/* -*-C-*- dvica2.c */
/* Developed for Canon LBP-8 A2 from DVIIMP.C and DVIJEP.C [03-Jan-87]
   Page references in comments refer to
   Canon LBP-8 A1/A2 Laser Beam Printer User's Manual
   edition PUB.R-IE-034-V1C.0186B2.5 (1985)
   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    NB: This is a preliminary release.  Serious problems with the  Canon
    A2 downloaded font mechanism force loading of characters as  bitmaps
    at every reference, making it very slow....

    This new experimental version, DVICA2.C, has been extended by  Pekka
    Pietilainen <TFYS-PP@FINOU.BITNET> at Oulu University, Oulu, Finland
    during June-August 1987.   It permits downloading  of characters  as
    fonts, rather than as bitmaps, with control over the character  size
    adjustable  by  run-time  options  -g<stor_fonts>,  -s<size  limit>,
    -u<merit factor>, and -v<stor_limit>.  These options will likely  be
    removed as more experience with this driver is obtained.  It has not
    been possible to test it at Utah, since we no longer have a Canon A2
    available to us.
   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/

/*-->DVICAN*/
/**********************************************************************/
/******************************* dvican *******************************/
/**********************************************************************/

#include "dvihead.h"

/**********************************************************************/
/************************  Device Definitions  ************************/
/**********************************************************************/

/* All output-device-specific definitions go here.  This section must
be changed when modifying a dvi driver for use on a new device */

#undef CANON_A2
#define  CANON_A2  1			/* conditional compilation flag */

#define CANON_TEST 1			/* this may be used ONLY inside */
					/* #if CANON_A2 ... #endif code */

#define VERSION_NO	"2.10b [experimental]"	/* DVI driver version number */

#define  DEVICE_ID	"Canon LBP-8 A2 laser printer"
					/* this string is printed at runtime */

#define OUTFILE_EXT	"ca2"

#define  BYTE_SIZE	  8		/* output file byte size */

#undef STDRES
#define STDRES  1			/* to get standard font resolution */

#define CONCBUFFSIZE  512	/* file copy buffer size */

#define  MAXLINE	4096		/* maximum input file line size */
					/* it is needed only in special() */
#define  LOADSEQSIZE	10		/* Bytes in bitmap command */
#define  STOR_LIMIT	40000		/* Memory size */
#define  STOR_FONTS	32000		/* Memory for one font */
#define  MERIT_FACT	20		/* Merit to down load character */

#define  XDPI		300		/* horizontal dots/inch */
#define  XPSIZE		9		/* horizontal paper size in inches */
#define  XSIZE		(((XDPI*XPSIZE+2*HOST_WORD_SIZE-1)/\
				(2*HOST_WORD_SIZE))*(2*HOST_WORD_SIZE))
					/* number of horizontal dots; */
					/* MUST BE multiple of */
					/* 2*HOST_WORD_SIZE */

#define  YDPI		300		/* vertical dots/inch */
#define  YPSIZE		11		/* vertical paper size in inches */
#define  YSIZE		(YDPI*YPSIZE)	/* number of vertical dots */

/* The following values may be printer model dependent, or even  printer
serial number  dependent.  These  values were  obtained with  the  LaTeX
TESTPAGE.TEX file for a Canon LBP-8  A2 printer; they express that  fact
that the real (0,0) is 30 dots to  the left of, and 111 dots above,  the
top left corner of an 8.5in x  11in page.  This disagrees with p. 53  of
the User's Manual which gives values of 48 and 60. */

#define XORIGIN		 30		/* measured pixel coordinates of */
#define YORIGIN		111		/* page origin (should be at (0,0)) */

/* All Canon A2 command sequences are defined symbolically here, so that no
magic byte strings appear in the text. */

#define CSI "\033["		/* control sequence introducer */

#define DOT_MODE "\033[11h"	/* coordinates in dots */

#define FONTNUMBER(n) (int)(200 + (n)) /* user font number in 200..255 */

#define GS_NUMBER(n) (int)(3840 + (n))	/* graphics set number in 3840..4095 */

#define HARD_RESET "\033c"	/* hard reset to power-on defaults */
#define SOFT_RESET "\033<"

#define ISO_MODE "\033;"	/* ISO text mode */

#define RESET_MODE "\033[?1;3;4;5;6;7l"	/* set no auto CR/LF, no LF with CR, */
				/* no CR with LF, no CR with FF, no CR */
				/* with VT */

