Handles Tai Tham, Cham, and New Tai Lue for now.
hb-ot-shape-complex-indic.cc \
hb-ot-shape-complex-indic-machine.hh \
hb-ot-shape-complex-indic-private.hh \
- hb-ot-shape-complex-indic-table.hh \
+ hb-ot-shape-complex-indic-table.cc \
hb-ot-shape-complex-myanmar.cc \
hb-ot-shape-complex-myanmar-machine.hh \
+ hb-ot-shape-complex-sea.cc \
+ hb-ot-shape-complex-sea-machine.hh \
hb-ot-shape-complex-thai.cc \
hb-ot-shape-complex-private.hh \
hb-ot-shape-normalize-private.hh \
unicode-tables: arabic-table indic-table
indic-table: gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt
- $(AM_V_GEN) $(builddir)/$^ > hb-ot-shape-complex-indic-table.hh.tmp && \
- mv hb-ot-shape-complex-indic-table.hh.tmp $(srcdir)/hb-ot-shape-complex-indic-table.hh || \
- ($(RM) hb-ot-shape-complex-indic-table.hh.tmp; false)
+ $(AM_V_GEN) $(builddir)/$^ > hb-ot-shape-complex-indic-table.cc.tmp && \
+ mv hb-ot-shape-complex-indic-table.cc.tmp $(srcdir)/hb-ot-shape-complex-indic-table.cc || \
+ ($(RM) hb-ot-shape-complex-indic-table.cc.tmp; false)
arabic-table: gen-arabic-table.py ArabicShaping.txt UnicodeData.txt
$(AM_V_GEN) $(builddir)/$^ > hb-ot-shape-complex-arabic-table.hh.tmp && \
BUILT_SOURCES += \
hb-ot-shape-complex-indic-machine.hh \
hb-ot-shape-complex-myanmar-machine.hh \
+ hb-ot-shape-complex-sea-machine.hh \
$(NULL)
EXTRA_DIST += \
hb-ot-shape-complex-indic-machine.rl \
hb-ot-shape-complex-myanmar-machine.rl \
+ hb-ot-shape-complex-sea-machine.rl \
$(NULL)
%.hh: %.rl
$(AM_V_GEN)$(top_srcdir)/missing --run ragel -e -F1 -o "$@.tmp" "$<" && \
print " * %s" % (l.strip())
print " */"
print
-print "#ifndef HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH"
-print "#define HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH"
+print '#include "hb-ot-shape-complex-indic-private.hh"'
print
# Shorten values
occupancy = used * 100. / total
print "}; /* Table occupancy: %d%% */" % occupancy
print
-print "static INDIC_TABLE_ELEMENT_TYPE"
-print "get_indic_categories (hb_codepoint_t u)"
+print "INDIC_TABLE_ELEMENT_TYPE"
+print "hb_indic_get_categories (hb_codepoint_t u)"
print "{"
for (start,end) in zip (starts, ends):
offset = "indic_offset_0x%04x" % start
print "#undef %s_%s" % \
(what_short[i], short[i][v])
print
-print "#endif /* HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH */"
-print
print "/* == End of generated table == */"
# Maintain at least 30% occupancy in the table */
#include "hb-ot-shape-private.hh" /* XXX Remove */
-/* buffer var allocations */
-#define indic_category() complex_var_u8_0() /* indic_category_t */
-#define indic_position() complex_var_u8_1() /* indic_matra_category_t */
-
-
#define INDIC_TABLE_ELEMENT_TYPE uint16_t
/* Cateories used in the OpenType spec:
ASSERT_STATIC_EXPR_ZERO (S < 255 && M < 255) + \
((M << 8) | S))
-
-#include "hb-ot-shape-complex-indic-table.hh"
-
-
-#define IN_HALF_BLOCK(u, Base) (((u) & ~0x7F) == (Base))
-
-#define IS_DEVA(u) (IN_HALF_BLOCK (u, 0x0900))
-#define IS_BENG(u) (IN_HALF_BLOCK (u, 0x0980))
-#define IS_GURU(u) (IN_HALF_BLOCK (u, 0x0A00))
-#define IS_GUJR(u) (IN_HALF_BLOCK (u, 0x0A80))
-#define IS_ORYA(u) (IN_HALF_BLOCK (u, 0x0B00))
-#define IS_TAML(u) (IN_HALF_BLOCK (u, 0x0B80))
-#define IS_TELU(u) (IN_HALF_BLOCK (u, 0x0C00))
-#define IS_KNDA(u) (IN_HALF_BLOCK (u, 0x0C80))
-#define IS_MLYM(u) (IN_HALF_BLOCK (u, 0x0D00))
-#define IS_SINH(u) (IN_HALF_BLOCK (u, 0x0D80))
-#define IS_KHMR(u) (IN_HALF_BLOCK (u, 0x1780))
-
-
-#define MATRA_POS_LEFT(u) POS_PRE_M
-#define MATRA_POS_RIGHT(u) ( \
- IS_DEVA(u) ? POS_AFTER_SUB : \
- IS_BENG(u) ? POS_AFTER_POST : \
- IS_GURU(u) ? POS_AFTER_POST : \
- IS_GUJR(u) ? POS_AFTER_POST : \
- IS_ORYA(u) ? POS_AFTER_POST : \
- IS_TAML(u) ? POS_AFTER_POST : \
- IS_TELU(u) ? (u <= 0x0C42 ? POS_BEFORE_SUB : POS_AFTER_SUB) : \
- IS_KNDA(u) ? (u < 0x0CC3 || u > 0xCD6 ? POS_BEFORE_SUB : POS_AFTER_SUB) : \
- IS_MLYM(u) ? POS_AFTER_POST : \
- IS_SINH(u) ? POS_AFTER_SUB : \
