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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "color.h" |
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#include "view.h" |
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#include "pic.h" |
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#include "x11raster.h" |
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#include "random.h" |
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#include "resolu.h" |
40 |
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#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */ |
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|
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#define ourscreen DefaultScreen(thedisplay) |
44 |
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#define ourblack BlackPixel(thedisplay,ourscreen) |
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#define ourwhite WhitePixel(thedisplay,ourscreen) |
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#define ourroot RootWindow(thedisplay,ourscreen) |
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|
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#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1) |
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char *dispname = NULL; /* our display name */ |
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|
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Window wind = 0; /* our output window */ |
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unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */ |
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Font fontid; /* our font */ |
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|
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int maxcolors = 0; /* maximum colors */ |
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|
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char errmsg[128]; |
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|
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extern BYTE clrtab[256][3]; /* global color map */ |
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|
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extern long ftell(); |
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|
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extern char *malloc(), *calloc(); |
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int argc; |
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char *argv[]; |
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{ |
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extern char *getenv(); |
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char *gv; |
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int headline(); |
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int i; |
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|
125 |
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progname = argv[0]; |
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if ((gv = getenv("GAMMA")) != NULL) |
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gamcor = atof(gv); |
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|
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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maxcolors = 2; |
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break; |
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case 'd': |
142 |
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if (argv[i][2] == 'i') { |
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if (argv[i][2] == 'i') |
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dispname = argv[++i]; |
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break; |
145 |
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} |
142 |
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dither = !dither; |
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else |
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dither = !dither; |
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break; |
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case 'f': |
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fast = !fast; |
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scale = atoi(argv[++i]); |
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break; |
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case 'g': |
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if (!strcmp(argv[i], "-geometry")) |
156 |
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if (argv[i][2] == 'e') |
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geometry = argv[++i]; |
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else |
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gamcor = atof(argv[++i]); |
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getevent(); /* main loop */ |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
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"Usage: %s [-display disp][-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n", |
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progname); |
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quit(1); |
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} |
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CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
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if (wind == 0) |
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quiterr("cannot create window"); |
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XFreeColormap(thedisplay, ourwinattr.colormap); |
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width = xmax; |
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height = ymax; |
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ourgc = XCreateGC(thedisplay, wind, 0, 0); |
252 |
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XSetState(thedisplay, ourgc, BlackPixel(thedisplay,ourscreen), |
249 |
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WhitePixel(thedisplay,ourscreen), GXcopy, AllPlanes); |
252 |
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XSetState(thedisplay, ourgc, ourblack, ourwhite, GXcopy, AllPlanes); |
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revgc = XCreateGC(thedisplay, wind, 0, 0); |
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XSetFunction(thedisplay, revgc, GXinvert); |
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fontid = XLoadFont(thedisplay, FONTNAME); |
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|
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getbestvis() /* get the best visual for this screen */ |
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{ |
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#ifdef DEBUG |
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static char vistype[][12] = { |
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"StaticGray", |
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"GrayScale", |
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"TrueColor", |
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"DirectColor" |
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}; |
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#endif |
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static int rankings[3][6] = { |
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{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1}, |
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{PseudoColor,GrayScale,-1}, |
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{PseudoColor,GrayScale,-1} |
380 |
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{PseudoColor,GrayScale,StaticGray,-1}, |
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{PseudoColor,GrayScale,StaticGray,-1} |
