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This commit is contained in:
Behdad Esfahbod 2010-05-17 15:14:14 -04:00
parent 73af7756dc
commit f415755fdf
1 changed files with 26 additions and 24 deletions
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50
src/hb-ot-layout.cc
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@ -601,45 +601,47 @@ hb_ot_layout_position_finish (hb_font_t *font HB_UNUSED,
{
unsigned int i, j;
unsigned int len = hb_buffer_get_length (buffer);
hb_internal_glyph_position_t *positions = (hb_internal_glyph_position_t *) hb_buffer_get_glyph_positions (buffer);
hb_internal_glyph_position_t *pos = (hb_internal_glyph_position_t *) hb_buffer_get_glyph_positions (buffer);
/* TODO: Vertical */
/* Handle cursive connections */
/* First handle all left-to-right connections */
for (j = 0; j < len; j++) {
if (positions[j].cursive_chain > 0) {
positions[j].y_offset += positions[j - positions[j].cursive_chain].y_offset;
positions[j].cursive_chain = 0;
if (pos[j].cursive_chain > 0)
{
pos[j].y_offset += pos[j - pos[j].cursive_chain].y_offset;
pos[j].cursive_chain = 0;
}
}
/* Then handle all right-to-left connections */
for (i = len; i > 0; i--) {
j = i - 1;
if (positions[j].cursive_chain < 0) {
positions[j].y_offset += positions[j - positions[j].cursive_chain].y_offset;
positions[j].cursive_chain = 0;
if (pos[j].cursive_chain < 0)
{
pos[j].y_offset += pos[j - pos[j].cursive_chain].y_offset;
pos[j].cursive_chain = 0;
}
}
/* Handle attachments */
for (i = 0; i < len; i++)
if (positions[i].back)
{
unsigned int back = i - positions[i].back;
positions[i].back = 0;
positions[i].x_offset += positions[back].x_offset;
positions[i].y_offset += positions[back].y_offset;
if (pos[i].back)
{
unsigned int back = i - pos[i].back;
pos[i].back = 0;
pos[i].x_offset += pos[back].x_offset;
pos[i].y_offset += pos[back].y_offset;
if (buffer->direction == HB_DIRECTION_RTL)
for (j = back + 1; j < i + 1; j++) {
positions[i].x_offset += positions[j].x_advance;
positions[i].y_offset += positions[j].y_advance;
}
else
for (j = back; j < i; j++) {
positions[i].x_offset -= positions[j].x_advance;
positions[i].y_offset -= positions[j].y_advance;
}
}
if (buffer->direction == HB_DIRECTION_RTL)
for (j = back + 1; j < i + 1; j++) {
pos[i].x_offset += pos[j].x_advance;
pos[i].y_offset += pos[j].y_advance;
}
else
for (j = back; j < i; j++) {
pos[i].x_offset -= pos[j].x_advance;
pos[i].y_offset -= pos[j].y_advance;
}
}
}