source/eventdispatcher.cpp

   1 /* $Id$
   2
   3 This file is part of libmspio
   4 Copyright © 2007 Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7 #include <msp/time/units.h>
   8 #include "base.h"
   9 #include "eventdispatcher.h"
  10 #include "poll.h"
  11
  12 namespace Msp {
  13 namespace IO {
  14
  15 EventDispatcher::EventDispatcher()
  16 { }
  17
  18 void EventDispatcher::add(Base &obj)
  19 {
  20         SlotMap::iterator i=objects.find(&obj);
  21         if(i==objects.end())
  22         {
  23                 i=objects.insert(SlotMap::value_type(&obj, Slot(&obj))).first;
  24                 i->second.evch_conn=obj.signal_events_changed.connect(sigc::bind(sigc::mem_fun(this, &EventDispatcher::object_events_changed), &obj));
  25                 i->second.del_conn=obj.signal_deleted.connect(sigc::bind(sigc::mem_fun(this, &EventDispatcher::object_deleted), &obj));
  26
  27                 if(obj.get_events())
  28                         poller.set_object(obj, obj.get_events());
  29         }
  30 }
  31
  32 void EventDispatcher::remove(Base &obj)
  33 {
  34         SlotMap::iterator i=objects.find(&obj);
  35         if(i!=objects.end())
  36         {
  37                 i->second.evch_conn.disconnect();
  38                 i->second.del_conn.disconnect();
  39                 objects.erase(i);
  40
  41                 poller.set_object(obj, P_NONE);
  42         }
  43 }
  44
  45 void EventDispatcher::tick()
  46 {
  47         if(objects.empty())
  48                 return;
  49
  50         if(poller.poll()>0)
  51                 dispatch();
  52 }
  53
  54 void EventDispatcher::tick(const Time::TimeDelta &dt)
  55 {
  56         if(objects.empty())
  57                 return;
  58
  59         if(poller.poll(dt)>0)
  60                 dispatch();
  61 }
  62
  63 void EventDispatcher::object_events_changed(PollEvent ev, Base *obj)
  64 {
  65         poller.set_object(*obj, ev);
  66 }
  67
  68 void EventDispatcher::object_deleted(Base *obj)
  69 {
  70         remove(*obj);
  71 }
  72
  73 void EventDispatcher::dispatch()
  74 {
  75         const Poller::SlotSeq &result=poller.get_result();
  76         for(Poller::SlotSeq::const_iterator i=result.begin(); i!=result.end(); ++i)
  77                 i->object->event(i->events);
  78 }
  79
  80 } // namespace IO
  81 } // namespace Msp