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Cleanup OpenTypeFontFile

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This commit is contained in:
Behdad Esfahbod 2010-04-23 13:32:03 -04:00
parent ae4190cafe
commit 1aa4666b91
2 changed files with 27 additions and 19 deletions
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44
src/hb-open-file-private.hh
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@ -104,8 +104,6 @@ typedef struct OffsetTable
return get_table (table_index); return get_table (table_index);
} }
inline unsigned int get_face_count (void) const { return 1; }
public: public:
inline bool sanitize (SANITIZE_ARG_DEF, void *base) { inline bool sanitize (SANITIZE_ARG_DEF, void *base) {
TRACE_SANITIZE (); TRACE_SANITIZE ();
@ -167,7 +165,7 @@ struct TTCHeader
switch (u.header.version) { switch (u.header.version) {
case 2: /* version 2 is compatible with version 1 */ case 2: /* version 2 is compatible with version 1 */
case 1: return u.version1->get_face (i); case 1: return u.version1->get_face (i);
default: return Null(OpenTypeFontFace); default:return Null(OpenTypeFontFace);
} }
} }
@ -199,43 +197,53 @@ struct TTCHeader
struct OpenTypeFontFile struct OpenTypeFontFile
{ {
static const hb_tag_t TrueTypeTag = HB_TAG ( 0 , 1 , 0 , 0 );
static const hb_tag_t CFFTag = HB_TAG ('O','T','T','O'); static const hb_tag_t CFFTag = HB_TAG ('O','T','T','O');
static const hb_tag_t TrueTypeTag = HB_TAG ( 0 , 1 , 0 , 0 );
static const hb_tag_t TTCTag = HB_TAG ('t','t','c','f'); static const hb_tag_t TTCTag = HB_TAG ('t','t','c','f');
STATIC_DEFINE_GET_FOR_DATA (OpenTypeFontFile); STATIC_DEFINE_GET_FOR_DATA (OpenTypeFontFile);
inline hb_tag_t get_tag (void) const { return u.tag; }
inline unsigned int get_face_count (void) const inline unsigned int get_face_count (void) const
{ {
switch (tag) { switch (u.tag) {
case TrueTypeTag: case CFFTag: return Cast<OpenTypeFontFace> (*this).get_face_count (); case CFFTag: /* All the non-collection tags */
case TTCTag: return Cast<TTCHeader> (*this).get_face_count (); case TrueTypeTag: return 1;
default: return 0; case TTCTag: return u.ttcHeader->get_face_count ();
default: return 0;
} }
} }
inline const OpenTypeFontFace& get_face (unsigned int i) const inline const OpenTypeFontFace& get_face (unsigned int i) const
{ {
switch (tag) { switch (u.tag) {
/* Note: for non-collection SFNT data we ignore index. This is because /* Note: for non-collection SFNT data we ignore index. This is because
* Apple dfont container is a container of SFNT's. So each SFNT is a * Apple dfont container is a container of SFNT's. So each SFNT is a
* non-TTC, but the index is more than zero. */ * non-TTC, but the index is more than zero. */
case TrueTypeTag: case CFFTag: return Cast<OpenTypeFontFace> (*this); case CFFTag: /* All the non-collection tags */
case TTCTag: return Cast<TTCHeader> (*this).get_face (i); case TrueTypeTag: return u.fontFace[0];
default: return Null(OpenTypeFontFace); case TTCTag: return u.ttcHeader->get_face (i);
default: return Null(OpenTypeFontFace);
} }
} }
inline bool sanitize (SANITIZE_ARG_DEF) { inline bool sanitize (SANITIZE_ARG_DEF) {
TRACE_SANITIZE (); TRACE_SANITIZE ();
if (!SANITIZE_SELF ()) return false; if (!SANITIZE (u.tag)) return false;
switch (tag) { switch (u.tag) {
default: return true; case CFFTag: /* All the non-collection tags */
case TrueTypeTag: case CFFTag: return SANITIZE_THIS (Cast<OpenTypeFontFace> (*this)); case TrueTypeTag: return u.fontFace->sanitize (SANITIZE_ARG, CharP(this));
case TTCTag: return SANITIZE (Cast<TTCHeader> (*this)); case TTCTag: return u.ttcHeader->sanitize (SANITIZE_ARG);
default: return true;
} }
} }
Tag tag; /* 4-byte identifier. */ private:
union {
Tag tag; /* 4-byte identifier. */
OpenTypeFontFace fontFace[VAR];
TTCHeader ttcHeader[VAR];
} u;
}; };
ASSERT_SIZE (OpenTypeFontFile, 4); ASSERT_SIZE (OpenTypeFontFile, 4);

2
src/main.cc
View File

@ -63,7 +63,7 @@ main (int argc, char **argv)
const OpenTypeFontFile &ot = OpenTypeFontFile::get_for_data (font_data); const OpenTypeFontFile &ot = OpenTypeFontFile::get_for_data (font_data);
switch (ot.tag) { switch (ot.get_tag ()) {
case OpenTypeFontFile::TrueTypeTag: case OpenTypeFontFile::TrueTypeTag:
printf ("OpenType font with TrueType outlines\n"); printf ("OpenType font with TrueType outlines\n");
break; break;