xref: /aoo41x/main/vcl/source/gdi/outdev4.cxx (revision 6b7345f3)

/**************************************************************
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



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

#include <tools/debug.hxx>
#include <tools/line.hxx>
#include <tools/poly.hxx>

#include <vcl/gradient.hxx>
#include <vcl/metaact.hxx>
#include <vcl/gdimtf.hxx>
#include <vcl/salbtype.hxx>
#include <vcl/hatch.hxx>
#include <vcl/window.hxx>
#include <vcl/virdev.hxx>
#include <vcl/outdev.hxx>

#include "pdfwriter_impl.hxx"

#include "window.h"
#include "salframe.hxx"
#include "salgdi.hxx"
#include "svdata.hxx"
#include "outdata.hxx"

#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>

// -----------
// - Defines -
// -----------

#define HATCH_MAXPOINTS				1024
#define GRADIENT_DEFAULT_STEPCOUNT	0

// ----------------
// - Cmp-Function -
// ----------------

extern "C" int __LOADONCALLAPI ImplHatchCmpFnc( const void* p1, const void* p2 )
{
	const long nX1 = ( (Point*) p1 )->X();
	const long nX2 = ( (Point*) p2 )->X();
	const long nY1 = ( (Point*) p1 )->Y();
	const long nY2 = ( (Point*) p2 )->Y();

	return ( nX1 > nX2 ? 1 : nX1 == nX2 ? nY1 > nY2 ? 1: nY1 == nY2 ? 0 : -1 : -1 );
}

// =======================================================================

DBG_NAMEEX( OutputDevice )
DBG_NAMEEX( Gradient )

// =======================================================================

void OutputDevice::ImplDrawPolygon( const Polygon& rPoly, const PolyPolygon* pClipPolyPoly )
{
	if( pClipPolyPoly )
		ImplDrawPolyPolygon( rPoly, pClipPolyPoly );
	else
	{
		sal_uInt16 nPoints = rPoly.GetSize();

		if ( nPoints < 2 )
			return;

		const SalPoint* pPtAry = (const SalPoint*)rPoly.GetConstPointAry();
		mpGraphics->DrawPolygon( nPoints, pPtAry, this );
	}
}

// -----------------------------------------------------------------------

void OutputDevice::ImplDrawPolyPolygon( const PolyPolygon& rPolyPoly, const PolyPolygon* pClipPolyPoly )
{
	PolyPolygon* pPolyPoly;

	if( pClipPolyPoly )
	{
		pPolyPoly = new PolyPolygon;
		rPolyPoly.GetIntersection( *pClipPolyPoly, *pPolyPoly );
	}
	else
		pPolyPoly = (PolyPolygon*) &rPolyPoly;

	if( pPolyPoly->Count() == 1 )
	{
		const Polygon	rPoly = pPolyPoly->GetObject( 0 );
		sal_uInt16			nSize = rPoly.GetSize();

		if( nSize >= 2 )
		{
			const SalPoint* pPtAry = (const SalPoint*)rPoly.GetConstPointAry();
			mpGraphics->DrawPolygon( nSize, pPtAry, this );
		}
	}
	else if( pPolyPoly->Count() )
	{
		sal_uInt16				nCount = pPolyPoly->Count();
		sal_uInt32*			pPointAry = new sal_uInt32[nCount];
		PCONSTSALPOINT* 	pPointAryAry = new PCONSTSALPOINT[nCount];
		sal_uInt16				i = 0;
		do
		{
			const Polygon&	rPoly = pPolyPoly->GetObject( i );
			sal_uInt16			nSize = rPoly.GetSize();
			if ( nSize )
			{
				pPointAry[i]	= nSize;
				pPointAryAry[i] = (PCONSTSALPOINT)rPoly.GetConstPointAry();
				i++;
			}
			else
				nCount--;
		}
		while( i < nCount );

		if( nCount == 1 )
			mpGraphics->DrawPolygon( *pPointAry, *pPointAryAry, this );
		else
			mpGraphics->DrawPolyPolygon( nCount, pPointAry, pPointAryAry, this );

		delete[] pPointAry;
		delete[] pPointAryAry;
	}

	if( pClipPolyPoly )
		delete pPolyPoly;
}

// -----------------------------------------------------------------------

inline sal_uInt8 ImplGetGradientColorValue( long nValue )
{
	if ( nValue < 0 )
		return 0;
	else if ( nValue > 0xFF )
		return 0xFF;
	else
		return (sal_uInt8)nValue;
}

// -----------------------------------------------------------------------

void OutputDevice::ImplDrawLinearGradient( const Rectangle& rRect,
										   const Gradient& rGradient,
										   sal_Bool bMtf, const PolyPolygon* pClipPolyPoly )
{
	// rotiertes BoundRect ausrechnen
	Rectangle aRect = rRect;
	aRect.Left()--;
	aRect.Top()--;
	aRect.Right()++;
	aRect.Bottom()++;
	sal_uInt16	nAngle = rGradient.GetAngle() % 3600;
	double	fAngle	= nAngle * F_PI1800;
	double	fWidth	= aRect.GetWidth();
	double	fHeight = aRect.GetHeight();
	double	fDX 	= fWidth  * fabs( cos( fAngle ) ) +
					  fHeight * fabs( sin( fAngle ) );
	double	fDY 	= fHeight * fabs( cos( fAngle ) ) +
					  fWidth  * fabs( sin( fAngle ) );
			fDX 	= (fDX - fWidth)  * 0.5 + 0.5;
			fDY 	= (fDY - fHeight) * 0.5 + 0.5;
	aRect.Left()   -= (long)fDX;
	aRect.Right()  += (long)fDX;
	aRect.Top()    -= (long)fDY;
	aRect.Bottom() += (long)fDY;

	// Rand berechnen und Rechteck neu setzen
	Point		aCenter = rRect.Center();
	Rectangle	aFullRect = aRect;
	long		nBorder = (long)rGradient.GetBorder() * aRect.GetHeight() / 100;
	sal_Bool		bLinear;

	// Rand berechnen und Rechteck neu setzen fuer linearen Farbverlauf
	if ( rGradient.GetStyle() == GRADIENT_LINEAR )
	{
		bLinear = sal_True;
		aRect.Top() += nBorder;
	}
	// Rand berechnen und Rechteck neu setzen fuer axiale Farbverlauf
	else
	{
		bLinear = sal_False;
		nBorder >>= 1;

		aRect.Top()    += nBorder;
		aRect.Bottom() -= nBorder;
	}

	// Top darf nicht groesser als Bottom sein
	aRect.Top() = Min( aRect.Top(), (long)(aRect.Bottom() - 1) );

	long nMinRect = aRect.GetHeight();

