xref: /aoo42x/main/vcl/os2/source/gdi/salgdi2.cxx (revision 9f62ea84)

/**************************************************************
 *
 * 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.
 *
 *************************************************************/



#include <string.h>
#include <svpm.h>

#define _SV_SALGDI2_CXX
#include <salbmp.h>
#include <saldata.hxx>
#ifndef _SV_SALIDS_HRC
#include <salids.hrc>
#endif
#include <salgdi.h>
#include <salvd.h>
#include <vcl/salbtype.hxx>

#ifndef __H_FT2LIB
#include <wingdi.h>
#include <ft2lib.h>
#endif

BOOL bFastTransparent = FALSE;

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

#define RGBCOLOR( r, g, b ) ((ULONG)(((BYTE)(b)|((USHORT)(g)<<8))|(((ULONG)(BYTE)(r))<<16)))
#define TY( y ) 			(mnHeight-(y)-1)

// ---------------
// - SalGraphics -
// ---------------

bool Os2SalGraphics::supportsOperation( OutDevSupportType ) const
{
    return false;
}


void Os2SalGraphics::copyBits( const SalTwoRect* pPosAry, SalGraphics* pSrcGraphics )
{
	HPS 	hSrcPS;
	POINTL	thePoints[4];
	long	nSrcHeight;

	if ( pSrcGraphics )
	{
		//hSrcPS = pSrcGraphics->mhPS;
		//nSrcHeight = pSrcGraphics->mnHeight;
		hSrcPS = static_cast<Os2SalGraphics*>(pSrcGraphics)->mhPS;
		nSrcHeight = static_cast<Os2SalGraphics*>(pSrcGraphics)->mnHeight;
	}
	else
	{
		hSrcPS = mhPS;
		nSrcHeight = mnHeight;
	}

	// lower-left corner of target
	thePoints[0].x = pPosAry->mnDestX;
	thePoints[0].y = TY( pPosAry->mnDestY + pPosAry->mnDestHeight - 1 );

	// upper-right corner of target
	thePoints[1].x = pPosAry->mnDestX + pPosAry->mnDestWidth;
	thePoints[1].y = TY( pPosAry->mnDestY - 1 );

	// lower-left corner of source
	thePoints[2].x = pPosAry->mnSrcX;
	thePoints[2].y = nSrcHeight - ( pPosAry->mnSrcY + pPosAry->mnSrcHeight );

	if ( ( pPosAry->mnDestWidth != pPosAry->mnSrcWidth ) || ( pPosAry->mnDestHeight != pPosAry->mnSrcHeight ) )
	{
		// upper-right corner of Source
		thePoints[3].x = pPosAry->mnSrcX + pPosAry->mnSrcWidth;
		thePoints[3].y = nSrcHeight - pPosAry->mnSrcY + pPosAry->mnSrcHeight;

		GpiBitBlt( mhPS, hSrcPS, 4, thePoints,
				   mbXORMode ? ROP_SRCINVERT : ROP_SRCCOPY, BBO_IGNORE );
	}
	else
	{
		GpiBitBlt( mhPS, hSrcPS, 3, thePoints,
				   mbXORMode ? ROP_SRCINVERT : ROP_SRCCOPY, BBO_IGNORE );
	}
}

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

void Os2SalGraphics::copyArea( long nDestX, long nDestY,
							long nSrcX, long nSrcY,
							long nSrcWidth, long nSrcHeight,
							USHORT nFlags )
{
	POINTL thePoints[3];

	// lower-left corner of target
	thePoints[0].x = nDestX;
	thePoints[0].y = TY( nDestY + nSrcHeight - 1 );

	// upper-right corner of target
	thePoints[1].x = nDestX + nSrcWidth;
	thePoints[1].y = TY( nDestY - 1 );

	// lower-left corner of source
	thePoints[2].x = nSrcX;
	thePoints[2].y = TY( nSrcY + nSrcHeight - 1);

	if ( (nFlags & SAL_COPYAREA_WINDOWINVALIDATE) && mbWindow )
	{
		// Overlap-Bereich berechnen und invalidieren
		Point		aVCLSrcPos( nSrcX, nSrcY );
		Size		aVCLSrcSize( nSrcWidth, nSrcHeight );
		Rectangle	aVCLSrcRect( aVCLSrcPos, aVCLSrcSize );
		Rectangle	aVCLClipRect;
		SWP 		aSWP;

