1 #include <iostream>
2 #include <vector>
3
4 using namespace std;
5
6 template <class TParam>
7 class SlotBase
8 {
9 public:
10 virtual void slotFunction(TParam param) = 0;
11 virtual ~SlotBase() = default;
12 };
13
14 template <class TRecver, class TParam>
15 class Slot : public SlotBase<TParam>
16 {
17 private:
18 TRecver* m_pRecver; // 接受者的指针
19 void (TRecver::*m_func)(TParam param); // 接收者类中的成员函数指针
20
21 public:
22 Slot(TRecver* pObj, void(TRecver::*func)(TParam))
23 {
24 this->m_pRecver = pObj;
25 this->m_func = func;
26 }
27 void slotFunction(TParam param) override
28 {
29 (m_pRecver->*m_func)(param);
30 }
31 };
32
33 template <class TParam>
34 class Signal
35 {
36 public:
37 vector<SlotBase<TParam>*> signal_vector;
38
39 public:
40 template<class TRecver>
41 void addSlot(TRecver* pObj, void (TRecver::*func)(TParam))
42 {
43 signal_vector.push_back(new Slot<TRecver,TParam>(pObj,func));
44 }
45
46 void operator() (TParam param)
47 {
48 for(SlotBase<TParam>* p : signal_vector)
49 {
50 p->slotFunction(param);
51 }
52 }
53 };
54
55 class Recver1
56 {
57 public:
58 void func1(int param) { cout << "Recver1 :" << param << endl; }
59 };
60
61 class Recver2
62 {
63 public:
64 void func2(int param) { cout << "Recver2 :" << param << endl; }
65 };
66
67 class SendObj
68 {
69 public:
70 Signal<int> valueChanged;
71 public:
72 void testSignal(int value) { valueChanged(value); }
73 };
74
75 #define connect(sender, signal, recver, method) (sender)->signal.addSlot(recver, method)
76
77 int main()
78 {
79 Recver1* r1 = new Recver1;
80 Recver2* r2 = new Recver2;
81
82 SendObj* sd = new SendObj;
83
84 connect(sd, valueChanged, r1, &Recver1::func1);
85 connect(sd, valueChanged, r2, &Recver2::func2);
86
87 sd->testSignal(1000);
88
89 cout << "Hello World!" << endl;
90 return 0;
91 }
