169 lines
5.0 KiB
C
169 lines
5.0 KiB
C
/***************************************************************************/
|
|
/* */
|
|
/* afindic.c */
|
|
/* */
|
|
/* Auto-fitter hinting routines for Indic scripts (body). */
|
|
/* */
|
|
/* Copyright 2007, 2011-2013 by */
|
|
/* Rahul Bhalerao <rahul.bhalerao@redhat.com>, <b.rahul.pm@gmail.com>. */
|
|
/* */
|
|
/* 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 "aftypes.h"
|
|
#include "aflatin.h"
|
|
|
|
|
|
#ifdef AF_CONFIG_OPTION_INDIC
|
|
|
|
#include "afindic.h"
|
|
#include "aferrors.h"
|
|
#include "afcjk.h"
|
|
|
|
|
|
#ifdef AF_CONFIG_OPTION_USE_WARPER
|
|
#include "afwarp.h"
|
|
#endif
|
|
|
|
|
|
static FT_Error
|
|
af_indic_metrics_init( AF_CJKMetrics metrics,
|
|
FT_Face face )
|
|
{
|
|
/* skip blue zone init in CJK routines */
|
|
FT_CharMap oldmap = face->charmap;
|
|
|
|
|
|
metrics->units_per_em = face->units_per_EM;
|
|
|
|
if ( FT_Select_Charmap( face, FT_ENCODING_UNICODE ) )
|
|
face->charmap = NULL;
|
|
else
|
|
{
|
|
af_cjk_metrics_init_widths( metrics, face );
|
|
#if 0
|
|
/* either need indic specific blue_chars[] or just skip blue zones */
|
|
af_cjk_metrics_init_blues( metrics, face, af_cjk_blue_chars );
|
|
#endif
|
|
af_cjk_metrics_check_digits( metrics, face );
|
|
}
|
|
|
|
FT_Set_Charmap( face, oldmap );
|
|
|
|
return FT_Err_Ok;
|
|
}
|
|
|
|
|
|
static void
|
|
af_indic_metrics_scale( AF_CJKMetrics metrics,
|
|
AF_Scaler scaler )
|
|
{
|
|
/* use CJK routines */
|
|
af_cjk_metrics_scale( metrics, scaler );
|
|
}
|
|
|
|
|
|
static FT_Error
|
|
af_indic_hints_init( AF_GlyphHints hints,
|
|
AF_CJKMetrics metrics )
|
|
{
|
|
/* use CJK routines */
|
|
return af_cjk_hints_init( hints, metrics );
|
|
}
|
|
|
|
|
|
static FT_Error
|
|
af_indic_hints_apply( AF_GlyphHints hints,
|
|
FT_Outline* outline,
|
|
AF_CJKMetrics metrics )
|
|
{
|
|
/* use CJK routines */
|
|
return af_cjk_hints_apply( hints, outline, metrics );
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
/***** *****/
|
|
/***** I N D I C S C R I P T C L A S S *****/
|
|
/***** *****/
|
|
/*************************************************************************/
|
|
/*************************************************************************/
|
|
|
|
|
|
AF_DEFINE_WRITING_SYSTEM_CLASS(
|
|
af_indic_writing_system_class,
|
|
|
|
AF_WRITING_SYSTEM_INDIC,
|
|
|
|
sizeof ( AF_CJKMetricsRec ),
|
|
|
|
(AF_Script_InitMetricsFunc) af_indic_metrics_init,
|
|
(AF_Script_ScaleMetricsFunc)af_indic_metrics_scale,
|
|
(AF_Script_DoneMetricsFunc) NULL,
|
|
|
|
(AF_Script_InitHintsFunc) af_indic_hints_init,
|
|
(AF_Script_ApplyHintsFunc) af_indic_hints_apply
|
|
)
|
|
|
|
/* XXX: this should probably fine tuned to differentiate better between */
|
|
/* scripts... */
|
|
|
|
static const AF_Script_UniRangeRec af_deva_uniranges[] =
|
|
{
|
|
AF_UNIRANGE_REC( 0x0900UL, 0x0DFFUL ), /* Indic Range */
|
|
AF_UNIRANGE_REC( 0x0F00UL, 0x0FFFUL ), /* Tibetan */
|
|
AF_UNIRANGE_REC( 0x1900UL, 0x194FUL ), /* Limbu */
|
|
AF_UNIRANGE_REC( 0x1B80UL, 0x1BBFUL ), /* Sundanese */
|
|
AF_UNIRANGE_REC( 0x1C80UL, 0x1CDFUL ), /* Meetei Mayak */
|
|
AF_UNIRANGE_REC( 0xA800UL, 0xA82FUL ), /* Syloti Nagri */
|
|
AF_UNIRANGE_REC( 0x11800UL, 0x118DFUL ), /* Sharada */
|
|
AF_UNIRANGE_REC( 0UL, 0UL )
|
|
};
|
|
|
|
|
|
#else /* !AF_CONFIG_OPTION_INDIC */
|
|
|
|
AF_DEFINE_WRITING_SYSTEM_CLASS(
|
|
af_indic_writing_system_class,
|
|
|
|
AF_WRITING_SYSTEM_INDIC,
|
|
|
|
sizeof ( AF_CJKMetricsRec ),
|
|
|
|
(AF_Script_InitMetricsFunc) NULL,
|
|
(AF_Script_ScaleMetricsFunc)NULL,
|
|
(AF_Script_DoneMetricsFunc) NULL,
|
|
|
|
(AF_Script_InitHintsFunc) NULL,
|
|
(AF_Script_ApplyHintsFunc) NULL
|
|
)
|
|
|
|
|
|
static const AF_Script_UniRangeRec af_deva_uniranges[] =
|
|
{
|
|
AF_UNIRANGE_REC( 0UL, 0UL )
|
|
};
|
|
|
|
#endif /* !AF_CONFIG_OPTION_INDIC */
|
|
|
|
|
|
AF_DEFINE_SCRIPT_CLASS(
|
|
af_deva_script_class,
|
|
|
|
AF_SCRIPT_DEVA,
|
|
AF_WRITING_SYSTEM_INDIC,
|
|
|
|
af_deva_uniranges,
|
|
'o' /* XXX */
|
|
)
|
|
|
|
|
|
/* END */
|