func areaKeyEvent(self C.id, e C.id, up bool, data unsafe.Pointer) C.BOOL {
var ke KeyEvent
keyCode := uintptr(C.keyCode(e))
ke, ok := fromKeycode(keyCode)
if !ok {
// no such key; modifiers by themselves are handled by -[self flagsChanged:]
return C.NO
}
// either ke.Key or ke.ExtKey will be set at this point
ke.Modifiers = parseModifiers(e)
ke.Up = up
return sendKeyEvent(self, ke, data)
}
//export areaView_flagsChanged
func areaView_flagsChanged(self C.id, e C.id, data unsafe.Pointer) C.BOOL {
var ke KeyEvent
// Mac OS X sends this event on both key up and key down.
// Fortunately -[e keyCode] IS valid here, so we can simply map from key code to Modifiers, get the value of [e modifierFlags], and check if the respective bit is set or not — that will give us the up/down state
keyCode := uintptr(C.keyCode(e))
mod, ok := keycodeModifiers[keyCode] // comma-ok form to avoid adding entries
if !ok { // unknown modifier; ignore
return C.NO
}
ke.Modifiers = parseModifiers(e)
ke.Up = (ke.Modifiers & mod) == 0
ke.Modifier = mod
// don't include the modifier in ke.Modifiers
ke.Modifiers &^= mod
return sendKeyEvent(self, ke, data)
}