677 lines
29 KiB
C++
677 lines
29 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: impltools.cxx,v $
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*
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* $Revision: 1.7 $
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*
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* last change: $Author: rt $ $Date: 2005-09-07 23:20:16 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#include <canvas/debug.hxx>
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#ifndef _USE_MATH_DEFINES
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#define _USE_MATH_DEFINES // needed by Visual C++ for math constants
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#endif
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#include <math.h> // M_PI definition
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#ifndef _RTL_LOGFILE_HXX_
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#include <rtl/logfile.hxx>
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#endif
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#ifndef _COM_SUN_STAR_GEOMETRY_REALSIZE2D_HPP__
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#include <com/sun/star/geometry/RealSize2D.hpp>
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#endif
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#ifndef _COM_SUN_STAR_GEOMETRY_REALPOINT2D_HPP__
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#include <com/sun/star/geometry/RealPoint2D.hpp>
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#endif
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#ifndef _COM_SUN_STAR_GEOMETRY_REALRECTANGLE2D_HPP__
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#include <com/sun/star/geometry/RealRectangle2D.hpp>
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#endif
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#ifndef _COM_SUN_STAR_RENDERING_RENDERSTATE_HPP__
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#include <com/sun/star/rendering/RenderState.hpp>
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#endif
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#ifndef _COM_SUN_STAR_RENDERING_XCANVAS_HPP__
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#include <com/sun/star/rendering/XCanvas.hpp>
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#endif
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#ifndef _COM_SUN_STAR_RENDERING_XBITMAP_HPP__
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#include <com/sun/star/rendering/XBitmap.hpp>
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#endif
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#ifndef _COM_SUN_STAR_RENDERING_XPOLYPOLYGON2D_HPP__
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#include <com/sun/star/rendering/XPolyPolygon2D.hpp>
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#endif
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#ifndef _COM_SUN_STAR_GEOMETRY_REALBEZIERSEGMENT2D_HPP__
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#include <com/sun/star/geometry/RealBezierSegment2D.hpp>
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#endif
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#ifndef _COM_SUN_STAR_RENDERING_XINTEGERBITMAP_HPP__
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#include <com/sun/star/rendering/XIntegerBitmap.hpp>
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#endif
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#ifndef _COM_SUN_STAR_LANG_XUNOTUNNEL_HPP_
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#include <com/sun/star/lang/XUnoTunnel.hpp>
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#endif
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#ifndef _SV_SALBTYPE_HXX
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#include <vcl/salbtype.hxx>
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#endif
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#ifndef _SV_BMPACC_HXX
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#include <vcl/bmpacc.hxx>
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#endif
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#ifndef _SV_BITMAPEX_HXX
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#include <vcl/bitmapex.hxx>
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#endif
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#ifndef _SV_METRIC_HXX
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#include <vcl/metric.hxx>
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#endif
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#ifndef _VCL_CANVASTOOLS_HXX
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#include <vcl/canvastools.hxx>
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#endif
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#ifndef _BGFX_POINT_B2DPOINT_HXX
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#include <basegfx/point/b2dpoint.hxx>
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#endif
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#ifndef _BGFX_TUPLE_B2DTUPLE_HXX
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#include <basegfx/tuple/b2dtuple.hxx>
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#endif
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#ifndef _BGFX_RANGE_B2DRECTANGLE_HXX
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#include <basegfx/range/b2drectangle.hxx>
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#endif
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#ifndef _BGFX_MATRIX_B2DHOMMATRIX_HXX
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#endif
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#ifndef _BGFX_TOOLS_CANVASTOOLS_HXX
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#include <basegfx/tools/canvastools.hxx>
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#endif
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#ifndef _BGFX_NUMERIC_FTOOLS_HXX
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#include <basegfx/numeric/ftools.hxx>
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#endif
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#ifndef INCLUDED_RTL_MATH_HXX
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#include <rtl/math.hxx>
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#endif
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#include <canvas/canvastools.hxx>
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#include "impltools.hxx"
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#include "linepolypolygon.hxx"
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#include "canvasbitmap.hxx"
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#include <numeric>
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using namespace ::com::sun::star;
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namespace vclcanvas
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{
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namespace tools
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{
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::basegfx::B2DPolyPolygon polyPolygonFromXPolyPolygon2D( const uno::Reference< rendering::XPolyPolygon2D >& xPoly )
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{
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LinePolyPolygon* pPolyImpl = dynamic_cast< LinePolyPolygon* >( xPoly.get() );
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if( pPolyImpl )
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{
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return pPolyImpl->getPolyPolygon();
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}
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else
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{
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const sal_Int32 nPolys( xPoly->getNumberOfPolygons() );
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// not a known implementation object - try data source
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// interfaces
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uno::Reference< rendering::XBezierPolyPolygon2D > xBezierPoly(
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xPoly,
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uno::UNO_QUERY );
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if( xBezierPoly.is() )
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{
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return ::basegfx::unotools::polyPolygonFromBezier2DSequenceSequence(
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xBezierPoly->getBezierSegments( 0,
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nPolys,
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0,
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-1 ) );
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}
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else
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{
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uno::Reference< rendering::XLinePolyPolygon2D > xLinePoly(
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xPoly,
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uno::UNO_QUERY );
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// no implementation class and no data provider
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// found - contract violation.
