HB_BUFFER_DEALLOCATE_VAR (buffer, arabic_shaping_action);
}
+/* http://www.unicode.org/reports/tr53/tr53-1.pdf */
+
+static hb_codepoint_t
+modifier_combining_marks[] =
+{
+ 0x0654u, /* ARABIC HAMZA ABOVE */
+ 0x0655u, /* ARABIC HAMZA BELOW */
+ 0x0658u, /* ARABIC MARK NOON GHUNNA */
+ 0x06DCu, /* ARABIC SMALL HIGH SEEN */
+ 0x06E3u, /* ARABIC SMALL LOW SEEN */
+ 0x06E7u, /* ARABIC SMALL HIGH YEH */
+ 0x06E8u, /* ARABIC SMALL HIGH NOON */
+ 0x08F3u, /* ARABIC SMALL HIGH WAW */
+};
+
+static inline bool
+info_is_mcm (const hb_glyph_info_t &info)
+{
+ hb_codepoint_t u = info.codepoint;
+ for (unsigned int i = 0; i < ARRAY_LENGTH (modifier_combining_marks); i++)
+ if (u == modifier_combining_marks[i])
+ return true;
+ return false;
+}
+
+static void
+reorder_marks_arabic (const hb_ot_shape_plan_t *plan,
+ hb_buffer_t *buffer,
+ unsigned int start,
+ unsigned int end)
+{
+ hb_glyph_info_t *info = buffer->info;
+
+ unsigned int i = start;
+ for (unsigned int cc = 220; cc <= 230; cc += 10)
+ {
+ DEBUG_MSG (ARABIC, buffer, "Looking for %d's starting at %d\n", cc, i);
+ while (i < end && info_cc(info[i]) < cc)
+ i++;
+ DEBUG_MSG (ARABIC, buffer, "Looking for %d's stopped at %d\n", cc, i);
+
+ if (i == end)
+ break;
+
+ if (info_cc(info[i]) > cc)
+ continue;
+
+ /* Technically we should also check "info_cc(info[j]) == cc"
+ * in the following loop. But not doing it is safe; we might
+ * end up moving all the 220 MCMs and 230 MCMs together in one
+ * move and be done. */
+ unsigned int j = i;
+ while (j < end && info_is_mcm (info[j]))
+ j++;
+ DEBUG_MSG (ARABIC, buffer, "Found %d's from %d to %d\n", cc, i, j);
+
+ if (i == j)
+ continue;
+
+ /* Shift it! */
+ DEBUG_MSG (ARABIC, buffer, "Shifting %d's: %d %d\n", cc, i, j);
+ hb_glyph_info_t temp[HB_OT_SHAPE_COMPLEX_MAX_COMBINING_MARKS];
+ assert (j - i <= ARRAY_LENGTH (temp));
+ buffer->merge_out_clusters (start, j);
+ memmove (temp, &info[i], (j - i) * sizeof (hb_glyph_info_t));
+ memmove (&info[start + j - i], &info[start], (i - start) * sizeof (hb_glyph_info_t));
+ memmove (&info[start], temp, (j - i) * sizeof (hb_glyph_info_t));
+
+ start += j - i;
+
+ i = j;
+ }
+}
+
const hb_ot_complex_shaper_t _hb_ot_complex_shaper_arabic =
{
"arabic",
NULL, /* compose */
setup_masks_arabic,
NULL, /* disable_otl */
+ reorder_marks_arabic,
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
true, /* fallback_position */
};
NULL, /* compose */
NULL, /* setup_masks */
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
true, /* fallback_position */
};
NULL, /* compose */
setup_masks_hangul,
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
false, /* fallback_position */
};
compose_hebrew,
NULL, /* setup_masks */
disable_otl_hebrew,
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
true, /* fallback_position */
};
compose_indic,
setup_masks_indic,
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
false, /* fallback_position */
};
NULL, /* compose */
NULL, /* setup_masks */
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
true, /* fallback_position */
};
NULL, /* compose */
setup_masks_myanmar,
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY,
false, /* fallback_position */
};
#define complex_var_u8_1() var2.u8[3]
+#define HB_OT_SHAPE_COMPLEX_MAX_COMBINING_MARKS 32
+
enum hb_ot_shape_zero_width_marks_type_t {
HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY,
*/
bool (*disable_otl) (const hb_ot_shape_plan_t *plan);
+ /* reorder_marks()
+ * Called during shape().
+ * Shapers can use to modify ordering of combining marks.
+ * May be NULL.
+ */
+ void (*reorder_marks) (const hb_ot_shape_plan_t *plan,
+ hb_buffer_t *buffer,
+ unsigned int start,
+ unsigned int end);
+
hb_ot_shape_zero_width_marks_type_t zero_width_marks;
bool fallback_position;
NULL, /* compose */
NULL, /* setup_masks */
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
false,/* fallback_position */
};
NULL, /* compose */
NULL, /* setup_masks */
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
true, /* fallback_position */
};
compose_use,
setup_masks_use,
NULL, /* disable_otl */
+ NULL, /* reorder_marks */
HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY,
false, /* fallback_position */
};
if (_hb_glyph_info_get_modified_combining_class (&buffer->info[end]) == 0)
break;
- /* We are going to do a O(n^2). Only do this if the sequence is short. */
- if (end - i > 10) {
+ /* We are going to do a O(n^2). Only do this if the sequence is short,
+ * but not too short ;). */
+ if (end - i < 2 || end - i > HB_OT_SHAPE_COMPLEX_MAX_COMBINING_MARKS) {
i = end;
continue;
}
buffer->sort (i, end, compare_combining_class);
+ if (plan->shaper->reorder_marks)
+ plan->shaper->reorder_marks (plan, buffer, i, end);
+
i = end;
}
tests/arabic-fallback-shaping.tests \
tests/arabic-feature-order.tests \
tests/arabic-like-joining.tests \
+ tests/arabic-mark-order.tests \
tests/automatic-fractions.tests \
tests/cluster.tests \
tests/color-fonts.tests \
fi
cp "$fontfile" "$dir/font.ttf"
-pyftsubset \
+fonttools subset \
--glyph-names \
--no-hinting \
--layout-features='*' \
--- /dev/null
+fonts/sha1sum/94a5d6fb15a27521fba9ea4aee9cb39b2d03322a.ttf::U+064A,U+064E,U+0670,U+0653,U+0640,U+0654,U+064E,U+0627:[afii57415.zz04=7+481|afii57454=4@25,975+0|uni0654=4@-50,50+0|afii57440=4+650|uni0670_uni0653=0@75,400+0|afii57454=0@750,1125+0|afii57450.calt=0+1331]
+fonts/sha1sum/24b8d24d00ae86f49791b746da4c9d3f717a51a8.ttf::U+0628,U+0618,U+0619,U+064E,U+064F,U+0654,U+0658,U+0653,U+0654,U+0651,U+0656,U+0651,U+065C,U+0655,U+0650:[uni0653.small=0@266,2508+0|uni0654=0@308,2151+0|uni0655=0@518,-1544+0|uni065C=0@501,-1453+0|uni0656=0@573,-659+0|uni0650=0@500,133+0|uni0619=0@300,1807+0|uni0618=0@357,1674+0|uni0651064E=0@387,1178+0|uni0651=0@402,764+0|uni0658=0@424,404+0|uni0654064F=0@540,-435+0|uni0628=0+1352]
projects / platform / upstream / libHarfBuzzSharp.git / commitdiff