Index: core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cffgload.c |
diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cffgload.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cffgload.c |
deleted file mode 100644 |
index bbb75ab92441f0dfecd8cd01cf9cefe9a22ea0ec..0000000000000000000000000000000000000000 |
--- a/core/src/fxge/fx_freetype/fxft2.5.01/src/cff/cffgload.c |
+++ /dev/null |
@@ -1,3072 +0,0 @@ |
-/***************************************************************************/ |
-/* */ |
-/* cffgload.c */ |
-/* */ |
-/* OpenType Glyph Loader (body). */ |
-/* */ |
-/* Copyright 1996-2013 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 "../../include/ft2build.h" |
-#include "../../include/freetype/internal/ftdebug.h" |
-#include "../../include/freetype/internal/ftstream.h" |
-#include "../../include/freetype/internal/sfnt.h" |
-#include "../../include/freetype/ftoutln.h" |
-#include "../../include/freetype/ftcffdrv.h" |
- |
-#include "cffobjs.h" |
-#include "cffload.h" |
-#include "cffgload.h" |
-#include "cf2ft.h" /* for cf2_decoder_parse_charstrings */ |
- |
-#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 trace_cffgload |
- |
- |
-#ifdef CFF_CONFIG_OPTION_OLD_ENGINE |
- |
- typedef enum CFF_Operator_ |
- { |
- cff_op_unknown = 0, |
- |
- cff_op_rmoveto, |
- cff_op_hmoveto, |
- cff_op_vmoveto, |
- |
- cff_op_rlineto, |
- cff_op_hlineto, |
- cff_op_vlineto, |
- |
- cff_op_rrcurveto, |
- cff_op_hhcurveto, |
- cff_op_hvcurveto, |
- cff_op_rcurveline, |
- cff_op_rlinecurve, |
- cff_op_vhcurveto, |
- cff_op_vvcurveto, |
- |
- cff_op_flex, |
- cff_op_hflex, |
- cff_op_hflex1, |
- cff_op_flex1, |
- |
- cff_op_endchar, |
- |
- cff_op_hstem, |
- cff_op_vstem, |
- cff_op_hstemhm, |
- cff_op_vstemhm, |
- |
- cff_op_hintmask, |
- cff_op_cntrmask, |
- cff_op_dotsection, /* deprecated, acts as no-op */ |
- |
- cff_op_abs, |
- cff_op_add, |
- cff_op_sub, |
- cff_op_div, |
- cff_op_neg, |
- cff_op_random, |
- cff_op_mul, |
- cff_op_sqrt, |
- |
- cff_op_blend, |
- |
- cff_op_drop, |
- cff_op_exch, |
- cff_op_index, |
- cff_op_roll, |
- cff_op_dup, |
- |
- cff_op_put, |
- cff_op_get, |
- cff_op_store, |
- cff_op_load, |
- |
- cff_op_and, |
- cff_op_or, |
- cff_op_not, |
- cff_op_eq, |
- cff_op_ifelse, |
- |
- cff_op_callsubr, |
- cff_op_callgsubr, |
- cff_op_return, |
- |
- /* Type 1 opcodes: invalid but seen in real life */ |
- cff_op_hsbw, |
- cff_op_closepath, |
- cff_op_callothersubr, |
- cff_op_pop, |
- cff_op_seac, |
- cff_op_sbw, |
- cff_op_setcurrentpoint, |
- |
- /* do not remove */ |
- cff_op_max |
- |
- } CFF_Operator; |
- |
- |
-#define CFF_COUNT_CHECK_WIDTH 0x80 |
-#define CFF_COUNT_EXACT 0x40 |
-#define CFF_COUNT_CLEAR_STACK 0x20 |
- |
- /* count values which have the `CFF_COUNT_CHECK_WIDTH' flag set are */ |
- /* used for checking the width and requested numbers of arguments */ |
- /* only; they are set to zero afterwards */ |
- |
- /* the other two flags are informative only and unused currently */ |
- |
- static const FT_Byte cff_argument_counts[] = |
- { |
- 0, /* unknown */ |
- |
- 2 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT, /* rmoveto */ |
- 1 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT, |
- 1 | CFF_COUNT_CHECK_WIDTH | CFF_COUNT_EXACT, |
- |
- 0 | CFF_COUNT_CLEAR_STACK, /* rlineto */ |
- 0 | CFF_COUNT_CLEAR_STACK, |
- 0 | CFF_COUNT_CLEAR_STACK, |
- |
- 0 | CFF_COUNT_CLEAR_STACK, /* rrcurveto */ |
- 0 | CFF_COUNT_CLEAR_STACK, |
- 0 | CFF_COUNT_CLEAR_STACK, |
- 0 | CFF_COUNT_CLEAR_STACK, |
- 0 | CFF_COUNT_CLEAR_STACK, |
- 0 | CFF_COUNT_CLEAR_STACK, |
- 0 | CFF_COUNT_CLEAR_STACK, |
- |
- 13, /* flex */ |
- 7, |
- 9, |
- 11, |
- |
- 0 | CFF_COUNT_CHECK_WIDTH, /* endchar */ |
- |
- 2 | CFF_COUNT_CHECK_WIDTH, /* hstem */ |
- 2 | CFF_COUNT_CHECK_WIDTH, |
- 2 | CFF_COUNT_CHECK_WIDTH, |
- 2 | CFF_COUNT_CHECK_WIDTH, |
- |
- 0 | CFF_COUNT_CHECK_WIDTH, /* hintmask */ |
- 0 | CFF_COUNT_CHECK_WIDTH, /* cntrmask */ |
- 0, /* dotsection */ |
- |
- 1, /* abs */ |
- 2, |
- 2, |
- 2, |
- 1, |
- 0, |
- 2, |
- 1, |
- |
- 1, /* blend */ |
- |
- 1, /* drop */ |
- 2, |
- 1, |
- 2, |
- 1, |
- |
- 2, /* put */ |
- 1, |
- 4, |
- 3, |
- |
- 2, /* and */ |
- 2, |
- 1, |
- 2, |
- 4, |
- |
- 1, /* callsubr */ |
- 1, |
- 0, |
- |
- 2, /* hsbw */ |
- 0, |
- 0, |
- 0, |
- 5, /* seac */ |
- 4, /* sbw */ |
- 2 /* setcurrentpoint */ |
- }; |
- |
-#endif /* CFF_CONFIG_OPTION_OLD_ENGINE */ |
- |
- |
- /*************************************************************************/ |
- /*************************************************************************/ |
- /*************************************************************************/ |
- /********** *********/ |
- /********** *********/ |
- /********** GENERIC CHARSTRING PARSING *********/ |
- /********** *********/ |
- /********** *********/ |
- /*************************************************************************/ |
- /*************************************************************************/ |
- /*************************************************************************/ |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* cff_builder_init */ |
- /* */ |
- /* <Description> */ |
- /* Initializes a given glyph builder. */ |
- /* */ |
- /* <InOut> */ |
- /* builder :: A pointer to the glyph builder to initialize. */ |
- /* */ |
- /* <Input> */ |
- /* face :: The current face object. */ |
- /* */ |
- /* size :: The current size object. */ |
- /* */ |
- /* glyph :: The current glyph object. */ |
- /* */ |
- /* hinting :: Whether hinting is active. */ |
- /* */ |
- static void |
- cff_builder_init( CFF_Builder* builder, |
- TT_Face face, |
- CFF_Size size, |
- CFF_GlyphSlot glyph, |
- FT_Bool hinting ) |
- { |
- builder->path_begun = 0; |
- builder->load_points = 1; |
- |
- builder->face = face; |
- builder->glyph = glyph; |
- builder->memory = face->root.memory; |
- |
- if ( glyph ) |
- { |
- FT_GlyphLoader loader = glyph->root.internal->loader; |
- |
- |
- builder->loader = loader; |
- builder->base = &loader->base.outline; |
- builder->current = &loader->current.outline; |
- FT_GlyphLoader_Rewind( loader ); |
- |
- builder->hints_globals = 0; |
- builder->hints_funcs = 0; |
- |
- if ( hinting && size ) |
- { |
- CFF_Internal internal = (CFF_Internal)size->root.internal; |
- |
- |
- builder->hints_globals = (void *)internal->topfont; |
- builder->hints_funcs = glyph->root.internal->glyph_hints; |
- } |
- } |
- |
- builder->pos_x = 0; |
- builder->pos_y = 0; |
- |
- builder->left_bearing.x = 0; |
- builder->left_bearing.y = 0; |
- builder->advance.x = 0; |
- builder->advance.y = 0; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* cff_builder_done */ |
- /* */ |
- /* <Description> */ |
- /* Finalizes a given glyph builder. Its contents can still be used */ |
- /* after the call, but the function saves important information */ |
- /* within the corresponding glyph slot. */ |
- /* */ |
- /* <Input> */ |
- /* builder :: A pointer to the glyph builder to finalize. */ |
- /* */ |
- static void |
- cff_builder_done( CFF_Builder* builder ) |
- { |
- CFF_GlyphSlot glyph = builder->glyph; |
- |
- |
- if ( glyph ) |
- glyph->root.outline = *builder->base; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* cff_compute_bias */ |
