/***************************************************************************/ | |
/* */ | |
/* ftobjs.h */ | |
/* */ | |
/* The FreeType private base classes (specification). */ | |
/* */ | |
/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2008 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. */ | |
/* */ | |
/***************************************************************************/ | |
/*************************************************************************/ | |
/* */ | |
/* This file contains the definition of all internal FreeType classes. */ | |
/* */ | |
/*************************************************************************/ | |
#ifndef __FTOBJS_H__ | |
#define __FTOBJS_H__ | |
#include <ft2build.h> | |
#include FT_RENDER_H | |
#include FT_SIZES_H | |
#include FT_LCD_FILTER_H | |
#include FT_INTERNAL_MEMORY_H | |
#include FT_INTERNAL_GLYPH_LOADER_H | |
#include FT_INTERNAL_DRIVER_H | |
#include FT_INTERNAL_AUTOHINT_H | |
#include FT_INTERNAL_SERVICE_H | |
#ifdef FT_CONFIG_OPTION_INCREMENTAL | |
#include FT_INCREMENTAL_H | |
#endif | |
FT_BEGIN_HEADER | |
/*************************************************************************/ | |
/* */ | |
/* Some generic definitions. */ | |
/* */ | |
#ifndef TRUE | |
#define TRUE 1 | |
#endif | |
#ifndef FALSE | |
#define FALSE 0 | |
#endif | |
#ifndef NULL | |
#define NULL (void*)0 | |
#endif | |
/*************************************************************************/ | |
/* */ | |
/* The min and max functions missing in C. As usual, be careful not to */ | |
/* write things like FT_MIN( a++, b++ ) to avoid side effects. */ | |
/* */ | |
#define FT_MIN( a, b ) ( (a) < (b) ? (a) : (b) ) | |
#define FT_MAX( a, b ) ( (a) > (b) ? (a) : (b) ) | |
#define FT_ABS( a ) ( (a) < 0 ? -(a) : (a) ) | |
#define FT_PAD_FLOOR( x, n ) ( (x) & ~((n)-1) ) | |
#define FT_PAD_ROUND( x, n ) FT_PAD_FLOOR( (x) + ((n)/2), n ) | |
#define FT_PAD_CEIL( x, n ) FT_PAD_FLOOR( (x) + ((n)-1), n ) | |
#define FT_PIX_FLOOR( x ) ( (x) & ~63 ) | |
#define FT_PIX_ROUND( x ) FT_PIX_FLOOR( (x) + 32 ) | |
#define FT_PIX_CEIL( x ) FT_PIX_FLOOR( (x) + 63 ) | |
/* | |
* Return the highest power of 2 that is <= value; this correspond to | |
* the highest bit in a given 32-bit value. | |
*/ | |
FT_BASE( FT_UInt32 ) | |
ft_highpow2( FT_UInt32 value ); | |
/* | |
* character classification functions -- since these are used to parse | |
* font files, we must not use those in <ctypes.h> which are | |
* locale-dependent | |
*/ | |
#define ft_isdigit( x ) ( ( (unsigned)(x) - '0' ) < 10U ) | |
#define ft_isxdigit( x ) ( ( (unsigned)(x) - '0' ) < 10U || \ | |
( (unsigned)(x) - 'a' ) < 6U || \ | |
( (unsigned)(x) - 'A' ) < 6U ) | |
/* the next two macros assume ASCII representation */ | |
#define ft_isupper( x ) ( ( (unsigned)(x) - 'A' ) < 26U ) | |
#define ft_islower( x ) ( ( (unsigned)(x) - 'a' ) < 26U ) | |
#define ft_isalpha( x ) ( ft_isupper( x ) || ft_islower( x ) ) | |
#define ft_isalnum( x ) ( ft_isdigit( x ) || ft_isalpha( x ) ) | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/**** ****/ | |
/**** ****/ | |
/**** C H A R M A P S ****/ | |
/**** ****/ | |
/**** ****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/* handle to internal charmap object */ | |
typedef struct FT_CMapRec_* FT_CMap; | |
/* handle to charmap class structure */ | |
typedef const struct FT_CMap_ClassRec_* FT_CMap_Class; | |
/* internal charmap object structure */ | |
typedef struct FT_CMapRec_ | |
{ | |
FT_CharMapRec charmap; | |
