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GRXFILE.H
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1992-04-10
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/**
** GRXFILE.H
**
** Copyright (C) 1992, Csaba Biegl
** 820 Stirrup Dr, Nashville, TN, 37221
** csaba@vuse.vanderbilt.edu
**
** This file is distributed under the terms listed in the document
** "copying.cb", available from the author at the address above.
** A copy of "copying.cb" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.cb".
** You should also have received a copy of the GNU General Public
** License along with this program (it is in the file "copying");
** if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
** Cambridge, MA 02139, USA.
**
** This program 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 General Public License for more details.
**/
#ifndef _GRXFILE_H_
#define _GRXFILE_H_
#if defined(__GNUC__) && !defined(near)
# define near
# define far
# define huge
#endif
#define FONT_MAGIC 0x19590214L
#define FONTDIR_MAGIC 0x19270104L
#define CURSOR_MAGIC 0x18480315L
#define BITMAP_MAGIC 0x19390901L
#define PIXMAP_MAGIC 0x19700302L
#define ICON_MAGIC 0x19840728L
#define RGBDIR_MAGIC 0x19561023L
/*
* font file structure:
* +-----------------------+
* | MAGIC NUMBER |
* +-----------------------+
* | FONT HEADER |
* +-----------------------+
* | PROPORTIONAL |
* | WIDTH TABLE |
* | (16 bit ints) |
* | (optional) |
* +-----------------------+
* | BITMAP |
* +-----------------------+
*/
typedef struct {
long magic; /* magic number */
long bitmapsize; /* size of the bitmap */
GrFont h; /* font header */
} FntFileHdr;
/*
* font directory file structure:
* +-----------------------+
* | MAGIC NUMBER |
* +-----------------------+
* | # OF ENTRIES |
* +-----------------------+
* | 1st FONT HEADER |
* +-----------------------+
* | 2nd FONT HEADER |
* +-----------------------+
* | : |
* | : |
* +-----------------------+
* | last FONT HEADER |
* +-----------------------+
*/
typedef struct {
long magic; /* magic number */
long numentries; /* # of GrFont structures in file */
} FntDirHdr;
#define FNTENV "GRXFONT" /* font path environment variable */
#define FNTEXT ".fnt" /* font file extension */
#define DIREXT ".dir" /* font directory file extension */
extern char _GrFontPath[]; /* user specified font path */
/*
* loaded resource list management
*/
typedef struct _reslist { /* list of loaded resources */
struct _reslist *next; /* next item */
void *data; /* the resource */
char name[1]; /* full path name to the resource */
} ResList;
extern void _GrAddToResList(void *data,char *name,ResList **list);
extern void _GrRemoveFromResList(void *data,ResList **list);
extern void *_GrLookupInResList(char *name,ResList *list);
/*
* file utilities
*/
extern void _GrSetPath(char *name,char *pathbuffer);
extern char *_GrGetFname(char *name,char *path,char *env,char *ext,char *where);
extern int _GrFileOpen(char *name);
extern void _GrFileClose(int handle);
#ifdef __GNUC__
# define _GrFarRead(file,buff,size) read(file,buff,(int)size)
#endif
#ifdef __TURBOC__
extern long _GrFarRead(int file,void far *buff,long size);
#endif
#endif /* whole file */