Updated to freetype 2.4.1

12 files changed, 145 insertions, 51 deletions

diff --git a/freetype/include/freetype/config/ftoption.h b/freetype/include/freetype/config/ftoption.h
index 204743600..2b46259c1 100644
--- a/freetype/include/freetype/config/ftoption.h
+++ b/freetype/include/freetype/config/ftoption.h
@@ -488,8 +488,7 @@ FT_BEGIN_HEADER
   /*************************************************************************/
   /*                                                                       */
   /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile   */
-  /* a bytecode interpreter in the TrueType driver.  Note that there are   */
-  /* important patent issues related to the use of the interpreter.        */
+  /* a bytecode interpreter in the TrueType driver.                        */
   /*                                                                       */
   /* By undefining this, you will only compile the code necessary to load  */
   /* TrueType glyphs without hinting.                                      */
@@ -497,17 +496,20 @@ FT_BEGIN_HEADER
   /*   Do not #undef this macro here, since the build system might         */
   /*   define it for certain configurations only.                          */
   /*                                                                       */
-/* #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
+#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
 
 
   /*************************************************************************/
   /*                                                                       */
   /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version  */
   /* of the TrueType bytecode interpreter is used that doesn't implement   */
-  /* any of the patented opcodes and algorithms.  Note that the            */
-  /* TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* if you define  */
-  /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, either define  */
-  /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER or                              */
+  /* any of the patented opcodes and algorithms.  The patents related to   */
+  /* TrueType hinting have expired worldwide since May 2010; this option   */
+  /* is now deprecated.                                                    */
+  /*                                                                       */
+  /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored*  */
+  /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words,  */
+  /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or                */
   /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time.    */
   /*                                                                       */
   /* This macro is only useful for a small number of font files (mostly    */
@@ -544,7 +546,7 @@ FT_BEGIN_HEADER
   /*     ...                                                               */
   /*   }                                                                   */
   /*                                                                       */
-#define TT_CONFIG_OPTION_UNPATENTED_HINTING
+/* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
 
 
   /*************************************************************************/
@@ -691,6 +693,27 @@ FT_BEGIN_HEADER
 
 
   /*
+   *  To detect legacy cache-lookup call from a rogue client (<= 2.1.7),
+   *  we restrict the number of charmaps in a font.  The current API of
+   *  FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API
+   *  takes charcode only.  To determine the passed value is for cmap_index
+   *  or charcode, the possible cmap_index is restricted not to exceed
+   *  the minimum possible charcode by a rogue client.  It is also very
+   *  unlikely that a rogue client is interested in Unicode values 0 to 15.
+   *
+   *  NOTE: The original threshold was 4 deduced from popular number of
+   *        cmap subtables in UCS-4 TrueType fonts, but now it is not
+   *        irregular for OpenType fonts to have more than 4 subtables,
+   *        because variation selector subtables are available for Apple
+   *        and Microsoft platforms.
+   */
+
+#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
+#define FT_MAX_CHARMAP_CACHEABLE 15
+#endif
+
+
+  /*
    * This macro is defined if either unpatented or native TrueType
    * hinting is requested by the definitions above.
    */
diff --git a/freetype/include/freetype/freetype.h b/freetype/include/freetype/freetype.h
index 942a740f0..e2ab77437 100644
--- a/freetype/include/freetype/freetype.h
+++ b/freetype/include/freetype/freetype.h
@@ -2997,7 +2997,7 @@ FT_BEGIN_HEADER
    *
    * @return:
    *   The index into the array of character maps within the face to which
-   *   `charmap' belongs.
+   *   `charmap' belongs.  If an error occurs, -1 is returned.
    *
    */
   FT_EXPORT( FT_Int )
@@ -3773,8 +3773,8 @@ FT_BEGIN_HEADER
    *
    */
 #define FREETYPE_MAJOR  2
-#define FREETYPE_MINOR  3
-#define FREETYPE_PATCH  12
+#define FREETYPE_MINOR  4
+#define FREETYPE_PATCH  1
 
