X-Git-Url: https://git.octo.it/?a=blobdiff_plain;ds=sidebyside;f=libraries%2Ffreetype-2.0.5%2Ft1afm.c;fp=libraries%2Ffreetype-2.0.5%2Ft1afm.c;h=0000000000000000000000000000000000000000;hb=bab0189ee9d56aca8bea909275317ab4e0be09ee;hp=d654da9956dc58aec26edfc10296e67eebfcadbf;hpb=b837c0527f117b54845242ee7626df6d88394444;p=rrdtool.git diff --git a/libraries/freetype-2.0.5/t1afm.c b/libraries/freetype-2.0.5/t1afm.c deleted file mode 100644 index d654da9..0000000 --- a/libraries/freetype-2.0.5/t1afm.c +++ /dev/null @@ -1,286 +0,0 @@ -/***************************************************************************/ -/* */ -/* t1afm.c */ -/* */ -/* AFM support for Type 1 fonts (body). */ -/* */ -/* Copyright 1996-2001 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 -#include "t1afm.h" -#include FT_INTERNAL_STREAM_H -#include FT_INTERNAL_TYPE1_TYPES_H -#include /* for qsort() */ -#include /* for strcmp() */ -#include /* for isalnum() */ - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_t1afm - - - FT_LOCAL_DEF void - T1_Done_AFM( FT_Memory memory, - T1_AFM* afm ) - { - FREE( afm->kern_pairs ); - afm->num_pairs = 0; - FREE( afm ); - } - - -#undef IS_KERN_PAIR -#define IS_KERN_PAIR( p ) ( p[0] == 'K' && p[1] == 'P' ) - -#define IS_ALPHANUM( c ) ( isalnum( c ) || \ - c == '_' || \ - c == '.' ) - - - /* read a glyph name and return the equivalent glyph index */ - static FT_UInt - afm_atoindex( FT_Byte** start, - FT_Byte* limit, - T1_Font* type1 ) - { - FT_Byte* p = *start; - FT_Int len; - FT_UInt result = 0; - char temp[64]; - - - /* skip whitespace */ - while ( ( *p == ' ' || *p == '\t' || *p == ':' || *p == ';' ) && - p < limit ) - p++; - *start = p; - - /* now, read glyph name */ - while ( IS_ALPHANUM( *p ) && p < limit ) - p++; - - len = (FT_Int)( p - *start ); - - if ( len > 0 && len < 64 ) - { - FT_Int n; - - - /* copy glyph name to intermediate array */ - MEM_Copy( temp, *start, len ); - temp[len] = 0; - - /* lookup glyph name in face array */ - for ( n = 0; n < type1->num_glyphs; n++ ) - { - char* gname = (char*)type1->glyph_names[n]; - - - if ( gname && gname[0] == temp[0] && strcmp( gname, temp ) == 0 ) - { - result = n; - break; - } - } - } - *start = p; - return result; - } - - - /* read an integer */ - static int - afm_atoi( FT_Byte** start, - FT_Byte* limit ) - { - FT_Byte* p = *start; - int sum = 0; - int sign = 1; - - - /* skip everything that is not a number */ - while ( p < limit && !isdigit( *p ) ) - { - sign = 1; - if ( *p == '-' ) - sign = -1; - - p++; - } - - while ( p < limit && isdigit( *p ) ) - { - sum = sum * 10 + ( *p - '0' ); - p++; - } - *start = p; - - return sum * sign; - } - - -#undef KERN_INDEX -#define KERN_INDEX( g1, g2 ) ( ( (FT_ULong)g1 << 16 ) | g2 ) - - - /* compare two kerning pairs */ - FT_CALLBACK_DEF( int ) - compare_kern_pairs( const void* a, - const void* b ) - { - T1_Kern_Pair* pair1 = (T1_Kern_Pair*)a; - T1_Kern_Pair* pair2 = (T1_Kern_Pair*)b; - - FT_ULong index1 = KERN_INDEX( pair1->glyph1, pair1->glyph2 ); - FT_ULong index2 = KERN_INDEX( pair2->glyph1, pair2->glyph2 ); - - - return ( index1 - index2 ); - } - - - /* parse an AFM file -- for now, only read the kerning pairs */ - FT_LOCAL_DEF FT_Error - T1_Read_AFM( FT_Face t1_face, - FT_Stream stream ) - { - FT_Error error; - FT_Memory memory = stream->memory; - FT_Byte* start; - FT_Byte* limit; - FT_Byte* p; - FT_Int count = 0; - T1_Kern_Pair* pair; - T1_Font* type1 = &((T1_Face)t1_face)->type1; - T1_AFM* afm = 0; - - - if ( ACCESS_Frame( stream->size ) ) - return error; - - start = (FT_Byte*)stream->cursor; - limit = (FT_Byte*)stream->limit; - p = start; - - /* we are now going to count the occurences of `KP' or `KPX' in */ - /* the AFM file */ - count = 0; - for ( p = start; p < limit - 3; p++ ) - { - if ( IS_KERN_PAIR( p ) ) - count++; - } - - /* Actually, kerning pairs are simply optional! */ - if ( count == 0 ) - goto Exit; - - /* allocate the pairs */ - if ( ALLOC( afm, sizeof ( *afm ) ) || - ALLOC_ARRAY( afm->kern_pairs, count, T1_Kern_Pair ) ) - goto Exit; - - /* now, read each kern pair */ - pair = afm->kern_pairs; - afm->num_pairs = count; - - /* save in face object */ - ((T1_Face)t1_face)->afm_data = afm; - - t1_face->face_flags |= FT_FACE_FLAG_KERNING; - - for ( p = start; p < limit - 3; p++ ) - { - if ( IS_KERN_PAIR( p ) ) - { - FT_Byte* q; - - - /* skip keyword (KP or KPX) */ - q = p + 2; - if ( *q == 'X' ) - q++; - - pair->glyph1 = afm_atoindex( &q, limit, type1 ); - pair->glyph2 = afm_atoindex( &q, limit, type1 ); - pair->kerning.x = afm_atoi( &q, limit ); - - pair->kerning.y = 0; - if ( p[2] != 'X' ) - pair->kerning.y = afm_atoi( &q, limit ); - - pair++; - } - } - - /* now, sort the kern pairs according to their glyph indices */ - qsort( afm->kern_pairs, count, sizeof ( T1_Kern_Pair ), - compare_kern_pairs ); - - Exit: - if ( error ) - FREE( afm ); - - FORGET_Frame(); - - return error; - } - - - /* find the kerning for a given glyph pair */ - FT_LOCAL_DEF void - T1_Get_Kerning( T1_AFM* afm, - FT_UInt glyph1, - FT_UInt glyph2, - FT_Vector* kerning ) - { - T1_Kern_Pair *min, *mid, *max; - FT_ULong index = KERN_INDEX( glyph1, glyph2 ); - - - /* simple binary search */ - min = afm->kern_pairs; - max = min + afm->num_pairs - 1; - - while ( min <= max ) - { - FT_ULong midi; - - - mid = min + ( max - min ) / 2; - midi = KERN_INDEX( mid->glyph1, mid->glyph2 ); - - if ( midi == index ) - { - *kerning = mid->kerning; - return; - } - - if ( midi < index ) - min = mid + 1; - else - max = mid - 1; - } - - kerning->x = 0; - kerning->y = 0; - } - - -/* END */