mirror of
https://github.com/Xaymar/obs-StreamFX
synced 2024-11-11 06:15:05 +00:00
119 lines
2.6 KiB
C++
119 lines
2.6 KiB
C++
/*
|
|
* Modern effects for a modern Streamer
|
|
* Copyright (C) 2017 Michael Fabian Dirks
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#pragma once
|
|
#include <functional>
|
|
#include <list>
|
|
|
|
namespace util {
|
|
template<typename... _args>
|
|
class event {
|
|
std::list<std::function<void(_args...)>> listeners;
|
|
|
|
std::function<void()> listen_cb;
|
|
std::function<void()> silence_cb;
|
|
|
|
public /* functions */:
|
|
|
|
// Destructor
|
|
inline ~event()
|
|
{
|
|
this->clear();
|
|
}
|
|
|
|
// Add new listener.
|
|
inline void add(std::function<void(_args...)> listener)
|
|
{
|
|
if (listeners.size() == 0) {
|
|
if (listen_cb) {
|
|
listen_cb();
|
|
}
|
|
}
|
|
listeners.push_back(listener);
|
|
}
|
|
|
|
// Remove existing listener.
|
|
inline void remove(std::function<void(_args...)> listener)
|
|
{
|
|
listeners.remove(listener);
|
|
if (listeners.size() == 0) {
|
|
if (silence_cb) {
|
|
silence_cb();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check if empty / no listeners.
|
|
inline bool empty()
|
|
{
|
|
return listeners.empty();
|
|
}
|
|
|
|
// Remove all listeners.
|
|
inline void clear()
|
|
{
|
|
listeners.clear();
|
|
if (silence_cb) {
|
|
silence_cb();
|
|
}
|
|
}
|
|
|
|
public /* operators */:
|
|
// Call Listeners with arguments.
|
|
/// Not valid without the extra template.
|
|
template<typename... _largs>
|
|
inline void operator()(_args... args)
|
|
{
|
|
for (auto& l : listeners) {
|
|
l(args...);
|
|
}
|
|
}
|
|
|
|
// Convert to bool (true if not empty, false if empty).
|
|
inline operator bool()
|
|
{
|
|
return !this->empty();
|
|
}
|
|
|
|
// Add new listener.
|
|
inline event<_args...>& operator+=(std::function<void(_args...)> listener)
|
|
{
|
|
this->add(listener);
|
|
return *this;
|
|
}
|
|
|
|
// Remove existing listener.
|
|
inline event<_args...>& operator-=(std::function<void(_args...)> listener)
|
|
{
|
|
this->remove(listener);
|
|
return *this;
|
|
}
|
|
|
|
public /* events */:
|
|
void set_listen_callback(std::function<void()> cb)
|
|
{
|
|
this->listen_cb = cb;
|
|
}
|
|
|
|
void set_silence_callback(std::function<void()> cb)
|
|
{
|
|
this->silence_cb = cb;
|
|
}
|
|
};
|
|
} // namespace util
|