static cairo_status_t
cairo_truetype_font_write_cmap_table (cairo_truetype_font_t *font,
unsigned long tag)
{
unsigned int i;
cairo_truetype_font_write_be16 (font, 0); /* Table version */
cairo_truetype_font_write_be16 (font, 2); /* Num tables */
cairo_truetype_font_write_be16 (font, 3); /* Platform */
cairo_truetype_font_write_be16 (font, 0); /* Encoding */
cairo_truetype_font_write_be32 (font, 20); /* Offset to start of table */
cairo_truetype_font_write_be16 (font, 1); /* Platform */
cairo_truetype_font_write_be16 (font, 0); /* Encoding */
cairo_truetype_font_write_be32 (font, 52); /* Offset to start of table */
/* Output a format 4 encoding table. */
cairo_truetype_font_write_be16 (font, 4); /* Format */
cairo_truetype_font_write_be16 (font, 32); /* Length */
cairo_truetype_font_write_be16 (font, 0); /* Version */
cairo_truetype_font_write_be16 (font, 4); /* 2*segcount */
cairo_truetype_font_write_be16 (font, 4); /* searchrange */
cairo_truetype_font_write_be16 (font, 1); /* entry selector */
cairo_truetype_font_write_be16 (font, 0); /* rangeshift */
cairo_truetype_font_write_be16 (font, 0xf000 + font->base.num_glyphs - 1); /* end count[0] */
cairo_truetype_font_write_be16 (font, 0xffff); /* end count[1] */
cairo_truetype_font_write_be16 (font, 0); /* reserved */
cairo_truetype_font_write_be16 (font, 0xf000); /* startCode[0] */
cairo_truetype_font_write_be16 (font, 0xffff); /* startCode[1] */
cairo_truetype_font_write_be16 (font, 0x1000); /* delta[0] */
cairo_truetype_font_write_be16 (font, 1); /* delta[1] */
cairo_truetype_font_write_be16 (font, 0); /* rangeOffset[0] */
cairo_truetype_font_write_be16 (font, 0); /* rangeOffset[1] */
/* Output a format 6 encoding table. */
cairo_truetype_font_write_be16 (font, 6);
cairo_truetype_font_write_be16 (font, 10 + 2 * font->base.num_glyphs);
cairo_truetype_font_write_be16 (font, 0);
cairo_truetype_font_write_be16 (font, 0); /* First character */
cairo_truetype_font_write_be16 (font, font->base.num_glyphs);
for (i = 0; i < font->base.num_glyphs; i++)
cairo_truetype_font_write_be16 (font, i);
return font->status;
}
static cairo_status_t
cairo_truetype_font_write_loca_table (cairo_truetype_font_t *font,
unsigned long tag)
{
unsigned int i;
tt_head_t header;
unsigned long size;
cairo_status_t status;
if (font->status)
return font->status;
size = sizeof(tt_head_t);
status = font->backend->load_truetype_table (font->scaled_font_subset->scaled_font,
TT_TAG_head, 0,
(unsigned char*) &header, &size);
if (unlikely (status))
return _cairo_truetype_font_set_error (font, status);
if (be16_to_cpu (header.index_to_loc_format) == 0)
{
for (i = 0; i < font->base.num_glyphs + 1; i++)
cairo_truetype_font_write_be16 (font, font->glyphs[i].location / 2);
} else {
for (i = 0; i < font->base.num_glyphs + 1; i++)
cairo_truetype_font_write_be32 (font, font->glyphs[i].location);
}
return font->status;
}
static cairo_status_t
cairo_truetype_font_write_offset_table (cairo_truetype_font_t *font)
{
cairo_status_t status;
unsigned char *table_buffer;
size_t table_buffer_length;
unsigned short search_range, entry_selector, range_shift;
search_range = 1;
entry_selector = 0;
while (search_range * 2 <= font->num_tables) {
search_range *= 2;
entry_selector++;
}
search_range *= 16;