		WinQueryWindowPos( mhWnd, &aSWP );
		aVCLClipRect.Right()	= aSWP.cx-1;
		aVCLClipRect.Bottom()	= aSWP.cy-1;
		if ( !aVCLSrcRect.Intersection( aVCLClipRect ).IsEmpty() )
		{
			RECTL	aSrcRect;
			RECTL	aTempRect;
			HRGN	hInvalidateRgn;
			HRGN	hTempRgn;
			HWND	hWnd;
			long	nRgnType;

			long nVCLScrHeight	= aVCLSrcRect.GetHeight();
			aSrcRect.xLeft		= aVCLSrcRect.Left();
			aSrcRect.yBottom	= TY( aVCLSrcRect.Top()+nVCLScrHeight-1 );
			aSrcRect.xRight 	= aSrcRect.xLeft+aVCLSrcRect.GetWidth();
			aSrcRect.yTop		= aSrcRect.yBottom+nVCLScrHeight;

			// Rechteck in Screen-Koordinaaten umrechnen
			POINTL	aPt;
			long	nScreenDX = WinQuerySysValue( HWND_DESKTOP, SV_CXSCREEN );
			long	nScreenDY = WinQuerySysValue( HWND_DESKTOP, SV_CYSCREEN );
			aPt.x = 0;
			aPt.y = 0;
			WinMapWindowPoints( mhWnd, HWND_DESKTOP, &aPt, 1 );
			aSrcRect.xLeft	 += aPt.x;
			aSrcRect.yTop	 += aPt.y;
			aSrcRect.xRight  += aPt.x;
			aSrcRect.yBottom += aPt.y;
			hInvalidateRgn = 0;
			// Bereiche ausserhalb des sichtbaren Bereiches berechnen
			if ( aSrcRect.xLeft < 0 )
			{
				if ( !hInvalidateRgn )
					hInvalidateRgn = GpiCreateRegion( mhPS, 1, &aSrcRect );
				aTempRect.xLeft 	= -31999;
				aTempRect.yBottom	= 0;
				aTempRect.xRight	= 0;
				aTempRect.yTop		= 31999;
				hTempRgn = GpiCreateRegion( mhPS, 1, &aTempRect );
				GpiCombineRegion( mhPS, hInvalidateRgn, hInvalidateRgn, hTempRgn, CRGN_DIFF );
				GpiDestroyRegion( mhPS, hTempRgn );
			}
			if ( aSrcRect.yBottom < 0 )
			{
				if ( !hInvalidateRgn )
					hInvalidateRgn = GpiCreateRegion( mhPS, 1, &aSrcRect );
				aTempRect.xLeft 	= 0;
				aTempRect.yBottom	= -31999;
				aTempRect.xRight	= 31999;
				aTempRect.yTop		= 0;
				hTempRgn = GpiCreateRegion( mhPS, 1, &aTempRect );
				GpiCombineRegion( mhPS, hInvalidateRgn, hInvalidateRgn, hTempRgn, CRGN_DIFF );
				GpiDestroyRegion( mhPS, hTempRgn );
			}
			if ( aSrcRect.xRight > nScreenDX )
			{
				if ( !hInvalidateRgn )
					hInvalidateRgn = GpiCreateRegion( mhPS, 1, &aSrcRect );
				aTempRect.xLeft 	= nScreenDX;
				aTempRect.yBottom	= 0;
				aTempRect.xRight	= 31999;
				aTempRect.yTop		= 31999;
				hTempRgn = GpiCreateRegion( mhPS, 1, &aTempRect );
				GpiCombineRegion( mhPS, hInvalidateRgn, hInvalidateRgn, hTempRgn, CRGN_DIFF );
				GpiDestroyRegion( mhPS, hTempRgn );
			}
			if ( aSrcRect.yTop > nScreenDY )
			{
				if ( !hInvalidateRgn )
					hInvalidateRgn = GpiCreateRegion( mhPS, 1, &aSrcRect );
				aTempRect.xLeft 	= 0;
				aTempRect.yBottom	= nScreenDY;
				aTempRect.xRight	= 31999;
				aTempRect.yTop		= 31999;
				hTempRgn = GpiCreateRegion( mhPS, 1, &aTempRect );
				GpiCombineRegion( mhPS, hInvalidateRgn, hInvalidateRgn, hTempRgn, CRGN_DIFF );
				GpiDestroyRegion( mhPS, hTempRgn );
			}