FT_CMap_Class clazz; | |
} FT_CMapRec; | |
/* typecase any pointer to a charmap handle */ | |
#define FT_CMAP( x ) ((FT_CMap)( x )) | |
/* obvious macros */ | |
#define FT_CMAP_PLATFORM_ID( x ) FT_CMAP( x )->charmap.platform_id | |
#define FT_CMAP_ENCODING_ID( x ) FT_CMAP( x )->charmap.encoding_id | |
#define FT_CMAP_ENCODING( x ) FT_CMAP( x )->charmap.encoding | |
#define FT_CMAP_FACE( x ) FT_CMAP( x )->charmap.face | |
/* class method definitions */ | |
typedef FT_Error | |
(*FT_CMap_InitFunc)( FT_CMap cmap, | |
FT_Pointer init_data ); | |
typedef void | |
(*FT_CMap_DoneFunc)( FT_CMap cmap ); | |
typedef FT_UInt | |
(*FT_CMap_CharIndexFunc)( FT_CMap cmap, | |
FT_UInt32 char_code ); | |
typedef FT_UInt | |
(*FT_CMap_CharNextFunc)( FT_CMap cmap, | |
FT_UInt32 *achar_code ); | |
typedef FT_UInt | |
(*FT_CMap_CharVarIndexFunc)( FT_CMap cmap, | |
FT_CMap unicode_cmap, | |
FT_UInt32 char_code, | |
FT_UInt32 variant_selector ); | |
typedef FT_Bool | |
(*FT_CMap_CharVarIsDefaultFunc)( FT_CMap cmap, | |
FT_UInt32 char_code, | |
FT_UInt32 variant_selector ); | |
typedef FT_UInt32 * | |
(*FT_CMap_VariantListFunc)( FT_CMap cmap, | |
FT_Memory mem ); | |
typedef FT_UInt32 * | |
(*FT_CMap_CharVariantListFunc)( FT_CMap cmap, | |
FT_Memory mem, | |
FT_UInt32 char_code ); | |
typedef FT_UInt32 * | |
(*FT_CMap_VariantCharListFunc)( FT_CMap cmap, | |
FT_Memory mem, | |
FT_UInt32 variant_selector ); | |
typedef struct FT_CMap_ClassRec_ | |
{ | |
FT_ULong size; | |
FT_CMap_InitFunc init; | |
FT_CMap_DoneFunc done; | |
FT_CMap_CharIndexFunc char_index; | |
FT_CMap_CharNextFunc char_next; | |
/* Subsequent entries are special ones for format 14 -- the variant */ | |
/* selector subtable which behaves like no other */ | |
FT_CMap_CharVarIndexFunc char_var_index; | |
FT_CMap_CharVarIsDefaultFunc char_var_default; | |
FT_CMap_VariantListFunc variant_list; | |
FT_CMap_CharVariantListFunc charvariant_list; | |
FT_CMap_VariantCharListFunc variantchar_list; | |
} FT_CMap_ClassRec; | |
/* create a new charmap and add it to charmap->face */ | |
FT_BASE( FT_Error ) | |
FT_CMap_New( FT_CMap_Class clazz, | |
FT_Pointer init_data, | |
FT_CharMap charmap, | |
FT_CMap *acmap ); | |
/* destroy a charmap and remove it from face's list */ | |
FT_BASE( void ) | |
FT_CMap_Done( FT_CMap cmap ); | |
/*************************************************************************/ | |
/* */ | |
/* <Struct> */ | |
/* FT_Face_InternalRec */ | |
/* */ | |
/* <Description> */ | |
/* This structure contains the internal fields of each FT_Face */ | |
/* object. These fields may change between different releases of */ | |
/* FreeType. */ | |
/* */ | |
/* <Fields> */ | |
/* max_points :: */ | |
/* The maximal number of points used to store the vectorial outline */ | |
/* of any glyph in this face. If this value cannot be known in */ | |
/* advance, or if the face isn't scalable, this should be set to 0. */ | |
/* Only relevant for scalable formats. */ | |
/* */ | |
/* max_contours :: */ | |
/* The maximal number of contours used to store the vectorial */ | |
/* outline of any glyph in this face. If this value cannot be */ | |
/* known in advance, or if the face isn't scalable, this should be */ | |
/* set to 0. Only relevant for scalable formats. */ | |
/* */ | |
/* transform_matrix :: */ | |
/* A 2x2 matrix of 16.16 coefficients used to transform glyph */ | |
/* outlines after they are loaded from the font. Only used by the */ | |
/* convenience functions. */ | |
/* */ | |
/* transform_delta :: */ | |
/* A translation vector used to transform glyph outlines after they */ | |
/* are loaded from the font. Only used by the convenience */ | |
/* functions. */ | |
/* */ | |
/* transform_flags :: */ | |
/* Some flags used to classify the transform. Only used by the */ | |
/* convenience functions. */ | |
/* */ | |
/* services :: */ | |
/* A cache for frequently used services. It should be only */ | |
/* accessed with the macro `FT_FACE_LOOKUP_SERVICE'. */ | |
/* */ | |
/* incremental_interface :: */ | |
/* If non-null, the interface through which glyph data and metrics */ | |
/* are loaded incrementally for faces that do not provide all of */ | |
/* this data when first opened. This field exists only if */ | |
/* @FT_CONFIG_OPTION_INCREMENTAL is defined. */ | |
/* */ | |
/* ignore_unpatented_hinter :: */ | |
/* This boolean flag instructs the glyph loader to ignore the */ | |
/* native font hinter, if one is found. This is exclusively used */ | |
/* in the case when the unpatented hinter is compiled within the */ | |
/* library. */ | |
/* */ | |
typedef struct FT_Face_InternalRec_ | |
{ | |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS | |
FT_UShort reserved1; | |
FT_Short reserved2; | |
#endif | |
FT_Matrix transform_matrix; | |
FT_Vector transform_delta; | |
FT_Int transform_flags; | |
FT_ServiceCacheRec services; | |
#ifdef FT_CONFIG_OPTION_INCREMENTAL | |
FT_Incremental_InterfaceRec* incremental_interface; | |
#endif | |
FT_Bool ignore_unpatented_hinter; | |
} FT_Face_InternalRec; | |
/*************************************************************************/ | |
/* */ | |
/* <Struct> */ | |
/* FT_Slot_InternalRec */ | |
/* */ | |
/* <Description> */ | |
/* This structure contains the internal fields of each FT_GlyphSlot */ | |
/* object. These fields may change between different releases of */ | |
/* FreeType. */ | |
/* */ | |
/* <Fields> */ | |
/* loader :: The glyph loader object used to load outlines */ | |
/* into the glyph slot. */ | |
/* */ | |
/* flags :: Possible values are zero or */ | |
/* FT_GLYPH_OWN_BITMAP. The latter indicates */ | |
/* that the FT_GlyphSlot structure owns the */ | |
/* bitmap buffer. */ | |
/* */ | |
/* glyph_transformed :: Boolean. Set to TRUE when the loaded glyph */ | |
/* must be transformed through a specific */ | |
/* font transformation. This is _not_ the same */ | |
/* as the face transform set through */ | |
/* FT_Set_Transform(). */ | |
/* */ | |
/* glyph_matrix :: The 2x2 matrix corresponding to the glyph */ | |
/* transformation, if necessary. */ | |
/* */ | |
/* glyph_delta :: The 2d translation vector corresponding to */ | |
/* the glyph transformation, if necessary. */ | |
/* */ | |
/* glyph_hints :: Format-specific glyph hints management. */ | |
/* */ | |
#define FT_GLYPH_OWN_BITMAP 0x1 | |
typedef struct FT_Slot_InternalRec_ | |
{ | |
FT_GlyphLoader loader; | |
FT_UInt flags; | |
FT_Bool glyph_transformed; | |
FT_Matrix glyph_matrix; | |
FT_Vector glyph_delta; | |
void* glyph_hints; | |
} FT_GlyphSlot_InternalRec; | |
#if 0 | |
/*************************************************************************/ | |
/* */ | |
/* <Struct> */ | |
/* FT_Size_InternalRec */ | |
/* */ | |
/* <Description> */ | |
/* This structure contains the internal fields of each FT_Size */ | |
/* object. Currently, it's empty. */ | |
/* */ | |
/*************************************************************************/ | |
typedef struct FT_Size_InternalRec_ | |
{ | |
/* empty */ | |
} FT_Size_InternalRec; | |
#endif | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/**** ****/ | |
/**** ****/ | |
/**** M O D U L E S ****/ | |
/**** ****/ | |
/**** ****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/* */ | |
/* <Struct> */ | |
/* FT_ModuleRec */ | |
/* */ | |
/* <Description> */ | |
/* A module object instance. */ | |
/* */ | |
/* <Fields> */ | |
/* clazz :: A pointer to the module's class. */ | |
/* */ | |
/* library :: A handle to the parent library object. */ | |
/* */ | |
/* memory :: A handle to the memory manager. */ | |
/* */ | |
/* generic :: A generic structure for user-level extensibility (?). */ | |
/* */ | |
typedef struct FT_ModuleRec_ | |
{ | |
FT_Module_Class* clazz; | |
FT_Library library; | |
FT_Memory memory; | |
FT_Generic generic; | |
} FT_ModuleRec; | |
/* typecast an object to a FT_Module */ | |
#define FT_MODULE( x ) ((FT_Module)( x )) | |
#define FT_MODULE_CLASS( x ) FT_MODULE( x )->clazz | |
#define FT_MODULE_LIBRARY( x ) FT_MODULE( x )->library | |
#define FT_MODULE_MEMORY( x ) FT_MODULE( x )->memory | |
#define FT_MODULE_IS_DRIVER( x ) ( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_FONT_DRIVER ) | |
#define FT_MODULE_IS_RENDERER( x ) ( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_RENDERER ) | |
#define FT_MODULE_IS_HINTER( x ) ( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_HINTER ) | |
#define FT_MODULE_IS_STYLER( x ) ( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_STYLER ) | |
#define FT_DRIVER_IS_SCALABLE( x ) ( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_DRIVER_SCALABLE ) | |
#define FT_DRIVER_USES_OUTLINES( x ) !( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_DRIVER_NO_OUTLINES ) | |
#define FT_DRIVER_HAS_HINTER( x ) ( FT_MODULE_CLASS( x )->module_flags & \ | |
FT_MODULE_DRIVER_HAS_HINTER ) | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* FT_Get_Module_Interface */ | |
/* */ | |
/* <Description> */ | |
/* Finds a module and returns its specific interface as a typeless */ | |
/* pointer. */ | |
/* */ | |
/* <Input> */ | |
/* library :: A handle to the library object. */ | |
/* */ | |
/* module_name :: The module's name (as an ASCII string). */ | |
/* */ | |
/* <Return> */ | |
/* A module-specific interface if available, 0 otherwise. */ | |
/* */ | |
/* <Note> */ | |
/* You should better be familiar with FreeType internals to know */ | |
/* which module to look for, and what its interface is :-) */ | |
/* */ | |
FT_BASE( const void* ) | |
FT_Get_Module_Interface( FT_Library library, | |
const char* mod_name ); | |
FT_BASE( FT_Pointer ) | |
ft_module_get_service( FT_Module module, | |
const char* service_id ); | |
/* */ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/**** ****/ | |
/**** ****/ | |
/**** FACE, SIZE & GLYPH SLOT OBJECTS ****/ | |
/**** ****/ | |
/**** ****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/* a few macros used to perform easy typecasts with minimal brain damage */ | |
#define FT_FACE( x ) ((FT_Face)(x)) | |
#define FT_SIZE( x ) ((FT_Size)(x)) | |
#define FT_SLOT( x ) ((FT_GlyphSlot)(x)) | |
#define FT_FACE_DRIVER( x ) FT_FACE( x )->driver | |
#define FT_FACE_LIBRARY( x ) FT_FACE_DRIVER( x )->root.library | |
#define FT_FACE_MEMORY( x ) FT_FACE( x )->memory | |
#define FT_FACE_STREAM( x ) FT_FACE( x )->stream | |
#define FT_SIZE_FACE( x ) FT_SIZE( x )->face | |
#define FT_SLOT_FACE( x ) FT_SLOT( x )->face | |
#define FT_FACE_SLOT( x ) FT_FACE( x )->glyph | |
