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OB-Xd/Modules/gin/utilities/coalescedtimer.h
2020-05-21 09:14:57 +02:00

89 lines
1.5 KiB
C++
Executable file

/*==============================================================================
Copyright 2020 by Roland Rabien
For more information visit www.rabiensoftware.com
==============================================================================*/
#pragma once
class CoalescedTimer
{
public:
CoalescedTimer () = default;
void startTimer (int ms)
{
stopTimer();
delay = ms;
sharedTimers->add (this);
}
void startTimerHz (int hz)
{
if (hz > 0)
startTimer (1000 / hz);
else
stopTimer();
}
void stopTimer()
{
sharedTimers->remove (this);
delay = 0;
}
std::function<void ()> onTimer;
private:
class SharedTimer : public Timer
{
public:
void timerCallback() override
{
for (auto t : timers)
if (t->onTimer)
t->onTimer ();
}
Array<CoalescedTimer*> timers;
};
class SharedTimers
{
public:
void add (CoalescedTimer* t)
{
auto itr = timers.find (t->delay);
if (itr == timers.end())
{
auto st = std::make_unique<SharedTimer>();
st->timers.add (t);
st->startTimer (t->delay);
timers[t->delay] = std::move (st);
}
else
{
itr->second->timers.add (t);
}
}
void remove (CoalescedTimer* t)
{
auto itr = timers.find (t->delay);
if (itr != timers.end())
{
itr->second->timers.removeFirstMatchingValue (t);
if (itr->second->timers.size() == 0)
timers.erase (t->delay);
}
}
std::map<int, std::unique_ptr<SharedTimer>> timers;
};
int delay = 0;
SharedResourcePointer<SharedTimers> sharedTimers;
};