 
   /*************************************************************************/
@@ -3834,6 +3834,9 @@ FT_BEGIN_HEADER
   /*    1~if this is a TrueType font that uses one of the patented         */
   /*    opcodes, 0~otherwise.                                              */
   /*                                                                       */
+  /* <Note>                                                                */
+  /*    Since May 2010, TrueType hinting is no longer patented.            */
+  /*                                                                       */
   /* <Since>                                                               */
   /*    2.3.5                                                              */
   /*                                                                       */
@@ -3861,6 +3864,9 @@ FT_BEGIN_HEADER
   /*    an SFNT font, or if the unpatented hinter is not compiled in this  */
   /*    instance of the library.                                           */
   /*                                                                       */
+  /* <Note>                                                                */
+  /*    Since May 2010, TrueType hinting is no longer patented.            */
+  /*                                                                       */
   /* <Since>                                                               */
   /*    2.3.5                                                              */
   /*                                                                       */
diff --git a/freetype/include/freetype/ftcache.h b/freetype/include/freetype/ftcache.h
index 0916d70a3..a9e1237bc 100644
--- a/freetype/include/freetype/ftcache.h
+++ b/freetype/include/freetype/ftcache.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType Cache subsystem (specification).                            */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by       */
+/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 by */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -263,10 +263,10 @@ FT_BEGIN_HEADER
   /*    reference-counted.  A node with a count of~0 might be flushed      */
   /*    out of a full cache whenever a lookup request is performed.        */
   /*                                                                       */
-  /*    If you lookup nodes, you have the ability to `acquire' them, i.e., */
-  /*    to increment their reference count.  This will prevent the node    */
-  /*    from being flushed out of the cache until you explicitly `release' */
-  /*    it (see @FTC_Node_Unref).                                          */
+  /*    If you look up nodes, you have the ability to `acquire' them,      */
+  /*    i.e., to increment their reference count.  This will prevent the   */
+  /*    node from being flushed out of the cache until you explicitly      */
+  /*    `release' it (see @FTC_Node_Unref).                                */
   /*                                                                       */
   /*    See also @FTC_SBitCache_Lookup and @FTC_ImageCache_Lookup.         */
   /*                                                                       */
diff --git a/freetype/include/freetype/fterrdef.h b/freetype/include/freetype/fterrdef.h
index d7ad256bd..bf5222060 100644
--- a/freetype/include/freetype/fterrdef.h
+++ b/freetype/include/freetype/fterrdef.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType error codes (specification).                                */
 /*                                                                         */
-/*  Copyright 2002, 2004, 2006, 2007 by                                    */
+/*  Copyright 2002, 2004, 2006, 2007, 2010 by                              */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -211,6 +211,9 @@
                 "argument stack underflow" )
   FT_ERRORDEF_( Ignore,                                      0xA2, \
                 "ignore" )
+  FT_ERRORDEF_( No_Unicode_Glyph_Name,                       0xA3, \
+                "no Unicode glyph name found" )
+
 
   /* BDF errors */
 
@@ -220,19 +223,21 @@
                 "`FONT' field missing" )
   FT_ERRORDEF_( Missing_Size_Field,                          0xB2, \
                 "`SIZE' field missing" )
-  FT_ERRORDEF_( Missing_Chars_Field,                         0xB3, \
+  FT_ERRORDEF_( Missing_Fontboundingbox_Field,               0xB3, \
+                "`FONTBOUNDINGBOX' field missing" )
+  FT_ERRORDEF_( Missing_Chars_Field,                         0xB4, \
                 "`CHARS' field missing" )
-  FT_ERRORDEF_( Missing_Startchar_Field,                     0xB4, \
+  FT_ERRORDEF_( Missing_Startchar_Field,                     0xB5, \
                 "`STARTCHAR' field missing" )
-  FT_ERRORDEF_( Missing_Encoding_Field,                      0xB5, \
+  FT_ERRORDEF_( Missing_Encoding_Field,                      0xB6, \
                 "`ENCODING' field missing" )
-  FT_ERRORDEF_( Missing_Bbx_Field,                           0xB6, \
+  FT_ERRORDEF_( Missing_Bbx_Field,                           0xB7, \
                 "`BBX' field missing" )
-  FT_ERRORDEF_( Bbx_Too_Big,                                 0xB7, \
+  FT_ERRORDEF_( Bbx_Too_Big,                                 0xB8, \
                 "`BBX' too big" )
-  FT_ERRORDEF_( Corrupted_Font_Header,                       0xB8, \
+  FT_ERRORDEF_( Corrupted_Font_Header,                       0xB9, \
                 "Font header corrupted or missing fields" )
-  FT_ERRORDEF_( Corrupted_Font_Glyphs,                       0xB9, \
+  FT_ERRORDEF_( Corrupted_Font_Glyphs,                       0xBA, \
                 "Font glyphs corrupted or missing fields" )
 