- /* */ |
- /* <Description> */ |
- /* Computes the bias value in dependence of the number of glyph */ |
- /* subroutines. */ |
- /* */ |
- /* <Input> */ |
- /* in_charstring_type :: The `CharstringType' value of the top DICT */ |
- /* dictionary. */ |
- /* */ |
- /* num_subrs :: The number of glyph subroutines. */ |
- /* */ |
- /* <Return> */ |
- /* The bias value. */ |
- static FT_Int |
- cff_compute_bias( FT_Int in_charstring_type, |
- FT_UInt num_subrs ) |
- { |
- FT_Int result; |
- |
- |
- if ( in_charstring_type == 1 ) |
- result = 0; |
- else if ( num_subrs < 1240 ) |
- result = 107; |
- else if ( num_subrs < 33900U ) |
- result = 1131; |
- else |
- result = 32768U; |
- |
- return result; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* cff_decoder_init */ |
- /* */ |
- /* <Description> */ |
- /* Initializes a given glyph decoder. */ |
- /* */ |
- /* <InOut> */ |
- /* decoder :: A pointer to the glyph builder to initialize. */ |
- /* */ |
- /* <Input> */ |
- /* face :: The current face object. */ |
- /* */ |
- /* size :: The current size object. */ |
- /* */ |
- /* slot :: The current glyph object. */ |
- /* */ |
- /* hinting :: Whether hinting is active. */ |
- /* */ |
- /* hint_mode :: The hinting mode. */ |
- /* */ |
- FT_LOCAL_DEF( void ) |
- cff_decoder_init( CFF_Decoder* decoder, |
- TT_Face face, |
- CFF_Size size, |
- CFF_GlyphSlot slot, |
- FT_Bool hinting, |
- FT_Render_Mode hint_mode ) |
- { |
- CFF_Font cff = (CFF_Font)face->extra.data; |
- |
- |
- /* clear everything */ |
- FT_MEM_ZERO( decoder, sizeof ( *decoder ) ); |
- |
- /* initialize builder */ |
- cff_builder_init( &decoder->builder, face, size, slot, hinting ); |
- |
- /* initialize Type2 decoder */ |
- decoder->cff = cff; |
- decoder->num_globals = cff->global_subrs_index.count; |
- decoder->globals = cff->global_subrs; |
- decoder->globals_bias = cff_compute_bias( |
- cff->top_font.font_dict.charstring_type, |
- decoder->num_globals ); |
- |
- decoder->hint_mode = hint_mode; |
- } |
- |
- |
- /* this function is used to select the subfont */ |
- /* and the locals subrs array */ |
- FT_LOCAL_DEF( FT_Error ) |
- cff_decoder_prepare( CFF_Decoder* decoder, |
- CFF_Size size, |
- FT_UInt glyph_index ) |
- { |
- CFF_Builder *builder = &decoder->builder; |
- CFF_Font cff = (CFF_Font)builder->face->extra.data; |
- CFF_SubFont sub = &cff->top_font; |
- FT_Error error = FT_Err_Ok; |
- |
- |
- /* manage CID fonts */ |
- if ( cff->num_subfonts ) |
- { |
- FT_Byte fd_index = cff_fd_select_get( &cff->fd_select, glyph_index ); |
- |
- |
- if ( fd_index >= cff->num_subfonts ) |
- { |
- FT_TRACE4(( "cff_decoder_prepare: invalid CID subfont index\n" )); |
- error = FT_THROW( Invalid_File_Format ); |
- goto Exit; |
- } |
- |
- FT_TRACE3(( "glyph index %d (subfont %d):\n", glyph_index, fd_index )); |
- |
- sub = cff->subfonts[fd_index]; |
- |
- if ( builder->hints_funcs && size ) |
- { |
- CFF_Internal internal = (CFF_Internal)size->root.internal; |
- |
- |
- /* for CFFs without subfonts, this value has already been set */ |
- builder->hints_globals = (void *)internal->subfonts[fd_index]; |
- } |
- } |
-#ifdef FT_DEBUG_LEVEL_TRACE |
- else |
- FT_TRACE3(( "glyph index %d:\n", glyph_index )); |
-#endif |
- |
- decoder->num_locals = sub->local_subrs_index.count; |
- decoder->locals = sub->local_subrs; |
- decoder->locals_bias = cff_compute_bias( |
- decoder->cff->top_font.font_dict.charstring_type, |
- decoder->num_locals ); |
- |
- decoder->glyph_width = sub->private_dict.default_width; |
- decoder->nominal_width = sub->private_dict.nominal_width; |
- |
- decoder->current_subfont = sub; /* for Adobe's CFF handler */ |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /* check that there is enough space for `count' more points */ |
- FT_LOCAL_DEF( FT_Error ) |
- cff_check_points( CFF_Builder* builder, |
- FT_Int count ) |
- { |
- return FT_GLYPHLOADER_CHECK_POINTS( builder->loader, count, 0 ); |
- } |
- |
- |
- /* add a new point, do not check space */ |
- FT_LOCAL_DEF( void ) |
- cff_builder_add_point( CFF_Builder* builder, |
- FT_Pos x, |
- FT_Pos y, |
- FT_Byte flag ) |
- { |
- FT_Outline* outline = builder->current; |
- |
- |
- if ( builder->load_points ) |
- { |
- FT_Vector* point = outline->points + outline->n_points; |
- FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points; |
- |
-#ifdef CFF_CONFIG_OPTION_OLD_ENGINE |
- CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( builder->face ); |
- |
- |
- if ( driver->hinting_engine == FT_CFF_HINTING_FREETYPE ) |
- { |
- point->x = x >> 16; |
- point->y = y >> 16; |
- } |
- else |
-#endif |
- { |
- /* cf2_decoder_parse_charstrings uses 16.16 coordinates */ |
- point->x = x >> 10; |
- point->y = y >> 10; |
- } |
- *control = (FT_Byte)( flag ? FT_CURVE_TAG_ON : FT_CURVE_TAG_CUBIC ); |
- } |
- |
- outline->n_points++; |
- } |
- |
- |
- /* check space for a new on-curve point, then add it */ |
- FT_LOCAL_DEF( FT_Error ) |
- cff_builder_add_point1( CFF_Builder* builder, |
- FT_Pos x, |
- FT_Pos y ) |
- { |
- FT_Error error; |
- |
- |
- error = cff_check_points( builder, 1 ); |
- if ( !error ) |
- cff_builder_add_point( builder, x, y, 1 ); |
- |
- return error; |
- } |
- |
- |
- /* check space for a new contour, then add it */ |
- static FT_Error |
- cff_builder_add_contour( CFF_Builder* builder ) |
- { |
- FT_Outline* outline = builder->current; |
- FT_Error error; |
- |
- |
- if ( !builder->load_points ) |
- { |
- outline->n_contours++; |
- return FT_Err_Ok; |
- } |
- |
- error = FT_GLYPHLOADER_CHECK_POINTS( builder->loader, 0, 1 ); |
- if ( !error ) |
- { |
- if ( outline->n_contours > 0 ) |
- outline->contours[outline->n_contours - 1] = |
- (short)( outline->n_points - 1 ); |
- |
- outline->n_contours++; |
- } |
- |
- return error; |
- } |
- |
- |
- /* if a path was begun, add its first on-curve point */ |
- FT_LOCAL_DEF( FT_Error ) |
- cff_builder_start_point( CFF_Builder* builder, |
- FT_Pos x, |
- FT_Pos y ) |
- { |
- FT_Error error = FT_Err_Ok; |
- |
- |
- /* test whether we are building a new contour */ |
- if ( !builder->path_begun ) |
- { |
- builder->path_begun = 1; |
- error = cff_builder_add_contour( builder ); |
- if ( !error ) |
- error = cff_builder_add_point1( builder, x, y ); |
- } |
- |
- return error; |
- } |
- |
- |
- /* close the current contour */ |
- FT_LOCAL_DEF( void ) |
- cff_builder_close_contour( CFF_Builder* builder ) |
- { |
- FT_Outline* outline = builder->current; |
- FT_Int first; |
- |
- |
- if ( !outline ) |
- return; |
- |
- first = outline->n_contours <= 1 |
- ? 0 : outline->contours[outline->n_contours - 2] + 1; |
- |
- /* We must not include the last point in the path if it */ |
- /* is located on the first point. */ |
- if ( outline->n_points > 1 ) |
- { |
- FT_Vector* p1 = outline->points + first; |
- FT_Vector* p2 = outline->points + outline->n_points - 1; |
- FT_Byte* control = (FT_Byte*)outline->tags + outline->n_points - 1; |
- |
- |
- /* `delete' last point only if it coincides with the first */ |
- /* point and if it is not a control point (which can happen). */ |
- if ( p1->x == p2->x && p1->y == p2->y ) |
- if ( *control == FT_CURVE_TAG_ON ) |
- outline->n_points--; |
- } |
- |
- if ( outline->n_contours > 0 ) |
- { |