#define SEL_PAINT "\033[2&z"	/* select paint memory mode - full */

#define INIT_PARAMS "\033="	/* initialize parameters */

#define SET_MODE "\033[?2h"	/* set no auto FF, no auto position feed */

#define SIZE_UNIT "\033[7\040I"	/* units of 1/300 inch (i.e. dots) */

#define SPACING_INCREMENT "\033[0;0\040G"	/* set HMI and VMI to zero; */
				/* all character spacing is done explicitly */

#define PROPORT_PITCH "\033[?0\040K"	/* select proportional pitch */

#define STORE_POS "\033[1x"		/* store current position */

#define RESTORE_POS "\033[x"		/* restore position */

#define STOREPOS OUTS(STORE_POS)

#define RESTOREPOS OUTS(RESTORE_POS)

#define PAGE_EJECT "\033[z"		/* eject page */
/* Horizontal rule with lower-left corner at (x,y).  NB: h in 1..9 */
#define HRULE(x,y,w,h) {MOVETO(x,y-(h>>1)); OUTCSI; OUTNUM(h); OUTC('{');\
    RMOVEX(w); OUTCSI; OUTC('}');}

/* Map characters (0..32,33..127) to (160..192,33..127) */
#define MAPCHAR(c) (((c) > 32) ? (c) : ((c) + 160))

/* Move absolute to (x,y), page origin in lower left corner */
#define MOVETO(x,y) {MOVEX(x); MOVEY(y);}

/* Move absolute to (x,current y), page origin in lower left corner */
#define MOVEX(x) {OUTCSI; OUTNUM(x); OUTC('\140');}

/* Move absolute to (current x,y), page origin in lower left corner */
#define MOVEY(y) {OUTCSI; OUTNUM(YSIZE-y); OUTC('d');}

/* Output bitmap prefix to be followed by <bytecount> bytes of the bitmap */
#define OUTBITMAP(bytecount,bytewidth) {\
    OUTCSI;\
    OUTNUM(bytecount);\
    OUTC(';');\
    OUTNUM(bytewidth);\
    OUTS(".r");}

/* Output TeX character number with mapping to Canon number */
#define OUTCHAR(c) OUTC(MAPCHAR(c))
#define FOUTCHAR(c) FOUTC(MAPCHAR(c))

/* Output control sequence prefix */
#define OUTCSI {OUTC('\033'); OUTC('[');}
#define FOUTCSI {FOUTC('\033');FOUTC('[');}

/* Output a number as a minimal decimal digit string */
#define OUTNUM(n) OUTF("%d",n)

/* Eject a page from the printer--this is the last command on each page */
#define PAGEEJECT  OUTC('\f')

/* Move relative by (dx,0) from current point */
#define RMOVEX(dx) if ((dx) > 0) \
	    {OUTCSI; OUTNUM(dx); OUTC('a');} \
	else if ((dx) < 0) \
	    {OUTCSI; OUTNUM(-(dx)); OUTC('j');}

/* Move relative by (0,dy) from current point */
#define RMOVEY(dy) if ((dy) > 0) \
	    {OUTCSI; OUTNUM(dy); OUTC('k');} \
	else if ((dy) < 0) \
	    {OUTCSI; OUTNUM(-(dy)); OUTC('e');}

/* Set  the number  of copies  of the  current page  (issue just  before
PAGEEJECT) */
#define SETCOPIES(n) {OUTCSI; OUTNUM(n); OUTC('v');}

/* Set the current font number.  Canon A2 seems to need both a font
number and an encoded graphics set number, sigh... */
#if    OS_ATARI
#define SETCURRENTFONT(n) setcurrentfont(n)
void
setcurrentfont(n)
UNSIGN16 n;
{
    OUTS("\033\050");
    OUTC(0x20 | (0x0f & (GS_NUMBER(n)>>8)));
    OUTC(0x20 | (0x0f & (GS_NUMBER(n)>>4)));
    OUTC(0x30 | (0x0f & (GS_NUMBER(n))));
    OUTF2("%s%dy",CSI,FONTNUMBER(n));
}
#else
#define SETCURRENTFONT(n) {OUTS("\033\050");\
    OUTC(0x20 | (0x0f & (GS_NUMBER(n)>>8)));\
    OUTC(0x20 | (0x0f & (GS_NUMBER(n)>>4)));\
    OUTC(0x30 | (0x0f & (GS_NUMBER(n))));\
    OUTF2("%s%dy",CSI,FONTNUMBER(n));}
#endif

