CAlfCompositionClientBase Class Reference

class CAlfCompositionClientBase : public CActive

Base classes for logistics

Inherits from

Constructor & Destructor Documentation

CAlfCompositionClientBase(TInt)

CAlfCompositionClientBase(TIntaPriority = CActive::EPriorityHigh)[protected, inline]

Parameters

TInt aPriority = CActive::EPriorityHigh

~CAlfCompositionClientBase()

IMPORT_C~CAlfCompositionClientBase()[protected]

Member Functions Documentation

DoCancel()

voidDoCancel()[private, virtual]

Implements cancellation of an outstanding request.

This function is called as part of the active object's Cancel().

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

DoCancel() must not wait for event completion; this is handled by Cancel().

CActive::Cancel

Handle()

TInt Handle()const

HandleEventL(TInt, TAny *)

IMPORT_C voidHandleEventL(TIntaEventType,
TAny *aEventData
)[protected, virtual]

Parameters

TInt aEventType
TAny * aEventData

RequestEventL(TInt, RAlfBridgerClient *)

IMPORT_C voidRequestEventL(TIntaBufferSize,
RAlfBridgerClient *aClient = 0
)[protected]

Parameters

TInt aBufferSize
RAlfBridgerClient * aClient = 0

RunError(TInt)

IMPORT_C TIntRunError(TIntaError)[protected, virtual]

Parameters

TInt aError

RunL()

voidRunL()[private, virtual]

Handles an active object's request completion event.

A derived class must provide an implementation to handle the completed request. If appropriate, it may issue another request.

The function is called by the active scheduler when a request completion event occurs, i.e. after the active scheduler's WaitForAnyRequest() function completes.

Before calling this active object's RunL() function, the active scheduler has:

1. decided that this is the highest priority active object with a completed request

2. marked this active object's request as complete (i.e. the request is no longer outstanding)

RunL() runs under a trap harness in the active scheduler. If it leaves, then the active scheduler calls RunError() to handle the leave.

Note that once the active scheduler's Start() function has been called, all user code is run under one of the program's active object's RunL() or RunError() functions.

CActiveScheduler::Start CActiveScheduler::Error CActiveScheduler::WaitForAnyRequest TRAPD

SendEvent(TInt, const TAny *, TInt)

IMPORT_C TIntSendEvent(TIntaOp,
const TAny *aEventData,
TIntaEventSize
)[protected]

Parameters

TInt aOp
const TAny * aEventData
TInt aEventSize

SetHandleL(TInt)

IMPORT_C voidSetHandleL(TIntaHandle)[protected]

Parameters

TInt aHandle

Member Enumerations Documentation

Enum TAlfCompositionPermission

Enumerators

EAlfAllowChangeExtent = 1
EAlfAllowChangeAlpha = 2
EAlfAllowChangeOpacity = 4
EAlfAllowChangeRotation = 8
EAlfAllowChangeBackgroundAnim = 16

Member Data Documentation

CAlfCompositionClientBaseData * iData

CAlfCompositionClientBaseData *iData[private]