- /* Don't add contours only consisting of one point, i.e., */ |
- /* check whether begin point and last point are the same. */ |
- if ( first == outline->n_points - 1 ) |
- { |
- outline->n_contours--; |
- outline->n_points--; |
- } |
- else |
- outline->contours[outline->n_contours - 1] = |
- (short)( outline->n_points - 1 ); |
- } |
- } |
- |
- |
- FT_LOCAL_DEF( FT_Int ) |
- cff_lookup_glyph_by_stdcharcode( CFF_Font cff, |
- FT_Int charcode ) |
- { |
- FT_UInt n; |
- FT_UShort glyph_sid; |
- |
- |
- /* CID-keyed fonts don't have glyph names */ |
- if ( !cff->charset.sids ) |
- return -1; |
- |
- /* check range of standard char code */ |
- if ( charcode < 0 || charcode > 255 ) |
- return -1; |
- |
- /* Get code to SID mapping from `cff_standard_encoding'. */ |
- glyph_sid = cff_get_standard_encoding( (FT_UInt)charcode ); |
- |
- for ( n = 0; n < cff->num_glyphs; n++ ) |
- { |
- if ( cff->charset.sids[n] == glyph_sid ) |
- return n; |
- } |
- |
- return -1; |
- } |
- |
- |
- 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 = 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 = 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 ); |
- } |
- } |
- |
- |
-#ifdef CFF_CONFIG_OPTION_OLD_ENGINE |
- |
- static FT_Error |
- cff_operator_seac( CFF_Decoder* decoder, |
- FT_Pos asb, |
- FT_Pos adx, |
- FT_Pos ady, |
- FT_Int bchar, |
- FT_Int achar ) |
- { |
- FT_Error error; |
- CFF_Builder* builder = &decoder->builder; |
- FT_Int bchar_index, achar_index; |
- TT_Face face = decoder->builder.face; |
- FT_Vector left_bearing, advance; |
- FT_Byte* charstring; |
- FT_ULong charstring_len; |
- FT_Pos glyph_width; |
- |
- |
- if ( decoder->seac ) |
- { |
- FT_ERROR(( "cff_operator_seac: invalid nested seac\n" )); |
- return FT_THROW( Syntax_Error ); |
- } |
- |
- adx += decoder->builder.left_bearing.x; |
- ady += decoder->builder.left_bearing.y; |
- |
-#ifdef FT_CONFIG_OPTION_INCREMENTAL |
- /* Incremental fonts don't necessarily have valid charsets. */ |
- /* They use the character code, not the glyph index, in this case. */ |
- if ( face->root.internal->incremental_interface ) |
- { |
- bchar_index = bchar; |
- achar_index = achar; |
- } |
- else |
-#endif /* FT_CONFIG_OPTION_INCREMENTAL */ |
- { |
- CFF_Font cff = (CFF_Font)(face->extra.data); |
- |
- |
- bchar_index = cff_lookup_glyph_by_stdcharcode( cff, bchar ); |
- achar_index = cff_lookup_glyph_by_stdcharcode( cff, achar ); |
- } |
- |
- if ( bchar_index < 0 || achar_index < 0 ) |
- { |
- FT_ERROR(( "cff_operator_seac:" |
- " invalid seac character code arguments\n" )); |
- return FT_THROW( Syntax_Error ); |
- } |
- |
- /* If we are trying to load a composite glyph, do not load the */ |
- /* accent character and return the array of subglyphs. */ |
- if ( builder->no_recurse ) |
- { |
- FT_GlyphSlot glyph = (FT_GlyphSlot)builder->glyph; |
- FT_GlyphLoader loader = glyph->internal->loader; |
- FT_SubGlyph subg; |
- |
- |
- /* reallocate subglyph array if necessary */ |
- error = FT_GlyphLoader_CheckSubGlyphs( loader, 2 ); |
- if ( error ) |
- goto Exit; |
- |
- subg = loader->current.subglyphs; |
- |
- /* subglyph 0 = base character */ |
- subg->index = bchar_index; |
- subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES | |
- FT_SUBGLYPH_FLAG_USE_MY_METRICS; |
- subg->arg1 = 0; |
- subg->arg2 = 0; |
- subg++; |
- |
- /* subglyph 1 = accent character */ |
- subg->index = achar_index; |
- subg->flags = FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES; |
- subg->arg1 = (FT_Int)( adx >> 16 ); |
- subg->arg2 = (FT_Int)( ady >> 16 ); |
- |
- /* set up remaining glyph fields */ |
- glyph->num_subglyphs = 2; |
- glyph->subglyphs = loader->base.subglyphs; |
- glyph->format = FT_GLYPH_FORMAT_COMPOSITE; |
- |
- loader->current.num_subglyphs = 2; |
- } |
- |
- FT_GlyphLoader_Prepare( builder->loader ); |
- |
- /* First load `bchar' in builder */ |
- error = cff_get_glyph_data( face, bchar_index, |
- &charstring, &charstring_len ); |
- if ( !error ) |
- { |
- /* the seac operator must not be nested */ |
- decoder->seac = TRUE; |
- error = cff_decoder_parse_charstrings( decoder, charstring, |
- charstring_len ); |
- decoder->seac = FALSE; |
- |
- cff_free_glyph_data( face, &charstring, charstring_len ); |
- |
- if ( error ) |
- goto Exit; |
- } |
- |
- /* Save the left bearing, advance and glyph width of the base */ |
- /* character as they will be erased by the next load. */ |
- |
- left_bearing = builder->left_bearing; |
- advance = builder->advance; |
- glyph_width = decoder->glyph_width; |
- |
- builder->left_bearing.x = 0; |
- builder->left_bearing.y = 0; |
- |
- builder->pos_x = adx - asb; |
- builder->pos_y = ady; |
- |
- /* Now load `achar' on top of the base outline. */ |
- error = cff_get_glyph_data( face, achar_index, |
- &charstring, &charstring_len ); |
- if ( !error ) |
- { |
- /* the seac operator must not be nested */ |
- decoder->seac = TRUE; |
- error = cff_decoder_parse_charstrings( decoder, charstring, |
- charstring_len ); |
- decoder->seac = FALSE; |
- |
- cff_free_glyph_data( face, &charstring, charstring_len ); |
- |
- if ( error ) |
- goto Exit; |
- } |
- |
- /* Restore the left side bearing, advance and glyph width */ |
- /* of the base character. */ |
- builder->left_bearing = left_bearing; |
- builder->advance = advance; |
- decoder->glyph_width = glyph_width; |
- |
- builder->pos_x = 0; |
- builder->pos_y = 0; |
- |
- Exit: |
- return error; |
- } |
- |
- |
- /*************************************************************************/ |
- /* */ |
- /* <Function> */ |
- /* cff_decoder_parse_charstrings */ |
- /* */ |
- /* <Description> */ |
- /* Parses a given Type 2 charstrings program. */ |
- /* */ |
- /* <InOut> */ |
- /* decoder :: The current Type 1 decoder. */ |
- /* */ |
- /* <Input> */ |
- /* charstring_base :: The base of the charstring stream. */ |
- /* */ |
- /* charstring_len :: The length in bytes of the charstring stream. */ |
- /* */ |
- /* <Return> */ |
- /* FreeType error code. 0 means success. */ |
- /* */ |
- FT_LOCAL_DEF( FT_Error ) |
- cff_decoder_parse_charstrings( CFF_Decoder* decoder, |
- FT_Byte* charstring_base, |
- FT_ULong charstring_len ) |
- { |
- FT_Error error; |
- CFF_Decoder_Zone* zone; |
- FT_Byte* ip; |
- FT_Byte* limit; |
- CFF_Builder* builder = &decoder->builder; |
- FT_Pos x, y; |
- FT_Fixed seed; |
- FT_Fixed* stack; |
- FT_Int charstring_type = |
- decoder->cff->top_font.font_dict.charstring_type; |
- |
- T2_Hints_Funcs hinter; |
- |
- |
- /* set default width */ |
- decoder->num_hints = 0; |
- decoder->read_width = 1; |
- |
- /* compute random seed from stack address of parameter */ |
- seed = (FT_Fixed)( ( (FT_PtrDist)(char*)&seed ^ |
- (FT_PtrDist)(char*)&decoder ^ |
- (FT_PtrDist)(char*)&charstring_base ) & |
- FT_ULONG_MAX ) ; |
- seed = ( seed ^ ( seed >> 10 ) ^ ( seed >> 20 ) ) & 0xFFFFL; |
- if ( seed == 0 ) |
- seed = 0x7384; |
- |
- /* initialize the decoder */ |
- decoder->top = decoder->stack; |
- decoder->zone = decoder->zones; |
- zone = decoder->zones; |
- stack = decoder->top; |
- |
- hinter = (T2_Hints_Funcs)builder->hints_funcs; |
- |
- builder->path_begun = 0; |
- |
- zone->base = charstring_base; |
- limit = zone->limit = charstring_base + charstring_len; |