 
diff --git a/freetype/include/freetype/ftlcdfil.h b/freetype/include/freetype/ftlcdfil.h
index c6201b38e..e7f592714 100644
--- a/freetype/include/freetype/ftlcdfil.h
+++ b/freetype/include/freetype/ftlcdfil.h
@@ -5,7 +5,7 @@
 /*    FreeType API for color filtering of subpixel bitmap glyphs           */
 /*    (specification).                                                     */
 /*                                                                         */
-/*  Copyright 2006, 2007, 2008 by                                          */
+/*  Copyright 2006, 2007, 2008, 2010 by                                    */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -161,6 +161,47 @@ FT_BEGIN_HEADER
   FT_Library_SetLcdFilter( FT_Library    library,
                            FT_LcdFilter  filter );
 
+
+  /**************************************************************************
+   *
+   * @func:
+   *   FT_Library_SetLcdFilterWeights
+   *
+   * @description:
+   *   Use this function to override the filter weights selected by
+   *   @FT_Library_SetLcdFilter.  By default, FreeType uses the quintuple
+   *   (0x00, 0x55, 0x56, 0x55, 0x00) for FT_LCD_FILTER_LIGHT, and (0x10,
+   *   0x40, 0x70, 0x40, 0x10) for FT_LCD_FILTER_DEFAULT and
+   *   FT_LCD_FILTER_LEGACY.
+   *
+   * @input:
+   *   library ::
+   *     A handle to the target library instance.
+   *
+   *   weights ::
+   *     A pointer to an array; the function copies the first five bytes and
+   *     uses them to specify the filter weights.
+   *
+   * @return:
+   *   FreeType error code.  0~means success.
+   *
+   * @note:
+   *   Due to *PATENTS* covering subpixel rendering, this function doesn't
+   *   do anything except returning `FT_Err_Unimplemented_Feature' if the
+   *   configuration macro FT_CONFIG_OPTION_SUBPIXEL_RENDERING is not
+   *   defined in your build of the library, which should correspond to all
+   *   default builds of FreeType.
+   *
+   *   This function must be called after @FT_Library_SetLcdFilter to have
+   *   any effect.
+   *
+   * @since:
+   *   2.4.0
+   */
+  FT_EXPORT( FT_Error )
+  FT_Library_SetLcdFilterWeights( FT_Library      library,
+                                  unsigned char  *weights );
+
   /* */
 
