RCSS implements a simpler version of the CSS2 font model when dealing with text rendering. This is for two reasons:

• The document renderer is fully under the control of the author, so (for example) a specific font can be assumed to exist.
• Improved performance.

Fonts are specified in a similar fashion. NOTE: You will need to load all ttf files via the C++ interfaces before they can be used in RCSS.

Font specification properties

Font family: the ‘font-family’ property

font-family

This property specifies the name of a family of fonts to be used to render sections of text descending from the element. Note that, unlike CSS, only a single font family can be specified with this property, not a comma-delimited font set.

Font styling: the ‘font-style’ and ‘font-weight’ properties

font-style

This property can be used to request normal or italicised versions of a font from within a font-family. Note that RCSS does not yet support oblique font styles.

font-weight

This property can be used to request normal or bolded versions of a font from within a font-family. A numeric value can be specified for more granularity on supported fonts. The range is based on the commonly used OpenType specification: 100 (Thin), 200 (Extra Light), 300 (Light), 400 (Normal), 500 (Medium), 600 (Semi Bold), 700 (Bold), 800 (Extra Bold), 900 (Black).

Font size: the ‘font-size’ property

font-size

Values have the following meanings:

<length>

The font size is generated at the point size requested. For font-relative units (such as em ), the font size is relative to the parent element’s font size.

<percentage>

The font size is generated at the point size of the element’s parent’s font, scaled by the percentage.

Font shorthand

font

A shorthand property for setting all the font properties at once.