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/* psresize.c
* Copyright (C) Angus J. C. Duggan 1991-1995
* See file LICENSE for details.
*
* alter pagesize of document
*
* Usage:
* psresize [-q] [-w<dim>] [-h<dim>] [-ppaper] [-W<dim>] [-H<dim>]
* [-Ppaper] [in [out]]
* -w<dim> sets the output paper width
* -h<dim> sets the output paper height
* -ppaper sets the output paper size (width and height) by name
* -W<dim> sets the input paper width
* -H<dim> sets the input paper height
* -Ppaper sets the input paper size (width and height) by name
*/
#include "psutil.h"
#include "psspec.h"
#include "pserror.h"
#include "patchlev.h"
char *program ;
int pages ;
int verbose ;
FILE *infile ;
FILE *outfile ;
char pagelabel[BUFSIZ] ;
int pageno ;
static void usage(void)
{
fprintf(stderr, "%s release %d patchlevel %d\n", program, RELEASE, PATCHLEVEL);
fprintf(stderr, "Copyright (C) Angus J. C. Duggan, 1991-1995. See file LICENSE for details.\n");
fprintf(stderr, "Usage: %s [-q] [-wwidth] [-hheight] [-ppaper] [-Wwidth] [-Hheight] [-Ppaper] [infile [outfile]]\n",
program);
fflush(stderr);
exit(1);
}
static void argerror(void)
{
message(FATAL, "bad dimension\n");
}
#define MIN(x,y) ((x) > (y) ? (y) : (x))
#define MAX(x,y) ((x) > (y) ? (x) : (y))
int main(int argc, char *argv[])
{
double scale, rscale; /* page scale */
double waste, rwaste; /* amount wasted */
double vshift, hshift; /* page centring shifts */
int rotate;
double inwidth = -1;
double inheight = -1;
Paper *paper;
PageSpec *specs;
#ifdef PAPER
if ( (paper = findpaper(PAPER)) != (Paper *)0 ) {
inwidth = width = (double)PaperWidth(paper);
inheight = height = (double)PaperHeight(paper);
}
#endif
vshift = hshift = 0;
rotate = 0;
infile = stdin;
outfile = stdout;
verbose = 1;
for (program = *argv++; --argc; argv++) {
if (argv[0][0] == '-') {
switch (argv[0][1]) {
case 'q': /* quiet */
verbose = 0;
break;
case 'w': /* page width */
width = singledimen(*argv+2, argerror, usage);
break;
case 'h': /* page height */
height = singledimen(*argv+2, argerror, usage);
break;
case 'p': /* paper type */
if ( (paper = findpaper(*argv+2)) != (Paper *)0 ) {
width = (double)PaperWidth(paper);
height = (double)PaperHeight(paper);
} else
message(FATAL, "paper size '%s' not recognised\n", *argv+2);
break;
case 'W': /* input page width */
inwidth = singledimen(*argv+2, argerror, usage);
break;
case 'H': /* input page height */
inheight = singledimen(*argv+2, argerror, usage);
break;
case 'P': /* input paper type */
if ( (paper = findpaper(*argv+2)) != (Paper *)0 ) {
inwidth = (double)PaperWidth(paper);
inheight = (double)PaperHeight(paper);
} else
message(FATAL, "paper size '%s' not recognised\n", *argv+2);
break;
case 'v': /* version */
default:
usage();
}
} else if (infile == stdin) {
if ((infile = fopen(*argv, OPEN_READ)) == NULL)
message(FATAL, "can't open input file %s\n", *argv);
} else if (outfile == stdout) {
if ((outfile = fopen(*argv, OPEN_WRITE)) == NULL)
message(FATAL, "can't open output file %s\n", *argv);
} else usage();
}
#if defined(MSDOS) || defined(WINNT) || defined(WIN32)
if ( infile == stdin ) {
int fd = fileno(stdin) ;
if ( setmode(fd, O_BINARY) < 0 )
message(FATAL, "can't open input file %s\n", argv[4]);
}
if ( outfile == stdout ) {
int fd = fileno(stdout) ;
if ( setmode(fd, O_BINARY) < 0 )
message(FATAL, "can't reset stdout to binary mode\n");
}
#endif
if ((infile=seekable(infile))==NULL)
message(FATAL, "can't seek input\n");
if (width <= 0 || height <= 0)
message(FATAL, "output page width and height must be set\n");
if (inwidth <= 0 || inheight <= 0)
message(FATAL, "input page width and height must be set\n");
/* try normal orientation first */
scale = MIN(width/inwidth, height/inheight);
waste = (width-scale*inwidth)*(width-scale*inwidth) +
(height-scale*inheight)*(height-scale*inheight);
hshift = (width - inwidth*scale)/2;
vshift = (height - inheight*scale)/2;
/* try rotated orientation */
rscale = MIN(height/inwidth, width/inheight);
rwaste = (height-scale*inwidth)*(height-scale*inwidth) +
(width-scale*inheight)*(width-scale*inheight);
if (rwaste < waste) {
double tmp = width;
scale = rscale;
hshift = (width + inheight*scale)/2;
vshift = (height - inwidth*scale)/2;
rotate = 1;
width = height;
height = tmp;
}
width /= scale;
height /= scale;
/* now construct specification list and run page rearrangement procedure */
specs = newspec();
if (rotate) {
specs->rotate = 90;
specs->flags |= ROTATE;
}
specs->pageno = 0;
specs->scale = scale;
specs->flags |= SCALE;
specs->xoff = hshift;
specs->yoff = vshift;
specs->flags |= OFFSET;
pstops(1, 1, 0, specs, 0.0); /* do page rearrangement */
return 0;
}
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