/* Vertical rule with lower-left corner at (x,y). NB: w in 1..9 */
#define VRULE(x,y,w,h) {MOVETO(x+((w+1)>>1),y); OUTCSI; OUTNUM(w); OUTC('{');\
    RMOVEY(h); OUTCSI; OUTC('}');}

FILE*      savefp = (FILE*)NULL;/* font output file */
UNSIGN16   merit_fact;		/* merit factor to download a character */
struct new_sizes {
     UNSIGN32   stor_inc;
     COORDINATE new_w;
     COORDINATE new_h;
     COORDINATE new_d;
};
UNSIGN32   stor_limit;		/* storage for down loaded fonts */
UNSIGN32   stor_total;		/* total used storage */
UNSIGN32   stor_fonts;		/* storage for single font */
char       tmoname[MAXFNAME];	/* temporary output file */

#if    ANSI
BOOLEAN    bigchar(struct font_entry *,BYTE);
void	   concatenate(FILE*,FILE*);
void	   dumpfnts(struct font_entry *);
BOOLEAN    isnewbig(struct font_entry *,struct char_entry *,struct new_sizes*);
void	   loadcmap(struct font_entry *,BYTE);
void       outcrow(BYTE,UNSIGN16);
#else
BOOLEAN    bigchar();
void	   concatenate();
void	   dumpfnts();
BOOLEAN    isnewbig();
void	   loadcmap();
void       outcrow();
#endif

#include "main.h"
#include "abortrun.h"
#include "actfact.h"
#include "alldone.h"

/*-->bopact*/
/**********************************************************************/
/******************************* bopact *******************************/
/**********************************************************************/

void
bopact()			/* beginning of page action */
{
    str_ycp = -1;		/* last string ycp */
}

/*-->bigchar*/
/**********************************************************************/
/****************************** bigchar *******************************/
/**********************************************************************/

/* Check if the character is too big to be down loaded */

BOOLEAN
bigchar(tfptr, c)
struct font_entry *tfptr;
BYTE c;
{
	struct char_entry *tcptr;
	struct new_sizes increm;

	tcptr = &(tfptr->ch[c]);
	if(tcptr->isloaded)
		return(FALSE);
	if(tcptr->isknown)
		return(tcptr->istoobig);
	tcptr->isknown = TRUE;

	return(tcptr->istoobig = isnewbig(tfptr, tcptr, &increm));
}

#include "chargf.h"
#include "charpk.h"
#include "charpxl.h"
#include "clrrow.h"

/*-->concatenate*/
/**********************************************************************/
/**************************** concatenate *****************************/
/**********************************************************************/
void
concatenate(f1, f2)
FILE *f1, *f2;
{
     char buffer[CONCBUFFSIZE];
     UNSIGN16 n;

     rewind(f2);
     while((n = fread(buffer, 1, CONCBUFFSIZE, f2)) > 0)
	fwrite(buffer, 1, n, f1);
}

#include "dbgopen.h"

/*-->devinit*/
/**********************************************************************/
/****************************** devinit *******************************/
/**********************************************************************/

void
devinit(argc,argv)		/* initialize device */
int argc;
char *argv[];
{
    FOUTS(HARD_RESET);		/* Reset the printer */
    /*FOUTS(HARD_RESET);*/
    FOUTS(SEL_PAINT);		/* Full paint mode */
    FOUTS(DOT_MODE);		/* spacing in units of dots */
    FOUTS(SIZE_UNIT);		/* ditto, sigh... */
    FOUTS(SPACING_INCREMENT);	/* HMI and VMI to 0 to prevent auto spacing */
    FOUTS(SET_MODE);		/* these two prevent page ejects when objects */
    FOUTS(RESET_MODE);		/* extend into margins */
    FOUTS(PROPORT_PITCH);	/* proportional pitch */
    font_count = 0;		/* no font numbers are assigned yet */
    font_switched = TRUE;
}

/*-->devterm*/
/**********************************************************************/
/****************************** devterm *******************************/
/**********************************************************************/

void
devterm()			/* terminate device */
{
    struct font_entry *fentr;
    int i;

    if(!quiet)
	(void)fprintf(stderr,"\nFont sizes and storages\n");
    for(i = 0; i < font_count; i++) {
	fentr = font_table[ i ];
	dumpfnts(fentr);
    }
    if(!quiet)
	(void)fprintf(stderr,"Total storage: %d\n",stor_total);
    concatenate(savefp, plotfp); /* Concatenate fonts and TeX output */
    fclose(plotfp);
    unlink(tmoname);
    plotfp = savefp;

    OUTS(HARD_RESET);		/* reset to power-up status */
    OUTS(HARD_RESET);		/* reset to power-up status */
    OUTF("\n\n\n    %s\n",dvoname);
}

/*-->dumpchar*/
/**********************************************************************/
/****************************** dumpchar ******************************/
/**********************************************************************/
/* Dump character pixmap to output */

void
dumpchar(c, chptr, baseline, width, height)
UNSIGN16 c;
struct char_entry *chptr;
COORDINATE baseline, width, height;
{
    UNSIGN16  rowlen;		/* Bytes/row */
    UNSIGN16  sigbytes;		/* Bytes/char cell row */
    UNSIGN16  uprows, dwrows;	/* Zero fill rows */
    UNSIGN16  lfbytes;		/* Zero fill columns */
    UNSIGN32  *p;		/* Pointer to raster image */
    UNSIGN16  i, j;		/* Loop variables */
    BYTE      byteout;		/* Output byte */

    uprows = height - baseline - chptr->yoffp;
    dwrows = height - uprows - chptr->hp;
    rowlen = (width + 7) >> 3;
    sigbytes = (chptr->wp + 7) >> 3;
    lfbytes = rowlen - sigbytes;
    p = chptr->rasters;

    FOUTCHAR(c);
    FOUTC(chptr->pxlw);
    /*FOUTC((BYTE)(chptr->pxlw - chptr->xoffp));*/
    FOUTC((BYTE) chptr->wp);
    /*FOUTC((BYTE)chptr->pxlw);*/
    FOUTC((BYTE)((-chptr->xoffp) & 0x00ff));

    for(i = 0; i < uprows; i++)	/* Zero fill top rows */
	for(j = 0; j < rowlen; j++)
		FOUTC('\0');
    for(i = 0; i < chptr->hp; i++) {	/* Significant rows */
	for(j = sigbytes; ; p++) {
		byteout = (BYTE)((*p) >> 24);
		FOUTC(byteout);
		if((--j) <= 0)
			break;
		byteout = (BYTE)((*p) >> 16);
		FOUTC(byteout);
		if((--j) <= 0)
			break;
		byteout = (BYTE)((*p) >> 8);
		FOUTC(byteout);
		if((--j) <= 0)
			break;
		byteout = (BYTE)(*p);
		FOUTC(byteout);
		if((--j) <= 0)
			break;
	}
	p++;
	for(j = 0; j < lfbytes; j++)	/* Zero bytes at left */
		FOUTC('\0');
    }
    for(i = 0; i < dwrows; i++)	/* Zero rows at bottom */
	for(j = 0; j < rowlen; j++)
		FOUTC('\0');
}

/*-->dumpfnts*/
/**********************************************************************/
/****************************** dumpfnts ******************************/
/**********************************************************************/

/* Dump entire font to output */

void
dumpfnts(tfptr)
struct font_entry *tfptr;
{
    struct char_entry *cfptr;		/* Character to be dumped */
    UNSIGN16 nloaded;			/* Number of loaded chars */
    UNSIGN16 c;                         /* Ascii code */
    COORDINATE  baseline, width, height;

    nloaded = tfptr->nloaded;
    /* Count loaded chars */
    if(!quiet)
	(void)fprintf(stderr, "Font (%d x %d + %d) x %d : %d \n",
	      tfptr->cell_w, tfptr->cell_h, tfptr->cell_d, nloaded,
	      tfptr->storage);

    if(!nloaded)
	return;
    baseline = tfptr->cell_d;
    width = tfptr->cell_w;
    height = tfptr->cell_h + baseline;
    FOUTCSI;
    (void)fprintf(savefp,
	"%d;%d;0;0;%d;2;%d;%d;0;0;%d;%d;%d;%d;1;1;0;%d.p",
	tfptr->storage,
	nloaded,
	GS_NUMBER(tfptr->font_number),
	(int)30000/width,
	(int)24*height,
	FONTNUMBER(tfptr->font_number),
	width,
	height,
	(baseline >= 0) ? MIN(baseline + 1, height) : -baseline,
	/*MAX(1,MIN(abs(baseline),height)),*/
	(baseline >= 0) ? 0 : 1);

    for(c = FIRSTPXLCHAR; c <= LASTPXLCHAR; c++)
    {
	cfptr = &(tfptr->ch[c]);
	if(cfptr->isloaded)
		dumpchar(c, cfptr, baseline, width, height);
    }
    return;
}

