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/* Copyright (c) 1988 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* sundev.c - standalone driver for Sunwindows. |
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* |
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* 10/3/88 |
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*/ |
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|
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#include <stdio.h> |
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#include <fcntl.h> |
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#include <suntool/sunview.h> |
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#include <suntool/canvas.h> |
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#include <suntool/tty.h> |
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|
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#include "color.h" |
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|
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#include "driver.h" |
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|
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short icon_image[] = { |
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#include "suntools.icon" |
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}; |
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DEFINE_ICON_FROM_IMAGE(sun_icon, icon_image); |
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|
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#ifndef TTYPROG |
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#define TTYPROG "sun.com" /* tty program */ |
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#endif |
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|
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#define GAMMA 2.0 /* exponent for color correction */ |
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|
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#define COMLH 3 /* number of command lines */ |
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|
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#define hashcolr(c) ((67*(c)[RED]+59*(c)[GRN]+71*(c)[BLU])%NCOLORS) |
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|
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int colres = 128; /* color resolution */ |
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COLR colrmap[256]; /* our color mapping */ |
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|
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#define NCOLORS 251 /* color table size (prime) */ |
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#define FIRSTCOLOR 2 /* first usable entry */ |
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|
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COLR colrtbl[NCOLORS]; /* our color table */ |
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|
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int sun_clear(), sun_paintr(), sun_getcur(), |
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sun_comout(), sun_comin(); |
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|
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int (*dev_func[NREQUESTS])() = { /* request handlers */ |
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sun_clear, sun_paintr, sun_getcur, |
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sun_comout, sun_comin |
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}; |
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|
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FILE *ttyin; |
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|
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Frame frame = 0; |
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Tty tty = 0; |
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Canvas canvas = 0; |
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|
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int xres = 0, yres = 0; |
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|
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char *progname; |
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|
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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extern Notify_value my_notice_destroy(); |
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char *ttyargv[4], arg1[10], arg2[10]; |
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int pd[2]; |
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int com; |
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|
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progname = argv[0]; |
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|
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frame = window_create(0, FRAME, |
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FRAME_LABEL, argc > 1 ? argv[1] : argv[0], |
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FRAME_ICON, &sun_icon, |
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WIN_X, 0, WIN_Y, 0, |
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0); |
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if (frame == 0) |
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quit("cannot create frame"); |
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if (pipe(pd) == -1) |
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quit("cannot create pipe"); |
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sprintf(arg1, "%d", getppid()); |
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sprintf(arg2, "%d", pd[1]); |
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ttyargv[0] = TTYPROG; |
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ttyargv[1] = arg1; |
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ttyargv[2] = arg2; |
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ttyargv[3] = NULL; |
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#ifdef BSD |
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fcntl(pd[0], F_SETFD, 1); |
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#endif |
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tty = window_create(frame, TTY, |
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TTY_ARGV, ttyargv, |
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WIN_ROWS, COMLH, |
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0); |
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if (tty == 0) |
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quit("cannot create tty subwindow"); |
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close(pd[1]); |
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if ((ttyin = fdopen(pd[0], "r")) == NULL) |
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quit("cannot open tty"); |
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canvas = window_create(frame, CANVAS, |
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CANVAS_RETAINED, FALSE, |
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WIN_INPUT_DESIGNEE, window_get(tty,WIN_DEVICE_NUMBER), |
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WIN_CONSUME_PICK_EVENTS, WIN_NO_EVENTS, |
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MS_LEFT, MS_MIDDLE, MS_RIGHT, 0, |
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0); |
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if (canvas == 0) |
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quit("cannot create canvas"); |
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if (getmap() < 0) |
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quit("not a color screen"); |
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window_set(canvas, CANVAS_RETAINED, TRUE, 0); |
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notify_interpose_destroy_func(frame, my_notice_destroy); |
