// BANDDEV.H
//
// Copyright (c) 1997-1999 Symbian Ltd.  All rights reserved.
//



#if !defined(__BANDDEV_H__)
#define __BANDEV_H__
#if !defined(__E32STD_H__)
#include <e32std.h>
#endif
#if !defined(__GDI_H__)
#include <gdi.h>
#endif

class CFbsBitmapDevice;
class CFbsBitGc;

enum TBandingDirection
	{
	EBandingTopToBottom,
	EBandingBottomToTop,
	EBandingLeftToRight,
	EBandingRightToLeft
	};

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