1 |
greg |
2.24 |
/* Copyright (c) 1993 Regents of the University of California */ |
2 |
greg |
1.1 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ LBL"; |
5 |
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#endif |
6 |
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7 |
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/* |
8 |
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* x11image.c - driver for X-windows |
9 |
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* |
10 |
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* 3/1/90 |
11 |
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*/ |
12 |
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13 |
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/* |
14 |
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* Modified for X11 |
15 |
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* |
16 |
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* January 1990 |
17 |
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* |
18 |
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* Anat Grynberg and Greg Ward |
19 |
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*/ |
20 |
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21 |
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22 |
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#include "standard.h" |
23 |
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24 |
greg |
2.29 |
#include <signal.h> |
25 |
greg |
1.1 |
#include <X11/Xlib.h> |
26 |
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#include <X11/cursorfont.h> |
27 |
|
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#include <X11/Xutil.h> |
28 |
greg |
2.24 |
#include <X11/Xatom.h> |
29 |
greg |
1.1 |
|
30 |
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#include "color.h" |
31 |
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#include "view.h" |
32 |
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#include "x11raster.h" |
33 |
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#include "random.h" |
34 |
greg |
1.26 |
#include "resolu.h" |
35 |
greg |
1.1 |
|
36 |
greg |
2.28 |
#ifdef __alpha |
37 |
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#define int4 int |
38 |
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#endif |
39 |
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#ifndef int4 |
40 |
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#define int4 long |
41 |
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#endif |
42 |
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43 |
greg |
1.1 |
#define FONTNAME "8x13" /* text font we'll use */ |
44 |
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45 |
greg |
2.3 |
#define CTRL(c) ((c)-'@') |
46 |
greg |
1.1 |
|
47 |
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#define BORWIDTH 5 /* border width */ |
48 |
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49 |
greg |
1.18 |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
50 |
greg |
1.17 |
|
51 |
greg |
1.1 |
#define ourscreen DefaultScreen(thedisplay) |
52 |
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#define ourroot RootWindow(thedisplay,ourscreen) |
53 |
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54 |
greg |
1.5 |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
55 |
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56 |
greg |
1.2 |
#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
57 |
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58 |
greg |
1.1 |
double gamcor = 2.2; /* gamma correction */ |
59 |
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60 |
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int dither = 1; /* dither colors? */ |
61 |
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int fast = 0; /* keep picture in Pixmap? */ |
62 |
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63 |
greg |
2.6 |
char *dispname = NULL; /* our display name */ |
64 |
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65 |
greg |
1.1 |
Window wind = 0; /* our output window */ |
66 |
greg |
2.9 |
unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
67 |
greg |
1.2 |
int maxcolors = 0; /* maximum colors */ |
68 |
greg |
1.1 |
int greyscale = 0; /* in grey */ |
69 |
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70 |
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int scale = 0; /* scalefactor; power of two */ |
71 |
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72 |
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int xoff = 0; /* x image offset */ |
73 |
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int yoff = 0; /* y image offset */ |
74 |
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75 |
greg |
2.29 |
int parent = 0; /* number of children, -1 if child */ |
76 |
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77 |
greg |
1.1 |
VIEW ourview = STDVIEW; /* image view parameters */ |
78 |
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int gotview = 0; /* got parameters from file */ |
79 |
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|
80 |
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COLR *scanline; /* scan line buffer */ |
81 |
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82 |
greg |
1.26 |
RESOLU inpres; /* input resolution and ordering */ |
83 |
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int xmax, ymax; /* picture dimensions */ |
84 |
greg |
1.1 |
int width, height; /* window size */ |
85 |
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char *fname = NULL; /* input file name */ |
86 |
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FILE *fin = stdin; /* input file */ |
87 |
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long *scanpos = NULL; /* scan line positions in file */ |
88 |
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int cury = 0; /* current scan location */ |
89 |
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|
90 |
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double exposure = 1.0; /* exposure compensation used */ |
91 |
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92 |
greg |
1.14 |
