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