	// Intensitaeten von Start- und Endfarbe ggf. aendern und
	// Farbschrittweiten berechnen
	long			nFactor;
	Color			aStartCol	= rGradient.GetStartColor();
	Color			aEndCol 	= rGradient.GetEndColor();
	long			nStartRed	= aStartCol.GetRed();
	long			nStartGreen = aStartCol.GetGreen();
	long			nStartBlue	= aStartCol.GetBlue();
	long			nEndRed 	= aEndCol.GetRed();
	long			nEndGreen	= aEndCol.GetGreen();
	long			nEndBlue	= aEndCol.GetBlue();
					nFactor 	= rGradient.GetStartIntensity();
					nStartRed	= (nStartRed   * nFactor) / 100;
					nStartGreen = (nStartGreen * nFactor) / 100;
					nStartBlue	= (nStartBlue  * nFactor) / 100;
					nFactor 	= rGradient.GetEndIntensity();
					nEndRed 	= (nEndRed	 * nFactor) / 100;
					nEndGreen	= (nEndGreen * nFactor) / 100;
					nEndBlue	= (nEndBlue  * nFactor) / 100;
	long			nRedSteps	= nEndRed	- nStartRed;
	long			nGreenSteps = nEndGreen - nStartGreen;
	long			nBlueSteps	= nEndBlue	- nStartBlue;
	long            nStepCount = rGradient.GetSteps();

	// Bei nicht linearen Farbverlaeufen haben wir nur die halben Steps
	// pro Farbe
	if ( !bLinear )
	{
		nRedSteps	<<= 1;
		nGreenSteps <<= 1;
		nBlueSteps	<<= 1;
	}

	// Anzahl der Schritte berechnen, falls nichts uebergeben wurde
	if ( !nStepCount )
	{
		long nInc;

		if ( meOutDevType != OUTDEV_PRINTER && !bMtf )
        {
			nInc = (nMinRect < 50) ? 2 : 4;
        }
		else
        {
            // #105998# Use display-equivalent step size calculation
			nInc = (nMinRect < 800) ? 10 : 20;
        }

		if ( !nInc )
			nInc = 1;

		nStepCount = nMinRect / nInc;
	}
	// minimal drei Schritte und maximal die Anzahl der Farbunterschiede
	long nSteps = Max( nStepCount, 2L );
	long nCalcSteps  = Abs( nRedSteps );
	long nTempSteps = Abs( nGreenSteps );
	if ( nTempSteps > nCalcSteps )
		nCalcSteps = nTempSteps;
	nTempSteps = Abs( nBlueSteps );
	if ( nTempSteps > nCalcSteps )
		nCalcSteps = nTempSteps;
	if ( nCalcSteps < nSteps )
		nSteps = nCalcSteps;
	if ( !nSteps )
		nSteps = 1;

	// Falls axialer Farbverlauf, muss die Schrittanzahl ungerade sein
	if ( !bLinear && !(nSteps & 1) )
		nSteps++;

	// Berechnung ueber Double-Addition wegen Genauigkeit
	double fScanLine = aRect.Top();
	double fScanInc  = (double)aRect.GetHeight() / (double)nSteps;

	// Startfarbe berechnen und setzen
	sal_uInt8	nRed;
	sal_uInt8	nGreen;
	sal_uInt8	nBlue;
	long	nSteps2;
	long	nStepsHalf = 0;
	if ( bLinear )
	{
		// Um 1 erhoeht, um die Border innerhalb der Schleife
		// zeichnen zu koennen
		nSteps2 	= nSteps + 1;
		nRed		= (sal_uInt8)nStartRed;
		nGreen		= (sal_uInt8)nStartGreen;
		nBlue		= (sal_uInt8)nStartBlue;
	}
	else
	{
		// Um 2 erhoeht, um die Border innerhalb der Schleife
		// zeichnen zu koennen
		nSteps2 	= nSteps + 2;
		nRed		= (sal_uInt8)nEndRed;
		nGreen		= (sal_uInt8)nEndGreen;
		nBlue		= (sal_uInt8)nEndBlue;
		nStepsHalf	= nSteps >> 1;
	}

	if ( bMtf )
		mpMetaFile->AddAction( new MetaFillColorAction( Color( nRed, nGreen, nBlue ), sal_True ) );
	else
		mpGraphics->SetFillColor( MAKE_SALCOLOR( nRed, nGreen, nBlue ) );

	// Startpolygon erzeugen (== Borderpolygon)
	Polygon 	aPoly( 4 );
	Polygon 	aTempPoly( 2 );
	aPoly[0] = aFullRect.TopLeft();
	aPoly[1] = aFullRect.TopRight();
	aPoly[2] = aRect.TopRight();
	aPoly[3] = aRect.TopLeft();
	aPoly.Rotate( aCenter, nAngle );

	// Schleife, um rotierten Verlauf zu fuellen
	for ( long i = 0; i < nSteps2; i++ )
	{
		// berechnetesPolygon ausgeben
		if ( bMtf )
			mpMetaFile->AddAction( new MetaPolygonAction( aPoly ) );
		else
			ImplDrawPolygon( aPoly, pClipPolyPoly );

		// neues Polygon berechnen
		aRect.Top() = (long)(fScanLine += fScanInc);

		// unteren Rand komplett fuellen
		if ( i == nSteps )
		{
			aTempPoly[0] = aFullRect.BottomLeft();
			aTempPoly[1] = aFullRect.BottomRight();
		}
		else
		{
			aTempPoly[0] = aRect.TopLeft();
			aTempPoly[1] = aRect.TopRight();
		}
		aTempPoly.Rotate( aCenter, nAngle );

		aPoly[0] = aPoly[3];
		aPoly[1] = aPoly[2];
		aPoly[2] = aTempPoly[1];
		aPoly[3] = aTempPoly[0];

		// Farbintensitaeten aendern...
		// fuer lineare FV
		if ( bLinear )
		{
			nRed	= ImplGetGradientColorValue( nStartRed+((nRedSteps*i)/nSteps2) );
			nGreen	= ImplGetGradientColorValue( nStartGreen+((nGreenSteps*i)/nSteps2) );
			nBlue	= ImplGetGradientColorValue( nStartBlue+((nBlueSteps*i)/nSteps2) );
		}
		// fuer radiale FV
		else
		{
			// fuer axiale FV muss die letzte Farbe der ersten
			// Farbe entsprechen
            // #107350# Setting end color one step earlier, as the
            // last time we get here, we drop out of the loop later
            // on.
			if ( i >= nSteps )
			{
				nRed	= (sal_uInt8)nEndRed;
				nGreen	= (sal_uInt8)nEndGreen;
				nBlue	= (sal_uInt8)nEndBlue;
			}
			else
			{
				if ( i <= nStepsHalf )
				{
					nRed	= ImplGetGradientColorValue( nEndRed-((nRedSteps*i)/nSteps2) );
					nGreen	= ImplGetGradientColorValue( nEndGreen-((nGreenSteps*i)/nSteps2) );
					nBlue	= ImplGetGradientColorValue( nEndBlue-((nBlueSteps*i)/nSteps2) );
				}
				// genau die Mitte und hoeher
				else
				{
					long i2 = i - nStepsHalf;
					nRed	= ImplGetGradientColorValue( nStartRed+((nRedSteps*i2)/nSteps2) );
					nGreen	= ImplGetGradientColorValue( nStartGreen+((nGreenSteps*i2)/nSteps2) );
					nBlue	= ImplGetGradientColorValue( nStartBlue+((nBlueSteps*i2)/nSteps2) );
				}
			}
		}

		if ( bMtf )
			mpMetaFile->AddAction( new MetaFillColorAction( Color( nRed, nGreen, nBlue ), sal_True ) );
		else
			mpGraphics->SetFillColor( MAKE_SALCOLOR( nRed, nGreen, nBlue ) );
	}
}