int wrongformat = 0; /* input in another format? */ |
93 |
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94 |
greg |
2.6 |
GC ourgc; /* standard graphics context */ |
95 |
greg |
1.5 |
GC revgc; /* graphics context with GXinvert */ |
96 |
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|
97 |
greg |
2.6 |
int *ourrank; /* our visual class ranking */ |
98 |
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XVisualInfo ourvis; /* our visual */ |
99 |
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XRASTER *ourras; /* our stored image */ |
100 |
greg |
1.1 |
unsigned char *ourdata; /* our image data */ |
101 |
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102 |
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struct { |
103 |
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int xmin, ymin, xsiz, ysiz; |
104 |
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} box = {0, 0, 0, 0}; /* current box */ |
105 |
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106 |
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char *geometry = NULL; /* geometry specification */ |
107 |
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108 |
greg |
1.18 |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */ |
109 |
greg |
1.17 |
int iconwidth = 0, iconheight = 0; |
110 |
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111 |
greg |
1.1 |
char *progname; |
112 |
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113 |
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char errmsg[128]; |
114 |
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115 |
greg |
2.13 |
extern BYTE clrtab[256][3]; /* global color map */ |
116 |
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117 |
greg |
1.1 |
extern long ftell(); |
118 |
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119 |
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Display *thedisplay; |
120 |
greg |
2.24 |
Atom closedownAtom, wmProtocolsAtom; |
121 |
greg |
1.1 |
|
122 |
greg |
2.32 |
int sigrecv; |
123 |
greg |
2.14 |
|
124 |
greg |
2.32 |
int onsig() { sigrecv++; } |
125 |
greg |
2.29 |
|
126 |
greg |
2.32 |
|
127 |
greg |
1.1 |
main(argc, argv) |
128 |
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int argc; |
129 |
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char *argv[]; |
130 |
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{ |
131 |
greg |
2.10 |
extern char *getenv(); |
132 |
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char *gv; |
133 |
greg |
1.1 |
int headline(); |
134 |
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int i; |
135 |
greg |
2.29 |
int pid; |
136 |
greg |
1.1 |
|
137 |
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progname = argv[0]; |
138 |
greg |
2.10 |
if ((gv = getenv("GAMMA")) != NULL) |
139 |
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gamcor = atof(gv); |
140 |
greg |
1.1 |
|
141 |
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for (i = 1; i < argc; i++) |
142 |
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if (argv[i][0] == '-') |
143 |
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switch (argv[i][1]) { |
144 |
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case 'c': |
145 |
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maxcolors = atoi(argv[++i]); |
146 |
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break; |
147 |
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case 'b': |
148 |
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greyscale = !greyscale; |
149 |
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break; |
150 |
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case 'm': |
151 |
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maxcolors = 2; |
152 |
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break; |
153 |
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case 'd': |
154 |
greg |
2.7 |
if (argv[i][2] == 'i') |
155 |
greg |
2.6 |
dispname = argv[++i]; |
156 |
greg |
2.7 |
else |
157 |
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dither = !dither; |
158 |
greg |
1.1 |
break; |
159 |
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case 'f': |
160 |
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fast = !fast; |
161 |
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break; |
162 |
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case 'e': |
163 |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
164 |
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goto userr; |
165 |
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scale = atoi(argv[++i]); |
166 |
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break; |
167 |
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case 'g': |
168 |
greg |
2.7 |
if (argv[i][2] == 'e') |
169 |
greg |
1.1 |
geometry = argv[++i]; |
170 |
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else |
171 |
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gamcor = atof(argv[++i]); |
172 |
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break; |
173 |
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default: |
174 |
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goto userr; |
175 |
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} |
176 |
greg |
1.3 |
else if (argv[i][0] == '=') |
177 |
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geometry = argv[i]; |
178 |
greg |
1.1 |
else |
179 |
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break; |
180 |
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181 |
greg |
2.29 |
if (i > argc) |
182 |
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goto userr; |
183 |
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while (i < argc-1) { |
184 |
greg |
2.32 |
sigrecv = 0; |
185 |
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signal(SIGCONT, onsig); |
186 |
greg |
2.29 |
if ((pid=fork()) == 0) { /* a child for each picture */ |
187 |
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parent = -1; |
188 |
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break; |
189 |
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} |
190 |
