QT 状态机例子

#include <QApplication>
#include <QStateMachine>
#include <QPushButton>
#include <QSignalTransition>
#include <QPropertyAnimation>

int main(int argc,char **argv)
{
QApplication app(argc,argv);
QWidget *w=new QWidget;
w->resize(240,320);
QPushButton *button = new QPushButton("hicjiajia",w);
QStateMachine *machine = new QStateMachine; //新建状态机
QState *state1 = new QState(machine); //状态1
state1->assignProperty(button,"geometry",QRect(0,0,80,30)); //绑定button的geomertry属性
machine->setInitialState(state1); //state1设为初始化状态
QState *state2 = new QState(machine);
state2->assignProperty(button,"geometry",QRect(w->width()-30,w->height()-80,30,80));
QFont font = QFont("Airl", 12);
state2->assignProperty(button,"font",font); //状态2字体


QPropertyAnimation *ani=new QPropertyAnimation(button,"geometry");
ani->setDuration(2000);
ani->setEasingCurve(QEasingCurve::OutBounce); //动画效果—弹跳

QSignalTransition *transition1=state1->addTransition(button,SIGNAL(clicked()),state2); //动画触发信号
transition1->addAnimation(ani);
QSignalTransition *transition2=state2->addTransition(button,SIGNAL(clicked()),state1);
transition2->addAnimation(ani);
machine->start(); //开启状态机

w->show();
return app.exec();
}