How to modify a widget parent and after restore it? - c++

Question

I'm trying to animate a widget that is inside a grid and a container, whenever hovered it is animated being expanded horizontally.
As the widget is inside of a container it gets cut because it cant expand above the parent widget area.
What I thought: when the widget is hovered, the code changes her parent to the centralWidget then it can expand above other widgets, and when it's no longer hovered restore her 'original' parent.
An example:
As it could be seen in the gif below, before hovering:
The widget is 'attached' to the GridLayout and inside of the Widget container.
After the mouse leaves:
It's no longer attached to the GridLayout / Widget.
I tried to 'restore' the widget to her parent with:
this->setParent(widgetParent);
But it didn't work or I may be doing something wrong.
I could not think of another way of doing all this (expanding a widget inside of a container above her parent limits), any different suggestion is welcome.
class AnimatedButton : public QPushButton
{
Q_OBJECT
public:
QPropertyAnimation* anim;
struct WidgetPos { int x = 0; int y = 0; int w = 0; int h = 0; };
WidgetPos wp;
QWidget* widgetParent;
QWidget* centralwidget;
void CreateAnimation(QByteArray propertyName)
{
if (propertyName == "geometry")
{
anim = new QPropertyAnimation(this, propertyName);
this->anim->setDuration(100);
this->anim->setEasingCurve(QEasingCurve::Linear);
this->wp.x = this->x();
this->wp.y = this->y();
this->wp.w = this->width();
this->wp.h = this->height();
}
}
AnimatedButton(QWidget* parent = 0) : QPushButton(parent)
{
widgetParent = parent;
this->installEventFilter(this);
}
bool eventFilter(QObject* obj, QEvent* event)
{
if (event->type() == QEvent::Enter)
{
if (!this->wp.x)
this->CreateAnimation("geometry");
// setParent to the central widget so the widget can resize above her default parent area.
this->setParent(this->centralwidget);
this->show();
this->anim->stop();
this->anim->setStartValue(
QRect(this->x(), this->y(), this->width(), this->height()));
this->anim->setEndValue(
QRect(this->x(), this->y(), (this->wp.w + 200) - this->width(), this->height()));
this->anim->start();
}
else if (event->type() == QEvent::Leave)
{
this->anim->stop();
this->anim->setStartValue(
QRect(this->x(), this->y(), (this->wp.w + 200) - this->width(), this->height()));
this->anim->setEndValue(
QRect(this->wp.x, this->wp.y, this->wp.w, this->wp.h));
this->anim->start();
// Restore default parent (--------NOT WORKING---------)
this->setParent(widgetParent);
this->show();
}
return QWidget::eventFilter(obj, event);
}
};
QtWidgetsApplication::QtWidgetsApplication(QWidget *parent)
: QMainWindow(parent)
{
ui.setupUi(this);
// Pass the central widget to the AnimatedButton class.
ui.pushButton->centralwidget = ui.centralWidget;
return;
}