- IS_KHMR(u) ? POS_AFTER_POST : \
- /*default*/ POS_AFTER_SUB \
- )
-#define MATRA_POS_TOP(u) ( /* BENG and MLYM don't have top matras. */ \
- IS_DEVA(u) ? POS_AFTER_SUB : \
- IS_GURU(u) ? POS_AFTER_POST : /* Deviate from spec */ \
- IS_GUJR(u) ? POS_AFTER_SUB : \
- IS_ORYA(u) ? POS_AFTER_MAIN : \
- IS_TAML(u) ? POS_AFTER_SUB : \
- IS_TELU(u) ? POS_BEFORE_SUB : \
- IS_KNDA(u) ? POS_BEFORE_SUB : \
- IS_SINH(u) ? POS_AFTER_SUB : \
- IS_KHMR(u) ? POS_AFTER_POST : \
- /*default*/ POS_AFTER_SUB \
- )
-#define MATRA_POS_BOTTOM(u) ( \
- IS_DEVA(u) ? POS_AFTER_SUB : \
- IS_BENG(u) ? POS_AFTER_SUB : \
- IS_GURU(u) ? POS_AFTER_POST : \
- IS_GUJR(u) ? POS_AFTER_POST : \
- IS_ORYA(u) ? POS_AFTER_SUB : \
- IS_TAML(u) ? POS_AFTER_POST : \
- IS_TELU(u) ? POS_BEFORE_SUB : \
- IS_KNDA(u) ? POS_BEFORE_SUB : \
- IS_MLYM(u) ? POS_AFTER_POST : \
- IS_SINH(u) ? POS_AFTER_SUB : \
- IS_KHMR(u) ? POS_AFTER_POST : \
- /*default*/ POS_AFTER_SUB \
- )
-
-
-static inline indic_position_t
-matra_position (hb_codepoint_t u, indic_position_t side)
-{
- switch ((int) side)
- {
- case POS_PRE_C: return MATRA_POS_LEFT (u);
- case POS_POST_C: return MATRA_POS_RIGHT (u);
- case POS_ABOVE_C: return MATRA_POS_TOP (u);
- case POS_BELOW_C: return MATRA_POS_BOTTOM (u);
- };
- return side;
-}
-
-
-
-/* XXX
- * This is a hack for now. We should move this data into the main Indic table.
- * Or completely remove it and just check in the tables.
- */
-static const hb_codepoint_t ra_chars[] = {
- 0x0930, /* Devanagari */
- 0x09B0, /* Bengali */
- 0x09F0, /* Bengali */
- 0x0A30, /* Gurmukhi */ /* No Reph */
- 0x0AB0, /* Gujarati */
- 0x0B30, /* Oriya */
- 0x0BB0, /* Tamil */ /* No Reph */
- 0x0C30, /* Telugu */ /* Reph formed only with ZWJ */
- 0x0CB0, /* Kannada */
- 0x0D30, /* Malayalam */ /* No Reph, Logical Repha */
-
- 0x0DBB, /* Sinhala */ /* Reph formed only with ZWJ */
-
- 0x179A, /* Khmer */ /* No Reph, Visual Repha */
-};
-
-static inline indic_position_t
-consonant_position (hb_codepoint_t u)
-{
- if ((u & ~0x007F) == 0x1780)
- return POS_BELOW_C; /* In Khmer coeng model, post and below forms should not be reordered. */
- return POS_BASE_C; /* Will recategorize later based on font lookups. */
-}
-
-static inline bool
-is_ra (hb_codepoint_t u)
-{
- for (unsigned int i = 0; i < ARRAY_LENGTH (ra_chars); i++)
- if (u == ra_chars[i])
- return true;
- return false;
-}
-
-
-static inline bool
-is_one_of (const hb_glyph_info_t &info, unsigned int flags)
-{
- /* If it ligated, all bets are off. */
- if (is_a_ligature (info)) return false;
- return !!(FLAG (info.indic_category()) & flags);
-}
-
-#define JOINER_FLAGS (FLAG (OT_ZWJ) | FLAG (OT_ZWNJ))
-static inline bool
-is_joiner (const hb_glyph_info_t &info)
-{
- return is_one_of (info, JOINER_FLAGS);
-}
-
-/* Note:
- *
- * We treat Vowels and placeholders as if they were consonants. This is safe because Vowels
- * cannot happen in a consonant syllable. The plus side however is, we can call the
- * consonant syllable logic from the vowel syllable function and get it all right! */
-#define CONSONANT_FLAGS (FLAG (OT_C) | FLAG (OT_CM) | FLAG (OT_Ra) | FLAG (OT_V) | FLAG (OT_NBSP) | FLAG (OT_DOTTEDCIRCLE))
-static inline bool
-is_consonant (const hb_glyph_info_t &info)
-{
- return is_one_of (info, CONSONANT_FLAGS);
-}
-
-#define HALANT_OR_COENG_FLAGS (FLAG (OT_H) | FLAG (OT_Coeng))
-static inline bool
-is_halant_or_coeng (const hb_glyph_info_t &info)
-{
- return is_one_of (info, HALANT_OR_COENG_FLAGS);
-}
-
-static inline void
-set_indic_properties (hb_glyph_info_t &info)
-{
- hb_codepoint_t u = info.codepoint;
- unsigned int type = get_indic_categories (u);
- indic_category_t cat = (indic_category_t) (type & 0x7F);
- indic_position_t pos = (indic_position_t) (type >> 8);
-
-
- /*
- * Re-assign category
- */
-
-
- /* The spec says U+0952 is OT_A. However, testing shows that Uniscribe
- * treats U+0951..U+0952 all as OT_VD.