#include "dvifile.h"
#include "dviinit.h"
#include "dviterm.h"

/*-->eopact*/
/**********************************************************************/
/******************************* eopact *******************************/
/**********************************************************************/

void
eopact()			/* end of page action */
{
    if (copies > 1)
        SETCOPIES(copies);
    PAGEEJECT;
}

#include "f20open.h"
#include "fatal.h"

/*-->fillrect*/
/**********************************************************************/
/****************************** fillrect ******************************/
/**********************************************************************/

void
fillrect(x,y,width,height)
COORDINATE x,y,width,height;		/* lower left corner, size */

/***********************************************************************
With the  page origin  (0,0) at  the lower-left  corner, draw  a  filled
rectangle at (x,y).

For most  TeX  uses, rules  are  uncommon, and  little  optimization  is
possible.  However, for the LaTeX Bezier option, curves are simulated by
many small rules (typically  2 x 2)  separated by positioning  commands.

It is not possible to use relative, instead of absolute, moves in  these
sequences, without stacking rules for the whole page, because each  rule
is separated in  the DVI file  by push, pop,  and positioning  commands,
making  for  an  uncertain  correspondence  between  internal  (xcp,ycp)
pixel page coordinates and external device coordinates.

The last string y coordinate, str_ycp,  must be reset here to force  any
later setstr() to reissue new absolute positioning commands.
***********************************************************************/

{
    str_ycp = -1;		/* invalidate string y coordinate */

    /*
    Output a new  rule at  TeX position (x,y).   The device  coordinates
    will  be  changed  on  completion.   The  rule  origin  is  the  TeX
    convention of the lower-left corner.   The Canon A2 limits  vertical
    rule widths, and horizontal rule heights, to 9 dots, so we may  need
    to generate more than one rule request.
    */


    if (width > height)			/* horizontal rule */
    {
        for (; height > 0; (y += 9, height -= 9))
	    HRULE(x,y,width,(height > 9 ? 9 : height));
    }
    else				/* vertical rule */
    {
        for (; width > 0; (x += 9, width -= 9))
	    VRULE(x,y,(width > 9 ? 9 : width),height);

    }
}

#include "findpost.h"
#include "fixpos.h"
#include "fontfile.h"
#include "fontsub.h"
#include "getbytes.h"
#include "getfntdf.h"
#include "getpgtab.h"
#include "inch.h"
#include "initglob.h"

/*-->isnewbig*/
/**********************************************************************/
/****************************** isnewbig *******************************/
/**********************************************************************/

/* Is previously unknown character too big */

BOOLEAN
isnewbig(tfptr, tcptr, tsptr)
struct font_entry *tfptr;
struct char_entry *tcptr;
struct new_sizes *tsptr;
{
	COORDINATE width, height, ch, cd, chd;
	UNSIGN32 bmapsize, storage, storinc;

	if(((width = tcptr->wp) > size_limit) ||
	    ((height = tcptr->hp) > size_limit))
		return(TRUE);
	bmapsize = ((width + 7) >> 3) * height + LOADSEQSIZE;
	ch = tcptr->yoffp;
	cd = height - ch;
	if(ch < tfptr->cell_h)
		ch = tfptr->cell_h;
	ch = MAX(0, ch);
	if(cd < tfptr->cell_d)
		cd = tfptr->cell_d;
	if(cd < 0)
		cd = -MIN(cd + ch, -cd);
	if(width < tfptr->cell_w)
		width = tfptr->cell_w;
	if((chd = ch + cd) > size_limit)
		return(TRUE);

	/* Calculate new storage */

	storage = (width + 7) >> 3;
	storage *= chd;
	storage += 4;
	storage *= (tfptr->nloaded + 1);
	storinc = storage - tfptr->storage;
	if(storage > stor_fonts)
		return(TRUE);

	if(storinc > merit_fact * bmapsize)
		return(TRUE);

	if(storinc + stor_total > stor_limit)
		return(TRUE);


	tsptr->new_w = width;
	tsptr->new_h = ch;
	tsptr->new_d = cd;
	tsptr->stor_inc = storinc;
	return(FALSE);
}

