/*
* Copyright (C) 2009 Red Hat, Inc.
*
- * This is part of HarfBuzz, an OpenType Layout engine library.
+ * This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* hb_unicode_funcs_t
*/
-static hb_unicode_funcs_t _hb_unicode_funcs_nil = {
+static hb_codepoint_t hb_unicode_get_mirroring_nil (hb_codepoint_t unicode) { return unicode; }
+static hb_category_t hb_unicode_get_general_category_nil (hb_codepoint_t unicode HB_UNUSED) { return HB_CATEGORY_OTHER_LETTER; }
+static hb_script_t hb_unicode_get_script_nil (hb_codepoint_t unicode HB_UNUSED) { return HB_SCRIPT_UNKNOWN; }
+static unsigned int hb_unicode_get_combining_class_nil (hb_codepoint_t unicode HB_UNUSED) { return 0; }
+static unsigned int hb_unicode_get_eastasian_width_nil (hb_codepoint_t unicode HB_UNUSED) { return 1; }
+
+hb_unicode_funcs_t _hb_unicode_funcs_nil = {
HB_REFERENCE_COUNT_INVALID, /* ref_count */
- NULL, /*get_general_category */
- NULL, /*get_combining_class */
- NULL, /*get_mirroring_char */
- NULL, /*get_script */
- NULL /*get_eastasian_width */
+ TRUE, /* immutable */
+
+ hb_unicode_get_general_category_nil,
+ hb_unicode_get_combining_class_nil,
+ hb_unicode_get_mirroring_nil,
+ hb_unicode_get_script_nil,
+ hb_unicode_get_eastasian_width_nil
};
hb_unicode_funcs_t *
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
+ *ufuncs = _hb_unicode_funcs_nil;
+ HB_OBJECT_DO_INIT (ufuncs);
+
return ufuncs;
}
*ufuncs = *other_ufuncs;
HB_OBJECT_DO_INIT (ufuncs);
+ ufuncs->immutable = FALSE;
return ufuncs;
}
-
void
-hb_unicode_funcs_set_mirroring_char_func (hb_unicode_funcs_t *ufuncs,
- hb_unicode_get_mirroring_char_func_t mirroring_char_func)
+hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs)
{
if (HB_OBJECT_IS_INERT (ufuncs))
return;
- ufuncs->get_mirroring_char = mirroring_char_func;
+ ufuncs->immutable = TRUE;
+}
+
+
+void
+hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs,
+ hb_unicode_get_mirroring_func_t mirroring_func)
+{
+ if (ufuncs->immutable)
+ return;
+
+ ufuncs->get_mirroring = mirroring_func ? mirroring_func : hb_unicode_get_mirroring_nil;
}
void
hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_general_category_func_t general_category_func)
{
- if (HB_OBJECT_IS_INERT (ufuncs))
+ if (ufuncs->immutable)
return;
- ufuncs->get_general_category = general_category_func;
+ ufuncs->get_general_category = general_category_func ? general_category_func : hb_unicode_get_general_category_nil;
}
void
hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_script_func_t script_func)
{
- if (HB_OBJECT_IS_INERT (ufuncs))
+ if (ufuncs->immutable)
return;
- ufuncs->get_script = script_func;
+ ufuncs->get_script = script_func ? script_func : hb_unicode_get_script_nil;
}
void
hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_combining_class_func_t combining_class_func)
{
- if (HB_OBJECT_IS_INERT (ufuncs))
+ if (ufuncs->immutable)
return;
- ufuncs->get_combining_class = combining_class_func;
+ ufuncs->get_combining_class = combining_class_func ? combining_class_func : hb_unicode_get_combining_class_nil;
}
void
hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs,
hb_unicode_get_eastasian_width_func_t eastasian_width_func)
{
- if (HB_OBJECT_IS_INERT (ufuncs))
+ if (ufuncs->immutable)
return;
- ufuncs->get_eastasian_width = eastasian_width_func;
+ ufuncs->get_eastasian_width = eastasian_width_func ? eastasian_width_func : hb_unicode_get_eastasian_width_nil;
+}
+
+
+hb_codepoint_t
+hb_unicode_get_mirroring (hb_unicode_funcs_t *ufuncs,
+ hb_codepoint_t unicode)
+{
+ return ufuncs->get_mirroring (unicode);
+}
+
+hb_category_t
+hb_unicode_get_general_category (hb_unicode_funcs_t *ufuncs,
+ hb_codepoint_t unicode)
+{
+ return ufuncs->get_general_category (unicode);
+}
+
+hb_script_t
+hb_unicode_get_script (hb_unicode_funcs_t *ufuncs,
+ hb_codepoint_t unicode)
+{
+ return ufuncs->get_script (unicode);
+}
+
+unsigned int
+hb_unicode_get_combining_class (hb_unicode_funcs_t *ufuncs,
+ hb_codepoint_t unicode)
+{
+ return ufuncs->get_combining_class (unicode);
+}
+
+unsigned int
+hb_unicode_get_eastasian_width (hb_unicode_funcs_t *ufuncs,
+ hb_codepoint_t unicode)
+{
+ return ufuncs->get_eastasian_width (unicode);
}
+
+
+#define LTR HB_DIRECTION_LTR
+#define RTL HB_DIRECTION_RTL
+const hb_direction_t horiz_dir[] =
+{
+ LTR, /* Zyyy */
+ LTR, /* Qaai */
+ RTL, /* Arab */
+ LTR, /* Armn */
+ LTR, /* Beng */
+ LTR, /* Bopo */
+ LTR, /* Cher */
+ LTR, /* Qaac */
+ LTR, /* Cyrl (Cyrs) */
+ LTR, /* Dsrt */
+ LTR, /* Deva */
+ LTR, /* Ethi */
+ LTR, /* Geor (Geon, Geoa) */
+ LTR, /* Goth */
+ LTR, /* Grek */
+ LTR, /* Gujr */
+ LTR, /* Guru */
+ LTR, /* Hani */
+ LTR, /* Hang */
+ RTL, /* Hebr */
+ LTR, /* Hira */
+ LTR, /* Knda */
+ LTR, /* Kana */
+ LTR, /* Khmr */
+ LTR, /* Laoo */
+ LTR, /* Latn (Latf, Latg) */
+ LTR, /* Mlym */
+ LTR, /* Mong */
+ LTR, /* Mymr */
+ LTR, /* Ogam */
+ LTR, /* Ital */
+ LTR, /* Orya */
+ LTR, /* Runr */
+ LTR, /* Sinh */
+ RTL, /* Syrc (Syrj, Syrn, Syre) */
+ LTR, /* Taml */
+ LTR, /* Telu */
+ RTL, /* Thaa */
+ LTR, /* Thai */
+ LTR, /* Tibt */
+ LTR, /* Cans */
+ LTR, /* Yiii */
+ LTR, /* Tglg */
+ LTR, /* Hano */
+ LTR, /* Buhd */
+ LTR, /* Tagb */
+
+ /* Unicode-4.0 additions */
+ LTR, /* Brai */
+ LTR, /* Cprt */
+ LTR, /* Limb */
+ LTR, /* Osma */
+ LTR, /* Shaw */
+ LTR, /* Linb */
+ LTR, /* Tale */
+ LTR, /* Ugar */
+
+ /* Unicode-4.1 additions */
+ LTR, /* Talu */
+ LTR, /* Bugi */
+ LTR, /* Glag */
+ LTR, /* Tfng */
+ LTR, /* Sylo */
+ LTR, /* Xpeo */
+ LTR, /* Khar */
+
+ /* Unicode-5.0 additions */
+ LTR, /* Zzzz */
+ LTR, /* Bali */
+ LTR, /* Xsux */
+ RTL, /* Phnx */
+ LTR, /* Phag */
+ RTL, /* Nkoo */
+
+ /* Unicode-5.1 additions */
+ LTR, /* Kali */
+ LTR, /* Lepc */
+ LTR, /* Rjng */
+ LTR, /* Sund */
+ LTR, /* Saur */
+ LTR, /* Cham */
+ LTR, /* Olck */
+ LTR, /* Vaii */
+ LTR, /* Cari */
+ LTR, /* Lyci */
+ LTR /* Lydi */
+};
+#undef LTR
+#undef RTL
+
+HB_INTERNAL hb_direction_t
+_hb_script_get_horizontal_direction (hb_script_t script)
+{
+ if (unlikely ((unsigned int) script >= ARRAY_LENGTH (horiz_dir)))
+ return HB_DIRECTION_LTR;
+
+ return horiz_dir[script];
+}
projects / framework / uifw / harfbuzz.git / blobdiff