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/* libwmf (<libwmf/types.h>): library for wmf conversion
Copyright (C) 2000 - various; see CREDITS, ChangeLog, and sources
The libwmf Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The libwmf Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the libwmf Library; see the file COPYING. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef LIBWMF_TYPES_H
#define LIBWMF_TYPES_H
#include <stdio.h>
#include <sys/types.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include <libwmf/fund.h>
#ifdef __cplusplus
extern "C" {
#endif
/* API Enumeration defs
*/
/**
* \b wmf_bool_t is the (enumeration) type used for boolean
*/
typedef enum _wmf_bool_t
{ wmf_false = 0, /**< False */
wmf_true /**< True */
} wmf_bool_t;
/**
* \b wmf_error_t is the (enumeration) type used for the library error state.
*/
typedef enum _wmf_error_t
{ wmf_E_None = 0, /**< No error. */
wmf_E_InsMem, /**< An attempt to allocate memory has failed. */
wmf_E_BadFile, /**< Attempt to open an unreadable file, or to read from an unopened file. */
wmf_E_BadFormat, /**< The metafile, if indeed it is a metafile, has been corrupted. */
wmf_E_EOF, /**< An unexpected end-of-file has been reached. */
wmf_E_DeviceError, /**< Device-layer error. */
wmf_E_Glitch, /**< Programmer's error. Sorry. */
wmf_E_Assert, /**< Internally forced error. */
wmf_E_UserExit /**< The status function has returned non-zero; exit is premature. */
} wmf_error_t;
/**
* \b wmf_page_t is the (enumeration) type used to indicate page size.
*/
typedef enum _wmf_page_t
{ wmf_P_A5, /**< A5 (420 x 595) */
wmf_P_A4, /**< A4 (595 x 842) */
wmf_P_A3, /**< A3 (842 x 1191) */
wmf_P_A2, /**< A2 (1191 x 1684) */
wmf_P_A1, /**< A1 (1684 x 2384) */
wmf_P_A0, /**< A0 (2384 x 3370) */
wmf_P_B5, /**< B5 (516 x 729) */
wmf_P_Letter, /**< Letter (612 x 792) */
wmf_P_Legal, /**< Legal (612 x 1008) */
wmf_P_Ledger, /**< Ledger (1224 x 792) */
wmf_P_Tabloid /**< Tabloid (792 x 1224) */
} wmf_page_t;
/**
* \b wmf_image_t is the (enumeration) type used to indicate image type.
*/
typedef enum _wmf_image_t
{ wmf_I_gd
} wmf_image_t;
/**
* User redefinable function for input-stream access:
*
* wmfRead: returns unsigned char cast to int, or EOF
*
* See \b wmf_bbuf_input().
*/
typedef int (*wmfRead) (void*);
/**
* User redefinable function for input-stream access:
*
* wmfSeek: returns (-1) on error, else 0
*
* See \b wmf_bbuf_input().
*/
typedef int (*wmfSeek) (void*,long);
/**
* User redefinable function for input-stream access:
*
* wmfTell: returns (-1) on error, else pos
*
* See \b wmf_bbuf_input().
*/
typedef long (*wmfTell) (void*);
/**
* User redefinable function for character-based output-stream:
*
* wmfSPutS: returns EOF on error, else 0
*
* See \b wmfStream.
*/
typedef int (*wmfSPutS) (char*,void*);
/**
* User redefinable function for character-based output-stream:
*
* wmfReset: resets stream to start; returns non-zero on failure
*
* See \b wmfStream.
*/
typedef int (*wmfReset) (void*);
/**
* User definable function indicating progress.
*
* @param context handle for user data
* @param fraction fraction of metafile parsed so far
*
* @return Should return non-zero only if premature exit is required for whatever reason.
*
* See \b wmf_status_function().
*/
typedef int (*wmfStatus) (void* context,float fraction);
/* API types
*/
typedef struct _wmfD_Coord wmfD_Coord;
typedef struct _wmfD_Rect wmfD_Rect;
typedef struct _wmfMapping wmfMapping;
typedef struct _wmfFontMap wmfFontMap;
typedef struct _wmfHead wmfHead; /* Bit nonsensical having these three at all ?? */
typedef struct _wmfMetaHeader wmfMetaHeader,*wmfFile;
typedef struct _wmfPlaceableMetaHeader wmfPlaceableMetaHeader;
typedef struct _wmfAPI_Options wmfAPI_Options;
typedef struct _wmfAPI wmfAPI;
typedef struct _wmfStream wmfStream;
typedef struct _wmfImage wmfImage;
typedef struct _wmfAttributes wmfAttributes;
typedef struct _wmfAttributeStore wmfAttributeStore;
/* API Structure defs
*/
/**
* Device coordinate.
*/
struct _wmfD_Coord
{ float x;
float y;
};
/**
* Device rectangle.
*/
struct _wmfD_Rect
{ /**
* Device coordinate of top left corner (TL.x < BR.x, TL.y < BR.y).
*/
wmfD_Coord TL;
/**
* Device coordinate of bottom right corner.
*/
wmfD_Coord BR;
};
struct _wmfMapping
{ char* name;
char* mapping;
/* I had been hoping to keep FT out of this file, but
* it seems easier just to use the FT encoding defs
* rather than create some kind of wrapper...
