--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdidrawbmp.cpp	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,218 @@
+// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#include "swdirectgdiengine.h"
+#include "swdirectgdibitmap.h"
+#include "swdirectgdidriverimpl.h"
+#include <bmalphablend.h>
+#include <graphics/bitmap.inl>
+#include <graphics/gdi/gdiinline.inl>
+
+/**
+@see MDirectGdiEngine::DrawBitmap(cosnt TRect&, const CFbsBitmap&, const TRect&)
+@panic DGDIAdapter 7, if the bitmap is invalid (debug only). 
+*/
+void CSwDirectGdiEngine::DrawBitmap(const TRect& aDestRect,
+									const CFbsBitmap& aSource,
+									const TRect& aSourceRect)
+	{
+	if (aSource.ExtendedBitmapType() != KNullUid)
+		{
+		iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps
+		return;
+		}
+	
+	TRect destRect(aDestRect);
+	destRect.Move(iOrigin);
+	TRect targetRect(destRect);		 
+	const CSwDirectGdiBitmap& srce = static_cast<const CSwDirectGdiBitmap&>(aSource);	
+
+	CBitwiseBitmap* bmp = srce.Address();
+	GRAPHICS_ASSERT_DEBUG(bmp,EDirectGdiPanicInvalidBitmap);
+
+	const TInt limit = iDefaultRegionPtr->Count();
+	const TBool opaqueSource = (!IsAlphaChannel(aSource.DisplayMode())) && (iDrawMode == DirectGdi::EDrawModePEN);
+	if (opaqueSource)
+		{
+		iDrawMode = DirectGdi::EDrawModeWriteAlpha;
+		}
+
+	TRect clipRect(0,0,0,0);
+	for (TInt count = 0; count < limit; count++)
+		{
+		clipRect = (*iDefaultRegionPtr)[count];
+		if (!clipRect.Intersects(targetRect))
+			{
+			continue;
+			}
+
+		clipRect.Intersection(targetRect);
+		DoDrawBitmap(destRect,bmp,aSource.DataAddress(),aSource.DataStride(),aSourceRect, clipRect);
+
+		iDrawDevice->UpdateRegion(clipRect);
+		}
+	if (opaqueSource)
+		{
+		iDrawMode = DirectGdi::EDrawModePEN;
+		}
+	}
+
+/*
+Draws the bitmap. If aSrceRect equals aDestRect, a DoBitBlt() is performed instead.
+@panic DGDIAdapter 1013, if the clipping rectangle is dully outside the destination bounds (debug only).
+*/
+void CSwDirectGdiEngine::DoDrawBitmap(const TRect& aDestRect,
+							 CBitwiseBitmap* aBitmap,
+							 TUint32* aBase,
+							 TInt aStride,
+							 const TRect& aSrceRect,
+							 const TRect& aClipRect)
+	{
+#ifdef _DEBUG
+	TRect deviceDestRect;
+	iDrawDevice->GetDrawRect(deviceDestRect);
+	GRAPHICS_ASSERT_DEBUG(aClipRect.iTl.iX >= deviceDestRect.iTl.iX, EDirectGdiPanicOutOfBounds);
+	GRAPHICS_ASSERT_DEBUG(aClipRect.iTl.iY >= deviceDestRect.iTl.iY, EDirectGdiPanicOutOfBounds);
+	GRAPHICS_ASSERT_DEBUG(aClipRect.iBr.iX <= deviceDestRect.iBr.iX, EDirectGdiPanicOutOfBounds);
+	GRAPHICS_ASSERT_DEBUG(aClipRect.iBr.iY <= deviceDestRect.iBr.iY, EDirectGdiPanicOutOfBounds);
+#endif
+
+	if (aDestRect.Size() == aSrceRect.Size())
+		{
+		TRect clippedRect(aDestRect);
+		clippedRect.Intersection(aClipRect);
+
+		const TPoint destPoint(clippedRect.iTl);
+		clippedRect.Move(aSrceRect.iTl - aDestRect.iTl);
+		DoBitBlt(destPoint,aBitmap,aBase,aStride,clippedRect);
+
+		return;
+		}
+
+	MFastBlend* fastBlend=NULL;
+	if (FastBlendInterface(aBitmap,NULL,fastBlend)==KErrNone)
+		{
+		if (fastBlend->FastBlendBitmapScaled(aClipRect, aDestRect, aSrceRect, aBase, aStride, aBitmap->DisplayMode(), aBitmap->SizeInPixels(), GcDrawMode(iDrawMode), CFbsDrawDevice::ENoShadow)== KErrNone)
+			{
+			return;
+			}
+		}
+	
+	TUint32* scanLineBuffer = iDrawDevice->ScanLineBuffer();
+	const TInt scanLineBytes = iDrawDevice->ScanLineBytes();
+	TPtr8 scanLineDes(reinterpret_cast<TUint8*>(scanLineBuffer), scanLineBytes, scanLineBytes);
+
+	// For EColor16MU targets, don't use EColor16MAP when draw mode is EDrawModeWriteAlpha.
+	// Format conversion provides no performance gain and WriteLine expects EColor16MU 
+	// in this case.
