@Lucan1d
you made me curious, and so i played around a bit.
This example renders the widget and forwards mouse- and key-events to the widget (i used a QTextEdit in this case).
But it also points out the problems very well:
you can't use widgets with popup windows (e.g. combobox)
cursor blinking and text-selection isn't painted (may be fixed somehow - didn't investigate further)
correct focus handling might be pretty tricky to implement
correct state handling is essential for visual appearance
But i think it might be a good starting point. It still needs a lot of work to behave as someone would expect it to behave.
qmlRegisterType<MyQmlWidget>("com.test.qml", 1, 0, "MyQmlWidget");
QQuickView *qmlView = new QQuickView;
qmlView->setSource(QUrl::fromLocalFile("test.qml"));
qmlView->show();
test.qml
import QtQuick 2.0
import com.test.qml 1.0
MyQmlWidget {
focus: true
}
h
class MyQmlWidget : public QQuickPaintedItem
{
Q_OBJECT
public:
MyQmlWidget( QWidget* widget = new QTextEdit );
virtual bool eventFilter(QObject *, QEvent *);
virtual void paint(QPainter * painter);
virtual bool event(QEvent * e);
protected:
void setWidget( QWidget* widget );
QWidget* m_Widget;
};
cpp
MyQmlWidget::MyQmlWidget( QWidget* widget )
: QQuickPaintedItem()
{
this->setWidget( widget );
this->setAcceptedMouseButtons(Qt::AllButtons);
}
bool MyQmlWidget::eventFilter(QObject * watched, QEvent * event)
{
if( watched == m_Widget )
{
switch( event->type() )
{
case QEvent::Paint:
case QEvent::UpdateRequest:
this->update();
break;
}
}
return QQuickPaintedItem::eventFilter(watched, event);
}
void MyQmlWidget::paint(QPainter *painter)
{
if( !m_Widget )
return;
m_Widget->render( painter );
}
bool MyQmlWidget::event(QEvent *event)
{
switch( event->type() )
{
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
case QEvent::MouseButtonDblClick:
case QEvent::KeyPress:
case QEvent::KeyRelease:
{
qDebug() << "SEND EVENT:" << event;
QApplication::sendEvent( m_Widget, event );
return true;
}
break;
case QEvent::FocusIn:
this->forceActiveFocus();
break;
}
return QQuickPaintedItem::event(event);
}
void MyQmlWidget::setWidget(QWidget *widget)
{
m_Widget = widget;
m_Widget->installEventFilter( this );
const QSizeF sh = m_Widget->sizeHint();
this->setImplicitSize( sh.width(), sh.height() );
}