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if (pid < 0) |
191 |
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quiterr("fork failed"); |
192 |
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parent++; |
193 |
greg |
2.32 |
while (!sigrecv) |
194 |
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pause(); /* wait for wake-up call */ |
195 |
greg |
2.29 |
i++; |
196 |
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} |
197 |
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if (i < argc) { /* open picture file */ |
198 |
greg |
1.1 |
fname = argv[i]; |
199 |
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fin = fopen(fname, "r"); |
200 |
greg |
2.33 |
if (fin == NULL) |
201 |
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quiterr("cannot open picture file"); |
202 |
greg |
2.29 |
} |
203 |
greg |
1.1 |
/* get header */ |
204 |
greg |
1.14 |
getheader(fin, headline, NULL); |
205 |
greg |
1.1 |
/* get picture dimensions */ |
206 |
greg |
1.26 |
if (wrongformat || !fgetsresolu(&inpres, fin)) |
207 |
greg |
1.14 |
quiterr("bad picture format"); |
208 |
greg |
1.26 |
xmax = scanlen(&inpres); |
209 |
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ymax = numscans(&inpres); |
210 |
greg |
1.1 |
/* set view parameters */ |
211 |
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if (gotview && setview(&ourview) != NULL) |
212 |
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gotview = 0; |
213 |
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if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
214 |
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quiterr("out of memory"); |
215 |
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|
216 |
greg |
2.24 |
init(argc, argv); /* get file and open window */ |
217 |
greg |
1.1 |
|
218 |
greg |
2.32 |
if (parent < 0) { |
219 |
greg |
2.29 |
kill(getppid(), SIGCONT); /* signal parent if child */ |
220 |
greg |
2.32 |
sigrecv--; |
221 |
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} |
222 |
greg |
1.1 |
for ( ; ; ) |
223 |
|
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getevent(); /* main loop */ |
224 |
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userr: |
225 |
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fprintf(stderr, |
226 |
greg |
2.29 |
"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e +/-stops] pic ..\n", |
227 |
greg |
1.1 |
progname); |
228 |
greg |
2.21 |
exit(1); |
229 |
greg |
1.1 |
} |
230 |
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231 |
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232 |
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headline(s) /* get relevant info from header */ |
233 |
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char *s; |
234 |
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{ |
235 |
greg |
1.14 |
char fmt[32]; |
236 |
greg |
1.1 |
|
237 |
greg |
1.2 |
if (isexpos(s)) |
238 |
|
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exposure *= exposval(s); |
239 |
greg |
1.14 |
else if (isformat(s)) { |
240 |
|
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formatval(fmt, s); |
241 |
|
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wrongformat = strcmp(fmt, COLRFMT); |
242 |
greg |
2.4 |
} else if (isview(s) && sscanview(&ourview, s) > 0) |
243 |
|
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gotview++; |
244 |
greg |
1.1 |
} |
245 |
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246 |
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247 |
greg |
2.24 |
init(argc, argv) /* get data and open window */ |
248 |
|
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int argc; |
249 |
|
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char **argv; |
250 |
greg |
1.1 |
{ |
251 |
greg |
1.4 |
XSetWindowAttributes ourwinattr; |
252 |
greg |
2.24 |
XClassHint xclshints; |
253 |
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XWMHints xwmhints; |
254 |
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XSizeHints xszhints; |
255 |
|
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XTextProperty windowName, iconName; |
256 |
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XGCValues xgcv; |
257 |
|
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char *name; |
258 |
greg |
2.6 |
register int i; |
259 |
greg |
1.1 |
|
260 |
|
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if (fname != NULL) { |
261 |
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scanpos = (long *)malloc(ymax*sizeof(long)); |
262 |
|
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if (scanpos == NULL) |
263 |
greg |
2.24 |
quiterr("out of memory"); |
264 |
greg |
1.1 |
for (i = 0; i < ymax; i++) |
265 |
|
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scanpos[i] = -1; |
266 |
greg |
2.24 |
name = fname; |
267 |
|
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} else |
268 |
|
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name = progname; |
269 |
|
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/* remove directory prefix from name */ |
270 |
|
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for (i = strlen(name); i-- > 0; ) |
271 |
|
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if (name[i] == '/') |
272 |
|
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break; |
273 |
|
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name += i+1; |
274 |
greg |
2.6 |
if ((thedisplay = XOpenDisplay(dispname)) == NULL) |
275 |
|
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quiterr("cannot open display"); |
276 |
|
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/* get best visual for default screen */ |
277 |
|
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getbestvis(); |
278 |
greg |
1.4 |
/* store image */ |
279 |
|
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getras(); |
280 |
greg |
2.20 |
/* get size and position */ |
281 |
greg |
2.24 |
xszhints.flags = 0; |
282 |
|
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xszhints.width = xmax; xszhints.height = ymax; |
283 |
greg |
2.20 |
if (geometry != NULL) { |
284 |
greg |
2.24 |
i = XParseGeometry(geometry, &xszhints.x, &xszhints.y, |
285 |
|