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|
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while ((com = getc(stdin)) != EOF) { /* loop on requests */ |
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if (com >= NREQUESTS || dev_func[com] == NULL) |
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quit("invalid request"); |
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(*dev_func[com])(); |
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} |
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quit(NULL); |
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} |
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|
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|
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quit(msg) /* exit */ |
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char *msg; |
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{ |
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if (msg != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, msg); |
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kill(getppid(), SIGPIPE); |
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exit(1); |
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} |
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exit(0); |
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} |
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|
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|
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Notify_value |
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my_notice_destroy(fr, st) /* we're on our way out */ |
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Frame fr; |
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Destroy_status st; |
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{ |
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if (st != DESTROY_CHECKING) { |
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kill((int)window_get(tty, TTY_PID), SIGPIPE); |
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kill(getppid(), SIGPIPE); |
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} |
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return(notify_next_destroy_func(fr, st)); |
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} |
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|
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|
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sun_clear() /* clear our canvas */ |
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{ |
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register Pixwin *pw; |
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int nwidth, nheight; |
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|
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fread(&nwidth, sizeof(nwidth), 1, stdin); |
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fread(&nheight, sizeof(nheight), 1, stdin); |
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pw = canvas_pixwin(canvas); |
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if (nwidth != xres || nheight != yres) { |
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window_set(frame, WIN_SHOW, FALSE, 0); |
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window_set(canvas, CANVAS_AUTO_SHRINK, TRUE, |
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CANVAS_AUTO_EXPAND, TRUE, 0); |
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window_set(canvas, WIN_WIDTH, nwidth, WIN_HEIGHT, nheight, 0); |
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window_set(canvas, CANVAS_AUTO_SHRINK, FALSE, |
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CANVAS_AUTO_EXPAND, FALSE, 0); |
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window_fit(frame); |
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window_set(frame, WIN_SHOW, TRUE, 0); |
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notify_do_dispatch(); |
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xres = nwidth; |
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yres = nheight; |
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} |
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pw_writebackground(pw, 0, 0, xres, xres, PIX_SRC); |
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newmap(); |
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} |
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|
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|
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sun_paintr() /* fill a rectangle */ |
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{ |
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COLOR col; |
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int pval; |
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int xmin, ymin, xmax, ymax; |
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register Pixwin *pw; |
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|
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fread(col, sizeof(COLOR), 1, stdin); |
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fread(&xmin, sizeof(xmin), 1, stdin); |
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fread(&ymin, sizeof(ymin), 1, stdin); |
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fread(&xmax, sizeof(xmax), 1, stdin); |
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fread(&ymax, sizeof(ymax), 1, stdin); |
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pval = pixel(col); |
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pw = canvas_pixwin(canvas); |
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pw_rop(pw, xmin, yres-ymax, xmax-xmin, ymax-ymin, |
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PIX_SRC|PIX_COLOR(pval), NULL, 0, 0); |
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} |
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|
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|
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sun_comout() /* output a string to command line */ |
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{ |
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char out[256]; |
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|
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mygets(out, stdin); |
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ttyputs(out); |
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} |
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|
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|
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sun_comin() /* input a string from the command line */ |
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{ |
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char buf[256]; |
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/* echo characters */ |
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do { |
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mygets(buf, ttyin); |
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ttyputs(buf); |
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} while (buf[0]); |
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/* get result */ |
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mygets(buf, ttyin); |
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/* send reply */ |
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putc(COM_COMIN, stdout); |
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myputs(buf, stdout); |
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fflush(stdout); |
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} |
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|
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|
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sun_getcur() /* get cursor position */ |
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{ |
