桥接模式

在提出桥梁模式的时候指出，桥梁模式的用意是"将抽象化(Abstraction)与实现化(Implementation)脱耦，使得二者可以独立地变化"。这句话有三个关键词，也就是抽象化、实现化和脱耦。

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抽象化

实现化

脱耦

在使用VIM 编写makefile时，有时TAP键会是八个空格，使用set list命令可以查看所有的TAB键是否正确。

makefile文件

aLL:Brige
CC = g++
INCLUDE = .
CFLAGS = -g -Wall
Brige:main.o CDrawLine.o CDrawSquare.o CSqureRefined.o CCircleRefined.o
        $(CC) -o Brige main.o CDrawLine.o CDrawSquare.o CSqureRefined.o CCircleRefined.o
CDrawSquare.o:CDrawSquare.cpp CDrawSquare.h  CImplement.cpp
        $(CC) -I$(INCLUDE) $(CFLAGS) -c CDrawSquare.cpp
CDrawLine.o:CDrawLine.cpp CDrawLine.h
        $(CC) -I$(INCLUDE) $(CFLAGS) -c CDrawLine.cpp
CSqureRefined.o:CSqureRefined.cpp CSqureRefined.h
        $(CC) -I$(INCLUDE) $(CFLAGS) -c CSqureRefined.cpp
CCircleRefined.o:CCircleRefined.cpp CCircleRefined.h
        $(CC) -I$(INCLUDE) $(CFLAGS) -c CCircleRefined.cpp
main.o:main.cpp
        $(CC) -I$(INCLUDE) $(CFLAGS) -c main.cpp
clean:
 rm *.o
        rm Brige

CAbstraction.h

#ifndef CAbstractiongH
#define CAbstractiongH
#include<iostream>
#include "CImplement.h"
using namespace std;
class CAbstractiong
{
public:
      virtual  ~CAbstractiong(){};
      virtual void Operation() = 0;
      void SetImplement(CImplement *tImplement){m_CImplement = tImplement;};
protected:
      CAbstractiong(){};
      CImplement *m_CImplement;
};
#endif

CCircleRefined

#ifndef CCircleRefinedH
#define CCircleRefinedH
#include "CAbstraction.h"
class CCircleRefined:public CAbstractiong
{
public:
       CCircleRefined(){};
      ~CCircleRefined(){};
       void  Operation();
                                      
};
#endif
#include "CCircleRefined.h"
void  CCircleRefined::Operation()
{
  cout<<"对圆形进行了"<<m_CImplement->Operation()<<endl;
}

CSqureRefined

#ifndef CSqureRefinedH
#define CSqureRefinedH
#include "CAbstraction.h"
class CSqureRefined:public CAbstractiong
{
public:
       CSqureRefined(){};
      ~CSqureRefined(){};
       void  Operation();
                               
};
#endif
#include "CSqureRefined.h"
void  CSqureRefined::Operation()
{
  cout<<"对正方形进行了"<<m_CImplement->Operation()<<endl;
}

CAbstractiong

#ifndef CAbstractiongH
#define CAbstractiongH
#include<iostream>
#include "CImplement.h"
using namespace std;
class CAbstractiong
{
public:
      virtual  ~CAbstractiong(){};
      virtual void Operation() = 0;
      void SetImplement(CImplement *tImplement){m_CImplement = tImplement;};
protected:
      CAbstractiong(){};
      CImplement *m_CImplement;
};
#endif

CDrawSquare

#ifndef CDrawSquareH
#define CDrawSquareH
#include<iostream>
#include "CImplement.h"
class CDrawSquare:public CImplement
{
public:
       CDrawSquare(){};
       ~CDrawSquare(){};
      string Operation();
                
};
#endif
#include "CDrawSquare.h"
#include <iostream>
using namespace std;
string CDrawSquare::Operation()
{
   string sTemp ="进行了画方格操作";
   return sTemp;
}

CDrawLine

#ifndef CDrawLineH
#define CDrawLineH
#include<iostream>
#include <string>
#include "CImplement.h"
class CDrawLine:public CImplement
{
public:
       CDrawLine(){};
       ~CDrawLine(){};
      string Operation();
         
};
#endif
#include "CDrawLine.h"
#include <iostream>
using namespace std;
string CDrawLine::Operation()
{
   string sTemp = "进行了画线操作";
   return sTemp;
}

main.cpp

#include "CDrawLine.h"
#include "CDrawSquare.h"
#include "CSqureRefined.h"
#include "CCircleRefined.h"
int main()
{
  CDrawLine *pCDrawLine = new CDrawLine();
  CCircleRefined *pCCircleRefined = new CCircleRefined();
  pCCircleRefined->SetImplement(pCDrawLine);
  pCCircleRefined->Operation();
      
  CDrawSquare *pCDrawSquare = new CDrawSquare();
   pCCircleRefined->SetImplement(pCDrawSquare);
  pCCircleRefined->Operation();
  return 0;
}

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