- * TESTS:
- * U+092E,U+0947,U+0952
- * U+092E,U+0952,U+0947
- * U+092E,U+0947,U+0951
- * U+092E,U+0951,U+0947
- * */
- if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x0951, 0x0954)))
- cat = OT_VD;
-
- if (unlikely (u == 0x17D1))
- cat = OT_X;
- if (cat == OT_X &&
- unlikely (hb_in_range<hb_codepoint_t> (u, 0x17CB, 0x17D3))) /* Khmer Various signs */
- {
- /* These are like Top Matras. */
- cat = OT_M;
- pos = POS_ABOVE_C;
- }
- if (u == 0x17C6) /* Khmer Bindu doesn't like to be repositioned. */
- cat = OT_N;
-
- if (unlikely (u == 0x17D2)) cat = OT_Coeng; /* Khmer coeng */
- else if (unlikely (u == 0x200C)) cat = OT_ZWNJ;
- else if (unlikely (u == 0x200D)) cat = OT_ZWJ;
- else if (unlikely (u == 0x25CC)) cat = OT_DOTTEDCIRCLE;
- else if (unlikely (u == 0x0A71)) cat = OT_SM; /* GURMUKHI ADDAK. More like consonant medial. like 0A75. */
-
- if (cat == OT_Repha) {
- /* There are two kinds of characters marked as Repha:
- * - The ones that are GenCat=Mn are already positioned visually, ie. after base. (eg. Khmer)
- * - The ones that are GenCat=Lo is encoded logically, ie. beginning of syllable. (eg. Malayalam)
- *
- * We recategorize the first kind to look like a Nukta and attached to the base directly.
- */
- if (_hb_glyph_info_get_general_category (&info) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)
- cat = OT_N;
- }
-
-
-
- /*
- * Re-assign position.
- */
-
- if ((FLAG (cat) & CONSONANT_FLAGS))
- {
- pos = consonant_position (u);
- if (is_ra (u))
- cat = OT_Ra;
- }
- else if (cat == OT_M)
- {
- pos = matra_position (u, pos);
- }
- else if (cat == OT_SM || cat == OT_VD)
- {
- pos = POS_SMVD;
- }
-
- if (unlikely (u == 0x0B01)) pos = POS_BEFORE_SUB; /* Oriya Bindu is BeforeSub in the spec. */
-
-
-
- info.indic_category() = cat;
- info.indic_position() = pos;
-}
-
-
+HB_INTERNAL INDIC_TABLE_ELEMENT_TYPE
+hb_indic_get_categories (hb_codepoint_t u);
#endif /* HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH */
* # Date: 2012-05-14, 22:42:00 GMT [KW, LI]
*/
-#ifndef HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH
-#define HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH
+#include "hb-ot-shape-complex-indic-private.hh"
#define ISC_A INDIC_SYLLABIC_CATEGORY_AVAGRAHA /* 11 chars; Avagraha */
}; /* Table occupancy: 60% */
-static INDIC_TABLE_ELEMENT_TYPE
-get_indic_categories (hb_codepoint_t u)
+INDIC_TABLE_ELEMENT_TYPE
+hb_indic_get_categories (hb_codepoint_t u)
{
if (0x0900 <= u && u <= 0x10A0) return indic_table[u - 0x0900 + indic_offset_0x0900];
if (0x1700 <= u && u <= 0x1800) return indic_table[u - 0x1700 + indic_offset_0x1700];
#undef IMC_TR
#undef IMC_VOL
-#endif /* HB_OT_SHAPE_COMPLEX_INDIC_TABLE_HH */
-
/* == End of generated table == */
#include "hb-ot-shape-complex-indic-private.hh"
#include "hb-ot-layout-private.hh"
+/* buffer var allocations */
+#define indic_category() complex_var_u8_0() /* indic_category_t */
+#define indic_position() complex_var_u8_1() /* indic_position_t */
+
+
+/*
+ * Indic shaper.
