af_loader_load_glyph( AF_Loader loader, FT_Face face, FT_UInt gindex, FT_UInt32 load_flags ) { FT_Error error; FT_Size size = face->size; AF_ScalerRec scaler; if ( !size ) return AF_Err_Invalid_Argument; FT_ZERO( &scaler ); scaler.face = face; scaler.x_scale = size->metrics.x_scale; scaler.x_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.y_scale = size->metrics.y_scale; scaler.y_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); scaler.flags = 0; /* XXX: fix this */ error = af_loader_reset( loader, face ); if ( !error ) { AF_ScriptMetrics metrics; error = af_face_globals_get_metrics( loader->globals, gindex, &metrics ); if ( !error ) { loader->metrics = metrics; if ( metrics->clazz->script_metrics_scale ) metrics->clazz->script_metrics_scale( metrics, &scaler ); else metrics->scaler = scaler; load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM; load_flags &= ~FT_LOAD_RENDER; error = metrics->clazz->script_hints_init( &loader->hints, metrics ); if ( error ) goto Exit; error = af_loader_load_g( loader, &scaler, gindex, load_flags, 0 ); } } Exit: return error; }
T1_Load_Glyph( FT_GlyphSlot t1glyph, /* T1_GlyphSlot */ FT_Size t1size, /* T1_Size */ FT_UInt glyph_index, FT_Int32 load_flags ) { T1_GlyphSlot glyph = (T1_GlyphSlot)t1glyph; FT_Error error; #ifdef __REACTOS__ T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec)); if (!decoder) return FT_THROW( Out_Of_Memory ); /* Ugly but it allows us to reduce the diff */ #define decoder (*decoder) { #else T1_DecoderRec decoder; #endif T1_Face face = (T1_Face)t1glyph->face; FT_Bool hinting; FT_Bool scaled; FT_Bool force_scaling = FALSE; T1_Font type1 = &face->type1; PSAux_Service psaux = (PSAux_Service)face->psaux; const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs; FT_Matrix font_matrix; FT_Vector font_offset; FT_Data glyph_data; FT_Bool must_finish_decoder = FALSE; #ifdef FT_CONFIG_OPTION_INCREMENTAL FT_Bool glyph_data_loaded = 0; #endif #ifdef FT_CONFIG_OPTION_INCREMENTAL if ( glyph_index >= (FT_UInt)face->root.num_glyphs && !face->root.internal->incremental_interface ) #else if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) #endif /* FT_CONFIG_OPTION_INCREMENTAL */ { error = FT_THROW( Invalid_Argument ); goto Exit; } FT_TRACE1(( "T1_Load_Glyph: glyph index %d\n", glyph_index )); FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) ); if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; if ( t1size ) { glyph->x_scale = t1size->metrics.x_scale; glyph->y_scale = t1size->metrics.y_scale; } else { glyph->x_scale = 0x10000L; glyph->y_scale = 0x10000L; } t1glyph->outline.n_points = 0; t1glyph->outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); scaled = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ); glyph->hint = hinting; glyph->scaled = scaled; t1glyph->format = FT_GLYPH_FORMAT_OUTLINE; error = decoder_funcs->init( &decoder, t1glyph->face, t1size, t1glyph, (FT_Byte**)type1->glyph_names, face->blend, FT_BOOL( hinting ), FT_LOAD_TARGET_MODE( load_flags ), T1_Parse_Glyph ); if ( error ) goto Exit; must_finish_decoder = TRUE; decoder.builder.no_recurse = FT_BOOL( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ); decoder.num_subrs = type1->num_subrs; decoder.subrs = type1->subrs; decoder.subrs_len = type1->subrs_len; decoder.subrs_hash = type1->subrs_hash; decoder.buildchar = face->buildchar; decoder.len_buildchar = face->len_buildchar; /* now load the unscaled outline */ error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index, &glyph_data, &force_scaling ); if ( error ) goto Exit; #ifdef FT_CONFIG_OPTION_INCREMENTAL glyph_data_loaded = 1; #endif hinting = glyph->hint; font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ decoder_funcs->done( &decoder ); must_finish_decoder = FALSE; /* now, set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ if ( !error ) { t1glyph->outline.flags &= FT_OUTLINE_OWNER; t1glyph->outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = t1glyph->internal; t1glyph->metrics.horiBearingX = FIXED_TO_INT( decoder.builder.left_bearing.x ); t1glyph->metrics.horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &t1glyph->metrics; /* copy the _unscaled_ advance width */ metrics->horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); t1glyph->linearHoriAdvance = FIXED_TO_INT( decoder.builder.advance.x ); t1glyph->internal->glyph_transformed = 0; if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) { /* make up vertical ones */ metrics->vertAdvance = ( face->type1.font_bbox.yMax - face->type1.font_bbox.yMin ) >> 16; t1glyph->linearVertAdvance = metrics->vertAdvance; } else { metrics->vertAdvance = FIXED_TO_INT( decoder.builder.advance.y ); t1glyph->linearVertAdvance = FIXED_TO_INT( decoder.builder.advance.y ); } t1glyph->format = FT_GLYPH_FORMAT_OUTLINE; if ( t1size && t1size->metrics.y_ppem < 24 ) t1glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION; #if 1 /* apply the font matrix, if any */ if ( font_matrix.xx != 0x10000L || font_matrix.yy != 0x10000L || font_matrix.xy != 0 || font_matrix.yx != 0 ) { FT_Outline_Transform( &t1glyph->outline, &font_matrix ); metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, font_matrix.xx ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, font_matrix.yy ); } if ( font_offset.x || font_offset.y ) { FT_Outline_Translate( &t1glyph->outline, font_offset.x, font_offset.y ); metrics->horiAdvance += font_offset.x; metrics->vertAdvance += font_offset.y; } #endif if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 || force_scaling ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = decoder.builder.base; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points, if we are not hinting */ if ( !hinting || ! decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); } /* compute the other metrics */ FT_Outline_Get_CBox( &t1glyph->outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) { /* make up vertical ones */ ft_synthesize_vertical_metrics( metrics, metrics->vertAdvance ); } }
