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Diffstat (limited to 'writerperfect/source/writer/EPUBExportFilter.cxx')
| -rw-r--r-- | writerperfect/source/writer/EPUBExportFilter.cxx | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/writerperfect/source/writer/EPUBExportFilter.cxx b/writerperfect/source/writer/EPUBExportFilter.cxx new file mode 100644 index 000000000..8ac55af19 --- /dev/null +++ b/writerperfect/source/writer/EPUBExportFilter.cxx @@ -0,0 +1,206 @@ +/* -*- 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 <comphelper/genericpropertyset.hxx> +#include <comphelper/propertysetinfo.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <svtools/DocumentToGraphicRenderer.hxx> +#include <vcl/filter/SvmWriter.hxx> +#include <vcl/gdimtf.hxx> +#include <tools/stream.hxx> + +#include "exp/xmlimp.hxx" +#include "EPUBPackage.hxx" + +using namespace com::sun::star; + +namespace writerperfect +{ +EPUBExportFilter::EPUBExportFilter(uno::Reference<uno::XComponentContext> xContext) + : mxContext(std::move(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 (const auto& rProp : rDescriptor) + { + if (rProp.Name == "FilterData") + rProp.Value >>= aFilterData; + else if (rProp.Name == "FilterOptions") + rProp.Value >>= aFilterOptions; + } + + if (aFilterOptions == "layout=fixed") + nLayoutMethod = libepubgen::EPUB_LAYOUT_METHOD_FIXED; + + for (const auto& rProp : std::as_const(aFilterData)) + { + if (rProp.Name == "EPUBVersion") + rProp.Value >>= nVersion; + else if (rProp.Name == "EPUBSplitMethod") + rProp.Value >>= nSplitMethod; + else if (rProp.Name == "EPUBLayoutMethod") + rProp.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<exp::FixedLayoutPage> 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. + static comphelper::PropertyMapEntry const aInfoMap[] + = { { OUString("BaseURI"), 0, cppu::UnoType<OUString>::get(), + beans::PropertyAttribute::MAYBEVOID, 0 } }; + uno::Reference<beans::XPropertySet> xInfoSet( + comphelper::GenericPropertySet_CreateInstance(new comphelper::PropertySetInfo(aInfoMap))); + xInfoSet->setPropertyValue("BaseURI", uno::Any(aSourceURL)); + + xInitialization->initialize({ uno::Any(xExportHandler), uno::Any(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<exp::FixedLayoutPage>& 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, + /*bExtOutDevData=*/true); + auto& 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; + SvmWriter aWriter(aMemoryStream); + aWriter.Write(rGDIMetaFile); + uno::Sequence<sal_Int8> aSequence(static_cast<const sal_Int8*>(aMemoryStream.GetData()), + aMemoryStream.Tell()); + + exp::FixedLayoutPage aPage; + aPage.aMetafile = aSequence; + aPage.aCssPixels = aCss; + aPage.aChapterNames = aRenderer.getChapterNames(); + rPageMetafiles.push_back(aPage); + } +} + +void EPUBExportFilter::cancel() {} + +void EPUBExportFilter::setSourceDocument(const uno::Reference<lang::XComponent>& xDocument) +{ + mxSourceDocument = xDocument; +} + +OUString EPUBExportFilter::getImplementationName() +{ + return "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& /*rSeq*/) +{ + return cppu::acquire(new EPUBExportFilter(pContext)); +} + +} // namespace writerperfect + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |