+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftobjs.h */
-/* */
-/* The FreeType private base classes (specification). */
-/* */
-/* Copyright 1996-2001 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_INTERNAL_MEMORY_H
-#include FT_INTERNAL_DRIVER_H
-#include FT_INTERNAL_AUTOHINT_H
-
-
-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
-
-#ifndef UNUSED
-#define UNUSED( arg ) ( (arg)=(arg) )
-#endif
-
-
- /*************************************************************************/
- /* */
- /* The min and max functions missing in C. As usual, be careful not to */
- /* write things like MIN( a++, b++ ) to avoid side effects. */
- /* */
-#ifndef MIN
-#define MIN( a, b ) ( (a) < (b) ? (a) : (b) )
-#endif
-
-#ifndef MAX
-#define MAX( a, b ) ( (a) > (b) ? (a) : (b) )
-#endif
-
-#ifndef ABS
-#define ABS( a ) ( (a) < 0 ? -(a) : (a) )
-#endif
-
-
- /*************************************************************************/
- /* */
- /* <Struct> */
- /* FT_GlyphLoader */
- /* */
- /* <Description> */
- /* The glyph loader is an internal object used to load several glyphs */
- /* together (for example, in the case of composites). */
- /* */
- /* <Note> */
- /* The glyph loader implementation is not part of the high-level API, */
- /* hence the forward structure declaration. */
- /* */
- typedef struct FT_GlyphLoader_ FT_GlyphLoader;
-
-
- /*************************************************************************/
- /* */
- /* <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. */
- /* */
- /* postscript_name :: Postscript font name for this face. */
- /* */
- typedef struct FT_Face_InternalRec_
- {
- FT_UShort max_points;
- FT_Short max_contours;
-
- FT_Matrix transform_matrix;
- FT_Vector transform_delta;
- FT_Int transform_flags;
-
- const char* postscript_name;
-
- } 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. */
- /* */
- /* 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. */
- /* */
- typedef struct FT_Slot_InternalRec_
- {
- FT_GlyphLoader* loader;
- FT_Bool glyph_transformed;
- FT_Matrix glyph_matrix;
- FT_Vector glyph_delta;
-
- } FT_GlyphSlot_InternalRec;
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** 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 );
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** 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_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 );
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** G L Y P H L O A D E R ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1
-#define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2
-#define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4
-#define FT_SUBGLYPH_FLAG_SCALE 8
-#define FT_SUBGLYPH_FLAG_XY_SCALE 0x40
-#define FT_SUBGLYPH_FLAG_2X2 0x80
-#define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200
-
-
- enum
- {
- ft_glyph_own_bitmap = 1
- };
-
-
- struct FT_SubGlyph_
- {
- FT_Int index;
- FT_UShort flags;
- FT_Int arg1;
- FT_Int arg2;
- FT_Matrix transform;
- };
-
-
- typedef struct FT_GlyphLoad_
- {
- FT_Outline outline; /* outline */
- FT_UInt num_subglyphs; /* number of subglyphs */
- FT_SubGlyph* subglyphs; /* subglyphs */
- FT_Vector* extra_points; /* extra points table */
-
- } FT_GlyphLoad;
-
-
- struct FT_GlyphLoader_
- {
- FT_Memory memory;
- FT_UInt max_points;
- FT_UInt max_contours;
- FT_UInt max_subglyphs;
- FT_Bool use_extra;
-
- FT_GlyphLoad base;
- FT_GlyphLoad current;
-
- void* other; /* for possible future extension? */
-
- };
-
-
- FT_BASE( FT_Error )
- FT_GlyphLoader_New( FT_Memory memory,
- FT_GlyphLoader* *aloader );
-
- FT_BASE( FT_Error )
- FT_GlyphLoader_Create_Extra( FT_GlyphLoader* loader );
-
- FT_BASE( void )
- FT_GlyphLoader_Done( FT_GlyphLoader* loader );
-
- FT_BASE( void )
- FT_GlyphLoader_Reset( FT_GlyphLoader* loader );
-
- FT_BASE( void )
- FT_GlyphLoader_Rewind( FT_GlyphLoader* loader );
-
- FT_BASE( FT_Error )
- FT_GlyphLoader_Check_Points( FT_GlyphLoader* loader,
- FT_UInt n_points,
- FT_UInt n_contours );
-
- FT_BASE( FT_Error )
- FT_GlyphLoader_Check_Subglyphs( FT_GlyphLoader* loader,
- FT_UInt n_subs );
-
- FT_BASE( void )
- FT_GlyphLoader_Prepare( FT_GlyphLoader* loader );
-
- FT_BASE( void )
- FT_GlyphLoader_Add( FT_GlyphLoader* loader );
-
- FT_BASE( FT_Error )
- FT_GlyphLoader_Copy_Points( FT_GlyphLoader* target,
- FT_GlyphLoader* source );
-
-
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
- /**** ****/
- /**** ****/
- /**** 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;
- FTRenderer_render 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 ****/
- /**** ****/
- /**** ****/
- /*************************************************************************/
- /*************************************************************************/
- /*************************************************************************/
-
-
-#define FT_DEBUG_HOOK_TRUETYPE 0
-#define FT_DEBUG_HOOK_TYPE1 1
-
-
- /*************************************************************************/
- /* */
- /* <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. */
- /* */
- /* 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_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];
-
- } 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_UInt render_mode );
-
- typedef const char*
- (*FT_PSName_Requester)( FT_Face face );
-
- typedef FT_Error
- (*FT_Glyph_Name_Requester)( FT_Face face,
- FT_UInt glyph_index,
- FT_Pointer buffer,
- FT_UInt buffer_max );
-
- typedef FT_UInt
- (*FT_Name_Index_Requester)( FT_Face face,
- FT_String* glyph_name );
-
-
-#ifndef FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_New_Stream */
- /* */
- /* <Description> */
- /* Creates a new stream object. */
- /* */
- /* <Input> */
- /* filepathname :: The name of the stream (usually a file) to be */
- /* opened. */
- /* */
- /* stream :: A pointer to the stream object. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_EXPORT( FT_Error )
- FT_New_Stream( const char* filepathname,
- FT_Stream astream );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Done_Stream */
- /* */
- /* <Description> */
- /* Closes and destroys a stream object. */
- /* */
- /* <Input> */
- /* stream :: The stream to be closed and destroyed. */
- /* */
- FT_EXPORT( void )
- FT_Done_Stream( FT_Stream stream );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_New_Memory */
- /* */
- /* <Description> */
- /* Creates a new memory object. */
- /* */
- /* <Return> */
- /* A pointer to the new memory object. 0 in case of error. */
- /* */
- FT_EXPORT( FT_Memory )
- FT_New_Memory( void );
-
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* FT_Done_Memory */
- /* */
- /* <Description> */
- /* Discards memory manager. */
- /* */
- /* <Input> */
- /* memory :: A handle to the memory manager. */
- /* */
- FT_EXPORT( 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 */
projects / rrdtool.git / blobdiff