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(unsigned *)&xszhints.width, |
286 |
|
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(unsigned *)&xszhints.height); |
287 |
greg |
2.20 |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue)) |
288 |
greg |
2.24 |
xszhints.flags |= USSize; |
289 |
greg |
2.20 |
else |
290 |
greg |
2.24 |
xszhints.flags |= PSize; |
291 |
greg |
2.20 |
if ((i&(XValue|YValue)) == (XValue|YValue)) { |
292 |
greg |
2.24 |
xszhints.flags |= USPosition; |
293 |
greg |
2.20 |
if (i & XNegative) |
294 |
greg |
2.24 |
xszhints.x += DisplayWidth(thedisplay, |
295 |
|
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ourscreen)-1-xszhints.width-2*BORWIDTH; |
296 |
greg |
2.20 |
if (i & YNegative) |
297 |
greg |
2.24 |
xszhints.y += DisplayHeight(thedisplay, |
298 |
|
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ourscreen)-1-xszhints.height-2*BORWIDTH; |
299 |
greg |
2.20 |
} |
300 |
|
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} |
301 |
greg |
2.24 |
/* open window */ |
302 |
greg |
2.23 |
ourwinattr.border_pixel = ourwhite; |
303 |
|
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ourwinattr.background_pixel = ourblack; |
304 |
greg |
2.6 |
ourwinattr.colormap = XCreateColormap(thedisplay, ourroot, |
305 |
|
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ourvis.visual, AllocNone); |
306 |
greg |
2.24 |
ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask| |
307 |
|
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ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask; |
308 |
|
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ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross); |
309 |
|
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wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y, |
310 |
|
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xszhints.width, xszhints.height, BORWIDTH, |
311 |
|
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ourvis.depth, InputOutput, ourvis.visual, CWEventMask| |
312 |
|
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CWCursor|CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
313 |
greg |
1.4 |
if (wind == 0) |
314 |
greg |
2.6 |
quiterr("cannot create window"); |
315 |
greg |
1.5 |
width = xmax; |
316 |
|
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height = ymax; |
317 |
greg |
2.32 |
/* prepare graphics drawing context */ |
318 |
|
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if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0) |
319 |
|
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quiterr("cannot get font"); |
320 |
greg |
2.24 |
xgcv.foreground = ourblack; |
321 |
|
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xgcv.background = ourwhite; |
322 |
|
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ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
323 |
|
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GCFont, &xgcv); |
324 |
|
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xgcv.function = GXinvert; |
325 |
|
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revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
326 |
|
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GCFunction, &xgcv); |
327 |
|
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|
328 |
|
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/* set up the window manager */ |
329 |
|
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xwmhints.flags = InputHint|IconPixmapHint; |
330 |
|
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xwmhints.input = True; |
331 |
|
|
xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay, |
332 |
greg |
1.17 |
wind, icondata, iconwidth, iconheight); |
333 |
greg |
2.24 |
|
334 |
|
|
windowName.encoding = iconName.encoding = XA_STRING; |
335 |
|
|
windowName.format = iconName.format = 8; |
336 |
|
|
windowName.value = (u_char *)name; |
337 |
|
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windowName.nitems = strlen(windowName.value); |
338 |
|
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iconName.value = (u_char *)name; |
339 |
|
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iconName.nitems = strlen(windowName.value); |
340 |
|
|
|
341 |
|
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xclshints.res_name = NULL; |
342 |
|
|
xclshints.res_class = "Ximage"; |
343 |
|
|
XSetWMProperties(thedisplay, wind, &windowName, &iconName, |
344 |
|
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argv, argc, &xszhints, &xwmhints, &xclshints); |
345 |
|
|
closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False); |
346 |
|
|
wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False); |
347 |
|
|
XSetWMProtocols(thedisplay, wind, &closedownAtom, 1); |
348 |
|
|
|
349 |
greg |
1.1 |
XMapWindow(thedisplay, wind); |
350 |
|
|
return; |
351 |
|
|
} /* end of init */ |
352 |
|
|
|
353 |
|
|
|
354 |
|
|
quiterr(err) /* print message and exit */ |
355 |
|
|
char *err; |
356 |
|
|
{ |
357 |
greg |
2.31 |
register int es; |
358 |
|
|
int cs; |
359 |
|
|
|
360 |
|
|
if (es = err != NULL) |
361 |
greg |
2.29 |
fprintf(stderr, "%s: %s: %s\n", progname, |
362 |
|
|
fname==NULL?"<stdin>":fname, err); |
363 |
greg |
2.31 |
if (parent > 0 & wind != 0) { |
364 |
greg |
2.29 |
XDestroyWindow(thedisplay, wind); |
365 |
|
|
XFlush(thedisplay); |
366 |
greg |
2.32 |
} else if (parent < 0 & sigrecv == 0) |
367 |
|
|
kill(getppid(), SIGCONT); |
368 |
greg |
2.31 |
while (parent > 0 && wait(&cs) != -1) { /* wait for any children */ |
369 |
|
|
if (es == 0) |
370 |
|
|
es = cs>>8 & 0xff; |
371 |
greg |
2.29 |
parent--; |
372 |
greg |
2.31 |
} |
373 |
|
|
exit(es); |
374 |
greg |
1.1 |
} |
375 |
|
|
|
376 |
|
|
|
377 |
greg |
2.6 |
static int |
378 |
|
|
viscmp(v1,v2) /* compare visual to see which is better, descending */ |
379 |
|
|
register XVisualInfo *v1, *v2; |
380 |
|
|
{ |
381 |
|
|
int bad1 = 0, bad2 = 0; |
382 |
|
|
register int *rp; |
383 |
|
|
|
384 |
|
|
if (v1->class == v2->class) { |
385 |
|
|
if (v1->class == TrueColor || v1->class == DirectColor) { |
386 |
|
|
/* prefer 24-bit to 32-bit */ |
387 |
|
|
if (v1->depth == 24 && v2->depth == 32) |
388 |
|
|