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}; |
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XVisualInfo *xvi; |
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int vismatched; |
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xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched); |
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if (xvi == NULL) |
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quiterr("no visuals for this screen!"); |
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for (i = 0; i < vismatched; i++) |
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fprintf(stderr, "Type %s, depth %d\n", vistype[xvi[i].class], xvi[i].depth); |
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#ifdef DEBUG |
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fprintf(stderr, "Supported visuals:\n"); |
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for (i = 0; i < vismatched; i++) |
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fprintf(stderr, "\ttype %s, depth %d\n", |
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vistype[xvi[i].class], xvi[i].depth); |
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#endif |
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for (i = 0, j = 1; j < vismatched; j++) |
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if (viscmp(&xvi[i],&xvi[j]) > 0) |
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i = j; |
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quiterr("inadequate visuals on this screen"); |
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/* OK, we'll use it */ |
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copystruct(&ourvis, &xvi[i]); |
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fprintf(stderr, "Selected visual type %s, depth %d\n", vistype[ourvis.class], |
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ourvis.depth); |
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#ifdef DEBUG |
420 |
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fprintf(stderr, "Selected visual type %s, depth %d\n", |
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vistype[ourvis.class], ourvis.depth); |
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#endif |
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/* make appropriate adjustments */ |
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if (ourvis.class == GrayScale || ourvis.class == StaticGray) |
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greyscale = 1; |
426 |
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if (1<<ourvis.depth < maxcolors) |
427 |
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maxcolors = 1<<ourvis.depth; |
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if (maxcolors > 4) |
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maxcolors -= 2; |
426 |
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if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors) |
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maxcolors = ourvis.colormap_size; |
428 |
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if (ourvis.class == StaticGray) { |
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ourblack = 0; |
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ourwhite = 255; |
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} else if (ourvis.class == PseudoColor) { |
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ourblack = BlackPixel(thedisplay,ourscreen); |
433 |
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ourwhite = WhitePixel(thedisplay,ourscreen); |
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if ((ourblack|ourwhite) & ~255L) { |
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ourblack = 0; |
436 |
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ourwhite = 1; |
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} |
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if (maxcolors > 4) |
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maxcolors -= 2; |
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} else { |
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ourblack = 0; |
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ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask; |
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} |
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XFree((char *)xvi); |
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} |
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|
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|
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getras() /* get raster file */ |
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{ |
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colormap ourmap; |
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XVisualInfo vinfo; |
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|
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if (maxcolors <= 2) { /* monochrome */ |
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if (ourras == NULL) |
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goto fail; |
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getmono(); |
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} else if (ourvis.class == TrueColor || ourvis.class == DirectColor) { |
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} else if (ourvis.class == TrueColor | ourvis.class == DirectColor) { |
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ourdata = (unsigned char *)malloc(4*xmax*ymax); |
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if (ourdata == NULL) |
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goto fail; |
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xmax, ymax, 8); |
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if (ourras == NULL) |
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goto fail; |
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if (greyscale) |
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biq(dither,maxcolors,1,ourmap); |
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if (greyscale | ourvis.class == StaticGray) |
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getgrey(); |
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else |
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ciq(dither,maxcolors,1,ourmap); |
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if (init_rcolors(ourras, ourmap[0], ourmap[1], ourmap[2]) == 0) |
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getmapped(); |
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if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab)) |
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goto fail; |
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} |
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return; |
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make_rpixmap(ourras, wind); |
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break; |
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case UnmapNotify: |
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unmap_rcolors(ourras); |
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if (!fast) |
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unmap_rcolors(ourras); |
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break; |
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case Expose: |
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redraw(e.e.x, e.e.y, e.e.width, e.e.height); |
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XClearWindow(thedisplay, wind); |
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map_rcolors(ourras, wind); |
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if (fast) |