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Event ev; |
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int xpos, ypos; |
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int c; |
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|
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notify_no_dispatch(); /* allow read to block */ |
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window_set(canvas, WIN_CONSUME_KBD_EVENT, WIN_ASCII_EVENTS, 0); |
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again: |
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if (window_read_event(canvas, &ev) == -1) { |
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notify_perror(); |
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quit("window event read error"); |
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} |
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c = event_id(&ev); |
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switch (c) { |
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case MS_LEFT: |
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c = MB1; |
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break; |
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case MS_MIDDLE: |
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c = MB2; |
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break; |
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case MS_RIGHT: |
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c = MB3; |
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break; |
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default: |
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if (c < ASCII_FIRST || c > ASCII_LAST) |
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goto again; |
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break; |
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} |
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xpos = event_x(&ev); |
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ypos = yres-1 - event_y(&ev); |
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|
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window_set(canvas, WIN_IGNORE_KBD_EVENT, WIN_ASCII_EVENTS, 0); |
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notify_do_dispatch(); |
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putc(COM_GETCUR, stdout); |
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putc(c, stdout); |
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fwrite(&xpos, sizeof(xpos), 1, stdout); |
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fwrite(&ypos, sizeof(ypos), 1, stdout); |
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fflush(stdout); |
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} |
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|
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|
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mygets(s, fp) /* get string from file (with nul) */ |
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register char *s; |
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register FILE *fp; |
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{ |
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register int c; |
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|
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while ((c = getc(fp)) != EOF) |
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if ((*s++ = c) == '\0') |
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return; |
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*s = '\0'; |
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} |
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|
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|
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myputs(s, fp) /* put string to file (with nul) */ |
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register char *s; |
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register FILE *fp; |
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{ |
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do |
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putc(*s, fp); |
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while (*s++); |
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} |
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|
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|
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ttyputs(s) /* put string out to tty subwindow */ |
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register char *s; |
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{ |
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char buf[256]; |
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register char *cp; |
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|
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for (cp = buf; *s; s++) { |
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if (*s == '\n') |
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*cp++ = '\r'; |
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*cp++ = *s; |
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} |
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ttysw_output(tty, buf, cp-buf); |
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} |
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|
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|
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int |
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pixel(col) /* return pixel value for color */ |
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COLOR col; |
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{ |
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COLR clr; |
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register int ndx; |
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|
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mapcolor(clr, col); |
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while ((ndx = insertcolr(clr)) < 0) { |
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reduce_colres(); |
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mapcolor(clr, col); |
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} |
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return(ndx+FIRSTCOLOR); |
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} |
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|
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|
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int |
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insertcolr(clr) /* insert a new color */ |
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register COLR clr; |
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{ |
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int hval; |
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register int ndx, i; |
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|
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hval = ndx = hashcolr(clr); |
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|
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for (i = 1; i < NCOLORS; i++) { |
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if (colrtbl[ndx][EXP] == 0) { |
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colrtbl[ndx][RED] = clr[RED]; |
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colrtbl[ndx][GRN] = clr[GRN]; |
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colrtbl[ndx][BLU] = clr[BLU]; |
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colrtbl[ndx][EXP] = COLXS; |
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newcolr(ndx, clr); |
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return(ndx); |