+ */
+
+
+#define IN_HALF_BLOCK(u, Base) (((u) & ~0x7F) == (Base))
+
+#define IS_DEVA(u) (IN_HALF_BLOCK (u, 0x0900))
+#define IS_BENG(u) (IN_HALF_BLOCK (u, 0x0980))
+#define IS_GURU(u) (IN_HALF_BLOCK (u, 0x0A00))
+#define IS_GUJR(u) (IN_HALF_BLOCK (u, 0x0A80))
+#define IS_ORYA(u) (IN_HALF_BLOCK (u, 0x0B00))
+#define IS_TAML(u) (IN_HALF_BLOCK (u, 0x0B80))
+#define IS_TELU(u) (IN_HALF_BLOCK (u, 0x0C00))
+#define IS_KNDA(u) (IN_HALF_BLOCK (u, 0x0C80))
+#define IS_MLYM(u) (IN_HALF_BLOCK (u, 0x0D00))
+#define IS_SINH(u) (IN_HALF_BLOCK (u, 0x0D80))
+#define IS_KHMR(u) (IN_HALF_BLOCK (u, 0x1780))
+
+
+#define MATRA_POS_LEFT(u) POS_PRE_M
+#define MATRA_POS_RIGHT(u) ( \
+ IS_DEVA(u) ? POS_AFTER_SUB : \
+ IS_BENG(u) ? POS_AFTER_POST : \
+ IS_GURU(u) ? POS_AFTER_POST : \
+ IS_GUJR(u) ? POS_AFTER_POST : \
+ IS_ORYA(u) ? POS_AFTER_POST : \
+ IS_TAML(u) ? POS_AFTER_POST : \
+ IS_TELU(u) ? (u <= 0x0C42 ? POS_BEFORE_SUB : POS_AFTER_SUB) : \
+ IS_KNDA(u) ? (u < 0x0CC3 || u > 0xCD6 ? POS_BEFORE_SUB : POS_AFTER_SUB) : \
+ IS_MLYM(u) ? POS_AFTER_POST : \
+ IS_SINH(u) ? POS_AFTER_SUB : \
+ IS_KHMR(u) ? POS_AFTER_POST : \
+ /*default*/ POS_AFTER_SUB \
+ )
+#define MATRA_POS_TOP(u) ( /* BENG and MLYM don't have top matras. */ \
+ IS_DEVA(u) ? POS_AFTER_SUB : \
+ IS_GURU(u) ? POS_AFTER_POST : /* Deviate from spec */ \
+ IS_GUJR(u) ? POS_AFTER_SUB : \
+ IS_ORYA(u) ? POS_AFTER_MAIN : \
+ IS_TAML(u) ? POS_AFTER_SUB : \
+ IS_TELU(u) ? POS_BEFORE_SUB : \
+ IS_KNDA(u) ? POS_BEFORE_SUB : \
+ IS_SINH(u) ? POS_AFTER_SUB : \
+ IS_KHMR(u) ? POS_AFTER_POST : \
+ /*default*/ POS_AFTER_SUB \
+ )
+#define MATRA_POS_BOTTOM(u) ( \
+ IS_DEVA(u) ? POS_AFTER_SUB : \
+ IS_BENG(u) ? POS_AFTER_SUB : \
+ IS_GURU(u) ? POS_AFTER_POST : \
+ IS_GUJR(u) ? POS_AFTER_POST : \
+ IS_ORYA(u) ? POS_AFTER_SUB : \
+ IS_TAML(u) ? POS_AFTER_POST : \
+ IS_TELU(u) ? POS_BEFORE_SUB : \
+ IS_KNDA(u) ? POS_BEFORE_SUB : \
+ IS_MLYM(u) ? POS_AFTER_POST : \
+ IS_SINH(u) ? POS_AFTER_SUB : \
+ IS_KHMR(u) ? POS_AFTER_POST : \
+ /*default*/ POS_AFTER_SUB \
+ )
+
+static inline indic_position_t
+matra_position (hb_codepoint_t u, indic_position_t side)
+{
+ switch ((int) side)
+ {
+ case POS_PRE_C: return MATRA_POS_LEFT (u);
+ case POS_POST_C: return MATRA_POS_RIGHT (u);
+ case POS_ABOVE_C: return MATRA_POS_TOP (u);
+ case POS_BELOW_C: return MATRA_POS_BOTTOM (u);
+ };
+ return side;
+}
+
+/* XXX
+ * This is a hack for now. We should move this data into the main Indic table.
+ * Or completely remove it and just check in the tables.
+ */
+static const hb_codepoint_t ra_chars[] = {
+ 0x0930, /* Devanagari */
+ 0x09B0, /* Bengali */
+ 0x09F0, /* Bengali */
+ 0x0A30, /* Gurmukhi */ /* No Reph */
+ 0x0AB0, /* Gujarati */
+ 0x0B30, /* Oriya */
+ 0x0BB0, /* Tamil */ /* No Reph */
+ 0x0C30, /* Telugu */ /* Reph formed only with ZWJ */
+ 0x0CB0, /* Kannada */
+ 0x0D30, /* Malayalam */ /* No Reph, Logical Repha */
+
+ 0x0DBB, /* Sinhala */ /* Reph formed only with ZWJ */
+
+ 0x179A, /* Khmer */ /* No Reph, Visual Repha */
+};
+
+static inline indic_position_t
+consonant_position (hb_codepoint_t u)
+{
+ if ((u & ~0x007F) == 0x1780)
+ return POS_BELOW_C; /* In Khmer coeng model, post and below forms should not be reordered. */
+ return POS_BASE_C; /* Will recategorize later based on font lookups. */
+}
+
+static inline bool
+is_ra (hb_codepoint_t u)
+{
+ for (unsigned int i = 0; i < ARRAY_LENGTH (ra_chars); i++)
+ if (u == ra_chars[i])
+ return true;
+ return false;
+}
+
+static inline bool
+is_one_of (const hb_glyph_info_t &info, unsigned int flags)
+{
+ /* If it ligated, all bets are off. */
+ if (is_a_ligature (info)) return false;
+ return !!(FLAG (info.indic_category()) & flags);
+}
+
+#define JOINER_FLAGS (FLAG (OT_ZWJ) | FLAG (OT_ZWNJ))
+static inline bool
+is_joiner (const hb_glyph_info_t &info)
+{
+ return is_one_of (info, JOINER_FLAGS);
+}
+
+/* Note:
+ *
+ * We treat Vowels and placeholders as if they were consonants. This is safe because Vowels
+ * cannot happen in a consonant syllable. The plus side however is, we can call the
+ * consonant syllable logic from the vowel syllable function and get it all right! */
+#define CONSONANT_FLAGS (FLAG (OT_C) | FLAG (OT_CM) | FLAG (OT_Ra) | FLAG (OT_V) | FLAG (OT_NBSP) | FLAG (OT_DOTTEDCIRCLE))
+static inline bool
+is_consonant (const hb_glyph_info_t &info)
+{
+ return is_one_of (info, CONSONANT_FLAGS);
+}
+
+#define HALANT_OR_COENG_FLAGS (FLAG (OT_H) | FLAG (OT_Coeng))
+static inline bool
+is_halant_or_coeng (const hb_glyph_info_t &info)
+{
+ return is_one_of (info, HALANT_OR_COENG_FLAGS);
+}
+
+static inline void
+set_indic_properties (hb_glyph_info_t &info)
+{
+ hb_codepoint_t u = info.codepoint;
+ unsigned int type = hb_indic_get_categories (u);
+ indic_category_t cat = (indic_category_t) (type & 0x7F);
+ indic_position_t pos = (indic_position_t) (type >> 8);
+
+
+ /*
+ * Re-assign category
+ */
+
+
+ /* The spec says U+0952 is OT_A. However, testing shows that Uniscribe
+ * treats U+0951..U+0952 all as OT_VD.
