/*
* Timers documentation:
* http://www.x.org/releases/X11R7.7/doc/xorg-server/Xserver-spec.html#id2536042
*
* This function indirectly may call itself recursively using timer to guarantee correct
* event delivery time. Ususally recursion ends after first recursive call.
*/
static CARD32 check_resolve_delayed(OsTimerPtr timer, CARD32 time, void *arg){
LocalDevicePtr local = arg;
struct MTouch *mt = local->private;
mstime_t delta_millis;
struct timeval delta;
// If it was to early to trigger delayed button, next timer will be set,
// but when called by timer such situation shouldn't take place.
switch (mtouch_delayed(mt)){
case 1:
if(mt->is_timer_installed != 1){
TimerCancel(mt->timer);
mt->is_timer_installed = 1;
timersub(&mt->gs.button_delayed_time, &mt->gs.time, &delta);
delta_millis = timertoms(&delta);
mt->timer = TimerSet(mt->timer, 0, delta_millis, check_resolve_delayed, local);
}
break;
case 2:
TimerCancel(mt->timer);
mt->is_timer_installed = 0;
handle_gestures(local, &mt->gs);
break;
case 3:
TimerCancel(mt->timer);
handle_gestures(local, &mt->gs);
mt->is_timer_installed = 2;
/* Install coasting timer */
coasting_delayed(mt->timer, -1, arg);
break;
case 0: break;
}
return 0;
}
/* called for each full received packet from the touchpad */
static void read_input(LocalDevicePtr local)
{
struct MTouch *mt = local->private;
while (mtouch_read(mt) > 0)
handle_gestures(local, &mt->gs);
if (mtouch_delayed(mt))
handle_gestures(local, &mt->gs);
}
void handle_usb_tablet_event (struct input_event *ev, int slot)
{
static int pen_inrange=0;
struct input_event new_ev;
new_ev.time = ev->time;
new_ev.type = ev->type;
new_ev.code = ev->code;
new_ev.value = ev->value;
struct tablet_scaling_params* t = &(tscale[slot]);
if (new_ev.type == EV_ABS)
{
if (!pen_inrange || (t->subtype!=SUBTYPE_MONOTOUCH))
{
if ((new_ev.code == ABS_X) || (new_ev.code == ABS_MT_POSITION_X))
new_ev.value = floor ( (new_ev.value - t->x_offs) * t->x_mult);
else if ((new_ev.code == ABS_Y) || (new_ev.code == ABS_MT_POSITION_Y))
new_ev.value = floor ( (new_ev.value - t->y_offs) * t->y_mult);
}
else
return;
}
else if (new_ev.type == EV_KEY)
{
/* Translate tablet codes into mouse codes, so it can be understood by drivers */
switch (new_ev.code)
{
case BTN_TOOL_PEN:
if (new_ev.value)
t->tool = BTN_LEFT;
pen_inrange=new_ev.value;
break;
case BTN_TOOL_FINGER:
if (new_ev.value)
t->tool = BTN_TOOL_FINGER;
break;
case BTN_TOOL_RUBBER:
if (new_ev.value)
t->tool = BTN_RIGHT;
pen_inrange=new_ev.value;
break;
case BTN_TOUCH:
if (t->tool == BTN_TOOL_FINGER)
{
if (new_ev.value)
{
if ((t->btnleft==0) && (!pen_inrange))
t->btnleft=btnleft_newlypressed;
break;
}
else if (t->btnleft)
{
new_ev.code=BTN_LEFT;
t->btnleft=0;
}
else
break;
}
else
new_ev.code = t->tool;
break;
case BTN_STYLUS:
new_ev.code = BTN_MIDDLE;
break;
}
}
if (new_ev.type == EV_SYN && new_ev.code == SYN_REPORT)
{
if (t->btnleft==btnleft_newlypressed)
{
t->btnleft=1;
check_and_inject_event (&new_ev, slot, HID_TYPE_TABLET);
set_and_inject_event(slot, &new_ev, EV_KEY, BTN_LEFT,1);
set_and_inject_event(slot, &new_ev, EV_SYN, SYN_REPORT,0);
return;
}
}
// Check for SYN_DROPPED. Indicates buffer overrun, so no point forwarding any more of packet until next syn_report
// Note that as any packets before the syn_dropped have already been transmitted, syn_dropped must still be transmitted
// so that client knows to ignore them.
if (new_ev.type == EV_SYN && new_ev.code == SYN_DROPPED)
{
ignore_events[slot] = 1;
info ("Ignoring events from event%d until next packet begins", slot);
}
else if (ignore_events[slot])
{
if (new_ev.type == EV_SYN && new_ev.code == SYN_REPORT)
{
ignore_events[slot] = 0;
info ("End of dropped packet from event%d", slot);
}
else
return;
}
if ((new_ev.type == EV_KEY) && (new_ev.code != ev->code))
{ /* we want to send bot the mouse version and pen version */
check_and_inject_event (ev, slot, HID_TYPE_TABLET);
}
if (handle_gestures (&new_ev))
check_and_inject_event (&new_ev, slot, HID_TYPE_TABLET);
}