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CHECK_AND_THROW( xLinePoly.is(),
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"VCLCanvas::polyPolygonFromXPolyPolygon2D(): Invalid input "
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"poly-polygon, cannot retrieve vertex data" );
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return ::basegfx::unotools::polyPolygonFromPoint2DSequenceSequence(
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xLinePoly->getPoints( 0,
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nPolys,
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0,
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-1 ) );
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}
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}
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}
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::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap )
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{
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uno::Reference< lang::XServiceInfo > xRef( xBitmap,
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uno::UNO_QUERY );
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if( xRef.is() &&
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xRef->getImplementationName().equals( ::rtl::OUString(RTL_CONSTASCII_USTRINGPARAM(CANVASBITMAP_IMPLEMENTATION_NAME))) )
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{
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// TODO(Q1): Maybe use dynamic_cast here
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return static_cast<CanvasBitmap*>(xBitmap.get())->getBitmap();
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}
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else
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{
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uno::Reference< lang::XUnoTunnel > xTunnel( xBitmap, uno::UNO_QUERY );
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if( xTunnel.is() )
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{
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sal_Int64 nPtr = xTunnel->getSomething( vcl::unotools::getTunnelIdentifier( vcl::unotools::Id_BitmapEx ) );
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if( nPtr )
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return BitmapEx( *(BitmapEx*)nPtr );
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}
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// TODO(F1): extract pixel from XBitmap interface
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ENSURE_AND_THROW( false,
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"bitmapExFromXBitmap(): could not extract bitmap" );
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}
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return ::BitmapEx();
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}
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bool setupFontTransform( ::Point& o_rPoint,
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::Font& io_rVCLFont,
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const rendering::ViewState& rViewState,
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const rendering::RenderState& rRenderState,
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::OutputDevice& rOutDev )
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{
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::basegfx::B2DHomMatrix aMatrix;
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::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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rViewState,
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rRenderState);
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::basegfx::B2DTuple aScale;
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::basegfx::B2DTuple aTranslate;
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double nRotate, nShearX;
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aMatrix.decompose( aScale, aTranslate, nRotate, nShearX );
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// query font metric _before_ tampering with width and height
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if( !::rtl::math::approxEqual(aScale.getX(), aScale.getY()) )
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{
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// retrieve true font width
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const int nFontWidth( rOutDev.GetFontMetric( io_rVCLFont ).GetWidth() );
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const int nScaledFontWidth( ::basegfx::fround(nFontWidth * aScale.getX()) );
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if( !nScaledFontWidth )
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{
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// scale is smaller than one pixel - disable text
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// output altogether
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return false;
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}
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io_rVCLFont.SetWidth( nScaledFontWidth );
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}
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if( !::rtl::math::approxEqual(aScale.getY(), 1.0) )
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{
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const int nFontHeight( io_rVCLFont.GetHeight() );
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io_rVCLFont.SetHeight( ::basegfx::fround(nFontHeight * aScale.getY()) );
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}
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io_rVCLFont.SetOrientation( static_cast< short >( ::basegfx::fround(-fmod(nRotate, 2*M_PI)*(1800.0/M_PI)) ) );
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// TODO(F2): Missing functionality in VCL: shearing
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o_rPoint.X() = ::basegfx::fround(aTranslate.getX());
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o_rPoint.Y() = ::basegfx::fround(aTranslate.getY());
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return true;
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}
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bool isPolyPolygonEqualRectangle( const PolyPolygon& rPolyPoly,
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const Rectangle& rRect )
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{
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// exclude some cheap cases first
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if( rPolyPoly.Count() != 1 )
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return false;
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const ::Polygon& rPoly( rPolyPoly[0] );
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USHORT nCount( rPoly.GetSize() );
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if( nCount != 4 && nCount != 5 )
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return false;
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// fill array with rectangle vertices
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const ::Point aPoints[4] =
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{
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rRect.TopLeft(),
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rRect.TopRight(),
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rRect.BottomRight(),
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rRect.BottomLeft()
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};
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// now match polygon and rectangle start points, to
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// facilitate point-by-point comparison
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const ::Point* aIter;
