juce_Timer.h

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   The code included in this file is provided under the terms of the ISC license
   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
   To use, copy, modify, and/or distribute this software for any purpose with or
   without fee is hereby granted provided that the above copyright notice and
   this permission notice appear in all copies.
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
//==============================================================================
class JUCE_API  Timer
{
protected:
    //==============================================================================
    Timer() noexcept;
 
    Timer (const Timer&) noexcept;
 
public:
    //==============================================================================
    virtual ~Timer();
 
    //==============================================================================
    virtual void timerCallback() = 0;
 
    //==============================================================================
    void startTimer (int intervalInMilliseconds) noexcept;
 
    void startTimerHz (int timerFrequencyHz) noexcept;
 
    void stopTimer() noexcept;
 
    //==============================================================================
    bool isTimerRunning() const noexcept                    { return timerPeriodMs > 0; }
 
    int getTimerInterval() const noexcept                   { return timerPeriodMs; }
 
    //==============================================================================
    static void JUCE_CALLTYPE callAfterDelay (int milliseconds, std::function<void()> functionToCall);
 
    //==============================================================================
    static void JUCE_CALLTYPE callPendingTimersSynchronously();
 
private:
    class TimerThread;
    size_t positionInQueue = (size_t) -1;
    int timerPeriodMs = 0;
    SharedResourcePointer<TimerThread> timerThread;
 
    Timer& operator= (const Timer&) = delete;
};
 
} // namespace juce