- ip = zone->cursor = zone->base; |
- |
- error = FT_Err_Ok; |
- |
- x = builder->pos_x; |
- y = builder->pos_y; |
- |
- /* begin hints recording session, if any */ |
- if ( hinter ) |
- hinter->open( hinter->hints ); |
- |
- /* now execute loop */ |
- while ( ip < limit ) |
- { |
- CFF_Operator op; |
- FT_Byte v; |
- |
- |
- /********************************************************************/ |
- /* */ |
- /* Decode operator or operand */ |
- /* */ |
- v = *ip++; |
- if ( v >= 32 || v == 28 ) |
- { |
- FT_Int shift = 16; |
- FT_Int32 val; |
- |
- |
- /* this is an operand, push it on the stack */ |
- |
- /* if we use shifts, all computations are done with unsigned */ |
- /* values; the conversion to a signed value is the last step */ |
- if ( v == 28 ) |
- { |
- if ( ip + 1 >= limit ) |
- goto Syntax_Error; |
- val = (FT_Short)( ( (FT_UShort)ip[0] << 8 ) | ip[1] ); |
- ip += 2; |
- } |
- else if ( v < 247 ) |
- val = (FT_Int32)v - 139; |
- else if ( v < 251 ) |
- { |
- if ( ip >= limit ) |
- goto Syntax_Error; |
- val = ( (FT_Int32)v - 247 ) * 256 + *ip++ + 108; |
- } |
- else if ( v < 255 ) |
- { |
- if ( ip >= limit ) |
- goto Syntax_Error; |
- val = -( (FT_Int32)v - 251 ) * 256 - *ip++ - 108; |
- } |
- else |
- { |
- if ( ip + 3 >= limit ) |
- goto Syntax_Error; |
- val = (FT_Int32)( ( (FT_UInt32)ip[0] << 24 ) | |
- ( (FT_UInt32)ip[1] << 16 ) | |
- ( (FT_UInt32)ip[2] << 8 ) | |
- (FT_UInt32)ip[3] ); |
- ip += 4; |
- if ( charstring_type == 2 ) |
- shift = 0; |
- } |
- if ( decoder->top - stack >= CFF_MAX_OPERANDS ) |
- goto Stack_Overflow; |
- |
- val = (FT_Int32)( (FT_UInt32)val << shift ); |
- *decoder->top++ = val; |
- |
-#ifdef FT_DEBUG_LEVEL_TRACE |
- if ( !( val & 0xFFFFL ) ) |
- FT_TRACE4(( " %hd", (FT_Short)( (FT_UInt32)val >> 16 ) )); |
- else |
- FT_TRACE4(( " %.2f", val / 65536.0 )); |
-#endif |
- |
- } |
- else |
- { |
- /* The specification says that normally arguments are to be taken */ |
- /* from the bottom of the stack. However, this seems not to be */ |
- /* correct, at least for Acroread 7.0.8 on GNU/Linux: It pops the */ |
- /* arguments similar to a PS interpreter. */ |
- |
- FT_Fixed* args = decoder->top; |
- FT_Int num_args = (FT_Int)( args - decoder->stack ); |
- FT_Int req_args; |
- |
- |
- /* find operator */ |
- op = cff_op_unknown; |
- |
- switch ( v ) |
- { |
- case 1: |
- op = cff_op_hstem; |
- break; |
- case 3: |
- op = cff_op_vstem; |
- break; |
- case 4: |
- op = cff_op_vmoveto; |
- break; |
- case 5: |
- op = cff_op_rlineto; |
- break; |
- case 6: |
- op = cff_op_hlineto; |
- break; |
- case 7: |
- op = cff_op_vlineto; |
- break; |
- case 8: |
- op = cff_op_rrcurveto; |
- break; |
- case 9: |
- op = cff_op_closepath; |
- break; |
- case 10: |
- op = cff_op_callsubr; |
- break; |
- case 11: |
- op = cff_op_return; |
- break; |
- case 12: |
- { |
- if ( ip >= limit ) |
- goto Syntax_Error; |
- v = *ip++; |
- |
- switch ( v ) |
- { |
- case 0: |
- op = cff_op_dotsection; |
- break; |
- case 1: /* this is actually the Type1 vstem3 operator */ |
- op = cff_op_vstem; |
- break; |
- case 2: /* this is actually the Type1 hstem3 operator */ |
- op = cff_op_hstem; |
- break; |
- case 3: |
- op = cff_op_and; |
- break; |
- case 4: |
- op = cff_op_or; |
- break; |
- case 5: |
- op = cff_op_not; |
- break; |
- case 6: |
- op = cff_op_seac; |
- break; |
- case 7: |
- op = cff_op_sbw; |
- break; |
- case 8: |
- op = cff_op_store; |
- break; |
- case 9: |
- op = cff_op_abs; |
- break; |
- case 10: |
- op = cff_op_add; |
- break; |
- case 11: |
- op = cff_op_sub; |
- break; |
- case 12: |
- op = cff_op_div; |
- break; |
- case 13: |
- op = cff_op_load; |
- break; |
- case 14: |
- op = cff_op_neg; |
- break; |
- case 15: |
- op = cff_op_eq; |
- break; |
- case 16: |
- op = cff_op_callothersubr; |
- break; |
- case 17: |
- op = cff_op_pop; |
- break; |
- case 18: |
- op = cff_op_drop; |
- break; |
- case 20: |
- op = cff_op_put; |
- break; |
- case 21: |
- op = cff_op_get; |
- break; |
- case 22: |
- op = cff_op_ifelse; |
- break; |
- case 23: |
- op = cff_op_random; |
- break; |
- case 24: |
- op = cff_op_mul; |
- break; |
- case 26: |
- op = cff_op_sqrt; |
- break; |
- case 27: |
- op = cff_op_dup; |
- break; |
- case 28: |
- op = cff_op_exch; |
- break; |
- case 29: |
- op = cff_op_index; |
- break; |
- case 30: |
- op = cff_op_roll; |
- break; |
- case 33: |
- op = cff_op_setcurrentpoint; |
- break; |
- case 34: |
- op = cff_op_hflex; |
- break; |
- case 35: |
- op = cff_op_flex; |
- break; |
- case 36: |
- op = cff_op_hflex1; |
- break; |
- case 37: |
- op = cff_op_flex1; |
- break; |
- /*default: */ /* XYQ 2007-9-6: we can't just quit if we see some reserved op */ |
- /* decrement ip for syntax error message */ |
- /* ip--;*/ |
- } |
- } |
- break; |
- case 13: |
- op = cff_op_hsbw; |
- break; |
- case 14: |
- op = cff_op_endchar; |
- break; |
- case 16: |
- op = cff_op_blend; |
- break; |
- case 18: |
- op = cff_op_hstemhm; |
- break; |
- case 19: |
- op = cff_op_hintmask; |
- break; |
- case 20: |
- op = cff_op_cntrmask; |
- break; |
- case 21: |
- op = cff_op_rmoveto; |
- break; |
- case 22: |
- op = cff_op_hmoveto; |
- break; |
- case 23: |
- op = cff_op_vstemhm; |
- break; |
- case 24: |
- op = cff_op_rcurveline; |
- break; |
- case 25: |
- op = cff_op_rlinecurve; |
- break; |
- case 26: |
- op = cff_op_vvcurveto; |
- break; |
- case 27: |
- op = cff_op_hhcurveto; |
- break; |
- case 29: |
- op = cff_op_callgsubr; |
- break; |
- case 30: |
- op = cff_op_vhcurveto; |
- break; |
- case 31: |
- op = cff_op_hvcurveto; |
- break; |
- default: |
- FT_TRACE4(( " unknown op (%d)\n", v )); |
- break; |
- } |
- |
- if ( op == cff_op_unknown ) |
- continue; |
- |
- /* check arguments */ |
- req_args = cff_argument_counts[op]; |
- if ( req_args & CFF_COUNT_CHECK_WIDTH ) |
- { |
- if ( num_args > 0 && decoder->read_width ) |
- { |
- /* If `nominal_width' is non-zero, the number is really a */ |
- /* difference against `nominal_width'. Else, the number here */ |
- /* is truly a width, not a difference against `nominal_width'. */ |
- /* If the font does not set `nominal_width', then */ |
- /* `nominal_width' defaults to zero, and so we can set */ |
- /* `glyph_width' to `nominal_width' plus number on the stack */ |
- /* -- for either case. */ |
- |
- FT_Int set_width_ok; |
- |
- |
- switch ( op ) |
- { |
- case cff_op_hmoveto: |
- case cff_op_vmoveto: |
- set_width_ok = num_args & 2; |
- break; |
- |
- case cff_op_hstem: |
- case cff_op_vstem: |
- case cff_op_hstemhm: |
- case cff_op_vstemhm: |
- case cff_op_rmoveto: |
- case cff_op_hintmask: |
- case cff_op_cntrmask: |
- set_width_ok = num_args & 1; |
- break; |
- |
- case cff_op_endchar: |
- /* If there is a width specified for endchar, we either have */ |
- /* 1 argument or 5 arguments. We like to argue. */ |
- set_width_ok = ( num_args == 5 ) || ( num_args == 1 ); |
- break; |
- |
- default: |
- set_width_ok = 0; |
- break; |
- } |
- |
- if ( set_width_ok ) |
- { |
- decoder->glyph_width = decoder->nominal_width + |
- ( stack[0] >> 16 ); |
- |
- if ( decoder->width_only ) |
- { |
- /* we only want the advance width; stop here */ |
- break; |
- } |
- |
- /* Consumed an argument. */ |
- num_args--; |
- } |
- } |
- |
- decoder->read_width = 0; |