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const ::Point* const aEnd( &aPoints[5] );
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if( (aIter=::std::find( aPoints, aEnd,
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rPoly[0] )) == aEnd )
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return false; // point not found
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// determine index from iterator
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const ::std::size_t nIndexOfFirstPoint( aIter - aPoints );
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bool bNotMatching( false ); // when true, at least on
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// point does not match
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// start point found, now try forward sweep to match
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// points
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for( USHORT i=0; i<4; ++i )
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{
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if( rPoly[i] != aPoints[ (i+nIndexOfFirstPoint)%4 ] )
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{
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bNotMatching = true;
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break;
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}
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}
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if( !bNotMatching )
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return true; // all points match, done
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// at least one point doesn't match, try reverse sweep to
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// match points
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for( USHORT i=0; i<4; ++i )
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{
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if( rPoly[i] != aPoints[ (4-i+nIndexOfFirstPoint)%4 ] )
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return false; // nothing more to try, exit directly
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}
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// all points for reverse sweep match
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return true;
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}
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// VCL-Canvas related
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//---------------------------------------------------------------------
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::Point mapRealPoint2D( const geometry::RealPoint2D& rPoint,
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const rendering::ViewState& rViewState,
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const rendering::RenderState& rRenderState )
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{
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::basegfx::B2DPoint aPoint( ::basegfx::unotools::b2DPointFromRealPoint2D(rPoint) );
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::basegfx::B2DHomMatrix aMatrix;
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aPoint *= ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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rViewState,
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rRenderState);
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return ::vcl::unotools::pointFromB2DPoint( aPoint );
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}
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::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon& rPoly,
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const rendering::ViewState& rViewState,
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const rendering::RenderState& rRenderState )
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{
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::basegfx::B2DHomMatrix aMatrix;
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::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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rViewState,
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rRenderState);
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::basegfx::B2DPolyPolygon aTemp( rPoly );
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aTemp.transform( aMatrix );
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return ::PolyPolygon( aTemp );
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}
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::BitmapEx transformBitmap( const BitmapEx& rBitmap,
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const ::basegfx::B2DHomMatrix& rTransform,
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const uno::Sequence< double >& rDeviceColor,
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ModulationMode eModulationMode )
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{
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RTL_LOGFILE_CONTEXT( aLog, "::vclcanvas::tools::transformBitmap()" );
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RTL_LOGFILE_CONTEXT_TRACE1( aLog, "::vclcanvas::tools::transformBitmap: 0x%X", &rBitmap );
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// calc transformation and size of bitmap to be
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// generated. Note, that the translational components are
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// deleted from the transformation; this can be handled by
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// an offset when painting the bitmap
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const Size aBmpSize( rBitmap.GetSizePixel() );
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::basegfx::B2DRectangle aDestRect;
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bool bCopyBack( false );
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// calc effective transformation for bitmap
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const ::basegfx::B2DRectangle aSrcRect( 0, 0,
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aBmpSize.Width(),
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aBmpSize.Height() );
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::canvas::tools::calcTransformedRectBounds( aDestRect,
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aSrcRect,
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rTransform );
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// re-center bitmap, such that it's left, top border is
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// aligned with (0,0). The method takes the given
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// rectangle, and calculates a transformation that maps
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// this rectangle unscaled to the origin.
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::basegfx::B2DHomMatrix aLocalTransform;
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::canvas::tools::calcRectToOriginTransform( aLocalTransform,
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aSrcRect,
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rTransform );
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const bool bModulateColors( eModulationMode == MODULATE_WITH_DEVICECOLOR &&
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rDeviceColor.getLength() > 2 );
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const double nRedModulation( bModulateColors ? rDeviceColor[0] : 1.0 );
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const double nGreenModulation( bModulateColors ? rDeviceColor[1] : 1.0 );
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const double nBlueModulation( bModulateColors ? rDeviceColor[2] : 1.0 );
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const double nAlphaModulation( bModulateColors && rDeviceColor.getLength() > 3 ?
