Qt动画控制效果

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首先需要创建一个状态机对被控制对象的状态, 动画效果, 信号触发等进行统一管理.

    //创建状态机    QStateMachine *pStateMachine = new QStateMachine(this);

然后根据动画需求设置状态, 比如希望一个按钮从左边移动到右边, 并且移动过程中放大到2倍.

    //设置起始状态    QState *pStartState = new QState(pStateMachine);    //绑定属性    pStartState->assignProperty(pButton, "geometry",            QRect(10,(this->height()-pButton->height())/2,pButton->width(),pButton->height()));    //设置为起始状态    pStateMachine->setInitialState(pStartState);    //设置结束状态    QState *pEndState = new QState(pStateMachine);    //绑定属性    pEndState->assignProperty(pButton, "geometry",            QRect(this->width()-pButton->width()*2-10,            (this->height()-pButton->height()*2)/2,            pButton->width()*2,pButton->height()*2));

绑定状态属性的时候描述好属性内容, 比如坐标和宽高.

然后设置动画效果

    //设置动画效果    QPropertyAnimation *pPropertyAnimation = new QPropertyAnimation(pButton, "geometry");    pPropertyAnimation->setDuration(2000);    pPropertyAnimation->setEasingCurve(QEasingCurve::OutBounce);

接下来绑定动画信号槽

    //绑定动画信号槽    QSignalTransition *pTransitionStart2End = pStartState->addTransition(pButton, SIGNAL(clicked()), pEndState);    pTransitionStart2End->addAnimation(pPropertyAnimation);    QSignalTransition *pTransitionEnd2Start = pEndState->addTransition(pButton, SIGNAL(clicked()), pStartState);    pTransitionEnd2Start->addAnimation(pPropertyAnimation);

最后就可以启动状态机了

    //开启状态机    pStateMachine->start();

需要完整代码请访问 QtWidgetsExamples

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