Symbian^3 Application Developer Library >

CMetafileDevice Class Reference

class CMetafileDevice : public CGraphicsDevice

Internal to Symbian

Inherits from

Public Member Functions
~CMetafileDevice ()
IMPORT_C TInt CreateContext ( CGraphicsContext *&)
IMPORT_C TDisplayMode DisplayMode ()
IMPORT_C void EndOfStreamL ()
IMPORT_C TInt FontHeightInTwips ( TInt , TInt )
IMPORT_C TInt GetNearestFontInTwips ( CFont *&, const TFontSpec &)
IMPORT_C TInt GetNearestFontToDesignHeightInTwips ( CFont *&, const TFontSpec &)
IMPORT_C TInt GetNearestFontToMaxHeightInTwips ( CFont *&, const TFontSpec &, TInt )
IMPORT_C TInt GetPalette ( CPalette *&)
IMPORT_C TInt HorizontalPixelsToTwips ( TInt )
IMPORT_C TInt HorizontalTwipsToPixels ( TInt )
IMPORT_C CMetafileDevice * NewL ( CGraphicsDevice *)
IMPORT_C TInt NumTypefaces ()
IMPORT_C void PaletteAttributes ( TBool &, TInt &)
IMPORT_C void ReleaseFont ( CFont *)
IMPORT_C void SetPalette ( CPalette *)
IMPORT_C TSize SizeInPixels ()
IMPORT_C TSize SizeInTwips ()
IMPORT_C void StartOutputStreamL ( RWriteStream &)
IMPORT_C void TypefaceSupport ( TTypefaceSupport &, TInt )
IMPORT_C void UseGcL ( TInt )
IMPORT_C TInt VerticalPixelsToTwips ( TInt )
IMPORT_C TInt VerticalTwipsToPixels ( TInt )
IMPORT_C RWriteStream & WriteStream ()
Protected Member Functions
CMetafileDevice ( CGraphicsDevice *)
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()
Private Attributes
TInt iGcCount
TInt iGcIndex
CGraphicsDevice * iRealDevice
RWriteStream * iWriteStream

Constructor & Destructor Documentation

CMetafileDevice(CGraphicsDevice *)

IMPORT_C CMetafileDevice ( CGraphicsDevice * aDevice ) [protected]

Parameters

CGraphicsDevice * aDevice

~CMetafileDevice()

IMPORT_C ~CMetafileDevice ( )

Member Functions Documentation

CreateContext(CGraphicsContext *&)

IMPORT_C TInt CreateContext ( CGraphicsContext *& aGC ) [virtual]

Creates a graphics context for the device.

Parameters

CGraphicsContext *& aGC On return, contains a pointer to the created graphics context.

DisplayMode()

IMPORT_C TDisplayMode DisplayMode ( ) const [virtual]

Gets the display mode of the device.

EndOfStreamL()

IMPORT_C void EndOfStreamL ( )

FontHeightInTwips(TInt, TInt)

IMPORT_C TInt FontHeightInTwips ( TInt aTypefaceIndex,
TInt aHeightIndex
) const [virtual]

Get the height of a font in twips.

The font is identified by typeface and height.

The value returned is rounded up or down to the nearest font height in twips.

Parameters

TInt aTypefaceIndex An index identifying the typeface, in the range: 0 to (NumTypefaces() - 1).
TInt aHeightIndex An index identifying the font height, in the range: 0 to (iNumHeights - 1). Note that iNumHeights is in the TTypefaceSupport object returned by TypefaceSupport().

GetNearestFontInTwips(CFont *&, const TFontSpec &)

IMPORT_C TInt GetNearestFontInTwips ( CFont *& aFont,
const TFontSpec & aFontSpec
)

Parameters

CFont *& aFont
const TFontSpec & aFontSpec

GetNearestFontToDesignHeightInTwips(CFont *&, const TFontSpec &)

IMPORT_C TInt GetNearestFontToDesignHeightInTwips ( CFont *& aFont,
const TFontSpec & aFontSpec
)

Parameters

CFont *& aFont
const TFontSpec & aFontSpec

GetNearestFontToMaxHeightInTwips(CFont *&, const TFontSpec &, TInt)

IMPORT_C TInt GetNearestFontToMaxHeightInTwips ( CFont *& aFont,
const TFontSpec & aFontSpec,
TInt aMaxHeight
)

Parameters

CFont *& aFont
const TFontSpec & aFontSpec
TInt aMaxHeight

GetPalette(CPalette *&)

IMPORT_C TInt GetPalette ( CPalette *& aPalette ) const [virtual]

Gets the device's current palette.

