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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: CanvasUpdateRequester.cxx,v $
*
* $Revision: 1.3 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "precompiled_sd.hxx"
#include "CanvasUpdateRequester.hxx"
#include <vcl/svapp.hxx>
#include <com/sun/star/lang/XComponent.hpp>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using ::rtl::OUString;
namespace sd { namespace presenter {
//===== CanvasUpdateRequester::Deleter ========================================
class CanvasUpdateRequester::Deleter
{
public:
void operator() (CanvasUpdateRequester* pObject) { delete pObject; }
};
//===== CanvasUpdateRequester =================================================
CanvasUpdateRequester::RequesterMap CanvasUpdateRequester::maRequesterMap;
::boost::shared_ptr<CanvasUpdateRequester> CanvasUpdateRequester::Instance (
const Reference<rendering::XSpriteCanvas>& rxSharedCanvas)
{
RequesterMap::const_iterator iRequester;
for (iRequester=maRequesterMap.begin(); iRequester!=maRequesterMap.end(); ++iRequester)
{
if (iRequester->first == rxSharedCanvas)
return iRequester->second;
}
// No requester for the given canvas found. Create a new one.
::boost::shared_ptr<CanvasUpdateRequester> pRequester (
new CanvasUpdateRequester(rxSharedCanvas), Deleter());
maRequesterMap.push_back(RequesterMap::value_type(rxSharedCanvas,pRequester));
return pRequester;
}
CanvasUpdateRequester::CanvasUpdateRequester (
const Reference<rendering::XSpriteCanvas>& rxCanvas)
: mxCanvas(rxCanvas),
mnUserEventId(0),
mbUpdateFlag(sal_False)
{
Reference<lang::XComponent> xComponent (mxCanvas, UNO_QUERY);
if (xComponent.is())
{
//xComponent->addEventListener(this);
}
}
CanvasUpdateRequester::~CanvasUpdateRequester (void)
{
if (mnUserEventId != 0)
Application::RemoveUserEvent(mnUserEventId);
}
void CanvasUpdateRequester::RequestUpdate (const sal_Bool bUpdateAll)
{
if (mnUserEventId == 0)
{
mbUpdateFlag = bUpdateAll;
mnUserEventId = Application::PostUserEvent(LINK(this, CanvasUpdateRequester, Callback));
}
else
{
mbUpdateFlag |= bUpdateAll;
}
}
IMPL_LINK(CanvasUpdateRequester, Callback, void*, EMPTYARG)
{
mnUserEventId = 0;
if (mxCanvas.is())
{
mxCanvas->updateScreen(mbUpdateFlag);
mbUpdateFlag = sal_False;
}
return 0;
}
} } // end of namespace ::sd::presenter
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