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Diffstat (limited to 'emfio/source/emfuno/xemfparser.cxx')
| -rw-r--r-- | emfio/source/emfuno/xemfparser.cxx | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/emfio/source/emfuno/xemfparser.cxx b/emfio/source/emfuno/xemfparser.cxx new file mode 100644 index 000000000..88a115f79 --- /dev/null +++ b/emfio/source/emfuno/xemfparser.cxx @@ -0,0 +1,237 @@ +/* -*- 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/XEmfParser.hpp> +#include <com/sun/star/lang/XServiceInfo.hpp> +#include <cppuhelper/implbase2.hxx> +#include <cppuhelper/supportsservice.hxx> +#include <comphelper/sequence.hxx> +#include <drawinglayer/primitive2d/baseprimitive2d.hxx> + +#include <vcl/outdev.hxx> +#include <vcl/svapp.hxx> +#include <vcl/wmfexternal.hxx> +#include <basegfx/matrix/b2dhommatrixtools.hxx> +#include <unotools/ucbstreamhelper.hxx> +#include <drawinglayer/primitive2d/metafileprimitive2d.hxx> +#include <sal/log.hxx> + +#include <wmfreader.hxx> +#include <emfreader.hxx> + +#include "xemfparser.hxx" + +using namespace ::com::sun::star; + +namespace emfio::emfreader +{ + namespace { + + class XEmfParser : public ::cppu::WeakAggImplHelper2< graphic::XEmfParser, lang::XServiceInfo > + { + private: + uno::Reference< uno::XComponentContext > context_; + basegfx::B2DTuple maSizeHint; + + protected: + public: + explicit XEmfParser( + uno::Reference< uno::XComponentContext > const & context); + XEmfParser(const XEmfParser&) = delete; + XEmfParser& operator=(const XEmfParser&) = delete; + + // XEmfParser + virtual uno::Sequence< uno::Reference< ::graphic::XPrimitive2D > > SAL_CALL getDecomposition( + const uno::Reference< ::io::XInputStream >& xEmfStream, + const OUString& aAbsolutePath, + const uno::Sequence< ::beans::PropertyValue >& rProperties) override; + void SAL_CALL setSizeHint(const geometry::RealPoint2D& rSize) 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; + }; + + } +} // end of namespace emfio::emfreader + +// uno functions +namespace emfio::emfreader +{ + uno::Sequence< OUString > XEmfParser_getSupportedServiceNames() + { + return uno::Sequence< OUString > { "com.sun.star.graphic.EmfTools" }; + } + + OUString XEmfParser_getImplementationName() + { + return "emfio::emfreader::XEmfParser"; + } + + uno::Reference< uno::XInterface > XEmfParser_createInstance(const uno::Reference< uno::XComponentContext >& context) + { + return static_cast< ::cppu::OWeakObject* >(new XEmfParser(context)); + } +} // end of namespace emfio::emfreader + +namespace emfio::emfreader +{ + XEmfParser::XEmfParser( + uno::Reference< uno::XComponentContext > const & context): + context_(context) + { + } + + uno::Sequence< uno::Reference< ::graphic::XPrimitive2D > > XEmfParser::getDecomposition( + const uno::Reference< ::io::XInputStream >& xEmfStream, + const OUString& /*aAbsolutePath*/, + const uno::Sequence< ::beans::PropertyValue >& rProperties) + { + drawinglayer::primitive2d::Primitive2DContainer aRetval; + + if (xEmfStream.is()) + { + WmfExternal aExternalHeader; + const bool bExternalHeaderUsed(aExternalHeader.setSequence(rProperties)); + + // rough check - import and conv to primitive + GDIMetaFile aMtf; + std::unique_ptr<SvStream> pStream(::utl::UcbStreamHelper::CreateStream(xEmfStream)); + sal_uInt32 nOrgPos = pStream->Tell(); + + SvStreamEndian nOrigNumberFormat = pStream->GetEndian(); + pStream->SetEndian(SvStreamEndian::LITTLE); + + sal_uInt32 nMetaType(0); + if (checkSeek(*pStream, 0x28)) + pStream->ReadUInt32(nMetaType); + pStream->Seek(nOrgPos); + + bool bReadError(false); + + try + { + if (nMetaType == 0x464d4520) + { + // read and get possible failure/error, ReadEnhWMF returns success + emfio::EmfReader aReader(*pStream, aMtf); + aReader.SetSizeHint(maSizeHint); + bReadError = !aReader.ReadEnhWMF(); + } + else + { + emfio::WmfReader(*pStream, aMtf, bExternalHeaderUsed ? &aExternalHeader : nullptr).ReadWMF(); + + // Need to check for ErrCode at stream to not lose former work. + // This may contain important information and will behave the + // same as before. When we have an error, do not create content + ErrCode aErrCode(pStream->GetError()); + + bReadError = aErrCode.IsError(); + } + } + catch (...) + { + bReadError = true; + } + + pStream->SetEndian(nOrigNumberFormat); + + if (!bReadError) + { + Size aSize(aMtf.GetPrefSize()); + + if (aMtf.GetPrefMapMode().GetMapUnit() == MapUnit::MapPixel) + { + aSize = Application::GetDefaultDevice()->PixelToLogic(aSize, MapMode(MapUnit::Map100thMM)); + } + else + { + aSize = OutputDevice::LogicToLogic(aSize, aMtf.GetPrefMapMode(), MapMode(MapUnit::Map100thMM)); + } + + // use size + const basegfx::B2DHomMatrix aMetafileTransform( + basegfx::utils::createScaleB2DHomMatrix( + aSize.Width(), + aSize.Height())); + + // ...and create a single MetafilePrimitive2D containing the Metafile. + // CAUTION: Currently, ReadWindowMetafile uses the local VectorGraphicData + // and a MetafileAccessor hook at the MetafilePrimitive2D inside of + // ImpGraphic::ImplGetGDIMetaFile to get the Metafile. Thus, the first + // and only primitive in this case *has to be* a MetafilePrimitive2D. + aRetval.push_back( + new drawinglayer::primitive2d::MetafilePrimitive2D( + aMetafileTransform, + aMtf)); + + // // force to use decomposition directly to get rid of the metafile + // const css::uno::Sequence< css::beans::PropertyValue > aViewParameters; + // drawinglayer::primitive2d::MetafilePrimitive2D aMetafilePrimitive2D( + // aMetafileTransform, + // aMtf); + // aRetval.append(aMetafilePrimitive2D.getDecomposition(aViewParameters)); + + // if (aRetval.empty()) + // { + // // for test, just create some graphic data that will get visualized + // const basegfx::B2DRange aRange(1000, 1000, 5000, 5000); + // const basegfx::BColor aColor(1.0, 0.0, 0.0); + // const basegfx::B2DPolygon aOutline(basegfx::utils::createPolygonFromRect(aRange)); + // + // aRetval.push_back(new drawinglayer::primitive2d::PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aOutline), aColor)); + // } + } + } + else + { + SAL_WARN("emfio", "Invalid stream (!)"); + } + + return comphelper::containerToSequence(aRetval); + } + + void XEmfParser::setSizeHint(const geometry::RealPoint2D& rSize) + { + maSizeHint.setX(rSize.X); + maSizeHint.setY(rSize.Y); + } + + OUString SAL_CALL XEmfParser::getImplementationName() + { + return XEmfParser_getImplementationName(); + } + + sal_Bool SAL_CALL XEmfParser::supportsService(const OUString& rServiceName) + { + return cppu::supportsService(this, rServiceName); + } + + uno::Sequence< OUString > SAL_CALL XEmfParser::getSupportedServiceNames() + { + return XEmfParser_getSupportedServiceNames(); + } + +} // end of namespace emfio::emfreader + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |