diff options
Diffstat (limited to 'src/3rdparty/freetype/src/autofit/afglobal.c')
| -rw-r--r-- | src/3rdparty/freetype/src/autofit/afglobal.c | 406 |
1 files changed, 275 insertions, 131 deletions
diff --git a/src/3rdparty/freetype/src/autofit/afglobal.c b/src/3rdparty/freetype/src/autofit/afglobal.c index ac293619d3..a54c20c023 100644 --- a/src/3rdparty/freetype/src/autofit/afglobal.c +++ b/src/3rdparty/freetype/src/autofit/afglobal.c @@ -4,7 +4,7 @@ /* */ /* Auto-fitter routines to compute global hinting values (body). */ /* */ -/* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 by */ +/* Copyright 2003-2014 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -17,133 +17,215 @@ #include "afglobal.h" -#include "afdummy.h" -#include "aflatin.h" -#include "afcjk.h" -#include "afindic.h" -#include "afpic.h" +#include "afranges.h" +#include "hbshim.h" +#include FT_INTERNAL_DEBUG_H + + + /*************************************************************************/ + /* */ + /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ + /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ + /* messages during execution. */ + /* */ +#undef FT_COMPONENT +#define FT_COMPONENT trace_afglobal + + + /* get writing system specific header files */ +#undef WRITING_SYSTEM +#define WRITING_SYSTEM( ws, WS ) /* empty */ +#include "afwrtsys.h" #include "aferrors.h" +#include "afpic.h" + + +#undef SCRIPT +#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \ + AF_DEFINE_SCRIPT_CLASS( \ + af_ ## s ## _script_class, \ + AF_SCRIPT_ ## S, \ + af_ ## s ## _uniranges, \ + sc1, sc2, sc3 ) + +#include "afscript.h" + + +#undef STYLE +#define STYLE( s, S, d, ws, sc, ss, c ) \ + AF_DEFINE_STYLE_CLASS( \ + af_ ## s ## _style_class, \ + AF_STYLE_ ## S, \ + ws, \ + sc, \ + ss, \ + c ) + +#include "afstyles.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 */ +#undef WRITING_SYSTEM +#define WRITING_SYSTEM( ws, WS ) \ + &af_ ## ws ## _writing_system_class, - /* populate this list when you add new scripts */ - static AF_ScriptClass const af_script_classes[] = + FT_LOCAL_ARRAY_DEF( AF_WritingSystemClass ) + af_writing_system_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, + +#include "afwrtsys.h" + 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 +#undef SCRIPT +#define SCRIPT( s, S, d, h, sc1, sc2, sc3 ) \ + &af_ ## s ## _script_class, + + FT_LOCAL_ARRAY_DEF( AF_ScriptClass ) + af_script_classes[] = + { + +#include "afscript.h" + + NULL /* do not remove */ + }; - /* - * Note that glyph_scripts[] is used to map each glyph into - * an index into the `af_script_classes' array. - * - */ - typedef struct AF_FaceGlobalsRec_ +#undef STYLE +#define STYLE( s, S, d, ws, sc, ss, c ) \ + &af_ ## s ## _style_class, + + FT_LOCAL_ARRAY_DEF( AF_StyleClass ) + af_style_classes[] = { - FT_Face face; - FT_Long glyph_count; /* same as face->num_glyphs */ - FT_Byte* glyph_scripts; - AF_ScriptMetrics metrics[AF_SCRIPT_MAX]; +#include "afstyles.h" + + NULL /* do not remove */ + }; + +#endif /* !FT_CONFIG_OPTION_PIC */ + - } AF_FaceGlobalsRec; +#ifdef FT_DEBUG_LEVEL_TRACE +#undef STYLE +#define STYLE( s, S, d, ws, sc, ss, c ) #s, + + FT_LOCAL_ARRAY_DEF( char* ) + af_style_names[] = + { + +#include "afstyles.h" + + }; - /* Compute the script index of each glyph within a given face. */ +#endif /* FT_DEBUG_LEVEL_TRACE */ + + + /* Compute the style index of each glyph within a given face. */ static FT_Error - af_face_globals_compute_script_coverage( AF_FaceGlobals globals ) + af_face_globals_compute_style_coverage( AF_FaceGlobals globals ) { - FT_Error error = AF_Err_Ok; + FT_Error error; FT_Face face = globals->face; FT_CharMap old_charmap = face->charmap; - FT_Byte* gscripts = globals->glyph_scripts; - FT_UInt ss, i; + FT_Byte* gstyles = globals->glyph_styles; + FT_UInt ss; + FT_UInt i; + FT_UInt dflt = ~0U; /* a non-valid value */ - /* the value 255 means `uncovered glyph' */ - FT_MEM_SET( globals->glyph_scripts, - AF_SCRIPT_LIST_NONE, + /* the value AF_STYLE_UNASSIGNED means `uncovered glyph' */ + FT_MEM_SET( globals->glyph_styles, + AF_STYLE_UNASSIGNED, 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; + /* + * Ignore this error; we simply use the fallback style. + * XXX: Shouldn't we rather disable hinting? + */ + error = FT_Err_Ok; goto Exit; } - /* scan each script in a Unicode charmap */ - for ( ss = 0; AF_SCRIPT_CLASSES_GET[ss]; ss++ ) + /* scan each style in a Unicode charmap */ + for ( ss = 0; AF_STYLE_CLASSES_GET[ss]; ss++ ) { - AF_ScriptClass clazz = AF_SCRIPT_CLASSES_GET[ss]; + AF_StyleClass style_class = + AF_STYLE_CLASSES_GET[ss]; + AF_ScriptClass script_class = + AF_SCRIPT_CLASSES_GET[style_class->script]; AF_Script_UniRange range; - if ( clazz->script_uni_ranges == NULL ) + if ( script_class->script_uni_ranges == NULL ) continue; /* - * Scan all unicode points in the range and set the corresponding - * glyph script index. + * Scan all Unicode points in the range and set the corresponding + * glyph style index. */ - for ( range = clazz->script_uni_ranges; range->first != 0; range++ ) + if ( style_class->coverage == AF_COVERAGE_DEFAULT ) { - FT_ULong charcode = range->first; - FT_UInt gindex; - + if ( (FT_UInt)style_class->script == + globals->module->default_script ) + dflt = ss; - gindex = FT_Get_Char_Index( face, charcode ); - - if ( gindex != 0 && - gindex < (FT_ULong)globals->glyph_count && - gscripts[gindex] == AF_SCRIPT_LIST_NONE ) + for ( range = script_class->script_uni_ranges; + range->first != 0; + range++ ) { - gscripts[gindex] = (FT_Byte)ss; - } + FT_ULong charcode = range->first; + FT_UInt gindex; - for (;;) - { - charcode = FT_Get_Next_Char( face, charcode, &gindex ); - if ( gindex == 0 || charcode > range->last ) - break; + gindex = FT_Get_Char_Index( face, charcode ); - if ( gindex < (FT_ULong)globals->glyph_count && - gscripts[gindex] == AF_SCRIPT_LIST_NONE ) + if ( gindex != 0 && + gindex < (FT_ULong)globals->glyph_count && + gstyles[gindex] == AF_STYLE_UNASSIGNED ) + gstyles[gindex] = (FT_Byte)ss; + + for (;;) { - gscripts[gindex] = (FT_Byte)ss; + charcode = FT_Get_Next_Char( face, charcode, &gindex ); + + if ( gindex == 0 || charcode > range->last ) + break; + + if ( gindex < (FT_ULong)globals->glyph_count && + gstyles[gindex] == AF_STYLE_UNASSIGNED ) + gstyles[gindex] = (FT_Byte)ss; } } } + else + { + /* get glyphs not directly addressable by cmap */ + af_get_coverage( globals, style_class, gstyles ); + } + } + + /* handle the default OpenType features of the default script ... */ + af_get_coverage( globals, AF_STYLE_CLASSES_GET[dflt], gstyles ); + + /* ... and the remaining default OpenType features */ + for ( ss = 0; AF_STYLE_CLASSES_GET[ss]; ss++ ) + { + AF_StyleClass style_class = AF_STYLE_CLASSES_GET[ss]; + + + if ( ss != dflt && style_class->coverage == AF_COVERAGE_DEFAULT ) + af_get_coverage( globals, style_class, gstyles ); } /* mark ASCII digits */ @@ -153,25 +235,68 @@ if ( gindex != 0 && gindex < (FT_ULong)globals->glyph_count ) - gscripts[gindex] |= AF_DIGIT; + gstyles[gindex] |= AF_DIGIT; } Exit: /* - * By default, all uncovered glyphs are set to the latin script. + * By default, all uncovered glyphs are set to the fallback style. * XXX: Shouldn't we disable hinting or do something similar? */ + if ( globals->module->fallback_style != AF_STYLE_UNASSIGNED ) { FT_Long nn; for ( nn = 0; nn < globals->glyph_count; nn++ ) { - if ( gscripts[nn] == AF_SCRIPT_LIST_NONE ) - gscripts[nn] = AF_SCRIPT_LIST_DEFAULT; + if ( ( gstyles[nn] & ~AF_DIGIT ) == AF_STYLE_UNASSIGNED ) + { + gstyles[nn] &= ~AF_STYLE_UNASSIGNED; + gstyles[nn] |= globals->module->fallback_style; + } + } + } + +#ifdef FT_DEBUG_LEVEL_TRACE + + FT_TRACE4(( "\n" + "style coverage\n" + "==============\n" + "\n" )); + + for ( ss = 0; AF_STYLE_CLASSES_GET[ss]; ss++ ) + { + AF_StyleClass style_class = AF_STYLE_CLASSES_GET[ss]; + FT_UInt count = 0; + FT_Long idx; + + + FT_TRACE4(( "%s:\n", af_style_names[style_class->style] )); + + for ( idx = 0; idx < globals->glyph_count; idx++ ) + { + if ( ( gstyles[idx] & ~AF_DIGIT ) == style_class->style ) + { + if ( !( count % 10 ) ) + FT_TRACE4(( " " )); + + FT_TRACE4(( " %d", idx )); + count++; + + if ( !( count % 10 ) ) + FT_TRACE4(( "\n" )); + } } + + if ( !count ) + FT_TRACE4(( " (none)\n" )); + if ( count % 10 ) + FT_TRACE4(( "\n" )); } +#endif /* FT_DEBUG_LEVEL_TRACE */ + FT_Set_Charmap( face, old_charmap ); return error; } @@ -179,30 +304,39 @@ FT_LOCAL_DEF( FT_Error ) af_face_globals_new( FT_Face face, - AF_FaceGlobals *aglobals ) + AF_FaceGlobals *aglobals, + AF_Module module ) { FT_Error error; FT_Memory memory; - AF_FaceGlobals globals; + 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 ); + if ( FT_ALLOC( globals, sizeof ( *globals ) + + face->num_glyphs * sizeof ( FT_Byte ) ) ) + goto Exit; - error = af_face_globals_compute_script_coverage( globals ); - if ( error ) - { - af_face_globals_free( globals ); - globals = NULL; - } + globals->face = face; + globals->glyph_count = face->num_glyphs; + globals->glyph_styles = (FT_Byte*)( globals + 1 ); + globals->module = module; + +#ifdef FT_CONFIG_OPTION_USE_HARFBUZZ + globals->hb_font = hb_ft_font_create( face, NULL ); +#endif + + error = af_face_globals_compute_style_coverage( globals ); + if ( error ) + { + af_face_globals_free( globals ); + globals = NULL; } + else + globals->increase_x_height = AF_PROP_INCREASE_X_HEIGHT_MAX; + Exit: *aglobals = globals; return error; } @@ -217,25 +351,31 @@ FT_UInt nn; - for ( nn = 0; nn < AF_SCRIPT_MAX; nn++ ) + for ( nn = 0; nn < AF_STYLE_MAX; nn++ ) { if ( globals->metrics[nn] ) { - AF_ScriptClass clazz = AF_SCRIPT_CLASSES_GET[nn]; + AF_StyleClass style_class = + AF_STYLE_CLASSES_GET[nn]; + AF_WritingSystemClass writing_system_class = + AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system]; - FT_ASSERT( globals->metrics[nn]->clazz == clazz ); - - if ( clazz->script_metrics_done ) - clazz->script_metrics_done( globals->metrics[nn] ); + if ( writing_system_class->style_metrics_done ) + writing_system_class->style_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; +#ifdef FT_CONFIG_OPTION_USE_HARFBUZZ + hb_font_destroy( globals->hb_font ); + globals->hb_font = NULL; +#endif + + globals->glyph_count = 0; + globals->glyph_styles = NULL; /* no need to free this one! */ + globals->face = NULL; FT_FREE( globals ); } @@ -243,60 +383,64 @@ FT_LOCAL_DEF( FT_Error ) - af_face_globals_get_metrics( AF_FaceGlobals globals, - FT_UInt gindex, - FT_UInt options, - AF_ScriptMetrics *ametrics ) + af_face_globals_get_metrics( AF_FaceGlobals globals, + FT_UInt gindex, + FT_UInt options, + AF_StyleMetrics *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; + AF_StyleMetrics metrics = NULL; + + AF_Style style = (AF_Style)options; + AF_WritingSystemClass writing_system_class; + AF_StyleClass style_class; + + FT_Error error = FT_Err_Ok; if ( gindex >= (FT_ULong)globals->glyph_count ) { - error = AF_Err_Invalid_Argument; + error = FT_THROW( Invalid_Argument ); goto Exit; } - gidx = script; - if ( gidx == 0 || gidx + 1 >= script_max ) - gidx = globals->glyph_scripts[gindex] & AF_SCRIPT_LIST_NONE; + /* if we have a forced style (via `options'), use it, */ + /* otherwise look into `glyph_styles' array */ + if ( style == AF_STYLE_NONE_DFLT || style + 1 >= AF_STYLE_MAX ) + style = (AF_Style)( globals->glyph_styles[gindex] & + AF_STYLE_UNASSIGNED ); - clazz = AF_SCRIPT_CLASSES_GET[gidx]; - if ( script == 0 ) - script = clazz->script; + style_class = AF_STYLE_CLASSES_GET[style]; + writing_system_class = AF_WRITING_SYSTEM_CLASSES_GET + [style_class->writing_system]; - metrics = globals->metrics[clazz->script]; + metrics = globals->metrics[style]; if ( metrics == NULL ) { - /* create the global metrics object when needed */ + /* create the global metrics object if necessary */ FT_Memory memory = globals->face->memory; - if ( FT_ALLOC( metrics, clazz->script_metrics_size ) ) + if ( FT_ALLOC( metrics, writing_system_class->style_metrics_size ) ) goto Exit; - metrics->clazz = clazz; + metrics->style_class = style_class; + metrics->globals = globals; - if ( clazz->script_metrics_init ) + if ( writing_system_class->style_metrics_init ) { - error = clazz->script_metrics_init( metrics, globals->face ); + error = writing_system_class->style_metrics_init( metrics, + globals->face ); if ( error ) { - if ( clazz->script_metrics_done ) - clazz->script_metrics_done( metrics ); + if ( writing_system_class->style_metrics_done ) + writing_system_class->style_metrics_done( metrics ); FT_FREE( metrics ); goto Exit; } } - globals->metrics[clazz->script] = metrics; + globals->metrics[style] = metrics; } Exit: @@ -311,7 +455,7 @@ FT_UInt gindex ) { if ( gindex < (FT_ULong)globals->glyph_count ) - return (FT_Bool)( globals->glyph_scripts[gindex] & AF_DIGIT ); + return (FT_Bool)( globals->glyph_styles[gindex] & AF_DIGIT ); return (FT_Bool)0; } |