// -----------------------------------------------------------------------

void OutputDevice::ImplDrawComplexGradient( const Rectangle& rRect,
										    const Gradient& rGradient,
										    sal_Bool bMtf, const PolyPolygon* pClipPolyPoly )
{
	// Feststellen ob Ausgabe ueber Polygon oder PolyPolygon
	// Bei Rasteroperationen ungleich Overpaint immer PolyPolygone,
	// da es zu falschen Ergebnissen kommt, wenn man mehrfach uebereinander
	// ausgibt
	// Bei Druckern auch immer PolyPolygone, da nicht alle Drucker
	// das Uebereinanderdrucken von Polygonen koennen
	// Virtuelle Device werden auch ausgeklammert, da einige Treiber
	// ansonsten zu langsam sind
	PolyPolygon*    pPolyPoly;
	Rectangle	    aRect( rRect );
	Color			aStartCol( rGradient.GetStartColor() );
	Color			aEndCol( rGradient.GetEndColor() );
    long			nStartRed = ( (long) aStartCol.GetRed() * rGradient.GetStartIntensity() ) / 100;
    long			nStartGreen = ( (long) aStartCol.GetGreen() * rGradient.GetStartIntensity() ) / 100;
	long			nStartBlue = ( (long) aStartCol.GetBlue() * rGradient.GetStartIntensity() ) / 100;
    long			nEndRed = ( (long) aEndCol.GetRed() * rGradient.GetEndIntensity() ) / 100;
    long			nEndGreen = ( (long) aEndCol.GetGreen() * rGradient.GetEndIntensity() ) / 100;
	long			nEndBlue = ( (long) aEndCol.GetBlue() * rGradient.GetEndIntensity() ) / 100;
	long			nRedSteps = nEndRed	- nStartRed;
	long			nGreenSteps = nEndGreen - nStartGreen;
	long			nBlueSteps = nEndBlue	- nStartBlue;
	long            nStepCount = rGradient.GetSteps();
	sal_uInt16	        nAngle = rGradient.GetAngle() % 3600;

    if( (meRasterOp != ROP_OVERPAINT) || (meOutDevType != OUTDEV_WINDOW) || bMtf )
		pPolyPoly = new PolyPolygon( 2 );
	else
		pPolyPoly = NULL;

    if( rGradient.GetStyle() == GRADIENT_SQUARE || rGradient.GetStyle() == GRADIENT_RECT )
    {
        const double    fAngle	= nAngle * F_PI1800;
	    const double    fWidth	= aRect.GetWidth();
	    const double    fHeight = aRect.GetHeight();
	    double          fDX = fWidth  * fabs( cos( fAngle ) ) + fHeight * fabs( sin( fAngle ) );
	    double          fDY = fHeight * fabs( cos( fAngle ) ) + fWidth  * fabs( sin( fAngle ) );

        fDX = ( fDX - fWidth ) * 0.5 + 0.5;
        fDY = ( fDY - fHeight ) * 0.5 + 0.5;

	    aRect.Left() -= (long) fDX;
	    aRect.Right() += (long) fDX;
	    aRect.Top() -= (long) fDY;
	    aRect.Bottom() += (long) fDY;
    }

    Size aSize( aRect.GetSize() );

    if( rGradient.GetStyle() == GRADIENT_RADIAL )
	{
	    // Radien-Berechnung fuer Kreis
		aSize.Width() = (long)(0.5 + sqrt((double)aSize.Width()*(double)aSize.Width() + (double)aSize.Height()*(double)aSize.Height()));
		aSize.Height() = aSize.Width();
	}
	else if( rGradient.GetStyle() == GRADIENT_ELLIPTICAL )
	{
	    // Radien-Berechnung fuer Ellipse
		aSize.Width() = (long)( 0.5 + (double) aSize.Width()  * 1.4142 );
		aSize.Height() = (long)( 0.5 + (double) aSize.Height() * 1.4142 );
	}
    else if( rGradient.GetStyle() == GRADIENT_SQUARE )
    {
		if ( aSize.Width() > aSize.Height() )
			aSize.Height() = aSize.Width();
		else
			aSize.Width() = aSize.Height();
    }

	// neue Mittelpunkte berechnen
	long	nZWidth = aRect.GetWidth()	* (long) rGradient.GetOfsX() / 100;
	long	nZHeight = aRect.GetHeight() * (long) rGradient.GetOfsY() / 100;
	long	nBorderX = (long) rGradient.GetBorder() * aSize.Width()  / 100;
	long	nBorderY = (long) rGradient.GetBorder() * aSize.Height() / 100;
	Point	aCenter( aRect.Left() + nZWidth, aRect.Top() + nZHeight );

	// Rand beruecksichtigen
	aSize.Width() -= nBorderX;
	aSize.Height() -= nBorderY;

	// Ausgaberechteck neu setzen
	aRect.Left() = aCenter.X() - ( aSize.Width() >> 1 );
	aRect.Top() = aCenter.Y() - ( aSize.Height() >> 1 );

    aRect.SetSize( aSize );
	long nMinRect = Min( aRect.GetWidth(), aRect.GetHeight() );

	// Anzahl der Schritte berechnen, falls nichts uebergeben wurde
    if( !nStepCount )
	{
		long nInc;

		if ( meOutDevType != OUTDEV_PRINTER && !bMtf )
        {
			nInc = ( nMinRect < 50 ) ? 2 : 4;
        }
		else
        {
            // #105998# Use display-equivalent step size calculation
			nInc = (nMinRect < 800) ? 10 : 20;
        }

		if( !nInc )
			nInc = 1;

		nStepCount = nMinRect / nInc;
	}

    // minimal drei Schritte und maximal die Anzahl der Farbunterschiede
	long nSteps = Max( nStepCount, 2L );
	long nCalcSteps  = Abs( nRedSteps );
	long nTempSteps = Abs( nGreenSteps );
	if ( nTempSteps > nCalcSteps )
		nCalcSteps = nTempSteps;
	nTempSteps = Abs( nBlueSteps );
	if ( nTempSteps > nCalcSteps )
		nCalcSteps = nTempSteps;
	if ( nCalcSteps < nSteps )
		nSteps = nCalcSteps;
	if ( !nSteps )
		nSteps = 1;

	// Ausgabebegrenzungen und Schrittweite fuer jede Richtung festlegen
    Polygon aPoly;
	double  fScanLeft = aRect.Left();
	double  fScanTop = aRect.Top();
	double  fScanRight = aRect.Right();
	double  fScanBottom = aRect.Bottom();
	double  fScanInc = (double) nMinRect / (double) nSteps * 0.5;
    sal_uInt8   nRed = (sal_uInt8) nStartRed, nGreen = (sal_uInt8) nStartGreen, nBlue = (sal_uInt8) nStartBlue;
    bool	bPaintLastPolygon( false ); // #107349# Paint last polygon only if loop has generated any output

	if( bMtf )
		mpMetaFile->AddAction( new MetaFillColorAction( Color( nRed, nGreen, nBlue ), sal_True ) );
	else
		mpGraphics->SetFillColor( MAKE_SALCOLOR( nRed, nGreen, nBlue ) );

	if( pPolyPoly )
	{
    	pPolyPoly->Insert( aPoly = rRect );
		pPolyPoly->Insert( aPoly );
	}
	else
    {
	    // extend rect, to avoid missing bounding line
        Rectangle aExtRect( rRect );

        aExtRect.Left() -= 1;
	    aExtRect.Top() -= 1;
	    aExtRect.Right() += 1;
	    aExtRect.Bottom() += 1;

