#include <u.h>#include <libc.h>#include <draw.h>#include <thread.h>#include <cursor.h>#include <mouse.h> voidmoveto(Mousectl *mc, Point pt){	_displaymoveto(mc->display, pt);	mc->m.xy = pt;} voidclosemouse(Mousectl *mc){	if(mc == nil)		return; /*	postnote(PNPROC, mc->pid, "kill"); */ 	do; while(nbrecv(mc->c, &mc->m) > 0);	chanfree(mc->c);	chanfree(mc->resizec);	free(mc);} intreadmouse(Mousectl *mc){	if(mc->display)		flushimage(mc->display, 1);	if(recv(mc->c, &mc->m) < 0){		fprint(2, "readmouse: %r\n");		return -1;	}	return 0;} staticvoid_ioproc(void *arg){	int one, resized;	Mouse m;	Mousectl *mc; 	mc = arg;	threadsetname("mouseproc");	memset(&m, 0, sizeof m);	one = 1;	resized = 0;	for(;;){		if(_displayrdmouse(mc->display, &m, &resized) < 0)			threadexitsall("mouse read error");		if(resized)			send(mc->resizec, &one);		send(mc->c, &m);		/*		 * mc->m is updated after send so it doesn't have wrong value if we block during send.		 * This means that programs should receive into mc->Mouse (see readmouse() above) if		 * they want full synchrony.		 */		mc->m = m;	}} Mousectl*initmouse(char *file, Image *i){	Mousectl *mc; 	mc = mallocz(sizeof(Mousectl), 1);	if(i)		mc->display = i->display;	mc->c = chancreate(sizeof(Mouse), 0);	chansetname(mc->c, "mousec");	mc->resizec = chancreate(sizeof(int), 2);	chansetname(mc->resizec, "resizec");	proccreate(_ioproc, mc, 32*1024);	return mc;} voidsetcursor(Mousectl *mc, Cursor *c){	_displaycursor(mc->display, c);}