canvastools.cxx

Go to the documentation of this file.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */
 
#include <com/sun/star/geometry/RealSize2D.hpp>
#include <com/sun/star/geometry/RealPoint2D.hpp>
#include <com/sun/star/geometry/RealRectangle2D.hpp>
#include <com/sun/star/geometry/RealRectangle3D.hpp>
#include <com/sun/star/geometry/RealBezierSegment2D.hpp>
#include <com/sun/star/geometry/AffineMatrix2D.hpp>
#include <com/sun/star/geometry/AffineMatrix3D.hpp>
#include <com/sun/star/geometry/IntegerSize2D.hpp>
#include <com/sun/star/geometry/IntegerRectangle2D.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/rendering/XPolyPolygon2D.hpp>
#include <com/sun/star/rendering/XGraphicDevice.hpp>
#include <com/sun/star/awt/Rectangle.hpp>
#include <basegfx/utils/unopolypolygon.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b3dhommatrix.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/vector/b2dsize.hxx>
#include <basegfx/vector/b2ivector.hxx>
#include <basegfx/range/b3drange.hxx>
#include <basegfx/range/b2irange.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/utils/canvastools.hxx>
 
using namespace ::com::sun::star;
 
namespace basegfx::unotools
{
        namespace
        {
            uno::Sequence< geometry::RealBezierSegment2D > bezierSequenceFromB2DPolygon(const ::basegfx::B2DPolygon& rPoly)
            {
                const sal_uInt32 nPointCount(rPoly.count());
                uno::Sequence< geometry::RealBezierSegment2D > outputSequence(nPointCount);
                geometry::RealBezierSegment2D* pOutput = outputSequence.getArray();
 
                // fill sequences and imply closed polygon on this implementation layer
                for(sal_uInt32 a(0); a < nPointCount; a++)
                {
                    const basegfx::B2DPoint aStart(rPoly.getB2DPoint(a));
                    const basegfx::B2DPoint aControlA(rPoly.getNextControlPoint(a));
                    const basegfx::B2DPoint aControlB(rPoly.getPrevControlPoint((a + 1) % nPointCount));
 
                    pOutput[a] = geometry::RealBezierSegment2D(
                        aStart.getX(), aStart.getY(),
                        aControlA.getX(), aControlA.getY(),
                        aControlB.getX(), aControlB.getY());
                }
 
                return outputSequence;
            }
 
            uno::Sequence< geometry::RealPoint2D > pointSequenceFromB2DPolygon( const ::basegfx::B2DPolygon& rPoly )
            {
                const sal_uInt32 nNumPoints( rPoly.count() );
 
                uno::Sequence< geometry::RealPoint2D > outputSequence( nNumPoints );
                geometry::RealPoint2D* pOutput = outputSequence.getArray();
 
                // fill sequence from polygon
                sal_uInt32 i;
                for( i=0; i<nNumPoints; ++i )
                {
                    const ::basegfx::B2DPoint   aPoint( rPoly.getB2DPoint(i) );
 
                    pOutput[i] = geometry::RealPoint2D( aPoint.getX(),
                                                        aPoint.getY() );
                }
 
                return outputSequence;
            }
        }
 
        uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > > bezierSequenceSequenceFromB2DPolyPolygon( const ::basegfx::B2DPolyPolygon& rPolyPoly )
        {
            const sal_uInt32 nNumPolies( rPolyPoly.count() );
            sal_uInt32 i;
 
            uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > > outputSequence( nNumPolies );
            uno::Sequence< geometry::RealBezierSegment2D >* pOutput = outputSequence.getArray();
 
            for( i=0; i<nNumPolies; ++i )
            {
                pOutput[i] = bezierSequenceFromB2DPolygon( rPolyPoly.getB2DPolygon(i) );
            }
 
            return outputSequence;
        }
 
        uno::Sequence< uno::Sequence< geometry::RealPoint2D > > pointSequenceSequenceFromB2DPolyPolygon( const ::basegfx::B2DPolyPolygon& rPolyPoly  )
        {
            const sal_uInt32 nNumPolies( rPolyPoly.count() );
            sal_uInt32 i;
 
            uno::Sequence< uno::Sequence< geometry::RealPoint2D > > outputSequence( nNumPolies );
            uno::Sequence< geometry::RealPoint2D >* pOutput = outputSequence.getArray();
 
            for( i=0; i<nNumPolies; ++i )
            {
                pOutput[i] = pointSequenceFromB2DPolygon( rPolyPoly.getB2DPolygon(i) );
            }
 
