119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
/*
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* Modern effects for a modern Streamer
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* Copyright (C) 2018 Michael Fabian Dirks
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef OBS_STREAM_EFFECTS_UTILITY_EVENT_CPP
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#define OBS_STREAM_EFFECTS_UTILITY_EVENT_CPP
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#pragma once
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#include <functional>
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#include <list>
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#include <map>
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#include <memory>
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#include <stdexcept>
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#include <string>
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namespace utility {
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typedef std::weak_ptr<void> lifeline_t;
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typedef std::map<std::string, void*> event_args_t;
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#define D_EVENT_FUNC_T void(std::weak_ptr<void>, event_args_t)
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typedef std::function<D_EVENT_FUNC_T> event_cb_t;
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struct event_pair {
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lifeline_t lifeline;
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event_cb_t callback;
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event_pair(lifeline_t _lifeline, event_cb_t _callback)
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{
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lifeline = _lifeline;
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callback = _callback;
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}
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bool operator==(const event_pair& rhs)
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{
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return (!lifeline.owner_before(rhs.lifeline) && !rhs.lifeline.owner_before(lifeline))
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&& (lifeline.lock() == rhs.lifeline.lock())
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&& (callback.target<D_EVENT_FUNC_T>() == rhs.callback.target<D_EVENT_FUNC_T>());
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}
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};
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typedef event_pair listener_t;
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class event {
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std::list<listener_t> _listeners;
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public:
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event();
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virtual ~event();
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size_t add(listener_t listener);
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inline event operator+=(listener_t listener)
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{
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add(listener);
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return *this;
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}
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size_t remove(listener_t listener);
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inline event operator-=(listener_t listener)
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{
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remove(listener);
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return *this;
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}
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size_t count();
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bool empty();
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inline operator bool()
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{
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return !this->empty();
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}
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void clear();
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size_t call(event_args_t& arguments);
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inline size_t operator()(event_args_t& arguments)
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{
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return call(arguments);
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}
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inline size_t call()
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{
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event_args_t args{};
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return call(args);
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}
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inline size_t operator()()
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{
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return call();
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}
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public:
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struct {
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std::shared_ptr<utility::event> add;
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std::shared_ptr<utility::event> remove;
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std::shared_ptr<utility::event> empty;
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} on;
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};
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} // namespace utility
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#endif OBS_STREAM_EFFECTS_UTILITY_EVENT_CPP
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