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[API] Add hb_face_make/is_immutable()

This commit is contained in:
Behdad Esfahbod 2011-05-12 17:48:20 -04:00
parent 20c8b908dd
commit 7fc5a30cb4
5 changed files with 29 additions and 1 deletions
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2
src/hb-font-private.hh
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@ -81,6 +81,8 @@ struct _hb_font_funcs_t {
struct _hb_face_t {
hb_object_header_t header;
hb_bool_t immutable;
hb_get_table_func_t get_table;
void *user_data;
hb_destroy_func_t destroy;

18
src/hb-font.cc
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@ -320,6 +320,8 @@ hb_font_get_kerning (hb_font_t *font,
static hb_face_t _hb_face_nil = {
HB_OBJECT_HEADER_STATIC,
TRUE, /* immutable */
NULL, /* get_table */
NULL, /* user_data */
NULL, /* destroy */
@ -456,6 +458,21 @@ hb_face_get_user_data (hb_face_t *face,
return hb_object_get_user_data (face, key);
}
void
hb_face_make_immutable (hb_face_t *face)
{
if (hb_object_is_inert (face))
return;
face->immutable = true;
}
hb_bool_t
hb_face_is_immutable (hb_face_t *face)
{
return face->immutable;
}
hb_blob_t *
hb_face_reference_table (hb_face_t *face,
@ -515,6 +532,7 @@ hb_font_create (hb_face_t *face)
if (!(font = hb_object_create<hb_font_t> ()))
return &_hb_font_nil;
hb_face_make_immutable (face);
font->face = hb_face_reference (face);
font->klass = &_hb_font_funcs_nil;

6
src/hb-font.h
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@ -72,6 +72,12 @@ void *
hb_face_get_user_data (hb_face_t *face,
hb_user_data_key_t *key);
void
hb_face_make_immutable (hb_face_t *face);
hb_bool_t
hb_face_is_immutable (hb_face_t *face);
hb_blob_t *
hb_face_reference_table (hb_face_t *face,

2
test/test-font.c
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@ -156,7 +156,9 @@ _test_fontfuncs_nil (hb_font_funcs_t *ffuncs)
blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL);
face = hb_face_create (blob, 0);
hb_blob_destroy (blob);
g_assert (!hb_face_is_immutable (face));
font = hb_font_create (face);
g_assert (hb_face_is_immutable (face));
hb_face_destroy (face);

2
test/test-object.c
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@ -163,8 +163,8 @@ typedef struct {
static const object_t objects[] =
{
OBJECT_WITHOUT_IMMUTABILITY (buffer),
OBJECT_WITHOUT_IMMUTABILITY (face),
OBJECT_WITH_IMMUTABILITY (blob),
OBJECT_WITH_IMMUTABILITY (face),
OBJECT_WITH_IMMUTABILITY (font),
OBJECT_WITH_IMMUTABILITY (font_funcs),
OBJECT_WITH_IMMUTABILITY (unicode_funcs)