range_shift = font->num_tables * 16 - search_range;
cairo_truetype_font_write_be32 (font, SFNT_VERSION);
cairo_truetype_font_write_be16 (font, font->num_tables);
cairo_truetype_font_write_be16 (font, search_range);
cairo_truetype_font_write_be16 (font, entry_selector);
cairo_truetype_font_write_be16 (font, range_shift);
/* Allocate space for the table directory. Each directory entry
* will be filled in by cairo_truetype_font_update_entry() after
* the table is written. */
table_buffer_length = font->num_tables * 16;
status = cairo_truetype_font_allocate_write_buffer (font, table_buffer_length,
&table_buffer);
if (status)
return status;
return font->status;
}
static cairo_status_t
cairo_truetype_font_write_cmap_table (cairo_truetype_font_t *font,
unsigned long tag)
{
int i;
unsigned int j;
int range_offset;
int num_ranges;
int entry_selector;
int length;
num_ranges = ARRAY_LENGTH (winansi_unicode_ranges);
length = 16 + (num_ranges + 1)*8;
for (i = 0; i < num_ranges; i++)
length += (winansi_unicode_ranges[i].end - winansi_unicode_ranges[i].start + 1)*2;
entry_selector = 0;
while ((1 << entry_selector) <= (num_ranges + 1))
entry_selector++;
entry_selector--;
cairo_truetype_font_write_be16 (font, 0); /* Table version */
cairo_truetype_font_write_be16 (font, 1); /* Num tables */
cairo_truetype_font_write_be16 (font, 3); /* Platform */
cairo_truetype_font_write_be16 (font, 1); /* Encoding */
cairo_truetype_font_write_be32 (font, 12); /* Offset to start of table */
/* Output a format 4 encoding table for the winansi encoding */
cairo_truetype_font_write_be16 (font, 4); /* Format */
cairo_truetype_font_write_be16 (font, length); /* Length */
cairo_truetype_font_write_be16 (font, 0); /* Version */
cairo_truetype_font_write_be16 (font, num_ranges*2 + 2); /* 2*segcount */
cairo_truetype_font_write_be16 (font, (1 << (entry_selector + 1))); /* searchrange */
cairo_truetype_font_write_be16 (font, entry_selector); /* entry selector */
cairo_truetype_font_write_be16 (font, num_ranges*2 + 2 - (1 << (entry_selector + 1))); /* rangeshift */
for (i = 0; i < num_ranges; i++)
cairo_truetype_font_write_be16 (font, winansi_unicode_ranges[i].end); /* end count[] */
cairo_truetype_font_write_be16 (font, 0xffff); /* end count[] */
cairo_truetype_font_write_be16 (font, 0); /* reserved */
for (i = 0; i < num_ranges; i++)
cairo_truetype_font_write_be16 (font, winansi_unicode_ranges[i].start); /* startCode[] */
cairo_truetype_font_write_be16 (font, 0xffff); /* startCode[] */
for (i = 0; i < num_ranges; i++)
cairo_truetype_font_write_be16 (font, 0x0000); /* delta[] */
cairo_truetype_font_write_be16 (font, 1); /* delta[] */
range_offset = num_ranges*2 + 2;
for (i = 0; i < num_ranges; i++) {
cairo_truetype_font_write_be16 (font, range_offset); /* rangeOffset[] */
range_offset += (winansi_unicode_ranges[i].end - winansi_unicode_ranges[i].start + 1)*2 - 2;
}
cairo_truetype_font_write_be16 (font, 0); /* rangeOffset[] */
for (i = 0; i < num_ranges; i++) {
for (j = winansi_unicode_ranges[i].start; j < winansi_unicode_ranges[i].end + 1; j++) {
int ch = _cairo_unicode_to_winansi (j);
int glyph;
if (ch > 0)
glyph = font->scaled_font_subset->latin_to_subset_glyph_index[ch];
else
glyph = 0;
cairo_truetype_font_write_be16 (font, glyph);
}
}
return font->status;
}