 
diff --git a/freetype/include/freetype/ftlist.h b/freetype/include/freetype/ftlist.h
index 93b05fc0d..bb6f7f119 100644
--- a/freetype/include/freetype/ftlist.h
+++ b/freetype/include/freetype/ftlist.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Generic list support for FreeType (specification).                   */
 /*                                                                         */
-/*  Copyright 1996-2001, 2003, 2007 by                                     */
+/*  Copyright 1996-2001, 2003, 2007, 2010 by                               */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -255,6 +255,10 @@ FT_BEGIN_HEADER
   /*    user    :: A user-supplied field which is passed as the last       */
   /*               argument to the destructor.                             */
   /*                                                                       */
+  /* <Note>                                                                */
+  /*    This function expects that all nodes added by @FT_List_Add or      */
+  /*    @FT_List_Insert have been dynamically allocated.                   */
+  /*                                                                       */
   FT_EXPORT( void )
   FT_List_Finalize( FT_List             list,
                     FT_List_Destructor  destroy,
diff --git a/freetype/include/freetype/ftmodapi.h b/freetype/include/freetype/ftmodapi.h
index 3c9b876df..17868b2f8 100644
--- a/freetype/include/freetype/ftmodapi.h
+++ b/freetype/include/freetype/ftmodapi.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType modules public interface (specification).                   */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2006, 2008, 2009 by                   */
+/*  Copyright 1996-2001, 2002, 2003, 2006, 2008, 2009, 2010 by             */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -263,6 +263,9 @@ FT_BEGIN_HEADER
   /*    @FT_Add_Default_Modules or a series of calls to @FT_Add_Module)    */
   /*    instead of @FT_Init_FreeType to initialize the FreeType library.   */
   /*                                                                       */
+  /*    Don't use @FT_Done_FreeType but @FT_Done_Library to destroy a      */
+  /*    library instance.                                                  */
+  /*                                                                       */
   /* <Input>                                                               */
   /*    memory   :: A handle to the original memory object.                */
   /*                                                                       */
@@ -394,8 +397,8 @@ FT_BEGIN_HEADER
    *
    *    FT_TRUETYPE_ENGINE_TYPE_PATENTED ::
    *       The library implements a bytecode interpreter that covers
-   *       the full instruction set of the TrueType virtual machine.
-   *       See the file `docs/PATENTS' for legal aspects.
+   *       the full instruction set of the TrueType virtual machine (this
+   *       was governed by patents until May 2010, hence the name).
    *
    *  @since:
    *       2.2
diff --git a/freetype/include/freetype/ftrender.h b/freetype/include/freetype/ftrender.h
index 41c31eac4..e06a8142e 100644
--- a/freetype/include/freetype/ftrender.h
+++ b/freetype/include/freetype/ftrender.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType renderer modules public interface (specification).          */
 /*                                                                         */
-/*  Copyright 1996-2001, 2005, 2006 by                                     */
+/*  Copyright 1996-2001, 2005, 2006, 2010 by                               */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -141,10 +141,6 @@ FT_BEGIN_HEADER
   /*    raster_class    :: For @FT_GLYPH_FORMAT_OUTLINE renderers only.    */
   /*                       This is a pointer to its raster's class.        */
   /*                                                                       */
-  /*    raster          :: For @FT_GLYPH_FORMAT_OUTLINE renderers only.    */
-  /*                       This is a pointer to the corresponding raster   */
-  /*                       object, if any.                                 */
-  /*                                                                       */
   typedef struct  FT_Renderer_Class_
   {
     FT_Module_Class            root;
diff --git a/freetype/include/freetype/ftsystem.h b/freetype/include/freetype/ftsystem.h
index a95b2c76b..e07460c55 100644
--- a/freetype/include/freetype/ftsystem.h
+++ b/freetype/include/freetype/ftsystem.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    FreeType low-level system interface definition (specification).      */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2005 by                                     */
+/*  Copyright 1996-2001, 2002, 2005, 2010 by                               */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -240,7 +240,8 @@ FT_BEGIN_HEADER
    *
    * @note:
    *   This function might be called to perform a seek or skip operation
-   *   with a `count' of~0.
+   *   with a `count' of~0.  A non-zero return value then indicates an
+   *   error.
    *
    */
   typedef unsigned long
@@ -301,7 +302,7 @@ FT_BEGIN_HEADER
    *     The stream's input function.
    *
    *   close ::
-   *     The stream;s close function.
+   *     The stream's close function.
    *
    *   memory ::
    *     The memory manager to use to preload frames.  This is set
diff --git a/freetype/include/freetype/internal/ftmemory.h b/freetype/include/freetype/internal/ftmemory.h
index 2010ca90d..026aa63ea 100644
--- a/freetype/include/freetype/internal/ftmemory.h
+++ b/freetype/include/freetype/internal/ftmemory.h
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    The FreeType memory management macros (specification).               */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2004, 2005, 2006, 2007 by                   */
+/*  Copyright 1996-2001, 2002, 2004, 2005, 2006, 2007, 2010 by             */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg                       */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -58,15 +58,27 @@ FT_BEGIN_HEADER
 