		ImplDrawPolygon( aPoly = aExtRect, pClipPolyPoly );
    }

	// Schleife, um nacheinander die Polygone/PolyPolygone auszugeben
	for( long i = 1; i < nSteps; i++ )
	{
		// neues Polygon berechnen
		aRect.Left() = (long)( fScanLeft += fScanInc );
		aRect.Top() = (long)( fScanTop += fScanInc );
		aRect.Right() = (long)( fScanRight -= fScanInc );
		aRect.Bottom() = (long)( fScanBottom -= fScanInc );

		if( ( aRect.GetWidth() < 2 ) || ( aRect.GetHeight() < 2 ) )
			break;

        if( rGradient.GetStyle() == GRADIENT_RADIAL || rGradient.GetStyle() == GRADIENT_ELLIPTICAL )
		    aPoly = Polygon( aRect.Center(), aRect.GetWidth() >> 1, aRect.GetHeight() >> 1 );
        else
    		aPoly = Polygon( aRect );

		aPoly.Rotate( aCenter, nAngle );

		// Farbe entsprechend anpassen
        const long nStepIndex = ( ( pPolyPoly != NULL ) ? i : ( i + 1 ) );
        nRed = ImplGetGradientColorValue( nStartRed + ( ( nRedSteps * nStepIndex ) / nSteps ) );
		nGreen = ImplGetGradientColorValue( nStartGreen + ( ( nGreenSteps * nStepIndex ) / nSteps ) );
		nBlue = ImplGetGradientColorValue( nStartBlue + ( ( nBlueSteps * nStepIndex ) / nSteps ) );

		// entweder langsame PolyPolygon-Ausgaben oder schnelles Polygon-Painting
		if( pPolyPoly )
		{
            bPaintLastPolygon = true; // #107349# Paint last polygon only if loop has generated any output

			pPolyPoly->Replace( pPolyPoly->GetObject( 1 ), 0 );
			pPolyPoly->Replace( aPoly, 1 );

			if( bMtf )
				mpMetaFile->AddAction( new MetaPolyPolygonAction( *pPolyPoly ) );
			else
				ImplDrawPolyPolygon( *pPolyPoly, pClipPolyPoly );

            // #107349# Set fill color _after_ geometry painting:
            // pPolyPoly's geometry is the band from last iteration's
            // aPoly to current iteration's aPoly. The window outdev
            // path (see else below), on the other hand, paints the
            // full aPoly. Thus, here, we're painting the band before
            // the one painted in the window outdev path below. To get
            // matching colors, have to delay color setting here.
            if( bMtf )
                mpMetaFile->AddAction( new MetaFillColorAction( Color( nRed, nGreen, nBlue ), sal_True ) );
            else
                mpGraphics->SetFillColor( MAKE_SALCOLOR( nRed, nGreen, nBlue ) );
		}
		else
        {
            // #107349# Set fill color _before_ geometry painting
            if( bMtf )
                mpMetaFile->AddAction( new MetaFillColorAction( Color( nRed, nGreen, nBlue ), sal_True ) );
            else
                mpGraphics->SetFillColor( MAKE_SALCOLOR( nRed, nGreen, nBlue ) );

			ImplDrawPolygon( aPoly, pClipPolyPoly );
        }
	}

	// Falls PolyPolygon-Ausgabe, muessen wir noch ein letztes inneres Polygon zeichnen
	if( pPolyPoly )
	{
		const Polygon& rPoly = pPolyPoly->GetObject( 1 );

        if( !rPoly.GetBoundRect().IsEmpty() )
		{
            // #107349# Paint last polygon with end color only if loop
            // has generated output. Otherwise, the current
            // (i.e. start) color is taken, to generate _any_ output.
            if( bPaintLastPolygon )
            {
                nRed = ImplGetGradientColorValue( nEndRed );
                nGreen = ImplGetGradientColorValue( nEndGreen );
                nBlue = ImplGetGradientColorValue( nEndBlue );
            }

    		if( bMtf )
            {
	    		mpMetaFile->AddAction( new MetaFillColorAction( Color( nRed, nGreen, nBlue ), sal_True ) );
				mpMetaFile->AddAction( new MetaPolygonAction( rPoly ) );
            }
		    else
            {
			    mpGraphics->SetFillColor( MAKE_SALCOLOR( nRed, nGreen, nBlue ) );
   				ImplDrawPolygon( rPoly, pClipPolyPoly );
            }
		}

		delete pPolyPoly;
	}
}

// -----------------------------------------------------------------------

void OutputDevice::DrawGradient( const Rectangle& rRect,
								 const Gradient& rGradient )
{
	DBG_TRACE( "OutputDevice::DrawGradient()" );
	DBG_CHKTHIS( OutputDevice, ImplDbgCheckOutputDevice );
	DBG_CHKOBJ( &rGradient, Gradient, NULL );

	if ( mnDrawMode & DRAWMODE_NOGRADIENT )
		return;
	else if ( mnDrawMode & ( DRAWMODE_BLACKGRADIENT | DRAWMODE_WHITEGRADIENT | DRAWMODE_SETTINGSGRADIENT) )
	{
		Color aColor;

		if ( mnDrawMode & DRAWMODE_BLACKGRADIENT )
            aColor = Color( COL_BLACK );
		else if ( mnDrawMode & DRAWMODE_WHITEGRADIENT )
            aColor = Color( COL_WHITE );
        else if ( mnDrawMode & DRAWMODE_SETTINGSGRADIENT )
            aColor = GetSettings().GetStyleSettings().GetWindowColor();

		if ( mnDrawMode & DRAWMODE_GHOSTEDGRADIENT )
        {
            aColor = Color( ( aColor.GetRed() >> 1 ) | 0x80,
						    ( aColor.GetGreen() >> 1 ) | 0x80,
						    ( aColor.GetBlue() >> 1 ) | 0x80 );
        }

		Push( PUSH_LINECOLOR | PUSH_FILLCOLOR );
		SetLineColor( aColor );
		SetFillColor( aColor );
		DrawRect( rRect );
		Pop();
		return;
	}

