imagehandlinglib/Src/IHLBitmapUtil.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 26 Jan 2010 15:18:05 +0200
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/*
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* Copyright (c) 2004 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:  Static utility class for synchronous CFbsBitmap operations.
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*
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*/
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// INCLUDE FILES
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#include <IHLBitmapUtil.h>
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#include <fbs.h>
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// ============================ STATIC FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::DuplicateBitmapL
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// -----------------------------------------------------------------------------
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EXPORT_C CFbsBitmap* IHLBitmapUtil::DuplicateBitmapL( const CFbsBitmap& aBitmap )
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	{
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	CFbsBitmap* bitmap = DuplicateBitmapLC( aBitmap );
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	CleanupStack::Pop(); // bitmap
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	return bitmap;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::DuplicateBitmapLC
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// -----------------------------------------------------------------------------
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EXPORT_C CFbsBitmap* IHLBitmapUtil::DuplicateBitmapLC( const CFbsBitmap& aBitmap )
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	{
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	CFbsBitmap* bitmap = new(ELeave) CFbsBitmap;
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	CleanupStack::PushL( bitmap );
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	User::LeaveIfError( bitmap->Duplicate( aBitmap.Handle() ) );
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	return bitmap;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::CopyBitmapL
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// -----------------------------------------------------------------------------
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EXPORT_C CFbsBitmap* IHLBitmapUtil::CopyBitmapL( const CFbsBitmap& aBitmap )
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	{
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	CFbsBitmap* bitmap = CopyBitmapLC( aBitmap );
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	CleanupStack::Pop(); // bitmap
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	return bitmap;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::CopyBitmapLC
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// -----------------------------------------------------------------------------
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EXPORT_C CFbsBitmap* IHLBitmapUtil::CopyBitmapLC( const CFbsBitmap& aBitmap )
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	{
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    CFbsBitmap* bitmap = new (ELeave) CFbsBitmap();
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    CleanupStack::PushL( bitmap );
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	if( !aBitmap.Handle() )
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		{
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		return bitmap;
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		}
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	TSize size( aBitmap.SizeInPixels() );
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	TDisplayMode displayMode( aBitmap.DisplayMode() );
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    User::LeaveIfError( bitmap->Create( size, displayMode ) );
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    HBufC8* scanLine = HBufC8::NewLC(
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        aBitmap.ScanLineLength( size.iWidth, displayMode ) );
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    TPtr8 scanPtr( scanLine->Des() );
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    TPoint pp;
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    for ( TInt y( 0 ); y < size.iHeight; ++y )
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        {
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		pp.iY = y;
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        aBitmap.GetScanLine( scanPtr, pp, size.iWidth, displayMode );
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        bitmap->SetScanLine( scanPtr, y );
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        }
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    CleanupStack::PopAndDestroy(); // scanLine
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	return bitmap;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::CopyBitmapL
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// -----------------------------------------------------------------------------
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EXPORT_C CFbsBitmap* IHLBitmapUtil::CopyBitmapL( const CFbsBitmap& aBitmap, const TRect& aRect )
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	{
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	CFbsBitmap* bitmap = CopyBitmapLC( aBitmap, aRect );
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	CleanupStack::Pop(); // bitmap
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	return bitmap;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::CopyBitmapLC
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// -----------------------------------------------------------------------------
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EXPORT_C CFbsBitmap* IHLBitmapUtil::CopyBitmapLC( const CFbsBitmap& aBitmap, const TRect& aRect )
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	{
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    CFbsBitmap* bitmap = new (ELeave) CFbsBitmap();
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    CleanupStack::PushL( bitmap );
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	if( !aBitmap.Handle() )
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		{
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		return bitmap;
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		}
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	TSize clipSize( aRect.Size() );
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	TSize sourceSize( aBitmap.SizeInPixels() );
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	if( aRect.iTl.iX == aRect.iBr.iX ||
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		aRect.iTl.iY == aRect.iBr.iY ||
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	    aRect.iTl.iX < 0 ||
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	    aRect.iTl.iX > sourceSize.iWidth ||
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	    aRect.iTl.iY < 0 ||
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	    aRect.iTl.iY > sourceSize.iHeight )
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		{
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		User::Leave( KErrArgument );
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		}
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	TDisplayMode dispMode( aBitmap.DisplayMode() );
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    User::LeaveIfError( bitmap->Create( clipSize, dispMode ) );
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    HBufC8* scanLine = HBufC8::NewLC(
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        aBitmap.ScanLineLength( clipSize.iWidth, dispMode ) );
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    TPtr8 scanPtr( scanLine->Des() );
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    TPoint pp( aRect.iTl );
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    for ( TInt y( 0 ); y < clipSize.iHeight; ++y, ++pp.iY )
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        {
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        aBitmap.GetScanLine( scanPtr, pp, clipSize.iWidth, dispMode );
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        bitmap->SetScanLine( scanPtr, y );
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        }
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    CleanupStack::PopAndDestroy(); // scanLine
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	return bitmap;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::ScaleBitmap
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// -----------------------------------------------------------------------------
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EXPORT_C TInt IHLBitmapUtil::ScaleBitmap( const CFbsBitmap& /*aSrcBitmap*/,
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										  CFbsBitmap& /*aDstBitmap*/,
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										  TUint32 /*aOptions*/ )
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	{
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	return KErrNotSupported;
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	}
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// -----------------------------------------------------------------------------
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// IHLBitmapUtil::ScaleBitmap
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// -----------------------------------------------------------------------------
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EXPORT_C TInt IHLBitmapUtil::ScaleBitmap( const CFbsBitmap& /*aSrcBitmap*/,
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										  const TRect& /*aSrcRect*/,
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										  CFbsBitmap& /*aDstBitmap*/,
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										  const TRect& /*aDstRect*/,
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										  TUint32 /*aOptions*/ )
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	{
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	return KErrNotSupported;
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	}
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//  End of File