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rDeviceColor[3] : 1.0 );
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Bitmap aSrcBitmap( rBitmap.GetBitmap() );
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Bitmap aSrcAlpha;
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// differentiate mask and alpha channel (on-off
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// vs. multi-level transparency)
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if( rBitmap.IsTransparent() )
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{
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if( rBitmap.IsAlpha() )
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aSrcAlpha = rBitmap.GetAlpha().GetBitmap();
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else
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aSrcAlpha = rBitmap.GetMask();
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}
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ScopedBitmapReadAccess pReadAccess( aSrcBitmap.AcquireReadAccess(),
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aSrcBitmap );
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ScopedBitmapReadAccess pAlphaReadAccess( rBitmap.IsTransparent() ?
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aSrcAlpha.AcquireReadAccess() :
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(BitmapReadAccess*)NULL,
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aSrcAlpha );
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if( pReadAccess.get() == NULL ||
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(pAlphaReadAccess.get() == NULL && rBitmap.IsTransparent()) )
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{
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// TODO(E2): Error handling!
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ENSURE_AND_THROW( false,
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"transformBitmap(): could not access source bitmap" );
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}
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// mapping table, to translate pAlphaReadAccess' pixel
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// values into destination alpha values (needed e.g. for
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// paletted 1-bit masks).
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sal_uInt8 aAlphaMap[256];
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if( rBitmap.IsTransparent() )
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{
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if( rBitmap.IsAlpha() )
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{
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// source already has alpha channel - 1:1 mapping,
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// i.e. aAlphaMap[0]=0,...,aAlphaMap[255]=255.
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::std::iota( aAlphaMap, &aAlphaMap[256], 0 );
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}
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else
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{
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// mask transparency - determine used palette colors
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const BitmapColor& rCol0( pAlphaReadAccess->GetPaletteColor( 0 ) );
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const BitmapColor& rCol1( pAlphaReadAccess->GetPaletteColor( 1 ) );
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// shortcut for true luminance calculation
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// (assumes that palette is grey-level)
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aAlphaMap[0] = rCol0.GetRed();
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aAlphaMap[1] = rCol1.GetRed();
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}
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}
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// else: mapping table is not used
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const Size aDestBmpSize( ::basegfx::fround( aDestRect.getWidth() ),
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::basegfx::fround( aDestRect.getHeight() ) );
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if( aDestBmpSize.Width() == 0 || aDestBmpSize.Height() == 0 )
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return BitmapEx();
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Bitmap aDstBitmap( aDestBmpSize, aSrcBitmap.GetBitCount(), &pReadAccess->GetPalette() );
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Bitmap aDstAlpha( AlphaMask( aDestBmpSize ).GetBitmap() );
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{
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// just to be on the safe side: let the
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// ScopedAccessors get destructed before
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// copy-constructing the resulting bitmap. This will
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// rule out the possibility that cached accessor data
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// is not yet written back.
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ScopedBitmapWriteAccess pWriteAccess( aDstBitmap.AcquireWriteAccess(),
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aDstBitmap );
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ScopedBitmapWriteAccess pAlphaWriteAccess( aDstAlpha.AcquireWriteAccess(),
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aDstAlpha );
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if( pWriteAccess.get() != NULL &&
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pAlphaWriteAccess.get() != NULL &&
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rTransform.isInvertible() )
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{
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// we're doing inverse mapping here, i.e. mapping
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// points from the destination bitmap back to the
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// source
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::basegfx::B2DHomMatrix aTransform( aLocalTransform );
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aTransform.invert();
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// for the time being, always read as ARGB
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for( int y=0; y<aDestBmpSize.Height(); ++y )
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{
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if( bModulateColors )
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{
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// TODO(P2): Have different branches for
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// alpha-only modulation (color
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// modulations eq. 1.0)
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// modulate all color channels with given
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// values
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// differentiate mask and alpha channel (on-off
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// vs. multi-level transparency)
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if( rBitmap.IsTransparent() )
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{
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// Handling alpha and mask just the same...
