diff options
Diffstat (limited to 'pango/pango-impl-utils.h')
| -rw-r--r-- | pango/pango-impl-utils.h | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/pango/pango-impl-utils.h b/pango/pango-impl-utils.h index a0183d69..55c743df 100644 --- a/pango/pango-impl-utils.h +++ b/pango/pango-impl-utils.h @@ -128,8 +128,46 @@ pango_glyph_string_reverse_range (PangoGlyphString *glyphs, } } -/* The cairo hexbox drawing code assumes - * that these nicks are 1-6 ASCII chars +static inline gboolean +pango_is_default_ignorable (gunichar ch) +{ + int plane = ch >> 16; + + if (G_LIKELY (plane == 0)) + { + int page = ch >> 8; + switch (page) + { + case 0x00: return ch == 0x00ad; + case 0x03: return ch == 0x034f; + case 0x06: return ch == 0x061c; + case 0x17: return (0x17b4 <= ch && ch <= 0x17b5); + case 0x18: return (0x180b <= ch && ch <= 0x180e); + case 0x20: return (0x200b <= ch && ch <= 0x200f) || + (0x202a <= ch && ch <= 0x202e) || + (0x2060 <= ch && ch <= 0x206f); + case 0xfe: return (0xfe00 <= ch && ch <= 0xfe0f) || ch == 0xfeff; + case 0xff: return (0xfff0 <= ch && ch <= 0xfff8); + default: return FALSE; + } + } + else + { + /* Other planes */ + switch (plane) + { + case 0x01: return (0x1d173 <= ch && ch <= 0x1d17a); + case 0x0e: return (0xe0000 <= ch && ch <= 0xe0fff); + default: return FALSE; + } + } +} + +/* These are the default ignorables that we render as hexboxes + * with nicks if PANGO_SHOW_IGNORABLES is used. + * + * The cairo hexbox drawing code assumes that these nicks are + * 1-6 ASCII chars */ static struct { gunichar ch; |