#define FT_FACE_SIZE( x ) FT_FACE( x )->size | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* FT_New_GlyphSlot */ | |
/* */ | |
/* <Description> */ | |
/* It is sometimes useful to have more than one glyph slot for a */ | |
/* given face object. This function is used to create additional */ | |
/* slots. All of them are automatically discarded when the face is */ | |
/* destroyed. */ | |
/* */ | |
/* <Input> */ | |
/* face :: A handle to a parent face object. */ | |
/* */ | |
/* <Output> */ | |
/* aslot :: A handle to a new glyph slot object. */ | |
/* */ | |
/* <Return> */ | |
/* FreeType error code. 0 means success. */ | |
/* */ | |
FT_BASE( FT_Error ) | |
FT_New_GlyphSlot( FT_Face face, | |
FT_GlyphSlot *aslot ); | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* FT_Done_GlyphSlot */ | |
/* */ | |
/* <Description> */ | |
/* Destroys a given glyph slot. Remember however that all slots are */ | |
/* automatically destroyed with its parent. Using this function is */ | |
/* not always mandatory. */ | |
/* */ | |
/* <Input> */ | |
/* slot :: A handle to a target glyph slot. */ | |
/* */ | |
FT_BASE( void ) | |
FT_Done_GlyphSlot( FT_GlyphSlot slot ); | |
/* */ | |
#define FT_REQUEST_WIDTH( req ) \ | |
( (req)->horiResolution \ | |
? (FT_Pos)( (req)->width * (req)->horiResolution + 36 ) / 72 \ | |
: (req)->width ) | |
#define FT_REQUEST_HEIGHT( req ) \ | |
( (req)->vertResolution \ | |
? (FT_Pos)( (req)->height * (req)->vertResolution + 36 ) / 72 \ | |
: (req)->height ) | |
/* Set the metrics according to a bitmap strike. */ | |
FT_BASE( void ) | |
FT_Select_Metrics( FT_Face face, | |
FT_ULong strike_index ); | |
/* Set the metrics according to a size request. */ | |
FT_BASE( void ) | |
FT_Request_Metrics( FT_Face face, | |
FT_Size_Request req ); | |
/* Match a size request against `available_sizes'. */ | |
FT_BASE( FT_Error ) | |
FT_Match_Size( FT_Face face, | |
FT_Size_Request req, | |
FT_Bool ignore_width, | |
FT_ULong* size_index ); | |
/* Use the horizontal metrics to synthesize the vertical metrics. */ | |
/* If `advance' is zero, it is also synthesized. */ | |
FT_BASE( void ) | |
ft_synthesize_vertical_metrics( FT_Glyph_Metrics* metrics, | |
FT_Pos advance ); | |
/* Free the bitmap of a given glyphslot when needed (i.e., only when it */ | |
/* was allocated with ft_glyphslot_alloc_bitmap). */ | |
FT_BASE( void ) | |
ft_glyphslot_free_bitmap( FT_GlyphSlot slot ); | |
/* Allocate a new bitmap buffer in a glyph slot. */ | |
FT_BASE( FT_Error ) | |
ft_glyphslot_alloc_bitmap( FT_GlyphSlot slot, | |
FT_ULong size ); | |
/* Set the bitmap buffer in a glyph slot to a given pointer. The buffer */ | |
/* will not be freed by a later call to ft_glyphslot_free_bitmap. */ | |
FT_BASE( void ) | |
ft_glyphslot_set_bitmap( FT_GlyphSlot slot, | |
FT_Byte* buffer ); | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/**** ****/ | |
/**** ****/ | |
/**** R E N D E R E R S ****/ | |
/**** ****/ | |
/**** ****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
#define FT_RENDERER( x ) ((FT_Renderer)( x )) | |
#define FT_GLYPH( x ) ((FT_Glyph)( x )) | |
#define FT_BITMAP_GLYPH( x ) ((FT_BitmapGlyph)( x )) | |
#define FT_OUTLINE_GLYPH( x ) ((FT_OutlineGlyph)( x )) | |
typedef struct FT_RendererRec_ | |
{ | |
FT_ModuleRec root; | |
FT_Renderer_Class* clazz; | |
FT_Glyph_Format glyph_format; | |
FT_Glyph_Class glyph_class; | |
FT_Raster raster; | |
FT_Raster_Render_Func raster_render; | |
FT_Renderer_RenderFunc render; | |
} FT_RendererRec; | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/**** ****/ | |
