186 lines
9.6 KiB
C
186 lines
9.6 KiB
C
/***************************************************************************/
|
|
/* */
|
|
/* ftdriver.h */
|
|
/* */
|
|
/* FreeType font driver interface (specification). */
|
|
/* */
|
|
/* Copyright 1996-2000 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. */
|
|
/* */
|
|
/***************************************************************************/
|
|
|
|
|
|
#ifndef __FTDRIVER_H__
|
|
#define __FTDRIVER_H__
|
|
|
|
#include <ft2build.h>
|
|
#include FT_MODULE_H
|
|
|
|
FT_BEGIN_HEADER
|
|
|
|
|
|
typedef FT_Error (*FTDriver_initFace) ( FT_Stream stream,
|
|
FT_Face face,
|
|
FT_Int typeface_index,
|
|
FT_Int num_params,
|
|
FT_Parameter* parameters );
|
|
|
|
typedef void (*FTDriver_doneFace) ( FT_Face face );
|
|
|
|
|
|
typedef FT_Error (*FTDriver_initSize) ( FT_Size size );
|
|
|
|
typedef void (*FTDriver_doneSize) ( FT_Size size );
|
|
|
|
|
|
typedef FT_Error (*FTDriver_initGlyphSlot)( FT_GlyphSlot slot );
|
|
|
|
typedef void (*FTDriver_doneGlyphSlot)( FT_GlyphSlot slot );
|
|
|
|
|
|
typedef FT_Error (*FTDriver_setCharSizes) ( FT_Size size,
|
|
FT_F26Dot6 char_width,
|
|
FT_F26Dot6 char_height,
|
|
FT_UInt horz_resolution,
|
|
FT_UInt vert_resolution );
|
|
|
|
typedef FT_Error (*FTDriver_setPixelSizes)( FT_Size size,
|
|
FT_UInt pixel_width,
|
|
FT_UInt pixel_height );
|
|
|
|
typedef FT_Error (*FTDriver_loadGlyph) ( FT_GlyphSlot slot,
|
|
FT_Size size,
|
|
FT_UInt glyph_index,
|
|
FT_Int load_flags );
|
|
|
|
|
|
typedef FT_UInt (*FTDriver_getCharIndex) ( FT_CharMap charmap,
|
|
FT_Long charcode );
|
|
|
|
typedef FT_Error (*FTDriver_getKerning) ( FT_Face face,
|
|
FT_UInt left_glyph,
|
|
FT_UInt right_glyph,
|
|
FT_Vector* kerning );
|
|
|
|
|
|
typedef FT_Error (*FTDriver_attachFile) ( FT_Face face,
|
|
FT_Stream stream );
|
|
|
|
|
|
typedef FT_Error (*FTDriver_getAdvances) ( FT_Face face,
|
|
FT_UInt first,
|
|
FT_UInt count,
|
|
FT_Bool vertical,
|
|
FT_UShort* advances );
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Struct> */
|
|
/* FT_Driver_Class */
|
|
/* */
|
|
/* <Description> */
|
|
/* The font driver class. This structure mostly contains pointers to */
|
|
/* driver methods. */
|
|
/* */
|
|
/* <Fields> */
|
|
/* root :: The parent module. */
|
|
/* */
|
|
/* face_object_size :: The size of a face object in bytes. */
|
|
/* */
|
|
/* size_object_size :: The size of a size object in bytes. */
|
|
/* */
|
|
/* slot_object_size :: The size of a glyph object in bytes. */
|
|
/* */
|
|
/* init_face :: The format-specific face constructor. */
|
|
/* */
|
|
/* done_face :: The format-specific face destructor. */
|
|
/* */
|
|
/* init_size :: The format-specific size constructor. */
|
|
/* */
|
|
/* done_size :: The format-specific size destructor. */
|
|
/* */
|
|
/* init_slot :: The format-specific slot constructor. */
|
|
/* */
|
|
/* done_slot :: The format-specific slot destructor. */
|
|
/* */
|
|
/* set_char_sizes :: A handle to a function used to set the new */
|
|
/* character size in points + resolution. Can be */
|
|
/* set to 0 to indicate default behaviour. */
|
|
/* */
|
|
/* set_pixel_sizes :: A handle to a function used to set the new */
|
|
/* character size in pixels. Can be set to 0 to */
|
|
/* indicate default behaviour. */
|
|
/* */
|
|
/* load_glyph :: A function handle to load a given glyph image */
|
|
/* in a slot. This field is mandatory! */
|
|
/* */
|
|
/* get_char_index :: A function handle to return the glyph index of */
|
|
/* a given character for a given charmap. This */
|
|
/* field is mandatory! */
|
|
/* */
|
|
/* get_kerning :: A function handle to return the unscaled */
|
|
/* kerning for a given pair of glyphs. Can be */
|
|
/* set to 0 if the format doesn't support */
|
|
/* kerning. */
|
|
/* */
|
|
/* attach_file :: This function handle is used to read */
|
|
/* additional data for a face from another */
|
|
/* file/stream. For example, this can be used to */
|
|
/* add data from AFM or PFM files on a Type 1 */
|
|
/* face, or a CIDMap on a CID-keyed face. */
|
|
/* */
|
|
/* get_advances :: A function handle used to return the advances */
|
|
/* of 'count' glyphs, starting at `index'. the */
|
|
/* `vertical' flags must be set when vertical */
|
|
/* advances are queried. The advances buffer is */
|
|
/* caller-allocated. */
|
|
/* */
|
|
/* <Note> */
|
|
/* Most function pointers, with the exception of `load_glyph' and */
|
|
/* `get_char_index' can be set to 0 to indicate a default behaviour. */
|
|
/* */
|
|
typedef struct FT_Driver_Class_
|
|
{
|
|
FT_Module_Class root;
|
|
|
|
FT_Int face_object_size;
|
|
FT_Int size_object_size;
|
|
FT_Int slot_object_size;
|
|
|
|
FTDriver_initFace init_face;
|
|
FTDriver_doneFace done_face;
|
|
|
|
FTDriver_initSize init_size;
|
|
FTDriver_doneSize done_size;
|
|
|
|
FTDriver_initGlyphSlot init_slot;
|
|
FTDriver_doneGlyphSlot done_slot;
|
|
|
|
FTDriver_setCharSizes set_char_sizes;
|
|
FTDriver_setPixelSizes set_pixel_sizes;
|
|
|
|
FTDriver_loadGlyph load_glyph;
|
|
FTDriver_getCharIndex get_char_index;
|
|
|
|
FTDriver_getKerning get_kerning;
|
|
FTDriver_attachFile attach_file;
|
|
|
|
FTDriver_getAdvances get_advances;
|
|
|
|
} FT_Driver_Class;
|
|
|
|
|
|
FT_END_HEADER
|
|
|
|
#endif /* __FTDRIVER_H__ */
|
|
|
|
|
|
/* END */
|