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[Indic] Move consonant-position-setting into initial_reordering()

This commit is contained in:
Behdad Esfahbod 2012-08-02 08:42:11 -04:00
parent afbcc24be0
commit 24eacf17c8
1 changed files with 35 additions and 30 deletions
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65
src/hb-ot-shape-complex-indic.cc
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@ -236,6 +236,34 @@ override_features_indic (const hb_ot_complex_shaper_t *shaper,
}
static void
setup_masks_indic (const hb_ot_complex_shaper_t *shaper,
const hb_ot_map_t *map,
hb_buffer_t *buffer,
hb_font_t *font HB_UNUSED)
{
HB_BUFFER_ALLOCATE_VAR (buffer, indic_category);
HB_BUFFER_ALLOCATE_VAR (buffer, indic_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_indic_properties (buffer->info[i]);
}
static int
compare_indic_order (const hb_glyph_info_t *pa, const hb_glyph_info_t *pb)
{
int a = pa->indic_position();
int b = pb->indic_position();
return a < b ? -1 : a == b ? 0 : +1;
}
static void
update_consonant_positions (const hb_ot_map_t *map,
hb_buffer_t *buffer,
@ -254,7 +282,7 @@ update_consonant_positions (const hb_ot_map_t *map,
case HB_SCRIPT_MALAYALAM: virama = 0x0D4D; break;
case HB_SCRIPT_SINHALA: virama = 0x0DCA; break;
case HB_SCRIPT_KHMER: virama = 0x17D2; break;
default: virama = 0; break;
default: virama = 0; break;
}
indic_shape_plan_t indic_plan (map);
@ -263,43 +291,18 @@ update_consonant_positions (const hb_ot_map_t *map,
hb_codepoint_t glyphs[2];
if (virama && font->get_glyph (virama, 0, &glyphs[1 - consonant_pos]))
{
/* Technically speaking, the spec says we should apply 'locl' to virama too.
* Maybe one day... */
hb_face_t *face = font->face;
unsigned int count = buffer->len;
for (unsigned int i = 0; i < count; i++)
if (buffer->info[i].indic_position() == POS_BASE_C) {
font->get_glyph (buffer->info[i].codepoint, 0, &glyphs[consonant_pos]);
glyphs[consonant_pos] = buffer->info[i].codepoint;
buffer->info[i].indic_position() = consonant_position_from_font (&indic_plan, glyphs, 2, face);
}
}
}
static void
setup_masks_indic (const hb_ot_complex_shaper_t *shaper,
const hb_ot_map_t *map,
hb_buffer_t *buffer,
hb_font_t *font)
{
HB_BUFFER_ALLOCATE_VAR (buffer, indic_category);
HB_BUFFER_ALLOCATE_VAR (buffer, indic_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_indic_properties (buffer->info[i]);
update_consonant_positions (map, buffer, font);
}
static int
compare_indic_order (const hb_glyph_info_t *pa, const hb_glyph_info_t *pb)
{
int a = pa->indic_position();
int b = pb->indic_position();
return a < b ? -1 : a == b ? 0 : +1;
}
/* Rules from:
* https://www.microsoft.com/typography/otfntdev/devanot/shaping.aspx */
@ -696,10 +699,12 @@ initial_reordering_non_indic (const hb_ot_map_t *map HB_UNUSED,
static void
initial_reordering (const hb_ot_map_t *map,
hb_font_t *font HB_UNUSED,
hb_font_t *font,
hb_buffer_t *buffer,
void *user_data HB_UNUSED)
{
update_consonant_positions (map, buffer, font);
hb_mask_t basic_mask_array[ARRAY_LENGTH (indic_basic_features)] = {0};
unsigned int num_masks = ARRAY_LENGTH (indic_basic_features);
for (unsigned int i = 0; i < num_masks; i++)