/**** ****/ | |
/**** F O N T D R I V E R S ****/ | |
/**** ****/ | |
/**** ****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/* typecast a module into a driver easily */ | |
#define FT_DRIVER( x ) ((FT_Driver)(x)) | |
/* typecast a module as a driver, and get its driver class */ | |
#define FT_DRIVER_CLASS( x ) FT_DRIVER( x )->clazz | |
/*************************************************************************/ | |
/* */ | |
/* <Struct> */ | |
/* FT_DriverRec */ | |
/* */ | |
/* <Description> */ | |
/* The root font driver class. A font driver is responsible for */ | |
/* managing and loading font files of a given format. */ | |
/* */ | |
/* <Fields> */ | |
/* root :: Contains the fields of the root module class. */ | |
/* */ | |
/* clazz :: A pointer to the font driver's class. Note that */ | |
/* this is NOT root.clazz. `class' wasn't used */ | |
/* as it is a reserved word in C++. */ | |
/* */ | |
/* faces_list :: The list of faces currently opened by this */ | |
/* driver. */ | |
/* */ | |
/* extensions :: A typeless pointer to the driver's extensions */ | |
/* registry, if they are supported through the */ | |
/* configuration macro FT_CONFIG_OPTION_EXTENSIONS. */ | |
/* */ | |
/* glyph_loader :: The glyph loader for all faces managed by this */ | |
/* driver. This object isn't defined for unscalable */ | |
/* formats. */ | |
/* */ | |
typedef struct FT_DriverRec_ | |
{ | |
FT_ModuleRec root; | |
FT_Driver_Class clazz; | |
FT_ListRec faces_list; | |
void* extensions; | |
FT_GlyphLoader glyph_loader; | |
} FT_DriverRec; | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/**** ****/ | |
/**** ****/ | |
/**** L I B R A R I E S ****/ | |
/**** ****/ | |
/**** ****/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/*************************************************************************/ | |
/* This hook is used by the TrueType debugger. It must be set to an */ | |
/* alternate truetype bytecode interpreter function. */ | |
#define FT_DEBUG_HOOK_TRUETYPE 0 | |
/* Set this debug hook to a non-null pointer to force unpatented hinting */ | |
/* for all faces when both TT_USE_BYTECODE_INTERPRETER and */ | |
/* TT_CONFIG_OPTION_UNPATENTED_HINTING are defined. This is only used */ | |
/* during debugging. */ | |
#define FT_DEBUG_HOOK_UNPATENTED_HINTING 1 | |
typedef void (*FT_Bitmap_LcdFilterFunc)( FT_Bitmap* bitmap, | |
FT_Render_Mode render_mode, | |
FT_Library library ); | |
/*************************************************************************/ | |
/* */ | |
/* <Struct> */ | |
/* FT_LibraryRec */ | |
/* */ | |
/* <Description> */ | |
/* The FreeType library class. This is the root of all FreeType */ | |
/* data. Use FT_New_Library() to create a library object, and */ | |
/* FT_Done_Library() to discard it and all child objects. */ | |
/* */ | |
/* <Fields> */ | |
/* memory :: The library's memory object. Manages memory */ | |
/* allocation. */ | |
/* */ | |
/* generic :: Client data variable. Used to extend the */ | |
/* Library class by higher levels and clients. */ | |
/* */ | |
/* version_major :: The major version number of the library. */ | |
/* */ | |
/* version_minor :: The minor version number of the library. */ | |
/* */ | |
/* version_patch :: The current patch level of the library. */ | |
/* */ | |
/* num_modules :: The number of modules currently registered */ | |
/* within this library. This is set to 0 for new */ | |
/* libraries. New modules are added through the */ | |