return(-1); |
389 |
|
|
if (v1->depth == 32 && v2->depth == 24) |
390 |
|
|
return(1); |
391 |
|
|
return(0); |
392 |
|
|
} |
393 |
|
|
/* don't be too greedy */ |
394 |
|
|
if (maxcolors <= 1<<v1->depth && maxcolors <= 1<<v2->depth) |
395 |
|
|
return(v1->depth - v2->depth); |
396 |
|
|
return(v2->depth - v1->depth); |
397 |
|
|
} |
398 |
|
|
/* prefer Pseudo when < 24-bit */ |
399 |
|
|
if ((v1->class == TrueColor || v1->class == DirectColor) && |
400 |
|
|
v1->depth < 24) |
401 |
|
|
bad1 = 1; |
402 |
|
|
if ((v2->class == TrueColor || v2->class == DirectColor) && |
403 |
|
|
v2->depth < 24) |
404 |
|
|
bad2 = -1; |
405 |
|
|
if (bad1 | bad2) |
406 |
|
|
return(bad1+bad2); |
407 |
|
|
/* otherwise, use class ranking */ |
408 |
|
|
for (rp = ourrank; *rp != -1; rp++) { |
409 |
|
|
if (v1->class == *rp) |
410 |
|
|
return(-1); |
411 |
|
|
if (v2->class == *rp) |
412 |
|
|
return(1); |
413 |
|
|
} |
414 |
|
|
return(0); |
415 |
|
|
} |
416 |
|
|
|
417 |
|
|
|
418 |
|
|
getbestvis() /* get the best visual for this screen */ |
419 |
|
|
{ |
420 |
greg |
2.7 |
#ifdef DEBUG |
421 |
greg |
2.6 |
static char vistype[][12] = { |
422 |
|
|
"StaticGray", |
423 |
|
|
"GrayScale", |
424 |
|
|
"StaticColor", |
425 |
|
|
"PseudoColor", |
426 |
|
|
"TrueColor", |
427 |
|
|
"DirectColor" |
428 |
|
|
}; |
429 |
greg |
2.7 |
#endif |
430 |
greg |
2.6 |
static int rankings[3][6] = { |
431 |
|
|
{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
432 |
greg |
2.7 |
{PseudoColor,GrayScale,StaticGray,-1}, |
433 |
|
|
{PseudoColor,GrayScale,StaticGray,-1} |
434 |
greg |
2.6 |
}; |
435 |
|
|
XVisualInfo *xvi; |
436 |
|
|
int vismatched; |
437 |
|
|
register int i, j; |
438 |
|
|
|
439 |
|
|
if (greyscale) { |
440 |
|
|
ourrank = rankings[2]; |
441 |
|
|
if (maxcolors < 2) maxcolors = 256; |
442 |
|
|
} else if (maxcolors >= 2 && maxcolors <= 256) |
443 |
|
|
ourrank = rankings[1]; |
444 |
|
|
else { |
445 |
|
|
ourrank = rankings[0]; |
446 |
|
|
maxcolors = 256; |
447 |
|
|
} |
448 |
|
|
/* find best visual */ |
449 |
|
|
ourvis.screen = ourscreen; |
450 |
|
|
xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
451 |
|
|
if (xvi == NULL) |
452 |
|
|
quiterr("no visuals for this screen!"); |
453 |
greg |
2.7 |
#ifdef DEBUG |
454 |
|
|
fprintf(stderr, "Supported visuals:\n"); |
455 |
|
|
for (i = 0; i < vismatched; i++) |
456 |
|
|
fprintf(stderr, "\ttype %s, depth %d\n", |
457 |
|
|
vistype[xvi[i].class], xvi[i].depth); |
458 |
|
|
#endif |
459 |
greg |
2.6 |
for (i = 0, j = 1; j < vismatched; j++) |
460 |
|
|
if (viscmp(&xvi[i],&xvi[j]) > 0) |
461 |
|
|
i = j; |
462 |
|
|
/* compare to least acceptable */ |
463 |
|
|
for (j = 0; ourrank[j++] != -1; ) |
464 |
|
|
; |
465 |
|
|
ourvis.class = ourrank[--j]; |
466 |
|
|
ourvis.depth = 1; |
467 |
|
|
if (viscmp(&xvi[i],&ourvis) > 0) |
468 |
|
|
quiterr("inadequate visuals on this screen"); |
469 |
|
|
/* OK, we'll use it */ |
470 |
|
|
copystruct(&ourvis, &xvi[i]); |
471 |
greg |
2.7 |
#ifdef DEBUG |
472 |
|
|
fprintf(stderr, "Selected visual type %s, depth %d\n", |
473 |
|
|
vistype[ourvis.class], ourvis.depth); |
474 |
|
|
#endif |
475 |
greg |
2.8 |
/* make appropriate adjustments */ |
476 |
greg |
2.6 |
if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
477 |
|
|
greyscale = 1; |
478 |
greg |
2.7 |
if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
479 |
|
|
maxcolors = ourvis.colormap_size; |
480 |
greg |
2.8 |
if (ourvis.class == StaticGray) { |
481 |
|
|
ourblack = 0; |
482 |
|
|
ourwhite = 255; |
483 |
|
|
} else if (ourvis.class == PseudoColor) { |
484 |
|
|
ourblack = BlackPixel(thedisplay,ourscreen); |
485 |
|
|
ourwhite = WhitePixel(thedisplay,ourscreen); |
486 |
greg |
2.9 |
if ((ourblack|ourwhite) & ~255L) { |
487 |
|
|
ourblack = 0; |
488 |
|
|
ourwhite = 1; |
489 |
|
|
} |
490 |
greg |
2.13 |
if (maxcolors > 4) |
491 |
|
|
maxcolors -= 2; |
492 |
greg |
2.8 |
} else { |
493 |
|
|
ourblack = 0; |
494 |
greg |
2.9 |
ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
495 |
greg |
2.8 |
} |
496 |
greg |
2.6 |
XFree((char *)xvi); |
497 |
|
|
} |
498 |
|
|
|
499 |
|
|
|
500 |
greg |
1.1 |
getras() /* get raster file */ |
501 |
|
|
{ |
502 |
|
|
XVisualInfo vinfo; |
503 |
|
|
|
504 |
|
|
if (maxcolors <= 2) { /* monochrome */ |
505 |
|
|
ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8)); |
506 |
|
|
if (ourdata == NULL) |
507 |
|
|
goto fail; |
508 |
greg |
2.6 |
ourras = make_raster(thedisplay, &ourvis, 1, ourdata, |
509 |
greg |
1.1 |
xmax, ymax, 8); |
510 |
|
|
if (ourras == NULL) |
511 |
|
|
goto fail; |
512 |
|
|
getmono(); |
513 |
greg |
2.13 |
} else if (ourvis.class == TrueColor | ourvis.class == DirectColor) { |
514 |
greg |
2.28 |
ourdata = (unsigned char *)malloc(sizeof(int4)*xmax*ymax); |
515 |
greg |
1.1 |
if (ourdata == NULL) |
516 |
|
|
goto fail; |
517 |
greg |
2.28 |
ourras = make_raster(thedisplay, &ourvis, sizeof(int4)*8, |
518 |
greg |
2.6 |
ourdata, xmax, ymax, 32); |
519 |
greg |
1.1 |
if (ourras == NULL) |
520 |
|
|
goto fail; |
521 |
|
|
getfull(); |
522 |
|
|
} else { |
523 |
|
|
ourdata = (unsigned char *)malloc(xmax*ymax); |
524 |
|
|
if (ourdata == NULL) |
525 |
|
|
goto fail; |
526 |
greg |
2.6 |
ourras = make_raster(thedisplay, &ourvis, 8, ourdata, |
527 |
greg |
1.1 |
xmax, ymax, 8); |
528 |
|
|
if (ourras == NULL) |
529 |
|
|
goto fail; |
530 |
greg |
2.13 |
if (greyscale | ourvis.class == StaticGray) |
531 |
greg |
2.7 |
getgrey(); |
532 |
greg |
2.13 |
else |
533 |
|
|
getmapped(); |
534 |
|
|
if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab)) |
535 |
|
|
goto fail; |
536 |
greg |
1.1 |
} |
537 |
greg |
2.13 |
return; |
538 |
greg |
1.1 |
fail: |
539 |
greg |
1.9 |
quiterr("could not create raster image"); |
540 |
greg |
1.1 |
} |
541 |
|
|
|
542 |
|
|
|
543 |
|
|
getevent() /* process the next event */ |
544 |
|
|
{ |
545 |
greg |
2.24 |
XEvent xev; |
546 |
greg |
1.1 |
|
547 |
greg |
2.24 |
XNextEvent(thedisplay, &xev); |
548 |
|
|
switch ((int)xev.type) { |
549 |
greg |
1.1 |
case KeyPress: |
550 |
greg |
2.24 |
docom(&xev.xkey); |
551 |
greg |
1.1 |
break; |
552 |
|
|
case ConfigureNotify: |
553 |
greg |
2.24 |
width = xev.xconfigure.width; |
554 |
|
|
height = xev.xconfigure.height; |