			// Bereiche die von anderen Fenstern ueberlagert werden berechnen
			// Calculate areas that are overlapped by other windows
			HWND hWndParent = WinQueryWindow( mhWnd, QW_PARENT );
			hWnd = WinQueryWindow( HWND_DESKTOP, QW_TOP );
			aVCLSrcRect = Rectangle( aSrcRect.xLeft, aSrcRect.yBottom, aSrcRect.xRight, aSrcRect.yTop );
			while ( hWnd )
			{
				if ( hWnd == hWndParent )
					break;
				if ( WinIsWindowVisible( hWnd ) )
				{
					WinQueryWindowPos( hWnd, &aSWP );
					if ( !(aSWP.fl & SWP_MINIMIZE) )
					{
						aVCLClipRect = Rectangle( Point( aSWP.x, aSWP.y ), Size( aSWP.cx, aSWP.cy ) );
						if ( aVCLSrcRect.IsOver( aVCLClipRect ) )
						{
							if ( !hInvalidateRgn )
								hInvalidateRgn = GpiCreateRegion( mhPS, 1, &aSrcRect );
							aTempRect.xLeft 	= aSWP.x;
							aTempRect.yBottom	= aSWP.y;
							aTempRect.xRight	= aTempRect.xLeft+aSWP.cx;
							aTempRect.yTop		= aTempRect.yBottom+aSWP.cy;
							hTempRgn = GpiCreateRegion( mhPS, 1, &aTempRect );
							GpiCombineRegion( mhPS, hInvalidateRgn, hInvalidateRgn, hTempRgn, CRGN_DIFF );
							GpiDestroyRegion( mhPS, hTempRgn );
						}
					}
				}
				hWnd = WinQueryWindow( hWnd, QW_NEXT );
			}

			if ( hInvalidateRgn )
			{
				hTempRgn = GpiCreateRegion( mhPS, 1, &aSrcRect );
				nRgnType = GpiCombineRegion( mhPS, hInvalidateRgn, hTempRgn, hInvalidateRgn, CRGN_DIFF );
				GpiDestroyRegion( mhPS, hTempRgn );
				if ( (nRgnType != RGN_ERROR) && (nRgnType != RGN_NULL) )
				{
					long nOffX = (nDestX-nSrcX);
					long nOffY = (nSrcY-nDestY);
					aPt.x = nOffX-aPt.x;
					aPt.y = nOffY-aPt.y;
					GpiOffsetRegion( mhPS, hInvalidateRgn, &aPt );
					WinInvalidateRegion( mhWnd, hInvalidateRgn, TRUE );
					// Hier loesen wir nur ein Update aus, wenn es der
					// MainThread ist, damit es beim Bearbeiten der
					// Paint-Message keinen Deadlock gibt, da der
					// SolarMutex durch diesen Thread schon gelockt ist
					SalData*	pSalData = GetSalData();
					ULONG		nCurThreadId = GetCurrentThreadId();
					if ( pSalData->mnAppThreadId == nCurThreadId )
						WinUpdateWindow( mhWnd );
				}
				GpiDestroyRegion( mhPS, hInvalidateRgn );
			}
		}
	}

	GpiBitBlt( mhPS, mhPS, 3, thePoints,
			   ROP_SRCCOPY, BBO_IGNORE );

}

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

void ImplDrawBitmap( HPS hPS, long nScreenHeight,
					 const SalTwoRect* pPosAry, const Os2SalBitmap& rSalBitmap,
					 BOOL bPrinter, int nDrawMode )
{
	if( hPS )
	{
		HANDLE		hDrawDIB;
		HBITMAP 	hDrawDDB = rSalBitmap.ImplGethDDB();
		Os2SalBitmap*	pTmpSalBmp = NULL;
		BOOL		bPrintDDB = ( bPrinter && hDrawDDB );
		BOOL		bDrawDDB1 = ( ( rSalBitmap.GetBitCount() == 1 ) && hDrawDDB );

		if( bPrintDDB || bDrawDDB1 )
		{
			pTmpSalBmp = new Os2SalBitmap;
			pTmpSalBmp->Create( rSalBitmap, rSalBitmap.GetBitCount() );
			hDrawDIB = pTmpSalBmp->ImplGethDIB();
		}
		else
			hDrawDIB = rSalBitmap.ImplGethDIB();

		if( hDrawDIB )
		{
			HANDLE				hSubst = rSalBitmap.ImplGethDIB1Subst();
			POINTL				pts[ 4 ];
			BITMAPINFO2*		pBI = (BITMAPINFO2*) hDrawDIB;
			BITMAPINFOHEADER2*	pBIH = (BITMAPINFOHEADER2*) pBI;
			const long			nHeight = pBIH->cy;
			long				nInfoSize = *(ULONG*) pBI + rSalBitmap.ImplGetDIBColorCount( hDrawDIB ) * sizeof( RGB2 );
			BYTE*				pBits = (BYTE*) pBI + nInfoSize;

