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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 "CanvasUpdateRequester.hxx"
#include <vcl/svapp.hxx>
#include <com/sun/star/lang/XComponent.hpp>
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
namespace sd { namespace presenter {
//===== CanvasUpdateRequester::Deleter ========================================
class CanvasUpdateRequester::Deleter
{
public:
void operator() (CanvasUpdateRequester* pObject) { delete pObject; }
};
//===== CanvasUpdateRequester =================================================
CanvasUpdateRequester::RequesterMap CanvasUpdateRequester::maRequesterMap;
std::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.
std::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(false)
{
Reference<lang::XComponent> xComponent (mxCanvas, UNO_QUERY);
if (xComponent.is())
{
//xComponent->addEventListener(this);
}
}
CanvasUpdateRequester::~CanvasUpdateRequester()
{
if (mnUserEventId != 0)
Application::RemoveUserEvent(mnUserEventId);
}
void CanvasUpdateRequester::RequestUpdate (const bool bUpdateAll)
{
if (mnUserEventId == 0)
{
mbUpdateFlag = bUpdateAll;
mnUserEventId = Application::PostUserEvent(LINK(this, CanvasUpdateRequester, Callback));
}
else
{
mbUpdateFlag |= bUpdateAll;
}
}
IMPL_LINK_NOARG_TYPED(CanvasUpdateRequester, Callback, void*, void)
{
mnUserEventId = 0;
if (mxCanvas.is())
{
mxCanvas->updateScreen(mbUpdateFlag);
mbUpdateFlag = false;
}
}
} } // end of namespace ::sd::presenter
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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