/*-->loadbmap*/
/**********************************************************************/
/****************************** loadbmap ******************************/
/**********************************************************************/

void
loadbmap(c)			/* load big character as raster bitmap */
register BYTE c;
{
    register struct char_entry *tcharptr;  /* temporary char_entry pointer */
    register INT16 bytewidth;
    void (*charyy)();		/* subterfuge to get around PCC-20 bug */

    if (fontptr != pfontptr)
        (void)openfont(fontptr->n);
    if (fontfp == (FILE *)NULL)	/* do nothing if no font file */
	return;

    tcharptr = &(fontptr->ch[c]);

    moveto(hh - tcharptr->xoffp,YSIZE-vv+tcharptr->yoffp);

    STOREPOS;
    MOVETO(xcp,ycp);
    bytewidth = ((tcharptr->wp)+7)>>3;
    OUTBITMAP(bytewidth*(tcharptr->hp), bytewidth);

    /* Bug fix: PCC-20 otherwise jumps to charxx instead of *charxx */
    charyy = fontptr->charxx;
    (void)(*charyy)(c,outcrow);	/* load rasters into device */
    RESTOREPOS;
}

#include "loadchar.h"

/*-->loadcmap*/
/**********************************************************************/
/****************************** loadcmap ******************************/
/**********************************************************************/

/* Load character pixmap */

void
loadcmap(tfptr, c)
struct font_entry * tfptr;
BYTE c;
{
	struct new_sizes increm;

	(void)isnewbig(tfptr, &(tfptr->ch[c]), &increm);

	stor_total += increm.stor_inc;
	tfptr->nloaded++;
	tfptr->storage += increm.stor_inc;
	tfptr->cell_h = increm.new_h;
	tfptr->cell_d = increm.new_d;
	tfptr->cell_w = increm.new_w;

	loadchar(c);
}

#include "movedown.h"
#include "moveover.h"
#include "moveto.h"

/*-->newfont*/
/**********************************************************************/
/****************************** newfont *******************************/
/**********************************************************************/

void
newfont()
{
    struct char_entry *tchptr;
    register UNSIGN16 the_char;	/* loop index */
    INT16 j;			/* loop index */

    for (the_char = FIRSTPXLCHAR; the_char <= LASTPXLCHAR; the_char++) {
	tchptr = &(fontptr->ch[the_char]);
	tchptr->isloaded = FALSE;
	tchptr->isknown = FALSE;
	tchptr->istoobig = TRUE;
    }
    fontptr->cell_d = fontptr->cell_h = -10000;
    fontptr->cell_w = 0;
    fontptr->nloaded = 0;
    fontptr->storage = 0;

    for (j = 0; j < (INT16)font_count; ++j)
	if (font_table[j] == fontptr)	/* then font already known */
	    break;

    if (j >= (INT16)font_count)		/* new font */
    {
	fontptr->font_number = font_count;
	font_table[font_count++] = fontptr;
    }
}

#include "nosignex.h"
#include "openfont.h"
#include "option.h"

/*-->outcrow*/
/**********************************************************************/
/****************************** outcrow *******************************/
/**********************************************************************/

void
outcrow(c, yoff)
BYTE c;
UNSIGN16 yoff;
{
    UNSIGN16 bytes_per_row;
    register UNSIGN16 k;
    register UNSIGN32 *p;
    struct char_entry *tcharptr;
    register BYTE the_byte;

    tcharptr = &(fontptr->ch[c]);
    bytes_per_row = ((tcharptr->wp) + 7) >> 3;
    p = img_row;

    for(k = bytes_per_row; ; ++p) {
	the_byte = (BYTE)((*p) >> 24);
	OUTC(the_byte);
	if((--k) <= 0)
		break;
	the_byte = (BYTE)((*p) >> 16);
	OUTC(the_byte);
	if((--k) <= 0)
		break;
	the_byte = (BYTE)((*p) >> 8);
	OUTC(the_byte);
	if((--k) <= 0)
		break;
	the_byte = (BYTE)(*p);
	OUTC(the_byte);
	if((--k) <= 0)
		break;
    }
}

#include "outrow.h"
#include "prtpage.h"
#include "readfont.h"
#include "readgf.h"
#include "readpk.h"
#include "readpost.h"
#include "readpxl.h"
#include "reldfont.h"
#include "rulepxl.h"

/*-->setchar*/
/**********************************************************************/
/****************************** setchar *******************************/
/**********************************************************************/

void
setchar(c, update_h)
register BYTE c;
register BOOLEAN update_h;
{
    register struct char_entry *tcharptr;  /* temporary char_entry pointer */

    /* BIGCHAR() and ONPAGE() are used here and in setstr() */

/*#define BIGCHAR(t) ((t->cell_w > (COORDINATE)size_limit) ||\
    (t->cell_h > (COORDINATE)size_limit)) */

