IlvFont: The Font Class
A text string is drawn with specific spacing values as in the following illustration:
Figure 3.4 Spacing Values
You can get the parameters of an
IlvFont object by using the member functions
getFamily,
getSize,
getStyle, and
getFoundry.
The member functions
ascent,
descent, and
height return the font metrics.
You can also get the metrics of a specific string by means of calls to the member functions
stringWidth,
stringHeight, and
sizes.
The member function
isFixed returns
IlTrue if the font object has a fixed width for all characters (which is not the case in the above figure).
You can also obtain the width of the narrowest and widest characters of this font by means of the width values returned by the two member functions
maxWidth and
minWidth. When both return the same value,
isFixed returns
IlTrue.
Additional details of the font class are given in:
New Fonts
IlvFont does not have a public constructor. New fonts must be obtained from the display using one of the two member functions
IlvDisplay::getFont. You can specify a font name or a set of font characteristics:
Family
Size
Style
Foundry
Font Names
All fonts have a name. When a font is not created using a valid font name but a set of values— family, size, style and foundry—Rogue Wave Views computes from these values a name of the form:
"%family-size-style-foundry"
where:
family is the string specified as the parameter family
. size is the ASCII representation of the parameter size.
style is a combination of the letters
B,
I and
U, standing respectively for bold, italic and underlined (upper and lower case do not matter). This field can be empty, in which case the normal style is assumed.
foundry is an optional string. It often identifies the company that designed the font. This field is seldom specified. When it is ignored, the trailing ‘
-’ can be omitted too.
Fonts cannot be renamed.
Following are examples of syntactically well-formed Rogue Wave Views font names (which are not necessarily valid font names in the sense that they may not exist on all platforms):
"%helvetica-12-" "%time-12-BU" "%courier-14-i-adobe" "%terminal-11--bitstream"
Version 5.8
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