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OpenHarmony
Third Party Harfbuzz
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a85d7ead
T
Third Party Harfbuzz
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体验新版 GitCode,发现更多精彩内容 >>
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a85d7ead
编写于
11月 14, 2017
作者:
B
Behdad Esfahbod
浏览文件
操作
浏览文件
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电子邮件补丁
差异文件
[ot] Move hb_ot_face_metrics_accelerator_t
上级
f00a94e1
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
109 addition
and
107 deletion
+109
-107
src/hb-ot-font.cc
src/hb-ot-font.cc
+2
-106
src/hb-ot-hmtx-table.hh
src/hb-ot-hmtx-table.hh
+107
-1
未找到文件。
src/hb-ot-font.cc
浏览文件 @
a85d7ead
...
...
@@ -37,113 +37,9 @@
#include "hb-ot-hhea-table.hh"
#include "hb-ot-hmtx-table.hh"
#include "hb-ot-kern-table.hh"
#include "hb-ot-os2-table.hh"
#include "hb-ot-post-table.hh"
#include "hb-ot-var-hvar-table.hh"
struct
hb_ot_face_metrics_accelerator_t
{
unsigned
int
num_metrics
;
unsigned
int
num_advances
;
unsigned
int
default_advance
;
unsigned
short
ascender
;
unsigned
short
descender
;
unsigned
short
line_gap
;
bool
has_font_extents
;
const
OT
::
hmtxvmtx
*
table
;
hb_blob_t
*
blob
;
const
OT
::
HVARVVAR
*
var
;
hb_blob_t
*
var_blob
;
inline
void
init
(
hb_face_t
*
face
,
hb_tag_t
_hea_tag
,
hb_tag_t
_mtx_tag
,
hb_tag_t
_var_tag
,
hb_tag_t
os2_tag
,
unsigned
int
default_advance
=
0
)
{
this
->
default_advance
=
default_advance
?
default_advance
:
face
->
get_upem
();
bool
got_font_extents
=
false
;
if
(
os2_tag
)
{
hb_blob_t
*
os2_blob
=
OT
::
Sanitizer
<
OT
::
os2
>::
sanitize
(
face
->
reference_table
(
os2_tag
));
const
OT
::
os2
*
os2
=
OT
::
Sanitizer
<
OT
::
os2
>::
lock_instance
(
os2_blob
);
#define USE_TYPO_METRICS (1u<<7)
if
(
0
!=
(
os2
->
fsSelection
&
USE_TYPO_METRICS
))
{
this
->
ascender
=
os2
->
sTypoAscender
;
this
->
descender
=
os2
->
sTypoDescender
;
this
->
line_gap
=
os2
->
sTypoLineGap
;
got_font_extents
=
(
this
->
ascender
|
this
->
descender
)
!=
0
;
}
hb_blob_destroy
(
os2_blob
);
}
hb_blob_t
*
_hea_blob
=
OT
::
Sanitizer
<
OT
::
_hea
>::
sanitize
(
face
->
reference_table
(
_hea_tag
));
const
OT
::
_hea
*
_hea
=
OT
::
Sanitizer
<
OT
::
_hea
>::
lock_instance
(
_hea_blob
);
this
->
num_advances
=
_hea
->
numberOfLongMetrics
;
if
(
!
got_font_extents
)
{
this
->
ascender
=
_hea
->
ascender
;
this
->
descender
=
_hea
->
descender
;
this
->
line_gap
=
_hea
->
lineGap
;
got_font_extents
=
(
this
->
ascender
|
this
->
descender
)
!=
0
;
}
hb_blob_destroy
(
_hea_blob
);
this
->
has_font_extents
=
got_font_extents
;
this
->
blob
=
OT
::
Sanitizer
<
OT
::
hmtxvmtx
>::
sanitize
(
face
->
reference_table
(
_mtx_tag
));
/* Cap num_metrics() and num_advances() based on table length. */
unsigned
int
len
=
hb_blob_get_length
(
this
->
blob
);
if
(
unlikely
(
this
->
num_advances
*
4
>
len
))
this
->
num_advances
=
len
/
4
;
this
->
num_metrics
=
this
->
num_advances
+
(
len
-
4
*
this
->
num_advances
)
/
2
;
/* We MUST set num_metrics to zero if num_advances is zero.
* Our get_advance() depends on that. */
if
(
unlikely
(
!
this
->
num_advances
))
{
this
->
num_metrics
=
this
->
num_advances
=
0
;
hb_blob_destroy
(
this
->
blob
);
this
->
blob
=
hb_blob_get_empty
();
}
this
->
table
=
OT
::
Sanitizer
<
OT
::
hmtxvmtx
>::
lock_instance
(
this
->
blob
);
this
->
var_blob
=
OT
::
Sanitizer
<
OT
::
HVARVVAR
>::
sanitize
(
face
->
reference_table
(
_var_tag
));
this
->
var
=
OT
::
Sanitizer
<
OT
::
HVARVVAR
>::
lock_instance
(
this
->
var_blob
);
}
inline
void
fini
(
void
)
{
hb_blob_destroy
(
this
->
blob
);
hb_blob_destroy
(
this
->
var_blob
);
}
inline
unsigned
int
get_advance
(
hb_codepoint_t
glyph
,
hb_font_t
*
font
)
const
{
if
(
unlikely
(
glyph
>=
this
->
num_metrics
))
{
/* If this->num_metrics is zero, it means we don't have the metrics table
* for this direction: return default advance. Otherwise, it means that the
* glyph index is out of bound: return zero. */
if
(
this
->
num_metrics
)
return
0
;
else
return
this
->
default_advance
;
}
return
this
->
table
->
longMetric
[
MIN
(
glyph
,
(
uint32_t
)
this
->
num_advances
-
1
)].
advance
+
this
->
var
->
get_advance_var
(
glyph
,
font
->
coords
,
font
->
num_coords
);
// TODO Optimize?!
}
};
typedef
bool
(
*
hb_cmap_get_glyph_func_t
)
(
const
void
*
obj
,
hb_codepoint_t
codepoint
,
hb_codepoint_t
*
glyph
);
...
...
@@ -275,8 +171,8 @@ struct hb_ot_face_cmap_accelerator_t
struct
hb_ot_font_t
{
hb_ot_face_cmap_accelerator_t
cmap
;
hb_ot_face_metrics_
accelerator_t
h_metrics
;
hb_ot_face_metrics_
accelerator_t
v_metrics
;
OT
::
hmtxvmtx
::
accelerator_t
h_metrics
;
OT
::
hmtxvmtx
::
accelerator_t
v_metrics
;
OT
::
hb_lazy_loader_t
<
OT
::
glyf
::
accelerator_t
>
glyf
;
OT
::
hb_lazy_loader_t
<
OT
::
CBDT
::
accelerator_t
>
cbdt
;
OT
::
hb_lazy_loader_t
<
OT
::
post
::
accelerator_t
>
post
;
...
...
src/hb-ot-hmtx-table.hh
浏览文件 @
a85d7ead
...
...
@@ -28,6 +28,8 @@
#define HB_OT_HMTX_TABLE_HH
#include "hb-open-type-private.hh"
#include "hb-ot-os2-table.hh"
#include "hb-ot-var-hvar-table.hh"
namespace
OT
{
...
...
@@ -63,7 +65,111 @@ struct hmtxvmtx
return_trace
(
true
);
}
public:
struct
accelerator_t
{
const
hmtxvmtx
*
table
;
hb_blob_t
*
blob
;
const
HVARVVAR
*
var
;
hb_blob_t
*
var_blob
;
inline
void
init
(
hb_face_t
*
face
,
hb_tag_t
_hea_tag
,
hb_tag_t
_mtx_tag
,
hb_tag_t
_var_tag
,
hb_tag_t
os2_tag
,
unsigned
int
default_advance
=
0
)
{
this
->
default_advance
=
default_advance
?
