基于Qt的软件框架设计--续

接上篇，我们的软件如何实现呢？

1、通信

通信口不局限于串口，如果有多种接口可以抽象。
以下为CPort头文件：

#ifndef CPORT_H#define CPORT_H#include <QObject>#include <QSerialPort>#include <QThread>#include <QTimer>class Message;//当然这个结构得自己定义并注册，这里使用了前置申明class CPort : public QObject{    Q_OBJECTpublic:    explicit CPort(QObject *parent = 0);    ~CPort();signals:    //向上层传送消息    void signalUpwardMsg(const Message&);private slots:    //上层传过来的消息发送到串口    void onDownwardMsg(const Message&);    //读串口数据    void onReadData();    //在这里定时的解析收到的数据    void onParse();private:    QSerialPort *port;    QThread worker;    QTimer *timer;    QByteArray  data;};#endif // CPORT_H

以下是CPort的源文件：

#include "CPort.h"#include "message.h"#include <QDebug>CPort::CPort(QObject *parent) : QObject(parent){    port = new QSerialPort(this); #ifdef __arm__    port->setPortName("/dev/ttymxc1"); #else    port->setPortName("COM2"); #endif    port->setBaudRate(QSerialPort::Baud115200);    port->setDataBits(QSerialPort::Data8);    port->setParity(QSerialPort::EvenParity);    port->setStopBits(QSerialPort::OneStop);    connect(port,SIGNAL(readyRead()),this,SLOT(onReadData()));    if(!port->open(QIODevice::ReadWrite))    {        qDebug()<<"Port Can't open";    }    timer = new QTimer(this);    timer->setInterval(10000);    connect(timer,SIGNAL(timeout()),SLOT(onParse()));    timer->start();    this->moveToThread(&worker);    worker.start(QThread::HighPriority);}CPort::~CPort(){}void CPort::onDownwardMsg(const Message & msg){    QByteArray array(msg.content);    port->write(array);}void CPort::onReadData(){    data.append(port->readAll());}void CPort::onParse(){    for(int i = 0 ; i < data.size();i++)    {        //协议解析后得到 message    }    Message msg;    signalUpwardMsg(msg);}

2、业务逻辑

业务逻辑就因项目而异了

#ifndef CMSGBUSINESS_H#define CMSGBUSINESS_H#include <QObject>class Message;class CMsgBusiness : public QObject{    Q_OBJECTpublic:    explicit CMsgBusiness(QObject *parent = 0);    ~CMsgBusiness();public:    //这里可以在UI里来直接调用    QString get()const;signals:    //处理完的Msg发到界面上去显示    void signalSomethingComing(QString);private slots:    //收到下层来的msg    void onCommingMsg(const Message&);};#endif // CMSGBUSINESS_H

#include "CMsgBusiness.h"CMsgBusiness::CMsgBusiness(QObject *parent) : QObject(parent){}CMsgBusiness::~CMsgBusiness(){}void CMsgBusiness::onCommingMsg(const Message &msg){    Q_UNUSED(msg)    //这里可以对收到的msg进行处理    signalSomethingComing(QString("sss"));}

3 bridge

这个类是一个承上启下的使用类

#ifndef CBRIDGE_H#define CBRIDGE_H#include <QObject>class CMsgBusiness;class CPort;class CBridge : public QObject{    Q_OBJECTpublic:    explicit CBridge(QObject *parent = 0);    ~CBridge();    //这里可以得到所有的实例    CMsgBusiness *business()const;    CPort *port()const;signals:    //这里可以转发信号public slots:private:    CMsgBusiness *pBusiness;    CPort *pPort;};#endif // CBRIDGE_H

#include "CBridge.h"#include "CPort.h"#include "CMsgBusiness.h"CBridge::CBridge(QObject *parent) : QObject(parent){    pBusiness  = new CMsgBusiness(this);    pPort = new CPort();//这里的实例化得注意了   //通信层与业务层的通信    connect(pPort,SIGNAL(signalUpwardMsg(Message))    ,pBusiness,SLOT(onCommingMsg(Message)));}CBridge::~CBridge(){}CMsgBusiness *CBridge::business() const{    return pBusiness;}CPort *CBridge::port() const{    return pPort;}

主界面

#include "mainwindow.h"#include "CBridge.h"#include "CMsgBusiness.h"MainWindow::MainWindow(QWidget *parent,CBridge* bridge)    : QMainWindow(parent)    ,pb(bridge){     //这里完成业务层与UI层的通信    connect(pb->business(),SIGNAL(signalSomethingComing(QString))    ,SLOT(onComing(QString)));}MainWindow::~MainWindow(){}void MainWindow::onComing(QString content){    Q_UNUSED(content)    //SHOW ON UI}

客户端

#include "mainwindow.h"#include <QApplication>#include "CBridge.h"int main(int argc, char *argv[]){    QApplication a(argc, argv);    MainWindow w(0,new CBridge);    w.show();    return a.exec();}

以上是我在项目使用的架构，其实架构没有最好的，只有最合适的。