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1 #pragma once
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2
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3 namespace system_time_periods {
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4 static constexpr t_filetimestamp second = filetimestamp_1second_increment;
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5 static constexpr t_filetimestamp minute = second * 60;
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6 static constexpr t_filetimestamp hour = minute * 60;
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7 static constexpr t_filetimestamp day = hour * 24;
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8 static constexpr t_filetimestamp week = day * 7;
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9 };
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10 class system_time_callback {
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11 public:
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12 virtual void on_time_changed(t_filetimestamp newVal) = 0;
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13 };
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14 //! \since 0.9.6
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15 class system_time_keeper : public service_base {
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16 public:
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17 //! The callback object receives an on_changed() call with the current time inside the register_callback() call.
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18 virtual void register_callback(system_time_callback * callback, t_filetimestamp resolution) = 0;
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19
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20 virtual void unregister_callback(system_time_callback * callback) = 0;
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21
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22 FB2K_MAKE_SERVICE_COREAPI(system_time_keeper)
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23 };
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24
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25 class system_time_callback_impl : public system_time_callback {
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26 public:
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27 system_time_callback_impl() {}
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28 ~system_time_callback_impl() {stop_timer();}
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29
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30 void stop_timer() {
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31 if (m_registered) {
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32 system_time_keeper::get()->unregister_callback(this);
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33 m_registered = false;
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34 }
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35 }
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36 //! You get a on_changed() call inside the initialize_timer() call.
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37 void initialize_timer(t_filetimestamp period) {
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38 stop_timer();
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39 system_time_keeper::get()->register_callback(this, period);
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40 m_registered = true;
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41 }
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42
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43 //! Override me
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44 void on_time_changed(t_filetimestamp) override {}
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45
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46 PFC_CLASS_NOT_COPYABLE_EX(system_time_callback_impl)
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47 private:
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48 bool m_registered = false;
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49 };
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50
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