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Diffstat (limited to 'svgio/source/svguno/xsvgparser.cxx')
| -rw-r--r-- | svgio/source/svguno/xsvgparser.cxx | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/svgio/source/svguno/xsvgparser.cxx b/svgio/source/svguno/xsvgparser.cxx new file mode 100644 index 0000000000..8c216821b4 --- /dev/null +++ b/svgio/source/svguno/xsvgparser.cxx @@ -0,0 +1,209 @@ +/* -*- 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/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <sal/config.h> + +#include <com/sun/star/graphic/XSvgParser.hpp> +#include <com/sun/star/lang/XServiceInfo.hpp> +#include <com/sun/star/lang/XInitialization.hpp> +#include <comphelper/processfactory.hxx> +#include <cppuhelper/implbase.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <com/sun/star/xml/sax/XParser.hpp> +#include <com/sun/star/xml/sax/Parser.hpp> +#include <com/sun/star/xml/sax/InputSource.hpp> +#include <svgdocumenthandler.hxx> +#include <comphelper/diagnose_ex.hxx> +#include <rtl/ref.hxx> +#include <tools/stream.hxx> +#include <unotools/streamwrap.hxx> + +#include <svgvisitor.hxx> +#include <utility> + +using namespace ::com::sun::star; + +namespace svgio::svgreader +{ + namespace { + + class XSvgParser : public ::cppu::WeakImplHelper< graphic::XSvgParser, lang::XServiceInfo > + { + private: + std::shared_ptr<SvgDrawVisitor> mpVisitor; + + uno::Reference< uno::XComponentContext > context_; + bool parseSvgXML(uno::Reference<io::XInputStream> const & xSVGStream, + uno::Reference<xml::sax::XDocumentHandler> const & xSvgDocHdl); + public: + explicit XSvgParser( + uno::Reference< uno::XComponentContext > context); + XSvgParser(const XSvgParser&) = delete; + XSvgParser& operator=(const XSvgParser&) = delete; + + // XSvgParser + virtual uno::Sequence< uno::Reference< ::graphic::XPrimitive2D > > SAL_CALL getDecomposition( + const uno::Reference< ::io::XInputStream >& xSVGStream, + const OUString& aAbsolutePath) override; + + virtual uno::Any SAL_CALL getDrawCommands( + uno::Reference<io::XInputStream> const & xSvgStream, + const OUString& aAbsolutePath) override; + + // XServiceInfo + virtual OUString SAL_CALL getImplementationName() override; + virtual sal_Bool SAL_CALL supportsService(const OUString&) override; + virtual uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override; + }; + + } + + XSvgParser::XSvgParser( + uno::Reference< uno::XComponentContext > context): + context_(std::move(context)) + { + } + + bool XSvgParser::parseSvgXML(uno::Reference<io::XInputStream> const & xSVGStream, uno::Reference<xml::sax::XDocumentHandler> const & xSvgDocHdl) + { + try + { + // prepare ParserInputSource + xml::sax::InputSource myInputSource; + myInputSource.aInputStream = xSVGStream; + + // get parser + uno::Reference< xml::sax::XParser > xParser( + xml::sax::Parser::create(context_)); + // fdo#60471 need to enable internal entities because + // certain ... popular proprietary products write SVG files + // that use entities to define XML namespaces. + uno::Reference<lang::XInitialization> const xInit(xParser, + uno::UNO_QUERY_THROW); + uno::Sequence<uno::Any> args{ uno::Any(OUString("DoSmeplease")) }; + xInit->initialize(args); + + // connect parser and filter + xParser->setDocumentHandler(xSvgDocHdl); + + // finally, parse the stream to a hierarchy of + // SVGGraphicPrimitive2D which will be embedded to the + // primitive sequence. Their decompositions will in the + // end create local low-level primitives, thus SVG will + // be processable from all our processors + xParser->parseStream(myInputSource); + } + catch(const uno::Exception&) + { + TOOLS_INFO_EXCEPTION( "svg", "Parse error"); + return false; + } + + return true; + } + + uno::Sequence< uno::Reference< ::graphic::XPrimitive2D > > XSvgParser::getDecomposition( + const uno::Reference< ::io::XInputStream >& xSVGStream, + const OUString& aAbsolutePath ) + { + drawinglayer::primitive2d::Primitive2DContainer aRetval; + + if(xSVGStream.is()) + { + // local document handler + rtl::Reference<SvgDocHdl> pSvgDocHdl = new SvgDocHdl(aAbsolutePath); + parseSvgXML(xSVGStream, pSvgDocHdl); + + // decompose to primitives + for(std::unique_ptr<SvgNode> const & pCandidate : pSvgDocHdl->getSvgDocument().getSvgNodeVector()) + { + if (Display::None != pCandidate->getDisplay()) + { + pCandidate->decomposeSvgNode(aRetval, false); + } + } + } + else + { + OSL_ENSURE(false, "Invalid stream (!)"); + } + + return aRetval.toSequence(); + } + + uno::Any SAL_CALL XSvgParser::getDrawCommands( + uno::Reference<io::XInputStream> const & xSvgStream, + const OUString& aAbsolutePath) + { + uno::Any aAnyResult; + + if (!xSvgStream.is()) + return aAnyResult; + + rtl::Reference<SvgDocHdl> pSvgDocHdl = new SvgDocHdl(aAbsolutePath); + parseSvgXML(xSvgStream, pSvgDocHdl); + + // decompose to primitives + for (std::unique_ptr<SvgNode> const & pCandidate : pSvgDocHdl->getSvgDocument().getSvgNodeVector()) + { + if (Display::None != pCandidate->getDisplay()) + { + mpVisitor = std::make_shared<SvgDrawVisitor>(); + pCandidate->accept(*mpVisitor); + std::shared_ptr<gfx::DrawRoot> pDrawRoot(mpVisitor->getDrawRoot()); + sal_uInt64 nPointer = reinterpret_cast<sal_uInt64>(pDrawRoot.get()); + aAnyResult <<= sal_uInt64(nPointer); + } + } + + return aAnyResult; + } + + OUString SAL_CALL XSvgParser::getImplementationName() + { + return "svgio::svgreader::XSvgParser"; + } + + sal_Bool SAL_CALL XSvgParser::supportsService(const OUString& rServiceName) + { + return cppu::supportsService(this, rServiceName); + } + + uno::Sequence< OUString > SAL_CALL XSvgParser::getSupportedServiceNames() + { + return { "com.sun.star.graphic.SvgTools" }; + } + +} // end of namespace svgio::svgreader + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface* +svgio_XSvgParser_get_implementation( + css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&) +{ + return cppu::acquire(new svgio::svgreader::XSvgParser(context)); +} + +extern "C" bool TestImportSVG(SvStream& rStream) +{ + css::uno::Reference<css::io::XInputStream> xStream(new utl::OInputStreamWrapper(rStream)); + rtl::Reference<svgio::svgreader::XSvgParser> xSvgParser(new svgio::svgreader::XSvgParser(comphelper::getProcessComponentContext())); + return xSvgParser->getDecomposition(xStream, OUString()).getLength() != 0; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |