Class CWindowAnim

CWindowAnim

Support

Supported from 5.1

Description

Window animation interface. This interface is provided to create animations other than sprites. A window animation can be provided by deriving from this class.

The interface inherits from CAnim and has access to its functions. It additionally can access an interface for querying and manipulating the window in which the animation takes place, using its iWindowFunctions member.

The derived class is constructed in the DLL factory class CAnimDll::CreateInstanceL() function, as explained in its description.

Derivation

CAnim Server side animated object base interface CBase Base class for all classes to be instantiated on the heap CWindowAnim Window animation interface MEventHandler Event handler interface

Defined in CWindowAnim:
*iWindowFunctions, CWindowAnim(), ConstructL(), FocusChanged(), Redraw(), iGc

Inherited from CAnim:
Animate(), Command(), CommandReplyL(), iFunctions

Inherited from CBase:
operator new()

Inherited from MEventHandler:
OfferRawEvent()

See also:

• CFreeTimerWindowAnim
• CSpriteAnim

virtual void ConstructL(TAny* aArgs, TBool aHasFocus)=0;

Description

Server side construction and initialisation of an animation class.

Note:

• The aHasFocus argument allows the animation to start in a known focus state. For example, an animation may or may not have focus, depending on how it was started. Together with the FocusChanged() function this allows an animation to always know its focus state.

Parameters

TAny* aArgs Packaged arguments which may be required during construction. These are transferred from aParams argument of the client side constructor — RAnim::Construct(). TBool aHasFocus Specify whether or not the animation has window server focus.

protected: inline CWindowAnim() {}

Description

Protected constructor. Prevents objects of this class being directly constructed.

virtual void FocusChanged(TBool aState)=0;

Description

Notifies change of focus. The function is called by the window server to notify a change of focus — allowing the animation code to track whether it does or does not have focus, and to change its appearance accordingly.

Parameters

TBool aState Focus has or has not changed.

virtual void Redraw()=0;

Description

Redraws the objects. The function is called by the window server when it needs to redraw the object — the object must provide all the low level drawing code.

Description

Note that these values are automatically set for you by the animation framework — you do not need to assign a value to these pointers.

MAnimWindowFunctions *iWindowFunctions

Description

Pointer to a class containing functions implemented by the window server. These are available to any CWindowAnim derived class.

CAnimGc* iGc

Description

Pointer to the graphics context.