PangoScriptIter

typedef struct _PangoScriptIter PangoScriptIter;

A PangoScriptIter is used to iterate through a string and identify ranges in different scripts.

enum PangoScript

typedef enum {                         /* ISO 15924 code */
      PANGO_SCRIPT_INVALID_CODE = -1,
      PANGO_SCRIPT_COMMON       = 0,   /* Zyyy */
      PANGO_SCRIPT_INHERITED,          /* Qaai */
      PANGO_SCRIPT_ARABIC,             /* Arab */
      PANGO_SCRIPT_ARMENIAN,           /* Armn */
      PANGO_SCRIPT_BENGALI,            /* Beng */
      PANGO_SCRIPT_BOPOMOFO,           /* Bopo */
      PANGO_SCRIPT_CHEROKEE,           /* Cher */
      PANGO_SCRIPT_COPTIC,             /* Qaac */
      PANGO_SCRIPT_CYRILLIC,           /* Cyrl (Cyrs) */
      PANGO_SCRIPT_DESERET,            /* Dsrt */
      PANGO_SCRIPT_DEVANAGARI,         /* Deva */
      PANGO_SCRIPT_ETHIOPIC,           /* Ethi */
      PANGO_SCRIPT_GEORGIAN,           /* Geor (Geon, Geoa) */
      PANGO_SCRIPT_GOTHIC,             /* Goth */
      PANGO_SCRIPT_GREEK,              /* Grek */
      PANGO_SCRIPT_GUJARATI,           /* Gujr */
      PANGO_SCRIPT_GURMUKHI,           /* Guru */
      PANGO_SCRIPT_HAN,                /* Hani */
      PANGO_SCRIPT_HANGUL,             /* Hang */
      PANGO_SCRIPT_HEBREW,             /* Hebr */
      PANGO_SCRIPT_HIRAGANA,           /* Hira */
      PANGO_SCRIPT_KANNADA,            /* Knda */
      PANGO_SCRIPT_KATAKANA,           /* Kana */
      PANGO_SCRIPT_KHMER,              /* Khmr */
      PANGO_SCRIPT_LAO,                /* Laoo */
      PANGO_SCRIPT_LATIN,              /* Latn (Latf, Latg) */
      PANGO_SCRIPT_MALAYALAM,          /* Mlym */
      PANGO_SCRIPT_MONGOLIAN,          /* Mong */
      PANGO_SCRIPT_MYANMAR,            /* Mymr */
      PANGO_SCRIPT_OGHAM,              /* Ogam */
      PANGO_SCRIPT_OLD_ITALIC,         /* Ital */
      PANGO_SCRIPT_ORIYA,              /* Orya */
      PANGO_SCRIPT_RUNIC,              /* Runr */
      PANGO_SCRIPT_SINHALA,            /* Sinh */
      PANGO_SCRIPT_SYRIAC,             /* Syrc (Syrj, Syrn, Syre) */
      PANGO_SCRIPT_TAMIL,              /* Taml */
      PANGO_SCRIPT_TELUGU,             /* Telu */
      PANGO_SCRIPT_THAANA,             /* Thaa */
      PANGO_SCRIPT_THAI,               /* Thai */
      PANGO_SCRIPT_TIBETAN,            /* Tibt */
      PANGO_SCRIPT_CANADIAN_ABORIGINAL, /* Cans */
      PANGO_SCRIPT_YI,                 /* Yiii */
      PANGO_SCRIPT_TAGALOG,            /* Tglg */
      PANGO_SCRIPT_HANUNOO,            /* Hano */
      PANGO_SCRIPT_BUHID,              /* Buhd */
      PANGO_SCRIPT_TAGBANWA,           /* Tagb */

      /* Unicode-4.0 additions */
      PANGO_SCRIPT_BRAILLE,            /* Brai */
      PANGO_SCRIPT_CYPRIOT,            /* Cprt */
      PANGO_SCRIPT_LIMBU,              /* Limb */
      PANGO_SCRIPT_OSMANYA,            /* Osma */
      PANGO_SCRIPT_SHAVIAN,            /* Shaw */
      PANGO_SCRIPT_LINEAR_B,           /* Linb */
      PANGO_SCRIPT_TAI_LE,             /* Tale */
      PANGO_SCRIPT_UGARITIC,           /* Ugar */