			pts[0].x = pPosAry->mnDestX;
			pts[0].y = nScreenHeight - pPosAry->mnDestY - pPosAry->mnDestHeight;
			pts[1].x = pPosAry->mnDestX + pPosAry->mnDestWidth - 1;
			pts[1].y = nScreenHeight - pPosAry->mnDestY - 1;

			pts[2].x = pPosAry->mnSrcX;
			pts[2].y = nHeight - ( pPosAry->mnSrcY + pPosAry->mnSrcHeight );
			pts[3].x = pPosAry->mnSrcX + pPosAry->mnSrcWidth;
			pts[3].y = nHeight - pPosAry->mnSrcY;

			// if we've got a 1Bit DIB, we create a 4Bit substitute
			if( ( pBIH->cBitCount == 1 ) && !hSubst )
			{
				// create 4Bit substitute
				hSubst = Os2SalBitmap::ImplCreateDIB4FromDIB1( hDrawDIB );

				// replace substitute only, if it is no temporary SalBitmap
				if( !( bPrintDDB || bDrawDDB1 ) )
					( (Os2SalBitmap&) rSalBitmap ).ImplReplacehDIB1Subst( hSubst );
			}

			if( hSubst )
			{
				pBI = (BITMAPINFO2*) hSubst;
				pBIH = (BITMAPINFOHEADER2*) pBI;
				nInfoSize = *(ULONG*) pBI + rSalBitmap.ImplGetDIBColorCount( hSubst ) * sizeof( RGB2 );
				pBits = (BYTE*) pBI + nInfoSize;
			}

			if( bPrinter )
			{
				BYTE* pDummy;

				// expand 8Bit-DIB's to 24Bit-DIB's, because some printer drivers
				// have problems to print these DIB's (strange)
				if( pBIH->cBitCount == 8 && pBIH->ulCompression == BCA_UNCOMP )
				{
					const long			nWidth = pBIH->cx;
					const long			nHeight = pBIH->cy;
					const long			nWidthAl8 = AlignedWidth4Bytes( nWidth * 8 );
					const long			nWidthAl24 = AlignedWidth4Bytes( nWidth * 24 );
					const long			nNewImageSize = nHeight * nWidthAl24;
					BITMAPINFOHEADER2*	pNewInfo;

					pDummy = new BYTE[ sizeof( BITMAPINFO2 ) + nNewImageSize ];
					memset( pDummy, 0, sizeof( BITMAPINFO2 ) );

					pNewInfo = (BITMAPINFOHEADER2*) pDummy;
					pNewInfo->cbFix = sizeof( BITMAPINFOHEADER2 );
					pNewInfo->cx = nWidth;
					pNewInfo->cy = nHeight;
					pNewInfo->cPlanes = 1;
					pNewInfo->cBitCount = 24;
					pNewInfo->ulCompression = BCA_UNCOMP;
					pNewInfo->cbImage = nNewImageSize;

					BYTE* pBitsSrc = (BYTE*) pBIH + nInfoSize;
					BYTE* pBitsDst = pDummy + sizeof( BITMAPINFO2 );

					for( long nY = 0UL; nY < nHeight; nY++ )
					{
						BYTE* pSrcLine = pBitsSrc + nY * nWidthAl8;
						BYTE* pDstLine = pBitsDst + nY * nWidthAl24;

						for( long nX = 0UL; nX < nWidth; nX++ )
						{
							const RGB2& rQuad = pBI->argbColor[ *pSrcLine++ ];

							*pDstLine++ = rQuad.bBlue;
							*pDstLine++ = rQuad.bGreen;
							*pDstLine++ = rQuad.bRed;
						}
					}

					nInfoSize = sizeof( BITMAPINFO2 );
				}
				else
				{
					const long nImageSize = ( pBIH->cbImage ? pBIH->cbImage : ( pBIH->cy * AlignedWidth4Bytes( pBIH->cx * pBIH->cBitCount ) ) );
					const long nTotalSize = nInfoSize + nImageSize;

					pDummy = new BYTE[ nTotalSize ];
					memcpy( pDummy, pBI, nTotalSize );
				}

				GpiDrawBits( hPS, pDummy + nInfoSize, (BITMAPINFO2*) pDummy, 4L, pts, nDrawMode, BBO_IGNORE );
				delete[] pDummy;
			}
			else
				GpiDrawBits( hPS, pBits, pBI, 4L, pts, nDrawMode, BBO_IGNORE );
		}
		else if( hDrawDDB && !bPrintDDB )
		{
			POINTL pts[ 4 ];