	Gradient aGradient( rGradient );

	if ( mnDrawMode & ( DRAWMODE_GRAYGRADIENT | DRAWMODE_GHOSTEDGRADIENT ) )
	{
		Color aStartCol( aGradient.GetStartColor() );
		Color aEndCol( aGradient.GetEndColor() );

		if ( mnDrawMode & DRAWMODE_GRAYGRADIENT )
		{
			sal_uInt8 cStartLum = aStartCol.GetLuminance(), cEndLum = aEndCol.GetLuminance();
			aStartCol = Color( cStartLum, cStartLum, cStartLum );
			aEndCol = Color( cEndLum, cEndLum, cEndLum );
		}

		if ( mnDrawMode & DRAWMODE_GHOSTEDGRADIENT )
		{
			aStartCol = Color( ( aStartCol.GetRed() >> 1 ) | 0x80,
							   ( aStartCol.GetGreen() >> 1 ) | 0x80,
							   ( aStartCol.GetBlue() >> 1 ) | 0x80 );

			aEndCol = Color( ( aEndCol.GetRed() >> 1 ) | 0x80,
							 ( aEndCol.GetGreen() >> 1 ) | 0x80,
							 ( aEndCol.GetBlue() >> 1 ) | 0x80 );
		}

		aGradient.SetStartColor( aStartCol );
		aGradient.SetEndColor( aEndCol );
	}

	if( mpMetaFile )
		mpMetaFile->AddAction( new MetaGradientAction( rRect, aGradient ) );

	if( !IsDeviceOutputNecessary() || ImplIsRecordLayout() )
		return;

	// Rechteck in Pixel umrechnen
	Rectangle aRect( ImplLogicToDevicePixel( rRect ) );
	aRect.Justify();

	// Wenn Rechteck leer ist, brauchen wir nichts machen
	if ( !aRect.IsEmpty() )
	{
		// Clip Region sichern
		Push( PUSH_CLIPREGION );
		IntersectClipRegion( rRect );

        // because we draw with no border line, we have to expand gradient
        // rect to avoid missing lines on the right and bottom edge
        aRect.Left()--;
        aRect.Top()--;
        aRect.Right()++;
        aRect.Bottom()++;

		// we need a graphics
		if ( !mpGraphics )
		{
			if ( !ImplGetGraphics() )
				return;
		}

		if ( mbInitClipRegion )
			ImplInitClipRegion();

		if ( !mbOutputClipped )
		{
			// Gradienten werden ohne Umrandung gezeichnet
			if ( mbLineColor || mbInitLineColor )
			{
				mpGraphics->SetLineColor();
				mbInitLineColor = sal_True;
			}

			mbInitFillColor = sal_True;

			// calculate step count if neccessary
			if ( !aGradient.GetSteps() )
				aGradient.SetSteps( GRADIENT_DEFAULT_STEPCOUNT );

            if( aGradient.GetStyle() == GRADIENT_LINEAR || aGradient.GetStyle() == GRADIENT_AXIAL )
    			ImplDrawLinearGradient( aRect, aGradient, sal_False, NULL );
            else
				ImplDrawComplexGradient( aRect, aGradient, sal_False, NULL );
		}

		Pop();
	}

    if( mpAlphaVDev )
    {
        // #i32109#: Make gradient area opaque
        mpAlphaVDev->ImplFillOpaqueRectangle( rRect );
    }
}

// -----------------------------------------------------------------------

void OutputDevice::DrawGradient( const PolyPolygon& rPolyPoly,
								 const Gradient& rGradient )
{
	DBG_TRACE( "OutputDevice::DrawGradient()" );
	DBG_CHKTHIS( OutputDevice, ImplDbgCheckOutputDevice );
	DBG_CHKOBJ( &rGradient, Gradient, NULL );

	if( mbInitClipRegion )
		ImplInitClipRegion();

	if( mbOutputClipped )
		return;

	if( !mpGraphics )
		if( !ImplGetGraphics() )
			return;

	if( rPolyPoly.Count() && rPolyPoly[ 0 ].GetSize() && !( mnDrawMode & DRAWMODE_NOGRADIENT ) )
	{
        if ( mnDrawMode & ( DRAWMODE_BLACKGRADIENT | DRAWMODE_WHITEGRADIENT | DRAWMODE_SETTINGSGRADIENT) )
	    {
		    Color aColor;

		    if ( mnDrawMode & DRAWMODE_BLACKGRADIENT )
                aColor = Color( COL_BLACK );
		    else if ( mnDrawMode & DRAWMODE_WHITEGRADIENT )
                aColor = Color( COL_WHITE );
            else if ( mnDrawMode & DRAWMODE_SETTINGSGRADIENT )
                aColor = GetSettings().GetStyleSettings().GetWindowColor();

		    if ( mnDrawMode & DRAWMODE_GHOSTEDGRADIENT )
            {
                aColor = Color( ( aColor.GetRed() >> 1 ) | 0x80,
						        ( aColor.GetGreen() >> 1 ) | 0x80,
						        ( aColor.GetBlue() >> 1 ) | 0x80 );
            }

		    Push( PUSH_LINECOLOR | PUSH_FILLCOLOR );
		    SetLineColor( aColor );
		    SetFillColor( aColor );
			DrawPolyPolygon( rPolyPoly );
		    Pop();
		    return;
	    }

		if( mpMetaFile )
		{
			const Rectangle	aRect( rPolyPoly.GetBoundRect() );

			mpMetaFile->AddAction( new MetaCommentAction( "XGRAD_SEQ_BEGIN" ) );
			mpMetaFile->AddAction( new MetaGradientExAction( rPolyPoly, rGradient ) );

			if( OUTDEV_PRINTER == meOutDevType )
			{
				Push( PUSH_CLIPREGION );
				IntersectClipRegion( rPolyPoly );
				DrawGradient( aRect, rGradient );
				Pop();
			}
			else
			{
				const sal_Bool	bOldOutput = IsOutputEnabled();

				EnableOutput( sal_False );
				Push( PUSH_RASTEROP );
				SetRasterOp( ROP_XOR );
				DrawGradient( aRect, rGradient );
				SetFillColor( COL_BLACK );
				SetRasterOp( ROP_0 );
				DrawPolyPolygon( rPolyPoly );
				SetRasterOp( ROP_XOR );
				DrawGradient( aRect, rGradient );
				Pop();
				EnableOutput( bOldOutput );
			}

			mpMetaFile->AddAction( new MetaCommentAction( "XGRAD_SEQ_END" ) );
		}

		if( !IsDeviceOutputNecessary() || ImplIsRecordLayout() )
			return;

		Gradient aGradient( rGradient );

		if ( mnDrawMode & ( DRAWMODE_GRAYGRADIENT | DRAWMODE_GHOSTEDGRADIENT ) )
		{
			Color aStartCol( aGradient.GetStartColor() );
			Color aEndCol( aGradient.GetEndColor() );

			if ( mnDrawMode & DRAWMODE_GRAYGRADIENT )
			{
				sal_uInt8 cStartLum = aStartCol.GetLuminance(), cEndLum = aEndCol.GetLuminance();
				aStartCol = Color( cStartLum, cStartLum, cStartLum );
				aEndCol = Color( cEndLum, cEndLum, cEndLum );
			}

			if ( mnDrawMode & DRAWMODE_GHOSTEDGRADIENT )
			{
				aStartCol = Color( ( aStartCol.GetRed() >> 1 ) | 0x80,
								   ( aStartCol.GetGreen() >> 1 ) | 0x80,
								   ( aStartCol.GetBlue() >> 1 ) | 0x80 );

				aEndCol = Color( ( aEndCol.GetRed() >> 1 ) | 0x80,
								 ( aEndCol.GetGreen() >> 1 ) | 0x80,
								 ( aEndCol.GetBlue() >> 1 ) | 0x80 );
			}

			aGradient.SetStartColor( aStartCol );
			aGradient.SetEndColor( aEndCol );
		}

        if( OUTDEV_PRINTER == meOutDevType || ImplGetSVData()->maGDIData.mbNoXORClipping )
		{
			const Rectangle	aBoundRect( rPolyPoly.GetBoundRect() );

			if( !Rectangle( PixelToLogic( Point() ), GetOutputSize() ).IsEmpty() )
			{
				// Rechteck in Pixel umrechnen
				Rectangle aRect( ImplLogicToDevicePixel( aBoundRect ) );
				aRect.Justify();

