pango-Coverage-Maps: Coverage Maps
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Methods and Functions Detailed Description Structures Enums and Flags Author(s) References

Unicode character range coverage storage

pangoCoverageNew()
pangoCoverageCopy(object)
pangoCoverageGet(object, index)
pangoCoverageMax(object, other)
pangoCoverageSet(object, index, level)
pangoCoverageToBytes(object)
pangoCoverageFromBytes(bytes)

It is often necessary in Pango to determine if a particular font can represent a particular character, and also how well it can represent that character. The PangoCoverage is a data structure that is used to represent that information.

PangoCoverage: The PangoCoverage structure represents a map from Unicode characters to PangoCoverageLevel. It is an opaque structure with no public fields.

PangoCoverageLevel

Used to indicate how well a font can represent a particular Unicode character point for a particular script.

none: The character is not representable with the font.
fallback: The character is represented in a way that may be comprehensible but is not the correct graphical form. For instance, a Hangul character represented as a a sequence of Jamos, or a Latin transliteration of a Cyrillic word.
approximate: The character is represented as basically the correct graphical form, but with a stylistic variant inappropriate for the current script.
exact: The character is represented as the correct graphical form.