7 #ifndef __LIBCAMERA_SIGNAL_H__ 8 #define __LIBCAMERA_SIGNAL_H__ 12 #include <type_traits> 23 void disconnect(Object *
object);
26 using SlotList = std::list<BoundMethodBase *>;
28 void connect(BoundMethodBase *slot);
29 void disconnect(std::function<
bool(SlotList::iterator &)> match);
37 template<
typename... Args>
38 class Signal :
public SignalBase
47 template<typename T, typename R, typename std::enable_if_t<std::is_base_of<Object, T>::value> * =
nullptr>
48 void connect(T *obj, R (T::*func)(Args...),
51 Object *
object =
static_cast<Object *
>(obj);
52 SignalBase::connect(
new BoundMethodMember<T, R, Args...>(obj,
object, func, type));
55 template<typename T, typename R, typename std::enable_if_t<!std::is_base_of<Object, T>::value> * =
nullptr>
57 template<
typename T,
typename R>
59 void connect(T *obj, R (T::*func)(Args...))
61 SignalBase::connect(
new BoundMethodMember<T, R, Args...>(obj,
nullptr, func));
67 SignalBase::connect(
new BoundMethodStatic<R, Args...>(func));
72 SignalBase::disconnect([]([[maybe_unused]] SlotList::iterator &iter) {
80 SignalBase::disconnect([obj](SlotList::iterator &iter) {
81 return (*iter)->match(obj);
85 template<
typename T,
typename R>
88 SignalBase::disconnect([obj, func](SlotList::iterator &iter) {
89 BoundMethodArgs<R, Args...> *slot =
90 static_cast<BoundMethodArgs<R, Args...
> *>(*iter);
92 if (!slot->match(obj))
101 return static_cast<BoundMethodMember<T, R, Args...
> *>(slot)->match(func);
108 SignalBase::disconnect([func](SlotList::iterator &iter) {
109 BoundMethodArgs<R, Args...> *slot =
110 static_cast<BoundMethodArgs<R, Args...
> *>(*iter);
112 if (!slot->match(
nullptr))
115 return static_cast<BoundMethodStatic<R, Args...
> *>(slot)->match(func);
125 for (BoundMethodBase *slot : slots())
126 static_cast<BoundMethodArgs<
void, Args...
> *>(slot)->activate(args...);
void emit(Args... args)
Emit the signal and call all connected slots.
Definition: signal.h:119
ConnectionType
Connection type for asynchronous communication.
Definition: bound_method.h:19
void disconnect()
Disconnect the signal from all slots.
Definition: signal.h:70
void connect(T *obj, R(T::*func)(Args...))
Connect the signal to a member function slot.
Definition: signal.h:59
void disconnect(T *obj)
Disconnect the signal from all slots of the object.
Definition: signal.h:78
Top-level libcamera namespace.
Definition: bound_method.h:15
void disconnect(R(*func)(Args...))
Disconnect the signal from the slot static function func.
Definition: signal.h:106
void disconnect(T *obj, R(T::*func)(Args...))
Disconnect the signal from the object slot member function func.
Definition: signal.h:86
Base object to support automatic signal disconnection.
Method bind and invocation.
If the sender and the receiver live in the same thread, ConnectionTypeDirect is used. Otherwise ConnectionTypeQueued is used.
Definition: bound_method.h:20
void connect(R(*func)(Args...))
Connect the signal to a static function slot.
Definition: signal.h:65