				// Wenn Rechteck leer ist, brauchen wir nichts machen
				if ( !aRect.IsEmpty() )
				{
					if( !mpGraphics && !ImplGetGraphics() )
						return;

					if( mbInitClipRegion )
						ImplInitClipRegion();

					if( !mbOutputClipped )
					{
						PolyPolygon aClipPolyPoly( ImplLogicToDevicePixel( rPolyPoly ) );

						// Gradienten werden ohne Umrandung gezeichnet
						if( mbLineColor || mbInitLineColor )
						{
							mpGraphics->SetLineColor();
							mbInitLineColor = sal_True;
						}

						mbInitFillColor = sal_True;

						// calculate step count if neccessary
						if ( !aGradient.GetSteps() )
							aGradient.SetSteps( GRADIENT_DEFAULT_STEPCOUNT );

                        if( aGradient.GetStyle() == GRADIENT_LINEAR || aGradient.GetStyle() == GRADIENT_AXIAL )
    		            	ImplDrawLinearGradient( aRect, aGradient, sal_False, &aClipPolyPoly );
                        else
				            ImplDrawComplexGradient( aRect, aGradient, sal_False, &aClipPolyPoly );
					}
				}
			}
		}
		else
		{
			const PolyPolygon	aPolyPoly( LogicToPixel( rPolyPoly ) );
			const Rectangle		aBoundRect( aPolyPoly.GetBoundRect() );
			Point aPoint;
			Rectangle			aDstRect( aPoint, GetOutputSizePixel() );

			aDstRect.Intersection( aBoundRect );

			if( OUTDEV_WINDOW == meOutDevType )
			{
				const Region aPaintRgn( ( (Window*) this )->GetPaintRegion() );

				if( !aPaintRgn.IsNull() )
					aDstRect.Intersection( LogicToPixel( aPaintRgn ).GetBoundRect() );
			}

			if( !aDstRect.IsEmpty() )
			{
				VirtualDevice*	pVDev;
				const Size		aDstSize( aDstRect.GetSize() );

                if( HasAlpha() )
                {
                    // #110958# Pay attention to alpha VDevs here, otherwise,
                    // background will be wrong: Temp VDev has to have alpha, too.
                    pVDev = new VirtualDevice( *this, 0, GetAlphaBitCount() > 1 ? 0 : 1 );
                }
                else
                {
                    // nothing special here. Plain VDev
                    pVDev = new VirtualDevice();
                }

				if( pVDev->SetOutputSizePixel( aDstSize) )
				{
					MapMode			aVDevMap;
					const sal_Bool		bOldMap = mbMap;

					EnableMapMode( sal_False );

					pVDev->DrawOutDev( Point(), aDstSize, aDstRect.TopLeft(), aDstSize, *this );
					pVDev->SetRasterOp( ROP_XOR );
					aVDevMap.SetOrigin( Point( -aDstRect.Left(), -aDstRect.Top() ) );
					pVDev->SetMapMode( aVDevMap );
					pVDev->DrawGradient( aBoundRect, aGradient );
					pVDev->SetFillColor( COL_BLACK );
					pVDev->SetRasterOp( ROP_0 );
					pVDev->DrawPolyPolygon( aPolyPoly );
					pVDev->SetRasterOp( ROP_XOR );
					pVDev->DrawGradient( aBoundRect, aGradient );
					aVDevMap.SetOrigin( Point() );
					pVDev->SetMapMode( aVDevMap );
					DrawOutDev( aDstRect.TopLeft(), aDstSize, Point(), aDstSize, *pVDev );

					EnableMapMode( bOldMap );
				}

                delete pVDev;
			}
		}
	}

    if( mpAlphaVDev )
        mpAlphaVDev->DrawPolyPolygon( rPolyPoly );
}

// -----------------------------------------------------------------------

void OutputDevice::AddGradientActions( const Rectangle& rRect, const Gradient& rGradient,
									   GDIMetaFile& rMtf )
{
	DBG_CHKTHIS( OutputDevice, ImplDbgCheckOutputDevice );
	DBG_CHKOBJ( &rGradient, Gradient, NULL );

	Rectangle aRect( rRect );

	aRect.Justify();

	// Wenn Rechteck leer ist, brauchen wir nichts machen
	if ( !aRect.IsEmpty() )
	{
		Gradient		aGradient( rGradient );
		GDIMetaFile*	pOldMtf = mpMetaFile;

		mpMetaFile = &rMtf;
		mpMetaFile->AddAction( new MetaPushAction( PUSH_ALL ) );
		mpMetaFile->AddAction( new MetaISectRectClipRegionAction( aRect ) );
		mpMetaFile->AddAction( new MetaLineColorAction( Color(), sal_False ) );

        // because we draw with no border line, we have to expand gradient
        // rect to avoid missing lines on the right and bottom edge
        aRect.Left()--;
        aRect.Top()--;
        aRect.Right()++;
        aRect.Bottom()++;

		// calculate step count if neccessary
		if ( !aGradient.GetSteps() )
			aGradient.SetSteps( GRADIENT_DEFAULT_STEPCOUNT );

        if( aGradient.GetStyle() == GRADIENT_LINEAR || aGradient.GetStyle() == GRADIENT_AXIAL )
    		ImplDrawLinearGradient( aRect, aGradient, sal_True, NULL );
        else
			ImplDrawComplexGradient( aRect, aGradient, sal_True, NULL );

		mpMetaFile->AddAction( new MetaPopAction() );
		mpMetaFile = pOldMtf;
	}
}

// -----------------------------------------------------------------------

void OutputDevice::DrawHatch( const PolyPolygon& rPolyPoly, const Hatch& rHatch )
{
	DBG_TRACE( "OutputDevice::DrawHatch()" );
	DBG_CHKTHIS( OutputDevice, ImplDbgCheckOutputDevice );