#define ONPAGE(t) (((hh + t->pxlw) <= XSIZE) \
    && (hh >= 0)\
    && (vv <= YSIZE)\
    && (vv >= 0))

    if (DBGOPT(DBG_SET_TEXT))
    {
	(void)fprintf(stderr,"setchar('");
	if (isprint(c))
	    (void)putc(c,stderr);
	else
	    (void)fprintf(stderr,"\\%03o",(int)c);
	(void)fprintf(stderr,"'<%d>) (hh,vv) = (%ld,%ld) font name <%s>",
	    (int)c, (long)hh, (long)vv, fontptr->n);
	NEWLINE(stderr);
    }

    tcharptr = &(fontptr->ch[c]);

    moveto(hh - tcharptr->xoffp,YSIZE-vv);
    if (ONPAGE(tcharptr))
    {				/* character fits entirely on page */
	/*if (font_switched && !bigchar(fontptr, c))
	{
	    SETCURRENTFONT(fontptr->font_number);
	    font_switched = FALSE;
	}
	*/

	if (VISIBLE(tcharptr))
	{
	    if (bigchar(fontptr, c))
	        loadbmap(c);
	    else
	    {
		if (!tcharptr->isloaded)
 		    loadcmap(fontptr, c);

		if (ycp != str_ycp)
		{
		    MOVETO(xcp,ycp);
		    str_ycp = ycp;
		}
		else
	            MOVEX(xcp);

		if(font_switched) {
		    SETCURRENTFONT(fontptr->font_number);
		    font_switched = FALSE;
		}
		OUTCHAR(c);
	    }
	}
    }
    else if (DBGOPT(DBG_OFF_PAGE) && !quiet)
    {				/* character is off page -- discard it */
	(void)fprintf(stderr,
	    "setchar(): Char %c [10#%3d 8#%03o 16#%02x] off page.",
	    isprint(c) ? c : '?',c,c,c);
	NEWLINE(stderr);
    }

    if (update_h)
    {
	h += (INT32)tcharptr->tfmw;
	hh += (COORDINATE)tcharptr->pxlw;
	hh = fixpos(hh-lmargin,h,conv) + lmargin;
    }
}

#include "setfntnm.h"
#include "setrule.h"

/*-->setstr*/
/**********************************************************************/
/******************************* setstr *******************************/
/**********************************************************************/

void
setstr(c)
register BYTE c;
{
    register struct char_entry *tcharptr;  /* temporary char_entry pointer */
    register BOOLEAN inside;
    INT32 h0,v0;		/* (h,v) at entry */
    COORDINATE hh0,vv0;		/* (hh,vv) at entry */
    COORDINATE hh_last;		/* hh before call to fixpos() */
    register UNSIGN16 k;	/* loop index */
    UNSIGN16 nstr;		/* number of characters in str[] */
    BYTE str[MAXSTR+1];		/* string accumulator */
    BOOLEAN truncated;		/* off-page string truncation flag */

    /*******************************************************************
    Set a sequence of characters in SETC_000 .. SETC_127 with a  minimal
    number of commands.  These sequences tend to occur in long clumps in
    a  DVI   file,  and   setting   them  together   whenever   possible
    substantially decreases  the overhead  and the  size of  the  output
    file.  A sequence can be set as a single string if

	* TeX and device coordinates of  each character agree, AND

	* each character is in the same font (this will always be true
	  in a sequence from a DVI file), AND

	* each character fits within the page boundaries, AND

	* each character definition is already loaded, AND

	* each character is from a visible font

    Whenever any of these conditions  does not hold, any string  already
    output is terminated, and a new one begun.

    Two output optimizations are implemented here.  First, up to  MAXSTR
    (in practice more  than enough) characters  are collected in  str[],
    and any  that  require downloading  are  handled.  Then  the  entire
    string is set at once, subject to the above limitations.  Second, by
    recording the vertical page coordinate, ycp, in the global  variable
    str_ycp (reset  in  prtpage()  at begin-page  processing),  it  is
    possible to avoid  outputting y coordinates  unnecessarily, since  a
    single line of  text will  generally result  in many  calls to  this
    function.
    *******************************************************************/

#define BEGINSTRING {inside = TRUE;\
    if (ycp != str_ycp)\
    {\
	MOVETO(xcp,ycp);\
	str_ycp = ycp;\
    }\
    else\
	MOVEX(xcp);}

