// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

// which accompanies this distribution, and is available

// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef BANDDEV_H

#define BANDDEV_H

#include <e32std.h>

#include <gdi.h>

class CFbsBitmapDevice;

class CFbsBitGc;

/**

@internalTechnology

*/

enum TBandingDirection

	{

	EBandingTopToBottom,

	EBandingBottomToTop,

	EBandingLeftToRight,

	EBandingRightToLeft

	};

/**

 @publishedAll

 @released 

 */

class CBandedDevice : public CGraphicsDevice

	{

public:

	IMPORT_C ~CBandedDevice();

	IMPORT_C static CBandedDevice* NewL(TRect aRectInPixels, TSize aKPixelSizeInTwips, TDisplayMode aDisplayMode, TBandingDirection aBandingDirection = EBandingTopToBottom, TInt aScanLinesPerBand = 0);

	IMPORT_C TInt HorizontalTwipsToPixels(TInt aTwips) const;

	IMPORT_C TInt VerticalTwipsToPixels(TInt aTwips) const;

	IMPORT_C TInt HorizontalPixelsToTwips(TInt aPixels) const;

	IMPORT_C TInt VerticalPixelsToTwips(TInt aPixels) const;

	IMPORT_C virtual TInt GetNearestFontInTwips(CFont*& aFont, const TFontSpec& aFontSpec);

	IMPORT_C virtual TInt GetNearestFontToDesignHeightInTwips(CFont*& aFont, const TFontSpec& aFontSpec);

	IMPORT_C virtual TInt GetNearestFontToMaxHeightInTwips(CFont*& aFont, const TFontSpec& aFontSpec, TInt aMaxHeight);

	IMPORT_C void ReleaseFont(CFont* aFont);

	IMPORT_C TDisplayMode DisplayMode() const;

	IMPORT_C TSize SizeInPixels() const;

	IMPORT_C TSize SizeInTwips() const;

	IMPORT_C TInt CreateContext(CGraphicsContext*& aGC);

	IMPORT_C TInt NumTypefaces() const;

	IMPORT_C void TypefaceSupport(TTypefaceSupport& aTypefaceSupport, TInt aTypefaceIndex) const;

	IMPORT_C TInt FontHeightInTwips(TInt aTypefaceIndex, TInt aHeightIndex) const;

	IMPORT_C void PaletteAttributes(TBool& aModifiable, TInt& aNumEntries) const;

	IMPORT_C void SetPalette(CPalette* aPalette);

	IMPORT_C TInt GetPalette(CPalette*& aPalette) const;

	IMPORT_C TInt NumBands() const;

	IMPORT_C TInt NextBand();

	IMPORT_C TRect BandRect() const;

	IMPORT_C TPoint FullOriginToBandOrigin(const TPoint& aPoint) const;

	IMPORT_C void Reset();

	inline TBandingDirection BandingDirection() const {return iBandingDirection;}

	inline CFbsBitmap* BandBitmap() const {return iBandBitmap;}

private:

	CBandedDevice(TRect aRectInPixels, TBandingDirection aBandingDirection, TInt aScanLinesPerBand);

	void ConstructL(TDisplayMode aDisplayMode, TSize aKPixelSizeInTwips);

private:

	TRect iFullRectInPixels;

	TInt iScanLinesPerBand;

	TInt iBandIndex;

	CFbsBitmap* iBandBitmap;

	CFbsBitmapDevice* iBandBitmapDevice;

	CFbsBitGc* iClearGc;

	TBandingDirection iBandingDirection;

	};

#endif