/* */
/* TrueType bytecode interpreter (specification). */
/* */
-/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2010 by */
+/* Copyright 1996-2007, 2010, 2012-2014 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
(*TT_Project_Func)( EXEC_OP_ FT_Pos dx,
FT_Pos dy );
+ /* getting current ppem. Take care of non-square pixels if necessary */
+ typedef FT_Long
+ (*TT_Cur_Ppem_Func)( EXEC_OP );
+
/* reading a cvt value. Take care of non-square pixels if necessary */
typedef FT_F26Dot6
(*TT_Get_CVT_Func)( EXEC_OP_ FT_ULong idx );
FT_Int Caller_Range;
FT_Long Caller_IP;
FT_Long Cur_Count;
- FT_Long Cur_Restart;
- FT_Long Cur_End;
+
+ TT_DefRecord *Def; /* either FDEF or IDEF */
} TT_CallRec, *TT_CallStack;
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ /*************************************************************************/
+ /* */
+ /* These structures define rules used to tweak subpixel hinting for */
+ /* various fonts. "", 0, "", NULL value indicates to match any value. */
+ /* */
+
+#define SPH_MAX_NAME_SIZE 32
+#define SPH_MAX_CLASS_MEMBERS 100
+
+ typedef struct SPH_TweakRule_
+ {
+ const char family[SPH_MAX_NAME_SIZE];
+ const FT_UInt ppem;
+ const char style[SPH_MAX_NAME_SIZE];
+ const FT_ULong glyph;
+
+ } SPH_TweakRule;
+
+
+ typedef struct SPH_ScaleRule_
+ {
+ const char family[SPH_MAX_NAME_SIZE];
+ const FT_UInt ppem;
+ const char style[SPH_MAX_NAME_SIZE];
+ const FT_ULong glyph;
+ const FT_ULong scale;
+
+ } SPH_ScaleRule;
+
+
+ typedef struct SPH_Font_Class_
+ {
+ const char name[SPH_MAX_NAME_SIZE];
+ const char member[SPH_MAX_CLASS_MEMBERS][SPH_MAX_NAME_SIZE];
+
+ } SPH_Font_Class;
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+
/*************************************************************************/
/* */
/* The main structure for the interpreter which collects all necessary */
FT_F26Dot6 phase; /* `SuperRounding' */
FT_F26Dot6 threshold;
-#if 0
- /* this seems to be unused */
- FT_Int cur_ppem; /* ppem along the current proj vector */
-#endif
-
FT_Bool instruction_trap; /* If `True', the interpreter will */
/* exit after each instruction */
TT_Move_Func func_move; /* current point move function */
TT_Move_Func func_move_orig; /* move original position function */
+ TT_Cur_Ppem_Func func_cur_ppem; /* get current proj. ppem value */
+
TT_Get_CVT_Func func_read_cvt; /* read a cvt entry */
TT_Set_CVT_Func func_write_cvt; /* write a cvt entry (in pixels) */
TT_Set_CVT_Func func_move_cvt; /* incr a cvt entry (in pixels) */
FT_Bool grayscale; /* are we hinting for grayscale? */
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+ TT_Round_Func func_round_sphn; /* subpixel rounding function */
+
+ FT_Bool subpixel; /* Using subpixel hinting? */
+ FT_Bool ignore_x_mode; /* Standard rendering mode for */
+ /* subpixel hinting. On if gray */
+ /* or subpixel hinting is on. */
+
+ /* The following 4 aren't fully implemented but here for MS rasterizer */
+ /* compatibility. */
+ FT_Bool compatible_widths; /* compatible widths? */
+ FT_Bool symmetrical_smoothing; /* symmetrical_smoothing? */
+ FT_Bool bgr; /* bgr instead of rgb? */
+ FT_Bool subpixel_positioned; /* subpixel positioned */
+ /* (DirectWrite ClearType)? */
+
+ FT_Int rasterizer_version; /* MS rasterizer version */
+
+ FT_Bool iup_called; /* IUP called for glyph? */
+
+ FT_ULong sph_tweak_flags; /* flags to control */
+ /* hint tweaks */
+
+ FT_ULong sph_in_func_flags; /* flags to indicate if in */
+ /* special functions */
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
} TT_ExecContextRec;
extern const TT_GraphicsState tt_default_graphics_state;
- FT_LOCAL( FT_Error )
+#ifdef TT_USE_BYTECODE_INTERPRETER
+ FT_LOCAL( void )
TT_Goto_CodeRange( TT_ExecContext exec,
FT_Int range,
FT_Long IP );
- FT_LOCAL( FT_Error )
+ FT_LOCAL( void )
TT_Set_CodeRange( TT_ExecContext exec,
FT_Int range,
void* base,
FT_Long length );
- FT_LOCAL( FT_Error )
+ FT_LOCAL( void )
TT_Clear_CodeRange( TT_ExecContext exec,
FT_Int range );
FT_Long multiplier,
void* _pbuff,
FT_ULong new_max );
+#endif /* TT_USE_BYTECODE_INTERPRETER */
/*************************************************************************/
FT_EXPORT( TT_ExecContext )
TT_New_Context( TT_Driver driver );
- FT_LOCAL( FT_Error )
+
+#ifdef TT_USE_BYTECODE_INTERPRETER
+ FT_LOCAL( void )
TT_Done_Context( TT_ExecContext exec );
FT_LOCAL( FT_Error )
TT_Face face,
TT_Size size );
- FT_LOCAL( FT_Error )
+ FT_LOCAL( void )
TT_Save_Context( TT_ExecContext exec,
TT_Size ins );
FT_LOCAL( FT_Error )
TT_Run_Context( TT_ExecContext exec,
FT_Bool debug );
+#endif /* TT_USE_BYTECODE_INTERPRETER */
/*************************************************************************/
projects / framework / graphics / freetype.git / blobdiff