- req_args = 0; |
- } |
- |
- req_args &= 0x000F; |
- if ( num_args < req_args ) |
- goto Stack_Underflow; |
- args -= req_args; |
- num_args -= req_args; |
- |
- /* Sunliang.Liu sync 221's revison. */ |
- if (args > decoder->stack + CFF_MAX_OPERANDS) |
- goto Stack_Overflow; |
- |
- /* At this point, `args' points to the first argument of the */ |
- /* operand in case `req_args' isn't zero. Otherwise, we have */ |
- /* to adjust `args' manually. */ |
- |
- /* Note that we only pop arguments from the stack which we */ |
- /* really need and can digest so that we can continue in case */ |
- /* of superfluous stack elements. */ |
- |
- switch ( op ) |
- { |
- case cff_op_hstem: |
- case cff_op_vstem: |
- case cff_op_hstemhm: |
- case cff_op_vstemhm: |
- /* the number of arguments is always even here */ |
- FT_TRACE4(( |
- op == cff_op_hstem ? " hstem\n" : |
- ( op == cff_op_vstem ? " vstem\n" : |
- ( op == cff_op_hstemhm ? " hstemhm\n" : " vstemhm\n" ) ) )); |
- |
- if ( hinter ) |
- hinter->stems( hinter->hints, |
- ( op == cff_op_hstem || op == cff_op_hstemhm ), |
- num_args / 2, |
- args - ( num_args & ~1 ) ); |
- |
- decoder->num_hints += num_args / 2; |
- args = stack; |
- break; |
- |
- case cff_op_hintmask: |
- case cff_op_cntrmask: |
- FT_TRACE4(( op == cff_op_hintmask ? " hintmask" : " cntrmask" )); |
- |
- /* implement vstem when needed -- */ |
- /* the specification doesn't say it, but this also works */ |
- /* with the 'cntrmask' operator */ |
- /* */ |
- if ( num_args > 0 ) |
- { |
- if ( hinter ) |
- hinter->stems( hinter->hints, |
- 0, |
- num_args / 2, |
- args - ( num_args & ~1 ) ); |
- |
- decoder->num_hints += num_args / 2; |
- } |
- |
- /* In a valid charstring there must be at least one byte */ |
- /* after `hintmask' or `cntrmask' (e.g., for a `return' */ |
- /* instruction). Additionally, there must be space for */ |
- /* `num_hints' bits. */ |
- |
- if ( ( ip + ( ( decoder->num_hints + 7 ) >> 3 ) ) >= limit ) |
- goto Syntax_Error; |
- |
- if ( hinter ) |
- { |
- if ( op == cff_op_hintmask ) |
- hinter->hintmask( hinter->hints, |
- builder->current->n_points, |
- decoder->num_hints, |
- ip ); |
- else |
- hinter->counter( hinter->hints, |
- decoder->num_hints, |
- ip ); |
- } |
- |
-#ifdef FT_DEBUG_LEVEL_TRACE |
- { |
- FT_UInt maskbyte; |
- |
- |
- FT_TRACE4(( " (maskbytes:" )); |
- |
- for ( maskbyte = 0; |
- maskbyte < (FT_UInt)( ( decoder->num_hints + 7 ) >> 3 ); |
- maskbyte++, ip++ ) |
- FT_TRACE4(( " 0x%02X", *ip )); |
- |
- FT_TRACE4(( ")\n" )); |
- } |
-#else |
- ip += ( decoder->num_hints + 7 ) >> 3; |
-#endif |
- args = stack; |
- break; |
- |
- case cff_op_rmoveto: |
- FT_TRACE4(( " rmoveto\n" )); |
- |
- cff_builder_close_contour( builder ); |
- builder->path_begun = 0; |
- x += args[-2]; |
- y += args[-1]; |
- args = stack; |
- break; |
- |
- case cff_op_vmoveto: |
- FT_TRACE4(( " vmoveto\n" )); |
- |
- cff_builder_close_contour( builder ); |
- builder->path_begun = 0; |
- y += args[-1]; |
- args = stack; |
- break; |
- |
- case cff_op_hmoveto: |
- FT_TRACE4(( " hmoveto\n" )); |
- |
- cff_builder_close_contour( builder ); |
- builder->path_begun = 0; |
- x += args[-1]; |
- args = stack; |
- break; |
- |
- case cff_op_rlineto: |
- FT_TRACE4(( " rlineto\n" )); |
- |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, num_args / 2 ) ) |
- goto Fail; |
- |
- if ( num_args < 2 ) |
- goto Stack_Underflow; |
- |
- args -= num_args & ~1; |
- while ( args < decoder->top ) |
- { |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args += 2; |
- } |
- args = stack; |
- break; |
- |
- case cff_op_hlineto: |
- case cff_op_vlineto: |
- { |
- FT_Int phase = ( op == cff_op_hlineto ); |
- |
- |
- FT_TRACE4(( op == cff_op_hlineto ? " hlineto\n" |
- : " vlineto\n" )); |
- |
- if ( num_args < 0 ) |
- goto Stack_Underflow; |
- |
- /* there exist subsetted fonts (found in PDFs) */ |
- /* which call `hlineto' without arguments */ |
- if ( num_args == 0 ) |
- break; |
- |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, num_args ) ) |
- goto Fail; |
- |
- args = stack; |
- while ( args < decoder->top ) |
- { |
- if ( phase ) |
- x += args[0]; |
- else |
- y += args[0]; |
- |
- if ( cff_builder_add_point1( builder, x, y ) ) |
- goto Fail; |
- |
- args++; |
- phase ^= 1; |
- } |
- args = stack; |
- } |
- break; |
- |
- case cff_op_rrcurveto: |
- { |
- FT_Int nargs; |
- |
- |
- FT_TRACE4(( " rrcurveto\n" )); |
- |
- if ( num_args < 6 ) |
- goto Stack_Underflow; |
- |
- nargs = num_args - num_args % 6; |
- |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, nargs / 2 ) ) |
- goto Fail; |
- |
- args -= nargs; |
- while ( args < decoder->top ) |
- { |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[2]; |
- y += args[3]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[4]; |
- y += args[5]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args += 6; |
- } |
- args = stack; |
- } |
- break; |
- |
- case cff_op_vvcurveto: |
- { |
- FT_Int nargs; |
- |
- |
- FT_TRACE4(( " vvcurveto\n" )); |
- |
- if ( num_args < 4 ) |
- goto Stack_Underflow; |
- |
- /* if num_args isn't of the form 4n or 4n+1, */ |
- /* we enforce it by clearing the second bit */ |
- |
- nargs = num_args & ~2; |
- |
- if ( cff_builder_start_point( builder, x, y ) ) |
- goto Fail; |
- |
- args -= nargs; |
- |
- if ( nargs & 1 ) |
- { |
- x += args[0]; |
- args++; |
- nargs--; |
- } |
- |
- if ( cff_check_points( builder, 3 * ( nargs / 4 ) ) ) |
- goto Fail; |
- |
- while ( args < decoder->top ) |
- { |
- y += args[0]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[1]; |
- y += args[2]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- y += args[3]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args += 4; |
- } |
- args = stack; |
- } |
- break; |
- |
- case cff_op_hhcurveto: |
- { |
- FT_Int nargs; |
- |
- |
- FT_TRACE4(( " hhcurveto\n" )); |
- |
- if ( num_args < 4 ) |
- goto Stack_Underflow; |
- |
- /* if num_args isn't of the form 4n or 4n+1, */ |
- /* we enforce it by clearing the second bit */ |
- |
- nargs = num_args & ~2; |
- |
- if ( cff_builder_start_point( builder, x, y ) ) |
- goto Fail; |
- |
- args -= nargs; |
- if ( nargs & 1 ) |
- { |
- y += args[0]; |
- args++; |
- nargs--; |
- } |
- |
- if ( cff_check_points( builder, 3 * ( nargs / 4 ) ) ) |
- goto Fail; |
- |
- while ( args < decoder->top ) |
- { |
- x += args[0]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[1]; |
- y += args[2]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[3]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args += 4; |
- } |
- args = stack; |
- } |
- break; |
- |
- case cff_op_vhcurveto: |
- case cff_op_hvcurveto: |
- { |
- FT_Int phase; |
- FT_Int nargs; |
- |
- |
- FT_TRACE4(( op == cff_op_vhcurveto ? " vhcurveto\n" |
- : " hvcurveto\n" )); |
- |
- if ( cff_builder_start_point( builder, x, y ) ) |
- goto Fail; |
- |
- if ( num_args < 4 ) |
- goto Stack_Underflow; |
- |
- /* if num_args isn't of the form 8n, 8n+1, 8n+4, or 8n+5, */ |
- /* we enforce it by clearing the second bit */ |
- |
- nargs = num_args & ~2; |
- |
- args -= nargs; |
- if ( cff_check_points( builder, ( nargs / 4 ) * 3 ) ) |
- goto Stack_Underflow; |
- |
- phase = ( op == cff_op_hvcurveto ); |
- |
- while ( nargs >= 4 ) |
- { |
