/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "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:

* Ixonos Plc

*

* Description:  

*

*/

#ifndef COLORSELECTIONGRID_H

#define COLORSELECTIONGRID_H

//  INCLUDES

#include <akngrid.h>

/*	CLASS: CColorSelectionGrid

*

*   CColorSelectionGrid represents a color selection grid control in

*	Nokia Still Image Editor.

*/

class CColorSelectionGrid : public CAknGrid

{

public:

/** @name Methods:*/

//@{

	/** Default constructor

	*

	*	@param aParent - parent control

	*	@param aFlags - grid flags

	*	@return -

	*/

	IMPORT_C CColorSelectionGrid ();

	/** Destructor

	*

	*	@param -

	*	@return -

	*/

	IMPORT_C virtual ~CColorSelectionGrid ();

    /** Second phase constructor

	*

	*	@param aParent - parent control

	*	@param aFlags - grid flags

	*	@return -

	*/

	IMPORT_C virtual void ConstructL (

        const CCoeControl *     aParent,  

        TInt                    aFlags 

        );

//@}

protected:

/** @name Methods:*/

//@{

	/*	SizeChanged

	*

	*   @see CImageEditorControlBase

	*/

	IMPORT_C virtual void SizeChanged();

//@}

/** @name Members:*/

//@{

//@}

private:

/** @name Methods:*/

//@{

	/*	SetupGridIconsL

	*

	*	Sets up grid icons.

	*

	*   @param -

	*   @return -

	*/

	void SetupGridIconsL ();

	/*	SetupGrid

	*

	*	Sets up grid every time the grid size changes.

	*

	*   @param -

	*   @return -

	*/

	void SetupGrid();

	/*	HSLtoRGB

	*

	*	HSL to RGB color conversion

	*

	*   @param aH - hue				[0.0 - 360.0]

	*   @param aS - saturation		[0.0 - 1.0]

	*   @param aL - luminance		[0.0 - 1.0]

	*   @return TRgb

	*/

	TRgb HSLtoRGB (

		const TReal aH, 

		const TReal aS, 

		const TReal aL

		) const;

	/*	ToRGB

	*

	*	Helper function in color conversion.

	*

	*   @param aRM1 - helper variable

	*   @param aRM2 - helper variable

	*   @param aRH - helper variable

	*   @return TInt

	*/

	TInt ToRGB (

		TReal aRM1, 

		TReal aRM2, 

		TReal aRH

		) const;

	/** Copy constructor, disabled

	*/

	CColorSelectionGrid (const CColorSelectionGrid & rhs);

	/** Assignment operator, disabled 

	*/

	CColorSelectionGrid & operator= (const CColorSelectionGrid & rhs);

//@}

private:

/** @name Members:*/

//@{

    TSize iGridSize;

    TSize iIconSize;

//@}

};

#endif // EOF ColorSelectionGrid.h