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* include/freetype/internal/t1types.h (AFM_FontInfo),

Browse Source 
src/psaux/afmparse.c, src/tools/test_afm.c: Read `FontBBox',
`Ascender', and `Descender' from an AFM.

* src/type1/t1afm.c (T1_Read_Metrics): Use the metrics from the AFM.

* include/freetype/freetype.h (FT_FaceRec): Mention that fields may be
changed after file attachment.
This commit is contained in:
Wu, Chia-I (吳佳一) 2006-01-31 07:01:24 +00:00
parent 7596fd3a46
commit 98d802b83a
6 changed files with 86 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
ChangeLog
View File

@ -1,3 +1,14 @@
2006-01-31 Chia-I Wu <b90201047@ntu.edu.tw>
* include/freetype/internal/t1types.h (AFM_FontInfo),
src/psaux/afmparse.c, src/tools/test_afm.c: Read `FontBBox',
`Ascender', and `Descender' from an AFM.
* src/type1/t1afm.c (T1_Read_Metrics): Use the metrics from the AFM.
* include/freetype/freetype.h (FT_FaceRec): Mention that fields may be
changed after file attachment.
2006-01-28 Werner Lemberg <wl@gnu.org>
* src/*/module.mk (.PHONY): Add.

10
include/freetype/freetype.h
View File

@ -826,11 +826,7 @@ FT_BEGIN_HEADER
/* */
/* num_charmaps :: The number of charmaps in the face. */
/* */
/* charmaps :: An array of the charmaps of the face. The */
/* array might change after a call to */
/* @FT_Attach_File or @FT_Attach_Stream (e.g., */
/* if used to hook an additional encoding or */
/* CMap to the face object). */
/* charmaps :: An array of the charmaps of the face. */
/* */
/* generic :: A field reserved for client uses. See the */
/* @FT_Generic type description. */
@ -895,6 +891,10 @@ FT_BEGIN_HEADER
/* */
/* charmap :: The current active charmap for this face. */
/* */
/* <Note> */
/* Fields may be changed after a call to @FT_Attach_File or */
/* @FT_Attach_Stream. */
/* */
typedef struct FT_FaceRec_
{
FT_Long num_faces;

3
include/freetype/internal/t1types.h
View File

@ -163,6 +163,9 @@ FT_BEGIN_HEADER
typedef struct AFM_FontInfoRec_
{
FT_Bool IsCIDFont;
FT_BBox FontBBox;
FT_Fixed Ascender;
FT_Fixed Descender;
AFM_TrackKern TrackKerns; /* free if non-NULL */
FT_Int NumTrackKern;
AFM_KernPair KernPairs; /* free if non-NULL */

45
src/psaux/afmparse.c
View File

@ -607,6 +607,7 @@
{
AFM_ValueRec shared_vals[5];
switch ( afm_tokenize( key, len ) )
{
case AFM_TOKEN_TRACKKERN:
@ -863,6 +864,9 @@
while ( ( key = afm_parser_next_key( parser, 1, &len ) ) != 0 )
{
AFM_ValueRec shared_vals[4];
switch ( afm_tokenize( key, len ) )
{
case AFM_TOKEN_METRICSSETS:
@ -878,16 +882,41 @@
break;
case AFM_TOKEN_ISCIDFONT:
{
AFM_ValueRec shared_vals[1];
shared_vals[0].type = AFM_VALUE_TYPE_BOOL;
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
goto Fail;
shared_vals[0].type = AFM_VALUE_TYPE_BOOL;
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
goto Fail;
fi->IsCIDFont = shared_vals[0].u.b;
break;
fi->IsCIDFont = shared_vals[0].u.b;
}
case AFM_TOKEN_FONTBBOX:
shared_vals[0].type = AFM_VALUE_TYPE_FIXED;
shared_vals[1].type = AFM_VALUE_TYPE_FIXED;
shared_vals[2].type = AFM_VALUE_TYPE_FIXED;
shared_vals[3].type = AFM_VALUE_TYPE_FIXED;
if ( afm_parser_read_vals( parser, shared_vals, 4 ) != 4 )
goto Fail;
fi->FontBBox.xMin = shared_vals[0].u.f;
fi->FontBBox.yMin = shared_vals[1].u.f;
fi->FontBBox.xMax = shared_vals[2].u.f;
fi->FontBBox.yMax = shared_vals[3].u.f;
break;
case AFM_TOKEN_ASCENDER:
shared_vals[0].type = AFM_VALUE_TYPE_FIXED;
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
goto Fail;
fi->Ascender = shared_vals[0].u.f;
break;
case AFM_TOKEN_DESCENDER:
shared_vals[0].type = AFM_VALUE_TYPE_FIXED;
if ( afm_parser_read_vals( parser, shared_vals, 1 ) != 1 )
goto Fail;
fi->Descender = shared_vals[0].u.f;
break;
case AFM_TOKEN_STARTCHARMETRICS:

9
src/tools/test_afm.c
View File

@ -1,5 +1,5 @@
/*
* gcc -I../../include -o test_afm test_afm.c \
* gcc -DFT2_BUILD_LIBRARY -I../../include -o test_afm test_afm.c \
* -L../../objs/.libs -lfreetype -lz -static
*/
#include <ft2build.h>
@ -15,6 +15,13 @@
printf( "This AFM is for %sCID font.\n\n",
( fi->IsCIDFont ) ? "" : "non-" );
printf( "FontBBox: %.2f %.2f %.2f %.2f\n", fi->FontBBox.xMin / 65536.,
fi->FontBBox.yMin / 65536.,
fi->FontBBox.xMax / 65536.,
fi->FontBBox.yMax / 65536. );
printf( "Ascender: %.2f\n", fi->Ascender / 65536. );
printf( "Descender: %.2f\n\n", fi->Descender / 65536. );
if ( fi->NumTrackKern )
printf( "There are %d sets of track kernings:\n",
fi->NumTrackKern );

26
src/type1/t1afm.c
View File

@ -230,6 +230,7 @@
AFM_ParserRec parser;
AFM_FontInfo fi;
FT_Error error = T1_Err_Unknown_File_Format;
T1_Font t1_font = &( (T1_Face)t1_face )->type1;
if ( FT_NEW( fi ) )
@ -241,6 +242,10 @@
return error;
}
fi->FontBBox = t1_font->font_bbox;
fi->Ascender = t1_font->font_bbox.yMax;
fi->Descender = t1_font->font_bbox.yMin;
psaux = (PSAux_Service)( (T1_Face)t1_face )->psaux;
if ( psaux && psaux->afm_parser_funcs )
{
@ -253,7 +258,7 @@
{
parser.FontInfo = fi;
parser.get_index = t1_get_index;
parser.user_data = &( (T1_Face)t1_face )->type1;
parser.user_data = t1_font;
error = psaux->afm_parser_funcs->parse( &parser );
psaux->afm_parser_funcs->done( &parser );
@ -271,10 +276,23 @@
error = T1_Read_PFM( t1_face, stream, fi );
}
if ( !error && fi->NumKernPair )
if ( !error )
{
t1_face->face_flags |= FT_FACE_FLAG_KERNING;
( (T1_Face)t1_face )->afm_data = fi;
t1_font->font_bbox = fi->FontBBox;
t1_face->bbox.xMin = fi->FontBBox.xMin >> 16;
t1_face->bbox.yMin = fi->FontBBox.yMin >> 16;
t1_face->bbox.xMax = ( fi->FontBBox.xMax + 0xFFFFU ) >> 16;
t1_face->bbox.yMax = ( fi->FontBBox.yMax + 0xFFFFU ) >> 16;
t1_face->ascender = ( fi->Ascender + 0x8000U ) >> 16;
t1_face->descender = ( fi->Descender + 0x8000U ) >> 16;
if ( fi->NumKernPair )
{
t1_face->face_flags |= FT_FACE_FLAG_KERNING;
( (T1_Face)t1_face )->afm_data = fi;
}
}
FT_FRAME_EXIT();