T1_Load_Glyph( FT_GlyphSlot t1glyph, /* T1_GlyphSlot */ FT_Size t1size, /* T1_Size */ FT_UInt glyph_index, FT_Int32 load_flags ) { T1_GlyphSlot glyph = (T1_GlyphSlot)t1glyph; FT_Error error; #ifdef __REACTOS__ T1_DecoderRec *decoder = malloc(sizeof(T1_DecoderRec)); /* Ugly but it allows us to reduce the diff */ #define decoder (*decoder) #else T1_DecoderRec decoder; #endif T1_Face face = (T1_Face)t1glyph->face; FT_Bool hinting; T1_Font type1 = &face->type1; PSAux_Service psaux = (PSAux_Service)face->psaux; const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs; FT_Matrix font_matrix; FT_Vector font_offset; FT_Data glyph_data; FT_Bool must_finish_decoder = FALSE; #ifdef FT_CONFIG_OPTION_INCREMENTAL FT_Bool glyph_data_loaded = 0; #endif #ifdef FT_CONFIG_OPTION_INCREMENTAL if ( glyph_index >= (FT_UInt)face->root.num_glyphs && !face->root.internal->incremental_interface ) #else if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) #endif /* FT_CONFIG_OPTION_INCREMENTAL */ { error = FT_THROW( Invalid_Argument ); goto Exit; } FT_TRACE1(( "T1_Load_Glyph: glyph index %d\n", glyph_index )); FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) ); if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; if ( t1size ) { glyph->x_scale = t1size->metrics.x_scale; glyph->y_scale = t1size->metrics.y_scale; } else { glyph->x_scale = 0x10000L; glyph->y_scale = 0x10000L; } t1glyph->outline.n_points = 0; t1glyph->outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); t1glyph->format = FT_GLYPH_FORMAT_OUTLINE; error = decoder_funcs->init( &decoder, t1glyph->face, t1size, t1glyph, (FT_Byte**)type1->glyph_names, face->blend, FT_BOOL( hinting ), FT_LOAD_TARGET_MODE( load_flags ), T1_Parse_Glyph ); if ( error ) goto Exit; must_finish_decoder = TRUE; decoder.builder.no_recurse = FT_BOOL( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ); decoder.num_subrs = type1->num_subrs; decoder.subrs = type1->subrs; decoder.subrs_len = type1->subrs_len; decoder.buildchar = face->buildchar; decoder.len_buildchar = face->len_buildchar; /* now load the unscaled outline */ error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index, &glyph_data ); if ( error ) goto Exit; #ifdef FT_CONFIG_OPTION_INCREMENTAL glyph_data_loaded = 1; #endif font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ decoder_funcs->done( &decoder ); must_finish_decoder = FALSE; /* now, set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ if ( !error ) { t1glyph->outline.flags &= FT_OUTLINE_OWNER; t1glyph->outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = t1glyph->internal; t1glyph->metrics.horiBearingX = FIXED_TO_INT( decoder.builder.left_bearing.x ); t1glyph->metrics.horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &t1glyph->metrics; /* copy the _unscaled_ advance width */ metrics->horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); t1glyph->linearHoriAdvance = FIXED_TO_INT( decoder.builder.advance.x ); t1glyph->internal->glyph_transformed = 0; if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) { /* make up vertical ones */ metrics->vertAdvance = ( face->type1.font_bbox.yMax - face->type1.font_bbox.yMin ) >> 16; t1glyph->linearVertAdvance = metrics->vertAdvance; } else {
cff_slot_load( CFF_GlyphSlot glyph, CFF_Size size, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; CFF_Decoder decoder; PS_Decoder psdecoder; TT_Face face = (TT_Face)glyph->root.face; FT_Bool hinting, scaled, force_scaling; CFF_Font cff = (CFF_Font)face->extra.data; PSAux_Service psaux = (PSAux_Service)face->psaux; const CFF_Decoder_Funcs decoder_funcs = psaux->cff_decoder_funcs; FT_Matrix font_matrix; FT_Vector font_offset; force_scaling = FALSE; /* in a CID-keyed font, consider `glyph_index' as a CID and map */ /* it immediately to the real glyph_index -- if it isn't a */ /* subsetted font, glyph_indices and CIDs are identical, though */ if ( cff->top_font.font_dict.cid_registry != 0xFFFFU && cff->charset.cids ) { /* don't handle CID 0 (.notdef) which is directly mapped to GID 0 */ if ( glyph_index != 0 ) { glyph_index = cff_charset_cid_to_gindex( &cff->charset, glyph_index ); if ( glyph_index == 0 ) return FT_THROW( Invalid_Argument ); } } else if ( glyph_index >= cff->num_glyphs ) return FT_THROW( Invalid_Argument ); if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; glyph->x_scale = 0x10000L; glyph->y_scale = 0x10000L; if ( size ) { glyph->x_scale = size->root.metrics.x_scale; glyph->y_scale = size->root.metrics.y_scale; } #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS /* try to load embedded bitmap if any */ /* */ /* XXX: The convention should be emphasized in */ /* the documents because it can be confusing. */ if ( size ) { CFF_Face cff_face = (CFF_Face)size->root.face; SFNT_Service sfnt = (SFNT_Service)cff_face->sfnt; FT_Stream stream = cff_face->root.stream; if ( size->strike_index != 0xFFFFFFFFUL && sfnt->load_eblc && ( load_flags & FT_LOAD_NO_BITMAP ) == 0 ) { TT_SBit_MetricsRec metrics; error = sfnt->load_sbit_image( face, size->strike_index, glyph_index, (FT_UInt)load_flags, stream, &glyph->root.bitmap, &metrics ); if ( !error ) { FT_Bool has_vertical_info; FT_UShort advance; FT_Short dummy; glyph->root.outline.n_points = 0; glyph->root.outline.n_contours = 0; glyph->root.metrics.width = (FT_Pos)metrics.width << 6; glyph->root.metrics.height = (FT_Pos)metrics.height << 6; glyph->root.metrics.horiBearingX = (FT_Pos)metrics.horiBearingX << 6; glyph->root.metrics.horiBearingY = (FT_Pos)metrics.horiBearingY << 6; glyph->root.metrics.horiAdvance = (FT_Pos)metrics.horiAdvance << 6; glyph->root.metrics.vertBearingX = (FT_Pos)metrics.vertBearingX << 6; glyph->root.metrics.vertBearingY = (FT_Pos)metrics.vertBearingY << 6; glyph->root.metrics.vertAdvance = (FT_Pos)metrics.vertAdvance << 6; glyph->root.format = FT_GLYPH_FORMAT_BITMAP; if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) { glyph->root.bitmap_left = metrics.vertBearingX; glyph->root.bitmap_top = metrics.vertBearingY; } else { glyph->root.bitmap_left = metrics.horiBearingX; glyph->root.bitmap_top = metrics.horiBearingY; } /* compute linear advance widths */ (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 0, glyph_index, &dummy, &advance ); glyph->root.linearHoriAdvance = advance; has_vertical_info = FT_BOOL( face->vertical_info && face->vertical.number_Of_VMetrics > 0 ); /* get the vertical metrics from the vmtx table if we have one */ if ( has_vertical_info ) { (void)( (SFNT_Service)face->sfnt )->get_metrics( face, 1, glyph_index, &dummy, &advance ); glyph->root.linearVertAdvance = advance; } else { /* make up vertical ones */ if ( face->os2.version != 0xFFFFU ) glyph->root.linearVertAdvance = (FT_Pos) ( face->os2.sTypoAscender - face->os2.sTypoDescender ); else glyph->root.linearVertAdvance = (FT_Pos) ( face->horizontal.Ascender - face->horizontal.Descender ); } return error; } } } #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ /* return immediately if we only want the embedded bitmaps */ if ( load_flags & FT_LOAD_SBITS_ONLY ) return FT_THROW( Invalid_Argument ); /* if we have a CID subfont, use its matrix (which has already */ /* been multiplied with the root matrix) */ /* this scaling is only relevant if the PS hinter isn't active */ if ( cff->num_subfonts ) { FT_Long top_upm, sub_upm; FT_Byte fd_index = cff_fd_select_get( &cff->fd_select, glyph_index ); if ( fd_index >= cff->num_subfonts ) fd_index = (FT_Byte)( cff->num_subfonts - 1 ); top_upm = (FT_Long)cff->top_font.font_dict.units_per_em; sub_upm = (FT_Long)cff->subfonts[fd_index]->font_dict.units_per_em; font_matrix = cff->subfonts[fd_index]->font_dict.font_matrix; font_offset = cff->subfonts[fd_index]->font_dict.font_offset; if ( top_upm != sub_upm ) { glyph->x_scale = FT_MulDiv( glyph->x_scale, top_upm, sub_upm ); glyph->y_scale = FT_MulDiv( glyph->y_scale, top_upm, sub_upm ); force_scaling = TRUE; } } else { font_matrix = cff->top_font.font_dict.font_matrix; font_offset = cff->top_font.font_dict.font_offset; } glyph->root.outline.n_points = 0; glyph->root.outline.n_contours = 0; /* top-level code ensures that FT_LOAD_NO_HINTING is set */ /* if FT_LOAD_NO_SCALE is active */ hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); scaled = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ); glyph->hint = hinting; glyph->scaled = scaled; glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; /* by default */ { #ifdef CFF_CONFIG_OPTION_OLD_ENGINE PS_Driver driver = (PS_Driver)FT_FACE_DRIVER( face ); #endif FT_Byte* charstring; FT_ULong charstring_len; decoder_funcs->init( &decoder, face, size, glyph, hinting, FT_LOAD_TARGET_MODE( load_flags ), cff_get_glyph_data, cff_free_glyph_data ); /* this is for pure CFFs */ if ( load_flags & FT_LOAD_ADVANCE_ONLY ) decoder.width_only = TRUE; decoder.builder.no_recurse = (FT_Bool)( load_flags & FT_LOAD_NO_RECURSE ); /* now load the unscaled outline */ error = cff_get_glyph_data( face, glyph_index, &charstring, &charstring_len ); if ( error ) goto Glyph_Build_Finished; error = decoder_funcs->prepare( &decoder, size, glyph_index ); if ( error ) goto Glyph_Build_Finished; #ifdef CFF_CONFIG_OPTION_OLD_ENGINE /* choose which CFF renderer to use */ if ( driver->hinting_engine == FT_HINTING_FREETYPE ) error = decoder_funcs->parse_charstrings_old( &decoder, charstring, charstring_len, 0 ); else #endif { psaux->ps_decoder_init( &psdecoder, &decoder, FALSE ); error = decoder_funcs->parse_charstrings( &psdecoder, charstring, charstring_len ); /* Adobe's engine uses 16.16 numbers everywhere; */ /* as a consequence, glyphs larger than 2000ppem get rejected */ if ( FT_ERR_EQ( error, Glyph_Too_Big ) ) { /* this time, we retry unhinted and scale up the glyph later on */ /* (the engine uses and sets the hardcoded value 0x10000 / 64 = */ /* 0x400 for both `x_scale' and `y_scale' in this case) */ hinting = FALSE; force_scaling = TRUE; glyph->hint = hinting; error = decoder_funcs->parse_charstrings( &psdecoder, charstring, charstring_len ); } } cff_free_glyph_data( face, &charstring, charstring_len ); if ( error ) goto Glyph_Build_Finished; #ifdef FT_CONFIG_OPTION_INCREMENTAL /* Control data and length may not be available for incremental */ /* fonts. */ if ( face->root.internal->incremental_interface ) { glyph->root.control_data = NULL; glyph->root.control_len = 0; } else #endif /* FT_CONFIG_OPTION_INCREMENTAL */ /* We set control_data and control_len if charstrings is loaded. */ /* See how charstring loads at cff_index_access_element() in */ /* cffload.c. */ { CFF_Index csindex = &cff->charstrings_index; if ( csindex->offsets ) { glyph->root.control_data = csindex->bytes + csindex->offsets[glyph_index] - 1; glyph->root.control_len = (FT_Long)charstring_len; } } Glyph_Build_Finished: /* save new glyph tables, if no error */ if ( !error ) decoder.builder.funcs.done( &decoder.builder ); /* XXX: anything to do for broken glyph entry? */ } #ifdef FT_CONFIG_OPTION_INCREMENTAL /* Incremental fonts can optionally override the metrics. */ if ( !error && face->root.internal->incremental_interface && face->root.internal->incremental_interface->funcs->get_glyph_metrics ) { FT_Incremental_MetricsRec metrics; metrics.bearing_x = decoder.builder.left_bearing.x; metrics.bearing_y = 0; metrics.advance = decoder.builder.advance.x; metrics.advance_v = decoder.builder.advance.y; error = face->root.internal->incremental_interface->funcs->get_glyph_metrics( face->root.internal->incremental_interface->object, glyph_index, FALSE, &metrics ); decoder.builder.left_bearing.x = metrics.bearing_x; decoder.builder.advance.x = metrics.advance; decoder.builder.advance.y = metrics.advance_v; } #endif /* FT_CONFIG_OPTION_INCREMENTAL */ if ( !error ) { /* Now, set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax. */ /* For composite glyphs, return only left side bearing and */ /* advance width. */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = glyph->root.internal; glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x; glyph->root.metrics.horiAdvance = decoder.glyph_width; internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &glyph->root.metrics; FT_Bool has_vertical_info; if ( face->horizontal.number_Of_HMetrics ) { FT_Short horiBearingX = 0; FT_UShort horiAdvance = 0; ( (SFNT_Service)face->sfnt )->get_metrics( face, 0, glyph_index, &horiBearingX, &horiAdvance ); metrics->horiAdvance = horiAdvance; metrics->horiBearingX = horiBearingX; glyph->root.linearHoriAdvance = horiAdvance; } else { /* copy the _unscaled_ advance width */ metrics->horiAdvance = decoder.glyph_width; glyph->root.linearHoriAdvance = decoder.glyph_width; } glyph->root.internal->glyph_transformed = 0; has_vertical_info = FT_BOOL( face->vertical_info && face->vertical.number_Of_VMetrics > 0 ); /* get the vertical metrics from the vmtx table if we have one */ if ( has_vertical_info ) { FT_Short vertBearingY = 0; FT_UShort vertAdvance = 0; ( (SFNT_Service)face->sfnt )->get_metrics( face, 1, glyph_index, &vertBearingY, &vertAdvance ); metrics->vertBearingY = vertBearingY; metrics->vertAdvance = vertAdvance; } else { /* make up vertical ones */ if ( face->os2.version != 0xFFFFU ) metrics->vertAdvance = (FT_Pos)( face->os2.sTypoAscender - face->os2.sTypoDescender ); else metrics->vertAdvance = (FT_Pos)( face->horizontal.Ascender - face->horizontal.Descender ); } glyph->root.linearVertAdvance = metrics->vertAdvance; glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; glyph->root.outline.flags = 0; if ( size && size->root.metrics.y_ppem < 24 ) glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION; glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL; /* apply the font matrix, if any */ if ( font_matrix.xx != 0x10000L || font_matrix.yy != 0x10000L || font_matrix.xy != 0 || font_matrix.yx != 0 ) { FT_Outline_Transform( &glyph->root.outline, &font_matrix ); metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, font_matrix.xx ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, font_matrix.yy ); } if ( font_offset.x || font_offset.y ) { FT_Outline_Translate( &glyph->root.outline, font_offset.x, font_offset.y ); metrics->horiAdvance += font_offset.x; metrics->vertAdvance += font_offset.y; } if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 || force_scaling ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = &glyph->root.outline; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points */ if ( !hinting || !decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); } /* compute the other metrics */ FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; if ( has_vertical_info ) metrics->vertBearingX = metrics->horiBearingX - metrics->horiAdvance / 2; else { if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) ft_synthesize_vertical_metrics( metrics, metrics->vertAdvance ); } } } return error; }
af_loader_load_glyph( AF_Loader loader, AF_Module module, FT_Face face, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; FT_Size size = face->size; FT_Size_Internal size_internal = size->internal; FT_GlyphSlot slot = face->glyph; FT_Slot_Internal slot_internal = slot->internal; FT_GlyphLoader gloader = slot_internal->loader; AF_GlyphHints hints = loader->hints; AF_ScalerRec scaler; AF_StyleMetrics style_metrics; FT_UInt style_options = AF_STYLE_NONE_DFLT; AF_StyleClass style_class; AF_WritingSystemClass writing_system_class; if ( !size ) return FT_THROW( Invalid_Size_Handle ); FT_ZERO( &scaler ); if ( !size_internal->autohint_metrics.x_scale || size_internal->autohint_mode != FT_LOAD_TARGET_MODE( load_flags ) ) { /* switching between hinting modes usually means different scaling */ /* values; this later on enforces recomputation of everything */ /* related to the current size */ size_internal->autohint_mode = FT_LOAD_TARGET_MODE( load_flags ); size_internal->autohint_metrics = size->metrics; #ifdef AF_CONFIG_OPTION_TT_SIZE_METRICS { FT_Size_Metrics* size_metrics = &size_internal->autohint_metrics; /* set metrics to integer values and adjust scaling accordingly; */ /* this is the same setup as with TrueType fonts, cf. function */ /* `tt_size_reset' in file `ttobjs.c' */ size_metrics->ascender = FT_PIX_ROUND( FT_MulFix( face->ascender, size_metrics->y_scale ) ); size_metrics->descender = FT_PIX_ROUND( FT_MulFix( face->descender, size_metrics->y_scale ) ); size_metrics->height = FT_PIX_ROUND( FT_MulFix( face->height, size_metrics->y_scale ) ); size_metrics->x_scale = FT_DivFix( size_metrics->x_ppem << 6, face->units_per_EM ); size_metrics->y_scale = FT_DivFix( size_metrics->y_ppem << 6, face->units_per_EM ); size_metrics->max_advance = FT_PIX_ROUND( FT_MulFix( face->max_advance_width, size_metrics->x_scale ) ); } #endif /* AF_CONFIG_OPTION_TT_SIZE_METRICS */ } /* * TODO: This code currently doesn't support fractional advance widths, * i.e., placing hinted glyphs at anything other than integer * x-positions. This is only relevant for the warper code, which * scales and shifts glyphs to optimize blackness of stems (hinting on * the x-axis by nature places things on pixel integers, hinting on the * y-axis only, i.e., LIGHT mode, doesn't touch the x-axis). The delta * values of the scaler would need to be adjusted. */ scaler.face = face; scaler.x_scale = size_internal->autohint_metrics.x_scale; scaler.x_delta = 0; scaler.y_scale = size_internal->autohint_metrics.y_scale; scaler.y_delta = 0; scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); scaler.flags = 0; /* note that the fallback style can't be changed anymore */ /* after the first call of `af_loader_load_glyph' */ error = af_loader_reset( loader, module, face ); if ( error ) goto Exit; #ifdef FT_OPTION_AUTOFIT2 /* XXX: undocumented hook to activate the latin2 writing system. */ if ( load_flags & ( 1UL << 20 ) ) style_options = AF_STYLE_LTN2_DFLT; #endif /* * Glyphs (really code points) are assigned to scripts. Script * analysis is done lazily: For each glyph that passes through here, * the corresponding script analyzer is called, but returns immediately * if it has been run already. */ error = af_face_globals_get_metrics( loader->globals, glyph_index, style_options, &style_metrics ); if ( error ) goto Exit; style_class = style_metrics->style_class; writing_system_class = af_writing_system_classes[style_class->writing_system]; loader->metrics = style_metrics; if ( writing_system_class->style_metrics_scale ) writing_system_class->style_metrics_scale( style_metrics, &scaler ); else style_metrics->scaler = scaler; if ( writing_system_class->style_hints_init ) { error = writing_system_class->style_hints_init( hints, style_metrics ); if ( error ) goto Exit; } /* * Do the main work of `af_loader_load_glyph'. Note that we never have * to deal with composite glyphs as those get loaded into * FT_GLYPH_FORMAT_OUTLINE by the recursed `FT_Load_Glyph' function. * In the rare cases where FT_LOAD_NO_RECURSE is set, it implies * FT_LOAD_NO_SCALE and as such the auto-hinter is never called. */ load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM | FT_LOAD_LINEAR_DESIGN; load_flags &= ~FT_LOAD_RENDER; error = FT_Load_Glyph( face, glyph_index, load_flags ); if ( error ) goto Exit; /* * Apply stem darkening (emboldening) here before hints are applied to * the outline. Glyphs are scaled down proportionally to the * emboldening so that curve points don't fall outside their * precomputed blue zones. * * Any emboldening done by the font driver (e.g., the CFF driver) * doesn't reach here because the autohinter loads the unprocessed * glyphs in font units for analysis (functions `af_*_metrics_init_*') * and then above to prepare it for the rasterizers by itself, * independently of the font driver. So emboldening must be done here, * within the autohinter. * * All glyphs to be autohinted pass through here one by one. The * standard widths can therefore change from one glyph to the next, * depending on what script a glyph is assigned to (each script has its * own set of standard widths and other metrics). The darkening amount * must therefore be recomputed for each size and * `standard_{vertical,horizontal}_width' change. * * Ignore errors and carry on without emboldening. * */ /* stem darkening only works well in `light' mode */ if ( scaler.render_mode == FT_RENDER_MODE_LIGHT && ( !face->internal->no_stem_darkening || ( face->internal->no_stem_darkening < 0 && !module->no_stem_darkening ) ) ) af_loader_embolden_glyph_in_slot( loader, face, style_metrics ); loader->transformed = slot_internal->glyph_transformed; if ( loader->transformed ) { FT_Matrix inverse; loader->trans_matrix = slot_internal->glyph_matrix; loader->trans_delta = slot_internal->glyph_delta; inverse = loader->trans_matrix; if ( !FT_Matrix_Invert( &inverse ) ) FT_Vector_Transform( &loader->trans_delta, &inverse ); } switch ( slot->format ) { case FT_GLYPH_FORMAT_OUTLINE: /* translate the loaded glyph when an internal transform is needed */ if ( loader->transformed ) FT_Outline_Translate( &slot->outline, loader->trans_delta.x, loader->trans_delta.y ); /* compute original horizontal phantom points */ /* (and ignore vertical ones) */ loader->pp1.x = hints->x_delta; loader->pp1.y = hints->y_delta; loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance, hints->x_scale ) + hints->x_delta; loader->pp2.y = hints->y_delta; /* be sure to check for spacing glyphs */ if ( slot->outline.n_points == 0 ) goto Hint_Metrics; /* now load the slot image into the auto-outline */ /* and run the automatic hinting process */ if ( writing_system_class->style_hints_apply ) { error = writing_system_class->style_hints_apply( glyph_index, hints, &gloader->base.outline, style_metrics ); if ( error ) goto Exit; } /* we now need to adjust the metrics according to the change in */ /* width/positioning that occurred during the hinting process */ if ( scaler.render_mode != FT_RENDER_MODE_LIGHT ) { AF_AxisHints axis = &hints->axis[AF_DIMENSION_HORZ]; if ( axis->num_edges > 1 && AF_HINTS_DO_ADVANCE( hints ) ) { AF_Edge edge1 = axis->edges; /* leftmost edge */ AF_Edge edge2 = edge1 + axis->num_edges - 1; /* rightmost edge */ FT_Pos old_rsb = loader->pp2.x - edge2->opos; /* loader->pp1.x is always zero at this point of time */ FT_Pos old_lsb = edge1->opos; /* - loader->pp1.x */ FT_Pos new_lsb = edge1->pos; /* remember unhinted values to later account */ /* for rounding errors */ FT_Pos pp1x_uh = new_lsb - old_lsb; FT_Pos pp2x_uh = edge2->pos + old_rsb; /* prefer too much space over too little space */ /* for very small sizes */ if ( old_lsb < 24 ) pp1x_uh -= 8; if ( old_rsb < 24 ) pp2x_uh += 8; loader->pp1.x = FT_PIX_ROUND( pp1x_uh ); loader->pp2.x = FT_PIX_ROUND( pp2x_uh ); if ( loader->pp1.x >= new_lsb && old_lsb > 0 ) loader->pp1.x -= 64; if ( loader->pp2.x <= edge2->pos && old_rsb > 0 ) loader->pp2.x += 64; slot->lsb_delta = loader->pp1.x - pp1x_uh; slot->rsb_delta = loader->pp2.x - pp2x_uh; } else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x + hints->xmin_delta ); loader->pp2.x = FT_PIX_ROUND( pp2x + hints->xmax_delta ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } } /* `light' mode uses integer advance widths */ /* but sets `lsb_delta' and `rsb_delta' */ else { FT_Pos pp1x = loader->pp1.x; FT_Pos pp2x = loader->pp2.x; loader->pp1.x = FT_PIX_ROUND( pp1x ); loader->pp2.x = FT_PIX_ROUND( pp2x ); slot->lsb_delta = loader->pp1.x - pp1x; slot->rsb_delta = loader->pp2.x - pp2x; } break; default: /* we don't support other formats (yet?) */ error = FT_THROW( Unimplemented_Feature ); } Hint_Metrics: { FT_BBox bbox; FT_Vector vvector; vvector.x = slot->metrics.vertBearingX - slot->metrics.horiBearingX; vvector.y = slot->metrics.vertBearingY - slot->metrics.horiBearingY; vvector.x = FT_MulFix( vvector.x, style_metrics->scaler.x_scale ); vvector.y = FT_MulFix( vvector.y, style_metrics->scaler.y_scale ); /* transform the hinted outline if needed */ if ( loader->transformed ) { FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix ); FT_Vector_Transform( &vvector, &loader->trans_matrix ); } /* we must translate our final outline by -pp1.x and compute */ /* the new metrics */ if ( loader->pp1.x ) FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 ); FT_Outline_Get_CBox( &gloader->base.outline, &bbox ); bbox.xMin = FT_PIX_FLOOR( bbox.xMin ); bbox.yMin = FT_PIX_FLOOR( bbox.yMin ); bbox.xMax = FT_PIX_CEIL( bbox.xMax ); bbox.yMax = FT_PIX_CEIL( bbox.yMax ); slot->metrics.width = bbox.xMax - bbox.xMin; slot->metrics.height = bbox.yMax - bbox.yMin; slot->metrics.horiBearingX = bbox.xMin; slot->metrics.horiBearingY = bbox.yMax; slot->metrics.vertBearingX = FT_PIX_FLOOR( bbox.xMin + vvector.x ); slot->metrics.vertBearingY = FT_PIX_FLOOR( bbox.yMax + vvector.y ); /* for mono-width fonts (like Andale, Courier, etc.) we need */ /* to keep the original rounded advance width; ditto for */ /* digits if all have the same advance width */ if ( scaler.render_mode != FT_RENDER_MODE_LIGHT && ( FT_IS_FIXED_WIDTH( slot->face ) || ( af_face_globals_is_digit( loader->globals, glyph_index ) && style_metrics->digits_have_same_width ) ) ) { slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance, style_metrics->scaler.x_scale ); /* Set delta values to 0. Otherwise code that uses them is */ /* going to ruin the fixed advance width. */ slot->lsb_delta = 0; slot->rsb_delta = 0; } else { /* non-spacing glyphs must stay as-is */ if ( slot->metrics.horiAdvance ) slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x; } slot->metrics.vertAdvance = FT_MulFix( slot->metrics.vertAdvance, style_metrics->scaler.y_scale ); slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance ); slot->metrics.vertAdvance = FT_PIX_ROUND( slot->metrics.vertAdvance ); slot->format = FT_GLYPH_FORMAT_OUTLINE; } Exit: return error; }
af_loader_load_glyph( AF_Module module, FT_Face face, FT_UInt gindex, FT_Int32 load_flags ) { FT_Error error; FT_Size size = face->size; AF_Loader loader = module->loader; AF_ScalerRec scaler; if ( !size ) return AF_Err_Invalid_Argument; FT_ZERO( &scaler ); scaler.face = face; scaler.x_scale = size->metrics.x_scale; scaler.x_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.y_scale = size->metrics.y_scale; scaler.y_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); scaler.flags = 0; /* XXX: fix this */ error = af_loader_reset( module, face ); if ( !error ) { AF_ScriptMetrics metrics; FT_UInt options = 0; #ifdef FT_OPTION_AUTOFIT2 /* XXX: undocumented hook to activate the latin2 hinter */ if ( load_flags & ( 1UL << 20 ) ) options = 2; #endif error = af_face_globals_get_metrics( loader->globals, gindex, options, &metrics ); if ( !error ) { loader->metrics = metrics; if ( metrics->clazz->script_metrics_scale ) metrics->clazz->script_metrics_scale( metrics, &scaler ); else metrics->scaler = scaler; load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM; load_flags &= ~FT_LOAD_RENDER; if ( metrics->clazz->script_hints_init ) { error = metrics->clazz->script_hints_init( &loader->hints, metrics ); if ( error ) goto Exit; } error = af_loader_load_g( loader, &scaler, gindex, load_flags, 0 ); } } Exit: return error; }
