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Add new cmap support to BDF driver 

* src/bdf/bdfdrivr.c (BDF_CMapRec) [FT_CONFIG_OPTION_USE_CMAPS]:
New structure.
(bdf_cmap_init, bdf_cmap_done, bdf_cmap_char_index,
bdf_cmap_char_next) [FT_CONFIG_OPTION_USE_CMAPS]: New functions.
(BDF_Get_Char_Index) [!FT_CONFIG_OPTION_USE_CMAPS]: Use only
conditionally.
(BDF_Face_Init): Handle `AVERAGE_WIDTH' and `POINT_SIZE' keywords.
Implement new cmap handling.
(bdf_driver_class): Updated.
This commit is contained in:
Werner Lemberg 2002-06-14 08:54:02 +00:00
parent 2f3bdf9158
commit ec6a0a1612
2 changed files with 278 additions and 66 deletions
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14
ChangeLog
View File

@ -1,3 +1,17 @@
2002-06-14 Detlef Würkner <TetiSoft@apg.lahn.de>
Add new cmap support to BDF driver
* src/bdf/bdfdrivr.c (BDF_CMapRec) [FT_CONFIG_OPTION_USE_CMAPS]:
New structure.
(bdf_cmap_init, bdf_cmap_done, bdf_cmap_char_index,
bdf_cmap_char_next) [FT_CONFIG_OPTION_USE_CMAPS]: New functions.
(BDF_Get_Char_Index) [!FT_CONFIG_OPTION_USE_CMAPS]: Use only
conditionally.
(BDF_Face_Init): Handle `AVERAGE_WIDTH' and `POINT_SIZE' keywords.
Implement new cmap handling.
(bdf_driver_class): Updated.
2002-06-14 Werner Lemberg <wl@gnu.org>
* Makefile, configure, */*.mk, builds/unix/unix-def.in,

330
src/bdf/bdfdrivr.c
View File

@ -46,6 +46,166 @@ THE SOFTWARE.
#define FT_COMPONENT trace_bdfdriver
#ifdef FT_CONFIG_OPTION_USE_CMAPS
typedef struct BDF_CMapRec_
{
FT_CMapRec cmap;
FT_UInt num_encodings;
BDF_encoding_el* encodings;
} BDF_CMapRec, *BDF_CMap;
FT_CALLBACK_DEF( FT_Error )
bdf_cmap_init( BDF_CMap cmap )
{
BDF_Face face = (BDF_Face)FT_CMAP_FACE( cmap );
cmap->num_encodings = face->bdffont->glyphs_used - 1;
cmap->encodings = face->en_table;
return FT_Err_Ok;
}
FT_CALLBACK_DEF( void )
bdf_cmap_done( BDF_CMap cmap )
{
cmap->encodings = NULL;
cmap->num_encodings = 0;
}
FT_CALLBACK_DEF( FT_UInt )
bdf_cmap_char_index( BDF_CMap cmap,
FT_UInt32 charcode )
{
BDF_encoding_el* encodings = cmap->encodings;
FT_UInt min, max, mid;
FT_UInt result = 0;
min = 0;
max = cmap->num_encodings;
while ( min < max )
{
FT_UInt32 code;
mid = ( min + max ) >> 1;
code = encodings[mid].enc;
if ( charcode == code )
{
result = encodings[mid].glyph;
break;
}
if ( charcode < code )
max = mid;
else
min = mid + 1;
}
return result;
}
FT_CALLBACK_DEF( FT_UInt )
bdf_cmap_char_next( BDF_CMap cmap,
FT_UInt32 *acharcode )
{
BDF_encoding_el* encodings = cmap->encodings;
FT_UInt min, max, mid;
FT_UInt32 charcode = *acharcode + 1;
FT_UInt result = 0;
min = 0;
max = cmap->num_encodings;
while ( min < max )
{
FT_UInt32 code;
mid = ( min + max ) >> 1;
code = encodings[mid].enc;
if ( charcode == code )
{
result = encodings[mid].glyph;
goto Exit;
}
if ( charcode < code )
max = mid;
else
min = mid + 1;
}
charcode = 0;
if ( min < cmap->num_encodings )
{
charcode = encodings[min].enc;
result = encodings[min].glyph;
}
Exit:
*acharcode = charcode;
return result;
}
FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec bdf_cmap_class =
{
sizeof( BDF_CMapRec ),
(FT_CMap_InitFunc) bdf_cmap_init,
(FT_CMap_DoneFunc) bdf_cmap_done,
(FT_CMap_CharIndexFunc)bdf_cmap_char_index,
(FT_CMap_CharNextFunc) bdf_cmap_char_next
};
#else /* !FT_CONFIG_OPTION_USE_CMAPS */
static FT_UInt
BDF_Get_Char_Index( FT_CharMap charmap,
FT_ULong char_code )
{
BDF_Face face = (BDF_Face)charmap->face;
BDF_encoding_el* en_table = face->en_table;
int low, high, mid;
FT_TRACE4(( "BDF_Get_Char_Index %ld\n", char_code ));
low = 0;
high = face->bdffont->glyphs_used - 1;
while ( low <= high )
{
mid = ( low + high ) / 2;
if ( char_code < en_table[mid].enc )
high = mid - 1;
else if ( char_code > en_table[mid].enc )
low = mid + 1;
else
return en_table[mid].glyph;
}
return face->bdffont->default_glyph;
}
#endif /* !FT_CONFIG_OPTION_USE_CMAPS */
FT_CALLBACK_DEF( FT_Error )
BDF_Face_Done( BDF_Face face )
{
@ -182,35 +342,46 @@ THE SOFTWARE.
