[ot] Move hb_ot_face_cmap_accelerator_t
This commit is contained in:
Behdad Esfahbod
parent
a7f15959b5
commit
977ddff1f1
@ -496,6 +496,146 @@ struct cmap
|
||||
{
|
||||
static const hb_tag_t tableTag = HB_OT_TAG_cmap;
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (c->check_struct (this) &&
|
||||
likely (version == 0) &&
|
||||
encodingRecord.sanitize (c, this));
|
||||
}
|
||||
|
||||
struct accelerator_t
|
||||
{
|
||||
inline void init (hb_face_t *face)
|
||||
{
|
||||
this->blob = OT::Sanitizer<OT::cmap>::sanitize (face->reference_table (HB_OT_TAG_cmap));
|
||||
const OT::cmap *cmap = OT::Sanitizer<OT::cmap>::lock_instance (this->blob);
|
||||
const OT::CmapSubtable *subtable = nullptr;
|
||||
const OT::CmapSubtableFormat14 *subtable_uvs = nullptr;
|
||||
|
||||
bool symbol = false;
|
||||
/* 32-bit subtables. */
|
||||
if (!subtable) subtable = cmap->find_subtable (3, 10);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 6);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 4);
|
||||
/* 16-bit subtables. */
|
||||
if (!subtable) subtable = cmap->find_subtable (3, 1);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 3);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 2);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 1);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 0);
|
||||
if (!subtable)
|
||||
{
|
||||
subtable = cmap->find_subtable (3, 0);
|
||||
if (subtable) symbol = true;
|
||||
}
|
||||
/* Meh. */
|
||||
if (!subtable) subtable = &OT::Null(OT::CmapSubtable);
|
||||
|
||||
/* UVS subtable. */
|
||||
if (!subtable_uvs)
|
||||
{
|
||||
const OT::CmapSubtable *st = cmap->find_subtable (0, 5);
|
||||
if (st && st->u.format == 14)
|
||||
subtable_uvs = &st->u.format14;
|
||||
}
|
||||
/* Meh. */
|
||||
if (!subtable_uvs) subtable_uvs = &OT::Null(OT::CmapSubtableFormat14);
|
||||
|
||||
this->uvs_table = subtable_uvs;
|
||||
|
||||
this->get_glyph_data = subtable;
|
||||
if (unlikely (symbol))
|
||||
this->get_glyph_func = get_glyph_from_symbol<OT::CmapSubtable>;
|
||||
else
|
||||
switch (subtable->u.format) {
|
||||
/* Accelerate format 4 and format 12. */
|
||||
default: this->get_glyph_func = get_glyph_from<OT::CmapSubtable>; break;
|
||||
case 12: this->get_glyph_func = get_glyph_from<OT::CmapSubtableFormat12>; break;
|
||||
case 4:
|
||||
{
|
||||
this->format4_accel.init (&subtable->u.format4);
|
||||
this->get_glyph_data = &this->format4_accel;
|
||||
this->get_glyph_func = this->format4_accel.get_glyph_func;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
inline void fini (void)
|
||||
{
|
||||
hb_blob_destroy (this->blob);
|
||||
}
|
||||
|
||||
inline bool get_nominal_glyph (hb_codepoint_t unicode,
|
||||
hb_codepoint_t *glyph) const
|
||||
{
|
||||
return this->get_glyph_func (this->get_glyph_data, unicode, glyph);
|
||||
}
|
||||
|
||||
inline bool get_variation_glyph (hb_codepoint_t unicode,
|
||||
hb_codepoint_t variation_selector,
|
||||
hb_codepoint_t *glyph) const
|
||||
{
|
||||
switch (this->uvs_table->get_glyph_variant (unicode,
|
||||
variation_selector,
|
||||
glyph))
|
||||
{
|
||||
case OT::GLYPH_VARIANT_NOT_FOUND: return false;
|
||||
case OT::GLYPH_VARIANT_FOUND: return true;
|
||||
case OT::GLYPH_VARIANT_USE_DEFAULT: break;
|
||||
}
|
||||
|
||||
return get_nominal_glyph (unicode, glyph);
|
||||
}
|
||||
|
||||
protected:
|
||||
typedef bool (*hb_cmap_get_glyph_func_t) (const void *obj,
|
||||
hb_codepoint_t codepoint,
|
||||
hb_codepoint_t *glyph);
|
||||
|
||||
template <typename Type>
|
||||
static inline bool get_glyph_from (const void *obj,
|
||||
hb_codepoint_t codepoint,
|
||||
hb_codepoint_t *glyph)
|
||||
{
|
||||
const Type *typed_obj = (const Type *) obj;
|
||||
return typed_obj->get_glyph (codepoint, glyph);
|
||||
}
|
||||
|
||||
template <typename Type>
|
||||
static inline bool get_glyph_from_symbol (const void *obj,
|
||||
hb_codepoint_t codepoint,
|
||||
hb_codepoint_t *glyph)
|
||||
{
|
||||
const Type *typed_obj = (const Type *) obj;
|
||||
if (likely (typed_obj->get_glyph (codepoint, glyph)))
|
||||
return true;
|
||||
|
||||
if (codepoint <= 0x00FFu)
|
||||
{
|
||||
/* For symbol-encoded OpenType fonts, we duplicate the
|
||||
* U+F000..F0FF range at U+0000..U+00FF. That's what
|
||||
* Windows seems to do, and that's hinted about at:
|
||||
* http://www.microsoft.com/typography/otspec/recom.htm
|
||||
* under "Non-Standard (Symbol) Fonts". */
|
||||
return typed_obj->get_glyph (0xF000u + codepoint, glyph);
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
private:
|
||||
hb_cmap_get_glyph_func_t get_glyph_func;
|
||||
const void *get_glyph_data;
|
||||
OT::CmapSubtableFormat4::accelerator_t format4_accel;
|
||||
|
||||
const OT::CmapSubtableFormat14 *uvs_table;
|
||||
hb_blob_t *blob;
|
||||
};
|
||||
|
||||
protected:
|
||||
|
||||
inline const CmapSubtable *find_subtable (unsigned int platform_id,
|
||||
unsigned int encoding_id) const
|
||||
{
|
||||
@ -513,14 +653,7 @@ struct cmap
|
||||
return &(this+encodingRecord[result].subtable);
|
||||
}
|
||||
|
||||
inline bool sanitize (hb_sanitize_context_t *c) const
|
||||
{
|
||||
TRACE_SANITIZE (this);
|
||||
return_trace (c->check_struct (this) &&
|
||||
likely (version == 0) &&
|
||||
encodingRecord.sanitize (c, this));
|
||||
}
|
||||
|
||||
protected:
|
||||
USHORT version; /* Table version number (0). */
|
||||
SortedArrayOf<EncodingRecord>
|
||||
encodingRecord; /* Encoding tables. */
|
||||
|
||||
@ -40,137 +40,9 @@
|
||||
#include "hb-ot-post-table.hh"
|
||||
|
||||
|
||||
typedef bool (*hb_cmap_get_glyph_func_t) (const void *obj,
|
||||
hb_codepoint_t codepoint,
|
||||
hb_codepoint_t *glyph);
|
||||
|
||||
template <typename Type>
|
||||
static inline bool get_glyph_from (const void *obj,
|
||||
hb_codepoint_t codepoint,
|
||||
hb_codepoint_t *glyph)
|
||||
{
|
||||
const Type *typed_obj = (const Type *) obj;
|
||||
return typed_obj->get_glyph (codepoint, glyph);
|
||||
}
|
||||
|
||||
template <typename Type>
|
||||
static inline bool get_glyph_from_symbol (const void *obj,
|
||||
hb_codepoint_t codepoint,
|
||||
hb_codepoint_t *glyph)
|
||||
{
|
||||
const Type *typed_obj = (const Type *) obj;
|
||||
if (likely (typed_obj->get_glyph (codepoint, glyph)))
|
||||
return true;
|
||||
|
||||
if (codepoint <= 0x00FFu)
|
||||
{
|
||||
/* For symbol-encoded OpenType fonts, we duplicate the
|
||||
* U+F000..F0FF range at U+0000..U+00FF. That's what
|
||||
* Windows seems to do, and that's hinted about at:
|
||||
* http://www.microsoft.com/typography/otspec/recom.htm
|
||||
* under "Non-Standard (Symbol) Fonts". */
|
||||
return typed_obj->get_glyph (0xF000u + codepoint, glyph);
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
struct hb_ot_face_cmap_accelerator_t
|
||||
{
|
||||
hb_cmap_get_glyph_func_t get_glyph_func;
|
||||
const void *get_glyph_data;