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} |
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if ( colrtbl[ndx][RED] == clr[RED] && |
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colrtbl[ndx][GRN] == clr[GRN] && |
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colrtbl[ndx][BLU] == clr[BLU] ) |
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return(ndx); |
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ndx = (hval + i*i) % NCOLORS; |
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} |
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return(-1); |
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} |
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|
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|
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newcolr(ndx, clr) /* enter a color into hardware table */ |
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int ndx; |
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COLR clr; |
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{ |
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register Pixwin *pw; |
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|
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pw = canvas_pixwin(canvas); |
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pw_putcolormap(pw, ndx+FIRSTCOLOR, 1, |
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&clr[RED], &clr[GRN], &clr[BLU]); |
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pw = (Pixwin *)window_get(tty, WIN_PIXWIN); |
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pw_putcolormap(pw, ndx+FIRSTCOLOR, 1, |
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&clr[RED], &clr[GRN], &clr[BLU]); |
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} |
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|
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|
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reduce_colres() /* reduce the color resolution */ |
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{ |
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COLR oldtbl[NCOLORS]; |
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unsigned char pixmap[256]; |
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Pixwin *pw; |
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register int i, j; |
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register unsigned char *p; |
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|
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ttyputs("remapping colors...\n"); |
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bcopy(colrtbl, oldtbl, sizeof(oldtbl)); |
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colres >>= 1; |
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newmap(); |
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for (i = 0; i < 256; i++) |
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pixmap[i] = i; |
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for (i = 0; i < NCOLORS; i++) |
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if (oldtbl[i][EXP] != 0) { |
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for (j = 0; j < 3; j++) |
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oldtbl[i][j] = ((oldtbl[i][j]*colres/256) * |
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256 + 128)/colres; |
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pixmap[i+FIRSTCOLOR] = insertcolr(oldtbl[i])+FIRSTCOLOR; |
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} |
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pw = canvas_pixwin(canvas); |
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/* I probably should get my own memory */ |
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p = (unsigned char *)mpr_d(pw->pw_prretained)->md_image; |
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for (j = 0; j < yres; j++) { |
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for (i = 0; i < xres; i++) { |
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*p = pixmap[*p]; |
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p++; |
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} |
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if (xres&1) /* 16-bit boundaries */ |
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p++; |
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} |
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pw_rop(pw, 0, 0, xres, yres, PIX_SRC, pw->pw_prretained, 0, 0); |
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} |
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|
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|
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mapcolor(clr, col) /* map to our color space */ |
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COLR clr; |
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COLOR col; |
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{ |
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register int i, p; |
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/* compute color table value */ |
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for (i = 0; i < 3; i++) { |
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p = colval(col,i) * 255.0 + 0.5; |
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if (p < 0) p = 0; |
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else if (p > 255) p = 255; |
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clr[i] = colrmap[p][i]; |
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} |
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clr[EXP] = COLXS; |
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} |
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|
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|
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getmap() /* allocate color map segments */ |
| 413 |
{ |
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char cmsname[20]; |
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unsigned char red[256], green[256], blue[256]; |
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register Pixwin *pw; |
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register int i; |
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|
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for (i = 0; i < 256; i++) |
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red[i] = green[i] = blue[i] = 128; |
| 421 |
red[0] = green[0] = blue[0] = 255; |
| 422 |
red[1] = green[1] = blue[1] = 0; |
| 423 |
red[255] = green[255] = blue[255] = 0; |
| 424 |
red[254] = green[254] = blue[254] = 255; |
| 425 |
red[253] = green[253] = blue[253] = 0; |
| 426 |
/* name shared segment */ |
| 427 |
sprintf(cmsname, "rv%d", getpid()); |
| 428 |
/* set canvas */ |
| 429 |
pw = canvas_pixwin(canvas); |
| 430 |
if (pw->pw_pixrect->pr_depth < 8) |
| 431 |
return(-1); |
| 432 |
pw_setcmsname(pw, cmsname); |
| 433 |
pw_putcolormap(pw, 0, 256, red, green, blue); |
| 434 |
/* set tty subwindow */ |
| 435 |
pw = (Pixwin *)window_get(tty, WIN_PIXWIN); |
| 436 |
pw_setcmsname(pw, cmsname); |
| 437 |
pw_putcolormap(pw, 0, 256, red, green, blue); |
| 438 |
/* set frame */ |
| 439 |
pw = (Pixwin *)window_get(frame, WIN_PIXWIN); |
| 440 |
pw_setcmsname(pw, cmsname); |
| 441 |
pw_putcolormap(pw, 0, 256, red, green, blue); |
| 442 |
|
| 443 |
return(0); |
| 444 |
} |
| 445 |
|
| 446 |
|
| 447 |
newmap() /* initialize our color table */ |
| 448 |
{ |
| 449 |
double pow(); |
| 450 |
int val; |
| 451 |
register int i; |
| 452 |
|
| 453 |
for (i = 0; i < 256; i++) { |
| 454 |
val = pow(i/256.0, 1.0/GAMMA) * colres; |
| 455 |
val = (val*256 + 128) / colres; |
| 456 |
colrmap[i][RED] = colrmap[i][GRN] = colrmap[i][BLU] = val; |
| 457 |
colrmap[i][EXP] = COLXS; |
| 458 |
} |
| 459 |
for (i = 0; i < NCOLORS; i++) |
| 460 |
colrtbl[i][EXP] = 0; |
| 461 |
} |
