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CFbsColor256BitmapUtil Class Reference

class CFbsColor256BitmapUtil : public CBase

Copies a bitmap in any display mode of at least 256 colours into a 256 colour bitmap, optionally using a user-defined palette.

Inherits from

  • CFbsColor256BitmapUtil
Public Member Functions
~CFbsColor256BitmapUtil()
IMPORT_C TIntCopyBitmap(CFbsBitmap *, CFbsBitmap *, TDither)
IMPORT_C CFbsColor256BitmapUtil *NewL(const CPalette *)
Private Member Functions
CFbsColor256BitmapUtil()
Inherited Functions
CBase::CBase()
CBase::Delete(CBase *)
CBase::Extension_(TUint,TAny *&,TAny *)
CBase::operator new(TUint)
CBase::operator new(TUint,TAny *)
CBase::operator new(TUint,TLeave)
CBase::operator new(TUint,TLeave,TUint)
CBase::operator new(TUint,TUint)
CBase::~CBase()
Public Member Enumerations
enumTDither { ENoDither, EFloydSteinberg }
Private Attributes
TColor256Util *iColor256Util
CDitherColor256 *iDither

Constructor & Destructor Documentation

CFbsColor256BitmapUtil()

CFbsColor256BitmapUtil()[private, inline]

~CFbsColor256BitmapUtil()

~CFbsColor256BitmapUtil()

Member Functions Documentation

CopyBitmap(CFbsBitmap *, CFbsBitmap *, TDither)

IMPORT_C TIntCopyBitmap(CFbsBitmap *aColor256Destination,
CFbsBitmap *aSource,
TDitheraDither = ENoDither
)

Copies the contents of a source bitmap to a destination 256 colour bitmap. Both bitmaps must be the same size and the destination bitmap's display mode must be EColor256.

panic
EFbsColor256UtilError Either aColor256Destination's display mode is not EColor256, or the two bitmaps are not the same size.

Parameters

CFbsBitmap * aColor256DestinationThe destination to copy the bitmap to. Its display mode must be EColor256.
CFbsBitmap * aSourceThe source bitmap to copy from. Its display mode can be EColor16M, EColor64K, EColor4K or EColor256.
TDither aDither = ENoDitherSpecify EFloydSteinberg for Floyd-Steinberg dithering. By default, no dithering.

NewL(const CPalette *)

IMPORT_C CFbsColor256BitmapUtil *NewL(const CPalette *aPalette)[static]

Allocates and constructs a new 256 colour bitmap utility object, optionally specifying a palette.

Parameters

const CPalette * aPaletteThe palette of colours to use for the destination 256 colour bitmap. If there are more than 256 colours in the palette, only the first 256 are used. May be NULL, in which case the system default 256 colour palette is used.

Member Enumerations Documentation

Enum TDither

Indicates whether or not to use dithering.

Enumerators

ENoDither

No dithering.

EFloydSteinberg

Use the Floyd-Steinberg dithering algorithm.

Member Data Documentation

TColor256Util * iColor256Util

TColor256Util *iColor256Util[private]

CDitherColor256 * iDither

CDitherColor256 *iDither[private]

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