pebble_event_services.hpp

#pragma once
 
namespace Pebble {
 
 
class TickTimer
{
protected:
    virtual void OnTick(tm &tick_time, TimeUnits units_changed) = 0; 
 
    virtual ~TickTimer() { TickTimerEnd(); }
 
    inline void TickTimerStart(TimeUnits tick_units) { 
        active() = this;
        tick_timer_service_subscribe(tick_units, handler_tick);
    }    
 
    inline void TickTimerEnd() { if (active() == this) { tick_timer_service_unsubscribe(); active() = 0; } }
    
private:
    inline static TickTimer*& active() { static TickTimer* active = 0; return active; }
    
    static void handler_tick(tm *tick_time, TimeUnits units_changed) { active()->OnTick(*tick_time, units_changed); }
};
 
 
}