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, 519 insertions, 0 deletions

diff --git a/third_party/freetype/src/type1/t1gload.c b/third_party/freetype/src/type1/t1gload.c
new file mode 100644
index 0000000000..af102fd85e
--- /dev/null
+++ b/third_party/freetype/src/type1/t1gload.c
@@ -0,0 +1,519 @@
+/***************************************************************************/
+/*                                                                         */
+/*  t1gload.c                                                              */
+/*                                                                         */
+/*    Type 1 Glyph Loader (body).                                          */
+/*                                                                         */
+/*  Copyright 1996-2006, 2008-2010, 2013, 2014 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 "t1gload.h"
+#include FT_INTERNAL_CALC_H
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_OUTLINE_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_t1gload
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /**********                                                      *********/
+  /**********            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.                                         *********/
+  /**********                                                      *********/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  FT_LOCAL_DEF( FT_Error )
+  T1_Parse_Glyph_And_Get_Char_String( T1_Decoder  decoder,
+                                      FT_UInt     glyph_index,
+                                      FT_Data*    char_string )
+  {
+    T1_Face   face  = (T1_Face)decoder->builder.face;
+    T1_Font   type1 = &face->type1;
+    FT_Error  error = FT_Err_Ok;
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+    FT_Incremental_InterfaceRec *inc =
+                      face->root.internal->incremental_interface;
+#endif
+
+
+    decoder->font_matrix = type1->font_matrix;
+    decoder->font_offset = type1->font_offset;
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+
+    /* For incremental fonts get the character data using the */
+    /* callback function.                                     */
+    if ( inc )
+      error = inc->funcs->get_glyph_data( inc->object,
+                                          glyph_index, char_string );
+    else
+
+#endif /* FT_CONFIG_OPTION_INCREMENTAL */
+
+    /* For ordinary fonts get the character data stored in the face record. */
+    {
+      char_string->pointer = type1->charstrings[glyph_index];
+      char_string->length  = (FT_Int)type1->charstrings_len[glyph_index];
+    }
+
+    if ( !error )
+      error = decoder->funcs.parse_charstrings(
+                decoder, (FT_Byte*)char_string->pointer,
+                char_string->length );
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+
+    /* Incremental fonts can optionally override the metrics. */
+    if ( !error && inc && inc->funcs->get_glyph_metrics )
+    {
+      FT_Incremental_MetricsRec  metrics;
+
+
+      metrics.bearing_x = FIXED_TO_INT( decoder->builder.left_bearing.x );
+      metrics.bearing_y = 0;
+      metrics.advance   = FIXED_TO_INT( decoder->builder.advance.x );
+      metrics.advance_v = FIXED_TO_INT( decoder->builder.advance.y );
+
+      error = inc->funcs->get_glyph_metrics( inc->object,
+                                             glyph_index, FALSE, &metrics );
+
+      decoder->builder.left_bearing.x = INT_TO_FIXED( metrics.bearing_x );
+      decoder->builder.advance.x      = INT_TO_FIXED( metrics.advance );
+      decoder->builder.advance.y      = INT_TO_FIXED( metrics.advance_v );
+    }
+
+#endif /* FT_CONFIG_OPTION_INCREMENTAL */
+
+    return error;
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  T1_Parse_Glyph( T1_Decoder  decoder,
+                  FT_UInt     glyph_index )
+  {
+    FT_Data   glyph_data;
+    FT_Error  error = T1_Parse_Glyph_And_Get_Char_String(
+                        decoder, glyph_index, &glyph_data );
+
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+
+    if ( !error )
+    {
+      T1_Face  face = (T1_Face)decoder->builder.face;
+
+
+      if ( face->root.internal->incremental_interface )
+        face->root.internal->incremental_interface->funcs->free_glyph_data(
+          face->root.internal->incremental_interface->object,
+          &glyph_data );
+    }
+
+#endif /* FT_CONFIG_OPTION_INCREMENTAL */
+
+    return error;
+  }
+
+
+  FT_LOCAL_DEF( FT_Error )
+  T1_Compute_Max_Advance( T1_Face  face,
+                          FT_Pos*  max_advance )
+  {
+    FT_Error       error;
+    T1_DecoderRec  decoder;
+    FT_Int         glyph_index;
+    T1_Font        type1 = &face->type1;
+    PSAux_Service  psaux = (PSAux_Service)face->psaux;
+
+
+    FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
+
+    *max_advance = 0;
+
+    /* initialize load decoder */
+    error = psaux->t1_decoder_funcs->init( &decoder,
+                                           (FT_Face)face,
+                                           0, /* size       */
+                                           0, /* glyph slot */
+                                           (FT_Byte**)type1->glyph_names,
+                                           face->blend,
+                                           0,
+                                           FT_RENDER_MODE_NORMAL,
+                                           T1_Parse_Glyph );
+    if ( error )
+      return error;
+
+    decoder.builder.metrics_only = 1;
+    decoder.builder.load_points  = 0;
+
+    decoder.num_subrs     = type1->num_subrs;
+    decoder.subrs         = type1->subrs;
+    decoder.subrs_len     = type1->subrs_len;
+
+    decoder.buildchar     = face->buildchar;
+    decoder.len_buildchar = face->len_buildchar;
+
+    *max_advance = 0;
+
+    /* for each glyph, parse the glyph charstring and extract */
+    /* the advance width                                      */
+    for ( glyph_index = 0; glyph_index < type1->num_glyphs; glyph_index++ )
+    {
+      /* now get load the unscaled outline */
+      (void)T1_Parse_Glyph( &decoder, glyph_index );
+      if ( glyph_index == 0 || decoder.builder.advance.x > *max_advance )
+        *max_advance = decoder.builder.advance.x;
+
+      /* ignore the error if one occurred - skip to next glyph */
+    }
+
+    psaux->t1_decoder_funcs->done( &decoder );
+
+    return FT_Err_Ok;
+  }
+
+
+  FT_LOCAL_DEF( FT_Error )
+  T1_Get_Advances( FT_Face    t1face,        /* T1_Face */
+                   FT_UInt    first,
+                   FT_UInt    count,
+                   FT_Int32   load_flags,
+                   FT_Fixed*  advances )
+  {
+    T1_Face        face  = (T1_Face)t1face;
+    T1_DecoderRec  decoder;
+    T1_Font        type1 = &face->type1;
+    PSAux_Service  psaux = (PSAux_Service)face->psaux;
+    FT_UInt        nn;
+    FT_Error       error;
+
+
+    if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
+    {
+      for ( nn = 0; nn < count; nn++ )
+        advances[nn] = 0;
+
+      return FT_Err_Ok;
+    }
+
+    error = psaux->t1_decoder_funcs->init( &decoder,
+                                           (FT_Face)face,
+                                           0, /* size       */
+                                           0, /* glyph slot */
+                                           (FT_Byte**)type1->glyph_names,
+                                           face->blend,
+                                           0,
+                                           FT_RENDER_MODE_NORMAL,
+                                           T1_Parse_Glyph );
+    if ( error )
+      return error;
+
+    decoder.builder.metrics_only = 1;
+    decoder.builder.load_points  = 0;
+
+    decoder.num_subrs = type1->num_subrs;
+    decoder.subrs     = type1->subrs;
+    decoder.subrs_len = type1->subrs_len;
+
+    decoder.buildchar     = face->buildchar;
+    decoder.len_buildchar = face->len_buildchar;
+
+    for ( nn = 0; nn < count; nn++ )
+    {
+      error = T1_Parse_Glyph( &decoder, first + nn );
+      if ( !error )
+        advances[nn] = FIXED_TO_INT( decoder.builder.advance.x );
+      else
+        advances[nn] = 0;
+    }
+
+    return FT_Err_Ok;
+  }
+
+
+  FT_LOCAL_DEF( FT_Error )
+  T1_Load_Glyph( FT_GlyphSlot  t1glyph,          /* T1_GlyphSlot */
+                 FT_Size       t1size,           /* T1_Size      */
+                 FT_UInt       glyph_index,
+                 FT_Int32      load_flags )
+  {
+    T1_GlyphSlot            glyph = (T1_GlyphSlot)t1glyph;
+    FT_Error                error;
+    T1_DecoderRec           decoder;
+    T1_Face                 face = (T1_Face)t1glyph->face;
+    FT_Bool                 hinting;
+    T1_Font                 type1         = &face->type1;
+    PSAux_Service           psaux         = (PSAux_Service)face->psaux;
+    const T1_Decoder_Funcs  decoder_funcs = psaux->t1_decoder_funcs;
+
+    FT_Matrix               font_matrix;
+    FT_Vector               font_offset;
+    FT_Data                 glyph_data;
+    FT_Bool                 must_finish_decoder = FALSE;
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+    FT_Bool                 glyph_data_loaded = 0;
+#endif
+
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+    if ( glyph_index >= (FT_UInt)face->root.num_glyphs &&
+         !face->root.internal->incremental_interface   )
+#else
+    if ( glyph_index >= (FT_UInt)face->root.num_glyphs )
+#endif /* FT_CONFIG_OPTION_INCREMENTAL */
+    {
+      error = FT_THROW( Invalid_Argument );
+      goto Exit;
+    }
+
+    FT_TRACE1(( "T1_Load_Glyph: glyph index %d\n", glyph_index ));
+
+    FT_ASSERT( ( face->len_buildchar == 0 ) == ( face->buildchar == NULL ) );
+
+    if ( load_flags & FT_LOAD_NO_RECURSE )
+      load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING;
+
+    if ( t1size )
+    {
+      glyph->x_scale = t1size->metrics.x_scale;
+      glyph->y_scale = t1size->metrics.y_scale;
+    }
+    else
+    {
+      glyph->x_scale = 0x10000L;
+      glyph->y_scale = 0x10000L;
+    }
+
+    t1glyph->outline.n_points   = 0;
+    t1glyph->outline.n_contours = 0;
+
+    hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE   ) == 0 &&
+                       ( load_flags & FT_LOAD_NO_HINTING ) == 0 );
+
+    t1glyph->format = FT_GLYPH_FORMAT_OUTLINE;
+
+    error = decoder_funcs->init( &decoder,
+                                 t1glyph->face,
+                                 t1size,
+                                 t1glyph,
+                                 (FT_Byte**)type1->glyph_names,
+                                 face->blend,
+                                 FT_BOOL( hinting ),
+                                 FT_LOAD_TARGET_MODE( load_flags ),
+                                 T1_Parse_Glyph );
+    if ( error )
+      goto Exit;
+
+    must_finish_decoder = TRUE;
+
+    decoder.builder.no_recurse = FT_BOOL(
+                                   ( load_flags & FT_LOAD_NO_RECURSE ) != 0 );
+
+    decoder.num_subrs     = type1->num_subrs;
+    decoder.subrs         = type1->subrs;
+    decoder.subrs_len     = type1->subrs_len;
+
+    decoder.buildchar     = face->buildchar;
+    decoder.len_buildchar = face->len_buildchar;
+
+    /* now load the unscaled outline */
+    error = T1_Parse_Glyph_And_Get_Char_String( &decoder, glyph_index,
+                                                &glyph_data );
+    if ( error )
+      goto Exit;
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+    glyph_data_loaded = 1;
+#endif
+
+    font_matrix = decoder.font_matrix;
+    font_offset = decoder.font_offset;
+
+    /* save new glyph tables */
+    decoder_funcs->done( &decoder );
+
+    must_finish_decoder = FALSE;
+
+    /* now, set the metrics -- this is rather simple, as   */
+    /* the left side bearing is the xMin, and the top side */
+    /* bearing the yMax                                    */
+    if ( !error )
+    {
+      t1glyph->outline.flags &= FT_OUTLINE_OWNER;
+      t1glyph->outline.flags |= FT_OUTLINE_REVERSE_FILL;
+
+      /* for composite glyphs, return only left side bearing and */
+      /* advance width                                           */
+      if ( load_flags & FT_LOAD_NO_RECURSE )
+      {
+        FT_Slot_Internal  internal = t1glyph->internal;
+
+
+        t1glyph->metrics.horiBearingX =
+          FIXED_TO_INT( decoder.builder.left_bearing.x );
+        t1glyph->metrics.horiAdvance  =
+          FIXED_TO_INT( decoder.builder.advance.x );
+
+        internal->glyph_matrix      = font_matrix;
+        internal->glyph_delta       = font_offset;
+        internal->glyph_transformed = 1;
+      }
+      else
+      {
+        FT_BBox            cbox;
+        FT_Glyph_Metrics*  metrics = &t1glyph->metrics;
+        FT_Vector          advance;
+
+
+        /* copy the _unscaled_ advance width */
+        metrics->horiAdvance =
+          FIXED_TO_INT( decoder.builder.advance.x );
+        t1glyph->linearHoriAdvance =
+          FIXED_TO_INT( decoder.builder.advance.x );
+        t1glyph->internal->glyph_transformed = 0;
+
+        if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
+        {
+          /* make up vertical ones */
+          metrics->vertAdvance = ( face->type1.font_bbox.yMax -
+                                   face->type1.font_bbox.yMin ) >> 16;
+          t1glyph->linearVertAdvance = metrics->vertAdvance;
+        }
+        else
+        {
+          metrics->vertAdvance =
+            FIXED_TO_INT( decoder.builder.advance.y );
+          t1glyph->linearVertAdvance =
+            FIXED_TO_INT( decoder.builder.advance.y );
+        }
+
+        t1glyph->format = FT_GLYPH_FORMAT_OUTLINE;
+
+        if ( t1size && t1size->metrics.y_ppem < 24 )
+          t1glyph->outline.flags |= FT_OUTLINE_HIGH_PRECISION;
+
+#if 1
+        /* apply the font matrix, if any */
+        if ( font_matrix.xx != 0x10000L || font_matrix.yy != font_matrix.xx ||
+             font_matrix.xy != 0        || font_matrix.yx != 0              )
+          FT_Outline_Transform( &t1glyph->outline, &font_matrix );
+
+        if ( font_offset.x || font_offset.y )
+          FT_Outline_Translate( &t1glyph->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;
+#endif
+
+        if ( ( load_flags & FT_LOAD_NO_SCALE ) == 0 )
+        {
+          /* scale the outline and the metrics */
+          FT_Int       n;
+          FT_Outline*  cur = decoder.builder.base;
+          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 we are not hinting */
+          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( &t1glyph->outline, &cbox );
+
+        metrics->width  = cbox.xMax - cbox.xMin;
+        metrics->height = cbox.yMax - cbox.yMin;
+
+        metrics->horiBearingX = cbox.xMin;
+        metrics->horiBearingY = cbox.yMax;
+
+        if ( load_flags & FT_LOAD_VERTICAL_LAYOUT )
+        {
+          /* make up vertical ones */
+          ft_synthesize_vertical_metrics( metrics,
+                                          metrics->vertAdvance );
+        }
+      }
+
+      /* Set control data to the glyph charstrings.  Note that this is */
+      /* _not_ zero-terminated.                                        */
+      t1glyph->control_data = (FT_Byte*)glyph_data.pointer;
+      t1glyph->control_len  = glyph_data.length;
+    }
+
+
+  Exit:
+
+#ifdef FT_CONFIG_OPTION_INCREMENTAL
+    if ( glyph_data_loaded && face->root.internal->incremental_interface )
+    {
+      face->root.internal->incremental_interface->funcs->free_glyph_data(
+        face->root.internal->incremental_interface->object,
+        &glyph_data );
+
+      /* Set the control data to null - it is no longer available if   */
+      /* loaded incrementally.                                         */
+      t1glyph->control_data = 0;
+      t1glyph->control_len  = 0;
+    }
+#endif
+
+    if ( must_finish_decoder )
+      decoder_funcs->done( &decoder );
+
+    return error;
+  }
+
+
+/* END */