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-rw-r--r--Build/source/libs/freetype2/freetype-src/src/cff/cffgload.c684
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 */