func processEvent(e *C.AInputEvent) {
switch C.AInputEvent_getType(e) {
case C.AINPUT_EVENT_TYPE_KEY:
log.Printf("TODO input event: key")
case C.AINPUT_EVENT_TYPE_MOTION:
// At most one of the events in this batch is an up or down event; get its index and change.
upDownIndex := C.size_t(C.AMotionEvent_getAction(e)&C.AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >> C.AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT
upDownChange := event.ChangeNone
switch C.AMotionEvent_getAction(e) & C.AMOTION_EVENT_ACTION_MASK {
case C.AMOTION_EVENT_ACTION_DOWN, C.AMOTION_EVENT_ACTION_POINTER_DOWN:
upDownChange = event.ChangeOn
case C.AMOTION_EVENT_ACTION_UP, C.AMOTION_EVENT_ACTION_POINTER_UP:
upDownChange = event.ChangeOff
}
for i, n := C.size_t(0), C.AMotionEvent_getPointerCount(e); i < n; i++ {
change := event.ChangeNone
if i == upDownIndex {
change = upDownChange
}
eventsIn <- event.Touch{
ID: event.TouchSequenceID(C.AMotionEvent_getPointerId(e, i)),
Change: change,
Loc: geom.Point{
X: geom.Pt(float32(C.AMotionEvent_getX(e, i)) / pixelsPerPt),
Y: geom.Pt(float32(C.AMotionEvent_getY(e, i)) / pixelsPerPt),
},
}
}
default:
log.Printf("unknown input event, type=%d", C.AInputEvent_getType(e))
}
}
//export sendTouch
func sendTouch(touch, change uintptr, x, y float32) {
id := -1
for i, val := range touchIDs {
if val == touch {
id = i
break
}
}
if id == -1 {
for i, val := range touchIDs {
if val == 0 {
touchIDs[i] = touch
id = i
break
}
}
if id == -1 {
panic("out of touchIDs")
}
}
c := event.Change(change)
if c == event.ChangeOff {
touchIDs[id] = 0
}
eventsIn <- event.Touch{
ID: event.TouchSequenceID(id),
Change: c,
Loc: geom.Point{
X: geom.Pt(x / pixelsPerPt),
Y: geom.Pt(y / pixelsPerPt),
},
}
}