+ * TESTS:
+ * U+092E,U+0947,U+0952
+ * U+092E,U+0952,U+0947
+ * U+092E,U+0947,U+0951
+ * U+092E,U+0951,U+0947
+ * */
+ if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x0951, 0x0954)))
+ cat = OT_VD;
+
+ if (unlikely (u == 0x17D1))
+ cat = OT_X;
+ if (cat == OT_X &&
+ unlikely (hb_in_range<hb_codepoint_t> (u, 0x17CB, 0x17D3))) /* Khmer Various signs */
+ {
+ /* These are like Top Matras. */
+ cat = OT_M;
+ pos = POS_ABOVE_C;
+ }
+ if (u == 0x17C6) /* Khmer Bindu doesn't like to be repositioned. */
+ cat = OT_N;
+
+ if (unlikely (u == 0x17D2)) cat = OT_Coeng; /* Khmer coeng */
+ else if (unlikely (u == 0x200C)) cat = OT_ZWNJ;
+ else if (unlikely (u == 0x200D)) cat = OT_ZWJ;
+ else if (unlikely (u == 0x25CC)) cat = OT_DOTTEDCIRCLE;
+ else if (unlikely (u == 0x0A71)) cat = OT_SM; /* GURMUKHI ADDAK. More like consonant medial. like 0A75. */
+
+ if (cat == OT_Repha) {
+ /* There are two kinds of characters marked as Repha:
+ * - The ones that are GenCat=Mn are already positioned visually, ie. after base. (eg. Khmer)
+ * - The ones that are GenCat=Lo is encoded logically, ie. beginning of syllable. (eg. Malayalam)
+ *
+ * We recategorize the first kind to look like a Nukta and attached to the base directly.
+ */
+ if (_hb_glyph_info_get_general_category (&info) == HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)
+ cat = OT_N;
+ }
+
+
+
+ /*
+ * Re-assign position.
+ */
+
+ if ((FLAG (cat) & CONSONANT_FLAGS))
+ {
+ pos = consonant_position (u);
+ if (is_ra (u))
+ cat = OT_Ra;
+ }
+ else if (cat == OT_M)
+ {
+ pos = matra_position (u, pos);
+ }
+ else if (cat == OT_SM || cat == OT_VD)
+ {
+ pos = POS_SMVD;
+ }
+
+ if (unlikely (u == 0x0B01)) pos = POS_BEFORE_SUB; /* Oriya Bindu is BeforeSub in the spec. */
+
+
+
+ info.indic_category() = cat;
+ info.indic_position() = pos;
+}
+
+/*
+ * Things above this line should ideally be moved to the Indic table itself.
+ */
+
/*
* Global Indic shaper options.
/* buffer var allocations */
#define myanmar_category() complex_var_u8_0() /* myanmar_category_t */
-#define myanmar_position() complex_var_u8_1() /* myanmar_matra_category_t */
+#define myanmar_position() complex_var_u8_1() /* myanmar_position_t */
/*
HB_COMPLEX_SHAPER_IMPLEMENT (arabic) \
HB_COMPLEX_SHAPER_IMPLEMENT (indic) \
HB_COMPLEX_SHAPER_IMPLEMENT (myanmar) \
+ HB_COMPLEX_SHAPER_IMPLEMENT (sea) \
HB_COMPLEX_SHAPER_IMPLEMENT (thai) \
/* ^--- Add new shapers here */
/* Unicode-4.1 additions */
case HB_SCRIPT_BUGINESE:
- case HB_SCRIPT_NEW_TAI_LUE:
/* Unicode-5.0 additions */
case HB_SCRIPT_BALINESE:
/* Unicode-5.1 additions */
- case HB_SCRIPT_CHAM:
case HB_SCRIPT_LEPCHA:
case HB_SCRIPT_REJANG:
case HB_SCRIPT_SUNDANESE:
case HB_SCRIPT_JAVANESE:
case HB_SCRIPT_KAITHI:
case HB_SCRIPT_MEETEI_MAYEK:
- case HB_SCRIPT_TAI_THAM:
+ /* Unicode-6.0 additions */
/* Unicode-6.1 additions */
case HB_SCRIPT_CHAKMA:
/* If the designer designed the font for the 'DFLT' script,
* use the default shaper. Otherwise, use the Indic shaper.
