDFOptions.outputQuality = PDFCOMP_OUTPUTQUALITY_USER;
PDFOptions.uCleanSize = 7;
PDFOptions.uBackGroundThreshold = 15;
PDFOptions.uCombineThreshold = 100;
PDFOptions.uSegmentQuality = 50;
PDFOptions.uColorThreshold = 25;
nRet = LEADBitmap.Load((L_TCHAR *)(LPCTSTR)szImagesPath);
if(nRet != SUCCESS)
{
szMsg.Format(TEXT("Failed to load source image %s"),szImagesPath);
MessageBox(hwnd,szMsg, TEXT("Error"), MB_OK);
pdf.Free();
return nRet;
}
nRet = pdf.InsertMRC(&LEADBitmap, &PDFOptions);
if(nRet != SUCCESS)
return nRet;
nRet = pdf.Write (((L_TCHAR *)(LPCTSTR)szOutPath));
if (nRet ==SUCCESS)
{
szMsg.Format(TEXT("Result saved to %s"),szOutPath);
MessageBox( hwnd,szMsg, TEXT("Error"), MB_OK);
}
else
{
MessageBox( hwnd, TEXT("Failed to save result"), TEXT("Error"), MB_OK);
return nRet;
}
pdf.Free ();
return SUCCESS;
}