diff options
Diffstat (limited to 'Build/source/libs/freetype2/freetype-src/src/cff/cffgload.c')
-rw-r--r-- | Build/source/libs/freetype2/freetype-src/src/cff/cffgload.c | 684 |
1 files changed, 0 insertions, 684 deletions
diff --git a/Build/source/libs/freetype2/freetype-src/src/cff/cffgload.c b/Build/source/libs/freetype2/freetype-src/src/cff/cffgload.c deleted file mode 100644 index feee38a4131..00000000000 --- a/Build/source/libs/freetype2/freetype-src/src/cff/cffgload.c +++ /dev/null @@ -1,684 +0,0 @@ -/**************************************************************************** - * - * cffgload.c - * - * OpenType Glyph Loader (body). - * - * Copyright (C) 1996-2020 by - * David Turner, Robert Wilhelm, and Werner Lemberg. - * - * 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 <freetype/internal/ftdebug.h> -#include <freetype/internal/ftstream.h> -#include <freetype/internal/sfnt.h> -#include <freetype/internal/ftcalc.h> -#include <freetype/internal/psaux.h> -#include <freetype/ftoutln.h> -#include <freetype/ftdriver.h> - -#include "cffload.h" -#include "cffgload.h" - -#include "cfferrs.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 cffgload - - - FT_LOCAL_DEF( FT_Error ) - cff_get_glyph_data( TT_Face face, - FT_UInt glyph_index, - FT_Byte** pointer, - FT_ULong* length ) - { -#ifdef FT_CONFIG_OPTION_INCREMENTAL - /* For incremental fonts get the character data using the */ - /* callback function. */ - if ( face->root.internal->incremental_interface ) - { - FT_Data data; - FT_Error error = - face->root.internal->incremental_interface->funcs->get_glyph_data( - face->root.internal->incremental_interface->object, - glyph_index, &data ); - - - *pointer = (FT_Byte*)data.pointer; - *length = (FT_ULong)data.length; - - return error; - } - else -#endif /* FT_CONFIG_OPTION_INCREMENTAL */ - - { - CFF_Font cff = (CFF_Font)(face->extra.data); - - - return cff_index_access_element( &cff->charstrings_index, glyph_index, - pointer, length ); - } - } - - - FT_LOCAL_DEF( void ) - cff_free_glyph_data( TT_Face face, - FT_Byte** pointer, - FT_ULong length ) - { -#ifndef FT_CONFIG_OPTION_INCREMENTAL - FT_UNUSED( length ); -#endif - -#ifdef FT_CONFIG_OPTION_INCREMENTAL - /* For incremental fonts get the character data using the */ - /* callback function. */ - if ( face->root.internal->incremental_interface ) - { - FT_Data data; - - - data.pointer = *pointer; - data.length = (FT_Int)length; - - face->root.internal->incremental_interface->funcs->free_glyph_data( - face->root.internal->incremental_interface->object, &data ); - } - else -#endif /* FT_CONFIG_OPTION_INCREMENTAL */ - - { - CFF_Font cff = (CFF_Font)(face->extra.data); - - - cff_index_forget_element( &cff->charstrings_index, pointer ); - } - } - - - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - /********** *********/ - /********** *********/ - /********** COMPUTE THE MAXIMUM ADVANCE WIDTH *********/ - /********** *********/ - /********** The following code is in charge of computing *********/ - /********** the maximum advance width of the font. It *********/ - /********** quickly processes each glyph charstring to *********/ - /********** extract the value from either a `sbw' or `seac' *********/ - /********** operator. *********/ - /********** *********/ - /*************************************************************************/ - /*************************************************************************/ - /*************************************************************************/ - - -#if 0 /* unused until we support pure CFF fonts */ - - - FT_LOCAL_DEF( FT_Error ) - cff_compute_max_advance( TT_Face face, - FT_Int* max_advance ) - { - FT_Error error = FT_Err_Ok; - CFF_Decoder decoder; - FT_Int glyph_index; - CFF_Font cff = (CFF_Font)face->other; - - PSAux_Service psaux = (PSAux_Service)face->psaux; - const CFF_Decoder_Funcs decoder_funcs = psaux->cff_decoder_funcs; - - - *max_advance = 0; - - /* Initialize load decoder */ - decoder_funcs->init( &decoder, face, 0, 0, 0, 0, 0, 0 ); - - decoder.builder.metrics_only = 1; - decoder.builder.load_points = 0; - - /* For each glyph, parse the glyph charstring and extract */ - /* the advance width. */ - for ( glyph_index = 0; glyph_index < face->root.num_glyphs; - glyph_index++ ) - { - FT_Byte* charstring; - FT_ULong charstring_len; - - - /* now get load the unscaled outline */ - error = cff_get_glyph_data( face, glyph_index, - &charstring, &charstring_len ); - if ( !error ) - { - error = decoder_funcs->prepare( &decoder, size, glyph_index ); - if ( !error ) - error = decoder_funcs->parse_charstrings_old( &decoder, - charstring, - charstring_len, - 0 ); - - cff_free_glyph_data( face, &charstring, &charstring_len ); - } - - /* ignore the error if one has occurred -- skip to next glyph */ - error = FT_Err_Ok; - } - - *max_advance = decoder.builder.advance.x; - - return FT_Err_Ok; - } - - -#endif /* 0 */ - - - FT_LOCAL_DEF( FT_Error ) - 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 * 64; - glyph->root.metrics.height = (FT_Pos)metrics.height * 64; - - glyph->root.metrics.horiBearingX = (FT_Pos)metrics.horiBearingX * 64; - glyph->root.metrics.horiBearingY = (FT_Pos)metrics.horiBearingY * 64; - glyph->root.metrics.horiAdvance = (FT_Pos)metrics.horiAdvance * 64; - - glyph->root.metrics.vertBearingX = (FT_Pos)metrics.vertBearingX * 64; - glyph->root.metrics.vertBearingY = (FT_Pos)metrics.vertBearingY * 64; - glyph->root.metrics.vertAdvance = (FT_Pos)metrics.vertAdvance * 64; - - 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; - metrics->vertBearingY = FT_MulFix( metrics->vertBearingY, - glyph->y_scale ); - } - else - { - if ( load_flags & FT_LOAD_VERTICAL_LAYOUT ) - ft_synthesize_vertical_metrics( metrics, - metrics->vertAdvance ); - } - } - } - - return error; - } - - -/* END */ |