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