            return outputSequence;
        }
 
        uno::Reference< rendering::XPolyPolygon2D > xPolyPolygonFromB2DPolygon( const uno::Reference< rendering::XGraphicDevice >&  xGraphicDevice,
                                                                                const ::basegfx::B2DPolygon&                        rPoly    )
        {
            uno::Reference< rendering::XPolyPolygon2D > xRes;
 
            if( !xGraphicDevice.is() )
                return xRes;
 
            if( rPoly.areControlPointsUsed() )
            {
                uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > > outputSequence{ bezierSequenceFromB2DPolygon( rPoly )};
 
                xRes = xGraphicDevice->createCompatibleBezierPolyPolygon( outputSequence );
            }
            else
            {
                uno::Sequence< uno::Sequence< geometry::RealPoint2D > > outputSequence{
                 pointSequenceFromB2DPolygon( rPoly )};
 
                xRes = xGraphicDevice->createCompatibleLinePolyPolygon( outputSequence );
            }
 
            if( xRes.is() && rPoly.isClosed() )
                xRes->setClosed( 0, true );
 
            return xRes;
        }
 
        uno::Reference< rendering::XPolyPolygon2D > xPolyPolygonFromB2DPolyPolygon( const uno::Reference< rendering::XGraphicDevice >&  xGraphicDevice,
                                                                                    const ::basegfx::B2DPolyPolygon&                    rPolyPoly    )
        {
            uno::Reference< rendering::XPolyPolygon2D > xRes;
 
            if( !xGraphicDevice.is() )
                return xRes;
 
            const sal_uInt32 nNumPolies( rPolyPoly.count() );
            sal_uInt32 i;
 
            if( rPolyPoly.areControlPointsUsed() )
            {
                xRes = xGraphicDevice->createCompatibleBezierPolyPolygon(
                              bezierSequenceSequenceFromB2DPolyPolygon( rPolyPoly ) );
            }
            else
            {
                xRes = xGraphicDevice->createCompatibleLinePolyPolygon(
                              pointSequenceSequenceFromB2DPolyPolygon( rPolyPoly ) );
            }
 
            for( i=0; i<nNumPolies; ++i )
            {
                xRes->setClosed( i, rPolyPoly.getB2DPolygon(i).isClosed() );
            }
 
            return xRes;
        }
 
        ::basegfx::B2DPolygon polygonFromPoint2DSequence( const uno::Sequence< geometry::RealPoint2D >& points )
        {
            const sal_Int32 nCurrSize( points.getLength() );
 
            ::basegfx::B2DPolygon aPoly;
 
            for( sal_Int32 nCurrPoint=0; nCurrPoint<nCurrSize; ++nCurrPoint )
                aPoly.append( b2DPointFromRealPoint2D( points[nCurrPoint] ) );
 
            return aPoly;
        }
 
        ::basegfx::B2DPolyPolygon polyPolygonFromPoint2DSequenceSequence( const uno::Sequence< uno::Sequence< geometry::RealPoint2D > >& points )
        {
            ::basegfx::B2DPolyPolygon aRes;
 
            for( const auto & p : points )
            {
                aRes.append( polygonFromPoint2DSequence( p ) );
            }
 
            return aRes;
        }
 
        ::basegfx::B2DPolygon polygonFromBezier2DSequence( const uno::Sequence< geometry::RealBezierSegment2D >& curves )
        {
            const sal_Int32 nSize(curves.getLength());
            basegfx::B2DPolygon aRetval;
 
            if(nSize)
            {
                // prepare start with providing a start point. Use the first point from
                // the sequence for this
                const geometry::RealBezierSegment2D& rFirstSegment(curves[0]); // #i79917# first segment, not last
                aRetval.append(basegfx::B2DPoint(rFirstSegment.Px, rFirstSegment.Py));
 
                for(sal_Int32 a(0); a < nSize; a++)
                {
                    const geometry::RealBezierSegment2D& rCurrSegment(curves[a]);
                    const geometry::RealBezierSegment2D& rNextSegment(curves[(a + 1) % nSize]);
 
                    // append curved edge with the control points and the next point
                    aRetval.appendBezierSegment(
                        basegfx::B2DPoint(rCurrSegment.C1x, rCurrSegment.C1y),
                        basegfx::B2DPoint(rCurrSegment.C2x, rCurrSegment.C2y), // #i79917# Argh! An x for an y!!
                        basegfx::B2DPoint(rNextSegment.Px, rNextSegment.Py));
                }
 