FT_Error ta_loader_load_glyph(FONT* font, FT_Face face, FT_UInt gindex, FT_Int32 load_flags) { FT_Error error; FT_Size size = face->size; TA_Loader loader = font->loader; TA_ScalerRec scaler; if (!size) return FT_Err_Invalid_Size_Handle; memset(&scaler, 0, sizeof (TA_ScalerRec)); scaler.face = face; scaler.x_scale = size->metrics.x_scale; scaler.x_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.y_scale = size->metrics.y_scale; scaler.y_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.render_mode = FT_LOAD_TARGET_MODE(load_flags); scaler.flags = 0; /* XXX: fix this */ /* XXX this is an ugly hack of ttfautohint: */ /* bit 29 triggers vertical hinting only */ if (load_flags & (1 << 29)) scaler.flags |= TA_SCALER_FLAG_NO_HORIZONTAL; /* note that the fallback style can't be changed anymore */ /* after the first call of `ta_loader_load_glyph' */ error = ta_loader_reset(font, face); if (!error) { TA_StyleMetrics metrics; FT_UInt options = TA_STYLE_NONE_DFLT; #ifdef FT_OPTION_AUTOFIT2 /* XXX: undocumented hook to activate the latin2 hinter */ if (load_flags & (1UL << 20)) options = TA_STYLE_LTN2_DFLT; #endif error = ta_face_globals_get_metrics(loader->globals, gindex, options, &metrics); if (!error) { TA_StyleClass style_class = metrics->style_class; TA_WritingSystemClass writing_system_class = ta_writing_system_classes[style_class->writing_system]; loader->metrics = metrics; if (writing_system_class->style_metrics_scale) writing_system_class->style_metrics_scale(metrics, &scaler); else metrics->scaler = scaler; load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM; load_flags &= ~FT_LOAD_RENDER; if (writing_system_class->style_hints_init) { error = writing_system_class->style_hints_init(&loader->hints, metrics); if (error) goto Exit; } error = ta_loader_load_g(loader, &scaler, gindex, load_flags, 0); } } Exit: return error; }
cid_slot_load_glyph( FT_GlyphSlot cidglyph, /* CID_GlyphSlot */ FT_Size cidsize, /* CID_Size */ FT_UInt glyph_index, FT_Int32 load_flags ) { CID_GlyphSlot glyph = (CID_GlyphSlot)cidglyph; FT_Error error; T1_DecoderRec decoder; CID_Face face = (CID_Face)cidglyph->face; FT_Bool hinting; PSAux_Service psaux = (PSAux_Service)face->psaux; FT_Matrix font_matrix; FT_Vector font_offset; if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) { error = CID_Err_Invalid_Argument; goto Exit; } if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; glyph->x_scale = cidsize->metrics.x_scale; glyph->y_scale = cidsize->metrics.y_scale; cidglyph->outline.n_points = 0; cidglyph->outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); cidglyph->format = FT_GLYPH_FORMAT_OUTLINE; error = psaux->t1_decoder_funcs->init( &decoder, cidglyph->face, cidsize, cidglyph, 0, /* glyph names -- XXX */ 0, /* blend == 0 */ hinting, FT_LOAD_TARGET_MODE( load_flags ), cid_load_glyph ); if ( error ) goto Exit; /* TODO: initialize decoder.len_buildchar and decoder.buildchar */ /* if we ever support CID-keyed multiple master fonts */ /* set up the decoder */ decoder.builder.no_recurse = FT_BOOL( ( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ) ); error = cid_load_glyph( &decoder, glyph_index ); if ( error ) goto Exit; font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ psaux->t1_decoder_funcs->done( &decoder ); /* now set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ cidglyph->outline.flags &= FT_OUTLINE_OWNER; cidglyph->outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = cidglyph->internal; cidglyph->metrics.horiBearingX = FIXED_TO_INT( decoder.builder.left_bearing.x ); cidglyph->metrics.horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &cidglyph->metrics; FT_Vector advance; /* copy the _unscaled_ advance width */ metrics->horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); cidglyph->linearHoriAdvance = FIXED_TO_INT( decoder.builder.advance.x ); cidglyph->internal->glyph_transformed = 0; /* make up vertical ones */ metrics->vertAdvance = ( face->cid.font_bbox.yMax - face->cid.font_bbox.yMin ) >> 16; cidglyph->linearVertAdvance = metrics->vertAdvance; cidglyph->format = FT_GLYPH_FORMAT_OUTLINE; if ( cidsize->metrics.y_ppem < 24 ) cidglyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION; /* apply the font matrix */ FT_Outline_Transform( &cidglyph->outline, &font_matrix ); FT_Outline_Translate( &cidglyph->outline, font_offset.x, font_offset.y ); advance.x = metrics->horiAdvance; advance.y = 0; FT_Vector_Transform( &advance, &font_matrix ); metrics->horiAdvance = advance.x + font_offset.x; advance.x = 0; advance.y = metrics->vertAdvance; FT_Vector_Transform( &advance, &font_matrix ); metrics->vertAdvance = advance.y + font_offset.y; if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = decoder.builder.base; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points */ if ( !hinting || !decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); } /* compute the other metrics */ FT_Outline_Get_CBox( &cidglyph->outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) { /* make up vertical ones */ ft_synthesize_vertical_metrics( metrics, metrics->vertAdvance ); } } Exit: return error; }
af_loader_load_glyph( AF_Loader loader, AF_Module module, FT_Face face, FT_UInt gindex, FT_Int32 load_flags ) { FT_Error error; FT_Size size = face->size; AF_ScalerRec scaler; if ( !size ) return FT_THROW( Invalid_Size_Handle ); FT_ZERO( &scaler ); scaler.face = face; scaler.x_scale = size->metrics.x_scale; scaler.x_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.y_scale = size->metrics.y_scale; scaler.y_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */ scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags ); scaler.flags = 0; /* XXX: fix this */ error = af_loader_reset( loader, module, face ); if ( !error ) { AF_StyleMetrics metrics; FT_UInt options = AF_STYLE_NONE_DFLT; #ifdef FT_OPTION_AUTOFIT2 /* XXX: undocumented hook to activate the latin2 writing system */ if ( load_flags & ( 1UL << 20 ) ) options = AF_STYLE_LTN2_DFLT; #endif error = af_face_globals_get_metrics( loader->globals, gindex, options, &metrics ); if ( !error ) { #ifdef FT_CONFIG_OPTION_PIC AF_FaceGlobals globals = loader->globals; #endif AF_StyleClass style_class = metrics->style_class; AF_WritingSystemClass writing_system_class = AF_WRITING_SYSTEM_CLASSES_GET[style_class->writing_system]; loader->metrics = metrics; if ( writing_system_class->style_metrics_scale ) writing_system_class->style_metrics_scale( metrics, &scaler ); else metrics->scaler = scaler; load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM; load_flags &= ~FT_LOAD_RENDER; if ( writing_system_class->style_hints_init ) { error = writing_system_class->style_hints_init( loader->hints, metrics ); if ( error ) goto Exit; } error = af_loader_load_g( loader, &scaler, gindex, load_flags ); } } Exit: return error; }