- * Note that for some scripts, like New Tai Lue, there may
- * not be *any* GSUB/GPOS needed, so there may be no scripts
- * found! */
+ * Note that for some simple scripts, there may not be *any*
+ * GSUB/GPOS needed, so there may be no scripts found! */
if (planner->map.chosen_script[0] == HB_TAG ('D','F','L','T'))
return &_hb_ot_complex_shaper_default;
else
return &_hb_ot_complex_shaper_myanmar;
else
return &_hb_ot_complex_shaper_default;
+
+ /* Unicode-4.1 additions */
+ case HB_SCRIPT_NEW_TAI_LUE:
+
+ /* Unicode-5.1 additions */
+ case HB_SCRIPT_CHAM:
+
+ /* Unicode-5.2 additions */
+ case HB_SCRIPT_TAI_THAM:
+
+ /* If the designer designed the font for the 'DFLT' script,
+ * use the default shaper. Otherwise, use the Indic shaper.
+ * Note that for some simple scripts, there may not be *any*
+ * GSUB/GPOS needed, so there may be no scripts found! */
+ if (planner->map.chosen_script[0] == HB_TAG ('D','F','L','T'))
+ return &_hb_ot_complex_shaper_default;
+ else
+ return &_hb_ot_complex_shaper_sea;
}
}
--- /dev/null
+/*
+ * Copyright © 2011,2012,2013 Google, Inc.
+ *
+ * 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
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_OT_SHAPE_COMPLEX_SEA_MACHINE_HH
+#define HB_OT_SHAPE_COMPLEX_SEA_MACHINE_HH
+
+#include "hb-private.hh"
+
+%%{
+ machine sea_syllable_machine;
+ alphtype unsigned char;
+ write data;
+}%%
+
+%%{
+
+# Same order as enum sea_category_t. Not sure how to avoid duplication.
+C = 1;
+GB = 12; # Generic Base
+H = 4; # Halant
+IV = 2; # Independent Vowel
+MR = 22; # Medial Ra
+CM = 17; # Consonant Medial
+VAbv = 26;
+VBlw = 27;
+VPre = 28;
+VPst = 29;
+T = 3; # Tone Marks
+A = 10; # Anusvara
+
+syllable_tail = (VPre|VAbv|VBlw|VPst|H.C|CM|MR|T|A)*;
+
+consonant_syllable = (C|IV|GB) syllable_tail;
+broken_cluster = syllable_tail;
+other = any;
+
+main := |*
+ consonant_syllable => { found_syllable (consonant_syllable); };
+ broken_cluster => { found_syllable (broken_cluster); };
+ other => { found_syllable (non_sea_cluster); };
+*|;
+
+
+}%%
+
+#define found_syllable(syllable_type) \
+ HB_STMT_START { \
+ if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \
+ for (unsigned int i = last; i < p+1; i++) \
+ info[i].syllable() = (syllable_serial << 4) | syllable_type; \
+ last = p+1; \
+ syllable_serial++; \
+ if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
+ } HB_STMT_END
+
+static void
+find_syllables (hb_buffer_t *buffer)
+{
+ unsigned int p, pe, eof, ts HB_UNUSED, te, act;
+ int cs;
+ hb_glyph_info_t *info = buffer->info;
+ %%{
+ write init;
+ getkey info[p].sea_category();
+ }%%
+
+ p = 0;
+ pe = eof = buffer->len;
+
+ unsigned int last = 0;
+ unsigned int syllable_serial = 1;
+ %%{
+ write exec;
+ }%%
+}
+
+#undef found_syllable
+
+#endif /* HB_OT_SHAPE_COMPLEX_SEA_MACHINE_HH */
--- /dev/null
+/*
+ * Copyright © 2011,2012,2013 Google, Inc.
+ *
+ * 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
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#include "hb-ot-shape-complex-indic-private.hh"
+
+/* buffer var allocations */
+#define sea_category() complex_var_u8_0() /* indic_category_t */
+#define sea_position() complex_var_u8_1() /* indic_position_t */
+
+
+/*
+ * South-East Asian shaper.
+ * Loosely based on the Myanmar spec / shaper.
+ * There is no OpenType spec for this.
+ */
+
+static const hb_tag_t
+sea_features[] =
+{
+ /*
+ * Basic features.
+ * These features are applied in order, one at a time, after initial_reordering.
+ */
+ HB_TAG('p','r','e','f'),
+ HB_TAG('a','b','v','f'),
+ HB_TAG('b','l','w','f'),
+ HB_TAG('p','s','t','f'),
+ /*
+ * Other features.
+ * These features are applied all at once, after final_reordering.
+ */
+ HB_TAG('p','r','e','s'),
+ HB_TAG('a','b','v','s'),
+ HB_TAG('b','l','w','s'),
+ HB_TAG('p','s','t','s'),
+ /* Positioning features, though we don't care about the types. */
+ HB_TAG('d','i','s','t'),
+};
+
+/*
+ * Must be in the same order as the sea_features array.
