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, 168 insertions, 0 deletions

diff --git a/third_party/freetype/src/base/ftadvanc.c b/third_party/freetype/src/base/ftadvanc.c
new file mode 100644
index 0000000000..18884efe19
--- /dev/null
+++ b/third_party/freetype/src/base/ftadvanc.c
@@ -0,0 +1,168 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftadvanc.c                                                             */
+/*                                                                         */
+/*    Quick computation of advance widths (body).                          */
+/*                                                                         */
+/*  Copyright 2008, 2009, 2011, 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 FT_INTERNAL_DEBUG_H
+
+#include FT_ADVANCES_H
+#include FT_INTERNAL_OBJECTS_H
+
+
+  static FT_Error
+  _ft_face_scale_advances( FT_Face    face,
+                           FT_Fixed*  advances,
+                           FT_UInt    count,
+                           FT_Int32   flags )
+  {
+    FT_Fixed  scale;
+    FT_UInt   nn;
+
+
+    if ( flags & FT_LOAD_NO_SCALE )
+      return FT_Err_Ok;
+
+    if ( face->size == NULL )
+      return FT_THROW( Invalid_Size_Handle );
+
+    if ( flags & FT_LOAD_VERTICAL_LAYOUT )
+      scale = face->size->metrics.y_scale;
+    else
+      scale = face->size->metrics.x_scale;
+
+    /* this must be the same scaling as to get linear{Hori,Vert}Advance */
+    /* (see `FT_Load_Glyph' implementation in src/base/ftobjs.c)        */
+
+    for ( nn = 0; nn < count; nn++ )
+      advances[nn] = FT_MulDiv( advances[nn], scale, 64 );
+
+    return FT_Err_Ok;
+  }
+
+
+   /* at the moment, we can perform fast advance retrieval only in */
+   /* the following cases:                                         */
+   /*                                                              */
+   /*  - unscaled load                                             */
+   /*  - unhinted load                                             */
+   /*  - light-hinted load                                         */
+
+#define LOAD_ADVANCE_FAST_CHECK( flags )                            \
+          ( flags & ( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING )    || \
+            FT_LOAD_TARGET_MODE( flags ) == FT_RENDER_MODE_LIGHT )
+
+
+  /* documentation is in ftadvanc.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FT_Get_Advance( FT_Face    face,
+                  FT_UInt    gindex,
+                  FT_Int32   flags,
+                  FT_Fixed  *padvance )
+  {
+    FT_Face_GetAdvancesFunc  func;
+
+
+    if ( !face )
+      return FT_THROW( Invalid_Face_Handle );
+
+    if ( !padvance )
+      return FT_THROW( Invalid_Argument );
+
+    if ( gindex >= (FT_UInt)face->num_glyphs )
+      return FT_THROW( Invalid_Glyph_Index );
+
+    func = face->driver->clazz->get_advances;
+    if ( func && LOAD_ADVANCE_FAST_CHECK( flags ) )
+    {
+      FT_Error  error;
+
+
+      error = func( face, gindex, 1, flags, padvance );
+      if ( !error )
+        return _ft_face_scale_advances( face, padvance, 1, flags );
+
+      if ( FT_ERR_NEQ( error, Unimplemented_Feature ) )
+        return error;
+    }
+
+    return FT_Get_Advances( face, gindex, 1, flags, padvance );
+  }
+
+
+  /* documentation is in ftadvanc.h */
+
+  FT_EXPORT_DEF( FT_Error )
+  FT_Get_Advances( FT_Face    face,
+                   FT_UInt    start,
+                   FT_UInt    count,
+                   FT_Int32   flags,
+                   FT_Fixed  *padvances )
+  {
+    FT_Face_GetAdvancesFunc  func;
+    FT_UInt                  num, end, nn;
+    FT_Error                 error = FT_Err_Ok;
+
+
+    if ( !face )
+      return FT_THROW( Invalid_Face_Handle );
+
+    if ( !padvances )
+      return FT_THROW( Invalid_Argument );
+
+    num = (FT_UInt)face->num_glyphs;
+    end = start + count;
+    if ( start >= num || end < start || end > num )
+      return FT_THROW( Invalid_Glyph_Index );
+
+    if ( count == 0 )
+      return FT_Err_Ok;
+
+    func = face->driver->clazz->get_advances;
+    if ( func && LOAD_ADVANCE_FAST_CHECK( flags ) )
+    {
+      error = func( face, start, count, flags, padvances );
+      if ( !error )
+        return _ft_face_scale_advances( face, padvances, count, flags );
+
+      if ( FT_ERR_NEQ( error, Unimplemented_Feature ) )
+        return error;
+    }
+
+    error = FT_Err_Ok;
+
+    if ( flags & FT_ADVANCE_FLAG_FAST_ONLY )
+      return FT_THROW( Unimplemented_Feature );
+
+    flags |= (FT_UInt32)FT_LOAD_ADVANCE_ONLY;
+    for ( nn = 0; nn < count; nn++ )
+    {
+      error = FT_Load_Glyph( face, start + nn, flags );
+      if ( error )
+        break;
+
+      /* scale from 26.6 to 16.16 */
+      padvances[nn] = ( flags & FT_LOAD_VERTICAL_LAYOUT )
+                      ? face->glyph->advance.y << 10
+                      : face->glyph->advance.x << 10;
+    }
+
+    return error;
+  }
+
+
+/* END */