1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/****************************************************************************
*
* ftpfr.c
*
* FreeType API for accessing PFR-specific data (body).
*
* Copyright (C) 2002-2024 by
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used,
* modified, and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify, or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*
*/
#include <freetype/internal/ftdebug.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/internal/services/svpfr.h>
/* check the format */
static FT_Service_PfrMetrics
ft_pfr_check( FT_Face face )
{
FT_Service_PfrMetrics service = NULL;
if ( face )
FT_FACE_LOOKUP_SERVICE( face, service, PFR_METRICS );
return service;
}
/* documentation is in ftpfr.h */
FT_EXPORT_DEF( FT_Error )
FT_Get_PFR_Metrics( FT_Face face,
FT_UInt *aoutline_resolution,
FT_UInt *ametrics_resolution,
FT_Fixed *ametrics_x_scale,
FT_Fixed *ametrics_y_scale )
{
FT_Error error = FT_Err_Ok;
FT_Service_PfrMetrics service;
if ( !face )
return FT_THROW( Invalid_Face_Handle );
service = ft_pfr_check( face );
if ( service )
{
error = service->get_metrics( face,
aoutline_resolution,
ametrics_resolution,
ametrics_x_scale,
ametrics_y_scale );
}
else
{
FT_Fixed x_scale, y_scale;
/* this is not a PFR font */
if ( aoutline_resolution )
*aoutline_resolution = face->units_per_EM;
if ( ametrics_resolution )
*ametrics_resolution = face->units_per_EM;
x_scale = y_scale = 0x10000L;
if ( face->size )
{
x_scale = face->size->metrics.x_scale;
y_scale = face->size->metrics.y_scale;
}
if ( ametrics_x_scale )
*ametrics_x_scale = x_scale;
if ( ametrics_y_scale )
*ametrics_y_scale = y_scale;
error = FT_THROW( Unknown_File_Format );
}
return error;
}
/* documentation is in ftpfr.h */
FT_EXPORT_DEF( FT_Error )
FT_Get_PFR_Kerning( FT_Face face,
FT_UInt left,
FT_UInt right,
FT_Vector *avector )
{
FT_Error error;
FT_Service_PfrMetrics service;
if ( !face )
return FT_THROW( Invalid_Face_Handle );
if ( !avector )
return FT_THROW( Invalid_Argument );
service = ft_pfr_check( face );
if ( service )
error = service->get_kerning( face, left, right, avector );
else
error = FT_Get_Kerning( face, left, right,
FT_KERNING_UNSCALED, avector );
return error;
}
/* documentation is in ftpfr.h */
FT_EXPORT_DEF( FT_Error )
FT_Get_PFR_Advance( FT_Face face,
FT_UInt gindex,
FT_Pos *aadvance )
{
FT_Error error;
FT_Service_PfrMetrics service;
if ( !face )
return FT_THROW( Invalid_Face_Handle );
if ( !aadvance )
return FT_THROW( Invalid_Argument );
service = ft_pfr_check( face );
if ( service )
error = service->get_advance( face, gindex, aadvance );
else
/* XXX: TODO: PROVIDE ADVANCE-LOADING METHOD TO ALL FONT DRIVERS */
error = FT_THROW( Invalid_Argument );
return error;
}
/* END */
|