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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 "EPUBExportFilter.hxx"
#include <libepubgen/EPUBTextGenerator.h>
#include <libepubgen/libepubgen-decls.h>
#include <com/sun/star/beans/PropertyAttribute.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/frame/XModel.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/text/XPageCursor.hpp>
#include <com/sun/star/text/XTextViewCursorSupplier.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/view/XRenderable.hpp>
#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
#include <comphelper/genericpropertyset.hxx>
#include <comphelper/propertysetinfo.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <svtools/DocumentToGraphicRenderer.hxx>
#include "exp/xmlimp.hxx"
#include "EPUBPackage.hxx"
using namespace com::sun::star;
namespace writerperfect
{
EPUBExportFilter::EPUBExportFilter(const uno::Reference<uno::XComponentContext> &xContext)
: mxContext(xContext)
{
}
sal_Int32 EPUBExportFilter::GetDefaultVersion()
{
return 30;
}
sal_Int32 EPUBExportFilter::GetDefaultSplitMethod()
{
return libepubgen::EPUB_SPLIT_METHOD_HEADING;
}
sal_Int32 EPUBExportFilter::GetDefaultLayoutMethod()
{
return libepubgen::EPUB_LAYOUT_METHOD_REFLOWABLE;
}
sal_Bool EPUBExportFilter::filter(const uno::Sequence<beans::PropertyValue> &rDescriptor)
{
sal_Int32 nVersion = EPUBExportFilter::GetDefaultVersion();
sal_Int32 nSplitMethod = EPUBExportFilter::GetDefaultSplitMethod();
sal_Int32 nLayoutMethod = EPUBExportFilter::GetDefaultLayoutMethod();
uno::Sequence<beans::PropertyValue> aFilterData;
OUString aFilterOptions;
for (sal_Int32 i = 0; i < rDescriptor.getLength(); ++i)
{
if (rDescriptor[i].Name == "FilterData")
rDescriptor[i].Value >>= aFilterData;
else if (rDescriptor[i].Name == "FilterOptions")
rDescriptor[i].Value >>= aFilterOptions;
}
if (aFilterOptions == "layout=fixed")
nLayoutMethod = libepubgen::EPUB_LAYOUT_METHOD_FIXED;
for (sal_Int32 i = 0; i < aFilterData.getLength(); ++i)
{
if (aFilterData[i].Name == "EPUBVersion")
aFilterData[i].Value >>= nVersion;
else if (aFilterData[i].Name == "EPUBSplitMethod")
aFilterData[i].Value >>= nSplitMethod;
else if (aFilterData[i].Name == "EPUBLayoutMethod")
aFilterData[i].Value >>= nLayoutMethod;
}
// Build the export filter chain: the package has direct access to the ZIP
// file, the flat ODF filter has access to the doc model, everything else
// is in-between.
EPUBPackage aPackage(mxContext, rDescriptor);
libepubgen::EPUBTextGenerator aGenerator(&aPackage, nVersion);
aGenerator.setOption(libepubgen::EPUB_GENERATOR_OPTION_SPLIT, nSplitMethod);
aGenerator.setOption(libepubgen::EPUB_GENERATOR_OPTION_LAYOUT, nLayoutMethod);
OUString aSourceURL;
uno::Reference<frame::XModel> xSourceModel(mxSourceDocument, uno::UNO_QUERY);
if (xSourceModel.is())
aSourceURL = xSourceModel->getURL();
std::vector<std::pair<uno::Sequence<sal_Int8>, Size>> aPageMetafiles;
if (nLayoutMethod == libepubgen::EPUB_LAYOUT_METHOD_FIXED)
CreateMetafiles(aPageMetafiles);
uno::Reference<xml::sax::XDocumentHandler> xExportHandler(new exp::XMLImport(mxContext, aGenerator, aSourceURL, rDescriptor, aPageMetafiles));
uno::Reference<lang::XInitialization> xInitialization(mxContext->getServiceManager()->createInstanceWithContext("com.sun.star.comp.Writer.XMLOasisExporter", mxContext), uno::UNO_QUERY);
// A subset of parameters are passed in as a property set.
