Class: TFontWidthStyle

Declaration: FontStyles.h

Taxonomy Categories:

Member Functions:

Interface Category:

API.

Inherits From:

TFontScaleStyle

Inherited By:

None.

Purpose:

TFontWidthStyle derives from TFontScaleStyle and specifies the width or the compression and expansion (condensation) ratio of the font. The width value is normalized to range [-1, 1], which corresponds to the range [minValue, maxValue]. Font names often indicate the width of the font by including strings such as condensed or narrow in them.

Instantiation:

Allocate on the heap or the stack.

Deriving Classes:

Derive a class from this class for any specialization. The value returned from GetCategory should be preserved and the pure virtual function GetName must be overridden to return an unique name.

Concurrency:

Multithread safe.

Resource Use:

No special requirements.

Member Function: TFontWidthStyle::TFontWidthStyle

TFontWidthStyle ()
TFontWidthStyle (GCoordinate)
TFontWidthStyle (const TFontWidthStyle &)

Interface Category:

API.

Purpose:

Default constructor.
Creates a new TFontWidthStyle object and initializes the width to the specified GCoordinate's value.
Copy constructor.

Calling Context:

Called by the stream-in operators.
Call this function directly.
Called to copy an object.

Parameters:

Takes no parameters.
GCoordinate -The initial width for this object.
const TFontWidthStyle & -The object to be copied.

Return Value:

None.

Exceptions:

Throws no exceptions, passes all exceptions through.

Concurrency:

Multithread safe.

Other Considerations:

None.

Member Function: TFontWidthStyle::~TFontWidthStyle

virtual ~ TFontWidthStyle ()

Interface Category:

API.

Purpose:

Destructor.

Calling Context:

Called to destroy an object.

Parameters:

Takes no parameters.

Return Value:

None.

Exceptions:

Throws no exceptions, passes all exceptions through.

Concurrency:

Multithread safe.

Other Considerations:

None.

Member Function: TFontWidthStyle::GetDefaultFontWidthStyle

static const TFontWidthStyle & GetDefaultFontWidthStyle ()

Interface Category:

API.

Purpose:

Returns an empty font width style. This empty TFontStyle object is used as a key for finding other TFontStyles objects in a TStyleSet by using the search functions of TStyleSet.

Calling Context:

Call this function directly.

Parameters:

Takes no parameters.

Return Value:

Returns an empty font width style.

Exceptions:

Throws TGraphicsInternalException when FontServer is not accessible, passes all other exceptions through.

Concurrency:

Multithread safe.

Other Considerations:

None.

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