sl@0: // Copyright (c) 1997-2009 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 <bitdev.h>
sl@0: #include <bitstd.h>
sl@0: #include <banddev.h>
sl@0: 
sl@0: const TInt KBandSizeInBytes=0x8000; // 32k
sl@0: 
sl@0: EXPORT_C CBandedDevice::~CBandedDevice()
sl@0: 	{
sl@0: 	delete iClearGc;
sl@0: 	iClearGc=NULL;
sl@0: 	delete iBandBitmapDevice;
sl@0: 	iBandBitmapDevice=NULL;
sl@0: 	delete iBandBitmap;
sl@0: 	iBandBitmap=NULL;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CBandedDevice* CBandedDevice::NewL(TRect aRectInPixels,TSize aKPixelSizeInTwips,TDisplayMode aDisplayMode,TBandingDirection aBandingDirection,TInt aScanLinesPerBand)
sl@0: 	{
sl@0: 	CBandedDevice* device=new(ELeave) CBandedDevice(aRectInPixels,aBandingDirection,aScanLinesPerBand);
sl@0: 	CleanupStack::PushL(device);
sl@0: 	device->ConstructL(aDisplayMode,aKPixelSizeInTwips);
sl@0: 	CleanupStack::Pop();
sl@0: 	return device;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::HorizontalTwipsToPixels(TInt aTwips) const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->HorizontalTwipsToPixels(aTwips);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::VerticalTwipsToPixels(TInt aTwips) const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->VerticalTwipsToPixels(aTwips);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::HorizontalPixelsToTwips(TInt aPixels) const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->HorizontalPixelsToTwips(aPixels);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::VerticalPixelsToTwips(TInt aPixels) const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->VerticalPixelsToTwips(aPixels);
sl@0: 	}
sl@0: 
sl@0: /** Creates a font from those available in the printer device's 
sl@0: typeface store that most closely matches a font specification. 
sl@0: 
sl@0: When the font is no longer needed, call ReleaseFont().
sl@0: 
sl@0: This function is replaced by GetNearestFontToDesignHeightInTwips()
sl@0: 
sl@0: @param aFont On return, points to the font which most closely matches the 
sl@0: specified font.
sl@0: @param aFontSpec An absolute font specification. Its iHeight member is 
sl@0: interpreted as being in twips.
sl@0: @return KErrNone if successful; otherwise, another one of the system-wide error 
sl@0: codes.
sl@0: @deprecated */
sl@0: EXPORT_C TInt CBandedDevice::GetNearestFontInTwips(CFont*& aFont, const TFontSpec& aFontSpec)
sl@0: 	{
sl@0: 	return GetNearestFontToDesignHeightInTwips(aFont, aFontSpec);
sl@0: 	}
sl@0: 
sl@0: /** Creates a font from those available in the printer device's 
sl@0: typeface store that most closely matches a font specification. 
sl@0: 
sl@0: When the font is no longer needed, call ReleaseFont().
sl@0: 
sl@0: This function replaces GetNearestFontInTwips()
sl@0: 
sl@0: @param aFont On return, points to the font which most closely matches the 
sl@0: specified font.
sl@0: @param aFontSpec An absolute font specification. Its iHeight member is 
sl@0: interpreted as being in twips.