T1_Load_Glyph( T1_GlyphSlot glyph, T1_Size size, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; T1_DecoderRec decoder; T1_Face face = (T1_Face)glyph->root.face; FT_Bool hinting; T1_Font type1 = &face->type1; PSAux_Service psaux = (PSAux_Service)face->psaux; const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs; FT_Matrix font_matrix; FT_Vector font_offset; FT_Data glyph_data; FT_Bool must_finish_decoder = FALSE; #ifdef FT_CONFIG_OPTION_INCREMENTAL FT_Bool glyph_data_loaded = 0; #endif if ( glyph_index >= (FT_UInt)face->root.num_glyphs ) { error = T1_Err_Invalid_Argument; goto Exit; } FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) ); if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; if ( size ) { glyph->x_scale = size->root.metrics.x_scale; glyph->y_scale = size->root.metrics.y_scale; } else { glyph->x_scale = 0x10000L; glyph->y_scale = 0x10000L; } glyph->root.outline.n_points = 0; glyph->root.outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; error = decoder_funcs->init( &decoder, (FT_Face)face, (FT_Size)size, (FT_GlyphSlot)glyph, (FT_Byte**)type1->glyph_names, face->blend, FT_BOOL( hinting ), FT_LOAD_TARGET_MODE( load_flags ), T1_Parse_Glyph ); if ( error ) goto Exit; must_finish_decoder = TRUE; decoder.builder.no_recurse = FT_BOOL( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ); decoder.num_subrs = type1->num_subrs; decoder.subrs = type1->subrs; decoder.subrs_len = type1->subrs_len; decoder.buildchar = face->buildchar; decoder.len_buildchar = face->len_buildchar; /* now load the unscaled outline */ error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index, &glyph_data ); if ( error ) goto Exit; #ifdef FT_CONFIG_OPTION_INCREMENTAL glyph_data_loaded = 1; #endif font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ decoder_funcs->done( &decoder ); must_finish_decoder = FALSE; /* now, set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ if ( !error ) { glyph->root.outline.flags &= FT_OUTLINE_OWNER; glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = glyph->root.internal; glyph->root.metrics.horiBearingX = FIXED_TO_INT( decoder.builder.left_bearing.x ); glyph->root.metrics.horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &glyph->root.metrics; FT_Vector advance; /* copy the _unscaled_ advance width */ metrics->horiAdvance = FIXED_TO_INT( decoder.builder.advance.x ); glyph->root.linearHoriAdvance = FIXED_TO_INT( decoder.builder.advance.x ); glyph->root.internal->glyph_transformed = 0; /* make up vertical ones */ metrics->vertAdvance = ( face->type1.font_bbox.yMax - face->type1.font_bbox.yMin ) >> 16; glyph->root.linearVertAdvance = metrics->vertAdvance; glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; if ( size && size->root.metrics.y_ppem < 24 ) glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION; #if 1 /* apply the font matrix, if any */ if ( font_matrix.xx != 0x10000L || font_matrix.yy != font_matrix.xx || font_matrix.xy != 0 || font_matrix.yx != 0 ) FT_Outline_Transform( &glyph->root.outline, &font_matrix ); if ( font_offset.x || font_offset.y ) FT_Outline_Translate( &glyph->root.outline, font_offset.x, font_offset.y ); advance.x = metrics->horiAdvance; advance.y = 0; FT_Vector_Transform( &advance, &font_matrix ); metrics->horiAdvance = advance.x + font_offset.x; advance.x = 0; advance.y = metrics->vertAdvance; FT_Vector_Transform( &advance, &font_matrix ); metrics->vertAdvance = advance.y + font_offset.y; #endif if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = decoder.builder.base; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points, if we are not hinting */ if ( !hinting || ! decoder.builder.hints_funcs ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); } /* compute the other metrics */ FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; /* make up vertical ones */ ft_synthesize_vertical_metrics( metrics, metrics->vertAdvance ); } /* Set control data to the glyph charstrings. Note that this is */ /* _not_ zero-terminated. */ glyph->root.control_data = (FT_Byte*)glyph_data.pointer; glyph->root.control_len = glyph_data.length; }
/* * Class: sun_font_FreetypeFontScaler * Method: getGlyphImageNative * Signature: (Lsun/font/Font2D;JI)J */ JNIEXPORT jlong JNICALL Java_sun_font_FreetypeFontScaler_getGlyphImageNative( JNIEnv *env, jobject scaler, jobject font2D, jlong pScalerContext, jlong pScaler, jint glyphCode) { int error, imageSize; UInt16 width, height; GlyphInfo *glyphInfo; int glyph_index; int renderFlags = FT_LOAD_RENDER, target; FT_GlyphSlot ftglyph; FTScalerContext* context = (FTScalerContext*) jlong_to_ptr(pScalerContext); FTScalerInfo *scalerInfo = (FTScalerInfo*) jlong_to_ptr(pScaler); if (isNullScalerContext(context) || scalerInfo == NULL) { return ptr_to_jlong(getNullGlyphImage()); } error = setupFTContext(env, font2D, scalerInfo, context); if (error) { invalidateJavaScaler(env, scaler, scalerInfo); return ptr_to_jlong(getNullGlyphImage()); } /* if algorithmic styling is required then we do not request bitmap */ if (context->doBold || context->doItalize) { renderFlags = FT_LOAD_DEFAULT; } /* NB: in case of non identity transform we might also prefer to disable transform before hinting, and apply it explicitly after hinting is performed. Or we can disable hinting. */ /* select appropriate hinting mode */ if (context->aaType == TEXT_AA_OFF) { target = FT_LOAD_TARGET_MONO; } else if (context->aaType == TEXT_AA_ON) { target = FT_LOAD_TARGET_NORMAL; } else if (context->aaType == TEXT_AA_LCD_HRGB || context->aaType == TEXT_AA_LCD_HBGR) { target = FT_LOAD_TARGET_LCD; } else { target = FT_LOAD_TARGET_LCD_V; } renderFlags |= target; glyph_index = FT_Get_Char_Index(scalerInfo->face, glyphCode); error = FT_Load_Glyph(scalerInfo->face, glyphCode, renderFlags); if (error) { //do not destroy scaler yet. //this can be problem of particular context (e.g. with bad transform) return ptr_to_jlong(getNullGlyphImage()); } ftglyph = scalerInfo->face->glyph; /* apply styles */ if (context->doBold) { /* if bold style */ FT_GlyphSlot_Embolden(ftglyph); } if (context->doItalize) { /* if oblique */ FT_GlyphSlot_Oblique(ftglyph); } /* generate bitmap if it is not done yet e.g. if algorithmic styling is performed and style was added to outline */ if (ftglyph->format == FT_GLYPH_FORMAT_OUTLINE) { FT_Render_Glyph(ftglyph, FT_LOAD_TARGET_MODE(target)); } width = (UInt16) ftglyph->bitmap.width; height = (UInt16) ftglyph->bitmap.rows; imageSize = width*height; glyphInfo = (GlyphInfo*) malloc(sizeof(GlyphInfo) + imageSize); if (glyphInfo == NULL) { glyphInfo = getNullGlyphImage(); return ptr_to_jlong(glyphInfo); } glyphInfo->cellInfo = NULL; glyphInfo->managed = UNMANAGED_GLYPH; glyphInfo->rowBytes = width; glyphInfo->width = width; glyphInfo->height = height; glyphInfo->topLeftX = (float) ftglyph->bitmap_left; glyphInfo->topLeftY = (float) -ftglyph->bitmap_top; if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD) { glyphInfo->width = width/3; } else if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD_V) { glyphInfo->height = glyphInfo->height/3; } if (context->fmType == TEXT_FM_ON) { double advh = FTFixedToFloat(ftglyph->linearHoriAdvance); glyphInfo->advanceX = (float) (advh * FTFixedToFloat(context->transform.xx)); glyphInfo->advanceY = (float) (advh * FTFixedToFloat(context->transform.xy)); } else { if (!ftglyph->advance.y) { glyphInfo->advanceX = (float) ROUND(FT26Dot6ToFloat(ftglyph->advance.x)); glyphInfo->advanceY = 0; } else if (!ftglyph->advance.x) { glyphInfo->advanceX = 0; glyphInfo->advanceY = (float) ROUND(FT26Dot6ToFloat(-ftglyph->advance.y)); } else { glyphInfo->advanceX = FT26Dot6ToFloat(ftglyph->advance.x); glyphInfo->advanceY = FT26Dot6ToFloat(-ftglyph->advance.y); } } if (imageSize == 0) { glyphInfo->image = NULL; } else { glyphInfo->image = (unsigned char*) glyphInfo + sizeof(GlyphInfo); //convert result to output format //output format is either 3 bytes per pixel (for subpixel modes) // or 1 byte per pixel for AA and B&W if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO) { /* convert from 8 pixels per byte to 1 byte per pixel */ CopyBW2Grey8(ftglyph->bitmap.buffer, ftglyph->bitmap.pitch, (void *) glyphInfo->image, width, width, height); } else if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY) { /* byte per pixel to byte per pixel => just copy */ memcpy(glyphInfo->image, ftglyph->bitmap.buffer, imageSize); } else if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY4) { /* 4 bits per pixel to byte per pixel */ CopyGrey4ToGrey8(ftglyph->bitmap.buffer, ftglyph->bitmap.pitch, (void *) glyphInfo->image, width, width, height); } else if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD) { /* 3 bytes per pixel to 3 bytes per pixel */ CopyFTSubpixelToSubpixel(ftglyph->bitmap.buffer, ftglyph->bitmap.pitch, (void *) glyphInfo->image, width, width, height); } else if (ftglyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD_V) { /* 3 bytes per pixel to 3 bytes per pixel */ CopyFTSubpixelVToSubpixel(ftglyph->bitmap.buffer, ftglyph->bitmap.pitch, (void *) glyphInfo->image, width*3, width, height); glyphInfo->rowBytes *=3; } else { free(glyphInfo); glyphInfo = getNullGlyphImage(); } } return ptr_to_jlong(glyphInfo); }
T1_Load_Glyph( T1_GlyphSlot glyph, T1_Size size, FT_UInt glyph_index, FT_Int32 load_flags ) { FT_Error error; T1_DecoderRec decoder; T1_Face face = (T1_Face)glyph->root.face; FT_Bool hinting; T1_Font type1 = &face->type1; PSAux_Service psaux = (PSAux_Service)face->psaux; const T1_Decoder_Funcs decoder_funcs = psaux->t1_decoder_funcs; FT_Matrix font_matrix; FT_Vector font_offset; FT_Data glyph_data; FT_Bool glyph_data_loaded = 0; if ( load_flags & FT_LOAD_NO_RECURSE ) load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; glyph->x_scale = size->root.metrics.x_scale; glyph->y_scale = size->root.metrics.y_scale; glyph->root.outline.n_points = 0; glyph->root.outline.n_contours = 0; hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 && ( load_flags & FT_LOAD_NO_HINTING ) == 0 ); glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; error = decoder_funcs->init( &decoder, (FT_Face)face, (FT_Size)size, (FT_GlyphSlot)glyph, (FT_Byte**)type1->glyph_names, face->blend, FT_BOOL( hinting ), FT_LOAD_TARGET_MODE(load_flags), T1_Parse_Glyph ); if ( error ) goto Exit; decoder.builder.no_recurse = FT_BOOL( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ); decoder.num_subrs = type1->num_subrs; decoder.subrs = type1->subrs; decoder.subrs_len = type1->subrs_len; /* now load the unscaled outline */ error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index, &glyph_data ); if ( error ) goto Exit; glyph_data_loaded = 1; FT_UNUSED( glyph_data_loaded ); font_matrix = decoder.font_matrix; font_offset = decoder.font_offset; /* save new glyph tables */ decoder_funcs->done( &decoder ); /* now, set the metrics -- this is rather simple, as */ /* the left side bearing is the xMin, and the top side */ /* bearing the yMax */ if ( !error ) { glyph->root.outline.flags &= FT_OUTLINE_OWNER; glyph->root.outline.flags |= FT_OUTLINE_REVERSE_FILL; /* for composite glyphs, return only left side bearing and */ /* advance width */ if ( load_flags & FT_LOAD_NO_RECURSE ) { FT_Slot_Internal internal = glyph->root.internal; glyph->root.metrics.horiBearingX = decoder.builder.left_bearing.x; glyph->root.metrics.horiAdvance = decoder.builder.advance.x; internal->glyph_matrix = font_matrix; internal->glyph_delta = font_offset; internal->glyph_transformed = 1; } else { FT_BBox cbox; FT_Glyph_Metrics* metrics = &glyph->root.metrics; /* copy the _unscaled_ advance width */ metrics->horiAdvance = decoder.builder.advance.x; glyph->root.linearHoriAdvance = decoder.builder.advance.x; glyph->root.internal->glyph_transformed = 0; /* make up vertical metrics */ metrics->vertBearingX = 0; metrics->vertBearingY = 0; metrics->vertAdvance = 0; glyph->root.linearVertAdvance = 0; glyph->root.format = FT_GLYPH_FORMAT_OUTLINE; if ( size && size->root.metrics.y_ppem < 24 ) glyph->root.outline.flags |= FT_OUTLINE_HIGH_PRECISION; #if 1 /* apply the font matrix, if any */ FT_Outline_Transform( &glyph->root.outline, &font_matrix ); FT_Outline_Translate( &glyph->root.outline, font_offset.x, font_offset.y ); #endif if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 ) { /* scale the outline and the metrics */ FT_Int n; FT_Outline* cur = decoder.builder.base; FT_Vector* vec = cur->points; FT_Fixed x_scale = glyph->x_scale; FT_Fixed y_scale = glyph->y_scale; /* First of all, scale the points, if we are not hinting */ if ( !hinting ) for ( n = cur->n_points; n > 0; n--, vec++ ) { vec->x = FT_MulFix( vec->x, x_scale ); vec->y = FT_MulFix( vec->y, y_scale ); } FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); /* Then scale the metrics */ metrics->horiAdvance = FT_MulFix( metrics->horiAdvance, x_scale ); metrics->vertAdvance = FT_MulFix( metrics->vertAdvance, y_scale ); metrics->vertBearingX = FT_MulFix( metrics->vertBearingX, x_scale ); metrics->vertBearingY = FT_MulFix( metrics->vertBearingY, y_scale ); if ( hinting ) { metrics->horiAdvance = ( metrics->horiAdvance + 32 ) & -64; metrics->vertAdvance = ( metrics->vertAdvance + 32 ) & -64; metrics->vertBearingX = ( metrics->vertBearingX + 32 ) & -64; metrics->vertBearingY = ( metrics->vertBearingY + 32 ) & -64; } } /* compute the other metrics */ FT_Outline_Get_CBox( &glyph->root.outline, &cbox ); /* grid fit the bounding box if necessary */ if ( hinting ) { cbox.xMin &= -64; cbox.yMin &= -64; cbox.xMax = ( cbox.xMax+63 ) & -64; cbox.yMax = ( cbox.yMax+63 ) & -64; } metrics->width = cbox.xMax - cbox.xMin; metrics->height = cbox.yMax - cbox.yMin; metrics->horiBearingX = cbox.xMin; metrics->horiBearingY = cbox.yMax; } /* Set control data to the glyph charstrings. Note that this is */ /* _not_ zero-terminated. */ glyph->root.control_data = (FT_Byte*)glyph_data.pointer; glyph->root.control_len = glyph_data.length; } Exit: #ifdef FT_CONFIG_OPTION_INCREMENTAL if ( glyph_data_loaded && face->root.internal->incremental_interface ) { face->root.internal->incremental_interface->funcs->free_glyph_data( face->root.internal->incremental_interface->object, &glyph_data ); /* Set the control data to null - it is no longer available if */ /* loaded incrementally. */ glyph->root.control_data = 0; glyph->root.control_len = 0; } #endif return error; }