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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: page.hxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: kz $ $Date: 2005-11-02 12:54:04 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef INCLUDED_CANVAS_PAGE_HXX
#define INCLUDED_CANVAS_PAGE_HXX
#ifndef _BGFX_VECTOR_B2ISIZE_HXX
#include <basegfx/vector/b2isize.hxx>
#endif
#ifndef _BGFX_RANGE_B2IRECTANGLE_HXX
#include <basegfx/range/b2irectangle.hxx>
#endif
#ifndef INCLUDED_CANVAS_ICOLORBUFFER_HXX
#include <canvas/rendering/icolorbuffer.hxx>
#endif
#ifndef INCLUDED_CANVAS_IRENDERMODULE_HXX
#include <canvas/rendering/irendermodule.hxx>
#endif
#ifndef INCLUDED_CANVAS_ISURFACE_HXX
#include <canvas/rendering/isurface.hxx>
#endif
#include <list>
#include <vector>
#include <boost/shared_ptr.hpp>
#include "surfacerect.hxx"
namespace canvas
{
class PageFragment;
typedef ::boost::shared_ptr< PageFragment > FragmentSharedPtr;
/** One page of IRenderModule-provided texture space
*/
class Page
{
public:
Page( const IRenderModuleSharedPtr& rRenderModule );
FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
bool nakedFragment( const FragmentSharedPtr& pFragment );
void free( const FragmentSharedPtr& pFragment );
const ISurfaceSharedPtr& getSurface() const { return mpSurface; }
bool isValid() const;
void validate();
private:
typedef std::list<FragmentSharedPtr> FragmentContainer_t;
IRenderModuleSharedPtr mpRenderModule;
ISurfaceSharedPtr mpSurface;
FragmentContainer_t mpFragments;
bool insert( SurfaceRect& r );
bool isValidLocation( const SurfaceRect& r ) const;
};
typedef ::boost::shared_ptr< Page > PageSharedPtr;
/** A part of a page, which gets allocated to a surface
*/
class PageFragment
{
public:
PageFragment( const SurfaceRect& r,
Page* pPage ) :
mpPage(pPage),
maRect(r),
mpBuffer(),
maSourceOffset()
{
}
/// Creates a 'naked' fragment.
PageFragment( const ::basegfx::B2ISize& rSize ) :
mpPage(NULL),
maRect(rSize),
mpBuffer(),
maSourceOffset()
{
}
bool isNaked() const { return (mpPage == NULL); }
const SurfaceRect& getRect() const { return maRect; }
const ::basegfx::B2IPoint& getPos() const { return maRect.maPos; }
const ::basegfx::B2ISize& getSize() const { return maRect.maSize; }
void setColorBuffer( const IColorBufferSharedPtr& pColorBuffer ) { mpBuffer=pColorBuffer; }
void setSourceOffset( const ::basegfx::B2IPoint& rOffset ) { maSourceOffset=rOffset; }
void setPage( Page* pPage ) { mpPage=pPage; }
void free( const FragmentSharedPtr& pFragment )
{
if(mpPage)
mpPage->free(pFragment);
mpPage=NULL;
}
bool select( bool bRefresh )
{
// request was made to select this fragment,
// but this fragment has not been located on any
// of the available pages, we need to hurry now.
if(!(mpPage))
return false;
ISurfaceSharedPtr pSurface(mpPage->getSurface());
// select this surface before wiping the contents
// since a specific implementation could trigger
// a rendering operation here...
if(!(pSurface->selectTexture()))
return false;
// call refresh() if requested, otherwise we're up to date...
return bRefresh ? refresh() : true;
}
bool refresh()
{
if(!(mpPage))
return false;
ISurfaceSharedPtr pSurface(mpPage->getSurface());
return pSurface->update( maRect.maPos,
::basegfx::B2IRectangle(
maSourceOffset,
maSourceOffset + maRect.maSize ),
*mpBuffer );
}
private:
Page* mpPage;
SurfaceRect maRect;
IColorBufferSharedPtr mpBuffer;
::basegfx::B2IPoint maSourceOffset;
};
}
#endif
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