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[coretext] Add hb_coretext_face_create() 

Not tested.
This commit is contained in:
Behdad Esfahbod 2014-03-14 19:55:46 -07:00
parent c79865f90f
commit a9e25e90a4
2 changed files with 51 additions and 8 deletions
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55
src/hb-coretext.cc
View File

@ -37,6 +37,38 @@
#endif
static void
release_table_data (void *user_data)
{
CFDataRef cf_data = reinterpret_cast<CFDataRef> (user_data);
CFRelease(cf_data);
}
static hb_blob_t *
reference_table (hb_face_t *face HB_UNUSED, hb_tag_t tag, void *user_data)
{
CGFontRef cg_font = reinterpret_cast<CGFontRef> (user_data);
CFDataRef cf_data = CGFontCopyTableForTag (cg_font, tag);
if (unlikely (!cf_data))
return NULL;
const char *data = reinterpret_cast<const char*> (CFDataGetBytePtr (cf_data));
const size_t length = CFDataGetLength (cf_data);
if (!data || !length)
return NULL;
return hb_blob_create (data, length, HB_MEMORY_MODE_READONLY,
reinterpret_cast<void *> (const_cast<__CFData *> (cf_data)),
release_table_data);
}
hb_face_t *
hb_coretext_face_create (CGFontRef cg_font)
{
return hb_face_create_for_tables (reference_table, CGFontRetain (cg_font), (hb_destroy_func_t) CGFontRelease);
}
HB_SHAPER_DATA_ENSURE_DECLARE(coretext, face)
HB_SHAPER_DATA_ENSURE_DECLARE(coretext, font)
@ -65,15 +97,22 @@ _hb_coretext_shaper_face_data_create (hb_face_t *face)
if (unlikely (!data))
return NULL;
hb_blob_t *blob = hb_face_reference_blob (face);
unsigned int blob_length;
const char *blob_data = hb_blob_get_data (blob, &blob_length);
if (unlikely (!blob_length))
DEBUG_MSG (CORETEXT, face, "Face has empty blob");
if (face->destroy == (hb_destroy_func_t) CGFontRelease)
{
data->cg_font = CGFontRetain ((CGFontRef) face->user_data);
}
else
{
hb_blob_t *blob = hb_face_reference_blob (face);
unsigned int blob_length;
const char *blob_data = hb_blob_get_data (blob, &blob_length);
if (unlikely (!blob_length))
DEBUG_MSG (CORETEXT, face, "Face has empty blob");
CGDataProviderRef provider = CGDataProviderCreateWithData (blob, blob_data, blob_length, &release_data);
data->cg_font = CGFontCreateWithDataProvider (provider);
CGDataProviderRelease (provider);
CGDataProviderRef provider = CGDataProviderCreateWithData (blob, blob_data, blob_length, &release_data);
data->cg_font = CGFontCreateWithDataProvider (provider);
CGDataProviderRelease (provider);
}
if (unlikely (!data->cg_font)) {
DEBUG_MSG (CORETEXT, face, "Face CGFontCreateWithDataProvider() failed");

4
src/hb-coretext.h
View File

@ -38,6 +38,10 @@ HB_BEGIN_DECLS
#define HB_CORETEXT_TAG_MORX HB_TAG('m','o','r','x')
hb_face_t *
hb_coretext_face_create (CGFontRef cg_font);
CGFontRef
hb_coretext_face_get_cg_font (hb_face_t *face);