			pts[0].x = pPosAry->mnDestX;
			pts[0].y = nScreenHeight - pPosAry->mnDestY - pPosAry->mnDestHeight;
			pts[1].x = pPosAry->mnDestX + pPosAry->mnDestWidth - 1;
			pts[1].y = nScreenHeight - pPosAry->mnDestY - 1;

			pts[2].x = pPosAry->mnSrcX;
			pts[2].y = rSalBitmap.GetSize().Height() - ( pPosAry->mnSrcY + pPosAry->mnSrcHeight );
			pts[3].x = pPosAry->mnSrcX + pPosAry->mnSrcWidth;
			pts[3].y = rSalBitmap.GetSize().Height() - pPosAry->mnSrcY;

			GpiWCBitBlt( hPS, hDrawDDB, 4L, pts, nDrawMode, BBO_IGNORE );
/*
			HPS hDrawPS = ImplGetCachedPS( CACHED_HPS_DRAW, hDrawDDB );
			Ft2BitBlt( hPS, hDrawPS, 4, pts, nDrawMode, BBO_IGNORE );
			ImplReleaseCachedPS( CACHED_HPS_DRAW );
*/
		}

		if( bPrintDDB || bDrawDDB1 )
			delete pTmpSalBmp;
	}
}

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

void Os2SalGraphics::drawBitmap( const SalTwoRect* pPosAry,
							  const SalBitmap& rSalBitmap )
{
	ImplDrawBitmap( mhPS, mnHeight,
					pPosAry, static_cast<const Os2SalBitmap&>(rSalBitmap),
					mbPrinter,
					mbXORMode ? ROP_SRCINVERT : ROP_SRCCOPY );
}

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

void Os2SalGraphics::drawBitmap( const SalTwoRect* pPosAry,
							  const SalBitmap& rSalBitmap,
							  SalColor nTransparentColor )
{
	DBG_ASSERT( !mbPrinter, "No transparency print possible!" );
    //const Os2SalBitmap& rSalBitmap = static_cast<const Os2SalBitmap&>(rSSalBitmap);
	// an FM: kann erst einmal unberuecksichtigt bleiben
	drawBitmap( pPosAry, rSalBitmap );
}

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

void Os2SalGraphics::drawBitmap( const SalTwoRect* pPosAry,
							  const SalBitmap& rSSalBitmap,
							  const SalBitmap& rSTransparentBitmap )
{
	DBG_ASSERT( !mbPrinter, "No transparency print possible!" );

    const Os2SalBitmap& rSalBitmap = static_cast<const Os2SalBitmap&>(rSSalBitmap);
    const Os2SalBitmap& rTransparentBitmap = static_cast<const Os2SalBitmap&>(rSTransparentBitmap);

	if( bFastTransparent )
	{
		ImplDrawBitmap( mhPS, mnHeight, pPosAry, rTransparentBitmap, FALSE, ROP_SRCAND );
		ImplDrawBitmap( mhPS, mnHeight, pPosAry, rSalBitmap, FALSE, ROP_SRCPAINT );
	}
	else
	{
		SalTwoRect		aPosAry = *pPosAry;
		int 			nDstX = (int) aPosAry.mnDestX;
		int 			nDstY = (int) aPosAry.mnDestY;
		int 			nDstWidth = (int) aPosAry.mnDestWidth;
		int 			nDstHeight = (int) aPosAry.mnDestHeight;
		HAB 			hAB = GetSalData()->mhAB;
		HPS 			hPS = mhPS;
		DEVOPENSTRUC	aDevOpenStruc = { NULL, (PSZ)"DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
		SIZEL			aSizeL = { nDstWidth, nDstHeight };
		POINTL			aPtL[ 3 ];

