--- a/misc/libfreetype/src/autofit/afglobal.c Tue Jul 16 11:14:27 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 */