+ */
+enum {
+ _PREF,
+ _ABVF,
+ _BLWF,
+ _PSTF,
+
+ _PRES,
+ _ABVS,
+ _BLWS,
+ _PSTS,
+ _DIST,
+
+ SEA_NUM_FEATURES,
+ SEA_BASIC_FEATURES = _PRES /* Don't forget to update this! */
+};
+
+static void
+setup_syllables (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer);
+static void
+initial_reordering (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer);
+static void
+final_reordering (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer);
+
+static void
+collect_features_sea (hb_ot_shape_planner_t *plan)
+{
+ hb_ot_map_builder_t *map = &plan->map;
+
+ /* Do this before any lookups have been applied. */
+ map->add_gsub_pause (setup_syllables);
+
+ map->add_bool_feature (HB_TAG('l','o','c','l'));
+ /* The Indic specs do not require ccmp, but we apply it here since if
+ * there is a use of it, it's typically at the beginning. */
+ map->add_bool_feature (HB_TAG('c','c','m','p'));
+
+
+ unsigned int i = 0;
+ map->add_gsub_pause (initial_reordering);
+ for (; i < SEA_BASIC_FEATURES; i++) {
+ map->add_bool_feature (sea_features[i]);
+ map->add_gsub_pause (NULL);
+ }
+ map->add_gsub_pause (final_reordering);
+ for (; i < SEA_NUM_FEATURES; i++) {
+ map->add_bool_feature (sea_features[i]);
+ }
+}
+
+static void
+override_features_sea (hb_ot_shape_planner_t *plan)
+{
+ plan->map.add_feature (HB_TAG('l','i','g','a'), 0, true);
+}
+
+
+enum syllable_type_t {
+ consonant_syllable,
+ broken_cluster,
+ non_sea_cluster,
+};
+
+#include "hb-ot-shape-complex-sea-machine.hh"
+
+
+/* Note: This enum is duplicated in the -machine.rl source file.
+ * Not sure how to avoid duplication. */
+enum sea_category_t {
+// OT_C = 1,
+ OT_GB = 12, /* Generic Base XXX DOTTED CIRCLE only for now */
+// OT_H = 4, /* Halant */
+ OT_IV = 2, /* Independent Vowel */
+ OT_MR = 22, /* Medial Ra */
+// OT_CM = 17, /* Consonant Medial */
+ OT_VAbv = 26,
+ OT_VBlw = 27,
+ OT_VPre = 28,
+ OT_VPst = 29,
+ OT_T = 3, /* Tone Marks */
+// OT_A = 10, /* Anusvara */
+};
+
+static inline void
+set_sea_properties (hb_glyph_info_t &info)
+{
+ hb_codepoint_t u = info.codepoint;
+ unsigned int type = hb_indic_get_categories (u);
+ indic_category_t cat = (indic_category_t) (type & 0x7F);
+ indic_position_t pos = (indic_position_t) (type >> 8);
+
+ /* Medial Ra */
+ if (u == 0x1A55 || u == 0xAA34)
+ cat = (indic_category_t) OT_MR;
+
+ if (cat == OT_M)
+ {
+ switch ((int) pos)
+ {
+ case POS_PRE_C: cat = (indic_category_t) OT_VPre; break;
+ case POS_ABOVE_C: cat = (indic_category_t) OT_VAbv; break;
+ case POS_BELOW_C: cat = (indic_category_t) OT_VBlw; break;
+ case POS_POST_C: cat = (indic_category_t) OT_VPst; break;
+ }
+ }
+
+ info.sea_category() = (sea_category_t) cat;
+ info.sea_position() = pos;
+}
+
+
+static void
+setup_masks_sea (const hb_ot_shape_plan_t *plan HB_UNUSED,
+ hb_buffer_t *buffer,
+ hb_font_t *font HB_UNUSED)
+{
+ HB_BUFFER_ALLOCATE_VAR (buffer, sea_category);
+ HB_BUFFER_ALLOCATE_VAR (buffer, sea_position);
+
+ /* We cannot setup masks here. We save information about characters
+ * and setup masks later on in a pause-callback. */
+
+ unsigned int count = buffer->len;
+ for (unsigned int i = 0; i < count; i++)
+ set_sea_properties (buffer->info[i]);
+}
+
+static void
+setup_syllables (const hb_ot_shape_plan_t *plan HB_UNUSED,
+ hb_font_t *font HB_UNUSED,
+ hb_buffer_t *buffer)
+{
+ find_syllables (buffer);
+}
+
+static int
+compare_sea_order (const hb_glyph_info_t *pa, const hb_glyph_info_t *pb)
+{
+ int a = pa->sea_position();
+ int b = pb->sea_position();
+
+ return a < b ? -1 : a == b ? 0 : +1;
+}
+
+
+static void
+initial_reordering_consonant_syllable (const hb_ot_shape_plan_t *plan,
+ hb_face_t *face,
+ hb_buffer_t *buffer,
+ unsigned int start, unsigned int end)
+{
+ hb_glyph_info_t *info = buffer->info;
+ unsigned int base = start;
+
+ /* Reorder! */
+ unsigned int i = start;
+ for (; i < base; i++)
+ info[i].sea_position() = POS_PRE_C;
+ if (i < end)
+ {
+ info[i].sea_position() = POS_BASE_C;
+ i++;
+ }
+ for (; i < end; i++)
+ {
+ if (info[i].sea_category() == OT_MR) /* Pre-base reordering */
+ {
+ info[i].sea_position() = POS_PRE_C;
+ continue;
+ }
+ if (info[i].sea_position() < POS_BASE_C) /* Left matra */
+ {
+ continue;
+ }
+
+ info[i].sea_position() = POS_AFTER_MAIN;
+ }
+
+ buffer->merge_clusters (start, end);
+ /* Sit tight, rock 'n roll! */
+ hb_bubble_sort (info + start, end - start, compare_sea_order);
+}
+
+static void
+initial_reordering_broken_cluster (const hb_ot_shape_plan_t *plan,
+ hb_face_t *face,
