Struct

PangoOT.RulesetDescription

Description [src]

struct PangoOTRulesetDescription {
  PangoScript script;
  PangoLanguage* language;
  const PangoOTFeatureMap* static_gsub_features;
  guint n_static_gsub_features;
  const PangoOTFeatureMap* static_gpos_features;
  guint n_static_gpos_features;
  const PangoOTFeatureMap* other_features;
  guint n_other_features;
}

The PangoOTRuleset structure holds all the information needed to build a complete PangoOTRuleset from an OpenType font. The main use of this struct is to act as the key for a per-font hash of rulesets. The user populates a ruleset description and gets the ruleset using pango_ot_ruleset_get_for_description() or create a new one using pango_ot_ruleset_new_from_description().

Structure members
script

a PangoScript.

language

a PangoLanguage.

static_gsub_features

static map of GSUB features, or NULL.

n_static_gsub_features

length of static_gsub_features, or 0.

static_gpos_features

static map of GPOS features, or NULL.

n_static_gpos_features

length of static_gpos_features, or 0.

other_features

map of extra features to add to both GSUB and GPOS, or NULL. Unlike the static maps, this pointer need not live beyond the life of function calls taking this struct.

n_other_features

length of other_features, or 0.

Instance methods

pango_ot_ruleset_description_copy

Creates a copy of desc, which should be freed with pango_ot_ruleset_description_free(). Primarily used internally by pango_ot_ruleset_get_for_description() to cache rulesets for ruleset descriptions.

pango_ot_ruleset_description_equal

Compares two ruleset descriptions for equality. Two ruleset descriptions are considered equal if the rulesets they describe are provably identical. This means that their script, language, and all feature sets should be equal. For static feature sets, the array addresses are compared directly, while for other features, the list of features is compared one by one. (Two ruleset descriptions may result in identical rulesets being created, but still compare FALSE.)

pango_ot_ruleset_description_free

Frees a ruleset description allocated by pango_ot_ruleset_description_copy().

pango_ot_ruleset_description_hash

Computes a hash of a PangoOTRulesetDescription structure suitable to be used, for example, as an argument to g_hash_table_new().