void Window::appear()
{
//模态化该窗口
//用户必须通过单击该按钮来关闭窗口，在关闭窗口之前，
//不能操作当前scene下的其他items
if (m_isModal) {
setFlags(flags() | ItemIsPanel);
QGraphicsScene *const currentScene = scene();
if (currentScene) {
if (!s_panelStack.empty()) {
QGraphicsItem* item = s_panelStack.top();
item->setPanelModality(NonModal);
}
setPanelModality(SceneModal);
s_panelStack.push(this);
currentScene->setActivePanel(this);
}
}
QPropertyAnimation *scale_x = new QPropertyAnimation(scaleTransform, "xScale", this);
QPropertyAnimation *scale_y = new QPropertyAnimation(scaleTransform, "yScale", this);
QPropertyAnimation *opacity = new QPropertyAnimation(this, "opacity", this);
QParallelAnimationGroup *group = new QParallelAnimationGroup(this);
scale_x->setEndValue(1);
scale_y->setEndValue(1);
opacity->setEndValue(1.0);
group->addAnimation(scale_x);
group->addAnimation(scale_y);
group->addAnimation(opacity);
group->start(QAbstractAnimation::DeleteWhenStopped);
}
void Window::disappear()
{
QPropertyAnimation *scale_x = new QPropertyAnimation(scaleTransform, "xScale", this);
QPropertyAnimation *scale_y = new QPropertyAnimation(scaleTransform, "yScale", this);
QPropertyAnimation *opacity = new QPropertyAnimation(this, "opacity", this);
QParallelAnimationGroup *group = new QParallelAnimationGroup(this);
scale_x->setEndValue(1.05);
scale_y->setEndValue(0.95);
opacity->setEndValue(0.0);
group->addAnimation(scale_x);
group->addAnimation(scale_y);
group->addAnimation(opacity);
if (!keep_when_disappear) {
connect(group, SIGNAL(finished()), this, SLOT(deleteLater()));
}
group->start(QAbstractAnimation::DeleteWhenStopped);
if (m_isModal) {
QGraphicsScene *const currentScene = scene();
if (currentScene) {
if (!s_panelStack.empty()) {
s_panelStack.pop();
if (!s_panelStack.empty()) {
QGraphicsItem* item = s_panelStack.top();
item->setPanelModality(SceneModal);
currentScene->setActivePanel(item);
}
}
}
}
}
