static void
sendmouse(Mouse m)
{
m.buttons |= kbuttons;
mouse.m[mouse.wi] = m;
mouse.wi++;
if(mouse.wi == nelem(mouse.m))
mouse.wi = 0;
if(mouse.wi == mouse.ri){
mouse.stall = 1;
mouse.ri = 0;
mouse.wi = 1;
mouse.m[0] = m;
/* fprint(2, "mouse stall\n"); */
}
matchmouse();
}
void
mousetrack(int x, int y, int b, int ms)
{
Mouse *m;
if(x < mouserect.min.x)
x = mouserect.min.x;
if(x > mouserect.max.x)
x = mouserect.max.x;
if(y < mouserect.min.y)
y = mouserect.min.y;
if(y > mouserect.max.y)
y = mouserect.max.y;
zlock();
// If reader has stopped reading, don't bother.
// If reader is completely caught up, definitely queue.
// Otherwise, queue only button change events.
if(!mouse.stall)
if(mouse.wi == mouse.ri || mouse.last.buttons != b){
m = &mouse.last;
m->xy.x = x;
m->xy.y = y;
m->buttons = b;
m->msec = ms;
mouse.m[mouse.wi] = *m;
if(++mouse.wi == nelem(mouse.m))
mouse.wi = 0;
if(mouse.wi == mouse.ri){
mouse.stall = 1;
mouse.ri = 0;
mouse.wi = 1;
mouse.m[0] = *m;
}
matchmouse();
}
zunlock();
}
/*
* Handle a single wsysmsg.
* Might queue for later (kbd, mouse read)
*/
void
runmsg(Wsysmsg *m)
{
uchar buf[65536];
int n;
Memimage *i;
switch(m->type){
case Tinit:
memimageinit();
i = _xattach(m->label, m->winsize);
_initdisplaymemimage(i);
replymsg(m);
break;
case Trdmouse:
mousetags.t[mousetags.wi++] = m->tag;
if(mousetags.wi == nelem(mousetags.t))
mousetags.wi = 0;
if(mousetags.wi == mousetags.ri)
sysfatal("too many queued mouse reads");
/* fprint(2, "mouse unstall\n"); */
mouse.stall = 0;
matchmouse();
break;
case Trdkbd:
kbdtags.t[kbdtags.wi++] = m->tag;
if(kbdtags.wi == nelem(kbdtags.t))
kbdtags.wi = 0;
if(kbdtags.wi == kbdtags.ri)
sysfatal("too many queued keyboard reads");
kbd.stall = 0;
matchkbd();
break;
case Tmoveto:
_xmoveto(m->mouse.xy);
replymsg(m);
break;
case Tcursor:
if(m->arrowcursor)
_xsetcursor(nil);
else
_xsetcursor(&m->cursor);
replymsg(m);
break;
case Tbouncemouse:
_xbouncemouse(&m->mouse);
replymsg(m);
break;
case Tlabel:
_xsetlabel(m->label);
replymsg(m);
break;
case Trdsnarf:
m->snarf = _xgetsnarf();
replymsg(m);
free(m->snarf);
break;
case Twrsnarf:
_xputsnarf(m->snarf);
replymsg(m);
break;
case Trddraw:
n = m->count;
if(n > sizeof buf)
n = sizeof buf;
n = _drawmsgread(buf, n);
if(n < 0)
replyerror(m);
else{
m->count = n;
m->data = buf;
replymsg(m);
}
break;
case Twrdraw:
if(_drawmsgwrite(m->data, m->count) < 0)
replyerror(m);
else
replymsg(m);
break;
case Ttop:
_xtopwindow();
replymsg(m);
break;
case Tresize:
_xresizewindow(m->rect);
replymsg(m);
break;
}
}