comphelper::PropertyMapEntry const aInfoMap[] =
{
{OUString("BaseURI"), 0, cppu::UnoType<OUString>::get(), beans::PropertyAttribute::MAYBEVOID, 0},
{OUString(), 0, uno::Type(), 0, 0}
};
uno::Reference<beans::XPropertySet> xInfoSet(comphelper::GenericPropertySet_CreateInstance(new comphelper::PropertySetInfo(aInfoMap)));
xInfoSet->setPropertyValue("BaseURI", uno::makeAny(aSourceURL));
xInitialization->initialize({uno::makeAny(xExportHandler), uno::makeAny(xInfoSet)});
uno::Reference<document::XExporter> xExporter(xInitialization, uno::UNO_QUERY);
xExporter->setSourceDocument(mxSourceDocument);
uno::Reference<document::XFilter> xFilter(xInitialization, uno::UNO_QUERY);
return xFilter->filter(rDescriptor);
}
void EPUBExportFilter::CreateMetafiles(std::vector<std::pair<uno::Sequence<sal_Int8>, Size>> &rPageMetafiles)
{
DocumentToGraphicRenderer aRenderer(mxSourceDocument, /*bSelectionOnly=*/false);
uno::Reference<frame::XModel> xModel(mxSourceDocument, uno::UNO_QUERY);
if (!xModel.is())
return;
uno::Reference<text::XTextViewCursorSupplier> xTextViewCursorSupplier(xModel->getCurrentController(), uno::UNO_QUERY);
if (!xTextViewCursorSupplier.is())
return;
uno::Reference<text::XPageCursor> xCursor(xTextViewCursorSupplier->getViewCursor(), uno::UNO_QUERY);
if (!xCursor.is())
return;
xCursor->jumpToLastPage();
sal_Int16 nPages = xCursor->getPage();
for (sal_Int16 nPage = 1; nPage <= nPages; ++nPage)
{
Size aDocumentSizePixel = aRenderer.getDocumentSizeInPixels(nPage);
Size aLogic = aRenderer.getDocumentSizeIn100mm(nPage);
// Get the CSS pixel size of the page (mm100 -> pixel using 96 DPI, independent from system DPI).
Size aCss(static_cast<double>(aLogic.getWidth()) / 26.4583, static_cast<double>(aLogic.getHeight()) / 26.4583);
Graphic aGraphic = aRenderer.renderToGraphic(nPage, aDocumentSizePixel, aCss, COL_WHITE);
GDIMetaFile &rGDIMetaFile = const_cast<GDIMetaFile &>(aGraphic.GetGDIMetaFile());
// Set preferred map unit and size on the metafile, so the SVG size
// will be correct in MM.
MapMode aMapMode;
aMapMode.SetMapUnit(MapUnit::Map100thMM);
rGDIMetaFile.SetPrefMapMode(aMapMode);
rGDIMetaFile.SetPrefSize(aLogic);
SvMemoryStream aMemoryStream;
rGDIMetaFile.Write(aMemoryStream);
uno::Sequence<sal_Int8> aSequence(static_cast<const sal_Int8 *>(aMemoryStream.GetData()), aMemoryStream.Tell());
rPageMetafiles.emplace_back(aSequence, aCss);
}
}
void EPUBExportFilter::cancel()
{
}
void EPUBExportFilter::setSourceDocument(const uno::Reference<lang::XComponent> &xDocument)
{
mxSourceDocument = xDocument;
}
OUString EPUBExportFilter::getImplementationName()
{
return OUString("com.sun.star.comp.Writer.EPUBExportFilter");
}
sal_Bool EPUBExportFilter::supportsService(const OUString &rServiceName)
{
return cppu::supportsService(this, rServiceName);
}
uno::Sequence<OUString> EPUBExportFilter::getSupportedServiceNames()
{
uno::Sequence<OUString> aRet =
{
OUString("com.sun.star.document.ExportFilter")
};
return aRet;
}
extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface *com_sun_star_comp_Writer_EPUBExportFilter_get_implementation(uno::XComponentContext *pContext, uno::Sequence<uno::Any> const &)
{
return cppu::acquire(new EPUBExportFilter(pContext));
}
} // namespace writerperfect
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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