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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: page.cxx,v $
* $Revision: 1.5 $
*
* 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.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"
#include <boost/bind.hpp>
#include "page.hxx"
namespace canvas
{
Page::Page( const IRenderModuleSharedPtr &rRenderModule ) :
mpRenderModule(rRenderModule),
mpSurface(rRenderModule->createSurface(::basegfx::B2ISize()))
{
}
void Page::validate()
{
if(!(isValid()))
{
::std::for_each( mpFragments.begin(),
mpFragments.end(),
::boost::mem_fn(&PageFragment::refresh));
}
}
bool Page::isValid() const
{
return mpSurface && mpSurface->isValid();
}
FragmentSharedPtr Page::allocateSpace( const ::basegfx::B2ISize& rSize )
{
SurfaceRect rect(rSize);
if(insert(rect))
{
FragmentSharedPtr pFragment(new PageFragment(rect,this));
mpFragments.push_back(pFragment);
return pFragment;
}
return FragmentSharedPtr();
}
bool Page::nakedFragment( const FragmentSharedPtr& pFragment )
{
SurfaceRect rect(pFragment->getSize());
if(insert(rect))
{
pFragment->setPage(this);
mpFragments.push_back(pFragment);
return true;
}
return false;
}
void Page::free( const FragmentSharedPtr& pFragment )
{
// the fragment passes as argument is no longer
// dedicated to this page. either it is about to
// be relocated to some other page or it will
// currently be deleted. in either case, simply
// remove the reference from our internal storage.
FragmentContainer_t::iterator it(
std::remove(
mpFragments.begin(),mpFragments.end(),pFragment));
mpFragments.erase(it,mpFragments.end());
}
bool Page::insert( SurfaceRect& r )
{
const FragmentContainer_t::const_iterator aEnd(mpFragments.end());
FragmentContainer_t::const_iterator it(mpFragments.begin());
while(it != aEnd)
{
const SurfaceRect &rect = (*it)->getRect();
const sal_Int32 x = rect.maPos.getX();
const sal_Int32 y = rect.maPos.getY();
// to avoid interpolation artifacts from other textures,
// one pixel gap between them
const sal_Int32 w = rect.maSize.getX()+1;
const sal_Int32 h = rect.maSize.getY()+1;
// probe location to the right
r.maPos.setX(x+w);
r.maPos.setY(y);
if(isValidLocation(r))
return true;
// probe location at bottom
r.maPos.setX(x);
r.maPos.setY(y+h);
if(isValidLocation(r))
return true;
++it;
}
r.maPos.setX(0);
r.maPos.setY(0);
return isValidLocation(r);
}
bool Page::isValidLocation( const SurfaceRect& r ) const
{
// the rectangle passed as argument has a valid
// location if and only if there's no intersection
// with existing areas.
SurfaceRect aBoundary(mpRenderModule->getPageSize()-basegfx::B2IVector(1,1));
if( !r.inside(aBoundary) )
return false;
const FragmentContainer_t::const_iterator aEnd(mpFragments.end());
FragmentContainer_t::const_iterator it(mpFragments.begin());
while(it != aEnd)
{
if(r.intersection((*it)->getRect()))
return false;
++it;
}
return true;
}
}
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