		HDC 			   hMemDC = DevOpenDC( hAB, OD_MEMORY, (PSZ)"*", 5L, (PDEVOPENDATA)&aDevOpenStruc, 0 );
		HPS 			   hMemPS = Ft2CreatePS( hAB, hMemDC, &aSizeL, GPIT_MICRO | GPIA_ASSOC | PU_PELS );
		HBITMAP 		   hMemBitmap = ImplCreateVirDevBitmap( hMemDC, hMemPS, nDstWidth, nDstHeight, 0 );
		HBITMAP 		   hMemOld = (HBITMAP) Ft2SetBitmap( hMemPS, hMemBitmap );
		HDC 			   hMaskDC = DevOpenDC( hAB, OD_MEMORY, (PSZ)"*", 5L, (PDEVOPENDATA)&aDevOpenStruc, 0 );
		HPS 			   hMaskPS = Ft2CreatePS( hAB, hMaskDC, &aSizeL, GPIT_MICRO | GPIA_ASSOC | PU_PELS );
		HBITMAP 		   hMaskBitmap = ImplCreateVirDevBitmap( hMaskDC, hMaskPS, nDstWidth, nDstHeight, 0 );
		HBITMAP 		   hMaskOld = (HBITMAP) Ft2SetBitmap( hMaskPS, hMaskBitmap );
/*
		HPS hMemPS = ImplGetCachedPS( CACHED_HPS_1, 0 );
		HPS hMaskPS = ImplGetCachedPS( CACHED_HPS_2, 0 );
*/
		aPosAry.mnDestX = aPosAry.mnDestY = 0L;

		aPtL[ 0 ].x = 0;
		aPtL[ 0 ].y = 0;
		aPtL[ 1 ].x = nDstWidth;
		aPtL[ 1 ].y = nDstHeight;
		aPtL[ 2 ].x = nDstX;
		aPtL[ 2 ].y = TY( nDstY + nDstHeight - 1 );

		GpiBitBlt( hMemPS, hPS, 3, aPtL, ROP_SRCCOPY, BBO_IGNORE );
		ImplDrawBitmap( hMaskPS, nDstHeight, &aPosAry, rTransparentBitmap, FALSE, ROP_SRCCOPY );

		aPtL[ 2 ].x = 0;
		aPtL[ 2 ].y = 0;

		GpiBitBlt( hMemPS, hMaskPS, 3, aPtL, ROP_SRCAND, BBO_IGNORE );
		ImplDrawBitmap( hMaskPS, nDstHeight, &aPosAry, rSalBitmap, FALSE, ROP_SRCERASE );
		GpiBitBlt( hMemPS, hMaskPS, 3, aPtL, ROP_SRCPAINT, BBO_IGNORE );

		aPtL[ 0 ].x = nDstX;
		aPtL[ 0 ].y = TY( nDstY + nDstHeight - 1 );
		aPtL[ 1 ].x = nDstX + nDstWidth;
		aPtL[ 1 ].y = TY( nDstY - 1 );

		GpiBitBlt( hPS, hMemPS, 3, aPtL, ROP_SRCCOPY, BBO_IGNORE );

		Ft2SetBitmap( hMaskPS, hMaskOld );
		Ft2DestroyPS( hMaskPS );
		DevCloseDC( hMaskDC );
		GpiDeleteBitmap( hMaskBitmap );

		Ft2SetBitmap( hMemPS, hMemOld );
		Ft2DestroyPS( hMemPS );
		DevCloseDC( hMemDC );
		GpiDeleteBitmap( hMemBitmap );

/*
		ImplReleaseCachedPS( CACHED_HPS_1 );
		ImplReleaseCachedPS( CACHED_HPS_2 );
*/
	}
}

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

bool Os2SalGraphics::drawAlphaBitmap( const SalTwoRect& rTR,
				      const SalBitmap&  rSrcBitmap,
				      const SalBitmap&  rAlphaBmp )
{
	// TODO(P3) implement alpha blending
	return false;
}

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

bool Os2SalGraphics::drawAlphaRect( long nX, long nY, long nWidth,
                                    long nHeight, sal_uInt8 nTransparency )
{
	// TODO(P3) implement alpha blending
	return false;
}

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

void Os2SalGraphics::drawMask( const SalTwoRect* pPosAry,
							const SalBitmap& rSSalBitmap,
							SalColor nMaskColor )
{
	DBG_ASSERT( !mbPrinter, "No transparency print possible!" );

    const Os2SalBitmap& rSalBitmap = static_cast<const Os2SalBitmap&>(rSSalBitmap);

	SalTwoRect	aPosAry = *pPosAry;
	HPS 		hPS = mhPS;
	IMAGEBUNDLE aBundle, aOldBundle;
	AREABUNDLE	aAreaBundle, aOldAreaBundle;
	const ULONG    nColor = RGBCOLOR( SALCOLOR_RED( nMaskColor ),
									SALCOLOR_GREEN( nMaskColor ),
									SALCOLOR_BLUE( nMaskColor ) );

