/* */
/* FreeType high-level API and common types (specification only). */
/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */
-/* 2010 by */
+/* Copyright 1996-2012 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* Left side bearing for vertical layout. */
/* */
/* vertBearingY :: */
- /* Top side bearing for vertical layout. */
+ /* Top side bearing for vertical layout. Larger positive values */
+ /* mean further below the vertical glyph origin. */
/* */
/* vertAdvance :: */
- /* Advance height for vertical layout. */
+ /* Advance height for vertical layout. Positive values mean the */
+ /* glyph has a positive advance downward. */
/* */
/* <Note> */
/* If not disabled with @FT_LOAD_NO_HINTING, the values represent */
FT_ListRec sizes_list;
- FT_Generic autohint;
- void* extensions;
+ FT_Generic autohint; /* face-specific auto-hinter data */
+ void* extensions; /* unused */
FT_Face_Internal internal;
/* */
/* It is not possible to autohint such fonts using */
/* @FT_LOAD_FORCE_AUTOHINT; it will also ignore */
- /* @FT_LOAD_NO_HINTING. You have to set both FT_LOAD_NO_HINTING */
+ /* @FT_LOAD_NO_HINTING. You have to set both @FT_LOAD_NO_HINTING */
/* and @FT_LOAD_NO_AUTOHINT to really disable hinting; however, you */
/* probably never want this except for demonstration purposes. */
/* */
- /* Currently, there are six TrueType fonts in the list of tricky */
- /* fonts; they are hard-coded in file `ttobjs.c'. */
+ /* Currently, there are about a dozen TrueType fonts in the list of */
+ /* tricky fonts; they are hard-coded in file `ttobjs.c'. */
/* */
#define FT_FACE_FLAG_SCALABLE ( 1L << 0 )
#define FT_FACE_FLAG_FIXED_SIZES ( 1L << 1 )
/* use @FT_New_Library instead, followed by a call to */
/* @FT_Add_Default_Modules (or a series of calls to @FT_Add_Module). */
/* */
+ /* For multi-threading applications each thread should have its own */
+ /* FT_Library object. */
+ /* */
FT_EXPORT( FT_Error )
FT_Init_FreeType( FT_Library *alibrary );
/* Each new face object created with this function also owns a */
/* default @FT_Size object, accessible as `face->size'. */
/* */
+ /* One @FT_Library instance can have multiple face objects, this is, */
+ /* @FT_Open_Face and its siblings can be called multiple times using */
+ /* the same `library' argument. */
+ /* */
/* See the discussion of reference counters in the description of */
/* @FT_Reference_Face. */
/* */
/* used to determine both scaling values. */
/* */
/* FT_SIZE_REQUEST_TYPE_REAL_DIM :: */
- /* The real dimension. The sum of the the `Ascender' and (minus */
- /* of) the `Descender' fields of @FT_FaceRec are used to determine */
+ /* The real dimension. The sum of the the `ascender' and (minus */
+ /* of) the `descender' fields of @FT_FaceRec are used to determine */
/* both scaling values. */
/* */
/* FT_SIZE_REQUEST_TYPE_BBOX :: */
* during glyph loading. This is mostly used to detect broken glyphs
* in fonts. By default, FreeType tries to handle broken fonts also.
*
- * FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ::
- * Indicates that the font driver should ignore the global advance
- * width defined in the font. By default, that value is used as the
- * advance width for all glyphs when the face has
- * @FT_FACE_FLAG_FIXED_WIDTH set.
+ * In particular, errors from the TrueType bytecode engine are not
+ * passed to the application if this flag is not set; this might
+ * result in partially hinted or distorted glyphs in case a glyph's
+ * bytecode is buggy.
*
- * This flag exists for historical reasons (to support buggy CJK
- * fonts).
+ * FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ::
+ * Ignored. Deprecated.