	Hatch aHatch( rHatch );

	if ( mnDrawMode & ( DRAWMODE_BLACKLINE | DRAWMODE_WHITELINE |
						DRAWMODE_GRAYLINE | DRAWMODE_GHOSTEDLINE |
                        DRAWMODE_SETTINGSLINE ) )
	{
		Color aColor( rHatch.GetColor() );

		if ( mnDrawMode & DRAWMODE_BLACKLINE )
			aColor = Color( COL_BLACK );
		else if ( mnDrawMode & DRAWMODE_WHITELINE )
			aColor = Color( COL_WHITE );
		else if ( mnDrawMode & DRAWMODE_GRAYLINE )
		{
			const sal_uInt8 cLum = aColor.GetLuminance();
			aColor = Color( cLum, cLum, cLum );
		}
        else if( mnDrawMode & DRAWMODE_SETTINGSLINE )
        {
            aColor = GetSettings().GetStyleSettings().GetFontColor();
        }

		if ( mnDrawMode & DRAWMODE_GHOSTEDLINE )
		{
			aColor = Color( ( aColor.GetRed() >> 1 ) | 0x80,
							( aColor.GetGreen() >> 1 ) | 0x80,
							( aColor.GetBlue() >> 1 ) | 0x80);
		}

		aHatch.SetColor( aColor );
	}

	if( mpMetaFile )
		mpMetaFile->AddAction( new MetaHatchAction( rPolyPoly, aHatch ) );

	if( !IsDeviceOutputNecessary() || ImplIsRecordLayout() )
		return;

	if( !mpGraphics && !ImplGetGraphics() )
		return;

	if( mbInitClipRegion )
		ImplInitClipRegion();

	if( mbOutputClipped )
		return;

	if( rPolyPoly.Count() )
	{
		PolyPolygon		aPolyPoly( LogicToPixel( rPolyPoly ) );
		GDIMetaFile*	pOldMetaFile = mpMetaFile;
		sal_Bool			bOldMap = mbMap;

		aPolyPoly.Optimize( POLY_OPTIMIZE_NO_SAME );
        aHatch.SetDistance( ImplLogicWidthToDevicePixel( aHatch.GetDistance() ) );

		mpMetaFile = NULL;
		EnableMapMode( sal_False );
		Push( PUSH_LINECOLOR );
		SetLineColor( aHatch.GetColor() );
		ImplInitLineColor();
		ImplDrawHatch( aPolyPoly, aHatch, sal_False );
		Pop();
		EnableMapMode( bOldMap );
		mpMetaFile = pOldMetaFile;
	}

    if( mpAlphaVDev )
        mpAlphaVDev->DrawHatch( rPolyPoly, rHatch );
}

// -----------------------------------------------------------------------

void OutputDevice::AddHatchActions( const PolyPolygon& rPolyPoly, const Hatch& rHatch,
									GDIMetaFile& rMtf )
{
	DBG_CHKTHIS( OutputDevice, ImplDbgCheckOutputDevice );

	PolyPolygon	aPolyPoly( rPolyPoly );
	aPolyPoly.Optimize( POLY_OPTIMIZE_NO_SAME | POLY_OPTIMIZE_CLOSE );

	if( aPolyPoly.Count() )
	{
		GDIMetaFile* pOldMtf = mpMetaFile;

		mpMetaFile = &rMtf;
		mpMetaFile->AddAction( new MetaPushAction( PUSH_ALL ) );
		mpMetaFile->AddAction( new MetaLineColorAction( rHatch.GetColor(), sal_True ) );
		ImplDrawHatch( aPolyPoly, rHatch, sal_True );
		mpMetaFile->AddAction( new MetaPopAction() );
		mpMetaFile = pOldMtf;
	}
}

// -----------------------------------------------------------------------

void OutputDevice::ImplDrawHatch( const PolyPolygon& rPolyPoly, const Hatch& rHatch, sal_Bool bMtf )
{
    if(rPolyPoly.Count())
    {
        // #115630# ImplDrawHatch does not work with beziers included in the polypolygon, take care of that
        bool bIsCurve(false);

        for(sal_uInt16 a(0); !bIsCurve && a < rPolyPoly.Count(); a++)
        {
            if(rPolyPoly[a].HasFlags())
            {
                bIsCurve = true;
            }
        }

        if(bIsCurve)
        {
            OSL_ENSURE(false, "ImplDrawHatch does *not* support curves, falling back to AdaptiveSubdivide()...");
            PolyPolygon aPolyPoly;

            rPolyPoly.AdaptiveSubdivide(aPolyPoly);
            ImplDrawHatch(aPolyPoly, rHatch, bMtf);
        }
        else
        {
	        Rectangle	aRect( rPolyPoly.GetBoundRect() );
	        const long	nLogPixelWidth = ImplDevicePixelToLogicWidth( 1 );
	        const long	nWidth = ImplDevicePixelToLogicWidth( Max( ImplLogicWidthToDevicePixel( rHatch.GetDistance() ), 3L ) );
	        Point*		pPtBuffer = new Point[ HATCH_MAXPOINTS ];
	        Point		aPt1, aPt2, aEndPt1;
	        Size		aInc;

	        // Single hatch
	        aRect.Left() -= nLogPixelWidth; aRect.Top() -= nLogPixelWidth; aRect.Right() += nLogPixelWidth; aRect.Bottom() += nLogPixelWidth;
	        ImplCalcHatchValues( aRect, nWidth, rHatch.GetAngle(), aPt1, aPt2, aInc, aEndPt1 );
	        do
	        {
		        ImplDrawHatchLine( Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer, bMtf );
		        aPt1.X() += aInc.Width(); aPt1.Y() += aInc.Height();
		        aPt2.X() += aInc.Width(); aPt2.Y() += aInc.Height();
	        }
	        while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) );

	        if( ( rHatch.GetStyle() == HATCH_DOUBLE ) || ( rHatch.GetStyle() == HATCH_TRIPLE ) )
	        {
		        // Double hatch
		        ImplCalcHatchValues( aRect, nWidth, rHatch.GetAngle() + 900, aPt1, aPt2, aInc, aEndPt1 );
		        do
		        {
			        ImplDrawHatchLine( Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer, bMtf );
			        aPt1.X() += aInc.Width(); aPt1.Y() += aInc.Height();
			        aPt2.X() += aInc.Width(); aPt2.Y() += aInc.Height();
		        }
		        while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) );

		        if( rHatch.GetStyle() == HATCH_TRIPLE )
		        {
			        // Triple hatch
			        ImplCalcHatchValues( aRect, nWidth, rHatch.GetAngle() + 450, aPt1, aPt2, aInc, aEndPt1 );
			        do
			        {
				        ImplDrawHatchLine( Line( aPt1, aPt2 ), rPolyPoly, pPtBuffer, bMtf );
				        aPt1.X() += aInc.Width(); aPt1.Y() += aInc.Height();
				        aPt2.X() += aInc.Width(); aPt2.Y() += aInc.Height();
			        }
			        while( ( aPt1.X() <= aEndPt1.X() ) && ( aPt1.Y() <= aEndPt1.Y() ) );
		        }
	        }

	        delete[] pPtBuffer;
        }
    }
}

// -----------------------------------------------------------------------

void OutputDevice::ImplCalcHatchValues( const Rectangle& rRect, long nDist, sal_uInt16 nAngle10,
										Point& rPt1, Point& rPt2, Size& rInc, Point& rEndPt1 )
{
	Point	aRef;
	long	nAngle = nAngle10 % 1800;
	long	nOffset = 0;

	if( nAngle > 900 )
		nAngle -= 1800;

	aRef = ( !IsRefPoint() ? rRect.TopLeft() : GetRefPoint() );

	if( 0 == nAngle )
	{
		rInc = Size( 0, nDist );
		rPt1 = rRect.TopLeft();
		rPt2 = rRect.TopRight();
		rEndPt1 = rRect.BottomLeft();

