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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 <svx/extedit.hxx>
#include <vcl/svapp.hxx>
#include <vcl/graph.hxx>
#include <vcl/GraphicObject.hxx>
#include <vcl/cvtgrf.hxx>
#include <vcl/graphicfilter.hxx>
#include <svx/xoutbmp.hxx>
#include <svx/graphichelper.hxx>
#include <svx/svdpagv.hxx>
#include <svx/svdograf.hxx>
#include <svx/fmview.hxx>
#include <sfx2/viewfrm.hxx>
#include <sfx2/bindings.hxx>
#include <salhelper/thread.hxx>
#include <osl/file.hxx>
#include <osl/thread.hxx>
#include <osl/process.h>
#include <osl/time.h>
#include <svtools/filechangedchecker.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <comphelper/processfactory.hxx>
#include <memory>
#include <com/sun/star/system/SystemShellExecute.hpp>
#include <com/sun/star/system/SystemShellExecuteFlags.hpp>
using namespace css::uno;
using namespace css::system;
ExternalToolEdit::ExternalToolEdit()
{
}
ExternalToolEdit::~ExternalToolEdit()
{
}
void ExternalToolEdit::HandleCloseEvent(ExternalToolEdit* pData)
{
Graphic newGraphic;
//import the temp file image stream into the newGraphic
std::unique_ptr<SvStream> pStream(utl::UcbStreamHelper::CreateStream(pData->m_aFileName, StreamMode::READ));
if(pStream)
{
GraphicConverter::Import(*pStream, newGraphic);
// Now update the Graphic in the shell by re-reading from the newGraphic
pData->Update( newGraphic );
}
}
void ExternalToolEdit::StartListeningEvent()
{
//Start an event listener implemented via VCL timeout
assert(!m_pChecker.get());
m_pChecker.reset(new FileChangedChecker(
m_aFileName, [this] () { return HandleCloseEvent(this); }));
}
// self-destructing thread to make shell execute async
class ExternalToolEditThread
: public ::salhelper::Thread
{
private:
OUString const m_aFileName;
virtual void execute() override;
public:
explicit ExternalToolEditThread(OUString const& rFileName)
: ::salhelper::Thread("ExternalToolEdit")
, m_aFileName(rFileName)
{}
};
void ExternalToolEditThread::execute()
{
try
{
Reference<XSystemShellExecute> const xSystemShellExecute(
SystemShellExecute::create( ::comphelper::getProcessComponentContext()));
xSystemShellExecute->execute(m_aFileName, OUString(),
SystemShellExecuteFlags::URIS_ONLY);
}
catch (Exception const& e)
{
SAL_WARN("svx", "ExternalToolEditThread: " << e);
}
}
void ExternalToolEdit::Edit(GraphicObject const*const pGraphicObject)
{
//Get the graphic from the GraphicObject
const Graphic& aGraphic = pGraphicObject->GetGraphic();
//get the Preferred File Extension for this graphic
OUString fExtension;
GraphicHelper::GetPreferredExtension(fExtension, aGraphic);
//Create the temp File
OUString aTempFileBase;
OUString aTempFileName;
osl::FileBase::RC rc =
osl::FileBase::createTempFile(nullptr, nullptr, &aTempFileBase);
if (osl::FileBase::E_None != rc)
{
SAL_WARN("svx", "ExternalToolEdit::Edit: cannot create temp file");
return;
}
// Move it to a file name with image extension properly set
aTempFileName = aTempFileBase + "." + fExtension;
// FIXME: this is pretty stupid, need a better osl temp file API
rc = osl::File::move(aTempFileBase, aTempFileName);
if (osl::FileBase::E_None != rc)
{
SAL_WARN("svx", "ExternalToolEdit::Edit: cannot move temp file");
return;
}
//Write Graphic to the Temp File
GraphicFilter& rGraphicFilter = GraphicFilter::GetGraphicFilter();
sal_uInt16 nFilter(rGraphicFilter.GetExportFormatNumberForShortName(fExtension));
OUString aFilter(rGraphicFilter.GetExportFormatShortName(nFilter));
// Write the Graphic to the file now
XOutBitmap::WriteGraphic(aGraphic, aTempFileName, aFilter, XOutFlags::UseNativeIfPossible | XOutFlags::DontExpandFilename);
// There is a possibility that sPath extension might have been changed if the
// provided extension is not writable
m_aFileName = aTempFileName;
//Create a thread
rtl::Reference<ExternalToolEditThread> const pThread(
new ExternalToolEditThread(m_aFileName));
pThread->launch();
StartListeningEvent();
}
SdrExternalToolEdit::SdrExternalToolEdit(
FmFormView *const pView, SdrObject *const pObj)
: m_pView(pView)
, m_pObj(pObj)
{
assert(m_pObj && m_pView);
StartListening(*m_pObj->GetModel());
}
void SdrExternalToolEdit::Notify(SfxBroadcaster & rBC, SfxHint const& rHint)
{
SdrHint const*const pSdrHint(dynamic_cast<SdrHint const*>(&rHint));
if (pSdrHint
&& (SdrHintKind::ModelCleared == pSdrHint->GetKind()
|| (pSdrHint->GetObject() == m_pObj
&& SdrHintKind::ObjectRemoved == pSdrHint->GetKind())))
{
m_pView = nullptr;
m_pObj = nullptr;
m_pChecker.reset(); // avoid modifying deleted object
EndListening(rBC);
}
}
void SdrExternalToolEdit::Update(Graphic & rGraphic)
{
assert(m_pObj && m_pView); // timer should be deleted by Notify() too
SdrPageView *const pPageView = m_pView->GetSdrPageView();
if (pPageView)
{
SdrGrafObj *const pNewObj(static_cast<SdrGrafObj*>(m_pObj->Clone()));
assert(pNewObj);
OUString const description =
m_pView->GetDescriptionOfMarkedObjects() + " External Edit";
m_pView->BegUndo(description);
pNewObj->SetGraphicObject(rGraphic);
// set to new object before ReplaceObjectAtView() so that Notify() will
// not delete the running timer and crash
SdrObject *const pOldObj = m_pObj;
m_pObj = pNewObj;
m_pView->ReplaceObjectAtView(pOldObj, *pPageView, pNewObj);
m_pView->EndUndo();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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