                // rescue the control point and remove the now double-added point
                aRetval.setPrevControlPoint(0, aRetval.getPrevControlPoint(aRetval.count() - 1));
                aRetval.remove(aRetval.count() - 1);
            }
 
            return aRetval;
        }
 
        ::basegfx::B2DPolyPolygon polyPolygonFromBezier2DSequenceSequence( const uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > >& curves )
        {
            ::basegfx::B2DPolyPolygon aRes;
 
            for( const auto & c : curves )
            {
                aRes.append( polygonFromBezier2DSequence( c ) );
            }
 
            return aRes;
        }
 
        ::basegfx::B2DPolyPolygon b2DPolyPolygonFromXPolyPolygon2D( const uno::Reference< rendering::XPolyPolygon2D >& xPoly )
        {
            ::basegfx::unotools::UnoPolyPolygon* pPolyImpl =
                dynamic_cast< ::basegfx::unotools::UnoPolyPolygon* >( xPoly.get() );
 
            if( pPolyImpl )
            {
                return pPolyImpl->getPolyPolygon();
            }
            else
            {
                // not a known implementation object - try data source
                // interfaces
                const sal_Int32 nPolys( xPoly->getNumberOfPolygons() );
 
                uno::Reference< rendering::XBezierPolyPolygon2D > xBezierPoly(
                    xPoly,
                    uno::UNO_QUERY );
 
                if( xBezierPoly.is() )
                {
                    return ::basegfx::unotools::polyPolygonFromBezier2DSequenceSequence(
                        xBezierPoly->getBezierSegments( 0,
                                                        nPolys,
                                                        0,
                                                        -1 ) );
                }
                else
                {
                    uno::Reference< rendering::XLinePolyPolygon2D > xLinePoly(
                        xPoly,
                        uno::UNO_QUERY );
 
                    // no implementation class and no data provider
                    // found - contract violation.
                    if( !xLinePoly.is() )
                    {
                        throw lang::IllegalArgumentException(
                            "basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(): Invalid input"
                            "poly-polygon, cannot retrieve vertex data",
                            uno::Reference< uno::XInterface >(),
                            0 );
                    }
 
                    return ::basegfx::unotools::polyPolygonFromPoint2DSequenceSequence(
                        xLinePoly->getPoints( 0,
                                              nPolys,
                                              0,
                                              -1 ));
                }
            }
        }
 
        ::basegfx::B2DHomMatrix& homMatrixFromAffineMatrix( ::basegfx::B2DHomMatrix&        output,
                                                            const geometry::AffineMatrix2D& input )
        {
            // ensure last row is [0,0,1] (and optimized away)
            output.identity();
 
            output.set(0,0, input.m00);
            output.set(0,1, input.m01);
            output.set(0,2, input.m02);
            output.set(1,0, input.m10);
            output.set(1,1, input.m11);
            output.set(1,2, input.m12);
 
            return output;
        }
 
        ::basegfx::B3DHomMatrix homMatrixFromAffineMatrix3D( const ::css::geometry::AffineMatrix3D& input )
        {
            ::basegfx::B3DHomMatrix output;
 
            output.set(0,0, input.m00);
            output.set(0,1, input.m01);
            output.set(0,2, input.m02);
            output.set(0,3, input.m03);
 
            output.set(1,0, input.m10);
            output.set(1,1, input.m11);
            output.set(1,2, input.m12);
            output.set(1,3, input.m13);
 
            output.set(2,0, input.m20);
            output.set(2,1, input.m21);
            output.set(2,2, input.m22);
            output.set(2,3, input.m23);
 
            return output;
        }
 
        geometry::AffineMatrix2D& affineMatrixFromHomMatrix( geometry::AffineMatrix2D&      output,
                                                             const ::basegfx::B2DHomMatrix& input)
        {
            output.m00 = input.get(0,0);
            output.m01 = input.get(0,1);
            output.m02 = input.get(0,2);
            output.m10 = input.get(1,0);
            output.m11 = input.get(1,1);
            output.m12 = input.get(1,2);
 
            return output;
        }
 
        geometry::AffineMatrix3D& affineMatrixFromHomMatrix3D(
            geometry::AffineMatrix3D& output,
            const ::basegfx::B3DHomMatrix&  input)
        {
            output.m00 = input.get(0,0);
            output.m01 = input.get(0,1);
            output.m02 = input.get(0,2);
            output.m03 = input.get(0,3);
 