		if( aRef.Y() <= rRect.Top() )
			nOffset = ( ( rRect.Top() - aRef.Y() ) % nDist );
		else
			nOffset = ( nDist - ( ( aRef.Y() - rRect.Top() ) % nDist ) );

		rPt1.Y() -= nOffset;
		rPt2.Y() -= nOffset;
	}
	else if( 900 == nAngle )
	{
		rInc = Size( nDist, 0 );
		rPt1 = rRect.TopLeft();
		rPt2 = rRect.BottomLeft();
		rEndPt1 = rRect.TopRight();

		if( aRef.X() <= rRect.Left() )
			nOffset = ( rRect.Left() - aRef.X() ) % nDist;
		else
			nOffset = nDist - ( ( aRef.X() - rRect.Left() ) % nDist );

		rPt1.X() -= nOffset;
		rPt2.X() -= nOffset;
	}
	else if( nAngle >= -450 && nAngle <= 450 )
	{
		const double	fAngle = F_PI1800 * labs( nAngle );
		const double	fTan = tan( fAngle );
		const long		nYOff = FRound( ( rRect.Right() - rRect.Left() ) * fTan );
		long			nPY;

		rInc = Size( 0, nDist = FRound( nDist / cos( fAngle ) ) );

		if( nAngle > 0 )
		{
			rPt1 = rRect.TopLeft();
			rPt2 = Point( rRect.Right(), rRect.Top() - nYOff );
			rEndPt1 = Point( rRect.Left(), rRect.Bottom() + nYOff );
			nPY = FRound( aRef.Y() - ( ( rPt1.X() - aRef.X() ) * fTan ) );
		}
		else
		{
			rPt1 = rRect.TopRight();
			rPt2 = Point( rRect.Left(), rRect.Top() - nYOff );
			rEndPt1 = Point( rRect.Right(), rRect.Bottom() + nYOff );
			nPY = FRound( aRef.Y() + ( ( rPt1.X() - aRef.X() ) * fTan ) );
		}

		if( nPY <= rPt1.Y() )
			nOffset = ( rPt1.Y() - nPY ) % nDist;
		else
			nOffset = nDist - ( ( nPY - rPt1.Y() ) % nDist );

		rPt1.Y() -= nOffset;
		rPt2.Y() -= nOffset;
	}
	else
	{
		const double fAngle = F_PI1800 * labs( nAngle );
		const double fTan = tan( fAngle );
		const long	 nXOff = FRound( ( rRect.Bottom() - rRect.Top() ) / fTan );
		long		 nPX;

		rInc = Size( nDist = FRound( nDist / sin( fAngle ) ), 0 );

		if( nAngle > 0 )
		{
			rPt1 = rRect.TopLeft();
			rPt2 = Point( rRect.Left() - nXOff, rRect.Bottom() );
			rEndPt1 = Point( rRect.Right() + nXOff, rRect.Top() );
			nPX = FRound( aRef.X() - ( ( rPt1.Y() - aRef.Y() ) / fTan ) );
		}
		else
		{
			rPt1 = rRect.BottomLeft();
			rPt2 = Point( rRect.Left() - nXOff, rRect.Top() );
			rEndPt1 = Point( rRect.Right() + nXOff, rRect.Bottom() );
			nPX = FRound( aRef.X() + ( ( rPt1.Y() - aRef.Y() ) / fTan ) );
		}

		if( nPX <= rPt1.X() )
			nOffset = ( rPt1.X() - nPX ) % nDist;
		else
			nOffset = nDist - ( ( nPX - rPt1.X() ) % nDist );

		rPt1.X() -= nOffset;
		rPt2.X() -= nOffset;
	}
}

// ------------------------------------------------------------------------

void OutputDevice::ImplDrawHatchLine( const Line& rLine, const PolyPolygon& rPolyPoly,
									  Point* pPtBuffer, sal_Bool bMtf )
{
	double	fX, fY;
	long	nAdd, nPCounter = 0;

	for( long nPoly = 0, nPolyCount = rPolyPoly.Count(); nPoly < nPolyCount; nPoly++ )
	{
		const Polygon& rPoly = rPolyPoly[ (sal_uInt16) nPoly ];

		if( rPoly.GetSize() > 1 )
		{
			Line	aCurSegment( rPoly[ 0 ], Point() );

			for( long i = 1, nCount = rPoly.GetSize(); i <= nCount; i++ )
			{
				aCurSegment.SetEnd( rPoly[ (sal_uInt16)( i % nCount ) ] );
				nAdd = 0;

				if( rLine.Intersection( aCurSegment, fX, fY ) )
				{
					if( ( fabs( fX - aCurSegment.GetStart().X() ) <= 0.0000001 ) &&
						( fabs( fY - aCurSegment.GetStart().Y() ) <= 0.0000001 ) )
					{
						const Line		aPrevSegment( rPoly[ (sal_uInt16)( ( i > 1 ) ? ( i - 2 ) : ( nCount - 1 ) ) ], aCurSegment.GetStart() );
						const double	fPrevDistance = rLine.GetDistance( aPrevSegment.GetStart() );
						const double	fCurDistance = rLine.GetDistance( aCurSegment.GetEnd() );

						if( ( fPrevDistance <= 0.0 && fCurDistance > 0.0 ) ||
							( fPrevDistance > 0.0 && fCurDistance < 0.0 ) )
						{
							nAdd = 1;
						}
					}
					else if( ( fabs( fX - aCurSegment.GetEnd().X() ) <= 0.0000001 ) &&
							 ( fabs( fY - aCurSegment.GetEnd().Y() ) <= 0.0000001 ) )
					{
						const Line aNextSegment( aCurSegment.GetEnd(), rPoly[ (sal_uInt16)( ( i + 1 ) % nCount ) ] );

						if( ( fabs( rLine.GetDistance( aNextSegment.GetEnd() ) ) <= 0.0000001 ) &&
							( rLine.GetDistance( aCurSegment.GetStart() ) > 0.0 ) )
						{
							nAdd = 1;
						}
					}
					else
						nAdd = 1;

					if( nAdd )
						pPtBuffer[ nPCounter++ ] = Point( FRound( fX ), FRound( fY ) );
				}

				aCurSegment.SetStart( aCurSegment.GetEnd() );
			}
		}
	}

	if( nPCounter > 1 )
	{
		qsort( pPtBuffer, nPCounter, sizeof( Point ), ImplHatchCmpFnc );

		if( nPCounter & 1 )
			nPCounter--;

		if( bMtf )
		{
			for( long i = 0; i < nPCounter; i += 2 )
				mpMetaFile->AddAction( new MetaLineAction( pPtBuffer[ i ], pPtBuffer[ i + 1 ] ) );
		}
		else
		{
			for( long i = 0; i < nPCounter; i += 2 )
			{
                if( mpPDFWriter )
                {
                    mpPDFWriter->drawLine( pPtBuffer[ i ], pPtBuffer[ i+1 ] );
                }
                else
                {
                    const Point aPt1( ImplLogicToDevicePixel( pPtBuffer[ i ] ) );
                    const Point aPt2( ImplLogicToDevicePixel( pPtBuffer[ i + 1 ] ) );
                    mpGraphics->DrawLine( aPt1.X(), aPt1.Y(), aPt2.X(), aPt2.Y(), this );
                }
			}
		}
	}
}