      /* Unicode-4.1 additions */
      PANGO_SCRIPT_NEW_TAI_LUE,        /* Talu */
      PANGO_SCRIPT_BUGINESE,           /* Bugi */
      PANGO_SCRIPT_GLAGOLITIC,         /* Glag */
      PANGO_SCRIPT_TIFINAGH,           /* Tfng */
      PANGO_SCRIPT_SYLOTI_NAGRI,       /* Sylo */
      PANGO_SCRIPT_OLD_PERSIAN,        /* Xpeo */
      PANGO_SCRIPT_KHAROSHTHI,         /* Khar */

      /* Unicode-5.0 additions */
      PANGO_SCRIPT_UNKNOWN,            /* Zzzz */
      PANGO_SCRIPT_BALINESE,           /* Bali */
      PANGO_SCRIPT_CUNEIFORM,          /* Xsux */
      PANGO_SCRIPT_PHOENICIAN,         /* Phnx */
      PANGO_SCRIPT_PHAGS_PA,           /* Phag */
      PANGO_SCRIPT_NKO                 /* Nkoo */
} PangoScript;

The PangoScript enumeration identifies different writing systems. The values correspond to the names as defined in the Unicode standard. Note that new types may be added in the future. Applications should be ready to handle unknown values. See Unicode Standard Annex "" Script names.

PANGO_TYPE_SCRIPT

#define PANGO_TYPE_SCRIPT (pango_script_get_type())

The GObject type for PangoScript

pango_script_for_unichar ()

PangoScript         pango_script_for_unichar            (gunichar ch);

Looks up the PangoScript for a particular character (as defined by Unicode Standard Annex 24). No check is made for ch being a valid Unicode character; if you pass in invalid character, the result is undefined.

Since 1.4

pango_script_get_sample_language ()

PangoLanguage*      pango_script_get_sample_language    (PangoScript script);

Given a script, finds a language tag that is reasonably representative of that script. This will usually be the most widely spoken or used language written in that script: for instance, the sample language for PANGO_SCRIPT_CYRILLIC is ru (Russian), the sample language for PANGO_SCRIPT_ARABIC is ar.

For some scripts, no sample language will be returned because there is no language that is sufficiently representative. The best example of this is PANGO_SCRIPT_HAN, where various different variants of written Chinese, Japanese, and Korean all use significantly different sets of Han characters and forms of shared characters. No sample language can be provided for many historical scripts as well.

As of 1.18, this function checks the environment variables PANGO_LANGUAGE and LANGUAGE (checked in that order) first. If one of them is set, it is parsed as a list of language tags separated by colons or other separators. This function will return the first language in the parsed list that Pango believes may use script for writing. This last predicate is tested using pango_language_includes_script(). This can be used to control Pango's font selection for non-primary languages. For example, a PANGO_LANGUAGE enviroment variable set to "en:fa" makes Pango choose fonts suitable for Persian (fa) instead of Arabic (ar) when a segment of Arabic text is found in an otherwise non-Arabic text. The same trick can be used to choose a default language for PANGO_SCRIPT_HAN when setting context language is not feasible.

Since 1.4

pango_language_includes_script ()

gboolean            pango_language_includes_script      (PangoLanguage *language,
                                                         PangoScript script);

Determines if script is one of the scripts used to write language. The returned value is conservative; if nothing is known about the language tag language, TRUE will be returned, since, as far as Pango knows, script might be used to write language.

This routine is used in Pango's itemization process when determining if a supplied language tag is relevant to a particular section of text. It probably is not useful for applications in most circumstances.

Since 1.4

pango_script_iter_new ()

PangoScriptIter*    pango_script_iter_new               (const char *text,
                                                         int length);

Create a new PangoScriptIter, used to break a string of Unicode into runs by text. No copy is made of text, so the caller needs to make sure it remains valid until the iterator is freed with pango_script_iter_free().x

Since 1.4

pango_script_iter_get_range ()

void                pango_script_iter_get_range         (PangoScriptIter *iter,
                                                         G_CONST_RETURN char **start,
                                                         G_CONST_RETURN char **end,
                                                         PangoScript *script);

Gets information about the range to which iter currently points. The range is the set of locations p where *start <= p < *end. (That is, it doesn't include the character stored at *end)

Since 1.4

pango_script_iter_next ()

gboolean            pango_script_iter_next              (PangoScriptIter *iter);

Advances a PangoScriptIter to the next range. If iter is already at the end, it is left unchanged and FALSE is returned.

Since 1.4

pango_script_iter_free ()

void                pango_script_iter_free              (PangoScriptIter *iter);

Frees a PangoScriptIter created with pango_script_iter_new().

Since 1.4