555 |
greg |
1.1 |
break; |
556 |
|
|
case MapNotify: |
557 |
|
|
map_rcolors(ourras, wind); |
558 |
|
|
if (fast) |
559 |
greg |
2.6 |
make_rpixmap(ourras, wind); |
560 |
greg |
1.1 |
break; |
561 |
|
|
case UnmapNotify: |
562 |
greg |
2.7 |
if (!fast) |
563 |
|
|
unmap_rcolors(ourras); |
564 |
greg |
1.1 |
break; |
565 |
|
|
case Expose: |
566 |
greg |
2.24 |
redraw(xev.xexpose.x, xev.xexpose.y, |
567 |
|
|
xev.xexpose.width, xev.xexpose.height); |
568 |
greg |
1.1 |
break; |
569 |
|
|
case ButtonPress: |
570 |
greg |
2.24 |
if (xev.xbutton.state & (ShiftMask|ControlMask)) |
571 |
|
|
moveimage(&xev.xbutton); |
572 |
|
|
else if (xev.xbutton.button == Button2) |
573 |
|
|
traceray(xev.xbutton.x, xev.xbutton.y); |
574 |
greg |
1.1 |
else |
575 |
greg |
2.24 |
getbox(&xev.xbutton); |
576 |
greg |
1.1 |
break; |
577 |
greg |
2.29 |
case ClientMessage: |
578 |
greg |
2.24 |
if ((xev.xclient.message_type == wmProtocolsAtom) && |
579 |
|
|
(xev.xclient.data.l[0] == closedownAtom)) |
580 |
|
|
quiterr(NULL); |
581 |
|
|
break; |
582 |
greg |
1.1 |
} |
583 |
|
|
} |
584 |
|
|
|
585 |
|
|
|
586 |
greg |
2.22 |
traceray(xpos, ypos) /* print ray corresponding to pixel */ |
587 |
|
|
int xpos, ypos; |
588 |
|
|
{ |
589 |
|
|
FLOAT hv[2]; |
590 |
|
|
FVECT rorg, rdir; |
591 |
|
|
|
592 |
|
|
if (!gotview) { /* no view, no can do */ |
593 |
|
|
XBell(thedisplay, 0); |
594 |
|
|
return(-1); |
595 |
|
|
} |
596 |
|
|
pix2loc(hv, &inpres, xpos-xoff, ypos-yoff); |
597 |
|
|
if (viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0) |
598 |
|
|
return(-1); |
599 |
|
|
printf("%e %e %e ", rorg[0], rorg[1], rorg[2]); |
600 |
|
|
printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]); |
601 |
|
|
fflush(stdout); |
602 |
|
|
return(0); |
603 |
|
|
} |
604 |
|
|
|
605 |
|
|
|
606 |
|
|
docom(ekey) /* execute command */ |
607 |
greg |
1.1 |
XKeyPressedEvent *ekey; |
608 |
|
|
{ |
609 |
|
|
char buf[80]; |
610 |
|
|
COLOR cval; |
611 |
|
|
XColor cvx; |
612 |
|
|
int com, n; |
613 |
|
|
double comp; |
614 |
greg |
1.26 |
FLOAT hv[2]; |
615 |
greg |
1.1 |
|
616 |
|
|
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL); |
617 |
|
|
if (n == 0) |
618 |
|
|
return(0); |
619 |
|
|
com = buf[0]; |
620 |
|
|
switch (com) { /* interpret command */ |
621 |
|
|
case 'q': |
622 |
greg |
2.22 |
case 'Q': |
623 |
greg |
2.3 |
case CTRL('D'): /* quit */ |
624 |
greg |
2.21 |
quiterr(NULL); |
625 |
greg |
1.1 |
case '\n': |
626 |
|
|
case '\r': |
627 |
|
|
case 'l': |
628 |
|
|
case 'c': /* value */ |
629 |
|
|
if (avgbox(cval) == -1) |
630 |
|
|
return(-1); |
631 |
|
|
switch (com) { |
632 |
|
|
case '\n': |
633 |
|
|
case '\r': /* radiance */ |
634 |
|
|
sprintf(buf, "%.3f", intens(cval)/exposure); |
635 |
|
|
break; |
636 |
|
|
case 'l': /* luminance */ |
637 |
greg |
1.16 |
sprintf(buf, "%.0fL", luminance(cval)/exposure); |
638 |
greg |
1.1 |
break; |
639 |
|
|
case 'c': /* color */ |
640 |
|
|
comp = pow(2.0, (double)scale); |
641 |
|
|
sprintf(buf, "(%.2f,%.2f,%.2f)", |
642 |
|
|
colval(cval,RED)*comp, |
643 |
|
|
colval(cval,GRN)*comp, |
644 |
|
|
colval(cval,BLU)*comp); |
645 |
|
|
break; |
646 |
|
|
} |
647 |
greg |
1.3 |
XDrawImageString(thedisplay, wind, ourgc, |
648 |
|
|
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
649 |
greg |
1.1 |
return(0); |
650 |
|
|
case 'i': /* identify (contour) */ |
651 |
|
|
if (ourras->pixels == NULL) |
652 |
|
|
return(-1); |
653 |
|
|
n = ourdata[ekey->x-xoff+xmax*(ekey->y-yoff)]; |
654 |
|
|
n = ourras->pmap[n]; |
655 |
|
|
cvx.pixel = ourras->cdefs[n].pixel; |
656 |
|
|
cvx.red = random() & 65535; |
657 |
|
|
cvx.green = random() & 65535; |
658 |
|
|
cvx.blue = random() & 65535; |
659 |
greg |
1.2 |
cvx.flags = DoRed|DoGreen|DoBlue; |
660 |
|
|
XStoreColor(thedisplay, ourras->cmap, &cvx); |
661 |
greg |
1.1 |
return(0); |
662 |
|
|
case 'p': /* position */ |
663 |
greg |
1.26 |
pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff); |
664 |
|
|
sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr), |
665 |
|
|
(int)(hv[1]*inpres.yr)); |
666 |
greg |
1.1 |
XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y, |
667 |
|
|
buf, strlen(buf)); |
668 |
|
|
return(0); |
669 |
|
|
case 't': /* trace */ |
670 |
greg |
2.22 |
return(traceray(ekey->x, ekey->y)); |
671 |
greg |
1.1 |
case '=': /* adjust exposure */ |
672 |
greg |
2.25 |
case '@': /* adaptation level */ |
673 |
greg |
1.1 |
if (avgbox(cval) == -1) |
674 |
|
|
return(-1); |
675 |
greg |
2.25 |
comp = com=='@' |
676 |
greg |
2.26 |
? 106./pow(1.219+pow(luminance(cval)/exposure,.4),2.5)/exposure |
677 |
greg |
2.25 |
: .5/bright(cval) ; |
678 |
|
|
comp = log(comp)/.69315 - scale; |
679 |
|
|
n = comp < 0 ? comp-.5 : comp+.5 ; /* round */ |
680 |
greg |
1.1 |
if (n == 0) |
681 |
|
|
return(0); |
682 |
|
|
scale_rcolors(ourras, pow(2.0, (double)n)); |
683 |
|
|
scale += n; |
684 |
|
|
sprintf(buf, "%+d", scale); |
685 |
greg |
1.3 |
XDrawImageString(thedisplay, wind, ourgc, |
686 |
|
|
box.xmin, box.ymin+box.ysiz, buf, strlen(buf)); |
687 |
greg |
1.1 |
XFlush(thedisplay); |
688 |
|
|
free(ourdata); |
689 |
|
|
free_raster(ourras); |
690 |
|
|
getras(); |
691 |
|
|
/* fall through */ |
692 |
greg |
2.3 |
case CTRL('R'): /* redraw */ |
693 |
|
|
case CTRL('L'): |
694 |
greg |
1.1 |
unmap_rcolors(ourras); |
695 |
|
|
XClearWindow(thedisplay, wind); |
696 |
|
|
map_rcolors(ourras, wind); |
697 |
|
|
if (fast) |
698 |
greg |
2.12 |
make_rpixmap(ourras, wind); |
699 |
greg |
1.1 |
redraw(0, 0, width, height); |
700 |
|
|
return(0); |
701 |
greg |
2.27 |
case 'f': /* turn on fast redraw */ |
702 |
|
|
fast = 1; |
703 |
|
|
make_rpixmap(ourras, wind); |
704 |
|
|
return(0); |
705 |
|
|
case 'F': /* turn off fast redraw */ |
706 |
|
|
fast = 0; |
707 |
|
|
free_rpixmap(ourras); |
708 |
|
|
return(0); |
709 |
greg |
2.19 |
case '0': /* recenter origin */ |
710 |
|
|
if (xoff == 0 & yoff == 0) |
711 |
|
|
return(0); |
712 |
|
|
xoff = yoff = 0; |
713 |
|
|
XClearWindow(thedisplay, wind); |
714 |
|
|
redraw(0, 0, width, height); |
715 |
|
|
return(0); |
716 |
greg |
1.1 |
case ' ': /* clear */ |
717 |
|
|
redraw(box.xmin, box.ymin, box.xsiz, box.ysiz); |
718 |
|
|
return(0); |
719 |
|
