| Geant4 Cross Reference |
1 // Copyright (C) 2010, Guy Barrand. All rights reserved.
2 // See the file tools.license for terms.
3
4 #ifndef tools_sg_event_dispatcher
5 #define tools_sg_event_dispatcher
6
7 // Node that holds "callbacks" that can be triggered when an event_action
8 // traversed it. A typical example is to handle a mouse resize of the viewer/window
9 // and response to it by changing some geomtry in the scene graphs (for example
10 // to arrange that a tools::sg::plots maps the full viewer/window area).
11
12 #include "node"
13 #include "cbks"
14 #include "event_action"
15 #include "ecbk"
16
17 namespace tools {
18 namespace sg {
19
20 class event_dispatcher : public node {
21 TOOLS_NODE(event_dispatcher,tools::sg::event_dispatcher,node)
22 public:
23 virtual void event(event_action& a_action) {
24 ecbk::exec_event_cbks(m_cbks.callbacks(),a_action.get_event(),&a_action,this);
25 }
26 public:
27 event_dispatcher():parent(),m_cbks(){}
28 virtual ~event_dispatcher(){}
29 public:
30 event_dispatcher(const event_dispatcher& a_from):parent(a_from),m_cbks(a_from.m_cbks){}
31 event_dispatcher& operator=(const event_dispatcher& a_from){
32 parent::operator=(a_from);
33 m_cbks = a_from.m_cbks;
34 return *this;
35 }
36 public:
37 const sg::cbks& cbks() const {return m_cbks;}
38 //sg::cbks& cbks() {return m_cbks;}
39 void add_callback(bcbk* a_cbk) {m_cbks.add(a_cbk);} //we take ownership of a_cbk
40 void copy_cbks(const sg::cbks& a_from,bool a_clear = true) {m_cbks.copy(a_from,a_clear);}
41 void clear_cbks(){m_cbks.clear();}
42 protected:
43 sg::cbks m_cbks;
44 };
45
46 }}
47
48 #endif