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Diffstat (limited to 'sd/source/ui/presenter/CanvasUpdateRequester.cxx')
-rw-r--r-- | sd/source/ui/presenter/CanvasUpdateRequester.cxx | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/sd/source/ui/presenter/CanvasUpdateRequester.cxx b/sd/source/ui/presenter/CanvasUpdateRequester.cxx new file mode 100644 index 000000000000..1019595e0dbc --- /dev/null +++ b/sd/source/ui/presenter/CanvasUpdateRequester.cxx @@ -0,0 +1,131 @@ +/************************************************************************* + * + * 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 |