|
default: |
720 |
greg |
1.2 |
XBell(thedisplay, 0); |
721 |
greg |
1.1 |
return(-1); |
722 |
|
|
} |
723 |
|
|
} |
724 |
|
|
|
725 |
|
|
|
726 |
greg |
1.2 |
moveimage(ebut) /* shift the image */ |
727 |
|
|
XButtonPressedEvent *ebut; |
728 |
greg |
1.1 |
{ |
729 |
greg |
2.24 |
XEvent e; |
730 |
greg |
1.5 |
int mxo, myo; |
731 |
greg |
1.1 |
|
732 |
greg |
2.24 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
733 |
|
|
while (e.type == MotionNotify) { |
734 |
|
|
mxo = e.xmotion.x; |
735 |
|
|
myo = e.xmotion.y; |
736 |
greg |
1.5 |
revline(ebut->x, ebut->y, mxo, myo); |
737 |
|
|
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
738 |
|
|
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
739 |
greg |
2.24 |
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
740 |
greg |
1.5 |
revline(ebut->x, ebut->y, mxo, myo); |
741 |
|
|
revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y, |
742 |
|
|
xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax); |
743 |
greg |
1.3 |
} |
744 |
greg |
2.24 |
xoff += e.xbutton.x - ebut->x; |
745 |
|
|
yoff += e.xbutton.y - ebut->y; |
746 |
greg |
1.1 |
XClearWindow(thedisplay, wind); |
747 |
|
|
redraw(0, 0, width, height); |
748 |
|
|
} |
749 |
|
|
|
750 |
|
|
|
751 |
|
|
getbox(ebut) /* get new box */ |
752 |
|
|
XButtonPressedEvent *ebut; |
753 |
|
|
{ |
754 |
greg |
2.24 |
XEvent e; |
755 |
greg |
1.1 |
|
756 |
greg |
2.24 |
XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e); |
757 |
|
|
while (e.type == MotionNotify) { |
758 |
|
|
revbox(ebut->x, ebut->y, box.xmin = e.xmotion.x, box.ymin = e.xmotion.y); |
759 |
|
|
XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e); |
760 |
greg |
1.1 |
revbox(ebut->x, ebut->y, box.xmin, box.ymin); |
761 |
|
|
} |
762 |
greg |
2.24 |
box.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x); |
763 |
|
|
box.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y); |
764 |
greg |
1.1 |
if (box.xmin > ebut->x) { |
765 |
|
|
box.xsiz = box.xmin - ebut->x + 1; |
766 |
|
|
box.xmin = ebut->x; |
767 |
|
|
} else { |
768 |
|
|
box.xsiz = ebut->x - box.xmin + 1; |
769 |
|
|
} |
770 |
|
|
if (box.ymin > ebut->y) { |
771 |
|
|
box.ysiz = box.ymin - ebut->y + 1; |
772 |
|
|
box.ymin = ebut->y; |
773 |
|
|
} else { |
774 |
|
|
box.ysiz = ebut->y - box.ymin + 1; |
775 |
|
|
} |
776 |
|
|
} |
777 |
|
|
|
778 |
|
|
|
779 |
|
|
revbox(x0, y0, x1, y1) /* draw box with reversed lines */ |
780 |
|
|
int x0, y0, x1, y1; |
781 |
|
|
{ |
782 |
greg |
1.5 |
revline(x0, y0, x1, y0); |
783 |
|
|
revline(x0, y1, x1, y1); |
784 |
|
|
revline(x0, y0, x0, y1); |
785 |
|
|
revline(x1, y0, x1, y1); |
786 |
|
|
} |
787 |
greg |
1.1 |
|
788 |
|
|
|
789 |
|
|
avgbox(clr) /* average color over current box */ |
790 |
|
|
COLOR clr; |
791 |
|
|
{ |
792 |
greg |
1.25 |
static COLOR lc; |
793 |
|
|
static int ll, lr, lt, lb; |
794 |
greg |
1.1 |
int left, right, top, bottom; |
795 |
|
|
int y; |
796 |
|
|
double d; |
797 |
|
|
COLOR ctmp; |
798 |
|
|
register int x; |
799 |
|
|
|
800 |
|
|
setcolor(clr, 0.0, 0.0, 0.0); |
801 |
|
|
left = box.xmin - xoff; |
802 |
|
|
right = left + box.xsiz; |
803 |
|
|
if (left < 0) |
804 |
|
|
left = 0; |
805 |
|
|
if (right > xmax) |
806 |
|
|
right = xmax; |
807 |
|
|
if (left >= right) |
808 |
|
|
return(-1); |
809 |
|
|
top = box.ymin - yoff; |
810 |
|
|
bottom = top + box.ysiz; |
811 |
|
|
if (top < 0) |
812 |
|
|
top = 0; |
813 |
|
|
if (bottom > ymax) |
814 |
|
|
bottom = ymax; |
815 |
|
|
if (top >= bottom) |
816 |
|
|
return(-1); |
817 |
greg |
1.25 |
if (left == ll && right == lr && top == lt && bottom == lb) { |
818 |
|
|
copycolor(clr, lc); |
819 |
greg |
2.15 |
return(0); |
820 |
greg |
1.25 |
} |
821 |
greg |
1.1 |
for (y = top; y < bottom; y++) { |
822 |
|
|
if (getscan(y) == -1) |
823 |
|
|
return(-1); |
824 |
|
|
for (x = left; x < right; x++) { |
825 |
|
|
colr_color(ctmp, scanline[x]); |
826 |
|
|
addcolor(clr, ctmp); |
827 |
|
|
} |
828 |
|
|
} |
829 |
|
|
d = 1.0/((right-left)*(bottom-top)); |
830 |
|
|
scalecolor(clr, d); |
831 |
greg |
1.25 |
ll = left; lr = right; lt = top; lb = bottom; |
832 |
|
|
copycolor(lc, clr); |
833 |
greg |
1.1 |
return(0); |
834 |
|
|
} |
835 |
|
|
|
836 |
|
|
|
837 |
|
|
getmono() /* get monochrome data */ |
838 |
|
|
{ |
839 |
|
|
register unsigned char *dp; |
840 |
|
|
register int x, err; |
841 |
greg |
1.23 |
int y, errp; |
842 |
greg |
1.1 |
short *cerr; |
843 |
|
|
|
844 |
greg |
1.10 |
if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL) |
845 |
greg |
1.9 |
quiterr("out of memory in getmono"); |
846 |
greg |
1.1 |
dp = ourdata - 1; |
847 |
|
|
for (y = 0; y < ymax; y++) { |
848 |
greg |
2.15 |
getscan(y); |
849 |
greg |
2.16 |
add2icon(y, scanline); |
850 |
greg |
1.10 |
normcolrs(scanline, xmax, scale); |
851 |
greg |
1.1 |
err = 0; |
852 |
|
|
for (x = 0; x < xmax; x++) { |
853 |
|
|
if (!(x&7)) |
854 |
|
|
*++dp = 0; |
855 |
greg |
1.23 |
errp = err; |
856 |
greg |
1.10 |
err += normbright(scanline[x]) + cerr[x]; |
857 |
greg |
1.1 |
if (err > 127) |
858 |
|
|
err -= 255; |
859 |
|
|
else |
860 |
greg |
1.3 |
*dp |= 1<<(7-(x&07)); |
861 |
greg |
1.23 |
err /= 3; |
862 |
|
|
cerr[x] = err + errp; |
863 |
greg |
1.1 |
} |
864 |
|
|
} |
865 |
|
|
free((char *)cerr); |
866 |
|
|
} |
867 |
|
|
|
868 |
|
|
|
869 |
greg |
1.17 |
add2icon(y, scan) /* add a scanline to our icon data */ |
870 |
|
|
int y; |
871 |
|
|
COLR *scan; |
872 |
|
|
{ |
873 |
|
|
static short cerr[ICONSIZ]; |
874 |
greg |
1.20 |
static int ynext; |
875 |
|
|
static char *dp; |
876 |
greg |
2.17 |
COLR clr; |
877 |
greg |
1.17 |
register int err; |
878 |
greg |
1.20 |
register int x, ti; |
879 |
greg |
1.23 |
int errp; |
880 |
greg |
1.17 |
|
881 |
|
|
if (iconheight == 0) { /* initialize */ |
882 |
greg |
1.18 |
if (xmax <= ICONSIZ && ymax <= ICONSIZ) { |
883 |
greg |
1.17 |
iconwidth = xmax; |
884 |
|
|
iconheight = ymax; |
885 |
|
|
} else if (xmax > ymax) { |
886 |
|
|
iconwidth = ICONSIZ; |
887 |
|
|
iconheight = ICONSIZ*ymax/xmax; |
888 |
greg |
1.24 |
if (iconheight < 1) |
889 |
|
|
iconheight = 1; |
890 |
greg |
1.17 |
} else { |
891 |
|
|
iconwidth = ICONSIZ*xmax/ymax; |
892 |
greg |
1.24 |
if (iconwidth < 1) |
893 |
|
|
iconwidth = 1; |
