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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "pdfread.hxx"
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/document/XFilter.hpp>
#include <com/sun/star/document/XImporter.hpp>
#include <com/sun/star/drawing/XDrawPagesSupplier.hpp>
#include <com/sun/star/frame/Desktop.hpp>
#include <com/sun/star/io/XStream.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <comphelper/processfactory.hxx>
#include <comphelper/propertyvalue.hxx>
#include <comphelper/scopeguard.hxx>
#include <unotools/streamwrap.hxx>
#include <vcl/wmf.hxx>
using namespace com::sun::star;
namespace
{
/// Imports a PDF stream into Draw.
uno::Reference<lang::XComponent> importIntoDraw(SvStream& rStream)
{
// Create an empty Draw component.
uno::Reference<frame::XDesktop2> xDesktop = css::frame::Desktop::create(comphelper::getProcessComponentContext());
uno::Reference<frame::XComponentLoader> xComponentLoader(xDesktop, uno::UNO_QUERY);
uno::Sequence<beans::PropertyValue> aLoadArguments =
{
comphelper::makePropertyValue("Hidden", true)
};
uno::Reference<lang::XComponent> xComponent = xComponentLoader->loadComponentFromURL("private:factory/sdraw", "_default", 0, aLoadArguments);
// Import the PDF into it.
uno::Reference<lang::XMultiServiceFactory> xMultiServiceFactory(comphelper::getProcessServiceFactory());
// Need to go via FilterFactory, otherwise XmlFilterAdaptor::initialize() is not called.
uno::Reference<lang::XMultiServiceFactory> xFilterFactory(xMultiServiceFactory->createInstance("com.sun.star.document.FilterFactory"), uno::UNO_QUERY);
uno::Reference<document::XFilter> xFilter(xFilterFactory->createInstanceWithArguments("draw_pdf_import", uno::Sequence<uno::Any>()), uno::UNO_QUERY);
uno::Reference<document::XImporter> xImporter(xFilter, uno::UNO_QUERY);
xImporter->setTargetDocument(xComponent);
uno::Reference<io::XStream> xStream(new utl::OStreamWrapper(rStream));
uno::Sequence<beans::PropertyValue> aImportArguments =
{
// XmlFilterAdaptor::importImpl() mandates URL, even if it's empty.
comphelper::makePropertyValue("URL", OUString()),
comphelper::makePropertyValue("InputStream", xStream),
};
if (xFilter->filter(aImportArguments))
return xComponent;
else
{
xComponent->dispose();
return uno::Reference<lang::XComponent>();
}
}
}
VCL_DLLPUBLIC bool ImportPDF(SvStream& rStream, Graphic& rGraphic)
{
uno::Reference<lang::XComponent> xComponent = importIntoDraw(rStream);
if (!xComponent.is())
return false;
comphelper::ScopeGuard aGuard([&xComponent]()
{
xComponent->dispose();
});
// Get the preview of the first page.
uno::Reference<drawing::XDrawPagesSupplier> xDrawPagesSupplier(xComponent, uno::UNO_QUERY);
uno::Reference<drawing::XDrawPages> xDrawPages = xDrawPagesSupplier->getDrawPages();
if (xDrawPages->getCount() <= 0)
return false;
uno::Reference<beans::XPropertySet> xFirstPage(xDrawPages->getByIndex(0), uno::UNO_QUERY);
uno::Sequence<sal_Int8> aSequence;
if (!(xFirstPage->getPropertyValue("Preview") >>= aSequence))
return false;
if (!aSequence.hasElements())
return false;
// Convert it into a GDIMetaFile.
SvMemoryStream aPreviewStream(aSequence.getLength());
aPreviewStream.WriteBytes(aSequence.getArray(), aSequence.getLength());
aPreviewStream.Seek(0);
GDIMetaFile aMtf;
if (!ConvertWMFToGDIMetaFile(aPreviewStream, aMtf))
return false;
rGraphic = aMtf;
// Save the original PDF stream for later use.
rStream.Seek(STREAM_SEEK_TO_END);
uno::Sequence<sal_Int8> aPdfData(rStream.Tell());
rStream.Seek(STREAM_SEEK_TO_BEGIN);
rStream.ReadBytes(aPdfData.getArray(), aPdfData.getLength());
rGraphic.setPdfData(aPdfData);
return true;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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