MHuiVisualOwner Class Reference
Interface for visual owners. A class that owns a visual must implement this interface. Visual owners are expected to destroy their visuals when the owner is destroyed.
Constructor & Destructor Documentation
~MHuiVisualOwner()
| IMPORT_C | ~MHuiVisualOwner | ( | ) | [virtual] |
Member Functions Documentation
AppendL(CHuiVisual *)
Appends a visual to the visual owner.
Parameters
| CHuiVisual * aVisual | Visual to append. The owner receives ownership of the visual. |
ControlGroup()
| CHuiControlGroup * | ControlGroup | ( | ) | const [pure virtual] |
Determines the control group in which the owner belong to. If the owner does not belong to a control group, NULL is returned.
Env()
| CHuiEnv & | Env | ( | ) | const [pure virtual] |
Returns the environment where this visual belongs into.
EventHandler()
Returns the event handler resposible for handling events related to the visual, for example when the visual receives a pointer down event.
Remove(CHuiVisual *)
Removes a visual from the owner.
VisualDestroyed(CHuiVisual &)
| void | VisualDestroyed | ( | CHuiVisual & | aVisual | ) | [pure virtual] |
Removes a visual from the ownership of the owner. This is called when the visual is being destroyed.
VisualLayoutUpdated(CHuiVisual &)
| void | VisualLayoutUpdated | ( | CHuiVisual & | aVisual | ) | [pure virtual] |
Notifies the owner that the layout of a visual has been recalculated. Called only when the EHuiVisualFlagLayoutUpdateNotification flag has been set for the visual.
Parameters
| CHuiVisual & aVisual | Visual that has been laid out. |
VisualPrepareDrawFailed(CHuiVisual &, TInt)
| void | VisualPrepareDrawFailed | ( | CHuiVisual & | aVisual, |
| | TInt | aErrorCode |
| | ) | [pure virtual] |
Notifies the visual owner if there was an error (a leave happened) when preparing the visual for drawing. Typically the resource alloc errors such as out of memory is escalated through this callback.
Parameters
| CHuiVisual & aVisual | Visual that caused the error. |
| TInt aErrorCode | Symbian KErr error code for the failure. |
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