op.document.exportToImages

Latest revision as of 14:04, 25 November 2016

Overview

The operation allows to export document pages to the image files with given DPI, zoom factor and specified format.

Parameters

Sample

//C#
private void ExportToImages(PDFXEdit.IPXV_Document Doc, PDFXEdit.PXV_Inst Inst)
{
	int nID = Inst.Str2ID("op.document.exportToImages", false);
	PDFXEdit.IOperation Op = Inst.CreateOp(nID);
	PDFXEdit.ICabNode input = Op.Params.Root["Input"];
	input.Add().v = Doc;
	PDFXEdit.ICabNode options = Op.Params.Root["Options"];
	options["PagesRange.Type"].v = "Exact";
	options["PagesRange.Text"].v = "1-3";
	options["DestFolder"].v = "D:\\TestFolder\\"; //Output folder
	options["ExportMode"].v = "AllToMutliPage";
	options["Zoom"].v = 150;
	//Saving as tiff
	PDFXEdit.ICabNode fmtParams = options["FormatParams"];
	//Compression type
	fmtParams["COMP"].v = 5; //LZW compression
	//X DPI
	fmtParams["DPIX"].v = 150;
	//Y DPI
	fmtParams["DPIY"].v = 150;
	//Image format
	fmtParams["FMT"].v = 1414088262; //TIFF
	//Image type
	fmtParams["ITYP"].v = 16; //24 TrueColor
	//Use Predictor
	fmtParams["PRED"].v = 1; //Yes
	//Thumbnail
	fmtParams["THUM"].v = 0; //No

	Op.Do();
}

//C++
#define MAKE_ID(a, b, c, d)		((a) << 24) | ((b) << 16) | ((c) << 8) | (d)

#define FMT_BMP_ID			MAKE_ID('B', 'M', 'P', ' ')
#define FMT_GIF_ID			MAKE_ID('G', 'I', 'F', ' ')
#define FMT_TIFF_ID			MAKE_ID('T', 'I', 'F', 'F')
#define FMT_JPG_ID			MAKE_ID('J', 'P', 'G', ' ')
#define FMT_PNG_ID			MAKE_ID('P', 'N', 'G', ' ')

HRESULT ExportToImages(PXV::IPXV_Document* pVDoc, PXV::IPXV_Inst* pInst)
{
	if ((pVDoc == nullptr) || (pInst == nullptr))
		return E_FAIL;
	HRESULT hr = S_OK;
	//Export to images
	do
	{
		LONG opID = -1;
		pInst->Str2ID(L"op.document.exportToImages", false, &opID);
		if (opID < 0)
			break;
		CComPtr<PXV::IOperation> pOp;
		hr = pInst->CreateOp(opID, &pOp);
		if (FAILED(hr))
			break;
		//Getting parameters
		CComPtr<PXV::ICab> pParams;
		hr = pOp->get_Params(&pParams);
		if (FAILED(hr))
			break;
		CComPtr<PXV::ICabNode> pRoot;
		hr = pParams->get_Root(&pRoot);
		if (FAILED(hr))
			break;
		//Setting input document
		CComPtr<PXV::ICabNode> pInput;
		hr = pRoot->get_SubNode(CComVariant("Input"), PXV::dt_Array, &pInput);
		if (FAILED(hr))
			break;
		CComPtr<PXV::ICabNode> pDocNode;
		hr = pInput->Add(PXV::dt_IUnknown, &pDocNode);
		if (FAILED(hr))
			break;
		hr = pDocNode->put_Unknown(pVDoc);
		if (FAILED(hr))
			break;

		//Setting options
		CComPtr<PXV::ICabNode> pOptions;
		hr = pRoot->get_SubNode(CComVariant("Options"), PXV::dt_Undefined, &pOptions);
		if (FAILED(hr))
			break;
		pOptions->SetString(L"PagesRange.Type", L"Exact");
		pOptions->SetString(L"PagesRange.Text", L"1-3");
		pOptions->SetString(L"DestFolder", L"D:\\TestFolder\\");
		pOptions->SetString(L"ExportMode", L"AllToMutliPage");
		pOptions->SetInt(L"Zoom", 150);
		//Image format parameters
		CComPtr<PXV::ICabNode> pFmtParams;
		hr = pOptions->get_SubNode(CComVariant("FormatParams"), PXV::dt_Undefined, &pFmtParams);
		if (FAILED(hr))
			break;
		//Compression type
		pFmtParams->SetInt(L"COMP", 5); //LZW compression
		//X DPI
		pFmtParams->SetInt(L"DPIX", 150);
		//Y DPI
		pFmtParams->SetInt(L"DPIY", 150);
		//Image format
		pFmtParams->SetInt(L"FMT", FMT_TIFF_ID); //TIFF
		//Image type
		pFmtParams->SetInt(L"ITYP", 16); //24 TrueColor
		//Use Predictor
		pFmtParams->SetInt(L"PRED", 1); //Yes
		//Thumbnail
		pFmtParams->SetInt(L"THUM", 0); //No

		hr = pOp->Do(0);

	} while (false);
	return hr;
}