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54876
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/****************************************************************************
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*
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* afindic.c
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*
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* Auto-fitter hinting routines for Indic writing system (body).
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*
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* Copyright (C) 2007-2019 by
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* Rahul Bhalerao <rahul.bhalerao@redhat.com>, <b.rahul.pm@gmail.com>.
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*
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* This file is part of the FreeType project, and may only be used,
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* modified, and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify, or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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*/
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49234
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#include "aftypes.h"
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#include "aflatin.h"
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#include "afcjk.h"
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#ifdef AF_CONFIG_OPTION_INDIC
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#include "afindic.h"
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#include "aferrors.h"
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#ifdef AF_CONFIG_OPTION_USE_WARPER
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#include "afwarp.h"
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#endif
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static FT_Error
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af_indic_metrics_init( AF_CJKMetrics metrics,
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FT_Face face )
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{
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/* skip blue zone init in CJK routines */
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FT_CharMap oldmap = face->charmap;
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metrics->units_per_em = face->units_per_EM;
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if ( FT_Select_Charmap( face, FT_ENCODING_UNICODE ) )
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face->charmap = NULL;
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else
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{
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af_cjk_metrics_init_widths( metrics, face );
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#if 0
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/* either need indic specific blue_chars[] or just skip blue zones */
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af_cjk_metrics_init_blues( metrics, face, af_cjk_blue_chars );
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#endif
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af_cjk_metrics_check_digits( metrics, face );
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}
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FT_Set_Charmap( face, oldmap );
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return FT_Err_Ok;
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}
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static void
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af_indic_metrics_scale( AF_CJKMetrics metrics,
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AF_Scaler scaler )
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{
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/* use CJK routines */
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af_cjk_metrics_scale( metrics, scaler );
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}
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static FT_Error
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af_indic_hints_init( AF_GlyphHints hints,
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AF_CJKMetrics metrics )
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{
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/* use CJK routines */
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return af_cjk_hints_init( hints, metrics );
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}
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static FT_Error
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af_indic_hints_apply( FT_UInt glyph_index,
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AF_GlyphHints hints,
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FT_Outline* outline,
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AF_CJKMetrics metrics )
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{
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/* use CJK routines */
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return af_cjk_hints_apply( glyph_index, hints, outline, metrics );
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}
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/* Extract standard_width from writing system/script specific */
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/* metrics class. */
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static void
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af_indic_get_standard_widths( AF_CJKMetrics metrics,
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FT_Pos* stdHW,
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FT_Pos* stdVW )
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{
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if ( stdHW )
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*stdHW = metrics->axis[AF_DIMENSION_VERT].standard_width;
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if ( stdVW )
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*stdVW = metrics->axis[AF_DIMENSION_HORZ].standard_width;
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}
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/*************************************************************************/
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/*************************************************************************/
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/***** *****/
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/***** I N D I C S C R I P T C L A S S *****/
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/***** *****/
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/*************************************************************************/
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/*************************************************************************/
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AF_DEFINE_WRITING_SYSTEM_CLASS(
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af_indic_writing_system_class,
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AF_WRITING_SYSTEM_INDIC,
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sizeof ( AF_CJKMetricsRec ),
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(AF_WritingSystem_InitMetricsFunc) af_indic_metrics_init, /* style_metrics_init */
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(AF_WritingSystem_ScaleMetricsFunc)af_indic_metrics_scale, /* style_metrics_scale */
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(AF_WritingSystem_DoneMetricsFunc) NULL, /* style_metrics_done */
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(AF_WritingSystem_GetStdWidthsFunc)af_indic_get_standard_widths, /* style_metrics_getstdw */
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(AF_WritingSystem_InitHintsFunc) af_indic_hints_init, /* style_hints_init */
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(AF_WritingSystem_ApplyHintsFunc) af_indic_hints_apply /* style_hints_apply */
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)
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#else /* !AF_CONFIG_OPTION_INDIC */
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AF_DEFINE_WRITING_SYSTEM_CLASS(
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af_indic_writing_system_class,
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AF_WRITING_SYSTEM_INDIC,
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sizeof ( AF_CJKMetricsRec ),
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(AF_WritingSystem_InitMetricsFunc) NULL, /* style_metrics_init */
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(AF_WritingSystem_ScaleMetricsFunc)NULL, /* style_metrics_scale */
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(AF_WritingSystem_DoneMetricsFunc) NULL, /* style_metrics_done */
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(AF_WritingSystem_GetStdWidthsFunc)NULL, /* style_metrics_getstdw */
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(AF_WritingSystem_InitHintsFunc) NULL, /* style_hints_init */
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(AF_WritingSystem_ApplyHintsFunc) NULL /* style_hints_apply */
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)
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#endif /* !AF_CONFIG_OPTION_INDIC */
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/* END */
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