Unicode character range coverage storage
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
<pango-coverage> is a data structure that is used to represent that
information.
<pango-coverage>)Create a new
<pango-coverage>
- ret
- the newly allocated
<pango-coverage>, initialized to ‘PANGO_COVERAGE_NONE’ with a reference count of one, which should be freed withpango-coverage-unref.
<pango-coverage>) ⇒ (ret <pango-coverage>)Copy an existing
<pango-coverage>. (This function may now be unnecessary since we refcount the structure. File a bug if you use it.)
- coverage
- a
<pango-coverage>- ret
- the newly allocated
<pango-coverage>, with a reference count of one, which should be freed withpango-coverage-unref.
<pango-coverage>) (index_ int) ⇒ (ret <pango-coverage-level>)Determine whether a particular index is covered by coverage
- coverage
- a
<pango-coverage>- index
- the index to check
- ret
- the coverage level of coverage for character index.
<pango-coverage>) (other <pango-coverage>)Set the coverage for each index in coverage to be the max (better) value of the current coverage for the index and the coverage for the corresponding index in other.
- coverage
- a
<pango-coverage>- other
- another
<pango-coverage>