//____________________________________________________________________
void SplitterProxy::setEnabled( bool value )
{
// make sure status has changed
if( _enabled != value )
{
_enabled = value;
if( _enabled ) clearSplitter();
}
}
//____________________________________________________________________
bool SplitterProxy::eventFilter( QObject* object, QEvent* event )
{
// do nothing if disabled
if( !_enabled ) return false;
// do nothing in case of mouse grab
if( mouseGrabber() ) return false;
switch( event->type() )
{
case QEvent::HoverEnter:
if( !isVisible() )
{
// cast to splitter handle
if( QSplitterHandle* handle = qobject_cast<QSplitterHandle*>( object ) )
{
setSplitter( handle );
}
}
return false;
case QEvent::HoverMove:
case QEvent::HoverLeave:
return isVisible() && object == _splitter.data();
case QEvent::MouseMove:
case QEvent::Timer:
case QEvent::Move:
return false;
case QEvent::CursorChange:
if( QWidget *window = qobject_cast<QMainWindow*>( object ) )
{
if( window->cursor().shape() == Qt::SplitHCursor || window->cursor().shape() == Qt::SplitVCursor )
{
setSplitter( window );
}
}
return false;
case QEvent::WindowDeactivate:
case QEvent::MouseButtonRelease:
clearSplitter();
return false;
default:
return false;
}
}
//____________________________________________________________________
bool SplitterProxy::event( QEvent *event )
{
switch( event->type() )
{
case QEvent::MouseMove:
case QEvent::MouseButtonPress:
case QEvent::MouseButtonRelease:
{
// check splitter
if( !_splitter ) return false;
event->accept();
// grab on mouse press
if( event->type() == QEvent::MouseButtonPress) grabMouse();
parentWidget()->setUpdatesEnabled(false);
resize(1,1);
parentWidget()->setUpdatesEnabled(true);
// cast to mouse event
QMouseEvent *mouseEvent( static_cast<QMouseEvent*>( event ) );
// get relevant position to post mouse drag event to application
if( event->type() == QEvent::MouseButtonPress )
{
// use hook, to make sure splitter is properly dragged
QMouseEvent mouseEvent2(
mouseEvent->type(),
_hook,
_splitter.data()->mapToGlobal(_hook),
mouseEvent->button(),
mouseEvent->buttons(), mouseEvent->modifiers());
QCoreApplication::sendEvent( _splitter.data(), &mouseEvent2 );
} else {
// map event position to current splitter and post.
QMouseEvent mouseEvent2(
mouseEvent->type(),
_splitter.data()->mapFromGlobal( mouseEvent->globalPos() ),
mouseEvent->globalPos(),
mouseEvent->button(),
mouseEvent->buttons(), mouseEvent->modifiers());
QCoreApplication::sendEvent( _splitter.data(), &mouseEvent2 );
}
// release grab on mouse-Release
if( event->type() == QEvent::MouseButtonRelease && mouseGrabber() == this )
{ releaseMouse(); }
return true;
}
case QEvent::Timer:
if( static_cast<QTimerEvent*>( event )->timerId() != _timerId )
{ return QWidget::event( event ); }
if( mouseGrabber() == this )
{ return true; }
/*
Fall through is intended.
We somehow lost a QEvent::Leave and gonna fix that from here
*/
case QEvent::HoverLeave:
case QEvent::Leave:
{
// reset splitter
if( isVisible() && !rect().contains( mapFromGlobal( QCursor::pos() ) ) )
{ clearSplitter(); }
return true;
}
default:
return QWidget::event( event );
}
}