*
* FT_LOAD_NO_RECURSE ::
* This flag is only used internally. It merely indicates that the
*
*/
#define FT_LOAD_DEFAULT 0x0
-#define FT_LOAD_NO_SCALE 0x1
-#define FT_LOAD_NO_HINTING 0x2
-#define FT_LOAD_RENDER 0x4
-#define FT_LOAD_NO_BITMAP 0x8
-#define FT_LOAD_VERTICAL_LAYOUT 0x10
-#define FT_LOAD_FORCE_AUTOHINT 0x20
-#define FT_LOAD_CROP_BITMAP 0x40
-#define FT_LOAD_PEDANTIC 0x80
-#define FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH 0x200
-#define FT_LOAD_NO_RECURSE 0x400
-#define FT_LOAD_IGNORE_TRANSFORM 0x800
-#define FT_LOAD_MONOCHROME 0x1000
-#define FT_LOAD_LINEAR_DESIGN 0x2000
-#define FT_LOAD_NO_AUTOHINT 0x8000U
+#define FT_LOAD_NO_SCALE ( 1L << 0 )
+#define FT_LOAD_NO_HINTING ( 1L << 1 )
+#define FT_LOAD_RENDER ( 1L << 2 )
+#define FT_LOAD_NO_BITMAP ( 1L << 3 )
+#define FT_LOAD_VERTICAL_LAYOUT ( 1L << 4 )
+#define FT_LOAD_FORCE_AUTOHINT ( 1L << 5 )
+#define FT_LOAD_CROP_BITMAP ( 1L << 6 )
+#define FT_LOAD_PEDANTIC ( 1L << 7 )
+#define FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH ( 1L << 9 )
+#define FT_LOAD_NO_RECURSE ( 1L << 10 )
+#define FT_LOAD_IGNORE_TRANSFORM ( 1L << 11 )
+#define FT_LOAD_MONOCHROME ( 1L << 12 )
+#define FT_LOAD_LINEAR_DESIGN ( 1L << 13 )
+#define FT_LOAD_NO_AUTOHINT ( 1L << 15 )
/* */
/* used internally only by certain font drivers! */
-#define FT_LOAD_ADVANCE_ONLY 0x100
-#define FT_LOAD_SBITS_ONLY 0x4000
+#define FT_LOAD_ADVANCE_ONLY ( 1L << 8 )
+#define FT_LOAD_SBITS_ONLY ( 1L << 14 )
/**************************************************************************
/* */
/* point_size :: The point size in 16.16 fractional points. */
/* */
- /* degree :: The degree of tightness. */
+ /* degree :: The degree of tightness. Increasingly negative */
+ /* values represent tighter track kerning, while */
+ /* increasingly positive values represent looser track */
+ /* kerning. Value zero means no track kerning. */
/* */
/* <Output> */
- /* akerning :: The kerning in 16.16 fractional points. */
+ /* akerning :: The kerning in 16.16 fractional points, to be */
+ /* uniformly applied between all glyphs. */
/* */
/* <Return> */
/* FreeType error code. 0~means success. */
/* */
+ /* <Note> */
+ /* Currently, only the Type~1 font driver supports track kerning, */
+ /* using data from AFM files (if attached with @FT_Attach_File or */
+ /* @FT_Attach_Stream). */
+ /* */
+ /* Only very few AFM files come with track kerning data; please refer */
+ /* to the Adobe's AFM specification for more details. */
+ /* */
FT_EXPORT( FT_Error )
FT_Get_Track_Kerning( FT_Face face,
FT_Fixed point_size,
/* The glyph name is truncated to fit within the buffer if it is too */
/* long. The returned string is always zero-terminated. */
/* */
+ /* Be aware that FreeType reorders glyph indices internally so that */
+ /* glyph index~0 always corresponds to the `missing glyph' (called */
+ /* `.notdef'). */
+ /* */
/* This function is not compiled within the library if the config */
/* macro `FT_CONFIG_OPTION_NO_GLYPH_NAMES' is defined in */
/* `include/freetype/config/ftoptions.h'. */
/* in the @PS_FontInfoRec structure which is only guaranteed to */
/* return the correct results for Type~1 fonts. */
/* */
+ /* <Since> */
+ /* 2.3.8 */
+ /* */
FT_EXPORT( FT_UShort )
FT_Get_FSType_Flags( FT_Face face );
*/
#define FREETYPE_MAJOR 2
#define FREETYPE_MINOR 4
-#define FREETYPE_PATCH 3
+#define FREETYPE_PATCH 9
/*************************************************************************/
projects / framework / graphics / freetype.git / blobdiff