894 |
greg |
1.17 |
iconheight = ICONSIZ; |
895 |
|
|
} |
896 |
greg |
1.20 |
ynext = 0; |
897 |
greg |
1.17 |
dp = icondata - 1; |
898 |
|
|
} |
899 |
greg |
1.20 |
if (y < ynext*ymax/iconheight) /* skip this one */ |
900 |
greg |
1.17 |
return; |
901 |
|
|
err = 0; |
902 |
|
|
for (x = 0; x < iconwidth; x++) { |
903 |
|
|
if (!(x&7)) |
904 |
|
|
*++dp = 0; |
905 |
greg |
1.23 |
errp = err; |
906 |
greg |
1.20 |
ti = x*xmax/iconwidth; |
907 |
greg |
2.17 |
copycolr(clr, scan[ti]); |
908 |
|
|
normcolrs(clr, 1, scale); |
909 |
|
|
err += normbright(clr) + cerr[x]; |
910 |
greg |
1.17 |
if (err > 127) |
911 |
|
|
err -= 255; |
912 |
|
|
else |
913 |
|
|
*dp |= 1<<(x&07); |
914 |
greg |
1.23 |
err /= 3; |
915 |
|
|
cerr[x] = err + errp; |
916 |
greg |
1.17 |
} |
917 |
greg |
1.20 |
ynext++; |
918 |
greg |
1.17 |
} |
919 |
|
|
|
920 |
|
|
|
921 |
greg |
1.1 |
getfull() /* get full (24-bit) data */ |
922 |
|
|
{ |
923 |
|
|
int y; |
924 |
greg |
2.28 |
register unsigned int4 *dp; |
925 |
greg |
1.10 |
register int x; |
926 |
|
|
/* set gamma correction */ |
927 |
|
|
setcolrgam(gamcor); |
928 |
|
|
/* read and convert file */ |
929 |
greg |
2.28 |
dp = (unsigned int4 *)ourdata; |
930 |
greg |
1.10 |
for (y = 0; y < ymax; y++) { |
931 |
greg |
2.15 |
getscan(y); |
932 |
greg |
2.16 |
add2icon(y, scanline); |
933 |
greg |
1.10 |
if (scale) |
934 |
|
|
shiftcolrs(scanline, xmax, scale); |
935 |
|
|
colrs_gambs(scanline, xmax); |
936 |
greg |
2.6 |
if (ourras->image->blue_mask & 1) |
937 |
|
|
for (x = 0; x < xmax; x++) |
938 |
|
|
*dp++ = scanline[x][RED] << 16 | |
939 |
|
|
scanline[x][GRN] << 8 | |
940 |
|
|
scanline[x][BLU] ; |
941 |
|
|
else |
942 |
|
|
for (x = 0; x < xmax; x++) |
943 |
|
|
*dp++ = scanline[x][RED] | |
944 |
|
|
scanline[x][GRN] << 8 | |
945 |
|
|
scanline[x][BLU] << 16 ; |
946 |
greg |
1.10 |
} |
947 |
greg |
1.1 |
} |
948 |
|
|
|
949 |
|
|
|
950 |
greg |
2.7 |
getgrey() /* get greyscale data */ |
951 |
|
|
{ |
952 |
|
|
int y; |
953 |
|
|
register unsigned char *dp; |
954 |
|
|
register int x; |
955 |
|
|
/* set gamma correction */ |
956 |
|
|
setcolrgam(gamcor); |
957 |
|
|
/* read and convert file */ |
958 |
|
|
dp = ourdata; |
959 |
|
|
for (y = 0; y < ymax; y++) { |
960 |
greg |
2.15 |
getscan(y); |
961 |
greg |
2.16 |
add2icon(y, scanline); |
962 |
greg |
2.7 |
if (scale) |
963 |
|
|
shiftcolrs(scanline, xmax, scale); |
964 |
greg |
2.18 |
for (x = 0; x < xmax; x++) |
965 |
|
|
scanline[x][GRN] = normbright(scanline[x]); |
966 |
greg |
2.7 |
colrs_gambs(scanline, xmax); |
967 |
greg |
2.13 |
if (maxcolors < 256) |
968 |
greg |
2.7 |
for (x = 0; x < xmax; x++) |
969 |
greg |
2.18 |
*dp++ = ((long)scanline[x][GRN] * |
970 |
|
|
maxcolors + maxcolors/2) >> 8; |
971 |
greg |
2.7 |
else |
972 |
|
|
for (x = 0; x < xmax; x++) |
973 |
greg |
2.18 |
*dp++ = scanline[x][GRN]; |
974 |
greg |
2.7 |
} |
975 |
greg |
2.13 |
for (x = 0; x < maxcolors; x++) |
976 |
|
|
clrtab[x][RED] = clrtab[x][GRN] = |
977 |
greg |
2.18 |
clrtab[x][BLU] = ((long)x*256 + 128)/maxcolors; |
978 |
greg |
2.7 |
} |
979 |
|
|
|
980 |
|
|
|
981 |
greg |
2.13 |
getmapped() /* get color-mapped data */ |
982 |
|
|
{ |
983 |
|
|
int y; |
984 |
greg |
2.30 |
/* make sure we can do it first */ |
985 |
|
|
if (fname == NULL) |
986 |
|
|
quiterr("cannot map colors from standard input"); |
987 |
greg |
2.13 |
/* set gamma correction */ |
988 |
|
|
setcolrgam(gamcor); |
989 |
|
|
/* make histogram */ |
990 |
|
|
new_histo(); |
991 |
|
|
for (y = 0; y < ymax; y++) { |
992 |
|
|
if (getscan(y) < 0) |
993 |
greg |
2.30 |
break; |
994 |
greg |
2.16 |
add2icon(y, scanline); |
995 |
greg |
2.13 |
if (scale) |
996 |
|
|
shiftcolrs(scanline, xmax, scale); |
997 |
|
|
colrs_gambs(scanline, xmax); |
998 |
|
|
cnt_colrs(scanline, xmax); |
999 |
|
|
} |
1000 |
|
|
/* map pixels */ |
1001 |
|
|
if (!new_clrtab(maxcolors)) |
1002 |
|
|
quiterr("cannot create color map"); |
1003 |
|
|
for (y = 0; y < ymax; y++) { |
1004 |
greg |
2.30 |
getscan(y); |
1005 |
greg |
2.13 |
if (scale) |
1006 |
|
|
shiftcolrs(scanline, xmax, scale); |
1007 |
|
|
colrs_gambs(scanline, xmax); |
1008 |
|
|
if (dither) |
1009 |
|
|
dith_colrs(ourdata+y*xmax, scanline, xmax); |
1010 |
|
|
else |
1011 |
|
|
map_colrs(ourdata+y*xmax, scanline, xmax); |
1012 |
|
|
} |
1013 |
|
|
} |
1014 |
|
|
|
1015 |
|
|
|
1016 |
greg |
1.1 |
scale_rcolors(xr, sf) /* scale color map */ |
1017 |
|
|
register XRASTER *xr; |
1018 |
|
|
double sf; |
1019 |
|
|
{ |
1020 |
|
|
register int i; |
1021 |
|
|
long maxv; |
1022 |
|
|
|
1023 |
|
|
if (xr->pixels == NULL) |
1024 |
|
|
return; |
1025 |
|
|
|
1026 |
|
|
sf = pow(sf, 1.0/gamcor); |
1027 |
|
|
maxv = 65535/sf; |
1028 |
|
|
|
1029 |
|
|
for (i = xr->ncolors; i--; ) { |
1030 |
|
|
xr->cdefs[i].red = xr->cdefs[i].red > maxv ? |
1031 |
|
|
65535 : |
1032 |
|
|
xr->cdefs[i].red * sf; |
1033 |
|
|
xr->cdefs[i].green = xr->cdefs[i].green > maxv ? |
1034 |
|
|
65535 : |
1035 |
|
|
xr->cdefs[i].green * sf; |
1036 |
|
|
xr->cdefs[i].blue = xr->cdefs[i].blue > maxv ? |
1037 |
|
|
65535 : |
1038 |
|
|
xr->cdefs[i].blue * sf; |
1039 |
|
|
} |
1040 |
|
|
XStoreColors(thedisplay, xr->cmap, xr->cdefs, xr->ncolors); |
1041 |
|
|
} |
1042 |
|
|
|
1043 |
|
|
|
1044 |
|
|
getscan(y) |
1045 |
|
|
int y; |
1046 |
|
|
{ |
1047 |
greg |
2.30 |
static int trunced = -1; /* truncated file? */ |
1048 |
|
|
skipit: |
1049 |
|
|
if (trunced >= 0 && y >= trunced) { |
1050 |
|
|
bzero(scanline, xmax*sizeof(COLR)); |
1051 |
|
|
return(-1); |
1052 |
|
|
} |
1053 |
greg |
1.1 |
if (y != cury) { |
1054 |
|
|
if (scanpos == NULL || scanpos[y] == -1) |
1055 |
|
|
return(-1); |
1056 |
|
|
if (fseek(fin, scanpos[y], 0) == -1) |
1057 |
greg |
1.9 |
quiterr("fseek error"); |
1058 |
greg |
1.1 |
cury = y; |
1059 |
greg |
2.11 |
} else if (scanpos != NULL && scanpos[y] == -1) |
1060 |
greg |
1.1 |
scanpos[y] = ftell(fin); |
1061 |
|
|
|
1062 |
greg |
2.30 |
if (freadcolrs(scanline, xmax, fin) < 0) { |
1063 |
|
|
fprintf(stderr, "%s: %s: unfinished picture\n", |
1064 |
|
|
progname, fname==NULL?"<stdin>":fname); |
1065 |
|
|
trunced = y; |
1066 |
|
|
goto skipit; |
1067 |
|
|
} |
1068 |
greg |
1.1 |
cury++; |
1069 |
|
|
return(0); |
1070 |
|
|
} |