|
||||
OT::CmapSubtableFormat4::accelerator_t format4_accel;
|
||||
|
||||
const OT::CmapSubtableFormat14 *uvs_table;
|
||||
hb_blob_t *blob;
|
||||
|
||||
inline void init (hb_face_t *face)
|
||||
{
|
||||
this->blob = OT::Sanitizer<OT::cmap>::sanitize (face->reference_table (HB_OT_TAG_cmap));
|
||||
const OT::cmap *cmap = OT::Sanitizer<OT::cmap>::lock_instance (this->blob);
|
||||
const OT::CmapSubtable *subtable = nullptr;
|
||||
const OT::CmapSubtableFormat14 *subtable_uvs = nullptr;
|
||||
|
||||
bool symbol = false;
|
||||
/* 32-bit subtables. */
|
||||
if (!subtable) subtable = cmap->find_subtable (3, 10);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 6);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 4);
|
||||
/* 16-bit subtables. */
|
||||
if (!subtable) subtable = cmap->find_subtable (3, 1);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 3);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 2);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 1);
|
||||
if (!subtable) subtable = cmap->find_subtable (0, 0);
|
||||
if (!subtable)
|
||||
{
|
||||
subtable = cmap->find_subtable (3, 0);
|
||||
if (subtable) symbol = true;
|
||||
}
|
||||
/* Meh. */
|
||||
if (!subtable) subtable = &OT::Null(OT::CmapSubtable);
|
||||
|
||||
/* UVS subtable. */
|
||||
if (!subtable_uvs)
|
||||
{
|
||||
const OT::CmapSubtable *st = cmap->find_subtable (0, 5);
|
||||
if (st && st->u.format == 14)
|
||||
subtable_uvs = &st->u.format14;
|
||||
}
|
||||
/* Meh. */
|
||||
if (!subtable_uvs) subtable_uvs = &OT::Null(OT::CmapSubtableFormat14);
|
||||
|
||||
this->uvs_table = subtable_uvs;
|
||||
|
||||
this->get_glyph_data = subtable;
|
||||
if (unlikely (symbol))
|
||||
this->get_glyph_func = get_glyph_from_symbol<OT::CmapSubtable>;
|
||||
else
|
||||
switch (subtable->u.format) {
|
||||
/* Accelerate format 4 and format 12. */
|
||||
default: this->get_glyph_func = get_glyph_from<OT::CmapSubtable>; break;
|
||||
case 12: this->get_glyph_func = get_glyph_from<OT::CmapSubtableFormat12>; break;
|
||||
case 4:
|
||||
{
|
||||
this->format4_accel.init (&subtable->u.format4);
|
||||
this->get_glyph_data = &this->format4_accel;
|
||||
this->get_glyph_func = this->format4_accel.get_glyph_func;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
inline void fini (void)
|
||||
{
|
||||
hb_blob_destroy (this->blob);
|
||||
}
|
||||
|
||||
inline bool get_nominal_glyph (hb_codepoint_t unicode,
|
||||
hb_codepoint_t *glyph) const
|
||||
{
|
||||
return this->get_glyph_func (this->get_glyph_data, unicode, glyph);
|
||||
}
|
||||
|
||||
inline bool get_variation_glyph (hb_codepoint_t unicode,
|
||||
hb_codepoint_t variation_selector,
|
||||
hb_codepoint_t *glyph) const
|
||||
{
|
||||
switch (this->uvs_table->get_glyph_variant (unicode,
|
||||
variation_selector,
|
||||
glyph))
|
||||
{
|
||||
case OT::GLYPH_VARIANT_NOT_FOUND: return false;
|
||||
case OT::GLYPH_VARIANT_FOUND: return true;
|
||||
case OT::GLYPH_VARIANT_USE_DEFAULT: break;
|
||||
}
|
||||
|
||||
return get_nominal_glyph (unicode, glyph);
|
||||
}
|
||||
};
|
||||
|
||||
struct hb_ot_font_t
|
||||
{
|
||||
hb_ot_face_cmap_accelerator_t cmap;
|
||||
OT::cmap::accelerator_t cmap;
|
||||
OT::hmtxvmtx::accelerator_t h_metrics;
|
||||
OT::hmtxvmtx::accelerator_t v_metrics;
|
||||
OT::hb_lazy_loader_t<OT::glyf::accelerator_t> glyf;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user