core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1afm.c - Issue 815103002: Update freetype to 2.5.4.

Unified Diff: core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1afm.c

Issue 815103002: Update freetype to 2.5.4. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master

Patch Set: Adjust GYP and GN Created 6 years ago

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Index: core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1afm.c

diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1afm.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1afm.c

deleted file mode 100644

index b59225508e39f2a2e4fa095d2cc373ceeb420189..0000000000000000000000000000000000000000

--- a/core/src/fxge/fx_freetype/fxft2.5.01/src/type1/t1afm.c

+++ /dev/null

@@ -1,396 +0,0 @@

-/***************************************************************************/

-/* */

-/* t1afm.c */

-/* */

-/* AFM support for Type 1 fonts (body). */

-/* */

-/* 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 "t1afm.h"

-#include "../../include/freetype/internal/ftdebug.h"

-#include "../../include/freetype/internal/ftstream.h"

-#include "../../include/freetype/internal/psaux.h"

-#include "t1errors.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_t1afm

- FT_LOCAL_DEF( void )

- T1_Done_Metrics( FT_Memory memory,

- AFM_FontInfo fi )

- {

- FT_FREE( fi->KernPairs );

- fi->NumKernPair = 0;

- FT_FREE( fi->TrackKerns );

- fi->NumTrackKern = 0;

- FT_FREE( fi );

- }

- /* read a glyph name and return the equivalent glyph index */

- static FT_Int

- t1_get_index( const char* name,

- FT_Offset len,

- void* user_data )

- {

- T1_Font type1 = (T1_Font)user_data;

- FT_Int n;

- /* PS string/name length must be < 16-bit */

- if ( len > 0xFFFFU )

- return 0;

- for ( n = 0; n < type1->num_glyphs; n++ )

- {

- char* gname = (char*)type1->glyph_names[n];

- if ( gname && gname[0] == name[0] &&

- ft_strlen( gname ) == len &&

- ft_strncmp( gname, name, len ) == 0 )

- return n;

- }

- return 0;

- }

-#undef KERN_INDEX

-#define KERN_INDEX( g1, g2 ) ( ( (FT_ULong)(g1) << 16 ) | (g2) )

- /* compare two kerning pairs */

- FT_CALLBACK_DEF( int )

- compare_kern_pairs( const void* a,

- const void* b )

- {

- AFM_KernPair pair1 = (AFM_KernPair)a;

- AFM_KernPair pair2 = (AFM_KernPair)b;

- FT_ULong index1 = KERN_INDEX( pair1->index1, pair1->index2 );

- FT_ULong index2 = KERN_INDEX( pair2->index1, pair2->index2 );

- if ( index1 > index2 )

- return 1;

- else if ( index1 < index2 )

- return -1;

- else

- return 0;

- }

- /* parse a PFM file -- for now, only read the kerning pairs */

- static FT_Error

- T1_Read_PFM( FT_Face t1_face,

- FT_Stream stream,

- AFM_FontInfo fi )

- {

- FT_Error error = FT_Err_Ok;

- FT_Memory memory = stream->memory;

- FT_Byte* start;

- FT_Byte* limit;

- FT_Byte* p;

- AFM_KernPair kp;

- FT_Int width_table_length;

- FT_CharMap oldcharmap;

- FT_CharMap charmap;

- FT_Int n;

- start = (FT_Byte*)stream->cursor;

- limit = (FT_Byte*)stream->limit;

- /* Figure out how long the width table is. */

- /* This info is a little-endian short at offset 99. */

- p = start + 99;

- if ( p + 2 > limit )

- {

- error = FT_THROW( Unknown_File_Format );

- goto Exit;

- }

- width_table_length = FT_PEEK_USHORT_LE( p );

- p += 18 + width_table_length;

- if ( p + 0x12 > limit || FT_PEEK_USHORT_LE( p ) < 0x12 )

- /* extension table is probably optional */

- goto Exit;

- /* Kerning offset is 14 bytes from start of extensions table. */

- p += 14;

- p = start + FT_PEEK_ULONG_LE( p );

- if ( p == start )

- /* zero offset means no table */

- goto Exit;

- if ( p + 2 > limit )

- {

- error = FT_THROW( Unknown_File_Format );

- goto Exit;

- }

- fi->NumKernPair = FT_PEEK_USHORT_LE( p );

- p += 2;

- if ( p + 4 * fi->NumKernPair > limit )

- {

- error = FT_THROW( Unknown_File_Format );

- goto Exit;

- }

- /* Actually, kerning pairs are simply optional! */

- if ( fi->NumKernPair == 0 )

- goto Exit;

- /* allocate the pairs */

- if ( FT_QNEW_ARRAY( fi->KernPairs, fi->NumKernPair ) )

- goto Exit;

- /* now, read each kern pair */

- kp = fi->KernPairs;

- limit = p + 4 * fi->NumKernPair;

- /* PFM kerning data are stored by encoding rather than glyph index, */

- /* so find the PostScript charmap of this font and install it */

- /* temporarily. If we find no PostScript charmap, then just use */

- /* the default and hope it is the right one. */

- oldcharmap = t1_face->charmap;

- charmap = NULL;

- for ( n = 0; n < t1_face->num_charmaps; n++ )

- {

- charmap = t1_face->charmaps[n];

- /* check against PostScript pseudo platform */

- if ( charmap->platform_id == 7 )

- {

- error = FT_Set_Charmap( t1_face, charmap );

- if ( error )

- goto Exit;

- break;

- }

- /* Kerning info is stored as: */

- /* */

- /* encoding of first glyph (1 byte) */

- /* encoding of second glyph (1 byte) */

- /* offset (little-endian short) */

- for ( ; p < limit ; p += 4 )

