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Diffstat (limited to 'canvas/source/tools/surfaceproxy.cxx')
| -rw-r--r-- | canvas/source/tools/surfaceproxy.cxx | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/canvas/source/tools/surfaceproxy.cxx b/canvas/source/tools/surfaceproxy.cxx new file mode 100644 index 000000000000..f4c31d4a2dc6 --- /dev/null +++ b/canvas/source/tools/surfaceproxy.cxx @@ -0,0 +1,182 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * 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; + } +} |