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make_rpixmap(ourras); |
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make_rpixmap(ourras, wind); |
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redraw(0, 0, width, height); |
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return(0); |
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case ' ': /* clear */ |
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} |
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|
873 |
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getgrey() /* get greyscale data */ |
874 |
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{ |
875 |
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int y; |
876 |
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register unsigned char *dp; |
877 |
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register int x; |
878 |
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/* set gamma correction */ |
879 |
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setcolrgam(gamcor); |
880 |
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/* read and convert file */ |
881 |
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dp = ourdata; |
882 |
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for (y = 0; y < ymax; y++) { |
883 |
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if (getscan(y) < 0) |
884 |
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quiterr("seek error in getgrey"); |
885 |
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if (scale) |
886 |
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shiftcolrs(scanline, xmax, scale); |
887 |
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colrs_gambs(scanline, xmax); |
888 |
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add2icon(y, scanline); |
889 |
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if (maxcolors < 256) |
890 |
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for (x = 0; x < xmax; x++) |
891 |
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*dp++ = ((long)normbright(scanline[x]) * |
892 |
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maxcolors + 128) >> 8; |
893 |
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else |
894 |
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for (x = 0; x < xmax; x++) |
895 |
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*dp++ = normbright(scanline[x]); |
896 |
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} |
897 |
+ |
for (x = 0; x < maxcolors; x++) |
898 |
+ |
clrtab[x][RED] = clrtab[x][GRN] = |
899 |
+ |
clrtab[x][BLU] = (x*256+maxcolors/2)/maxcolors; |
900 |
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} |
901 |
+ |
|
902 |
+ |
|
903 |
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getmapped() /* get color-mapped data */ |
904 |
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{ |
905 |
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int y; |
906 |
+ |
/* set gamma correction */ |
907 |
+ |
setcolrgam(gamcor); |
908 |
+ |
/* make histogram */ |
909 |
+ |
new_histo(); |
910 |
+ |
for (y = 0; y < ymax; y++) { |
911 |
+ |
if (getscan(y) < 0) |
912 |
+ |
quiterr("seek error in getmapped"); |
913 |
+ |
if (scale) |
914 |
+ |
shiftcolrs(scanline, xmax, scale); |
915 |
+ |
colrs_gambs(scanline, xmax); |
916 |
+ |
add2icon(y, scanline); |
917 |
+ |
cnt_colrs(scanline, xmax); |
918 |
+ |
} |
919 |
+ |
/* map pixels */ |
920 |
+ |
if (!new_clrtab(maxcolors)) |
921 |
+ |
quiterr("cannot create color map"); |
922 |
+ |
for (y = 0; y < ymax; y++) { |
923 |
+ |
if (getscan(y) < 0) |
924 |
+ |
quiterr("seek error in getmapped"); |
925 |
+ |
if (scale) |
926 |
+ |
shiftcolrs(scanline, xmax, scale); |
927 |
+ |
colrs_gambs(scanline, xmax); |
928 |
+ |
if (dither) |
929 |
+ |
dith_colrs(ourdata+y*xmax, scanline, xmax); |
930 |
+ |
else |
931 |
+ |
map_colrs(ourdata+y*xmax, scanline, xmax); |
932 |
+ |
} |
933 |
+ |
} |
934 |
+ |
|
935 |
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|
936 |
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scale_rcolors(xr, sf) /* scale color map */ |
937 |
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register XRASTER *xr; |
938 |
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double sf; |
970 |
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if (fseek(fin, scanpos[y], 0) == -1) |
971 |
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quiterr("fseek error"); |
972 |
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cury = y; |
973 |
< |
} else if (scanpos != NULL) |
973 |
> |
} else if (scanpos != NULL && scanpos[y] == -1) |
974 |
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scanpos[y] = ftell(fin); |
975 |
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|
976 |
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if (freadcolrs(scanline, xmax, fin) < 0) |
978 |
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|
979 |
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cury++; |
980 |
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return(0); |
892 |
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} |
893 |
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|
894 |
– |
|
895 |
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picreadline3(y, l3) /* read in 3-byte scanline */ |
896 |
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int y; |
897 |
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register rgbpixel *l3; |
898 |
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{ |
899 |
– |
register int i; |
900 |
– |
/* read scanline */ |
901 |
– |
if (getscan(y) < 0) |
902 |
– |
quiterr("cannot seek for picreadline"); |
903 |
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/* convert scanline */ |
904 |
– |
normcolrs(scanline, xmax, scale); |
905 |
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add2icon(y, scanline); |
906 |
– |
for (i = 0; i < xmax; i++) { |
907 |
– |
l3[i].r = scanline[i][RED]; |
908 |
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l3[i].g = scanline[i][GRN]; |
909 |
– |
l3[i].b = scanline[i][BLU]; |
910 |
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} |
911 |
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} |
912 |
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|
913 |
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|
914 |
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picwriteline(y, l) /* add 8-bit scanline to image */ |
915 |
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int y; |
916 |
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pixel *l; |
917 |
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{ |
918 |
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bcopy((char *)l, (char *)ourdata+y*xmax, xmax); |
919 |
– |
} |
920 |
– |
|
921 |
– |
|
922 |
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picreadcm(map) /* do gamma correction */ |
923 |
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colormap map; |
924 |
– |
{ |
925 |
– |
extern double pow(); |
926 |
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register int i, val; |
927 |
– |
|
928 |
– |
for (i = 0; i < 256; i++) { |
929 |
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val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0; |
930 |
– |
map[0][i] = map[1][i] = map[2][i] = val; |
931 |
– |
} |
932 |
– |
} |
933 |
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|
934 |
– |
|
935 |
– |
picwritecm(map) /* handled elsewhere */ |
936 |
– |
colormap map; |
937 |
– |
{ |
938 |
– |
#ifdef DEBUG |
939 |
– |
register int i; |
940 |
– |
|
941 |
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for (i = 0; i < 256; i++) |
942 |
– |
printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]); |
943 |
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#endif |
981 |
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} |