This function is only supported if the device has a modifiable palette, which can be determined by calling PaletteAttributes() .

Parameters

CPalette *& aPalette On return, holds the device's current palette.

HorizontalPixelsToTwips(TInt)

IMPORT_C TInt HorizontalPixelsToTwips ( TInt aPixels ) const

Parameters

TInt aPixels

HorizontalTwipsToPixels(TInt)

IMPORT_C TInt HorizontalTwipsToPixels ( TInt aTwips ) const

Parameters

TInt aTwips

NewL(CGraphicsDevice *)

IMPORT_C CMetafileDevice * NewL ( CGraphicsDevice * aDevice ) [static]

Parameters

CGraphicsDevice * aDevice

NumTypefaces()

IMPORT_C TInt NumTypefaces ( ) const [virtual]

Gets the number of typefaces supported by the graphics device.

PaletteAttributes(TBool &, TInt &)

IMPORT_C void PaletteAttributes ( TBool & aModifiable,
TInt & aNumEntries
) const [virtual]

Gets the palette attributes of the device.

Parameters

TBool & aModifiable On return, holds information on whether or not the device's palette is modifiable (ETrue) or fixed (EFalse).
TInt & aNumEntries On return, holds the number of entries in the device's palette.

ReleaseFont(CFont *)

IMPORT_C void ReleaseFont ( CFont * aFont )

Parameters

CFont * aFont

SetPalette(CPalette *)

IMPORT_C void SetPalette ( CPalette * aPalette ) [virtual]

Sets the device's palette.

Setting the palette is only possible if the device has a modifiable palette, which can be determined by calling PaletteAttributes() .

Parameters

CPalette * aPalette The new palette for the device.

SizeInPixels()

IMPORT_C TSize SizeInPixels ( ) const [virtual]

Gets the size of the device area in pixels.

SizeInTwips()

IMPORT_C TSize SizeInTwips ( ) const [virtual]

Gets the size of the device area in twips.

StartOutputStreamL(RWriteStream &)

IMPORT_C void StartOutputStreamL ( RWriteStream & aStream )

Parameters

RWriteStream & aStream

TypefaceSupport(TTypefaceSupport &, TInt)

IMPORT_C void TypefaceSupport ( TTypefaceSupport & aTypefaceSupport,
TInt aTypefaceIndex
) const [virtual]

Gets typeface information for a specified typeface.

This information is returned in aTypefaceSupport, and includes:

the typeface name and typeface attributes

the number of font heights

the maximum and minimum font heights

whether it is a scalable typeface

NumTypefaces()

Parameters

TTypefaceSupport & aTypefaceSupport On return, contains the typeface information.
TInt aTypefaceIndex A typeface index number, in the range: zero to (NumTypefaces() - 1).

UseGcL(TInt)

IMPORT_C void UseGcL ( TInt aGcIndex )

Parameters

TInt aGcIndex

VerticalPixelsToTwips(TInt)

IMPORT_C TInt VerticalPixelsToTwips ( TInt aPixels ) const

Parameters

TInt aPixels

VerticalTwipsToPixels(TInt)

IMPORT_C TInt VerticalTwipsToPixels ( TInt aTwips ) const

Parameters

TInt aTwips

WriteStream()

IMPORT_C RWriteStream & WriteStream ( )

Member Data Documentation

TInt iGcCount

TInt iGcCount [private]

TInt iGcIndex

TInt iGcIndex [private]

CGraphicsDevice * iRealDevice

CGraphicsDevice * iRealDevice [private]

RWriteStream * iWriteStream

RWriteStream * iWriteStream [private]

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All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.