+ hb_buffer_t *buffer,
+ unsigned int start, unsigned int end)
+{
+ /* We already inserted dotted-circles, so just call the consonant_syllable. */
+ initial_reordering_consonant_syllable (plan, face, buffer, start, end);
+}
+
+static void
+initial_reordering_non_sea_cluster (const hb_ot_shape_plan_t *plan HB_UNUSED,
+ hb_face_t *face HB_UNUSED,
+ hb_buffer_t *buffer HB_UNUSED,
+ unsigned int start HB_UNUSED, unsigned int end HB_UNUSED)
+{
+ /* Nothing to do right now. If we ever switch to using the output
+ * buffer in the reordering process, we'd need to next_glyph() here. */
+}
+
+
+static void
+initial_reordering_syllable (const hb_ot_shape_plan_t *plan,
+ hb_face_t *face,
+ hb_buffer_t *buffer,
+ unsigned int start, unsigned int end)
+{
+ syllable_type_t syllable_type = (syllable_type_t) (buffer->info[start].syllable() & 0x0F);
+ switch (syllable_type) {
+ case consonant_syllable: initial_reordering_consonant_syllable (plan, face, buffer, start, end); return;
+ case broken_cluster: initial_reordering_broken_cluster (plan, face, buffer, start, end); return;
+ case non_sea_cluster: initial_reordering_non_sea_cluster (plan, face, buffer, start, end); return;
+ }
+}
+
+static inline void
+insert_dotted_circles (const hb_ot_shape_plan_t *plan HB_UNUSED,
+ hb_font_t *font,
+ hb_buffer_t *buffer)
+{
+ /* Note: This loop is extra overhead, but should not be measurable. */
+ bool has_broken_syllables = false;
+ unsigned int count = buffer->len;
+ for (unsigned int i = 0; i < count; i++)
+ if ((buffer->info[i].syllable() & 0x0F) == broken_cluster) {
+ has_broken_syllables = true;
+ break;
+ }
+ if (likely (!has_broken_syllables))
+ return;
+
+
+ hb_codepoint_t dottedcircle_glyph;
+ if (!font->get_glyph (0x25CC, 0, &dottedcircle_glyph))
+ return;
+
+ hb_glyph_info_t dottedcircle = {0};
+ dottedcircle.codepoint = 0x25CC;
+ set_sea_properties (dottedcircle);
+ dottedcircle.codepoint = dottedcircle_glyph;
+
+ buffer->clear_output ();
+
+ buffer->idx = 0;
+ unsigned int last_syllable = 0;
+ while (buffer->idx < buffer->len)
+ {
+ unsigned int syllable = buffer->cur().syllable();
+ syllable_type_t syllable_type = (syllable_type_t) (syllable & 0x0F);
+ if (unlikely (last_syllable != syllable && syllable_type == broken_cluster))
+ {
+ last_syllable = syllable;
+
+ hb_glyph_info_t info = dottedcircle;
+ info.cluster = buffer->cur().cluster;
+ info.mask = buffer->cur().mask;
+ info.syllable() = buffer->cur().syllable();
+
+ buffer->output_info (info);
+ }
+ else
+ buffer->next_glyph ();
+ }
+
+ buffer->swap_buffers ();
+}
+
+static void
+initial_reordering (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font,
+ hb_buffer_t *buffer)
+{
+ insert_dotted_circles (plan, font, buffer);
+
+ hb_glyph_info_t *info = buffer->info;
+ unsigned int count = buffer->len;
+ if (unlikely (!count)) return;
+ unsigned int last = 0;
+ unsigned int last_syllable = info[0].syllable();
+ for (unsigned int i = 1; i < count; i++)
+ if (last_syllable != info[i].syllable()) {
+ initial_reordering_syllable (plan, font->face, buffer, last, i);
+ last = i;
+ last_syllable = info[last].syllable();
+ }
+ initial_reordering_syllable (plan, font->face, buffer, last, count);
+}
+
+static void
+final_reordering (const hb_ot_shape_plan_t *plan,
+ hb_font_t *font HB_UNUSED,
+ hb_buffer_t *buffer)
+{
+ hb_glyph_info_t *info = buffer->info;
+ unsigned int count = buffer->len;
+
+ /* Zero syllables now... */
+ for (unsigned int i = 0; i < count; i++)
+ info[i].syllable() = 0;
+
+ HB_BUFFER_DEALLOCATE_VAR (buffer, sea_category);
+ HB_BUFFER_DEALLOCATE_VAR (buffer, sea_position);
+}
+
+
+static hb_ot_shape_normalization_mode_t
+normalization_preference_sea (const hb_segment_properties_t *props HB_UNUSED)
+{
+ return HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT;
+}
+
+
+const hb_ot_complex_shaper_t _hb_ot_complex_shaper_sea =
+{
+ "sea",
+ collect_features_sea,
+ override_features_sea,
+ NULL, /* data_create */
+ NULL, /* data_destroy */
+ NULL, /* preprocess_text */
+ normalization_preference_sea,
+ NULL, /* decompose */
+ NULL, /* compose */
+ setup_masks_sea,
+ HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF,
+ false, /* fallback_position */
+};
shaper-hangul
shaper-indic
shaper-myanmar
+shaper-sea
shaper-thai
script-khmer
-script-new-tai-lue
--- /dev/null
+script-myanmar
--- /dev/null
+script-cham
+script-new-tai-lue
+script-tai-tham
--- /dev/null
+ᨠ᩠ᨠᩮᩕ
+ᩋᩫᨶ᩠ᨲᩕᩣ᩠ᨿ
projects / platform / upstream / libHarfBuzzSharp.git / commitdiff