Qt中状态机框架测试
环境：
主机:Fedora 12
开发软件：QT
目标板：OK6410-A
实现功能:
两个按键KEY1,KEY2，产生状态迁移动作，3个状态:s1,s2,s3.其中s2又有2个子状态：s21,s22.
触发关系：
s1 - KEY1 -> s21 s21 - KEY2 -> s22 s22 - KEY1 -> s3 s3 - KEY2 -> s1 |
源代码：
widget.h:
- #ifndef WIDGET_H
- #define WIDGET_H
- #include <QWidget>
- #include <QStackedWidget>
- #include <QDebug>
- #include <QTimer>
- #include <unistd.h>
- #include <sys/types.h>
- #include <fcntl.h>
- #include <sys/stat.h>
- #include <stdio.h>
- #include <sys/param.h>
- #include <QVector>
- #include <QByteArray>
- #include <QQueue>
- #include <QSemaphore>
- #include <iostream>
- #include <QFile>
- #include "QThread"
- #include <QtGui>
- #include <QMutex>
- #include <QtNetwork>
- #include <QUdpSocket>
- #include <sys/ioctl.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <linux/soundcard.h>
- #include <alsa/asoundlib.h>
- #include <QtGui/QMainWindow>
- #include <QtGui/QDialog>
- #include <QtGui/QPushButton>
- #include <QtGui/QHBoxLayout>
- #include <QtGui/QVBoxLayout>
- #include <QtGui/QGridLayout>
- #include <QTextCodec>
- #include <QtGui/QToolButton>
- #include <qsocketnotifier.h>
- #include <QTimer>
- #include <QtNetwork/QUdpSocket>
- #include <iostream>
- #include <qmessagebox.h>
- #include <qstringlist.h>
- #include <QSound>
- #include <sys/socket.h>
- #include <arpa/inet.h>
- #include <QMap>
- #include <linux/soundcard.h>
- #include <netinet/in.h>
- #include <netinet/ip.h>
- #include <netinet/ip_icmp.h>
- #include <netdb.h>
- #include <QHostAddress>
- #include <QStateMachine>
- #include <QState>
- using namespace std;
- namespace Ui {
- class Widget;
- }
- class Widget : public QWidget
- {
- Q_OBJECT
- public:
- explicit Widget(QWidget *parent = 0);
- ~Widget();
- QStateMachine machine; //状态机
- QState *s1;
- QState *s2;
- QState *s21;
- QState *s22;
- QState *s3;
- private:
- Ui::Widget *ui;
- private slots:
- void slot_s1_in();
- void slot_s1_out();
- void slot_s21_in();
- void slot_s21_out();
- void slot_s22_in();
- void slot_s22_out();
- void slot_s3_in();
- void slot_s3_out();
- void slot_s2_in();
- void slot_s2_out();
- };
- #endif // WIDGET_H
- #include "widget.h"
- #include "ui_widget.h"
- //状态迁移
- /*
- s1 - KEY1 -> s21
- s21 - KEY2 -> s22
- s22 - KEY1 -> s3
- s3 - KEY2 -> s1
- */
- Widget::Widget(QWidget *parent) :
- QWidget(parent),
- ui(new Ui::Widget)
- {
- ui->setupUi(this);
- //状态初始化
- s1 = new QState();
- s2 = new QState();
- s21 = new QState(s2);
- s22 = new QState(s2);
- s3 = new QState();
- //s21状态设置初始子状态
- s2->setInitialState(s21);
- //将状态添加到状态机
- machine.addState(s1);
- machine.addState(s2);
- machine.addState(s3);
- //设置初始状态
- machine.setInitialState(s1);
- //定义状态机迁移
- s1->addTransition(ui->KEY1,SIGNAL(clicked()),s21);
- s21->addTransition(ui->KEY2,SIGNAL(clicked()),s22);
- s22->addTransition(ui->KEY1,SIGNAL(clicked()),s3);
- s3->addTransition(ui->KEY2,SIGNAL(clicked()),s1);
- //连接状态机和处理函数
- connect(s1,SIGNAL(entered()),this,SLOT(slot_s1_in()));
- connect(s21,SIGNAL(entered()),this,SLOT(slot_s21_in()));
- connect(s22,SIGNAL(entered()),this,SLOT(slot_s22_in()));
- connect(s3,SIGNAL(entered()),this,SLOT(slot_s3_in()));
- connect(s1,SIGNAL(exited()),this,SLOT(slot_s1_out()));
- connect(s21,SIGNAL(exited()),this,SLOT(slot_s21_out()));
- connect(s22,SIGNAL(exited()),this,SLOT(slot_s22_out()));
- connect(s3,SIGNAL(exited()),this,SLOT(slot_s3_out()));
- connect(s2,SIGNAL(entered()),this,SLOT(slot_s2_in()));
- connect(s2,SIGNAL(exited()),this,SLOT(slot_s2_out()));
- //开启状态机
- machine.start();
- }
- void Widget::slot_s1_in()
- {
- qDebug() << "s1 in";
- }
- void Widget::slot_s1_out()
- {
- qDebug() << "s1 out";
- }
- void Widget::slot_s21_in()
- {
- qDebug() << "s21 in";
- }
- void Widget::slot_s21_out()
- {
- qDebug() << "s21 out";
- }
- void Widget::slot_s22_in()
- {
- qDebug() << "s22 in";
- }
- void Widget::slot_s22_out()
- {
- qDebug() << "s22 out";
- }
- void Widget::slot_s3_in()
- {
- qDebug() << "s3 in";
- }
- void Widget::slot_s3_out()
- {
- qDebug() << "s3 out";
- }
- void Widget::slot_s2_in()
- {
- qDebug() << "s2 in";
- }
- void Widget::slot_s2_out()
- {
- qDebug() << "s2 out";
- }
- Widget::~Widget()
- {
- delete ui;
- }
测试发现，进子状态，首先先进父状态,跳转到其他状态，则会先退出当前子状态，然后再退出父状态.
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