default_advance
:
face
->
get_upem
();
bool
got_font_extents
=
false
;
if
(
os2_tag
)
{
hb_blob_t
*
os2_blob
=
Sanitizer
<
os2
>::
sanitize
(
face
->
reference_table
(
os2_tag
));
const
os2
*
os2_table
=
Sanitizer
<
os2
>::
lock_instance
(
os2_blob
);
#define USE_TYPO_METRICS (1u<<7)
if
(
0
!=
(
os2_table
->
fsSelection
&
USE_TYPO_METRICS
))
{
this
->
ascender
=
os2_table
->
sTypoAscender
;
this
->
descender
=
os2_table
->
sTypoDescender
;
this
->
line_gap
=
os2_table
->
sTypoLineGap
;
got_font_extents
=
(
this
->
ascender
|
this
->
descender
)
!=
0
;
}
hb_blob_destroy
(
os2_blob
);
}
hb_blob_t
*
_hea_blob
=
Sanitizer
<
_hea
>::
sanitize
(
face
->
reference_table
(
_hea_tag
));
const
_hea
*
_hea_table
=
Sanitizer
<
_hea
>::
lock_instance
(
_hea_blob
);
this
->
num_advances
=
_hea_table
->
numberOfLongMetrics
;
if
(
!
got_font_extents
)
{
this
->
ascender
=
_hea_table
->
ascender
;
this
->
descender
=
_hea_table
->
descender
;
this
->
line_gap
=
_hea_table
->
lineGap
;
got_font_extents
=
(
this
->
ascender
|
this
->
descender
)
!=
0
;
}
hb_blob_destroy
(
_hea_blob
);
this
->
has_font_extents
=
got_font_extents
;
this
->
blob
=
Sanitizer
<
hmtxvmtx
>::
sanitize
(
face
->
reference_table
(
_mtx_tag
));
/* Cap num_metrics() and num_advances() based on table length. */
unsigned
int
len
=
hb_blob_get_length
(
this
->
blob
);
if
(
unlikely
(
this
->
num_advances
*
4
>
len
))
this
->
num_advances
=
len
/
4
;
this
->
num_metrics
=
this
->
num_advances
+
(
len
-
4
*
this
->
num_advances
)
/
2
;
/* We MUST set num_metrics to zero if num_advances is zero.
* Our get_advance() depends on that. */
if
(
unlikely
(
!
this
->
num_advances
))
{
this
->
num_metrics
=
this
->
num_advances
=
0
;
hb_blob_destroy
(
this
->
blob
);
this
->
blob
=
hb_blob_get_empty
();
}
this
->
table
=
Sanitizer
<
hmtxvmtx
>::
lock_instance
(
this
->
blob
);
this
->
var_blob
=
Sanitizer
<
HVARVVAR
>::
sanitize
(
face
->
reference_table
(
_var_tag
));
this
->
var
=
Sanitizer
<
HVARVVAR
>::
lock_instance
(
this
->
var_blob
);
}
inline
void
fini
(
void
)
{
hb_blob_destroy
(
this
->
blob
);
hb_blob_destroy
(
this
->
var_blob
);
}
inline
unsigned
int
get_advance
(
hb_codepoint_t
glyph
,
hb_font_t
*
font
)
const
{
if
(
unlikely
(
glyph
>=
this
->
num_metrics
))
{
/* If this->num_metrics is zero, it means we don't have the metrics table
* for this direction: return default advance. Otherwise, it means that the
* glyph index is out of bound: return zero. */
if
(
this
->
num_metrics
)
return
0
;
else
return
this
->
default_advance
;
}
return
this
->
table
->
longMetric
[
MIN
(
glyph
,
(
uint32_t
)
this
->
num_advances
-
1
)].
advance
+
this
->
var
->
get_advance_var
(
glyph
,
font
->
coords
,
font
->
num_coords
);
// TODO Optimize?!
}
public:
bool
has_font_extents
;
unsigned
short
ascender
;
unsigned
short
descender
;
unsigned
short
line_gap
;
private:
unsigned
int
num_metrics
;
unsigned
int
num_advances
;
unsigned
int
default_advance
;
};
protected:
LongMetric
longMetric
[
VAR
];
/* Paired advance width and leading
* bearing values for each glyph. The
* value numOfHMetrics comes from
...
...
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