	GpiQueryAttrs( hPS, PRIM_IMAGE, IBB_COLOR | IBB_BACK_COLOR, &aOldBundle );
	aBundle.lColor = RGBCOLOR( 0, 0, 0 );
	aBundle.lBackColor = RGBCOLOR( 0xFF, 0xFF, 0xFF );
	Ft2SetAttrs( hPS, PRIM_IMAGE, IBB_COLOR | IBB_BACK_COLOR, 0, &aBundle );

	GpiQueryAttrs( hPS, PRIM_AREA, ABB_COLOR | ABB_BACK_COLOR | ABB_SYMBOL |
				   ABB_MIX_MODE | ABB_BACK_MIX_MODE, &aOldAreaBundle );
	aAreaBundle.lColor = nColor;
	aAreaBundle.lBackColor = nColor;
	aAreaBundle.usSymbol = PATSYM_SOLID;
	aAreaBundle.usMixMode = FM_OVERPAINT;
	aAreaBundle.usBackMixMode = BM_OVERPAINT;
	Ft2SetAttrs( hPS, PRIM_AREA, ABB_COLOR | ABB_BACK_COLOR | ABB_SYMBOL |
				 ABB_MIX_MODE | ABB_BACK_MIX_MODE, 0, &aAreaBundle );

	ImplDrawBitmap( hPS, mnHeight, &aPosAry, rSalBitmap, FALSE, 0x00B8L );

	Ft2SetAttrs( hPS, PRIM_IMAGE, IBB_COLOR | IBB_BACK_COLOR, 0, &aOldBundle );
	Ft2SetAttrs( hPS, PRIM_AREA, ABB_COLOR | ABB_BACK_COLOR | ABB_SYMBOL |
				 ABB_MIX_MODE | ABB_BACK_MIX_MODE, 0, &aOldAreaBundle );
}

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

SalBitmap* Os2SalGraphics::getBitmap( long nX, long nY, long nDX, long nDY )
{
	HAB 		   hAB = GetSalData()->mhAB;
	SIZEL		 size = { nDX, nDY };
	Os2SalBitmap*	  pSalBitmap = NULL;

	// create device context (at this time allways display compatible)
	DEVOPENSTRUC	aDevOpenStruc = { NULL, (PSZ)"DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
	HDC 			hMemDC = DevOpenDC( hAB, OD_MEMORY, (PSZ)"*", 5L, (PDEVOPENDATA)&aDevOpenStruc, 0 );
	HPS 			hMemPS = Ft2CreatePS( hAB, hMemDC, &size, GPIT_MICRO | GPIA_ASSOC | PU_PELS );
	HBITMAP 		hMemBmp = ImplCreateVirDevBitmap( hMemDC, hMemPS, nDX, nDY, 0 );
	HBITMAP 		hMemOld = Ft2SetBitmap( hMemPS, hMemBmp );

	// creation successfull?
	if( hMemDC && hMemPS && hMemBmp )
	{
		POINTL thePoints[ 3 ];

		// lower-left corner of target
		thePoints[ 0 ].x = 0;
		thePoints[ 0 ].y = 0;

		// upper-right corner of target
		thePoints[ 1 ].x = nDX;
		thePoints[ 1 ].y = nDY;

		// lower-left corner of source
		thePoints[ 2 ].x = nX;
		thePoints[ 2 ].y = TY( nY + nDY - 1 );

		long lHits = GpiBitBlt( hMemPS, mhPS, 3, thePoints,
								mbXORMode ? ROP_SRCINVERT : ROP_SRCCOPY, BBO_IGNORE );

		if( hMemPS )
		{
			Ft2SetBitmap( hMemPS, hMemOld );
			Ft2DestroyPS( hMemPS );
		}

		if( hMemDC )
			DevCloseDC( hMemDC );

		if( lHits == GPI_OK )
		{
			pSalBitmap = new Os2SalBitmap;

			if( !pSalBitmap->Create( hMemBmp, FALSE, FALSE ) )
			{
				delete pSalBitmap;
				pSalBitmap = NULL;
			}
		}
	}

	if( !pSalBitmap )
		GpiDeleteBitmap( hMemBmp );

	// return pointer to SAL-Bitmap
	return pSalBitmap;
}

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

SalColor Os2SalGraphics::getPixel( long nX, long nY )
{
	POINTL	  aPt = { nX, TY( nY ) };
	LONG	nColor = Ft2QueryPel( mhPS, &aPt );

	return MAKE_SALCOLOR( (BYTE) ( nColor >> 16 ), (BYTE) ( nColor >> 8 ), (BYTE) nColor );
}