#define ENDSTRING {inside = FALSE;}

#define OFF_PAGE (-1)	/* off-page coordinate value */

/*    if (font_switched)
    {
	SETCURRENTFONT(fontptr->font_number);
	font_switched = FALSE;
    } */

    inside = FALSE;
    truncated = FALSE;

    hh0 = hh;
    vv0 = vv;
    h0 = h;
    v0 = v;
    nstr = 0;
    while ((SETC_000 <= c) && (c <= SETC_127) && (nstr < MAXSTR))
    {			/* loop over character sequence */
	tcharptr = &(fontptr->ch[c]);

	moveto(hh ,YSIZE-vv);

	if (ONPAGE(tcharptr) && VISIBLE(tcharptr))
	{		/* character fits entirely on page and is visible */
	    if ((!tcharptr->isloaded) && (!bigchar(fontptr, c)))
		    loadcmap(fontptr, c);
	}
	/* update horizontal positions in TFM and pixel units */
	h += (INT32)tcharptr->tfmw;
	hh += (COORDINATE)tcharptr->pxlw;

	str[nstr++] = c;		/* save string character */

	c = (BYTE)nosignex(dvifp,(BYTE)1);
    }

    /* put back character which terminated the loop */
    (void)UNGETC((int)(c),dvifp);

    hh = hh0;			/* restore coordinates at entry */
    vv = vv0;
    h = h0;
    v = v0;

    if (DBGOPT(DBG_SET_TEXT))
    {
	(void)fprintf(stderr,"setstr(\"");
	for (k = 0; k < nstr; ++k)
	{
	    c = str[k];
	    if (isprint(c))
	        (void)putc(c,stderr);
	    else
	        (void)fprintf(stderr,"\\%03o",(int)c);
	}
	(void)fprintf(stderr,"\") (hh,vv) = (%ld,%ld) font name <%s>",
	    (long)hh, (long)vv, fontptr->n);
	NEWLINE(stderr);
    }

    for (k = 0; k < nstr; ++k)
    {			/* loop over character sequence */
	c = str[k];
	tcharptr = &(fontptr->ch[c]);
	moveto(hh ,YSIZE-vv);
	/*(void)fprintf(stderr, "%c:dx %d, dy %d, dw %d\n", c, tcharptr->xoffp,
		  tcharptr->yoffp, tcharptr->pxlw);*/

	if (ONPAGE(tcharptr) && VISIBLE(tcharptr))
	{		/* character fits entirely on page and is visible */
	    if (tcharptr->isloaded) /* character already downloaded */
	    {
		if (!inside)
		    BEGINSTRING;
		if(font_switched){
		    SETCURRENTFONT(fontptr->font_number);
		    font_switched = FALSE;
		}
		OUTCHAR(c);
	    }
	    else	/* character must be downloaded first */
	    {
		if (inside)
		    ENDSTRING;	    /* finish any open string */
		if (bigchar(fontptr, c))
		    loadbmap(c);
	    }
	}
	else		/* character does not fit on page -- output */
	{		/* current string and discard the character */
	    truncated = TRUE;
	    if (inside)
		ENDSTRING;
	}
	/* update horizontal positions in TFM and pixel units */
	h += (INT32)tcharptr->tfmw;
	hh += (COORDINATE)tcharptr->pxlw;
	hh_last = hh;
	hh = fixpos(hh-lmargin,h,conv) + lmargin;
	if (DBGOPT(DBG_POS_CHAR))
	{
	    (void)fprintf(stderr,
		"[%03o] xcp = %d\tycp = %d\thh = %d\thh_last = %d\n",
		c,xcp,ycp,hh,hh_last);
	}

	/* If fixpos() changed position, we need new string next time */
	if ((hh != hh_last) && inside)
	    ENDSTRING;
    }
    if (truncated && DBGOPT(DBG_OFF_PAGE) && !quiet)
    {
	(void)fprintf(stderr,"setstr(): Text [");
	for (k = 0; k < nstr; ++k)
	    (void)fprintf(stderr,isprint(str[k]) ? "%c" : "\\%03o",str[k]);
	(void)fprintf(stderr,"] truncated at page boundaries.");
	NEWLINE(stderr);
    }
    if (inside)		/* finish last string */
	ENDSTRING;
}

#include "signex.h"
#include "skgfspec.h"
#include "skipfont.h"
#include "skpkspec.h"
#include "special.h"
#include "strchr.h"
#include "strcm2.h"
#include "strid2.h"
#include "strrchr.h"
#include "tctos.h"
#include "usage.h"
#include "warning.h"