if ( FT_NEW_ARRAY( root->available_sizes, 1 ) )
goto Exit;
prop = bdf_get_font_property( font, (char *)"AVERAGE_WIDTH" );
if ( ( prop != NULL ) && ( prop->value.int32 >= 10 ) )
root->available_sizes->width = prop->value.int32 / 10;
prop = bdf_get_font_property( font, (char *)"PIXEL_SIZE" );
if ( prop != NULL )
{
bdf_property_t *xres = 0, *yres = 0;
xres = bdf_get_font_property( font, (char *)"RESOLUTION_X" );
yres = bdf_get_font_property( font, (char *)"RESOLUTION_Y" );
if ( ( xres != NULL ) && ( yres != NULL ) )
{
FT_TRACE4(( "PIXEL_SIZE: %d RESOLUTION_X: %d RESOLUTION_Y: %d\n",
prop->value.int32,
xres->value.int32,
yres->value.int32 ));
root->available_sizes->width =
(FT_Short)( prop->value.int32 * 75 / xres->value.int32 );
root->available_sizes->height =
(FT_Short)( prop->value.int32 * 75 / yres->value.int32 );
}
}
root->available_sizes->height = prop->value.int32;
else
{
/* some fonts have broken SIZE declaration (jiskan24.bdf) */
FT_ERROR(( "BDF_Face_Init: reading size\n" ));
root->available_sizes->width = (FT_Short)font->point_size ;
root->available_sizes->height = (FT_Short)font->point_size ;
prop = bdf_get_font_property( font, (char *)"POINT_SIZE" );
if ( prop != NULL )
{
bdf_property_t *yres;
yres = bdf_get_font_property( font, (char *)"RESOLUTION_Y" );
if ( yres != NULL )
{
FT_TRACE4(( "POINT_SIZE: %d RESOLUTION_Y: %d\n",
prop->value.int32, yres->value.int32 ));
root->available_sizes->height =
(FT_Short)( prop->value.int32 * yres->value.int32 / 720 );
}
}
}
if ( root->available_sizes->width == 0 )
{
if ( root->available_sizes->height == 0 )
{
/* some fonts have broken SIZE declaration (jiskan24.bdf) */
FT_ERROR(( "BDF_Face_Init: reading size\n" ));
root->available_sizes->width = (FT_Short)font->point_size;
}
else
root->available_sizes->width = root->available_sizes->height;
}
if ( root->available_sizes->height == 0 )
root->available_sizes->height = root->available_sizes->width;
/* encoding table */
{
bdf_glyph_t* cur = font->glyphs;
@ -231,6 +402,7 @@ THE SOFTWARE.
/* charmaps */
{
bdf_property_t *charset_registry = 0, *charset_encoding = 0;
FT_Bool unicode_charmap = 0;
charset_registry =
@ -247,25 +419,77 @@ THE SOFTWARE.