- nargs -= 4; |
- if ( phase ) |
- { |
- x += args[0]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[1]; |
- y += args[2]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- y += args[3]; |
- if ( nargs == 1 ) |
- x += args[4]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- } |
- else |
- { |
- y += args[0]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[1]; |
- y += args[2]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[3]; |
- if ( nargs == 1 ) |
- y += args[4]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- } |
- args += 4; |
- phase ^= 1; |
- } |
- args = stack; |
- } |
- break; |
- |
- case cff_op_rlinecurve: |
- { |
- FT_Int num_lines; |
- FT_Int nargs; |
- |
- |
- FT_TRACE4(( " rlinecurve\n" )); |
- |
- if ( num_args < 8 ) |
- goto Stack_Underflow; |
- |
- nargs = num_args & ~1; |
- num_lines = ( nargs - 6 ) / 2; |
- |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, num_lines + 3 ) ) |
- goto Fail; |
- |
- args -= nargs; |
- |
- /* first, add the line segments */ |
- while ( num_lines > 0 ) |
- { |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args += 2; |
- num_lines--; |
- } |
- |
- /* then the curve */ |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[2]; |
- y += args[3]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[4]; |
- y += args[5]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args = stack; |
- } |
- break; |
- |
- case cff_op_rcurveline: |
- { |
- FT_Int num_curves; |
- FT_Int nargs; |
- |
- |
- FT_TRACE4(( " rcurveline\n" )); |
- |
- if ( num_args < 8 ) |
- goto Stack_Underflow; |
- |
- nargs = num_args - 2; |
- nargs = nargs - nargs % 6 + 2; |
- num_curves = ( nargs - 2 ) / 6; |
- |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, num_curves * 3 + 2 ) ) |
- goto Fail; |
- |
- args -= nargs; |
- |
- /* first, add the curves */ |
- while ( num_curves > 0 ) |
- { |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[2]; |
- y += args[3]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- x += args[4]; |
- y += args[5]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args += 6; |
- num_curves--; |
- } |
- |
- /* then the final line */ |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- args = stack; |
- } |
- break; |
- |
- case cff_op_hflex1: |
- { |
- FT_Pos start_y; |
- |
- |
- FT_TRACE4(( " hflex1\n" )); |
- |
- /* adding five more points: 4 control points, 1 on-curve point */ |
- /* -- make sure we have enough space for the start point if it */ |
- /* needs to be added */ |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, 6 ) ) |
- goto Fail; |
- |
- /* record the starting point's y position for later use */ |
- start_y = y; |
- |
- /* first control point */ |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* second control point */ |
- x += args[2]; |
- y += args[3]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* join point; on curve, with y-value the same as the last */ |
- /* control point's y-value */ |
- x += args[4]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- |
- /* third control point, with y-value the same as the join */ |
- /* point's y-value */ |
- x += args[5]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* fourth control point */ |
- x += args[6]; |
- y += args[7]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* ending point, with y-value the same as the start */ |
- x += args[8]; |
- y = start_y; |
- cff_builder_add_point( builder, x, y, 1 ); |
- |
- args = stack; |
- break; |
- } |
- |
- case cff_op_hflex: |
- { |
- FT_Pos start_y; |
- |
- |
- FT_TRACE4(( " hflex\n" )); |
- |
- /* adding six more points; 4 control points, 2 on-curve points */ |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, 6 ) ) |
- goto Fail; |
- |
- /* record the starting point's y-position for later use */ |
- start_y = y; |
- |
- /* first control point */ |
- x += args[0]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* second control point */ |
- x += args[1]; |
- y += args[2]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* join point; on curve, with y-value the same as the last */ |
- /* control point's y-value */ |
- x += args[3]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- |
- /* third control point, with y-value the same as the join */ |
- /* point's y-value */ |
- x += args[4]; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* fourth control point */ |
- x += args[5]; |
- y = start_y; |
- cff_builder_add_point( builder, x, y, 0 ); |
- |
- /* ending point, with y-value the same as the start point's */ |
- /* y-value -- we don't add this point, though */ |
- x += args[6]; |
- cff_builder_add_point( builder, x, y, 1 ); |
- |
- args = stack; |
- break; |
- } |
- |
- case cff_op_flex1: |
- { |
- FT_Pos start_x, start_y; /* record start x, y values for */ |
- /* alter use */ |
- FT_Fixed dx = 0, dy = 0; /* used in horizontal/vertical */ |
- /* algorithm below */ |
- FT_Int horizontal, count; |
- FT_Fixed* temp; |
- |
- |
- FT_TRACE4(( " flex1\n" )); |
- |
- /* adding six more points; 4 control points, 2 on-curve points */ |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, 6 ) ) |
- goto Fail; |
- |
- /* record the starting point's x, y position for later use */ |
- start_x = x; |
- start_y = y; |
- |
- /* XXX: figure out whether this is supposed to be a horizontal */ |
- /* or vertical flex; the Type 2 specification is vague... */ |
- |
- temp = args; |
- |
- /* grab up to the last argument */ |
- for ( count = 5; count > 0; count-- ) |
- { |
- dx += temp[0]; |
- dy += temp[1]; |
- temp += 2; |
- } |
- |
- if ( dx < 0 ) |
- dx = -dx; |
- if ( dy < 0 ) |
- dy = -dy; |
- |
- /* strange test, but here it is... */ |
- horizontal = ( dx > dy ); |
- |
- for ( count = 5; count > 0; count-- ) |
- { |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, |
- (FT_Bool)( count == 3 ) ); |
- args += 2; |
- } |
- |
- /* is last operand an x- or y-delta? */ |
- if ( horizontal ) |
- { |
- x += args[0]; |
- y = start_y; |
- } |
- else |
- { |
- x = start_x; |
- y += args[0]; |
- } |
- |
- cff_builder_add_point( builder, x, y, 1 ); |
- |
- args = stack; |
- break; |
- } |
- |
- case cff_op_flex: |
- { |
- FT_UInt count; |
- |
- |
- FT_TRACE4(( " flex\n" )); |
- |
- if ( cff_builder_start_point( builder, x, y ) || |
- cff_check_points( builder, 6 ) ) |
- goto Fail; |
- |
- for ( count = 6; count > 0; count-- ) |
- { |
- x += args[0]; |
- y += args[1]; |
- cff_builder_add_point( builder, x, y, |
- (FT_Bool)( count == 4 || count == 1 ) ); |
- args += 2; |
- } |
- |
- args = stack; |
- } |
- break; |
- |
- case cff_op_seac: |
- FT_TRACE4(( " seac\n" )); |
- |
- error = cff_operator_seac( decoder, |
- args[0], args[1], args[2], |
- (FT_Int)( args[3] >> 16 ), |
- (FT_Int)( args[4] >> 16 ) ); |
- |
- /* add current outline to the glyph slot */ |
- FT_GlyphLoader_Add( builder->loader ); |
- |
- /* return now! */ |
- FT_TRACE4(( "\n" )); |
- return error; |
- |
- case cff_op_endchar: |
- FT_TRACE4(( " endchar\n" )); |
- |
- /* We are going to emulate the seac operator. */ |
- if ( num_args >= 4 ) |
- { |
- /* Save glyph width so that the subglyphs don't overwrite it. */ |
- FT_Pos glyph_width = decoder->glyph_width; |
- |
- |
- error = cff_operator_seac( decoder, |
- 0L, args[-4], args[-3], |