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for( int x=0; x<aDestBmpSize.Width(); ++x )
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{
|
|
::basegfx::B2DPoint aPoint(x,y);
|
|
aPoint *= aTransform;
|
|
|
|
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
|
|
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
|
|
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
|
|
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
|
|
{
|
|
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
|
|
}
|
|
else
|
|
{
|
|
// modulate alpha with
|
|
// nAlphaModulation. This is a
|
|
// little bit verbose, formula
|
|
// is 255 - (255-pixAlpha)*nAlphaModulation
|
|
// (invert 'alpha' pixel value,
|
|
// to get the standard alpha
|
|
// channel behaviour)
|
|
pAlphaWriteAccess->SetPixel( y, x,
|
|
BitmapColor(
|
|
255U -
|
|
static_cast<BYTE>(
|
|
nAlphaModulation*
|
|
(255U
|
|
- aAlphaMap[ pAlphaReadAccess->GetPixel(
|
|
nSrcY,
|
|
nSrcX ).GetIndex() ] ) + .5 ) ) );
|
|
|
|
BitmapColor aColor( pReadAccess->GetPixel( nSrcY,
|
|
nSrcX ) );
|
|
|
|
aColor.SetRed(
|
|
static_cast<BYTE>(
|
|
nRedModulation *
|
|
aColor.GetRed() + .5 ));
|
|
aColor.SetGreen(
|
|
static_cast<BYTE>(
|
|
nGreenModulation *
|
|
aColor.GetGreen() + .5 ));
|
|
aColor.SetBlue(
|
|
static_cast<BYTE>(
|
|
nBlueModulation *
|
|
aColor.GetBlue() + .5 ));
|
|
|
|
pWriteAccess->SetPixel( y, x,
|
|
aColor );
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for( int x=0; x<aDestBmpSize.Width(); ++x )
|
|
{
|
|
::basegfx::B2DPoint aPoint(x,y);
|
|
aPoint *= aTransform;
|
|
|
|
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
|
|
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
|
|
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
|
|
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
|
|
{
|
|
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
|
|
}
|
|
else
|
|
{
|
|
// modulate alpha with
|
|
// nAlphaModulation. This is a
|
|
// little bit verbose, formula
|
|
// is 255 - 255*nAlphaModulation
|
|
// (invert 'alpha' pixel value,
|
|
// to get the standard alpha
|
|
// channel behaviour)
|
|
pAlphaWriteAccess->SetPixel( y, x,
|
|
BitmapColor(
|
|
255U -
|
|
static_cast<BYTE>(
|
|
nAlphaModulation*255.0
|
|
+ .5 ) ) );
|
|
|
|
BitmapColor aColor( pReadAccess->GetPixel( nSrcY,
|
|
nSrcX ) );
|
|
|
|
aColor.SetRed(
|
|
static_cast<BYTE>(
|
|
nRedModulation *
|
|
aColor.GetRed() + .5 ));
|
|
aColor.SetGreen(
|
|
static_cast<BYTE>(
|
|
nGreenModulation *
|
|
aColor.GetGreen() + .5 ));
|
|
aColor.SetBlue(
|
|
static_cast<BYTE>(
|
|
nBlueModulation *
|
|
aColor.GetBlue() + .5 ));
|
|
|
|
pWriteAccess->SetPixel( y, x,
|
|
aColor );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// differentiate mask and alpha channel (on-off
|
|
// vs. multi-level transparency)
|
|
if( rBitmap.IsTransparent() )
|
|
{
|
|
// Handling alpha and mask just the same...
|
|
for( int x=0; x<aDestBmpSize.Width(); ++x )
|
|
{
|
|
::basegfx::B2DPoint aPoint(x,y);
|
|
aPoint *= aTransform;
|
|
|
|
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
|
|
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
|
|
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
|
|
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
|
|
{
|
|
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
|
|
}
|
|
else
|
|
{
|
|
pAlphaWriteAccess->SetPixel( y, x,
|
|
aAlphaMap[
|
|
pAlphaReadAccess->GetPixel( nSrcY,
|
|
nSrcX ) ] );
|
|
|
|
pWriteAccess->SetPixel( y, x, pReadAccess->GetPixel( nSrcY,
|
|
nSrcX ) );
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for( int x=0; x<aDestBmpSize.Width(); ++x )
|
|
{
|
|
::basegfx::B2DPoint aPoint(x,y);
|
|
aPoint *= aTransform;
|
|
|
|
const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
|
|
const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
|
|
if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
|
|
nSrcY < 0 || nSrcY >= aBmpSize.Height() )
|
|
{
|
|
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
|
|
}
|
|
else
|
|
{
|
|
pAlphaWriteAccess->SetPixel( y, x, BitmapColor(0) );
|
|
pWriteAccess->SetPixel( y, x, pReadAccess->GetPixel( nSrcY,
|
|
nSrcX ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bCopyBack = true;
|
|
}
|
|
else
|
|
{
|
|
// TODO(E2): Error handling!
|
|
ENSURE_AND_THROW( false,
|
|
"transformBitmap(): could not access bitmap" );
|
|
}
|
|
}
|
|
|
|
if( bCopyBack )
|
|
return BitmapEx( aDstBitmap, AlphaMask( aDstAlpha ) );
|
|
else
|
|
return BitmapEx();
|
|
}
|
|
}
|
|
}
|