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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/.
*
* 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 <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 <comphelper/sequenceashashmap.hxx>
#include <wmfreader.hxx>
#include <emfreader.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;
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;
};
}
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));
bool bEnableEMFPlus = true;
comphelper::SequenceAsHashMap aMap(rProperties);
auto it = aMap.find("EMFPlusEnable");
if (it != aMap.end())
{
bool bValue;
if (it->second >>= bValue)
{
bEnableEMFPlus = bValue;
}
}
// 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);
if (!bEnableEMFPlus)
{
aReader.SetEnableEMFPlus(bEnableEMFPlus);
}
bReadError = !aReader.ReadEnhWMF();
}
else
{
emfio::WmfReader aReader(*pStream, aMtf, bExternalHeaderUsed ? &aExternalHeader : nullptr);
if (!bEnableEMFPlus)
aReader.SetEnableEMFPlus(bEnableEMFPlus);
aReader.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 aRetval.toSequence();
}
void XEmfParser::setSizeHint(const geometry::RealPoint2D& rSize)
{
maSizeHint.setX(rSize.X);
maSizeHint.setY(rSize.Y);
}
OUString SAL_CALL XEmfParser::getImplementationName()
{
return "emfio::emfreader::XEmfParser";
}
sal_Bool SAL_CALL XEmfParser::supportsService(const OUString& rServiceName)
{
return cppu::supportsService(this, rServiceName);
}
uno::Sequence< OUString > SAL_CALL XEmfParser::getSupportedServiceNames()
{
return { "com.sun.star.graphic.EmfTools" };
}
} // end of namespace emfio::emfreader
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
emfio_emfreader_XEmfParser_get_implementation(
css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& )
{
return cppu::acquire(new emfio::emfreader::XEmfParser(context));
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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