/* FT_Add_Module() API function. */ | |
/* */ | |
/* modules :: A table used to store handles to the currently */ | |
/* registered modules. Note that each font driver */ | |
/* contains a list of its opened faces. */ | |
/* */ | |
/* renderers :: The list of renderers currently registered */ | |
/* within the library. */ | |
/* */ | |
/* cur_renderer :: The current outline renderer. This is a */ | |
/* shortcut used to avoid parsing the list on */ | |
/* each call to FT_Outline_Render(). It is a */ | |
/* handle to the current renderer for the */ | |
/* FT_GLYPH_FORMAT_OUTLINE format. */ | |
/* */ | |
/* auto_hinter :: XXX */ | |
/* */ | |
/* raster_pool :: The raster object's render pool. This can */ | |
/* ideally be changed dynamically at run-time. */ | |
/* */ | |
/* raster_pool_size :: The size of the render pool in bytes. */ | |
/* */ | |
/* debug_hooks :: XXX */ | |
/* */ | |
typedef struct FT_LibraryRec_ | |
{ | |
FT_Memory memory; /* library's memory manager */ | |
FT_Generic generic; | |
FT_Int version_major; | |
FT_Int version_minor; | |
FT_Int version_patch; | |
FT_UInt num_modules; | |
FT_Module modules[FT_MAX_MODULES]; /* module objects */ | |
FT_ListRec renderers; /* list of renderers */ | |
FT_Renderer cur_renderer; /* current outline renderer */ | |
FT_Module auto_hinter; | |
FT_Byte* raster_pool; /* scan-line conversion */ | |
/* render pool */ | |
FT_ULong raster_pool_size; /* size of render pool in bytes */ | |
FT_DebugHook_Func debug_hooks[4]; | |
#ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING | |
FT_LcdFilter lcd_filter; | |
FT_Int lcd_extra; /* number of extra pixels */ | |
FT_Byte lcd_weights[7]; /* filter weights, if any */ | |
FT_Bitmap_LcdFilterFunc lcd_filter_func; /* filtering callback */ | |
#endif | |
} FT_LibraryRec; | |
FT_BASE( FT_Renderer ) | |
FT_Lookup_Renderer( FT_Library library, | |
FT_Glyph_Format format, | |
FT_ListNode* node ); | |
FT_BASE( FT_Error ) | |
FT_Render_Glyph_Internal( FT_Library library, | |
FT_GlyphSlot slot, | |
FT_Render_Mode render_mode ); | |
typedef const char* | |
(*FT_Face_GetPostscriptNameFunc)( FT_Face face ); | |
typedef FT_Error | |
(*FT_Face_GetGlyphNameFunc)( FT_Face face, | |
FT_UInt glyph_index, | |
FT_Pointer buffer, | |
FT_UInt buffer_max ); | |
typedef FT_UInt | |
(*FT_Face_GetGlyphNameIndexFunc)( FT_Face face, | |
FT_String* glyph_name ); | |
#ifndef FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* FT_New_Memory */ | |
/* */ | |
/* <Description> */ | |
/* Creates a new memory object. */ | |
/* */ | |
/* <Return> */ | |
/* A pointer to the new memory object. 0 in case of error. */ | |
/* */ | |
FT_BASE( FT_Memory ) | |
FT_New_Memory( void ); | |
/*************************************************************************/ | |
/* */ | |
/* <Function> */ | |
/* FT_Done_Memory */ | |
/* */ | |
/* <Description> */ | |
/* Discards memory manager. */ | |
/* */ | |
/* <Input> */ | |
/* memory :: A handle to the memory manager. */ | |
/* */ | |
FT_BASE( void ) | |
FT_Done_Memory( FT_Memory memory ); | |
#endif /* !FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM */ | |
/* Define default raster's interface. The default raster is located in */ | |
/* `src/base/ftraster.c'. */ | |
/* */ | |
/* Client applications can register new rasters through the */ | |
/* FT_Set_Raster() API. */ | |
#ifndef FT_NO_DEFAULT_RASTER | |
FT_EXPORT_VAR( FT_Raster_Funcs ) ft_default_raster; | |
#endif | |
FT_END_HEADER | |
#endif /* __FTOBJS_H__ */ | |
/* END */ |