static void match_fonts(ASS_Library *lib, ASS_FontProvider *provider,
char *name)
{
const size_t attributes_n = 3;
CTFontDescriptorRef ctdescrs[attributes_n];
CFMutableDictionaryRef cfattrs[attributes_n];
CFStringRef attributes[attributes_n] = {
kCTFontFamilyNameAttribute,
kCTFontDisplayNameAttribute,
kCTFontNameAttribute,
};
CFStringRef cfname =
CFStringCreateWithCString(NULL, name, kCFStringEncodingUTF8);
for (int i = 0; i < attributes_n; i++) {
cfattrs[i] = CFDictionaryCreateMutable(NULL, 0, 0, 0);
CFDictionaryAddValue(cfattrs[i], attributes[i], cfname);
ctdescrs[i] = CTFontDescriptorCreateWithAttributes(cfattrs[i]);
}
CFArrayRef descriptors =
CFArrayCreate(NULL, (const void **)&ctdescrs, attributes_n, NULL);
CTFontCollectionRef ctcoll =
CTFontCollectionCreateWithFontDescriptors(descriptors, 0);
CFArrayRef fontsd =
CTFontCollectionCreateMatchingFontDescriptors(ctcoll);
process_descriptors(provider, fontsd);
SAFE_CFRelease(fontsd);
SAFE_CFRelease(ctcoll);
for (int i = 0; i < attributes_n; i++) {
SAFE_CFRelease(cfattrs[i]);
SAFE_CFRelease(ctdescrs[i]);
}
SAFE_CFRelease(descriptors);
SAFE_CFRelease(cfname);
}
static void
pango_core_text_family_list_faces (PangoFontFamily *family,
PangoFontFace ***faces,
int *n_faces)
{
PangoCoreTextFamily *ctfamily = PANGO_CORE_TEXT_FAMILY (family);
if (ctfamily->n_faces < 0)
{
GList *l;
GList *faces = NULL;
GList *synthetic_faces = NULL;
GHashTable *italic_faces;
const char *real_family = get_real_family (ctfamily->family_name);
CTFontCollectionRef collection;
CFArrayRef ctfaces;
CFArrayRef font_descriptors;
CFDictionaryRef attributes;
CFIndex i, count;
CFTypeRef keys[] = {
(CFTypeRef) kCTFontFamilyNameAttribute
};
CFStringRef values[] = {
CFStringCreateWithCString (kCFAllocatorDefault,
real_family,
kCFStringEncodingUTF8)
};
CTFontDescriptorRef descriptors[1];
attributes = CFDictionaryCreate (kCFAllocatorDefault,
(const void **)keys,
(const void **)values,
1,
&kCFTypeDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
descriptors[0] = CTFontDescriptorCreateWithAttributes (attributes);
font_descriptors = CFArrayCreate (kCFAllocatorDefault,
(const void **)descriptors,
1,
&kCFTypeArrayCallBacks);
collection = CTFontCollectionCreateWithFontDescriptors (font_descriptors,
NULL);
ctfaces = CTFontCollectionCreateMatchingFontDescriptors (collection);
italic_faces = g_hash_table_new (g_direct_hash, g_direct_equal);
count = CFArrayGetCount (ctfaces);
for (i = 0; i < count; i++)
{
PangoCoreTextFace *face;
CTFontDescriptorRef desc = CFArrayGetValueAtIndex (ctfaces, i);
face = pango_core_text_face_from_ct_font_descriptor (desc);
face->family = ctfamily;
faces = g_list_prepend (faces, face);
if (face->traits & kCTFontItalicTrait
|| pango_core_text_face_is_oblique (face))
g_hash_table_insert (italic_faces,
GINT_TO_POINTER ((gint)face->weight),
face);
}
CFRelease (font_descriptors);
CFRelease (attributes);
CFRelease (ctfaces);
/* For all fonts for which a non-synthetic italic variant does
* not exist on the system, we create synthesized versions here.
*/
for (l = faces; l; l = l->next)
{
PangoCoreTextFace *face = l->data;
if (!g_hash_table_lookup (italic_faces,
GINT_TO_POINTER ((gint)face->weight)))
{
PangoCoreTextFace *italic_face;
italic_face = g_object_new (PANGO_TYPE_CORE_TEXT_FACE, NULL);
italic_face->family = ctfamily;
italic_face->postscript_name = g_strdup (face->postscript_name);
italic_face->weight = face->weight;
italic_face->traits = face->traits | kCTFontItalicTrait;
italic_face->synthetic_italic = TRUE;
italic_face->coverage = pango_coverage_ref (face->coverage);
/* Try to create a sensible face name. */
if (strcasecmp (face->style_name, "regular") == 0)
italic_face->style_name = g_strdup ("Oblique");
else
italic_face->style_name = g_strdup_printf ("%s Oblique",
face->style_name);
synthetic_faces = g_list_prepend (synthetic_faces, italic_face);
}
}
faces = g_list_concat (faces, synthetic_faces);
ctfamily->n_faces = g_list_length (faces);
ctfamily->faces = g_new (PangoFontFace *, ctfamily->n_faces);
for (l = faces, i = 0; l; l = l->next, i++)
ctfamily->faces[i] = l->data;
g_list_free (faces);
g_hash_table_destroy (italic_faces);
}
