XFA: merge patch from CL 815103002

Update freetype to 2.5.4.

Put freetype into third_party directory, cleaning up header files.

Previously freetype header files are in core/src/fxge/freetype and core/include/thirdparties. There were also multiple fx_freetype.h.

This patch removes the additional Foxit wrapper to make further update easier.

Notice, for original freetype source code, the following files are modified and need to be updated accordingly in future update:

third_party/freetype/include/config/ftmodule.h
third_party/freetype/include/config/ftoption.h

BUG=407341
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/815103002

1 files changed, 396 insertions, 0 deletions

diff --git a/third_party/freetype/src/type1/t1afm.c b/third_party/freetype/src/type1/t1afm.c
new file mode 100644
index 0000000000..de9c1997c4
--- /dev/null
+++ b/third_party/freetype/src/type1/t1afm.c
@@ -0,0 +1,396 @@
+/***************************************************************************/
+/*                                                                         */
+/*  t1afm.c                                                                */
+/*                                                                         */
+/*    AFM support for Type 1 fonts (body).                                 */
+/*                                                                         */
+/*  Copyright 1996-2011, 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 <ft2build.h>
+#include "t1afm.h"
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_INTERNAL_POSTSCRIPT_AUX_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 */