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CWsScreenDevice::CScrDevExtension Class Reference

class CWsScreenDevice::CScrDevExtension : public CBase

Inherits from

CWsScreenDevice::CScrDevExtension
- CBase

Public Member Functions
	CScrDevExtension(RWsBuffer *, TInt32)
	~CScrDevExtension()
TInt	ComposeScreen(const CFbsBitmap &)
TBool	DisplayChangeEventsEnabled()
void	EnableDisplayChangeEvents(TBool)
TInt	GetCompositedSize(TSize &)
void	GetConfiguration(TDisplayConfiguration &)
void	GetDisplayExtentOfWindow(const RWindowBase &, TRect &)
void *	GetInterface(TUint)
void	GetMaximumSurfaceSize(TSize &, TSize &)
void	GetMaximumWindowExtent(TRect &)
TInt	GetResolutions(RArray< TResolution > &)
TInt	MapCoordinates(TCoordinateSpace, const TRect &, TCoordinateSpace, TRect &)
TInt	NumberOfResolutions()
TInt	PreferredDisplayVersion()
TInt	RepeatableConstruct()
TInt	SetConfiguration(const TDisplayConfiguration &)
void	SetTypefaceStore(CFbsTypefaceStore *)
TInt	TranslateExtent(const TRect &, TRect &)
CFbsTypefaceStore *	TypefaceStore()

Protected Member Functions
MWsClientClass *	WriteClient()

Private Member Functions
TInt	FillResolutionArray(TInt, RArray< TResolution > &)

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()

Protected Attributes
TInt	iSupportedExtensionsBits
CFbsTypefaceStore *	iTypefaceStore

Constructor & Destructor Documentation

CScrDevExtension(RWsBuffer *, TInt32)

CScrDevExtension	(	RWsBuffer *	aBuffer,
		TInt32	aWsHandle
	)

Parameters

RWsBuffer * aBuffer
TInt32 aWsHandle

~CScrDevExtension()

~CScrDevExtension

(

)

Member Functions Documentation

ComposeScreen(const CFbsBitmap &)

TInt

ComposeScreen

(

const CFbsBitmap &

aBitmap

)

const [virtual]

Parameters

const CFbsBitmap & aBitmap

DisplayChangeEventsEnabled()

TBool

DisplayChangeEventsEnabled

(

)

const [virtual]

EnableDisplayChangeEvents(TBool)

void

EnableDisplayChangeEvents

(

TBool

aEnable

)

[virtual]

Parameters

TBool aEnable

FillResolutionArray(TInt, RArray< TResolution > &)

TInt	FillResolutionArray	(	TInt	aNumOfRes,
			RArray< TResolution > &	aResolutions
		)	const [private]

Parameters

TInt aNumOfRes
RArray< TResolution > & aResolutions

GetCompositedSize(TSize &)

TInt

GetCompositedSize

(

TSize &

aSize

)

const [virtual]

Parameters

TSize & aSize

GetConfiguration(TDisplayConfiguration &)

void

GetConfiguration

(

TDisplayConfiguration &

aConfig

)

const [virtual]

Parameters

TDisplayConfiguration & aConfig

GetDisplayExtentOfWindow(const RWindowBase &, TRect &)

void	GetDisplayExtentOfWindow	(	const RWindowBase &	aWindow,
			TRect &	aExtent
		)	const [virtual]

Parameters

const RWindowBase & aWindow
TRect & aExtent

GetInterface(TUint)

void *

GetInterface

(

TUint

aId

)

Interface Extension capability Use of this interface going forward will allow the published client interface to be dynamically extended. Note that the pointer returned is only good for the lifetime of the called CBase derived object.

Pre-condition: caller has already checked that the implementation is initialised using RepeatableConstruct

Parameters

TUint aId

uniqueid or well known id of interface

GetMaximumSurfaceSize(TSize &, TSize &)

void	GetMaximumSurfaceSize	(	TSize &	aPixels,
			TSize &	aTwips
		)	const [virtual]

Parameters

TSize & aPixels
TSize & aTwips

GetMaximumWindowExtent(TRect &)

void

GetMaximumWindowExtent

(

TRect &

aExtent

)

const [virtual]

Parameters

TRect & aExtent

GetResolutions(RArray< TResolution > &)

TInt

GetResolutions

(

RArray< TResolution > &

aResolutions

)

const [virtual]

Parameters

RArray< TResolution > & aResolutions

MapCoordinates(TCoordinateSpace, const TRect &, TCoordinateSpace, TRect &)

TInt	MapCoordinates	(	TCoordinateSpace	aSourceSpace,
			const TRect &	aSource,
			TCoordinateSpace	aTargetSpace,
			TRect &	aTarget
		)	const [virtual]

Parameters

TCoordinateSpace aSourceSpace
const TRect & aSource
TCoordinateSpace aTargetSpace
TRect & aTarget

NumberOfResolutions()

TInt

NumberOfResolutions

(

)

const [virtual]

PreferredDisplayVersion()

TInt

PreferredDisplayVersion

(

)

const [virtual]

RepeatableConstruct()

TInt

RepeatableConstruct

(

)

Constructs the extension interface implementation, or returns error if interface is not available. After success, the interface is then always available and is not re-constructed if method called again, but after failure the construct attempt will be repeated (and fail again) if the method is called again. Clients would be expected to make then keep a pointer to this interface, not get new ones repeatedly. Note that if the extension was not allocated, then "this" could be NULL