printingservices/printerdrivers/canon/CANON.CPP
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:47:50 +0200
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permissions -rw-r--r--
Revision: 201003 Kit: 201005
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include "CANONSTD.H"
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#include <banddev.h>
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#include <fbs.h>
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#include "CANON.H"
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#include "pdrtext.h"
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EXPORT_C CPrinterDevice* NewPrinterDeviceL()
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	{
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	CCanonDevice* device = new(ELeave) CCanonDevice;
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	return device;
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	}
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CCanonDevice::CCanonDevice():
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	CFbsDrvDevice()
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	{
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	__DECLARE_NAME(_S("CCanonDevice"));
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	}
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CCanonDevice::~CCanonDevice()
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	{
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	}
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TInt CCanonDevice::CreateContext(CGraphicsContext*& aGC)
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	{
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	__ASSERT_DEBUG(iControl, Panic(ECanonControlDoesNotExist));
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	CPdrControl* control = (CPdrControl*)iControl;
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	return control->CreateContext(aGC);
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	}
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void CCanonDevice::CreateControlL(CPrinterPort* aPrinterPort)
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	{
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	__ASSERT_ALWAYS(aPrinterPort, Panic(ECanonRequiresPrinterPort));
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	__ASSERT_ALWAYS(!iControl, Panic(ECanonControlAlreadyExists));
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	__ASSERT_DEBUG(iCurrentPageSpecInTwips.iPortraitPageSize.iWidth && iCurrentPageSpecInTwips.iPortraitPageSize.iHeight, Panic(ECanonPageSpecNotSet));
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	iControl = CCanonControl::NewL(this, aPrinterPort, *iStore, iModelInfo->iResourcesStreamId);
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	}
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CCanonControl* CCanonControl::NewL(CPdrDevice* aPdrDevice, CPrinterPort* aPrinterPort, CStreamStore& aStore, TStreamId aResourcesStreamId)
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	{
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	CCanonControl* control = new(ELeave) CCanonControl(aPdrDevice, aPrinterPort);
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	CleanupStack::PushL(control);
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	control->ConstructL(aStore, aResourcesStreamId);
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	CleanupStack::Pop();
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	return control;
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	}
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CCanonControl::~CCanonControl()
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	{
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	}
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void CCanonControl::ConstructL(CStreamStore& aStore, TStreamId aResourcesStreamId)
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	{
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	if((iPdrDevice->CurrentPageSpecInTwips().iOrientation == TPageSpec::ELandscape)
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		&& (iPdrDevice->Flags() & ECanonLandscapeNotAvailable))
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		User::Leave(KErrNotSupported);
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	CFbsDrvControl::ConstructL(aStore, aResourcesStreamId);
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	TRect rect = iPdrDevice->PrintablePageInPixels();
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	TSize size;
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	size.iWidth = iPdrDevice->HorizontalPixelsToTwips(1000);
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	size.iHeight = iPdrDevice->VerticalPixelsToTwips(1000);
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	iBandedDevice = CBandedDevice::NewL(rect, size, iPdrDevice->DisplayMode(), EBandingTopToBottom, KCanonNumScanLinesPerBand);
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	TInt len = CFbsBitmap::ScanLineLength(iBandedDevice->BandBitmap()->SizeInPixels().iWidth, iPdrDevice->DisplayMode());
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	CFbsDrvControl::iScanLine = HBufC8::NewL(len);
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	CFbsDrvControl::iCompressedScanLine = HBufC8::NewL(len);
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	iPageText = CPageText::NewL();
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	}
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void CCanonControl::OutputBandL() 	
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	{
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	if(IsGraphicsBand())
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		{
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		TRect bandrect = iBandedDevice->BandRect();
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		TSize size = bandrect.Size();
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		TCommandString des;
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		TBool datainband = EFalse;
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		for(TInt i = 0; i < size.iWidth; i++)
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			{
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			iBandedDevice->BandBitmap()->GetVerticalScanLine(iScanLine, i, iPdrDevice->DisplayMode());
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			if(TransformBuffer() && !datainband)
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				{
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				MoveToL(bandrect.iTl + TPoint(i, 0));
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				des.Format(iResources->ResourceString(EPdrBitmapStart), KCanonBytesPerDotColumn * (size.iWidth - i));
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				iPageBuffer->AddBytesL(des);
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				datainband = ETrue;
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				}
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			if(datainband)
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				iPageBuffer->AddBytesL(iScanLine);
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			}
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		iPageBuffer->AddBytesL(iResources->ResourceString(EPdrBitmapEnd));
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		iPosition.iX = iPdrDevice->OffsetInPixels().iX;
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		TInt numentries = iPageText->NumEntries();
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		if(numentries)
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			{
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			CPageTextEntry* entry;
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			for(TInt y = bandrect.iTl.iY; y <= bandrect.iBr.iY; y++)
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				{
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				for(TInt index = 0; (index < numentries); index++)
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					{
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					entry = (*iPageText)[index];
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					TPoint drawPos = entry->iDrawPos - TPoint(0, 16);	// bodge to align pdr fonts with true types
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					if(drawPos.iY == y)
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						OutputTextL(drawPos, entry->iTextWidthInPixels, *(entry->iTextFormat), *(entry->iText));
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					}
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				}
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			}
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		}
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	}
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void CCanonControl::MoveToL(const TPoint& aPoint) 
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	{
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	TPoint vector = aPoint - iPosition;
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	TInt maxNoOfYIncrements = 256 * 5 / 6; // Ensures no more than 256
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	for(; vector.iY >= maxNoOfYIncrements; )
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		{
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		MoveByL(TPoint(0, maxNoOfYIncrements));
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		vector = aPoint - iPosition;
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		}
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	MoveByL(vector);		
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	iPosition = aPoint;
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	}
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void CCanonControl::MoveByL(const TPoint& aPoint)
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	{
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	TPoint vector = aPoint;
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	if(vector.iX < 0)
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		{
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		CommandL(EPdrCarriageReturn);
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		vector.iX += iPosition.iX - iPdrDevice->OffsetInPixels().iX;
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		}
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	vector.iX = vector.iX * 2 / 3; // X increments are in 120ths of an inch
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	vector.iY = vector.iY * 6 / 5; // Y increments are in 216ths of an inch
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	TPoint oldPosition = iPosition;
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	CFbsDrvControl::MoveByL(vector);
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	iPosition = oldPosition + aPoint; // Correct the position
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	}
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TBool CCanonControl::TransformBuffer()
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	{
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	TUint8* pStart = (TUint8*)iScanLine.Ptr();
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	TUint8* pEnd = pStart + (KCanonNumScanLinesPerBand >> 3);
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	TUint8* p;
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	for(p = pStart; (p < pEnd) && (*p == 0xFF); p++)
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		{
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		}
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	TBool datainscanline = (p < pEnd);
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	for(p = pStart; p < pEnd; p++)
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		{
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		TInt byte1 = *p;
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		TInt byte2 = 0;
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		for(TInt j = 0; j < 8; j++)
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			{
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			byte2 = byte2 << 1;
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			byte2 = byte2 | (byte1 & 1);
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			byte1 = byte1 >> 1;
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			}
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		*p = (TUint8)~byte2;
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		}
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	return datainscanline;	// returns ETrue if there are non-blank bytes in scanline
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  }
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   179
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CCanonControl::CCanonControl(CPdrDevice* aPdrDevice, CPrinterPort* aPrinterPort):
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	CFbsDrvControl(aPdrDevice, aPrinterPort)
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	{
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	__DECLARE_NAME(_S("CCanonControl"));
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	}
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   185