diff -r 000000000000 -r 05e9090e2422 skins/AknSkins/inc/AknsMaskedLayerBackgroundControlContext.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/skins/AknSkins/inc/AknsMaskedLayerBackgroundControlContext.h	Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,159 @@
+/*
+* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Layered background control context with mask bitmap.
+*
+*/
+
+
+#ifndef C_AKNSMASKEDLAYERBACKGROUNDCONTROLCONTEXT_H
+#define C_AKNSMASKEDLAYERBACKGROUNDCONTROLCONTEXT_H
+
+
+//  INCLUDES
+#include <AknsLayeredBackgroundControlContext.h>
+#include <AknsSkinInstance.h>
+#include <bitdev.h>
+#include <bitstd.h>
+
+/**
+*  Implementation of a control context that provides one or more layered
+*  backgrounds with their layout rectangles and has a mask bitmap that
+*  allows drawing of the layers as partially transparent.
+*
+*  The class is not intended for derivation outside the library.
+*
+*  @lib AknSkins.lib
+*
+*  @since S60 v5.0
+*/
+NONSHARABLE_CLASS( CAknsMaskedLayerBackgroundControlContext ) :
+    public CAknsLayeredBackgroundControlContext
+    {
+public:
+    /**
+    * Two-phased constructor.
+    *
+    * @param aImageID Item ID of the first background bitmap.
+    *
+    * @param aRect Rectangle where the first bitmap should be laid out.
+    *
+    * @param aParentAbsolute ETrue if parent absolute layout should be
+    *   used, EFalse otherwise. If a parent absolute layout is used,
+    *   the parent position must be set and updated using SetParentPos.
+    *
+    * @param aNumberOfLayers Total number of layers as an integer.
+    *   This must be 1 or more.
+    *
+    * @return Newly constructed object.
+    */
+    IMPORT_C static CAknsMaskedLayerBackgroundControlContext* NewL(
+        const TAknsItemID& aImageID, const TRect& aRect,
+        const TBool aParentAbsolute, const TInt aNumberOfLayers );
+
+    /**
+    * Destructor.
+    */
+    virtual ~CAknsMaskedLayerBackgroundControlContext();
+
+public: // New functions
+
+    /**
+    * Sets the item ID of the specified layer.
+    *
+    * @param aLayer Index of the layer, where 0 is the first one.
+    *   The index must be less than aNumberOfLayers given to @c NewL().
+    *
+    * @param aID Item ID of the image.
+    */
+    IMPORT_C void SetLayerImage( const TInt aLayer,
+        const TAknsItemID& aID );
+
+    /**
+    * Sets the layout rectangle of the specified layer.
+    *
+    * @param aLayer Index of the layer, where 0 is the first one.
+    *   The index must be less than aNumberOfLayers given to @c NewL().
+    *
+    * @param aRect Rectangle where the image should be laid out.
+    */
+    IMPORT_C void SetLayerRect( const TInt aLayer,
+        const TRect& aRect );
+
+    /**
+    * Sets layer mask IID and its size. No mask is set, if the zero layer
+    * (bottom) does not have image set up.
+    *
+    * @param aIID Item ID of the mask image. If setting KAknsIIDNone
+    *   deletes previously created member data.
+    *
+    * @param aRect Rectangle where the mask image should be laid out.
+    */
+    IMPORT_C void SetLayerMaskAndSizeL(const TAknsItemID& aIID, const TRect& aRect );
+
+public: // From MAknsControlContext
+
+    /**
+    * @copydoc MAknsControlContext::IsCompatibleWithType
+    */
+    TBool IsCompatibleWithType( const TAknsControlContextType aType ) const;
+
+protected:
+
+    /**
+    * C++ constructor.
+    */
+    CAknsMaskedLayerBackgroundControlContext();
+
+    /**
+    * Symbian 2nd phase constructor.
+    */
+    void ConstructL( const TRect& aRect, const TBool aParentAbsolute,
+        const TAknsItemID& aImageID, const TInt aNumberOfLayers );
+
+protected:  // Data
+
+    /*
+    * Layer mask image.
+    * Own.
+    *
+    */
+    CFbsBitmap* iLayerMask;
+
+    /*
+    * Offscreen bitmap in which are drawn all the layers
+    * (without mask).
+    * Own.
+    *
+    */
+    CFbsBitmap* iOffScreenBmp;
+
+    /*
+    * Offscreen graphics device.
+    * Own.
+    *
+    */
+    CFbsBitmapDevice* iOffScreenDevice;
+
+    /*
+    * Offscreen bitmap graphics context..
+    * Own.
+    *
+    */
+    CFbsBitGc* iOffScreenGc;
+
+    friend class AknsDrawUtils;
+    };
+
+
+#endif // C_AKNSLAYERFRAMEBACKGROUNDCONTROLCONTEXT_H