sl@0: @return KErrNone if successful; otherwise, another one of the system-wide error 
sl@0: codes. */
sl@0: EXPORT_C TInt CBandedDevice::GetNearestFontToDesignHeightInTwips(CFont*& aFont, const TFontSpec& aFontSpec)
sl@0: 	{
sl@0: 	return iBandBitmapDevice->GetNearestFontToDesignHeightInTwips(aFont, aFontSpec);
sl@0: 	}
sl@0: 
sl@0: /** This call is defined because it had to be - it appeared as an abstract virtual in
sl@0: the base class. But it should never actually get called for this class. */
sl@0: EXPORT_C TInt CBandedDevice::GetNearestFontToMaxHeightInTwips(CFont*& /*aFont*/, const TFontSpec& /*aFontSpec*/, TInt /*aMaxHeight*/)
sl@0: 	{
sl@0: 	return KErrNotSupported;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CBandedDevice::ReleaseFont(CFont* aFont)
sl@0: 	{
sl@0: 	iBandBitmapDevice->ReleaseFont(aFont);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TDisplayMode CBandedDevice::DisplayMode() const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->DisplayMode();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TSize CBandedDevice::SizeInPixels() const
sl@0: 	{
sl@0: 	return iFullRectInPixels.Size();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TSize CBandedDevice::SizeInTwips() const
sl@0: 	{
sl@0: 	TSize size=SizeInPixels();
sl@0: 	size.iWidth=HorizontalPixelsToTwips(size.iWidth);
sl@0: 	size.iHeight=VerticalPixelsToTwips(size.iHeight);
sl@0: 	return size;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::CreateContext(CGraphicsContext*& aGC)
sl@0: 	{
sl@0: 	TInt ret=iBandBitmapDevice->CreateContext(aGC);
sl@0: 	if (ret==KErrNone)
sl@0: 		{
sl@0: 		TPoint origin=FullOriginToBandOrigin(TPoint(0,0));
sl@0: 		aGC->SetOrigin(origin);
sl@0: 		}
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::NumTypefaces() const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->NumTypefaces();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CBandedDevice::TypefaceSupport(TTypefaceSupport& aTypefaceSupport,TInt aTypefaceIndex) const
sl@0: 	{
sl@0: 	iBandBitmapDevice->TypefaceSupport(aTypefaceSupport,aTypefaceIndex);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::FontHeightInTwips(TInt aTypefaceIndex,TInt aHeightIndex) const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->FontHeightInTwips(aTypefaceIndex,aHeightIndex);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CBandedDevice::PaletteAttributes(TBool& aModifiable,TInt& aNumEntries) const
sl@0: 	{
sl@0: 	iBandBitmapDevice->PaletteAttributes(aModifiable,aNumEntries);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CBandedDevice::SetPalette(CPalette* aPalette)
sl@0: 	{
sl@0: 	iBandBitmapDevice->SetPalette(aPalette);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::GetPalette(CPalette*& aPalette) const
sl@0: 	{
sl@0: 	return iBandBitmapDevice->GetPalette(aPalette);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::NumBands() const
sl@0: 	{
sl@0: 	TInt numbands;
sl@0: 	if ((iBandingDirection==EBandingTopToBottom) || (iBandingDirection==EBandingBottomToTop))
sl@0: 		numbands = (iFullRectInPixels.Size().iHeight/iScanLinesPerBand)+1;
sl@0: 	else
sl@0: 		numbands = (iFullRectInPixels.Size().iWidth/iScanLinesPerBand)+1;
sl@0: 	return numbands;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TInt CBandedDevice::NextBand()
sl@0: 	{
sl@0: 	iBandIndex++;
sl@0: 	if (iBandIndex==NumBands())
sl@0: 		iBandIndex=0;
sl@0: 	iClearGc->Clear();
sl@0: 	return iBandIndex;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TRect CBandedDevice::BandRect() const
sl@0: 	{
sl@0: 	TRect bandrect;
sl@0: 	if (iBandingDirection==EBandingTopToBottom)
sl@0: 		{
sl@0: 		bandrect.iTl.iX=iFullRectInPixels.iTl.iX;
sl@0: 		bandrect.iTl.iY=iFullRectInPixels.iTl.iY+(iBandIndex*iScanLinesPerBand);
sl@0: 		bandrect.iBr.iX=iFullRectInPixels.iBr.iX;
