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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <cursor.h>
#include <mouse.h>
void
moveto(Mousectl *mc, Point pt)
{
_displaymoveto(mc->display, pt);
mc->m.xy = pt;
}
void
closemouse(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);
}
int
readmouse(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;
}
static
void
_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;
}
void
setcursor(Mousectl *mc, Cursor *c)
{
_displaycursor(mc->display, c, nil);
}
void
setcursor2(Mousectl *mc, Cursor *c, Cursor2 *c2)
{
_displaycursor(mc->display, c, c2);
}
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