williamr@2: // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@4: // under the terms of "Eclipse Public License v1.0"
williamr@2: // which accompanies this distribution, and is available
williamr@4: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: //
williamr@2: 
williamr@2: #ifndef BANDDEV_H
williamr@2: #define BANDDEV_H
williamr@2: 
williamr@2: #include <e32std.h>
williamr@2: #include <gdi.h>
williamr@2: 
williamr@2: class CFbsBitmapDevice;
williamr@2: class CFbsBitGc;
williamr@2: 
williamr@2: /**
williamr@4:  @publishedAll
williamr@2: */
williamr@2: enum TBandingDirection
williamr@2: 	{
williamr@2: 	EBandingTopToBottom,
williamr@2: 	EBandingBottomToTop,
williamr@2: 	EBandingLeftToRight,
williamr@2: 	EBandingRightToLeft
williamr@2: 	};
williamr@2: 
williamr@2: /**
williamr@2:  @publishedAll
williamr@2:  @released 
williamr@2:  */
williamr@2: class CBandedDevice : public CGraphicsDevice
williamr@2: 	{
williamr@2: public:
williamr@2: 	IMPORT_C ~CBandedDevice();
williamr@2: 	IMPORT_C static CBandedDevice* NewL(TRect aRectInPixels, TSize aKPixelSizeInTwips, TDisplayMode aDisplayMode, TBandingDirection aBandingDirection = EBandingTopToBottom, TInt aScanLinesPerBand = 0);
williamr@2: 
williamr@2: 	IMPORT_C TInt HorizontalTwipsToPixels(TInt aTwips) const;
williamr@2: 	IMPORT_C TInt VerticalTwipsToPixels(TInt aTwips) const;
williamr@2: 	IMPORT_C TInt HorizontalPixelsToTwips(TInt aPixels) const;
williamr@2: 	IMPORT_C TInt VerticalPixelsToTwips(TInt aPixels) const;
williamr@2: 	IMPORT_C virtual TInt GetNearestFontInTwips(CFont*& aFont, const TFontSpec& aFontSpec);
williamr@2: 	IMPORT_C virtual TInt GetNearestFontToDesignHeightInTwips(CFont*& aFont, const TFontSpec& aFontSpec);
williamr@2: 	IMPORT_C virtual TInt GetNearestFontToMaxHeightInTwips(CFont*& aFont, const TFontSpec& aFontSpec, TInt aMaxHeight);
williamr@2: 	IMPORT_C void ReleaseFont(CFont* aFont);
williamr@2: 
williamr@2: 	IMPORT_C TDisplayMode DisplayMode() const;
williamr@2: 	IMPORT_C TSize SizeInPixels() const;
williamr@2: 	IMPORT_C TSize SizeInTwips() const;
williamr@2: 	IMPORT_C TInt CreateContext(CGraphicsContext*& aGC);
williamr@2: 	IMPORT_C TInt NumTypefaces() const;
williamr@2: 	IMPORT_C void TypefaceSupport(TTypefaceSupport& aTypefaceSupport, TInt aTypefaceIndex) const;
williamr@2: 	IMPORT_C TInt FontHeightInTwips(TInt aTypefaceIndex, TInt aHeightIndex) const;
williamr@2: 	IMPORT_C void PaletteAttributes(TBool& aModifiable, TInt& aNumEntries) const;
williamr@2: 	IMPORT_C void SetPalette(CPalette* aPalette);
williamr@2: 	IMPORT_C TInt GetPalette(CPalette*& aPalette) const;
williamr@2: 
williamr@2: 	IMPORT_C TInt NumBands() const;
williamr@2: 	IMPORT_C TInt NextBand();
williamr@2: 	IMPORT_C TRect BandRect() const;
williamr@2: 	IMPORT_C TPoint FullOriginToBandOrigin(const TPoint& aPoint) const;
williamr@2: 	IMPORT_C void Reset();
williamr@2: 
williamr@2: 	inline TBandingDirection BandingDirection() const {return iBandingDirection;}
williamr@2: 	inline CFbsBitmap* BandBitmap() const {return iBandBitmap;}
williamr@2: 
williamr@2: private:
williamr@2: 	CBandedDevice(TRect aRectInPixels, TBandingDirection aBandingDirection, TInt aScanLinesPerBand);
williamr@2: 	void ConstructL(TDisplayMode aDisplayMode, TSize aKPixelSizeInTwips);
williamr@2: 
williamr@2: private:
williamr@2: 	TRect iFullRectInPixels;
williamr@2: 	TInt iScanLinesPerBand;
williamr@2: 	TInt iBandIndex;
williamr@2: 	CFbsBitmap* iBandBitmap;
williamr@2: 	CFbsBitmapDevice* iBandBitmapDevice;
williamr@2: 	CFbsBitGc* iClearGc;
williamr@2: 	TBandingDirection iBandingDirection;
williamr@2: 	};
williamr@2: 
williamr@2: #endif