sl@0: 		bandrect.iBr.iY=bandrect.iTl.iY+iScanLinesPerBand;
sl@0: 		if (bandrect.iBr.iY>iFullRectInPixels.iBr.iY)
sl@0: 			bandrect.iBr.iY=iFullRectInPixels.iBr.iY;
sl@0: 		}
sl@0: 	else if (iBandingDirection==EBandingBottomToTop)
sl@0: 		{
sl@0: 		bandrect.iBr.iX=iFullRectInPixels.iBr.iX;
sl@0: 		bandrect.iBr.iY=iFullRectInPixels.iBr.iY-(iBandIndex*iScanLinesPerBand);
sl@0: 		bandrect.iTl.iX=iFullRectInPixels.iTl.iX;
sl@0: 		bandrect.iTl.iY=bandrect.iBr.iY-iScanLinesPerBand;
sl@0: 		if (bandrect.iTl.iY<iFullRectInPixels.iTl.iY)
sl@0: 			bandrect.iTl.iY=iFullRectInPixels.iTl.iY;
sl@0: 		}
sl@0: 	else if (iBandingDirection==EBandingLeftToRight)
sl@0: 		{
sl@0: 		bandrect.iTl.iX=iFullRectInPixels.iTl.iX+(iBandIndex*iScanLinesPerBand);
sl@0: 		bandrect.iTl.iY=iFullRectInPixels.iTl.iY;
sl@0: 		bandrect.iBr.iX=bandrect.iTl.iX+iScanLinesPerBand;
sl@0: 		bandrect.iBr.iY=iFullRectInPixels.iBr.iY;
sl@0: 		if (bandrect.iBr.iX>iFullRectInPixels.iBr.iX)
sl@0: 			bandrect.iBr.iX=iFullRectInPixels.iBr.iX;
sl@0: 		}
sl@0: 	else if (iBandingDirection==EBandingRightToLeft)
sl@0: 		{
sl@0: 		bandrect.iBr.iX=iFullRectInPixels.iBr.iX-(iBandIndex*iScanLinesPerBand);
sl@0: 		bandrect.iBr.iY=iFullRectInPixels.iBr.iY;
sl@0: 		bandrect.iTl.iX=bandrect.iBr.iX-iScanLinesPerBand;
sl@0: 		bandrect.iTl.iY=iFullRectInPixels.iTl.iY;
sl@0: 		if (bandrect.iTl.iX<iFullRectInPixels.iTl.iX)
sl@0: 			bandrect.iTl.iX=iFullRectInPixels.iTl.iX;
sl@0: 		}
sl@0: 	return bandrect;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C TPoint CBandedDevice::FullOriginToBandOrigin(const TPoint& aPoint) const
sl@0: 	{
sl@0: 	TRect rect=BandRect();
sl@0: 	return aPoint-rect.iTl;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void CBandedDevice::Reset()
sl@0: 	{
sl@0: 	iBandIndex=-1;
sl@0: 	}
sl@0: 
sl@0: CBandedDevice::CBandedDevice(TRect aRectInPixels,TBandingDirection aBandingDirection,TInt aScanLinesPerBand):
sl@0: 	iFullRectInPixels(aRectInPixels),
sl@0: 	iScanLinesPerBand(aScanLinesPerBand),
sl@0: 	iBandIndex(-1),
sl@0: 	iBandBitmap(NULL),
sl@0: 	iBandBitmapDevice(NULL),
sl@0: 	iBandingDirection(aBandingDirection)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: void CBandedDevice::ConstructL(TDisplayMode aDisplayMode,TSize aKPixelSizeInTwips)
sl@0: 	{
sl@0: 	iBandBitmap=new(ELeave)	CFbsBitmap;
sl@0: 	if ((iBandingDirection==EBandingTopToBottom) || (iBandingDirection==EBandingBottomToTop))
sl@0: 		{
sl@0: 		TInt widthinpixels=iFullRectInPixels.Size().iWidth;
sl@0: 		if (!iScanLinesPerBand)
sl@0: 			iScanLinesPerBand=KBandSizeInBytes/(CFbsBitmap::ScanLineLength(widthinpixels,aDisplayMode));
sl@0: 		iScanLinesPerBand&=~1;
sl@0: 		User::LeaveIfError(iBandBitmap->Create(TSize(widthinpixels,iScanLinesPerBand),aDisplayMode));
sl@0: 		TSize sizeintwips;
sl@0: 		sizeintwips.iWidth=(aKPixelSizeInTwips.iWidth*widthinpixels)/1000;
sl@0: 		sizeintwips.iHeight=(aKPixelSizeInTwips.iHeight*iScanLinesPerBand)/1000;
sl@0: 		iBandBitmap->SetSizeInTwips(sizeintwips);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		TInt heightinpixels=iFullRectInPixels.Size().iHeight;
sl@0: 		if (!iScanLinesPerBand)
sl@0: 			iScanLinesPerBand=KBandSizeInBytes/(CFbsBitmap::ScanLineLength(heightinpixels,aDisplayMode));
sl@0: 		iScanLinesPerBand&=~1;
sl@0: 		User::LeaveIfError(iBandBitmap->Create(TSize(iScanLinesPerBand,heightinpixels),aDisplayMode));
sl@0: 		TSize sizeintwips;
sl@0: 		sizeintwips.iWidth=(aKPixelSizeInTwips.iWidth*iScanLinesPerBand)/1000;
sl@0: 		sizeintwips.iHeight=(aKPixelSizeInTwips.iHeight*heightinpixels)/1000;
sl@0: 		iBandBitmap->SetSizeInTwips(sizeintwips);
sl@0: 		}
sl@0: 	iBandBitmapDevice=CFbsBitmapDevice::NewL(iBandBitmap);
sl@0: 	User::LeaveIfError(iBandBitmapDevice->CreateContext((CGraphicsContext*&) iClearGc));
sl@0: 	}
sl@0: