diff -r f3840de881bd -r 915436ff64ab misc/libfreetype/src/autofit/afglobal.c --- a/misc/libfreetype/src/autofit/afglobal.c Thu Jul 25 23:16:06 2013 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,319 +0,0 @@ -/***************************************************************************/ -/* */ -/* afglobal.c */ -/* */ -/* Auto-fitter routines to compute global hinting values (body). */ -/* */ -/* Copyright 2003-2011 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 "afglobal.h" -#include "afdummy.h" -#include "aflatin.h" -#include "afcjk.h" -#include "afindic.h" -#include "afpic.h" - -#include "aferrors.h" - -#ifdef FT_OPTION_AUTOFIT2 -#include "aflatin2.h" -#endif - -#ifndef FT_CONFIG_OPTION_PIC - - /* when updating this table, don't forget to update */ - /* AF_SCRIPT_CLASSES_COUNT and autofit_module_class_pic_init */ - - /* populate this list when you add new scripts */ - static AF_ScriptClass const af_script_classes[] = - { - &af_dummy_script_class, -#ifdef FT_OPTION_AUTOFIT2 - &af_latin2_script_class, -#endif - &af_latin_script_class, - &af_cjk_script_class, - &af_indic_script_class, - NULL /* do not remove */ - }; - -#endif /* !FT_CONFIG_OPTION_PIC */ - - /* index of default script in `af_script_classes' */ -#define AF_SCRIPT_LIST_DEFAULT 2 - /* a bit mask indicating an uncovered glyph */ -#define AF_SCRIPT_LIST_NONE 0x7F - /* if this flag is set, we have an ASCII digit */ -#define AF_DIGIT 0x80 - - - /* - * Note that glyph_scripts[] is used to map each glyph into - * an index into the `af_script_classes' array. - * - */ - typedef struct AF_FaceGlobalsRec_ - { - FT_Face face; - FT_Long glyph_count; /* same as face->num_glyphs */ - FT_Byte* glyph_scripts; - - AF_ScriptMetrics metrics[AF_SCRIPT_MAX]; - - } AF_FaceGlobalsRec; - - - /* Compute the script index of each glyph within a given face. */ - - static FT_Error - af_face_globals_compute_script_coverage( AF_FaceGlobals globals ) - { - FT_Error error = AF_Err_Ok; - FT_Face face = globals->face; - FT_CharMap old_charmap = face->charmap; - FT_Byte* gscripts = globals->glyph_scripts; - FT_UInt ss, i; - - - /* the value AF_SCRIPT_LIST_NONE means `uncovered glyph' */ - FT_MEM_SET( globals->glyph_scripts, - AF_SCRIPT_LIST_NONE, - globals->glyph_count ); - - error = FT_Select_Charmap( face, FT_ENCODING_UNICODE ); - if ( error ) - { - /* - * Ignore this error; we simply use the default script. - * XXX: Shouldn't we rather disable hinting? - */ - error = AF_Err_Ok; - goto Exit; - } - - /* scan each script in a Unicode charmap */ - for ( ss = 0; AF_SCRIPT_CLASSES_GET[ss]; ss++ ) - { - AF_ScriptClass clazz = AF_SCRIPT_CLASSES_GET[ss]; - AF_Script_UniRange range; - - - if ( clazz->script_uni_ranges == NULL ) - continue; - - /* - * Scan all unicode points in the range and set the corresponding - * glyph script index. - */ - for ( range = clazz->script_uni_ranges; range->first != 0; range++ ) - { - FT_ULong charcode = range->first; - FT_UInt gindex; - - - gindex = FT_Get_Char_Index( face, charcode ); - - if ( gindex != 0 && - gindex < (FT_ULong)globals->glyph_count && - gscripts[gindex] == AF_SCRIPT_LIST_NONE ) - gscripts[gindex] = (FT_Byte)ss; - - for (;;) - { - charcode = FT_Get_Next_Char( face, charcode, &gindex ); - - if ( gindex == 0 || charcode > range->last ) - break; - - if ( gindex < (FT_ULong)globals->glyph_count && - gscripts[gindex] == AF_SCRIPT_LIST_NONE ) - gscripts[gindex] = (FT_Byte)ss; - } - } - } - - /* mark ASCII digits */ - for ( i = 0x30; i <= 