1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/* epsffit.c
* Copyright (C) Angus J. C. Duggan 1991-1995
* See file LICENSE for details.
*
* fit epsf file into constrained size
* Usage:
* epsffit [-c] [-r] [-a] [-s] llx lly urx ury [infile [outfile]]
* -c centres the image in the bounding box given
* -r rotates the image by 90 degrees anti-clockwise
* -a alters the aspect ratio to fit the bounding box
* -s adds a showpage at the end of the image
*
* Added filename spec (from Larry Weissman) 5 Feb 93
* Accepts double %%BoundingBox input, outputs proper BB, 4 Jun 93. (I don't
* like this; developers should read the Big Red Book before writing code which
* outputs PostScript.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "pserror.h"
#include "patchlev.h"
#include "config.h"
#define MIN(x,y) ((x) > (y) ? (y) : (x))
#define MAX(x,y) ((x) > (y) ? (x) : (y))
char *program;
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 [-c] [-r] [-a] [-s] llx lly urx ury [infile [outfile]]\n",
program);
exit(1);
}
void main(int argc, char **argv)
{
int bbfound = 0; /* %%BoundingBox: found */
int urx, ury, llx, lly;
int furx, fury, fllx, flly;
int showpage = 0, centre = 0, rotate = 0, aspect = 0, maximise = 0;
char buf[BUFSIZ];
FILE *input;
FILE *output;
program = *argv++; argc--;
while (argc > 0 && argv[0][0] == '-') {
switch (argv[0][1]) {
case 'c': centre = 1; break;
case 's': showpage = 1; break;
case 'r': rotate = 1; break;
case 'a': aspect = 1; break;
case 'm': maximise = 1; break;
case 'v':
default: usage();
}
argc--;
argv++;
}
if (argc < 4 || argc > 6) usage();
fllx = atoi(argv[0]);
flly = atoi(argv[1]);
furx = atoi(argv[2]);
fury = atoi(argv[3]);
if (argc > 4) {
if(!(input = fopen(argv[4], OPEN_READ)))
message(FATAL, "can't open input file %s\n", argv[4]);
} else {
#if defined(MSDOS) || defined(WINNT)
int fd = fileno(stdin) ;
if ( setmode(fd, O_BINARY) < 0 )
message(FATAL, "can't reset stdin to binary mode\n");
#endif
input = stdin ;
}
if (argc > 5) {
if(!(output = fopen(argv[5], OPEN_WRITE)))
message(FATAL, "can't open output file %s\n", argv[5]);
} else {
#if defined(MSDOS) || defined(WINNT)
int fd = fileno(stdout) ;
if ( setmode(fd, O_BINARY) < 0 )
message(FATAL, "can't reset stdout to binary mode\n");
#endif
output = stdout ;
}
while (fgets(buf, BUFSIZ, input)) {
if (buf[0] == '%' && (buf[1] == '%' || buf[1] == '!')) {
/* still in comment section */
if (!strncmp(buf, "%%BoundingBox:", 14)) {
double illx, illy, iurx, iury; /* input bbox parameters */
if (sscanf(buf, "%%%%BoundingBox:%lf %lf %lf %lf\n",
&illx, &illy, &iurx, &iury) == 4) {
bbfound = 1;
llx = (int)illx; /* accept doubles, but convert to int */
lly = (int)illy;
urx = (int)(iurx+0.5);
ury = (int)(iury+0.5);
}
} else if (!strncmp(buf, "%%EndComments", 13)) {
strcpy(buf, "\n"); /* don't repeat %%EndComments */
break;
} else fputs(buf, output);
} else break;
}
if (bbfound) { /* put BB, followed by scale&translate */
int fwidth, fheight;
double xscale, yscale;
double xoffset = fllx, yoffset = flly;
double width = urx-llx, height = ury-lly;
if (maximise)
if ((width > height && fury-flly > furx-fllx) ||
(width < height && fury-flly < furx-fllx))
rotate = 1;
if (rotate) {
fwidth = fury - flly;
fheight = furx - fllx;
} else {
fwidth = furx - fllx;
fheight = fury - flly;
}
xscale = fwidth/width;
yscale = fheight/height;
if (!aspect) { /* preserve aspect ratio ? */
xscale = yscale = MIN(xscale,yscale);
}
width *= xscale; /* actual width and height after scaling */
height *= yscale;
if (centre) {
if (rotate) {
xoffset += (fheight - height)/2;
yoffset += (fwidth - width)/2;
} else {
xoffset += (fwidth - width)/2;
yoffset += (fheight - height)/2;
}
}
fprintf(output,
"%%%%BoundingBox: %d %d %d %d\n", (int)xoffset, (int)yoffset,
(int)(xoffset+(rotate ? height : width)),
(int)(yoffset+(rotate ? width : height)));
if (rotate) { /* compensate for original image shift */
xoffset += height + lly * yscale; /* displacement for rotation */
yoffset -= llx * xscale;
} else {
xoffset -= llx * xscale;
yoffset -= lly * yscale;
}
fputs("%%EndComments\n", output);
if (showpage)
fputs("save /showpage{}def /copypage{}def /erasepage{}def\n", output);
else
fputs("%%BeginProcSet: epsffit 1 0\n", output);
fputs("gsave\n", output);
fprintf(output, "%.3f %.3f translate\n", xoffset, yoffset);
if (rotate)
fputs("90 rotate\n", output);
fprintf(output, "%.3f %.3f scale\n", xscale, yscale);
if (!showpage)
fputs("%%EndProcSet\n", output);
}
do {
fputs(buf, output);
} while (fgets(buf, BUFSIZ, input));
if (bbfound) {
fputs("grestore\n", output);
if (showpage)
fputs("restore showpage\n", output); /* just in case */
} else
message(FATAL, "no %%%%BoundingBox:\n");
exit(0);
}
|