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

void Os2SalGraphics::invert( long nX, long nY, long nWidth, long nHeight, SalInvert nFlags )
{
	if( nFlags & SAL_INVERT_TRACKFRAME )
	{
		// save old vylues
		LINEBUNDLE oldLb;
		LINEBUNDLE lb;
		GpiQueryAttrs( mhPS, PRIM_LINE, LBB_MIX_MODE | LBB_TYPE | LBB_COLOR, &oldLb );

		// set linetype to short dash
		lb.lColor = RGBCOLOR( 255, 255, 255 );
		lb.usMixMode = FM_XOR;
		lb.usType = LINETYPE_ALTERNATE;
		Ft2SetAttrs( mhPS, PRIM_LINE, LBB_MIX_MODE | LBB_TYPE | LBB_COLOR, 0, &lb );

		// draw inverted box
		POINTL aPt;

		aPt.x = nX;
		aPt.y = TY( nY );

		Ft2Move( mhPS, &aPt );

		aPt.x = nX + nWidth - 1;
		aPt.y = TY( nY + nHeight - 1 );

		Ft2Box( mhPS, DRO_OUTLINE, &aPt, 0, 0 );

		// restore old values
		Ft2SetAttrs( mhPS, PRIM_LINE, LBB_MIX_MODE | LBB_TYPE | LBB_COLOR, 0, &oldLb );

	}
	else
	{
		// save old values
		AREABUNDLE oldAb;
		AREABUNDLE ab;

		GpiQueryAttrs( mhPS, PRIM_AREA, ABB_COLOR | ABB_MIX_MODE | ABB_SYMBOL, &oldAb );

		// set fill color to black
		ab.lColor = RGBCOLOR( 255, 255, 255 );
		ab.usMixMode = FM_XOR;
		ab.usSymbol = (nFlags & SAL_INVERT_50) ? PATSYM_DENSE5 : PATSYM_SOLID;
		Ft2SetAttrs( mhPS, PRIM_AREA, ABB_COLOR | ABB_MIX_MODE | ABB_SYMBOL, 0, &ab );

		// draw inverted box
		POINTL aPt;

		aPt.x = nX;
		aPt.y = TY( nY );

		Ft2Move( mhPS, &aPt );

		aPt.x = nX + nWidth - 1;
		aPt.y = TY( nY + nHeight - 1 );

		Ft2Box( mhPS, DRO_FILL, &aPt, 0, 0 );

		// restore old values
		Ft2SetAttrs( mhPS, PRIM_AREA, ABB_COLOR | ABB_MIX_MODE | ABB_SYMBOL, 0, &oldAb );
	}
}

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

void Os2SalGraphics::invert( ULONG nPoints, const SalPoint* pPtAry, SalInvert nFlags )
{
	if( nFlags & SAL_INVERT_TRACKFRAME )
	{
		// save old vylues
		LINEBUNDLE oldLb;
		LINEBUNDLE lb;
		GpiQueryAttrs( mhPS, PRIM_LINE, LBB_MIX_MODE | LBB_TYPE | LBB_COLOR, &oldLb );

		// set linetype to short dash
		lb.lColor = RGBCOLOR( 255, 255, 255 );
		lb.usMixMode = FM_XOR;
		lb.usType = LINETYPE_ALTERNATE;
		Ft2SetAttrs( mhPS, PRIM_LINE, LBB_MIX_MODE | LBB_TYPE | LBB_COLOR, 0, &lb );

		// Draw Polyline
		drawPolyLine( nPoints, pPtAry );

		// restore old values
		Ft2SetAttrs( mhPS, PRIM_LINE, LBB_MIX_MODE | LBB_TYPE | LBB_COLOR, 0, &oldLb );
	}
	else
	{
		// save old values
		AREABUNDLE oldAb;
		AREABUNDLE ab;

		GpiQueryAttrs( mhPS, PRIM_AREA, ABB_COLOR | ABB_MIX_MODE | ABB_SYMBOL, &oldAb );

		// set fill color to black
		ab.lColor = RGBCOLOR( 255, 255, 255 );
		ab.usMixMode = FM_XOR;
		ab.usSymbol = (nFlags & SAL_INVERT_50) ? PATSYM_DENSE5 : PATSYM_SOLID;
		Ft2SetAttrs( mhPS, PRIM_AREA, ABB_COLOR | ABB_MIX_MODE | ABB_SYMBOL, 0, &ab );

		// Draw Polyline
		drawPolygon( nPoints, pPtAry );

		// restore old values
		Ft2SetAttrs( mhPS, PRIM_AREA, ABB_COLOR | ABB_MIX_MODE | ABB_SYMBOL, 0, &oldAb );
	}
}