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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_DRAW_H_
#define DVI_DRAW_H_
#include "xdvi.h"
extern void prescan(FILE *fp);
/* forward declarations */
struct font;
struct tn;
/* this information is saved when using virtual fonts */
struct drawinf {
struct framedata data;
struct font *fontp;
set_char_proc set_char_p;
unsigned long tn_table_len;
struct font **tn_table;
struct tn *tn_head;
ubyte *pos, *end; /* pointers to a scan buffer defined in dvi-draw.c */
struct font *virtual;
#ifdef TEXXET
int dir;
#endif
};
struct src_parsed_special {
int line;
int col;
char *filename;
size_t filename_len;
};
extern void src_parse(const char *str, int str_len, struct src_parsed_special *parsed);
/*
* pixel_conv is currently used only for converting absolute positions
* to pixel values; although normally it should be
*
* ((int) ((x) / currwin.shrinkfactor + (1 << 15) >> 16)),
*
* the rounding is achieved instead by moving the constant 1 << 15 to
* PAGE_OFFSET in dvi-draw.c.
*/
#define pixel_conv(x) ((int) ((x) / currwin.shrinkfactor >> 16))
#define pixel_round(x) ((int) ROUNDUP(x, currwin.shrinkfactor << 16))
/* entries below with the characters 'dvi' in them are actually stored in
scaled pixel units */
#define DVI_H currinf.data.dvi_h
#define PXL_H pixel_conv(currinf.data.dvi_h)
#define DVI_V currinf.data.dvi_v
#define PXL_V currinf.data.pxl_v
#define WW currinf.data.w
#define XX currinf.data.x
#define YY currinf.data.y
#define ZZ currinf.data.z
extern void draw_page(void);
extern void source_reverse_search(int, int, wide_bool);
extern void source_special_show(wide_bool);
extern void source_forward_search(const char *);
extern void anchor_search(const char *str);
/*
this is needed by any program that wants to use spcl_scan,
since the buffer is supposed to be of that length.
*/
#ifndef DVI_BUFFER_LEN
#define DVI_BUFFER_LEN 2048
#endif
extern void open_font_file(struct font *fontp);
extern long text_do_char(FILE *fp, struct scan_info *info, wide_ubyte ch);
extern Boolean spcl_scan(Boolean(*spcl_proc) (char *str, int str_len, void *data), void *data, Boolean return_if_found, FILE *fp);
extern void geom_scan_part(long(*char_proc)(FILE *, struct scan_info *, wide_ubyte),
FILE *fp, struct scan_info *info, struct frame *min_frame, double current_dimconv);
extern void geom_scan(long(*char_proc)(FILE *, struct scan_info *, wide_ubyte),
FILE *fp, struct scan_info *info, int pageno);
extern off_t save_file_status(FILE *fp, struct drawinf *currinf_save, ubyte *maxchar_save);
extern void reinit_text_scan(void);
extern void restore_file_status(FILE *fp, struct drawinf currinf_save, ubyte maxchar_save, off_t pos_save);
void htex_do_special(const char *str, size_t len);
extern setcharRetvalT set_char(
#ifdef TEXXET
wide_ubyte cmd,
#endif
wide_ubyte ch);
extern setcharRetvalT load_n_set_char(
#ifdef TEXXET
wide_ubyte cmd,
#endif
wide_ubyte ch);
extern setcharRetvalT set_vf_char(
#ifdef TEXXET
wide_ubyte cmd,
#endif
wide_ubyte ch);
extern setcharRetvalT set_ft_char(
#if TEXXET
wide_ubyte cmd,
#endif
wide_ubyte ch);
#ifdef GREY
void init_plane_masks(void);
#endif
#if COLOR
struct rgb; /* forward declaration */
Pixel alloc_color(const struct rgb *, Pixel);
void do_color_change(void);
#elif GREY
void init_pix(void);
#endif
void dvi_fmt_error(const char *message, ...);
#endif /* DVI_DRAW_H_ */
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