graphicsdeviceinterface/directgdiadaptation/cmnsrc/directgdiimageref.cpp
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     1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include "directgdiimageref.h"
       
    17 #include <graphics/sgresourceinternal.h>
       
    18 
       
    19 CDirectGdiImageRef::CDirectGdiImageRef()
       
    20 	{
       
    21 	}
       
    22 
       
    23 /**
       
    24 Second phase construction. If the object has not been opened before,
       
    25 the passed RSgImage handle is shared with the member RSgImage and the size of the 
       
    26 shared RSgImage is stored.
       
    27 
       
    28 @return KErrNone if successful, otherwise an error from RSgDrawable::Open() or 
       
    29 RSgImage::GetInfo()
       
    30  */
       
    31 TInt CDirectGdiImageRef::Construct(const RSgImage& aSgImage)
       
    32 	{		
       
    33 	TInt err = KErrNone;	
       
    34 	
       
    35 	// Share the passed RSgImage handle with our own RSgImage
       
    36 	err = iSgImage.Open(aSgImage.Id(), ESgDoNotRestrictUsage);
       
    37 	
       
    38 	if (err == KErrNone)
       
    39 		{
       
    40 		// Save our image size, only need to do this the first time we are created
       
    41 		TSgImageInfo info;
       
    42 		err = iSgImage.GetInfo(info);
       
    43 		if (err == KErrNone)
       
    44 			{
       
    45 			iImageSize = info.iSizeInPixels;
       
    46 			iImagePixelFormat = info.iPixelFormat;
       
    47 			iSgImageOpen = ETrue;
       
    48 			}
       
    49 		else
       
    50 			{
       
    51 			iSgImage.Close();
       
    52 			}
       
    53 		}
       
    54 	
       
    55 	return err;
       
    56 	}
       
    57 
       
    58 /**
       
    59 Destructor, close the RSgImage being held open if it had been opened it successfully.
       
    60  */
       
    61 CDirectGdiImageRef::~CDirectGdiImageRef()
       
    62 	{
       
    63 	if (iSgImageOpen)
       
    64 		{
       
    65 		iSgImage.Close();
       
    66 		}
       
    67 	}