#include <u.h>#include <libc.h>#include <bio.h>#include <draw.h>#include <keyboard.h>#include <mouse.h>#include <thread.h> Channel	*wc;Image *i; typedef struct Rc Rc;struct Rc{	int	fd[2];	char	*cmd;	uint	nms;}; voidresize(Point p){	int fd; 	fd = open("/dev/wctl", OWRITE);	if(fd >= 0){		fprint(fd, "resize -dx %d -dy %d", p.x+4*2, p.y+4*2);		close(fd);	}} voidresizeto(Point p){	Point s; 	s = (Point){Dx(screen->r), Dy(screen->r)};	if(eqpt(p, s))		return;	resize(p);} voideresized(int new){	static int delaynew = 1; 	if(new && getwindow(display, Refnone) < 0)		sysfatal("imgloop: can't reattach to window\n");	if(new)		delaynew = 1;	if(i == nil)		return;	if(delaynew){		resizeto((Point){Dx(i->r), Dy(i->r)});		delaynew = 0;	}//	drawop(screen, r, image, nil, image->r.min, S);	draw(screen, screen->clipr, i, display->white, ZP);	flushimage(display, 1);} voidrunrcproc(void *v){	int nfd;	Rc *rc; 	rc = v;	nfd = open("/dev/null", ORDWR);	dup(nfd, 0);	dup(rc->fd[1], 1);	close(rc->fd[0]);	close(nfd);	procexecl(wc, "/bin/rc", "rc", "-c", rc->cmd, nil);} intrcproc(void *v){	Rc *rc;	Image *ni, *oi;	enum { Flags = RFFDG|RFPROC, }; 	rc = v;	threadsetname("imgloop %s", rc->cmd);	chancreate(sizeof(ulong), 1);	for(;;){		if(pipe(rc->fd) == -1)			sysfatal("pipe: %r");		if(procrfork(runrcproc, rc, 8*1024, Flags) == -1)			return -1;		close(rc->fd[1]);		ni = readimage(display, rc->fd[0], 0);		oi = i;		i = ni;		eresized(0);		freeimage(oi);		eresized(0);		close(rc->fd[0]);//		recvul(wc);		/* eat pid */		sleep(rc->nms);	}} voidresizedproc(void*){	char buf[128], *f[7];	int n, fd; 	threadsetname("resizeproc");	fd = open("/dev/wctl", OREAD);	for(;;){		n = read(fd, buf, sizeof buf-1);		if(n<4*12)			sysfatal("bad wctl: %r");		buf[n] = 0;		n = tokenize(buf, f, nelem(f));		if(n != 6)			sysfatal("bad wctl: %d fields", n);		if(strcmp(f[4], "current") == 0		&& strcmp(f[5], "visible") == 0)			eresized(1);	}} voidmouseproc(void *){	void *v;	Rune r;	Alt alts[4];	Keyboardctl *k;	Mousectl *m;	Mouse mc;	enum{Amouse, Akbd, Aresize, Aend}; 	m = initmouse("/dev/mouse", nil);	k = initkeyboard("/dev/cons"); 	memset(alts, 0, sizeof alts);	alts[Amouse].c = m->c;	alts[Amouse].v = &mc;	alts[Amouse].op = CHANRCV; 	alts[Akbd].c = k->c;	alts[Akbd].v = &r;	alts[Akbd].op = CHANRCV; 	alts[Aresize].c = m->resizec;	alts[Aresize].v = &v;	alts[Aresize].op = CHANRCV; 	alts[Aend].op = CHANEND; 	for(;;)		switch(alt(alts)){		default:			sysfatal("mouse!");		case Amouse:			break;		case Akbd:			switch(r){			case 'q':			case 0x7f:			case 0x04:				threadexitsall("");			}			break;		case Aresize:			break;		}} voidderror(Display*, char *s){	sysfatal("%s", s);} voidusage(void){	fprint(2, "usage: imgloop [-i framems] [-c cmd]\n");	threadexits("usage");} char*argstr(int argc, char **argv){	char *s, *p, *e;	int i, len; 	len = 0;	for(i = 0; i < argc; i++)		len += strlen(argv[i])+1;	s = malloc(len+1);	e = s + len+1;	p = s;	for(i = 0; i < argc; i++)		p = seprint(p, e, "%s ", argv[i]);	seprint(p, e, "\n"); 	if(p == s)		usage();	return s;} voidthreadmain(int argc, char **argv){	Rc rc; 	memset(&rc, 0, sizeof rc);	rc.nms = 2*60*1000;	rc.cmd = "radar -9"; 	ARGBEGIN{	default:		usage();	case 'i':		rc.nms = atoi(EARGF(usage()));		break;	case 'c':		rc.cmd = argstr(argc-1, argv+1);		goto done;	}ARGENDdone:	if(geninitdraw(nil, derror, "/lib/font/bit/cyberbit/mod14.font", "imgloop", nil, Refnone) == -1)		sysfatal("imgloop: can't open display: %r");	eresized(0);	proccreate(mouseproc, nil, 8192);	proccreate(resizedproc, nil, 8192);	rcproc(&rc);	threadexits("");}