diff options
Diffstat (limited to 'modules/freetype2/src/autofit/afindic.c')
| -rw-r--r-- | modules/freetype2/src/autofit/afindic.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/modules/freetype2/src/autofit/afindic.c b/modules/freetype2/src/autofit/afindic.c new file mode 100644 index 0000000000..289a09d71d --- /dev/null +++ b/modules/freetype2/src/autofit/afindic.c @@ -0,0 +1,151 @@ +/**************************************************************************** + * + * afindic.c + * + * Auto-fitter hinting routines for Indic writing system (body). + * + * Copyright (C) 2007-2023 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" +#include "afcjk.h" + + +#ifdef AF_CONFIG_OPTION_INDIC + +#include "afindic.h" +#include "aferrors.h" + + + 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 ); + } + + face->charmap = 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( FT_UInt glyph_index, + AF_GlyphHints hints, + FT_Outline* outline, + AF_CJKMetrics metrics ) + { + /* use CJK routines */ + return af_cjk_hints_apply( glyph_index, hints, outline, metrics ); + } + + + /* Extract standard_width from writing system/script specific */ + /* metrics class. */ + + static void + af_indic_get_standard_widths( AF_CJKMetrics metrics, + FT_Pos* stdHW, + FT_Pos* stdVW ) + { + if ( stdHW ) + *stdHW = metrics->axis[AF_DIMENSION_VERT].standard_width; + + if ( stdVW ) + *stdVW = metrics->axis[AF_DIMENSION_HORZ].standard_width; + } + + + /*************************************************************************/ + /*************************************************************************/ + /***** *****/ + /***** 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_WritingSystem_InitMetricsFunc) af_indic_metrics_init, /* style_metrics_init */ + (AF_WritingSystem_ScaleMetricsFunc)af_indic_metrics_scale, /* style_metrics_scale */ + (AF_WritingSystem_DoneMetricsFunc) NULL, /* style_metrics_done */ + (AF_WritingSystem_GetStdWidthsFunc)af_indic_get_standard_widths, /* style_metrics_getstdw */ + + (AF_WritingSystem_InitHintsFunc) af_indic_hints_init, /* style_hints_init */ + (AF_WritingSystem_ApplyHintsFunc) af_indic_hints_apply /* style_hints_apply */ + ) + + +#else /* !AF_CONFIG_OPTION_INDIC */ + + + AF_DEFINE_WRITING_SYSTEM_CLASS( + af_indic_writing_system_class, + + AF_WRITING_SYSTEM_INDIC, + + sizeof ( AF_CJKMetricsRec ), + + (AF_WritingSystem_InitMetricsFunc) NULL, /* style_metrics_init */ + (AF_WritingSystem_ScaleMetricsFunc)NULL, /* style_metrics_scale */ + (AF_WritingSystem_DoneMetricsFunc) NULL, /* style_metrics_done */ + (AF_WritingSystem_GetStdWidthsFunc)NULL, /* style_metrics_getstdw */ + + (AF_WritingSystem_InitHintsFunc) NULL, /* style_hints_init */ + (AF_WritingSystem_ApplyHintsFunc) NULL /* style_hints_apply */ + ) + + +#endif /* !AF_CONFIG_OPTION_INDIC */ + + +/* END */ |