+	const TDisplayMode dispMode = iDrawDevice->DisplayMode() == EColor16MU && iDrawMode == DirectGdi::EDrawModeWriteAlpha ? EColor16MU : iDrawDevice->ScanLineDisplayMode();
+
+	TLinearDDA xLine;
+	TInt bitmapXStart = 0;
+	xLine.Construct(TPoint(aSrceRect.iTl.iX,aDestRect.iTl.iX),
+					TPoint(aSrceRect.iBr.iX,aDestRect.iBr.iX),TLinearDDA::ELeft);
+	xLine.JumpToYCoord(bitmapXStart,aClipRect.iTl.iX);
+
+	TLinearDDA yLine;
+	TPoint yCoord(aSrceRect.iTl.iY,aDestRect.iTl.iY);
+	yLine.Construct(yCoord,TPoint(aSrceRect.iBr.iY,aDestRect.iBr.iY),TLinearDDA::ELeft);
+	TInt dummy;
+	yLine.JumpToYCoord2(dummy,aClipRect.iTl.iY);
+	yCoord.SetXY(dummy,aClipRect.iTl.iY);
+
+	const TInt srceWidth = aSrceRect.Width();
+	const TInt destWidth = aDestRect.Width();
+	const TInt clipWidth = aClipRect.Width();
+	const TInt clipStrch = aClipRect.iTl.iX - aDestRect.iTl.iX;
+
+	TLineScanningPosition lineScanPos(aBase);
+	TBool finished = EFalse;
+	const TPoint KZeroPoint(0,0);
+	const CGraphicsContext::TDrawMode drawMode = GcDrawMode(iDrawMode);
+	while (yCoord.iY < aClipRect.iBr.iY && !finished)
+		{
+		aBitmap->StretchScanLine(scanLineDes,TPoint(bitmapXStart,yCoord.iX),
+								 clipStrch,clipWidth,destWidth,aSrceRect.iTl.iX,
+								 srceWidth,KZeroPoint,dispMode,aBase,lineScanPos);
+		if (yCoord.iY == aClipRect.iTl.iY)
+			{
+			aBitmap->SetCompressionBookmark(lineScanPos, aBase,NULL);
+			}
+		iDrawDevice->WriteLine(aClipRect.iTl.iX,yCoord.iY,clipWidth, scanLineBuffer, drawMode);
+		finished = yLine.NextStep(yCoord);
+		}
+	}
+
+/**
+@see MDirectGdiEngine::DrawMaskedBitmap(cosnt TRect&, const CFbsBitmap&, const TRect&, const CFbsBitmap&, TBool)
+@panic DGDIAdapter 7, if the source or mask bitmap is invalid (debug only).
+*/
+void CSwDirectGdiEngine::DrawBitmapMasked(const TRect& aDestRect,
+						 const CFbsBitmap& aBitmap,
+						 const TRect& aSourceRect,
+						 const CFbsBitmap& aMaskBitmap,
+						 TBool aInvertMask)
+	{
+	if ((aBitmap.ExtendedBitmapType() != KNullUid) || (aMaskBitmap.ExtendedBitmapType() != KNullUid))
+		{
+		iDriver->SetError(KErrNotSupported); // Not supported for extended bitmaps
+		return;
+		}
+
+	aBitmap.BeginDataAccess();
+	aMaskBitmap.BeginDataAccess();
+	
+	TRect destRect(aDestRect);
+	destRect.Move(iOrigin);
+	TRect targetRect(destRect);	
+	const TBool opaqueSource = (!IsAlphaChannel(aBitmap.DisplayMode())) && (iDrawMode == DirectGdi::EDrawModePEN);
+	
+	CBitwiseBitmap* srcebmp = ((CSwDirectGdiBitmap&)aBitmap).Address();
+	CBitwiseBitmap* maskbmp = ((CSwDirectGdiBitmap&)aMaskBitmap).Address();
+	GRAPHICS_ASSERT_DEBUG(srcebmp,EDirectGdiPanicInvalidBitmap);
+	GRAPHICS_ASSERT_DEBUG(maskbmp,EDirectGdiPanicInvalidBitmap);
+
+	const TInt limit = iDefaultRegionPtr->Count();
+	if (opaqueSource)
+		{
+		iDrawMode = DirectGdi::EDrawModeWriteAlpha;
+		}
+	TRect clipRect(0,0,0,0);
+	for (TInt count = 0; count < limit; count++)
+		{
+		clipRect = (*iDefaultRegionPtr)[count];
+		if (!clipRect.Intersects(targetRect))
+			{
+			continue;
+			}
+		clipRect.Intersection(targetRect);
+		DoDrawBitmapMasked(destRect,
+					   srcebmp,
+					   aBitmap.DataAddress(),
+					   aSourceRect,
+					   maskbmp,
+					   aMaskBitmap.DataAddress(),
+					   aInvertMask,
+					   clipRect);
+		iDrawDevice->UpdateRegion(clipRect);
+		}
+	if (opaqueSource)
+		{
+		iDrawMode = DirectGdi::EDrawModePEN;
+		}
+
+	aBitmap.EndDataAccess(ETrue);
+	aMaskBitmap.EndDataAccess(ETrue);
+	}