QT中状态机框架测试

QT中状态机框架测试

本文博客链接:http://blog.csdn.net/jdh99,作者:jdh,转载请注明.

环境：

主机:Fedora12

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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "QThread" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include 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
widget.c:

#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; }
说明：

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.