- (FT_Int)( args[-2] >> 16 ), |
- (FT_Int)( args[-1] >> 16 ) ); |
- |
- decoder->glyph_width = glyph_width; |
- } |
- else |
- { |
- if ( !error ) |
- error = FT_Err_Ok; |
- |
- cff_builder_close_contour( builder ); |
- |
- /* close hints recording session */ |
- if ( hinter ) |
- { |
- if ( hinter->close( hinter->hints, |
- builder->current->n_points ) ) |
- goto Syntax_Error; |
- |
- /* apply hints to the loaded glyph outline now */ |
- hinter->apply( hinter->hints, |
- builder->current, |
- (PSH_Globals)builder->hints_globals, |
- decoder->hint_mode ); |
- } |
- |
- /* add current outline to the glyph slot */ |
- FT_GlyphLoader_Add( builder->loader ); |
- } |
- |
- /* return now! */ |
- FT_TRACE4(( "\n" )); |
- return error; |
- |
- case cff_op_abs: |
- FT_TRACE4(( " abs\n" )); |
- |
- if ( args[0] < 0 ) |
- args[0] = -args[0]; |
- args++; |
- break; |
- |
- case cff_op_add: |
- FT_TRACE4(( " add\n" )); |
- |
- args[0] += args[1]; |
- args++; |
- break; |
- |
- case cff_op_sub: |
- FT_TRACE4(( " sub\n" )); |
- |
- args[0] -= args[1]; |
- args++; |
- break; |
- |
- case cff_op_div: |
- FT_TRACE4(( " div\n" )); |
- |
- args[0] = FT_DivFix( args[0], args[1] ); |
- args++; |
- break; |
- |
- case cff_op_neg: |
- FT_TRACE4(( " neg\n" )); |
- |
- args[0] = -args[0]; |
- args++; |
- break; |
- |
- case cff_op_random: |
- { |
- FT_Fixed Rand; |
- |
- |
- FT_TRACE4(( " rand\n" )); |
- |
- Rand = seed; |
- if ( Rand >= 0x8000L ) |
- Rand++; |
- |
- args[0] = Rand; |
- seed = FT_MulFix( seed, 0x10000L - seed ); |
- if ( seed == 0 ) |
- seed += 0x2873; |
- args++; |
- } |
- break; |
- |
- case cff_op_mul: |
- FT_TRACE4(( " mul\n" )); |
- |
- args[0] = FT_MulFix( args[0], args[1] ); |
- args++; |
- break; |
- |
- case cff_op_sqrt: |
- FT_TRACE4(( " sqrt\n" )); |
- |
- if ( args[0] > 0 ) |
- { |
- FT_Int count = 9; |
- FT_Fixed root = args[0]; |
- FT_Fixed new_root; |
- |
- |
- for (;;) |
- { |
- new_root = ( root + FT_DivFix( args[0], root ) + 1 ) >> 1; |
- if ( new_root == root || count <= 0 ) |
- break; |
- root = new_root; |
- } |
- args[0] = new_root; |
- } |
- else |
- args[0] = 0; |
- args++; |
- break; |
- |
- case cff_op_drop: |
- /* nothing */ |
- FT_TRACE4(( " drop\n" )); |
- |
- break; |
- |
- case cff_op_exch: |
- { |
- FT_Fixed tmp; |
- |
- |
- FT_TRACE4(( " exch\n" )); |
- |
- tmp = args[0]; |
- args[0] = args[1]; |
- args[1] = tmp; |
- args += 2; |
- } |
- break; |
- |
- case cff_op_index: |
- { |
- FT_Int idx = (FT_Int)( args[0] >> 16 ); |
- |
- |
- FT_TRACE4(( " index\n" )); |
- |
- if ( idx < 0 ) |
- idx = 0; |
- else if ( idx > num_args - 2 ) |
- idx = num_args - 2; |
- args[0] = args[-( idx + 1 )]; |
- args++; |
- } |
- break; |
- |
- case cff_op_roll: |
- { |
- FT_Int count = (FT_Int)( args[0] >> 16 ); |
- FT_Int idx = (FT_Int)( args[1] >> 16 ); |
- |
- |
- FT_TRACE4(( " roll\n" )); |
- |
- if ( count <= 0 ) |
- count = 1; |
- |
- args -= count; |
- if ( args < stack ) |
- goto Stack_Underflow; |
- |
- if ( idx >= 0 ) |
- { |
- while ( idx > 0 ) |
- { |
- FT_Fixed tmp = args[count - 1]; |
- FT_Int i; |
- |
- |
- for ( i = count - 2; i >= 0; i-- ) |
- args[i + 1] = args[i]; |
- args[0] = tmp; |
- idx--; |
- } |
- } |
- else |
- { |
- while ( idx < 0 ) |
- { |
- FT_Fixed tmp = args[0]; |
- FT_Int i; |
- |
- |
- for ( i = 0; i < count - 1; i++ ) |
- args[i] = args[i + 1]; |
- args[count - 1] = tmp; |
- idx++; |
- } |
- } |
- args += count; |
- } |
- break; |
- |
- case cff_op_dup: |
- FT_TRACE4(( " dup\n" )); |
- |
- args[1] = args[0]; |
- args += 2; |
- break; |
- |
- case cff_op_put: |
- { |
- FT_Fixed val = args[0]; |
- FT_Int idx = (FT_Int)( args[1] >> 16 ); |
- |
- |
- FT_TRACE4(( " put\n" )); |
- |
- if ( idx >= 0 && idx < CFF_MAX_TRANS_ELEMENTS ) |
- decoder->buildchar[idx] = val; |
- } |
- break; |
- |
- case cff_op_get: |
- { |
- FT_Int idx = (FT_Int)( args[0] >> 16 ); |
- FT_Fixed val = 0; |
- |
- |
- FT_TRACE4(( " get\n" )); |
- |
- if ( idx >= 0 && idx < CFF_MAX_TRANS_ELEMENTS ) |
- val = decoder->buildchar[idx]; |
- |
- args[0] = val; |
- args++; |
- } |
- break; |
- |
- case cff_op_store: |
- FT_TRACE4(( " store\n")); |
- |
- goto Unimplemented; |
- |
- case cff_op_load: |
- FT_TRACE4(( " load\n" )); |
- |
- goto Unimplemented; |
- |
- case cff_op_dotsection: |
- /* this operator is deprecated and ignored by the parser */ |
- FT_TRACE4(( " dotsection\n" )); |
- break; |
- |
- case cff_op_closepath: |
- /* this is an invalid Type 2 operator; however, there */ |
- /* exist fonts which are incorrectly converted from probably */ |
- /* Type 1 to CFF, and some parsers seem to accept it */ |
- |
- FT_TRACE4(( " closepath (invalid op)\n" )); |
- |
- args = stack; |
- break; |
- |
- case cff_op_hsbw: |
- /* this is an invalid Type 2 operator; however, there */ |
- /* exist fonts which are incorrectly converted from probably */ |
- /* Type 1 to CFF, and some parsers seem to accept it */ |
- |
- FT_TRACE4(( " hsbw (invalid op)\n" )); |
- |
- decoder->glyph_width = decoder->nominal_width + ( args[1] >> 16 ); |
- |
- decoder->builder.left_bearing.x = args[0]; |
- decoder->builder.left_bearing.y = 0; |
- |
- x = decoder->builder.pos_x + args[0]; |
- y = decoder->builder.pos_y; |
- args = stack; |
- break; |
- |
- case cff_op_sbw: |
- /* this is an invalid Type 2 operator; however, there */ |
- /* exist fonts which are incorrectly converted from probably */ |
- /* Type 1 to CFF, and some parsers seem to accept it */ |
- |
- FT_TRACE4(( " sbw (invalid op)\n" )); |
- |
- decoder->glyph_width = decoder->nominal_width + ( args[2] >> 16 ); |
- |
- decoder->builder.left_bearing.x = args[0]; |
- decoder->builder.left_bearing.y = args[1]; |
- |
- x = decoder->builder.pos_x + args[0]; |
- y = decoder->builder.pos_y + args[1]; |
- args = stack; |
- break; |
- |
- case cff_op_setcurrentpoint: |
- /* this is an invalid Type 2 operator; however, there */ |
- /* exist fonts which are incorrectly converted from probably */ |
- /* Type 1 to CFF, and some parsers seem to accept it */ |
- |
- FT_TRACE4(( " setcurrentpoint (invalid op)\n" )); |
- |
- x = decoder->builder.pos_x + args[0]; |
- y = decoder->builder.pos_y + args[1]; |
- args = stack; |
- break; |
- |
- case cff_op_callothersubr: |
- /* this is an invalid Type 2 operator; however, there */ |
- /* exist fonts which are incorrectly converted from probably */ |
- /* Type 1 to CFF, and some parsers seem to accept it */ |
- |
- FT_TRACE4(( " callothersubr (invalid op)\n" )); |
- |
- /* subsequent `pop' operands should add the arguments, */ |
- /* this is the implementation described for `unknown' other */ |
- /* subroutines in the Type1 spec. */ |
- /* */ |
- /* XXX Fix return arguments (see discussion below). */ |
- args -= 2 + ( args[-2] >> 16 ); |
- if ( args < stack ) |
- goto Stack_Underflow; |
- break; |
- |
- case cff_op_pop: |
- /* this is an invalid Type 2 operator; however, there */ |
- /* exist fonts which are incorrectly converted from probably */ |
- /* Type 1 to CFF, and some parsers seem to accept it */ |
- |
- FT_TRACE4(( " pop (invalid op)\n" )); |
- |
- /* XXX Increasing `args' is wrong: After a certain number of */ |
- /* `pop's we get a stack overflow. Reason for doing it is */ |
- /* code like this (actually found in a CFF font): */ |
