/*
* Copyright (c) 2008-2009 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: Layout blender
*
*/
#ifndef C_GLXBLENDLAYOUTBLEND_H
#define C_GLXBLENDLAYOUTBLEND_H
#include <glxlayout.h>
/**
* TGlxBlendLayout
*
* Blender of multiple MGlxLayouts based on coefficients
*
* @lib glxlayouts.lib
*/
//@TODO : Class wont be used - To be removed
class TGlxBlendLayout : public TGlxLayout
{
public:
/**
* Constructor, reset the values
*/
IMPORT_C TGlxBlendLayout();
/**
* Destructor
*/
IMPORT_C ~TGlxBlendLayout();
/**
* Add a layout to be blended
* @param aLayout the layout to add, cannot be NULL
*/
IMPORT_C void AddLayoutL( MGlxLayout* aLayout );
/**
* Remove an existing layout
* @param aLayout the layout to remove
*/
IMPORT_C void RemoveLayout( const MGlxLayout* aLayout );
/**
* Remove all existing layouts
*/
IMPORT_C void RemoveAllLayouts();
protected: // From TGlxLayout
/// @ref TGlxLayout::DoSetLayoutValues
void DoSetLayoutValues( TGlxLayoutInfo& aInfo );
/// @ref TGlxLayout::DoChanged
TBool DoChanged() const;
/// @ref TGlxLayout::DoClearChanged
void DoClearChanged();
private:
/**
* Helper struct to store the layout and layout info
*/
struct TLayout
{
/// Ref: the layout
MGlxLayout* iLayout;
/// Own: the layoutinfo for the layout
TGlxLayoutInfoResetter iLayoutInfo;
/**
* Helper to tell whether two TLayout structs match
*/
static TBool Match( const TLayout& aLhs, const TLayout& aRhs );
};
/// Own: array of cached layout infos
RArray< TLayout > iLayouts;
/**
* Changed flag to remember whether any layouts have been added or removed
* since the las call to DoClearChanged
*/
TBool iChanged;
};
#endif // C_GLXBLENDLAYOUTBLEND_H