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/**************************************************************
*
* 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
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the 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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