- {

- kp->index1 = FT_Get_Char_Index( t1_face, p[0] );

- kp->index2 = FT_Get_Char_Index( t1_face, p[1] );

- kp->x = (FT_Int)FT_PEEK_SHORT_LE(p + 2);

- kp->y = 0;

- kp++;

- }

- if ( oldcharmap != NULL )

- error = FT_Set_Charmap( t1_face, oldcharmap );

- if ( error )

- goto Exit;

- /* now, sort the kern pairs according to their glyph indices */

- ft_qsort( fi->KernPairs, fi->NumKernPair, sizeof ( AFM_KernPairRec ),

- compare_kern_pairs );

- Exit:

- if ( error )

- {

- FT_FREE( fi->KernPairs );

- fi->NumKernPair = 0;

- }

- return error;

- }

- /* parse a metrics file -- either AFM or PFM depending on what */

- /* it turns out to be */

- FT_LOCAL_DEF( FT_Error )

- T1_Read_Metrics( FT_Face t1_face,

- FT_Stream stream )

- {

- PSAux_Service psaux;

- FT_Memory memory = stream->memory;

- AFM_ParserRec parser;

- AFM_FontInfo fi = NULL;

- FT_Error error = FT_ERR( Unknown_File_Format );

- T1_Font t1_font = &( (T1_Face)t1_face )->type1;

- if ( FT_NEW( fi ) ||

- FT_FRAME_ENTER( stream->size ) )

- goto Exit;

- fi->FontBBox = t1_font->font_bbox;

- fi->Ascender = t1_font->font_bbox.yMax;

- fi->Descender = t1_font->font_bbox.yMin;

- psaux = (PSAux_Service)( (T1_Face)t1_face )->psaux;

- if ( psaux->afm_parser_funcs )

- {

- error = psaux->afm_parser_funcs->init( &parser,

- stream->memory,

- stream->cursor,

- stream->limit );

- if ( !error )

- {

- parser.FontInfo = fi;

- parser.get_index = t1_get_index;

- parser.user_data = t1_font;

- error = psaux->afm_parser_funcs->parse( &parser );

- psaux->afm_parser_funcs->done( &parser );

- }

- if ( FT_ERR_EQ( error, Unknown_File_Format ) )

- {

- FT_Byte* start = stream->cursor;

- /* MS Windows allows versions up to 0x3FF without complaining */

- if ( stream->size > 6 &&

- start[1] < 4 &&

- FT_PEEK_ULONG_LE( start + 2 ) == stream->size )

- error = T1_Read_PFM( t1_face, stream, fi );

- }

- if ( !error )

- {

- t1_font->font_bbox = fi->FontBBox;

- t1_face->bbox.xMin = fi->FontBBox.xMin >> 16;

- t1_face->bbox.yMin = fi->FontBBox.yMin >> 16;

- /* no `U' suffix here to 0xFFFF! */

- t1_face->bbox.xMax = ( fi->FontBBox.xMax + 0xFFFF ) >> 16;

- t1_face->bbox.yMax = ( fi->FontBBox.yMax + 0xFFFF ) >> 16;

- /* no `U' suffix here to 0x8000! */

- t1_face->ascender = (FT_Short)( ( fi->Ascender + 0x8000 ) >> 16 );

- t1_face->descender = (FT_Short)( ( fi->Descender + 0x8000 ) >> 16 );

- if ( fi->NumKernPair )

- {

- t1_face->face_flags |= FT_FACE_FLAG_KERNING;

- ( (T1_Face)t1_face )->afm_data = fi;

- fi = NULL;

- }

- FT_FRAME_EXIT();

- Exit:

- if ( fi != NULL )

- T1_Done_Metrics( memory, fi );

- return error;

- }

- /* find the kerning for a given glyph pair */

- FT_LOCAL_DEF( void )

- T1_Get_Kerning( AFM_FontInfo fi,

- FT_UInt glyph1,

- FT_UInt glyph2,

- FT_Vector* kerning )

- {

- AFM_KernPair min, mid, max;

- FT_ULong idx = KERN_INDEX( glyph1, glyph2 );

- /* simple binary search */

- min = fi->KernPairs;

- max = min + fi->NumKernPair - 1;

- while ( min <= max )

- {

- FT_ULong midi;

- mid = min + ( max - min ) / 2;

- midi = KERN_INDEX( mid->index1, mid->index2 );

- if ( midi == idx )

- {

- kerning->x = mid->x;

- kerning->y = mid->y;

- return;

- }

- if ( midi < idx )

- min = mid + 1;

- else

- max = mid - 1;

- }

- kerning->x = 0;

- kerning->y = 0;

- }

- FT_LOCAL_DEF( FT_Error )

- T1_Get_Track_Kerning( FT_Face face,

- FT_Fixed ptsize,

- FT_Int degree,

- FT_Fixed* kerning )

- {

- AFM_FontInfo fi = (AFM_FontInfo)( (T1_Face)face )->afm_data;

- FT_Int i;

- if ( !fi )

- return FT_THROW( Invalid_Argument );

- for ( i = 0; i < fi->NumTrackKern; i++ )

- {

- AFM_TrackKern tk = fi->TrackKerns + i;

- if ( tk->degree != degree )

- continue;

- if ( ptsize < tk->min_ptsize )

- *kerning = tk->min_kern;

- else if ( ptsize > tk->max_ptsize )

- *kerning = tk->max_kern;

- else

- {

- *kerning = FT_MulDiv( ptsize - tk->min_ptsize,

- tk->max_kern - tk->min_kern,

- tk->max_ptsize - tk->min_ptsize ) +

- tk->min_kern;

- }

- return FT_Err_Ok;

- }

-/* END */