            output.m10 = input.get(1,0);
            output.m11 = input.get(1,1);
            output.m12 = input.get(1,2);
            output.m13 = input.get(1,3);
 
            output.m20 = input.get(2,0);
            output.m21 = input.get(2,1);
            output.m22 = input.get(2,2);
            output.m23 = input.get(2,3);
 
            return output;
        }
 
        geometry::RealSize2D size2DFromB2DSize(const ::basegfx::B2DSize& rSize)
        {
            return geometry::RealSize2D(rSize.getWidth(), rSize.getHeight());
        }
 
        geometry::RealPoint2D point2DFromB2DPoint( const ::basegfx::B2DPoint& rPoint )
        {
            return geometry::RealPoint2D( rPoint.getX(),
                                          rPoint.getY() );
        }
 
        geometry::RealRectangle2D rectangle2DFromB2DRectangle( const ::basegfx::B2DRange& rRect )
        {
            return geometry::RealRectangle2D( rRect.getMinX(),
                                              rRect.getMinY(),
                                              rRect.getMaxX(),
                                              rRect.getMaxY() );
        }
 
        geometry::RealRectangle3D rectangle3DFromB3DRectangle( const ::basegfx::B3DRange& rRect )
        {
            return geometry::RealRectangle3D( rRect.getMinX(),
                                              rRect.getMinY(),
                                              rRect.getMinZ(),
                                              rRect.getMaxX(),
                                              rRect.getMaxY(),
                                              rRect.getMaxZ());
        }
 
        ::basegfx::B2DPoint b2DPointFromRealPoint2D( const geometry::RealPoint2D& rPoint )
        {
            return ::basegfx::B2DPoint( rPoint.X,
                                        rPoint.Y );
        }
 
        ::basegfx::B2DRange b2DRectangleFromRealRectangle2D( const geometry::RealRectangle2D& rRect )
        {
            return ::basegfx::B2DRange( rRect.X1,
                                        rRect.Y1,
                                        rRect.X2,
                                        rRect.Y2 );
        }
 
        ::basegfx::B3DRange b3DRectangleFromRealRectangle3D( const geometry::RealRectangle3D& rRect )
        {
            return ::basegfx::B3DRange( rRect.X1,
                                        rRect.Y1,
                                        rRect.Z1,
                                        rRect.X2,
                                        rRect.Y2,
                                        rRect.Z2);
        }
 
        geometry::IntegerSize2D integerSize2DFromB2ISize( const ::basegfx::B2ISize& rSize )
        {
            return geometry::IntegerSize2D( rSize.getWidth(),
                                            rSize.getHeight() );
        }
 
        basegfx::B2ISize b2ISizeFromIntegerSize2D( const geometry::IntegerSize2D& rSize )
        {
            return basegfx::B2ISize(rSize.Width, rSize.Height);
        }
 
        ::basegfx::B2IRange b2IRectangleFromIntegerRectangle2D( const geometry::IntegerRectangle2D& rRectangle )
        {
            return ::basegfx::B2IRange( rRectangle.X1, rRectangle.Y1,
                                        rRectangle.X2, rRectangle.Y2 );
        }
 
        ::basegfx::B2IRange b2IRectangleFromAwtRectangle( const awt::Rectangle& rRect )
        {
            return ::basegfx::B2IRange( rRect.X,
                                        rRect.Y,
                                        rRect.X + rRect.Width,
                                        rRect.Y + rRect.Height );
        }
 
        ::basegfx::B2IRange b2ISurroundingRangeFromB2DRange( const ::basegfx::B2DRange& rRange )
        {
            return ::basegfx::B2IRange( static_cast<sal_Int32>( floor(rRange.getMinX()) ),
                                        static_cast<sal_Int32>( floor(rRange.getMinY()) ),
                                        static_cast<sal_Int32>( ceil(rRange.getMaxX()) ),
                                        static_cast<sal_Int32>( ceil(rRange.getMaxY()) ) );
        }
 
        ::basegfx::B2DRange b2DSurroundingIntegerRangeFromB2DRange( const ::basegfx::B2DRange& rRange )
        {
            return ::basegfx::B2DRange( floor(rRange.getMinX()),
                                        floor(rRange.getMinY()),
                                        ceil(rRange.getMaxX()),
                                        ceil(rRange.getMaxY()) );
        }
 
} // namespace
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */