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, 244 insertions, 0 deletions

diff --git a/third_party/freetype/include/internal/autohint.h b/third_party/freetype/include/internal/autohint.h
new file mode 100644
index 0000000000..545de938c2
--- /dev/null
+++ b/third_party/freetype/include/internal/autohint.h
@@ -0,0 +1,244 @@
+/***************************************************************************/
+/*                                                                         */
+/*  autohint.h                                                             */
+/*                                                                         */
+/*    High-level `autohint' module-specific interface (specification).     */
+/*                                                                         */
+/*  Copyright 1996-2002, 2007, 2009, 2012 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.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The auto-hinter is used to load and automatically hint glyphs if a    */
+  /* format-specific hinter isn't available.                               */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+#ifndef __AUTOHINT_H__
+#define __AUTOHINT_H__
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* A small technical note regarding automatic hinting in order to        */
+  /* clarify this module interface.                                        */
+  /*                                                                       */
+  /* An automatic hinter might compute two kinds of data for a given face: */
+  /*                                                                       */
+  /* - global hints: Usually some metrics that describe global properties  */
+  /*                 of the face.  It is computed by scanning more or less */
+  /*                 aggressively the glyphs in the face, and thus can be  */
+  /*                 very slow to compute (even if the size of global      */
+  /*                 hints is really small).                               */
+  /*                                                                       */
+  /* - glyph hints:  These describe some important features of the glyph   */
+  /*                 outline, as well as how to align them.  They are      */
+  /*                 generally much faster to compute than global hints.   */
+  /*                                                                       */
+  /* The current FreeType auto-hinter does a pretty good job while         */
+  /* performing fast computations for both global and glyph hints.         */
+  /* However, we might be interested in introducing more complex and       */
+  /* powerful algorithms in the future, like the one described in the John */
+  /* D. Hobby paper, which unfortunately requires a lot more horsepower.   */
+  /*                                                                       */
+  /* Because a sufficiently sophisticated font management system would     */
+  /* typically implement an LRU cache of opened face objects to reduce     */
+  /* memory usage, it is a good idea to be able to avoid recomputing       */
+  /* global hints every time the same face is re-opened.                   */
+  /*                                                                       */
+  /* We thus provide the ability to cache global hints outside of the face */
+  /* object, in order to speed up font re-opening time.  Of course, this   */
+  /* feature is purely optional, so most client programs won't even notice */
+  /* it.                                                                   */
+  /*                                                                       */
+  /* I initially thought that it would be a good idea to cache the glyph   */
+  /* hints too.  However, my general idea now is that if you really need   */
+  /* to cache these too, you are simply in need of a new font format,      */
+  /* where all this information could be stored within the font file and   */
+  /* decoded on the fly.                                                   */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+
+
+FT_BEGIN_HEADER
+
+
+  typedef struct FT_AutoHinterRec_  *FT_AutoHinter;
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <FuncType>                                                            */
+  /*    FT_AutoHinter_GlobalGetFunc                                        */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Retrieve the global hints computed for a given face object.  The   */
+  /*    resulting data is dissociated from the face and will survive a     */
+  /*    call to FT_Done_Face().  It must be discarded through the API      */
+  /*    FT_AutoHinter_GlobalDoneFunc().                                    */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    hinter       :: A handle to the source auto-hinter.                */
+  /*                                                                       */
+  /*    face         :: A handle to the source face object.                */
+  /*                                                                       */
+  /* <Output>                                                              */
+  /*    global_hints :: A typeless pointer to the global hints.            */
+  /*                                                                       */
+  /*    global_len   :: The size in bytes of the global hints.             */
+  /*                                                                       */
+  typedef void
+  (*FT_AutoHinter_GlobalGetFunc)( FT_AutoHinter  hinter,
+                                  FT_Face        face,
+                                  void**         global_hints,
+                                  long*          global_len );
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <FuncType>                                                            */
+  /*    FT_AutoHinter_GlobalDoneFunc                                       */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    Discard the global hints retrieved through                         */
+  /*    FT_AutoHinter_GlobalGetFunc().  This is the only way these hints   */
+  /*    are freed from memory.                                             */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    hinter :: A handle to the auto-hinter module.                      */
+  /*                                                                       */
+  /*    global :: A pointer to retrieved global hints to discard.          */
+  /*                                                                       */
+  typedef void
+  (*FT_AutoHinter_GlobalDoneFunc)( FT_AutoHinter  hinter,
+                                   void*          global );
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <FuncType>                                                            */
+  /*    FT_AutoHinter_GlobalResetFunc                                      */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    This function is used to recompute the global metrics in a given   */
+  /*    font.  This is useful when global font data changes (e.g. Multiple */
+  /*    Masters fonts where blend coordinates change).                     */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    hinter :: A handle to the source auto-hinter.                      */
+  /*                                                                       */
+  /*    face   :: A handle to the face.                                    */
+  /*                                                                       */
+  typedef void
+  (*FT_AutoHinter_GlobalResetFunc)( FT_AutoHinter  hinter,
+                                    FT_Face        face );
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <FuncType>                                                            */
+  /*    FT_AutoHinter_GlyphLoadFunc                                        */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    This function is used to load, scale, and automatically hint a     */
+  /*    glyph from a given face.                                           */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    face        :: A handle to the face.                               */
+  /*                                                                       */
+  /*    glyph_index :: The glyph index.                                    */
+  /*                                                                       */
+  /*    load_flags  :: The load flags.                                     */
+  /*                                                                       */
+  /* <Note>                                                                */
+  /*    This function is capable of loading composite glyphs by hinting    */
+  /*    each sub-glyph independently (which improves quality).             */
+  /*                                                                       */
+  /*    It will call the font driver with @FT_Load_Glyph, with             */
+  /*    @FT_LOAD_NO_SCALE set.                                             */
+  /*                                                                       */
+  typedef FT_Error
+  (*FT_AutoHinter_GlyphLoadFunc)( FT_AutoHinter  hinter,
+                                  FT_GlyphSlot   slot,
+                                  FT_Size        size,
+                                  FT_UInt        glyph_index,
+                                  FT_Int32       load_flags );
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Struct>                                                              */
+  /*    FT_AutoHinter_InterfaceRec                                         */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The auto-hinter module's interface.                                */
+  /*                                                                       */
+  typedef struct  FT_AutoHinter_InterfaceRec_
+  {
+    FT_AutoHinter_GlobalResetFunc  reset_face;
+    FT_AutoHinter_GlobalGetFunc    get_global_hints;
+    FT_AutoHinter_GlobalDoneFunc   done_global_hints;
+    FT_AutoHinter_GlyphLoadFunc    load_glyph;
+
+  } FT_AutoHinter_InterfaceRec, *FT_AutoHinter_Interface;
+
+
+#ifndef FT_CONFIG_OPTION_PIC
+
+#define FT_DEFINE_AUTOHINTER_INTERFACE(       \
+          class_,                             \
+          reset_face_,                        \
+          get_global_hints_,                  \
+          done_global_hints_,                 \
+          load_glyph_ )                       \
+  FT_CALLBACK_TABLE_DEF                       \
+  const FT_AutoHinter_InterfaceRec  class_ =  \
+  {                                           \
+    reset_face_,                              \
+    get_global_hints_,                        \
+    done_global_hints_,                       \
+    load_glyph_                               \
+  };
+
+#else /* FT_CONFIG_OPTION_PIC */
+
+#define FT_DEFINE_AUTOHINTER_INTERFACE(                            \
+          class_,                                                  \
+          reset_face_,                                             \
+          get_global_hints_,                                       \
+          done_global_hints_,                                      \
+          load_glyph_ )                                            \
+  void                                                             \
+  FT_Init_Class_ ## class_( FT_Library                   library,  \
+                            FT_AutoHinter_InterfaceRec*  clazz )   \
+  {                                                                \
+    FT_UNUSED( library );                                          \
+                                                                   \
+    clazz->reset_face        = reset_face_;                        \
+    clazz->get_global_hints  = get_global_hints_;                  \
+    clazz->done_global_hints = done_global_hints_;                 \
+    clazz->load_glyph        = load_glyph_;                        \
+  }
+
+#endif /* FT_CONFIG_OPTION_PIC */
+
+FT_END_HEADER
+
+#endif /* __AUTOHINT_H__ */
+
+
+/* END */