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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: surfaceproxy.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 <basegfx/polygon/b2dpolygoncutandtouch.hxx>
#include <basegfx/polygon/b2dpolygontriangulator.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include "surfaceproxy.hxx"
namespace canvas
{
//////////////////////////////////////////////////////////////////////////////////
// SurfaceProxy::SurfaceProxy
//////////////////////////////////////////////////////////////////////////////////
SurfaceProxy::SurfaceProxy( const canvas::IColorBufferSharedPtr& pBuffer,
const PageManagerSharedPtr& pPageManager ) :
mpPageManager( pPageManager ),
maSurfaceList(),
mpBuffer( pBuffer )
{
const ::basegfx::B2ISize aImageSize(mpBuffer->getWidth(),mpBuffer->getHeight());
const ::basegfx::B2ISize aPageSize(mpPageManager->getPageSize());
const sal_Int32 aPageSizeX(aPageSize.getX());
const sal_Int32 aPageSizeY(aPageSize.getY());
const sal_Int32 aImageSizeX(aImageSize.getX());
const sal_Int32 aImageSizeY(aImageSize.getY());
// see if the size of the colorbuffer is larger than the size
// of a single page. if this is the case we divide the
// colorbuffer into as many surfaces as we need to get the
// whole area distributed. otherwise (the colorbuffer is
// smaller than the size of a single page) we search for free
// pages or create a new one.
// the incoming image is too large to fit into a single
// page. strategy: we split the image into rectangular
// areas that are as large as the maximum page size
// dictates and follow the strategy for fitting images.
size_t dwNumSurfaces(0);
for(sal_Int32 y=0; y<aImageSizeY; y+=aPageSizeY)
for(sal_Int32 x=0; x<aImageSizeX; x+=aPageSizeX)
++dwNumSurfaces;
maSurfaceList.reserve(dwNumSurfaces);
for(sal_Int32 y=0; y<aImageSizeY; y+=aPageSizeY)
{
for(sal_Int32 x=0; x<aImageSizeX; x+=aPageSizeX)
{
// the current surface is located at the position [x,y]
// and has the size [min(restx,pagesizex),min(resty,pagesizey)
::basegfx::B2IPoint aOffset(x,y);
::basegfx::B2ISize aSize( ::std::min( aImageSize.getX()-x,
aPageSize.getX() ),
::std::min( aImageSize.getY()-y,
aPageSize.getY() ) );
maSurfaceList.push_back(
SurfaceSharedPtr(
new Surface(
mpPageManager,
mpBuffer,
aOffset,
aSize)));
}
}
}
//////////////////////////////////////////////////////////////////////////////////
// SurfaceProxy::setColorBufferDirty
//////////////////////////////////////////////////////////////////////////////////
void SurfaceProxy::setColorBufferDirty()
{
::std::for_each( maSurfaceList.begin(),
maSurfaceList.end(),
::boost::mem_fn(&Surface::setColorBufferDirty));
}
//////////////////////////////////////////////////////////////////////////////////
// SurfaceProxy::draw
//////////////////////////////////////////////////////////////////////////////////
bool SurfaceProxy::draw( double fAlpha,
const ::basegfx::B2DPoint& rPos,
const ::basegfx::B2DHomMatrix& rTransform )
{
::std::for_each( maSurfaceList.begin(),
maSurfaceList.end(),
::boost::bind( &Surface::draw,
_1,
fAlpha,
::boost::cref(rPos),
::boost::cref(rTransform)));
return true;
}
//////////////////////////////////////////////////////////////////////////////////
// SurfaceProxy::draw
//////////////////////////////////////////////////////////////////////////////////
bool SurfaceProxy::draw( double fAlpha,
const ::basegfx::B2DPoint& rPos,
const ::basegfx::B2DRange& rArea,
const ::basegfx::B2DHomMatrix& rTransform )
{
::std::for_each( maSurfaceList.begin(),
maSurfaceList.end(),
::boost::bind(&Surface::drawRectangularArea,
_1,
fAlpha,
::boost::cref(rPos),
::boost::cref(rArea),
::boost::cref(rTransform)));
return true;
}
//////////////////////////////////////////////////////////////////////////////////
// SurfaceProxy::draw
//////////////////////////////////////////////////////////////////////////////////
bool SurfaceProxy::draw( double fAlpha,
const ::basegfx::B2DPoint& rPos,
const ::basegfx::B2DPolyPolygon& rClipPoly,
const ::basegfx::B2DHomMatrix& rTransform )
{
const ::basegfx::B2DPolygon& rTriangulatedPolygon(
::basegfx::triangulator::triangulate(rClipPoly));
#if defined(VERBOSE) && OSL_DEBUG_LEVEL > 0
// dump polygons
OSL_TRACE( "Original clip polygon: %s\n"
"Triangulated polygon: %s\n",
rtl::OUStringToOString(
basegfx::tools::exportToSvgD( rClipPoly ),
RTL_TEXTENCODING_ASCII_US).getStr(),
rtl::OUStringToOString(
basegfx::tools::exportToSvgD(
basegfx::B2DPolyPolygon(rTriangulatedPolygon) ),
RTL_TEXTENCODING_ASCII_US).getStr() );
#endif
::std::for_each( maSurfaceList.begin(),
maSurfaceList.end(),
::boost::bind(&Surface::drawWithClip,
_1,
fAlpha,
::boost::cref(rPos),
::boost::cref(rTriangulatedPolygon),
::boost::cref(rTransform)));
return true;
}
}
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