Class TGifImageControl

class TGifImageControl : public TFrameDataBlock;

Description

GIF specific frame data variant which holds GIF image control information.

It can only be used with the GIF decoder (the encoder is not configurable).

Derivation

• TFrameDataBlock - The abstract base class for all format-specific frame data variants.

• TGifImageControl - GIF specific frame data variant which holds GIF image control information.

Members

Defined in TGifImageControl:

• DuplicateL(CFrameImageData &)constProvides a copy of an object that manages a list of frame and image block data, ...
• ELeaveInPlaceLeave the previous frame in place.
• ENoneNo method set.
• ERestoreToBackgroundRestore to the backgound colour.
• ERestoreToPreviousRestore the previous frame.
• TDisposalMethodFlag reflecting how the previous frame is handled when the next frame is drawn.
• TGifImageControl()Default constructor for this class.
• iDelayTimeInCentisecondsThe interval between display of successive frames in units of 1/100 second.
• iDisposalMethodThe frame disposal method for multiframe images.
• iTransparentColorIndexThe colour index to be used for transparency.
• iUserInputFlagA flag indicating if user input is required before display of next frame.

Inherited from TFrameDataBlock:

• DataType()constReturns the data type of the current TFrameDataBlock object.
• TFrameDataBlock(TUid)Constructs and initialises the TFrameDataBlock object to the data type specified...

IMPORT_C TGifImageControl();

Description

Default constructor for this class.

private: virtual TFrameDataBlock* DuplicateL(CFrameImageData &aFrameImageData) const;

Description

Provides a copy of an object that manages a list of frame and image block data, but not a bitwise copy. It provides a new reference to the object.

Parameters

CFrameImageData &aFrameImageData An object that manages a list of frame and image block data

Return value

TFrameDataBlock *

TDisposalMethod

Description

Flag reflecting how the previous frame is handled when the next frame is drawn.

ENone No method set. ELeaveInPlace Leave the previous frame in place. ERestoreToBackground Restore to the backgound colour. ERestoreToPrevious Restore the previous frame.

TInt iDelayTimeInCentiseconds;

Description

The interval between display of successive frames in units of 1/100 second.

TInt iTransparentColorIndex;

Description

The colour index to be used for transparency.

TBool iUserInputFlag;

Description

A flag indicating if user input is required before display of next frame.

TDisposalMethod iDisposalMethod;

Description

The frame disposal method for multiframe images.