/*
* called at interrupt level to update the structure and
* awaken any waiting procs.
*/
void
mousetrack(int x, int y, int b, int msec)
{
int lastb;
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;
lastb = mouse.mstate.buttons;
mouse.mstate.xy = Pt(x, y);
mouse.mstate.buttons = b;
mouse.redraw = 1;
mouse.mstate.counter++;
mouse.mstate.msec = msec;
/*
* if the queue fills, we discard the entire queue and don't
* queue any more events until a reader polls the mouse.
*/
if(!mouse.qfull && lastb != b) { /* add to ring */
mouse.queue[mouse.wi] = mouse.mstate;
if(++mouse.wi == nelem(mouse.queue))
mouse.wi = 0;
if(mouse.wi == mouse.ri)
mouse.qfull = 1;
}
wakeup(&mouse.r);
drawactive(1);
}
/*
* called by any source of pointer data
*/
void
mousetrack(int b, int x, int y, int isdelta)
{
int lastb;
ulong msec;
Pointer e;
if(isdelta){
x += mouse.x;
y += mouse.y;
}
msec = TK2MS(MACHP(0)->ticks);
if(b && (mouse.b ^ b)&0x1f){
if(msec - mouse.msec < 300 && mouse.lastb == b
&& abs(mouse.x - x) < 12 && abs(mouse.y - y) < 12)
b |= 1<<8;
mouse.lastb = b & 0x1f;
mouse.msec = msec;
}
if(x == mouse.x && y == mouse.y && mouse.b == b)
return;
lastb = mouse.b;
mouse.x = x;
mouse.y = y;
mouse.b = b;
mouse.msec = msec;
if(!ptrq.full && lastb != b){
e = mouse.Pointer;
ptrq.clicks[ptrq.wr] = e;
if(++ptrq.wr >= Nevent)
ptrq.wr = 0;
if(ptrq.wr == ptrq.rd)
ptrq.full = 1;
}
mouse.modify = 1;
ptrq.put++;
wakeup(&ptrq.r);
drawactive(1);
/* TO DO: cursor update */
}
static void
blanktimer(void)
{
drawactive(0);
}