 
   /*
-   *  C++ refuses to handle statements like p = (void*)anything; where `p'
-   *  is a typed pointer.  Since we don't have a `typeof' operator in
-   *  standard C++, we have to use ugly casts.
+   *  C++ refuses to handle statements like p = (void*)anything, with `p' a
+   *  typed pointer.  Since we don't have a `typeof' operator in standard
+   *  C++, we have to use a template to emulate it.
    */
 
 #ifdef __cplusplus
-#define FT_ASSIGNP( p, val )  *((void**)&(p)) = (val)
+
+  extern "C++"
+  template <typename T> inline T*
+  cplusplus_typeof(        T*,
+                    void  *v )
+  {
+    return static_cast <T*> ( v );
+  }
+
+#define FT_ASSIGNP( p, val )  (p) = cplusplus_typeof( (p), (val) )
+
 #else
+
 #define FT_ASSIGNP( p, val )  (p) = (val)
+
 #endif
 
 
diff --git a/freetype/include/freetype/ttnameid.h b/freetype/include/freetype/ttnameid.h
index cbeac78db..66aef0432 100644
--- a/freetype/include/freetype/ttnameid.h
+++ b/freetype/include/freetype/ttnameid.h
@@ -64,7 +64,7 @@ FT_BEGIN_HEADER
    *     MacOS systems (even if they contain a Microsoft charmap as well).
    *
    *   TT_PLATFORM_ISO ::
-   *     This value was used to specify Unicode charmaps.  It is however
+   *     This value was used to specify ISO/IEC 10646 charmaps.  It is however
    *     now deprecated.  See @TT_ISO_ID_XXX for a list of corresponding
    *     `encoding_id' values.
    *
diff --git a/freetype/include/freetype/tttables.h b/freetype/include/freetype/tttables.h
index c12b17268..4610e501f 100644
--- a/freetype/include/freetype/tttables.h
+++ b/freetype/include/freetype/tttables.h
@@ -5,7 +5,7 @@
 /*    Basic SFNT/TrueType tables definitions and interface                 */
 /*    (specification only).                                                */
 /*                                                                         */
-/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2008, 2009 by             */
+/*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2008, 2009, 2010 by       */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -557,13 +557,13 @@ FT_BEGIN_HEADER
   /*                                                                       */
   typedef enum  FT_Sfnt_Tag_
   {
-    ft_sfnt_head = 0,
-    ft_sfnt_maxp = 1,
-    ft_sfnt_os2  = 2,
-    ft_sfnt_hhea = 3,
-    ft_sfnt_vhea = 4,
-    ft_sfnt_post = 5,
-    ft_sfnt_pclt = 6,
+    ft_sfnt_head = 0,    /* TT_Header     */
+    ft_sfnt_maxp = 1,    /* TT_MaxProfile */
+    ft_sfnt_os2  = 2,    /* TT_OS2        */
+    ft_sfnt_hhea = 3,    /* TT_HoriHeader */
+    ft_sfnt_vhea = 4,    /* TT_VertHeader */
+    ft_sfnt_post = 5,    /* TT_Postscript */
+    ft_sfnt_pclt = 6,    /* TT_PCLT       */
 
     sfnt_max   /* internal end mark */
 
@@ -590,6 +590,9 @@ FT_BEGIN_HEADER
   /*    error, or if the corresponding table was not found *OR* loaded     */
   /*    from the file.                                                     */
   /*                                                                       */
+  /*    Use a typecast according to `tag' to access the structure          */
+  /*    elements.                                                          */
+  /*                                                                       */
   /* <Note>                                                                */
   /*    The table is owned by the face object and disappears with it.      */
   /*                                                                       */