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Let parameter detection look for widget and signal name as first unbound parameters

0.8
Bruno Van de Velde 2017-08-30 01:17:35 +02:00
parent 1988d34f4a
commit 06a55855a9
1 changed files with 51 additions and 10 deletions
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61
include/TGUI/Signal.hpp
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@ -633,6 +633,40 @@ namespace tgui
{ {
}; };
template <typename... UnboundArgs>
struct binder<TypeSet<std::shared_ptr<Widget>, std::string, UnboundArgs...>, TypeSet<>>
{
template <typename... Args, typename... BoundArgs>
static auto bind(Signal& signal, std::function<void(Args...)>&& handler, BoundArgs&&... args)
{
return bindImpl(std::index_sequence_for<UnboundArgs...>{}, signal, std::forward<std::function<void(Args...)>>(handler), std::forward<BoundArgs>(args)...);
}
private:
template <typename... Args, typename... BoundArgs, std::size_t... Indices>
static auto bindImpl(std::index_sequence<Indices...>, Signal& signal, std::function<void(Args...)>&& handler, BoundArgs&&... args)
{
if constexpr (sizeof...(UnboundArgs) == 0)
{
return [=](const std::shared_ptr<Widget>& widget, const std::string& signalName) {
std::invoke(handler, unbind(std::forward<BoundArgs>(args))..., widget, signalName);
};
}
else // There are unbound parameters that have to be checked at runtime
{
std::size_t offset = signal.validateTypes({typeid(UnboundArgs)...});
return [=](const std::shared_ptr<Widget>& widget, const std::string& signalName) {
std::invoke(handler,
unbind(std::forward<BoundArgs>(args))...,
widget,
signalName,
internal_signal::dereference<UnboundArgs>(internal_signal::parameters[offset + Indices])...);
};
}
}
};
template <typename... UnboundArgs> template <typename... UnboundArgs>
struct binder<TypeSet<UnboundArgs...>, TypeSet<>> struct binder<TypeSet<UnboundArgs...>, TypeSet<>>
{ {
@ -647,12 +681,19 @@ namespace tgui
template <typename... Args, typename... BoundArgs, std::size_t... Indices> template <typename... Args, typename... BoundArgs, std::size_t... Indices>
static auto bindImpl(std::index_sequence<Indices...>, Signal& signal, std::function<void(Args...)>&& handler, BoundArgs&&... args) static auto bindImpl(std::index_sequence<Indices...>, Signal& signal, std::function<void(Args...)>&& handler, BoundArgs&&... args)
{ {
const std::size_t offset = signal.validateTypes({typeid(UnboundArgs)...}); if constexpr (sizeof...(UnboundArgs) == 0)
return [=](){ {
std::invoke(handler, return [=](){ std::invoke(handler, unbind(std::forward<BoundArgs>(args))...); };
unbind(std::forward<BoundArgs>(args))..., }
internal_signal::dereference<std::decay_t<UnboundArgs>>(internal_signal::parameters[offset + Indices])...); else // There are unbound parameters that have to be checked at runtime
}; {
std::size_t offset = signal.validateTypes({typeid(UnboundArgs)...});
return [=](){
std::invoke(handler,
unbind(std::forward<BoundArgs>(args))...,
internal_signal::dereference<UnboundArgs>(internal_signal::parameters[offset + Indices])...);
};
}
} }
}; };
} }
@ -724,9 +765,9 @@ namespace tgui
unsigned int connect(std::string signalName, Func&& handler, const Args&... args) unsigned int connect(std::string signalName, Func&& handler, const Args&... args)
{ {
return getSignal(toLower(std::move(signalName))).connect( return getSignal(toLower(std::move(signalName))).connect(
[f=std::function<void(const Args&..., const std::shared_ptr<Widget>&, const std::string&)>(handler), args...] [f=std::function<void(const Args&..., const std::shared_ptr<Widget>&, const std::string&)>(handler), args...] (const std::shared_ptr<Widget>& w, const std::string& s) {
(const std::shared_ptr<Widget>& w, const std::string& s) f(args..., w, s);
{ f(args..., w, s); } }
); );
} }
@ -850,7 +891,7 @@ namespace tgui
else else
{ {
Signal& signal = getSignal(toLower(std::move(signalName))); Signal& signal = getSignal(toLower(std::move(signalName)));
return signal.connect(internal_signals::binder<internal_signals::TypeSet<Args...>, internal_signals::TypeSet<BoundArgs...>>::bind(signal, std::forward<std::function<void(Args...)>>(func), std::forward<BoundArgs>(args)...)); return signal.connect(internal_signals::binder<internal_signals::TypeSet<std::decay_t<Args>...>, internal_signals::TypeSet<BoundArgs...>>::bind(signal, std::forward<std::function<void(Args...)>>(func), std::forward<BoundArgs>(args)...));
} }
} }
#endif // TGUI_ENABLE_SIGNAL_EXTENSION #endif // TGUI_ENABLE_SIGNAL_EXTENSION