我正在开发一个Qt应用程序,想使用Qt State Framework制作一些动画。
第一:如何通过使用状态转换,将一个水平布局中包含的按钮组动画到另一个垂直布局中?
第二:如何在一种状态下显示窗口小部件?例如菜单:当用户单击菜单中的按钮时,窗口小部件(先前已使用widget->hide()隐藏)将会显示......??
以下是示例代码:
boxInsert = new BoxInsert(this);
boxInsert->hide ();
btn1 = new QPushButton("Introducir", this);
btn2 = new QPushButton("Informe", this);
btn3 = new QPushButton("Salir", this);
QStateMachine *machine = new QStateMachine(this);
QState *st1 = new QState(machine);
st1->setObjectName ("menuMode");
st1->assignProperty (btn1, "pos", QPointF(center - btn1->width () / 2, 20));
st1->assignProperty (btn2, "pos", QPointF(center - btn1->width () / 2, 40));
st1->assignProperty (btn3, "pos", QPointF(center - btn1->width () / 2, 60));
st1->assignProperty (boxInsert, "visible", QVariant(false));
QState *st2 = new QState(machine);
st2->setObjectName ("barMode");
st2->assignProperty (btn1, "pos", QPointF(40, 0));
st2->assignProperty (btn2, "pos", QPointF(40, 0));
st2->assignProperty (btn3, "pos", QPointF(40, 0));
st1->assignProperty (boxInsert, "visible", QVariant(true));
machine->setInitialState (st1);
QAbstractTransition *t1 = st1->addTransition (btn1, SIGNAL(clicked()), st2);
//QSequentialAnimationGroup *sq1 = new QSequentialAnimationGroup;
//sq1->addPause (250);
t1->addAnimation (new QPropertyAnimation(btn1, "pos"));
t1->addAnimation (new QPropertyAnimation(btn2, "pos"));
t1->addAnimation (new QPropertyAnimation(btn3, "pos"));
t1->addAnimation (new QPropertyAnimation(boxInsert, "visible"));
machine->start ();