0x39; i++ ) - { - FT_UInt gindex = FT_Get_Char_Index( face, i ); - - - if ( gindex != 0 && gindex < (FT_ULong)globals->glyph_count ) - gscripts[gindex] |= AF_DIGIT; - } - - Exit: - /* - * By default, all uncovered glyphs are set to the latin script. - * XXX: Shouldn't we disable hinting or do something similar? - */ - { - FT_Long nn; - - - for ( nn = 0; nn < globals->glyph_count; nn++ ) - { - if ( ( gscripts[nn] & ~AF_DIGIT ) == AF_SCRIPT_LIST_NONE ) - { - gscripts[nn] &= ~AF_SCRIPT_LIST_NONE; - gscripts[nn] |= AF_SCRIPT_LIST_DEFAULT; - } - } - } - - FT_Set_Charmap( face, old_charmap ); - return error; - } - - - FT_LOCAL_DEF( FT_Error ) - af_face_globals_new( FT_Face face, - AF_FaceGlobals *aglobals ) - { - FT_Error error; - FT_Memory memory; - AF_FaceGlobals globals = NULL; - - - memory = face->memory; - - if ( !FT_ALLOC( globals, sizeof ( *globals ) + - face->num_glyphs * sizeof ( FT_Byte ) ) ) - { - globals->face = face; - globals->glyph_count = face->num_glyphs; - globals->glyph_scripts = (FT_Byte*)( globals + 1 ); - - error = af_face_globals_compute_script_coverage( globals ); - if ( error ) - { - af_face_globals_free( globals ); - globals = NULL; - } - } - - *aglobals = globals; - return error; - } - - - FT_LOCAL_DEF( void ) - af_face_globals_free( AF_FaceGlobals globals ) - { - if ( globals ) - { - FT_Memory memory = globals->face->memory; - FT_UInt nn; - - - for ( nn = 0; nn < AF_SCRIPT_MAX; nn++ ) - { - if ( globals->metrics[nn] ) - { - AF_ScriptClass clazz = AF_SCRIPT_CLASSES_GET[nn]; - - - FT_ASSERT( globals->metrics[nn]->clazz == clazz ); - - if ( clazz->script_metrics_done ) - clazz->script_metrics_done( globals->metrics[nn] ); - - FT_FREE( globals->metrics[nn] ); - } - } - - globals->glyph_count = 0; - globals->glyph_scripts = NULL; /* no need to free this one! */ - globals->face = NULL; - - FT_FREE( globals ); - } - } - - - FT_LOCAL_DEF( FT_Error ) - af_face_globals_get_metrics( AF_FaceGlobals globals, - FT_UInt gindex, - FT_UInt options, - AF_ScriptMetrics *ametrics ) - { - AF_ScriptMetrics metrics = NULL; - FT_UInt gidx; - AF_ScriptClass clazz; - FT_UInt script = options & 15; - const FT_Offset script_max = sizeof ( AF_SCRIPT_CLASSES_GET ) / - sizeof ( AF_SCRIPT_CLASSES_GET[0] ); - FT_Error error = AF_Err_Ok; - - - if ( gindex >= (FT_ULong)globals->glyph_count ) - { - error = AF_Err_Invalid_Argument; - goto Exit; - } - - gidx = script; - if ( gidx == 0 || gidx + 1 >= script_max ) - gidx = globals->glyph_scripts[gindex] & AF_SCRIPT_LIST_NONE; - - clazz = AF_SCRIPT_CLASSES_GET[gidx]; - if ( script == 0 ) - script = clazz->script; - - metrics = globals->metrics[clazz->script]; - if ( metrics == NULL ) - { - /* create the global metrics object when needed */ - FT_Memory memory = globals->face->memory; - - - if ( FT_ALLOC( metrics, clazz->script_metrics_size ) ) - goto Exit; - - metrics->clazz = clazz; - - if ( clazz->script_metrics_init ) - { - error = clazz->script_metrics_init( metrics, globals->face ); - if ( error ) - { - if ( clazz->script_metrics_done ) - clazz->script_metrics_done( metrics ); - - FT_FREE( metrics ); - goto Exit; - } - } - - globals->metrics[clazz->script] = metrics; - } - - Exit: - *ametrics = metrics; - - return error; - } - - - FT_LOCAL_DEF( FT_Bool ) - af_face_globals_is_digit( AF_FaceGlobals globals, - FT_UInt gindex ) - { - if ( gindex < (FT_ULong)globals->glyph_count ) - return (FT_Bool)( globals->glyph_scripts[gindex] & AF_DIGIT ); - - return (FT_Bool)0; - } - - -/* END */