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/*
* Copyright (c) 1990-2013 Paul Vojta and the xdvik development team
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PAUL VOJTA OR ANY OTHER AUTHOR OF THIS SOFTWARE BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef DVI_INIT_H_
#define DVI_INIT_H_
#include "xdvi.h"
#if FREETYPE
# include <ft2build.h>
# include FT_FREETYPE_H
#endif
typedef enum {
NO_ERROR = 0,
WRONG_DVI_VERSION,
DVI_CORRUPTED,
NOT_A_DVI_FILE,
POSTAMBLE_NO_POST,
POSTAMBLE_NO_MATCH,
POSTAMBLE_NON_FNTDEF,
NOT_ALL_PIXEL_FILES_FOUND,
NO_BOP_AT_PAGEDESC,
FILE_HAS_ZERO_SIZE,
FILE_DOESNT_EXIST,
FILE_IS_DIRECTORY,
PS_CONVERSION_FAILED,
PDF_CONVERSION_FAILED,
UNKNOWN_ERROR
} dviErrFlagT;
extern const char *get_dvi_error(dviErrFlagT flag);
extern Boolean internal_open_dvi(const char *path, dviErrFlagT *errmsg,
#if DELAYED_MKTEXPK
Boolean read_fonts, Boolean initialize_fonts
#else
Boolean load_fonts
#endif
);
extern char *open_dvi_file_wrapper(const char *filename,
Boolean from_command_line,
Boolean open_new_instance,
Boolean *tried_dvi_ext,
Boolean from_file_history);
extern char *get_tmp_dvi_name(void);
/* font stuff */
/*
* Bitmap structure for raster ops.
*/
struct bitmap {
unsigned short w, h; /* width and height in pixels */
short bytes_wide; /* scan line width in bytes */
char *bits; /* pointer to the bits */
};
/*
* Per-character information.
* There is one of these for each character in a font (non-virtual fonts only).
* All fields are filled in at font definition time,
* except for the bitmap, which is "faulted in"
* when the character is first referenced.
*/
struct glyph {
long addr; /* address of bitmap in font file */
long dvi_adv; /* DVI units to move reference point */
short x, y; /* x and y offset in pixels */
struct bitmap bitmap; /* bitmap for character */
short x2, y2; /* x and y offset in pixels for shrunken bitmap */
#if GREY
# if COLOR
struct fgrec *fg; /* fgrec for which these pixmaps are valid */
# endif
/* `2' means `shrunken' here */
XImage *image2; /* shrunken pixmap for antialiased character */
char *pixmap2; /* image data pointer for image2 */
char *pixmap2_gc2; /* separate image data for drawing image to globals.gc.fore2 */
#endif /* GREY */
struct bitmap bitmap2; /* shrunken bitmap for character */
};
/*
* Per-character information for virtual fonts
*/
struct macro {
ubyte *pos; /* address of first byte of macro */
ubyte *end; /* address of last+1 byte */
long dvi_adv; /* DVI units to move reference point */
Boolean free_me; /* if free(pos) should be called when */
/* freeing space */
};
/*
* The layout of a font information block.
* There is one of these for every loaded font or magnification thereof.
* Duplicates are eliminated: this is necessary because of possible recursion
* in virtual fonts.
*
* Also note the strange units. The design size is in 1/2^20 point
* units (also called micro-points), and the individual character widths
* are in the TFM file in 1/2^20 ems units, i.e., relative to the design size.
*
* We then change the sizes to SPELL units (unshrunk pixel / 2^16).
*/
#define NOMAGSTP (-29999)
#define FONT_IN_USE 1 /* used for housekeeping */
#define FONT_LOADED 2 /* if font file has been read */
#define FONT_VIRTUAL 4 /* if font is virtual */
/* forward declarations */
struct font;
struct tn;
typedef void (*read_char_proc) (struct font *, wide_ubyte);
struct font {
struct font *next; /* link to next font info block */
char *fontname; /* name of font */
float fsize; /* size information (dots per inch) */
int magstepval; /* magstep number * two, or NOMAGSTP */
FILE *file; /* open font file or NULL */
const char *filename; /* name of font file */
long checksum; /* checksum */
unsigned short timestamp; /* for LRU management of fonts */
ubyte flags; /* flags byte (see values below) */
wide_ubyte maxchar; /* largest character code */
double dimconv; /* size conversion factor */
set_char_proc set_char_p; /* proc used to set char */
/* these fields are used by (loaded) non-virtual fonts */
read_char_proc read_char; /* function to read bitmap */
struct glyph *glyph;
/* these fields are used by (loaded) virtual fonts */
struct font **vf_table; /* list of fonts used by this vf */
struct tn *vf_chain; /* ditto, if TeXnumber >= VFTABLELEN */
struct font *first_font; /* first font defined */
struct macro *macro;
#if FREETYPE
/* these fields are used by (loaded) FreeType fonts */
struct ftfont *ft; /* master record for font (all sizes) */
double pixsize; /* scaled size of the font in pixels */
FT_Size size;
struct font *next_size; /* next font from same face */
#endif
};
struct tn {
struct tn *next; /* link to next TeXnumber info block */
unsigned long TeXnumber; /* font number (in DVI file) */
struct font *fontp; /* pointer to the rest of the info */
};
extern void reset_fonts(void);
#if COLOR
extern void reset_colors(void);
extern void full_reset_colors(void);
#endif
extern void realloc_font(struct font *, wide_ubyte);
extern void realloc_virtual_font(struct font *, wide_ubyte);
extern Boolean load_font(struct font *
#if DELAYED_MKTEXPK
, Boolean load_font_now
#endif
);
extern struct font *define_font(
#if DELAYED_MKTEXPK
Boolean read_fonts,
Boolean initialize_fonts,
#else
Boolean load_font_now,
#endif
FILE *,
wide_ubyte,
struct font *,
struct font **,
unsigned int,
struct tn **,
Boolean *not_found_flag);
extern void init_page(void);
extern void form_dvi_property(void);
extern Boolean dvi_file_changed(void);
extern Boolean load_dvi_file(
#if !DELAYED_MKTEXPK
Boolean load_fonts,
#endif
dviErrFlagT *errflag);
extern void read_PK_index(struct font *, wide_bool);
extern void read_GF_index(struct font *, wide_bool);
extern unsigned long read_VF_index(struct font *, wide_bool);
#if FREETYPE
extern Boolean load_ft_font(struct font *fontp);
#endif
extern Boolean set_paper_type(const char *arg);
extern Boolean find_postamble(FILE *fp, dviErrFlagT *errflag);
extern Boolean read_postamble(FILE *fp, dviErrFlagT *errflag,
#if DELAYED_MKTEXPK
Boolean read_fonts, Boolean initialize_fonts
#else
Boolean load_fonts
#endif
);
extern void close_old_filep(void);
extern Boolean process_preamble(FILE *fp, dviErrFlagT *errflag);
extern FILE *file_exists(const char *path, dviErrFlagT *errflag);
extern char *find_dvi_file(const char *filename, Boolean *tried_dvi_ext, Boolean from_file_history);
#endif /* DVI_INIT_H_ */
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