fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-05-05 04:08:13 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add win32 font backend functions for Type 1 subsetting

Browse source 
Native Type 1 font subsetting now works on Windows.
This commit is contained in:
Adrian Johnson 2011-07-18 22:31:34 +09:30
parent 068df654da
commit bf5892e2a6
1 changed files with 65 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

66
src/cairo-win32-font.c
View file

@ -132,6 +132,8 @@ typedef struct {
cairo_bool_t is_bitmap;
cairo_bool_t is_type1;
cairo_bool_t delete_scaled_hfont;
cairo_bool_t has_type1_notdef_index;
unsigned long type1_notdef_index;
} cairo_win32_scaled_font_t;
static cairo_status_t
@ -355,6 +357,7 @@ _win32_scaled_font_create (LOGFONTW *logfont,
f->em_square = 0;
f->scaled_hfont = NULL;
f->unscaled_hfont = NULL;
f->has_type1_notdef_index = FALSE;
if (f->quality == logfont->lfQuality ||
(logfont->lfQuality == DEFAULT_QUALITY &&
@ -1656,6 +1659,65 @@ _cairo_win32_scaled_font_is_synthetic (void *abstract_font)
return FALSE;
}
static cairo_int_status_t
_cairo_win32_scaled_font_index_to_glyph_name (void *abstract_font,
char **glyph_names,
int num_glyph_names,
unsigned long glyph_index,
unsigned long *glyph_array_index)
{
cairo_win32_scaled_font_t *scaled_font = abstract_font;
int i;
/* Windows puts .notdef at index 0 then numbers the remaining
* glyphs starting from 1 in the order they appear in the font. */
/* Find the position of .notdef in the list of glyph names. We
* only need to do this once per scaled font. */
if (! scaled_font->has_type1_notdef_index) {
for (i = 0; i < num_glyph_names; i++) {
if (strcmp (glyph_names[i], ".notdef") == 0) {
scaled_font->type1_notdef_index = i;
scaled_font->has_type1_notdef_index = TRUE;
break;
}
}
if (! scaled_font->has_type1_notdef_index)
return CAIRO_INT_STATUS_UNSUPPORTED;
}
/* Once we know the position of .notdef the position of any glyph
* in the font can easily be obtained. */
if (glyph_index == 0)
*glyph_array_index = scaled_font->type1_notdef_index;
else if (glyph_index <= scaled_font->type1_notdef_index)
*glyph_array_index = glyph_index - 1;
else
*glyph_array_index = glyph_index;
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_win32_scaled_font_load_type1_data (void *abstract_font,
long offset,
unsigned char *buffer,
unsigned long *length)
{
cairo_win32_scaled_font_t *scaled_font = abstract_font;
if (! scaled_font->is_type1)
return CAIRO_INT_STATUS_UNSUPPORTED;
/* Using the tag 0 retrieves the entire font file. This works with
* Type 1 fonts as well as TTF/OTF fonts. */
return _cairo_win32_scaled_font_load_truetype_table (scaled_font,
0,
offset,
buffer,
length);
}
static cairo_status_t
_cairo_win32_scaled_font_init_glyph_surface (cairo_win32_scaled_font_t *scaled_font,
cairo_scaled_glyph_t *scaled_glyph)
@ -1904,7 +1966,9 @@ const cairo_scaled_font_backend_t _cairo_win32_scaled_font_backend = {
_cairo_win32_scaled_font_show_glyphs,
_cairo_win32_scaled_font_load_truetype_table,
_cairo_win32_scaled_font_index_to_ucs4,
_cairo_win32_scaled_font_is_synthetic
_cairo_win32_scaled_font_is_synthetic,
_cairo_win32_scaled_font_index_to_glyph_name,
_cairo_win32_scaled_font_load_type1_data
};
/* #cairo_win32_font_face_t */