- /* */ |
- /* 17 1 3 callothersubr */ |
- /* pop */ |
- /* callsubr */ |
- /* */ |
- /* Since we handle `callothersubr' as a no-op, and */ |
- /* `callsubr' needs at least one argument, `pop' can't be a */ |
- /* no-op too as it basically should be. */ |
- /* */ |
- /* The right solution would be to provide real support for */ |
- /* `callothersubr' as done in `t1decode.c', however, given */ |
- /* the fact that CFF fonts with `pop' are invalid, it is */ |
- /* questionable whether it is worth the time. */ |
- args++; |
- break; |
- |
- case cff_op_and: |
- { |
- FT_Fixed cond = args[0] && args[1]; |
- |
- |
- FT_TRACE4(( " and\n" )); |
- |
- args[0] = cond ? 0x10000L : 0; |
- args++; |
- } |
- break; |
- |
- case cff_op_or: |
- { |
- FT_Fixed cond = args[0] || args[1]; |
- |
- |
- FT_TRACE4(( " or\n" )); |
- |
- args[0] = cond ? 0x10000L : 0; |
- args++; |
- } |
- break; |
- |
- case cff_op_eq: |
- { |
- FT_Fixed cond = !args[0]; |
- |
- |
- FT_TRACE4(( " eq\n" )); |
- |
- args[0] = cond ? 0x10000L : 0; |
- args++; |
- } |
- break; |
- |
- case cff_op_ifelse: |
- { |
- FT_Fixed cond = ( args[2] <= args[3] ); |
- |
- |
- FT_TRACE4(( " ifelse\n" )); |
- |
- if ( !cond ) |
- args[0] = args[1]; |
- args++; |
- } |
- break; |
- |
- case cff_op_callsubr: |
- { |
- FT_UInt idx = (FT_UInt)( ( args[0] >> 16 ) + |
- decoder->locals_bias ); |
- |
- |
- FT_TRACE4(( " callsubr(%d)\n", idx )); |
- |
- if ( idx >= decoder->num_locals ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " invalid local subr index\n" )); |
- goto Syntax_Error; |
- } |
- |
- if ( zone - decoder->zones >= CFF_MAX_SUBRS_CALLS ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " too many nested subrs\n" )); |
- goto Syntax_Error; |
- } |
- |
- zone->cursor = ip; /* save current instruction pointer */ |
- |
- zone++; |
- zone->base = decoder->locals[idx]; |
- zone->limit = decoder->locals[idx + 1]; |
- zone->cursor = zone->base; |
- |
- if ( !zone->base || zone->limit == zone->base ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " invoking empty subrs\n" )); |
- goto Syntax_Error; |
- } |
- |
- decoder->zone = zone; |
- ip = zone->base; |
- limit = zone->limit; |
- } |
- break; |
- |
- case cff_op_callgsubr: |
- { |
- FT_UInt idx = (FT_UInt)( ( args[0] >> 16 ) + |
- decoder->globals_bias ); |
- |
- |
- FT_TRACE4(( " callgsubr(%d)\n", idx )); |
- |
- if ( idx >= decoder->num_globals ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " invalid global subr index\n" )); |
- goto Syntax_Error; |
- } |
- |
- if ( zone - decoder->zones >= CFF_MAX_SUBRS_CALLS ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " too many nested subrs\n" )); |
- goto Syntax_Error; |
- } |
- |
- zone->cursor = ip; /* save current instruction pointer */ |
- |
- zone++; |
- zone->base = decoder->globals[idx]; |
- zone->limit = decoder->globals[idx + 1]; |
- zone->cursor = zone->base; |
- |
- if ( !zone->base || zone->limit == zone->base ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " invoking empty subrs\n" )); |
- goto Syntax_Error; |
- } |
- |
- decoder->zone = zone; |
- ip = zone->base; |
- limit = zone->limit; |
- } |
- break; |
- |
- case cff_op_return: |
- FT_TRACE4(( " return\n" )); |
- |
- if ( decoder->zone <= decoder->zones ) |
- { |
- FT_ERROR(( "cff_decoder_parse_charstrings:" |
- " unexpected return\n" )); |
- goto Syntax_Error; |
- } |
- |
- decoder->zone--; |
- zone = decoder->zone; |
- ip = zone->cursor; |
- limit = zone->limit; |
- break; |
- |
- default: |
- Unimplemented: |
- FT_ERROR(( "Unimplemented opcode: %d", ip[-1] )); |
- |
- if ( ip[-1] == 12 ) |
- FT_ERROR(( " %d", ip[0] )); |
- FT_ERROR(( "\n" )); |
- |
- return FT_THROW( Unimplemented_Feature ); |
- } |
- |
- decoder->top = args; |
- |
- if ( decoder->top - stack >= CFF_MAX_OPERANDS ) |
- goto Stack_Overflow; |
- |
- } /* general operator processing */ |
- |
- } /* while ip < limit */ |
- |
- FT_TRACE4(( "..end..\n\n" )); |
- |
- Fail: |
- return error; |
- |
- Syntax_Error: |
- FT_TRACE4(( "cff_decoder_parse_charstrings: syntax error\n" )); |
- return FT_THROW( Invalid_File_Format ); |
- |
- Stack_Underflow: |
- FT_TRACE4(( "cff_decoder_parse_charstrings: stack underflow\n" )); |
- return FT_THROW( Too_Few_Arguments ); |
- |
- Stack_Overflow: |
- FT_TRACE4(( "cff_decoder_parse_charstrings: stack overflow\n" )); |
- return FT_THROW( Stack_Overflow ); |
- } |
- |
-#endif /* CFF_CONFIG_OPTION_OLD_ENGINE */ |
- |
- |
- /*************************************************************************/ |
- /*************************************************************************/ |
- /*************************************************************************/ |
- /********** *********/ |
- /********** *********/ |
- /********** 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; |
- |
- |
- *max_advance = 0; |
- |
- /* Initialize load decoder */ |
- cff_decoder_init( &decoder, face, 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 = cff_decoder_prepare( &decoder, size, glyph_index ); |
- if ( !error ) |
- error = cff_decoder_parse_charstrings( &decoder, |
- charstring, |
- charstring_len ); |
- |
- 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; |
- TT_Face face = (TT_Face)glyph->root.face; |
- FT_Bool hinting, scaled, force_scaling; |
- CFF_Font cff = (CFF_Font)face->extra.data; |
- |
- 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_Int)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 */ |
- |
- ( (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 vtmx table if we have one */ |
- if ( has_vertical_info ) |
- { |
- ( (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_ULong 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 = cff->top_font.font_dict.units_per_em; |
- sub_upm = 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 |
- CFF_Driver driver = (CFF_Driver)FT_FACE_DRIVER( face ); |
-#endif |
- |
- |
- FT_Byte* charstring; |
- FT_ULong charstring_len; |
- |
- |
- cff_decoder_init( &decoder, face, size, glyph, hinting, |
- FT_LOAD_TARGET_MODE( load_flags ) ); |
- |
- 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 = cff_decoder_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_CFF_HINTING_FREETYPE ) |
- error = cff_decoder_parse_charstrings( &decoder, |
- charstring, |
- charstring_len ); |
- else |
-#endif |
- { |
- error = cf2_decoder_parse_charstrings( &decoder, |
- 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 = cf2_decoder_parse_charstrings( &decoder, |
- 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 = 0; |
- 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 = charstring_len; |
- } |
- } |
- |
- Glyph_Build_Finished: |
- /* save new glyph tables, if no error */ |
- if ( !error ) |
- cff_builder_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_Vector advance; |
- FT_Bool has_vertical_info; |
- |
- |
- /* 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 vtmx 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; |
- |
- 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 ); |
- |
- if ( !( font_offset.x == 0 && |
- font_offset.y == 0 ) ) |
- 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; |
- |
- 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; |
- } |
- |
- |
-/* END */ |