if ( FT_NEW_ARRAY( face->charset_encoding,
strlen( charset_encoding->value.atom ) + 1 ) )
goto Exit;
if (FT_NEW_ARRAY( face->charset_registry,
strlen( charset_registry->value.atom ) + 1 ) )
if ( FT_NEW_ARRAY( face->charset_registry,
strlen( charset_registry->value.atom ) + 1 ) )
goto Exit;
ft_strcpy( face->charset_registry, charset_registry->value.atom );
ft_strcpy( face->charset_encoding, charset_encoding->value.atom );
if ( !ft_strcmp( face->charset_registry, "ISO10646" ) ||
( !ft_strcmp( face->charset_registry, "ISO8859" ) &&
!ft_strcmp( face->charset_encoding, "1" ) ) )
unicode_charmap = 1;
#ifdef FT_CONFIG_OPTION_USE_CMAPS
{
FT_CharMapRec charmap;
charmap.face = FT_FACE( face );
charmap.encoding = ft_encoding_none;
charmap.platform_id = 0;
charmap.encoding_id = 0;
if ( unicode_charmap )
{
charmap.encoding = ft_encoding_unicode;
charmap.platform_id = 3;
charmap.encoding_id = 1;
}
error = FT_CMap_New( &bdf_cmap_class, NULL, &charmap, NULL );
}
#else /* !FT_CONFIG_OPTION_USE_CMAPS */
face->charmap.encoding = ft_encoding_none;
face->charmap.platform_id = 0;
face->charmap.encoding_id = 0;
if ( unicode_charmap )
{
face->charmap.encoding = ft_encoding_unicode;
face->charmap.platform_id = 3;
face->charmap.encoding_id = 1;
}
face->charmap.face = root;
face->charmap_handle = &face->charmap;
root->charmap = face->charmap_handle;
#endif /* !FT_CONFIG_OPTION_USE_CMAPS */
goto Exit;
}
}
/* otherwise assume adobe standard encoding */
/* otherwise assume Adobe standard encoding */
#ifdef FT_CONFIG_OPTION_USE_CMAPS
{
FT_CharMapRec charmap;
charmap.face = FT_FACE( face );
charmap.encoding = ft_encoding_none;
charmap.platform_id = 0;
charmap.encoding_id = 0;
error = FT_CMap_New( &bdf_cmap_class, NULL, &charmap, NULL );
}
#else /* !FT_CONFIG_OPTION_USE_CMAPS */
face->charmap.encoding = ft_encoding_adobe_standard;
face->charmap.platform_id = 7; /* taken from t1objs.c */
face->charmap.encoding_id = 0;
@ -273,6 +497,9 @@ THE SOFTWARE.
face->charmap_handle = &face->charmap;
root->charmap = face->charmap_handle;
#endif /* !FT_CONFIG_OPTION_USE_CMAPS */
}
}
@ -285,8 +512,8 @@ THE SOFTWARE.
}
static
FT_Error BDF_Set_Pixel_Size( FT_Size size )
static FT_Error
BDF_Set_Pixel_Size( FT_Size size )
{
BDF_Face face = (BDF_Face)FT_SIZE_FACE( size );
FT_Face root = FT_FACE( face );
@ -336,8 +563,8 @@ THE SOFTWARE.
/* slot, bitmap => freetype, glyph => bdflib */
glyph = face->bdffont->glyphs[glyph_index];
bitmap->rows = glyph.bbx.height;
bitmap->width = glyph.bbx.width;
bitmap->rows = glyph.bbx.height;
bitmap->width = glyph.bbx.width;
if ( bpp == 1 )
{
@ -461,35 +688,6 @@ THE SOFTWARE.
}
static
FT_UInt BDF_Get_Char_Index( FT_CharMap charmap,
FT_ULong char_code )
{
BDF_Face face = (BDF_Face)charmap->face;
BDF_encoding_el* en_table = face->en_table;
int low, high, mid;
FT_TRACE4(( "BDF_Get_Char_Index %ld\n", char_code ));
low = 0;
high = face->bdffont->glyphs_used - 1;
while ( low <= high )
{
mid = ( low + high ) / 2;
if ( char_code < en_table[mid].enc )
high = mid - 1;
else if ( char_code > en_table[mid].enc )
low = mid + 1;
else
return en_table[mid].glyph;
}
return face->bdffont->default_glyph;
}
FT_CALLBACK_TABLE_DEF
const FT_Driver_ClassRec bdf_driver_class =
{
@ -508,9 +706,9 @@ THE SOFTWARE.
(FT_Module_Requester) 0
},
sizeof( BDF_FaceRec ),
sizeof( FT_SizeRec ),
sizeof( FT_GlyphSlotRec ),
sizeof ( BDF_FaceRec ),
sizeof ( FT_SizeRec ),
sizeof ( FT_GlyphSlotRec ),
(FT_Face_InitFunc) BDF_Face_Init,
(FT_Face_DoneFunc) BDF_Face_Done,
@ -524,7 +722,7 @@ THE SOFTWARE.
(FT_Slot_LoadFunc) BDF_Glyph_Load,
#ifndef FT_CONFIG_OPTION_USE_CMAPS
#ifdef FT_CONFIG_OPTION_USE_CMAPS
(FT_CharMap_CharIndexFunc)0,
#else
(FT_CharMap_CharIndexFunc)BDF_Get_Char_Index,
@ -534,10 +732,10 @@ THE SOFTWARE.
(FT_Face_AttachFunc) 0,
(FT_Face_GetAdvancesFunc) 0,
#ifndef FT_CONFIG_OPTION_USE_CMAPS
(FT_CharMap_CharNextFunc) 0, /* BDF_Char_Get_Next,*/
#else
#ifdef FT_CONFIG_OPTION_USE_CMAPS
(FT_CharMap_CharNextFunc) 0
#else
(FT_CharMap_CharNextFunc) 0 /* BDF_Get_Next_Char */
#endif
};