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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
*
* $RCSfile$
*
* $Revision$
*
* 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 "timer.hxx"
#include <vector>
#include <list>
#include <vcl/timer.hxx>
#include <com/sun/star/awt/XLayoutContainer.hpp>
namespace layoutimpl
{
using namespace ::com::sun::star;
class AllocateTimer : public Timer
{
typedef std::list< uno::Reference< awt::XLayoutContainer > > ContainerList;
ContainerList mxContainers;
uno::Reference< awt::XLayoutContainer > mxLastAdded;
public:
AllocateTimer()
{
// timer set to 0 -- just process it as soon as it gets idle
SetTimeout( 0 );
}
static inline bool isParentOf( uno::Reference< awt::XLayoutContainer > xParent,
uno::Reference< awt::XLayoutContainer > xWidget )
{
while ( xWidget.is() )
{
if ( xWidget == xParent )
return true;
xWidget = uno::Reference< awt::XLayoutContainer >( xWidget->getParent(), uno::UNO_QUERY );
}
return false;
}
static inline void eraseChildren( ContainerList::iterator &it, ContainerList &list )
{
ContainerList::iterator jt = list.begin();
while ( jt != list.end() )
{
if ( it != jt && isParentOf( *it, *jt ) )
jt = list.erase( jt );
else
jt++;
}
}
static inline bool isContainerDamaged( uno::Reference< awt::XLayoutContainer > xContainer )
{
uno::Reference< awt::XLayoutConstrains > xConstrains( xContainer, uno::UNO_QUERY );
awt::Size lastReq( xContainer->getRequestedSize() );
awt::Size curReq( xConstrains->getMinimumSize() );
return lastReq.Width != curReq.Width || lastReq.Height != curReq.Height;
}
void add( const uno::Reference< awt::XLayoutContainer > &xContainer )
{
// small optimization
if ( mxLastAdded == xContainer )
return;
mxLastAdded = xContainer;
mxContainers.push_back( xContainer );
}
virtual void Timeout()
{
mxLastAdded = uno::Reference< awt::XLayoutContainer >();
// 1. remove duplications and children
for ( ContainerList::iterator it = mxContainers.begin();
it != mxContainers.end(); it++ )
eraseChildren( it, mxContainers );
// 2. check damage extent
for ( ContainerList::iterator it = mxContainers.begin();
it != mxContainers.end(); it++ )
{
uno::Reference< awt::XLayoutContainer > xContainer = *it;
while ( xContainer->getParent().is() && isContainerDamaged( xContainer ) )
{
xContainer = uno::Reference< awt::XLayoutContainer >(
xContainer->getParent(), uno::UNO_QUERY );
}
if ( *it != xContainer )
{
// 2.2 replace it with parent
*it = xContainer;
// 2.3 remove children of new parent
eraseChildren( it, mxContainers );
}
}
// 3. force re-calculations
for ( ContainerList::iterator it = mxContainers.begin();
it != mxContainers.end(); it++ )
(*it)->allocateArea( (*it)->getAllocatedArea() );
}
};
static void AddResizeTimeout( const uno::Reference< awt::XLayoutContainer > &xCont )
{
static AllocateTimer timer;
timer.add( xCont );
timer.Start();
}
LayoutUnit::LayoutUnit() : LayoutUnit_Base()
{
}
void SAL_CALL LayoutUnit::queueResize( const uno::Reference< awt::XLayoutContainer > &xContainer )
throw( uno::RuntimeException )
{
AddResizeTimeout( xContainer );
}
}
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