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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"

#include <svx/sdr/contact/viewcontactofsdrpathobj.hxx>
#include <svx/svdopath.hxx>
#include <svx/sdr/primitive2d/sdrattributecreator.hxx>
#include <svx/sdr/attribute/sdrallattribute.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <svx/sdr/primitive2d/sdrpathprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace sdr
{
    namespace contact
    {
        ViewContactOfSdrPathObj::ViewContactOfSdrPathObj(SdrPathObj& rPathObj)
        :   ViewContactOfTextObj(rPathObj)
        {
        }

        ViewContactOfSdrPathObj::~ViewContactOfSdrPathObj()
        {
        }

        drawinglayer::primitive2d::Primitive2DSequence ViewContactOfSdrPathObj::createViewIndependentPrimitive2DSequence() const
        {
            drawinglayer::primitive2d::Primitive2DSequence xRetval;
            const SfxItemSet& rItemSet = GetPathObj().GetMergedItemSet();
            SdrText* pSdrText = GetPathObj().getText(0);

            if(pSdrText)
            {
                drawinglayer::attribute::SdrLineFillShadowTextAttribute* pAttribute =
                    drawinglayer::primitive2d::createNewSdrLineFillShadowTextAttribute(
                        rItemSet,
                        *pSdrText);

                if(pAttribute)
                {
                    if(pAttribute->isVisible())
                    {
                        basegfx::B2DPolyPolygon aUnitPolyPolygon(GetPathObj().GetPathPoly());
                        const sal_uInt32 nPolyCount(aUnitPolyPolygon.count());

                        if(nPolyCount)
                        {
                            // prepare object transformation and unit polygon (direct model data)
                            basegfx::B2DHomMatrix aObjectMatrix;
                            const bool bIsLine(
                                !aUnitPolyPolygon.areControlPointsUsed()
                                && 1 == nPolyCount
                                && 2 == aUnitPolyPolygon.getB2DPolygon(0).count());

                            if(bIsLine)
                            {
                                // special handling for single line mode (2 points)
                                const basegfx::B2DPolygon aSubPolygon(aUnitPolyPolygon.getB2DPolygon(0));
                                const basegfx::B2DPoint aStart(aSubPolygon.getB2DPoint(0));
                                const basegfx::B2DPoint aEnd(aSubPolygon.getB2DPoint(1));
                                const basegfx::B2DVector aLine(aEnd - aStart);

                                // #i102548# create new unit polygon for line (horizontal)
                                basegfx::B2DPolygon aNewPolygon;
                                aNewPolygon.append(basegfx::B2DPoint(0.0, 0.0));
                                aNewPolygon.append(basegfx::B2DPoint(1.0, 0.0));
                                aUnitPolyPolygon.setB2DPolygon(0, aNewPolygon);

                                // #i102548# fill objectMatrix with rotation and offset (no shear for lines)
                                aObjectMatrix = basegfx::tools::createScaleShearXRotateTranslateB2DHomMatrix(
                                    aLine.getLength(), 1.0,
                                    0.0,
                                    atan2(aLine.getY(), aLine.getX()),
                                    aStart.getX(), aStart.getY());
                            }
                            else
                            {
                                // #i102548# create unscaled, unsheared, unrotated and untranslated polygon
                                // (unit polygon) by creating the object matrix and back-transforming the polygon
                                const basegfx::B2DRange aObjectRange(basegfx::tools::getRange(aUnitPolyPolygon));
                                const GeoStat& rGeoStat(GetPathObj().GetGeoStat());
                                const double fWidth(aObjectRange.getWidth());
                                const double fHeight(aObjectRange.getHeight());
                                const double fScaleX(basegfx::fTools::equalZero(fWidth) ? 1.0 : fWidth);
                                const double fScaleY(basegfx::fTools::equalZero(fHeight) ? 1.0 : fHeight);

                                aObjectMatrix = basegfx::tools::createScaleShearXRotateTranslateB2DHomMatrix(
                                    fScaleX, fScaleY,
                                    rGeoStat.nShearWink ? tan((36000 - rGeoStat.nShearWink) * F_PI18000) : 0.0,
                                    rGeoStat.nDrehWink ? (36000 - rGeoStat.nDrehWink) * F_PI18000 : 0.0,
                                    aObjectRange.getMinX(), aObjectRange.getMinY());

                                // ceate unit polygon from object's absolute path
                                basegfx::B2DHomMatrix aInverse(aObjectMatrix);
                                aInverse.invert();
                                aUnitPolyPolygon.transform(aInverse);
                            }

                            // create primitive
                            const drawinglayer::primitive2d::Primitive2DReference xReference(
                                new drawinglayer::primitive2d::SdrPathPrimitive2D(
                                    aObjectMatrix,
                                    *pAttribute,
                                    aUnitPolyPolygon));

                            xRetval = drawinglayer::primitive2d::Primitive2DSequence(&xReference, 1);
                        }
                    }

                    delete pAttribute;
                }
            }

            return xRetval;
        }
    } // end of namespace contact
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////
// eof