*/
FT_Encoding encoding;
};
struct _wmfFontMap
{ char* name; /* wmf font name */
char* normal; /* postscript font names */
char* italic;
char* bold;
char* bolditalic;
};
/**
* Structure containing list of XML attributes
*/
struct _wmfAttributes
{ char * name;
char ** atts;
unsigned long count;
unsigned long max;
unsigned char * buffer;
unsigned long length;
unsigned long offset;
};
/**
* Structure containing list of lists of XML attributes
*/
struct _wmfAttributeStore
{ wmfAttributes * attrlist;
unsigned long count;
unsigned long max;
};
/**
* @internal
*/
struct _wmfPlaceableMetaHeader
{ U32 Key; /* Magic number (always 9AC6CDD7h) */
U16 Handle; /* Metafile HANDLE number (always 0) */
S16 Left; /* Left coordinate in metafile units */
S16 Top; /* Top coordinate in metafile units */
S16 Right; /* Right coordinate in metafile units */
S16 Bottom; /* Bottom coordinate in metafile units */
U16 Inch; /* Number of metafile units per inch */
U32 Reserved; /* Reserved (always 0) */
U16 Checksum; /* Checksum value for previous 10 U16s */
};
/**
* @internal
*/
struct _wmfHead
{ U16 FileType; /* Type of metafile (0=memory, 1=disk) */
U16 HeaderSize; /* Size of header in U16S (always 9) */
U16 Version; /* Version of Microsoft Windows used */
U32 FileSize; /* Total size of the metafile in U16s */
U16 NumOfObjects; /* Number of objects in the file */
U32 MaxRecordSize; /* The size of largest record in U16s */
U16 NumOfParams; /* Not Used (always 0) */
};
/**
* @internal
*/
struct _wmfMetaHeader
{ wmfHead* wmfheader;
wmfPlaceableMetaHeader* pmh;
FILE* filein;
long pos;
int placeable;
};
struct _wmfAPI_Options
{ void* context;
void* (*malloc) (void* context,size_t size);
void* (*realloc) (void* context,void* mem,size_t size);
void (*free) (void* context,void* mem);
int argc;
char** argv;
char** fontdirs; /* NULL-terminated list of directories to search for font files */
struct
{ wmfFontMap* wmf; /* {0,*}-terminated list: wmf-font-name -> ps-font-name */
wmfMapping* sub; /* {0,*}-terminated list: wmf-font-name substring equiv */
wmfMapping* ps; /* {0,*}-terminated list: ps-font-name -> pfb-file-name */
} font;
char* sys_fontmap_file;
char* xtra_fontmap_file;
char* gs_fontmap_file;
char* write_file;
void (*function) (wmfAPI*);
char* module;
char** dirs;
FILE* debug_out;
FILE* error_out;
};
/**
* @internal
*/
struct _wmfAPI
{ wmf_error_t err; /* current state of API; wmf_E_None, hopefully... */
wmfHead Head; /* structures containing meta file general properties... */
wmfPlaceableMetaHeader PlaceableMetaHeader;
wmfMetaHeader MetaHeader;
wmfFile File;
FILE* debug_out; /* Output streams for debugger & error reports... */
FILE* error_out;
wmfAttributeStore store;
void* write_data; /* Output stream data for --wmf-write=<file> */
void* user_data; /* These are hooks for data to hang on to... */
void* device_data;
void* player_data;
void* buffer_data;
void* memory_data;
void* function_reference;
void* font_data;
char** fonts; /* NULL-terminated list of fonts loaded during wmf_scan () */
void* color_data;
struct /* Input stream functions... */
{ wmfRead read;
wmfSeek seek;
wmfTell tell;
} bbuf;
struct
{ void* context;
wmfStatus function; /* return non-zero if premature exit desired */
} status;
struct
{ unsigned long length;
char* buffer;
} string_buffer; /* this is a general purpose char buffer */
unsigned long flags; /* General flags... */
};
/**
* WMF_ERROR_STATE(wmfAPI* API) -> (wmf_error_t) library error state
*/
#define WMF_ERROR_STATE(Z) (((wmfAPI*)(Z))->err)
/**
* Structure describing user-definable character-based output stream.
*
* \b wmf_stream_create() and \b wmf_ztream_create() both return pointers to \b wmfStream objects, but
* an application can create its own implementation if preferred.
*
* @verbatim
typedef int (*wmfSPutS) (char* str,void* context);
typedef int (*wmfReset) (void* context);
@endverbatim
*
* \b wmfSPutS: writes string \p str; returns EOF on error, else 0.
*
* \b wmfReset: resets stream to start; returns non-zero on failure.
*
* \p context is a handle for user data
*/
struct _wmfStream
{ void* context;
wmfSPutS sputs;
wmfReset reset;
};
/**
* @internal
* Macro-wrapper for input stream function:
* (int) WMF_READ((wmfAPI*) API) - returns unsigned char cast to int, or EOF
*/
#define WMF_READ(Z) ((Z)->bbuf.read ((Z)->buffer_data))
/**
* @internal
* Macro-wrapper for input stream function:
* (int) WMF_SEEK((wmfAPI*) API,(long) position) - returns (-1) on error, else 0
*/
#define WMF_SEEK(Z,P) ((Z)->bbuf.seek ((Z)->buffer_data,P))
/**
* @internal
* Macro-wrapper for input stream function:
* (long) WMF_TELL((wmfAPI*) API) - returns (-1) on error, else current position
*/
#define WMF_TELL(Z) ((Z)->bbuf.tell ((Z)->buffer_data))
#ifdef __cplusplus
}
#endif
/**
* Structure referencing an image
*/
struct _wmfImage
{ wmf_image_t type;
U16 width;
U16 height;
void* data;
};
#endif /* ! LIBWMF_TYPES_H */
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